Camshaft position sensor, also known as the cylinder identification sensor, camshaft position sensors are generally expressed by CIS. Camshaft position sensor function is to collect the valve camshaft position signal, and input ECU, in order to identify the ECU compression TDC cylinder 1, thereby performing sequential fuel injection control, ignition timing control and knock control.
Cooling Temperature Sensor

Cooling Temperature Sensor
2014年2月23日星期日
YLE Automotive Temperature Sensors Thermistor temperature sensor ferrite
Ferredoxin-type thermistor temperature sensor used to control the radiator cooling fan mounted on the radiator coolant circulation passage. Maintenance Method Thermal ferrite temperature sensor as follows: When the engine coolant temperature is higher than the predetermined value, if the radiator cooling fan is not running, you should check the radiator cooling fan circuit. First check the wiring connections, check for YLE Automotive Temperature Sensors open circuit, short circuit, and the work of the Working fan relay and thermal ferrite temperature sensor. Check the temperature sensor thermal ferrite. The thermal ferrite temperature sensor placed in the container, connect the multimeter, while heating at work to check the sensor. Under normal conditions, when the coolant temperature is the predetermined temperature, the sensor is in a conducting state, the meter indicates 0 Ω. YLE Shaft Position SensorCoolant temperature is higher than the predetermined temperature, the sensor should be turned off (non-conducting sensor), the meter indicates the resistance ∞, if the number of the ferrite temperature thermal sensor is damaged and should be replaced.
2014年1月12日星期日
Low will affect the long-term high-grade automotive oxygen sensor sensitivity
Sensor There are many types of internal use , wherein the oxygen sensor in the engine that is essential. Recently, some users say the car will affect the long-term high-grade low- oxygen sensor sensitivity , that really so? Xiaobian to tell you the answer .The formation of coke and coke formation on the general impact of the engine for three reasons : First, the use of " low- grade " bad driving habits. There prolonged idling and low-speed driving. On the other hand is mainly the use of the purity and quality of gasoline . Carbon impact is mainly reflected in the engine cold start problems , less than the required cold idle speed, idle severe cold will turn off after the hot car idling low . Also lead to decreased engine power , poor acceleration , fuel consumption increases ; engine exhaust emission deterioration , it also shortens the spark plugs, oxygen YLE Engine Position Sensor, catalytic ternary is life. The most important is the carbon of the engine will cause jamming of the piston ring , piston ring sealing performance , resulting in increased oil consumption , resulting in engine burning oil , shortening the life of the engine . Remove carbon deposits and effects of regular cleaning methods are generally divided into three steps , fuel injectors and intake cleaning can remove part of the coke, and be able to soften deep coke, oil tank can add agent to sustained cleaning carbon recovery nozzle atomization , keeping the oil flow, restore the power of the engine, eliminating the engine cold start problems , unstable idle , such as failure to improve fuel economy and extend spark plugs, oxygen YLE Crankshaft Position Sensor Replacement, catalytic converters , engine life. When Wei -off power enhancer plus 5% of the amount of oil available in the market mix , polymer nanospheres hundreds of millions in the role of " Brownian motion " , the heat will be more than ten meters per second velocity, so that it can be in the lubricant evenly, stable distributions. Meanwhile , using the kinetic energy given to the thermal motion of the continuous passage of oil and mechanical impact surface of the deposited abrasive, carbon and grease produced potent " physical washing " effect, restored or ensure clean working environment of the engine , eliminating the impurities possibility of causing engine failure. Since a huge amount of polymer nanoparticles uniformly distributed in the lubricant to add gravel becoming similar to cement concrete strength enhancement principle , making significantly improve the strength of the oil film , oil seal , seismic performance greatly enhanced. Because of poor air tightness engine , the larger the gap caused by channeling oil under channeling combustion residue , corrosion , oil aging failures can quickly eliminate or alleviate . In addition, due to increased cylinder pressure , exhaust valve scavenging momentum greatly improved , making the exhaust pipe carbon is strongly purge , exhaust pipes become very clean. Measures to prevent carbon generated models to choose the grade of gasoline according to the manufacturer 's instruction manual , but it should be noted that the label represents gasoline octane gasoline , reflecting the gasoline antiknock quality of gasoline and gasoline can not label On the phase problem and recommended to the regular reputable gas station , due to crude oil and refinery process , coupled with the sale of commercial gasoline market is not a high -quality gasoline, gasoline components containing sulfur , phosphorus, especially in the higher olefin content and oxidation stability is poor, olefin oxidation condensation will form a gelatinous when the engine of internal combustion work, and the engine crankcase exhaust and intake of dust particles in the collection , the throttle body , intake manifold , etc. to form coke. Also driving habits and conditions of use is also very important , bad driving habits " low grade " driving causing incomplete combustion gas mixture easily generated carbon ; avoid prolonged engine idling , the vehicle for a long time at low speeds , should always run a run high-speed , high-speed driving can make mixed combustion , improved fuel economy and can reduce coke formation, to restore the sensitivity of the oxygen sensor , clean the spark plug electrodes between carbon and catalytic converters surface.
