2013年11月24日星期日

Position sensor is composed of three parts of a brushless DC motor system of

Position sensor is composed of three parts of a brushless DC motor system, but also a symbol from the brush DC motor. Its role is to position in the movement detection in the process of the main Car Temperature Sensorrotor, rotor magnet pole position signal into electrical signal, provide the information for the correct logic switching circuit, the turn-on and cut-off control them, which cause the current to the armature winding of the motor changes with the rotor position in order of commutation, car sensorform a rotating magnetic field the air gap step type, drive permanent magnet rotor rotating continuously. Application of position sensor, reduce noise, improve the service life of motor operation and performance of the motor, at the same time to reduce the energy dissipation effect.

Photoelectric type crankshaft position sensor is installed in the distributor

Photoelectric type crankshaft position sensor is installed on the distributor, which is composed of signal generator and signal light hole plate. The signal panel and electrical axis
To rotate together, there are 360Camshaft Position Sensor lithographic gap signal disc outer ring, signal generating crank angle 1 °; a 6 light holes spaced 60 DEG are uniformly distributed within the signal generated by, crank angle 120 °, 1 of which aperture is wide, to produce a signal relative to the TDC of cylinder 1. Signal generator is arranged on the shell of distributor, is composed of two light emitting diodes, two photosensitive diode and circuit. The light emitting diode is opposite to the photosensitive Crankshaft Positioning Sensordiode. Between the signal disc is positioned on the light emitting diode and photodiode, because the light hole signal disc, the light and shade alternating phenomenon. When the beam of light emitting diode according to the photodiode, photosensitive diode voltage; when the light emitting diode beam is blocking, photosensitive diode voltage of 0. The voltage signal shaping amplification circuit part, namely to electronic control unit for conveying the crank angle is 1 ° and 120 ° signal, the electronic control unit calculates the engine speed and crankshaft position according to the signal

2013年11月21日星期四

How tension sensor wiring

How tension sensor wiring ?First determine the monitor 's power Engine Water Temperature Sensor interface positive power of negative , positive feedback , negative feedback , positive signal, negative , if it is 6-wire transmission control , measure Car Temperature Sensorresistance smallest two lines are the power positive feedback positive ; the power of negative , negative feedback , after receiving the sensor load monitor , measure another two line voltage ( mV ) signal is connected to monitor the positive and negative connection monitor signal negative ; if the value is four lines , you need to monitor power is and feedback is shorted , the power losses and negative feedback shorted with a multimeter measuring Shaft Position Sensor four lines, of which the largest two resistor values ​​is the power , the other two is the signal . Depending on the sensor origin, can lead color judgment, within the country manufacturers usually red for the power supply positive , black is negative power supply , green for the signal is positive, white is the signal negative ; Europe produces sensors generally green as the power supply positive , black for the power negative , white for the signal is positive, red is the signal negative .

Tension sensor performance indicators which

Tension sensor performance indicators which ?Mainly include linearity error , hysteresis error , repeatability error , creep , zero temperature characteristics and sensitivity temperature characteristics. Tension Crankshaft Positioning Sensorhas the advantage of high accuracy , wide measurement range , long life , simple structure , frequency response Coolant Temperature Sensor characteristics, and can work in harsh conditions , easy to realize miniaturization, holistic and species diversification . The disadvantage is that there is greater for large strain nonlinear , the output signal is weak , but you can take certain compensation measures. Therefore, it is widely used in automatic testing and control technology .