2013年12月29日星期日
Bio- class sensor uses and effects in the food industry
The biosensor is a very special detection sensors , mainly for monitoring of vital objects and chemicals . In many areas of biosensors sideways must have the use of Cooling Temperature Sensor in which the food industry is also bound to use the . So biosensor uses its effect in the food industry , what does ? Following small to explain in detail . Biosensor analysis of the use of food containing food ingredients, food additives determination , harmful toxins and other fresh food analysis . A food ingredient analysisIn the food industry , the content of glucose is an important objective measure of the degree of sophistication and storing fruit of life expectancy . The enzyme electrode Crankshaft Position Sensor developed can be used to analyze wine, apple juice , jam and honey glucose . Other sugars, such as fructose , beer, malt wort , have sophisticated measuring sensor .Niculescu , who developed a biosensor called amps can be used to detect alcohol content drink guessed . Such a biosensor is buried in the alcohol dehydrogenase protein with polyethylene , and the share of the polymer is not the same enzyme can affect function of Crank Shaft Position Sensor . In the current experiments , the biosensor to measure alcohol limit for lnM.Analysis of two food additivesGenerally used in the food industry sulfite bleaching agents and preservatives , the enzyme electrode current- dioxide sulfite oxidase is selected item made ??active for the determination of the content of sulfite in foods , the linear measurement scale is 0 - quartic 6 mol / L. Again drinks , puddings , and other foods in the past sweeteners , Guibault other selected enzymes aspartate ammonia electrode contact measurement , the linear scale of minus five square -1xlO 2x10 negative cubic mol / L. Furthermore, the biosensor is also useful for measuring colors, and emulsifiers reported.3 pesticide residue analysisOver the years , everyone on pesticide residues in food increasingly focused questions , governments are also stepping on pesticide residues in food testing operations .Yamazaki , who sent a clear determination of the use of artificial enzyme organophosphorus insecticides amperometric biosensors , the use of organophosphorus pesticides hydrolase, nitro phenol and phenol detection limit diethyl seven negative side 10 mol, measured at 40 ℃ only 4min. Albareda such as glutaraldehyde cross-linking method using acetylcholine esterase fixed carbon paste electrode wire appearance, made ??a detectable concentration of negative 10 power of 10 negative paraoxon and 10 mol / L of 11 th mol / L of carbofuran biosensors can be used for the direct detection of residual water and juice samples of two pesticides.4 identification of microorganisms and toxinsThe presence of pathogenic microorganisms in food well-being of consumers will bring great harm , not only vegetarian food poisoning and toxicity of many varieties , most of them have carcinogenic , teratogenic, sudden changes in effect, therefore , strengthen the food pathogen microorganisms and toxins detection is crucial .Eating beef is very simple coli 0157.H7. Infection, and therefore , the demand for rapid detection and protection active approach to a class of E. coli bacteria 0157.H7 . Kramerr et al discuss fiber optic biosensor can detect within a few min food pathogens ( such as E. coli 0157.H7.), While the traditional approach needs a few d. This biosensor detection of pathogens from the pathogen from the sample obtained from scratch and make it independent of the growth in the medium altogether just 1d moment , while the traditional approach needs 4d.There is also a fast -active immune biosensor can be used to measure the milk residues of ivermectin , which is the reaction cytoplasmic genome, signal transmission through the optical system . The detection limit has been reached for 16.2ng/ml. One day be able to detect 20 milk samples .Detection five food freshnessFood industry, especially the freshness of food fish , fresh meat detect a primary objective is to assess the quality of the food . Volpe et al Yin oxidase yellow winded biological active materials, hydrogen peroxide electrode contact , through the determination of a past occurrence of fish muscle phosphate degradation process (IMP) muscle celecoxib (IIXR) and sub- yellow throat Yin (HX) concentration and then evaluate the freshness of the fish , the linear size of 5x10 -2x10 power of minus 10 th power minus 4 mol / L
2013年12月22日星期日
As the car is inseparable from the sensor fish without water
As the car is inseparable from the sensor fish without water , some users may be asked to sensors in the car really so important? Today who say that we should first role in the automotive air flow Crankshaft Sensor Replacement .We know that the fuel injection of correct starter air - fuel ratio to ensure complete combustion of the fuel or the fuel consumption , it is necessary to monitor the air flow sensor . Air flow sensor has become one of the most important automotive sensors, it determines vehicle fuel mileage and exhaust emissions fuss important role , which monitors the amount of air entering through the inlet inside the boot , and convert it into voltage signal is then transmitted to the starter control module. Starter control module based on a signal transmitted in the past to determine how much fuel and air mixture required and the fueling system to inform automotive spark plug when the ignition for each cylinder .When the car accelerates air flow Engine Water Temperature Sensor response is a sign of stupidity wear or failure , but also that the starter does not inject fuel moderate , not too little is too much.By immediate fuel price, a functioning air flow sensor may reduce the frequency of operation of the pump with the frugal fuel quantity is worth the price of the sensor. Therefore, if the air flow sensor failure on the car is worth the change .
2013年12月8日星期日
Soil temperature and humidity sensors for agricultural production
I do not know there is no species around greenhouses , greenhouses which are wall-mounted temperature sensor , use it to protect the greenhouses to maintain the temperature and humidity , is to allow the plants to grow better , but the temperature is not enough light use she also need suitable soil temperature and humidity , how to make sure the soil temperature and humidity it, look below . To measure soil temperature and humidity are generally using a plug-in temperature and humidity Engine Water Temperature Sensor , of course, this plug-in temperature and humidity sensors plug-in temperature and humidity sensors and we usually call on the industry is different . General soil temperature and humidity sensor is inserted relatively small, and temperature and humidity sensors used on different industries , general soil temperature and humidity sensors have several probes and probe length is not the same , so in order to better measure the different soil depths temperature and humidity . Soil temperature and humidity sensors are generally good corrosion resistance, often because of the need to insert into the soil , so the soil temperature and humidity Car Temperature Sensor probes generally use 316 L Specialty Steel . With the country now have the attention of agriculture , soil temperature and humidity will further be adopted to serve agriculture , of course, now the soil temperature and humidity sensor price is very expensive , generally require thousands or even tens of thousands of prices, so that only relatively large farms will be used , with the further development of sensor technology has been sent , soil temperature and humidity sensors new materials prices fell just around the corner , it is also bound to procure temperature and humidity sensors to small self-employed . Soil temperature and humidity will use its excellent performance to serve agricultural production .
Piezoelectric charge output accelerometer case
Piezoelectric accelerometer case charge output, can be used with any kind of a charge amplifier or a high-impedance input capture function has to match the pre-charge, charge amplifier type more, there is a single, multi-channel, integral, quasi-static, which should be selected according to the measurement requirements.There are exceptions, such as direct access to the output signal of the piezoelectric Engine Water Temperature Sensor has a high resistance properties of the three instruments (such as oscilloscopes), the same signal can be measured, but the impedance matching is not enough, only a qualitative understanding of the dynamic situation.ICP-type accelerometer built-in constant current adapter specifically, a single instrument available for constant current power supply and signal output more than just an acceleration car sensor. Part of the data collection instrument also comes with constant function directly with ICP sensor is equipped with.Common charge output sensors such as having a constant current output of data collection facilities, can be JM3861 constant fitness conditioner.Dual power acceleration sensor can provide dual power supply or acquisition with dual DC power supply.
2013年10月20日星期日
A temperature sensor for detecting the temperature
Temperature sensors of various physical properties of the use of material with the temperature variation of the temperature sensor is converted to electricity . Temperature sensor is a core part of the temperature measuring instruments , a wide variety . Press the measurement can be divided into contact and non -contact two categories, in accordance with the characteristics of Cooling Temperature Sensor materials and electronic components are divided into two types of RTD and thermocouple . Temperature sensor is used to monitor the main machine which compensates for temperature or the temperature overheating protection, which in the working machine as the motor rotation and the movement of moving parts , the cutting generates heat , but the temperature distribution is uneven, will cause certain temperature , the thermal deformation of CNC machine tools , precision machined parts affected . To avoid these effects, Crankshaft Positioning Sensor will be installed on the machine , it can be detected that the real temperature value transmitted to the control system , the set point can be reached at the time to the control system of the machine temperature can be monitored and control .
2013年10月17日星期四
Affect the development of the four load cell competition in the industry
Weighing sensors with other sensors industries there is a fierce competition that has the image of brands, services and other civilized gentleman of the dispute , but also change the material for components, spell cost , disposable quality unscrupulous unfair price competition. The competition is mainly the following four points : 1, the price of some electronic weighing products is extremely low , some only one-tenth of the international market price , this factor determines the load cell is no room for maneuver on pricing , forcing production enterprises reducing their quotations and offers many free services , or forcing producers to maintain inventory levels , bear the risk and cost of inventories , the production company profits is therefore reduced ; 2 , misleading consumers, so many users have misunderstood the load cell stability and reliability targets. Some companies are semi-permanent part of the product , are IP67, IP68 sealing level of product protection can be stabilized for ten years at least mention , but will say that this was the vulnerability of the device under load frequently , allowing the user to accept this Shaft Position Sensor prices also accept quality of this product ; 3 , at the expense of product quality for the price , crazy reduce costs, using a variety of means to seize the market , for example, $ 3,000 per tonne instead of one million yuan 40Cr steel the 40CrNiMoA alloy steel load cell elastomer to do with about $ 5 instead of an ordinary strain gauge precision strain Crankshaft Position Sensor to do , without the formation of low-quality low-cost, make a profit ; 4 , lax management and supervision of legal metrology so that some of the production equipment is poor or lacking in personal and corporate load cell is relatively easy to enter the industry , leading to increase productivity and drive down prices, making formal corporate profits dropped significantly , and even non-profit discontinued , difficult. These victims are often Crankcase Position Sensor level of technology , process equipment is good, strict quality control , good after-sales service load cell business, the ultimate victims are the majority of users . On the surface, the price war in recent years is the direct cause of the load cell market crowded, some people and companies in order to profit , survival waged a last resort , and its essence is about leadership and management oversight authority , leadership and management control, supervision and inspection caused by lax .
Principle and Application of Gas Sensors
The so-called gas sensor is used to detect whether a certain area in the presence of a specific gas and / or capable of continuous measurement of gas component concentration of the instrument. In the coal mine , petroleum, chemical , municipal , medical , transportation , family and other security aspects , commonly used in the detection of combustible gas sensor , combustible , toxic gases or existence , or oxygen consumption and so on. In the electric power industry and other manufacturing fields, but also quantitative measurement of flue gas sensor used in the concentration of each component to determine the combustion of harmful gas emissions and the like. Field of environmental monitoring in the atmosphere , the use ofCrankshaft Position Sensor determine environmental pollution situation , it is very common. Classification of gas sensors from detecting the type of gas , the often divided into combustible gas sensor ( often using catalytic combustion , infrared, thermal conductivity , semiconductor type ) , toxic gas sensors ( generally using electrochemical , metal-semiconductor , photoionization , flame ionization type ), hazardous gas sensor ( often with infrared , ultraviolet , etc. ) , oxygen ( often using paramagnetic , zirconia ) and other Engine Coolant Temperature Sensor ; from the use of the instrument , into the portable and stationary ; obtained from the gas the way the sample is divided into diffuse ( i.e. sensor mounted directly on the object to be measured environment , the measured gas through natural diffusion in direct contact with Car Temperature Sensor element ) , suction ( suction pump is through the use of other means , to be tested gas is introduced into the sensor sensing element detection. based on the measured gas is diluted , can be subdivided into full suction and dilution type, etc. ) ; from the analysis of gaseous components , and is divided into a single formula ( only for specific gas detection ) and compound of formula ( composition for simultaneous detection of multiple gases ) ; press Sensor detection principle , be divided into thermal , electrochemical , magnetic , optical , semiconductor type , such as gas chromatography type .
Regardless of the vibration sensor is in the application of the test or have a key role
Regardless of the vibration sensor is in the application of the test or have a key role is an electromechanical conversion unit , we sometimes also called the vibration sensor transducer, the vibration pickup . The vibration sensor is not directly the original volume to be measured into a mechanical energy , but the original mechanical quantity to be measured as a vibration Automobile Temperature Sensor input, and receiving section to be received by the machine , form another for converting a mechanical quantity , and then finally by the electromechanical conversion section converts electricity . Therefore, performance of a sensor receiving portion by the mechanical and electrical converting portion determined performance . 1 , the relative mechanical principle due to mechanical movement is receiving physical movement simplest form , so people first thought is to use mechanical methods to measure vibration, thereby creating a mechanical vibrometer . The mechanical Motor Sensors receiver is built on the basis of this principle on . Relative type vibrometer working principle is the measurement receiver , the instrument does not move in a fixed bracket, make contact with the measured object vibrating rod in the same direction , and by the elastic force of the spring in contact with the surface of the measured object , when the object vibrates, the antenna rod to follow it with the movement , and to promote the movement of the tape recording pen depicted on the vibration displacement of the object with time variation curve can be calculated according to the recording of the displacement curve of the size and frequency parameters . 2 , the principle of inertia mechanical inertia receiving mechanical vibration vibrometer when vibrometer is directly fixed to the measured vibration measuring point on the object , when the measured vibration Engine Water Temperature Sensor housing with the movement of objects , by the elastic support of inertia mass relative motion to the housing , is mounted on the block and to record the recording pen can be mass element and the shell relative vibration displacement amplitude , and the use of inertial mass and the housing relative to the vibration displacement relationship can calculated absolute vibration measured object displacement waveforms . 3, the vibration sensor is an electromechanical conversion general principle , the vibration sensor to receive the mechanical principle , only the relative type, inertia type two, but in the electromechanical conversion , due to the different nature of the transformation methods and its wide range of application is extremely extensive. In modern vibration measurement sensors used , is not the traditional concept of separate mechanical measuring device , it is only the entire measurement system in a part of , and with the subsequent electronics are closely related. Since Camshaft Position Sensor different internal electromechanical transformation principle , the output power is also different . Some of the changes in the amount converted into mechanical force , the charge changes , some changes in the mechanical vibration is converted into resistors, inductors and other electrical parameters changes. Generally , the charge and can not be directly subsequent display, recording , analysis instruments accepted . Therefore, electromechanical transformation principle for different sensors must be accompanied by specially equipped measuring circuit . Measuring circuit is the role of Auto Temperature Sensor output power becomes final follow-up show , analytical instruments generally acceptable voltage signal . Therefore, the vibration sensor according to their function may have the following classification : according to the principle of mechanical Receive : Relative type, inertial ; according to the principle of electromechanical conversion : electric , piezoelectric , eddy current , inductive , capacitive, resistive, photoelectric ; measured by the amount of machinery : displacement sensor, speed sensor
2013年10月13日星期日
Rocket technology sensor applications
Rocket launch is like a dragon is never caught not come, in fact, on the rocket in order to ensure safe flight of astronauts to provide accurate input data , the rocket on the various types of sensors , converters play an important role in sensor in the end what kind of role play it , and today China sensors trading network came to tell you about it. Various types of Camshaft Position Sensor on the rocket , mostly installed inside the key parts of the rocket , they perceived the arrow on the physical changes responsible for the physical quantity conversion converter to achieve the transmission signal supplied to the control system of the rocket and ground control center as a basis to judge , like a change in both eyes fixed targets for the command center to provide a basis to predict . Speaking of rockets internal sensor , manifold variety. Working principle of a capacitive , resistive , optical type , indicators measured pressure, displacement , strain, physical monitoring the acceleration , position, temperature , noise, vibration , etc. aspects. Wide range of sensors in the rocket world, there are several categories is particularly important, it is a direct monitoring data reflect the status of the rocket is safe . Acceleration sensor lifesaving escape criterion for the rocket escape system provides important parameters , when the rocket a serious failure , endangering the safety of astronauts , it will show the acceleration deviation from the design value , the sensor will sense this change the first time , and issued signal initiates escape procedures to help astronauts quickly out of the woods . Using the system with level Crankshaft Positioning Sensor for measuring the remaining amount of propellant level measurement , real time, continuously , accurately provide information on the remaining amount of liquid propellant , controls the engine adjusting valve or open or closed , monitoring the flow of propellant mixing ratio of the engine keep tank oxidant , the mass ratio of the combustion agent is within the optimal range . Vibration and noise is the rocket invisible killer , though does not seem to explode so violently cruel, but the astronauts of the body is also very large destructive . In order to ensure the rocket during flight vibration and noise generated by the human body can not exceed acceptable levels , improve ride comfort of astronauts , rockets also set up a special monitoring vibration and noise of Car Temperature Sensor. Rumbling avalanche of orange flame , daring and took away all eyes , a small Car Sensors on the huge rocket body seem insignificant , but they are protecting the safety of the astronauts unsung heroes in the thousands of degrees of broiled high stick to their posts , so vacated became an astronaut flying dragon tame car.
Piezoelectric ceramic ultrasonic sensor working principle and structural characteristics
Ultrasonic sensors are developed from the use of ultrasonic sensor characteristics , because of its reliable, easy to install, waterproof , launch angle is small, high sensitivity , are widely used in liquid level monitoring, robot collision avoidance , a variety of ultrasonic proximity switches, and burglar alarm and other related fields. As we all know , is the production of piezoelectric ceramic ultrasonic sensor probes commonly used materials . Here's a look at piezoelectric ceramic Automotive Temperature Sensors working principle and structural characteristics . When a voltage is applied to the piezoelectric ceramics , piezoelectric ceramics will change with voltage and frequency mechanical deformation . On the other hand , when the vibration of piezoelectric ceramics , an electrical charge is generated . Using this principle , when given by the two piezoelectric ceramic or a piezoelectric ceramic and a metal sheet having a vibrator, the bimorph element , applying an electrical signal , it will emit an ultrasonic vibration by bending . In contrast, when applied to the bimorph element ultrasonic vibration , it will generate an electrical signal. Because of these effects , it can be used as a piezoelectric ceramic ultrasonic sensor . The Car Temperature Sensor is a composite vibrator be flexibly fixed on the base . The compound of the resonator and the vibrator consists of a metal plate and a piezoelectric ceramic bimorph element consisting of a combination of the vibrator . Resonator flared aims to effectively radiate ultrasonic waves generated due to vibration , and the ultrasonic waves can be effectively central portion of the vibrator . Piezoelectric ceramic Cooling Temperature Sensor uses a point to note is that in the high- frequency probe , you must use the vertical thickness vibration mode piezoelectric ceramic . In this case , the acoustic impedance of piezoelectric ceramic matches with the air becomes very important . Because the acoustic impedance of the piezoelectric ceramic 105 acoustic impedance of air , which will cause the vibration of the piezoelectric ceramic significant loss of radiation on the surface , then you will need to adhere to a special material on the piezoelectric ceramic ultrasonic sensor , as acoustic matching layer , the air can be realized with acoustic impedance matched , so as to achieve the purpose of the measurement .
Capacitive Humidity Sensor
Capacitive humidity sensor directly sensing the relative humidity changes , the humidity changes into a change in capacitance , and then change in capacitance by the signal conditioning circuit is converted to a standard electrical signal supplied to the associated control or monitoring circuits. Capacitive humidity sensor features are: fast response, high linearity , low hysteresis and long-term stability and good , so applications are increasingly widespread . Capacitive relative humidity sensor usually consists of thermosetting polymers , three capacitor structure , platinum electrodes , as well as integrated signal conditioning circuit ( except for high-temperature applications ) and other components. As shown below, wherein the thermosetting polymer is the outermost layer of the sensor package is mainly for protection against dirt , dust, oil and other Mian override or enter into Camshaft Position Sensor , corrosion platinum electrode , affect the sensor response speed . The outer layer of the platinum electrode is filled with holes, make sure the air with water vapor quickly and smoothly into the internal sensor , speed sensor response speed and reduce the measured hysteresis. In practice , based on the affinity of vapor capacitive, resistive or conductive thin film as a humidity sensor is sensitive to humidity , but also on the temperature-sensitive , so in order to achieve accurate measurement , or wide temperature range , temperature compensation is not necessary small. To achieve temperature compensation, temperature measurements must be placed as close to the Shaft Position Sensor measurement environment, particularly humidity and temperature is calculated using the dew point , which is particularly important. Industrial humidity and dew point measuring apparatus is usually integrated in the sensor substrate opposite a 1000 ohm platinum RTD temperature sensor for temperature compensation. When the sensor sensing area surface temperature is below ambient dew point temperature , then the sensor sensing area surface condensation is easy , even if the surface temperature or sensor sensing area within the local temperature only briefly below ambient dew point temperature, the sensor has an internal or surface condensation may form , especially when the working environment humidity above 95 %, the temperature of the subtle fluctuations are likely to cause condensation . In order to avoid humidity and dew condensation on Crankshaft Positioning Sensor influence , there is usually some measures such as maintaining good air circulation to reduce temperature fluctuations ; add to the humidity sensor sintered stainless steel filter , a waterproof coating to further suppress the condensation of .
2013年10月11日星期五
Note that the actual operation point of the pressure sensor
Measured not only in the production of pressure sensors play an important role , also in real life pressure sensor applications are endless . Pressure sensors are widely automated measurement applications in the automotive market, the new changes almost every day , in fact, everywhere around us , on the road on a motorcycle has a pressure sensor shadow. In fact, the quality of the pressure sensor has been in production concern, in this regard only determines the production and testing department executive power, in fact, the real life of the sensor quality and the right to decide on the user's hand. Here it should be noted that the use of pressure Car Temperature Sensor to make a summary of some of the issues . Pressure sensors work environment is generally more complicated, first of all we should prevent the waste deposited in the conduit and sensors with corrosive or hot media contacts . Measuring gas pressure in the pressure sensor , the pressure port should be opened in the flow line to the top , and the sensor is installed in the flow line to be fixed to the upper part so as to accumulate liquid flow easily into the pipe. Pressure sensors measure the fluid pressure , the pressure port should be opened in the side of the pipeline process , in order to avoid deposition of slag accumulation , this is to prevent blockage causes pressure sensor measurement errors . Impulse control pressure sensor should be installed in temperature fluctuations small place , so as to make the sensor work more stable. Similarly in the measurement of fluid pressure sensor , the sensor should be installed to avoid the impact of the liquid in order to avoid overvoltage damage Cooling Temperature Sensor . Winter freezing occurs when the sensor is installed outdoors freezing measures must be taken to avoid the impulse in the mouth due to icing fluid volume expansion , resulting in loss of the sensor . Pressure sensor wiring , should the cable through the waterproof connector or entangling pipe and tighten the nut tight seal to prevent leakage of rainwater into the transmitter through the cable housing to avoid line fault. Pressure sensor in the measurement of steam or other high temperature medium , the need to take additional buffer tube condenser, the operating temperature of the sensor should not exceed the limit , etc. These problems are in practice the need for technical staff are to pay special attention .
Thin-film temperature sensor is a new type of temperature sensor
Film temperature sensor is a new type of temperature sensor , working principle and common thermal resistance, thermocouple the same , but it's hot junction thickness of only a few microns . Film temperature sensor because of its small , short response time , high sensitivity, ease of integration , etc., suitable for measuring rapid changes in body temperature over time . Film thermocouple principle was first used by the Germans during the First World War made P.Hackmann and developed a film thickness of only 2um thermocouple sensor for measuring bore bullet shot in the foot after a temperature change . Many scholars from around the world followed the film temperatureCamshaftPositioSensorstructure , method of preparation , performance and prospects a lot of research work , and has made encouraging progress in recent years, is widely used in internal combustion piston top surface of the combustion chamber wall and cutting tips and other transient temperature tests . Domestic Northwestern Polytechnical University, Li Fu-Guo Huang Lu , who developed a new right to film thermocouple temperature sensor for measuring the work surface and the internal die temperature transients ; Xi'an Highway University, developed a money orchids, wall heat transfer for internal combustion engines process analysis of the film Coolant Temperature Sensor; Dalian University of Technology precision & processing , Ministry of Education key Laboratory of Bao yuan et al study and produce for measuring cutting temperature NiCr / NiSi film thermocouples.Developed film temperature sensor is the key to solve the coating resistant , solid , impact and insulating layer between the issues and the difficulty of combining domestic and foreign scholars have done a lot of research on the coating process and produce the corresponding thin film sensors. So far, the researchers have developed a thin-film Engine Water Temperature Sensorcan be well applied in some situations , but its versatility deficiencies , and the cost is high ; simultaneously by technology and material constraints , sensor life are generally more shorter.
2013年10月7日星期一
Precautions for replacement load cell
When replacing the load cell is also requiring attention , correct replacement approach allows the sensor is more convenient to install , click Yes precautions. A weighing sensor increases as the rated load , the output of the micro- volts / division signals are reduced , rather than as the load increases, the output signal also increases . This point is often overlooked . So replacing the sensor should be used as much as possible like the original load sensors. To replace the load slightly larger , we should pay attention to electronic scales weighing indicator range is adjustable : If it is not adjustable old display instruments, because the load into a larger sensor, the output of the micro volts / division signal is smaller, not full-scale output, display , DIP adjust achieving its purpose and can not use ; if it is adjustable range weighing indicator ( such as Toledo 8140 series ) , and replaced with a larger Cooling Temperature Sensor payload after the by setting the range, according to the instructions debugging. Also note that , if the load sensor is too large , the output of the micro -volt / div signal is too small , easy to reduce the sensitivity of the scale . (2) For the second force transmission link ( ie, the first lever and the second force transmission power transmission link between the lever ) S-shaped Crankshaft Positioning Sensor installed in electromechanical integration scale , should pay attention to : Reinstall the sensor after linking rod length with the same length as the original link . On the other hand , is to ensure that the first level of leverage and power transmission link with the first force transmission lever vertical angle of 90 degrees . If there are deviations , the scale will directly affect the accuracy and sensitivity. Link length is too long , a " large scale " phenomenon ; too short , a " small scale " phenomenon . At this point should also note that the link must be in free suspension state , in conjunction with other objects of friction to avoid affecting the sensitivity of the scale . 3 electromechanical integration scale in replacement of Car Sensors debugging, debugging mechanical scales should be based on accurate weighing indicator according to instructions . 4 . Whether electronic or electromechanical integration scale scales , in replacement of the sensor , it must pass through the test before use.
Detecting a pressure sensor with a multimeter can only perform simple testing, test results are for reference
Detecting a pressure sensor with a multimeter can only perform simple testing, test results are for reference only. Can be roughly three tests , the detection bridge , the main circuit is correctly detecting sensor is generally full Wheatstone bridge circuit , using the multimeter ohm , the impedance between the input terminal and an output terminal of the impedance , these two impedances is the pressure sensor input and output impedance.If the impedance is infinite , the bridge is broken , indicating sensor is defective or does not determine the correct pin definitions . Zero detection, voltage profile with a multimeter , test without applying pressure conditions, Camshaft Position Sensor zero output .This output is generally mV voltage level , if you exceed the technical specifications of the sensor , it shows zero deviation of range sensor . Pressure testing, inspection alone is: To power the sensor , pressure sensor mouth blown guide holes , files with a multimeter voltage detection sensor output voltage change. If the relative sensitivity of Car Temperature Sensor is large, this change will be significantly . If you did not change , we need to exert pressure switch pressure source .By the above method, a pressure sensor which can detect the approximate position . If the need for accurate detection , it is necessary to use a standard pressure source , the pressure to Cooling Temperature Sensor , and in accordance with the magnitude of pressure variation of the output signal , to calibrate the sensor . And when conditions permit , the relevant parameters of temperature sensing. In short, the pressure detection sensor is a complex task for general detection of a multimeter , can be applied in many cases , but if the required pressure sensors have stringent conditions with the detection of the system .
2013年9月27日星期五
With the demand for consumer electronics, automotive electronics and the expansion of the sensor has also been rapid development
With the demand for consumer electronics, automotive electronics and the expansion of the sensor has also been rapid development. Now, we see a lot of electronic products are often integrated functions, which have a combined sensor inside the credit inside. Expected in the future, the combination of sensor applications will be greater development, sales will gradually soared. Combined sensor is to a variety of Cooling Temperature Sensor products packaged together, so that you can capture a variety of signals, which saves space, but also reduce costs. Now, this applies to Cooling Temperature Sensorand multi-circuit board space is limited or electronic products which, like mobile phones, tablets and so on. The future, six-axis amshaft Position Sensor measurement unit (IMU) will become a mainstream application, play a greater functionality.There is some are mandatory use of specific technology products among applications, the cost become the decisive factor, as the automobile industry, each year in great demand, and if the results too, give car manufacturers to bring great pressure, to save costs, the combination of Car Temperature Sensor is the best choice. Along with that, the development of the automotive industry, the combination of Automotive Temperature Sensors growth momentum will continue soaring addition, the application of the security industry combined sensor. Security industry is now second only to the automotive industry, becoming the second fastest growing areas of the sensor. It is precisely because these areas the expansion of product performance requirements, bringing combined sensor development. With the continuous expansion of the field of future applications, potential business opportunities will be inestimable. As of now, there are many vacancies in combination sensor market, which gives manufacturers also brought a lot of opportunities.
2013年9月26日星期四
Railway bridge machine on tilt sensor applications
Tilt sensor is used to specifically measure the tilt angle sensor is able to measure the tilt angle of the object and bridges, inclination Crankshaft Positioning Sensor can real-time monitoring erecting machine tilt angle, and monitor the data transmitted to the control room, monitoring personnel according to the actual situation adjustment of status, to achieve security monitoring. Railway bridge is a machine for railway bridge construction on the common construction machinery, railway bridge machine in the railway tracks on the road, will make the beams onto the bridge piers, and its main function is to beams filed after delivery to a fixed position down. Erecting machine work great mechanical strength, and every time you need to run a large number of objects and even large tonnage, Camshaft Position Sensor to be hanging beams through the bridge embankment on the bit, and take line high center of gravity and axle load, with the massive there may be roadbed and line quality is poor, such as the curved section outer rails high enough to cause the body tilt cause side friction is large, if the friction is more serious and may lead to unnoticed after overturning accident, the line will lead to uneven slope erecting machine slippery, making it appear forward phenomenon, coupled with factors such as human and prone to dangerous accidents to predict in advance, using the tilt sensor is a good solution.
The acceleration sensor technology used
AC response acceleration sensors most commonly used AC response acceleration sensor is the use of a piezoelectric element as its sensitive unit. When the acceleration input, the sensor of the sensing mass "move" of the piezoelectric element generates a charge proportional to the input acceleration signal. From the electrical angle of view, as an active piezoelectric element capacitor, its ohmic resistance level at 10x9. Determined by the resistance and capacitance RC time constant, which also determines the frequency of Crankshaft Positioning Sensor through the properties. For this reason, the piezoelectric accelerometer can be used to measure static event. The piezoelectric element may be derived from natural or synthetic. They have different signal conversion efficiency and linearity. There are two types on the market piezoelectric accelerometer - charge output, voltage output. Main charge output piezoelectric acceleration sensor acceleration sensor zirconate titanate ceramics, has a wide operating temperature range, wide dynamic range, wide frequency range (usable frequency> 10kHz). Charge output of the piezoelectric type Camshaft Position Sensor is encapsulated in an airtight ceramic metal housing. Due to the ability to resist harsh environments, which has a very good durability. Because of its high impedance, this sensor requires a charge amplifier and low noise with shielded cable is used, preferably a coaxial cable. Low noise cable is a finger which has a low friction electrical noise, which is generated by the movement of the noise from the cable itself. Many sensor manufacturers also offer this low-noise cable. Charge amplifier and charge output type acceleration Automotive Temperature Sensors connection, which can eliminate the cable capacitance and the impact of the sensor capacitor in parallel. With advanced charge amplifier, charge output type acceleration sensor is easy to achieve wide dynamic response (> 120dB). Since the piezoelectric ceramic is very wide temperature range, some sensors may be used to -200 ° C to +400 ° C, or even wider temperature environment. They are particularly suitable for vibration testing under extreme temperatures, such as turbine engine monitoring.
订阅:
博文 (Atom)