On the role of the acceleration sensor compensation

The most common application acceleration sensor is used to detect the acceleration and direction of the phone , while the phone when it is only by standing gravity , so many people put the acceleration sensor function is also called gravity sensing capabilities. Acceleration sensor 's strengths lie in the force measuring device . Yeah, but the device used to measure the position relative to the ground placed , then the accuracy is not high. Acceleration sensors can be used with a fixed reference coordinate system gravity , there is a linear or rotary motion tilting movement is limited , but a range of applications . Handle both linear and rotational movement , you need to put the acceleration sensor and a gyro sensor combination. If you want the device will not get lost in the movement direction, coupled with Crankshaft Positioning Sensor , a gyro , a magnetic sensor and an acceleration sensor is often used in conjunction with each other there is a mutual compensation between . Application of the magnetic sensor by measuring the magnetic flux electronic compass to determine the size direction . When the magnetic Coolant Temperature Sensor is tilted, the geomagnetic flux through the magnetic sensor will change , so that the direction of the point of error . Therefore, if tilt correction without electronic compass , requiring users to horizontally. The acceleration sensor can measure the angle of this principle, the tilt can be compensated electronic compass . In addition , GPS systems are three by 120 degrees by receiving satellite signals distribution finalize the object orientation . In some special occasions and landforms, such as tunnel, skyscrapers, jungles , GPS signals may be weak or even completely lost , which is called the dead . And through the installation of an acceleration sensor and a common inertial Cooling Temperature Sensor , the system can measure the dead zone . Time integral of the acceleration sensor , it becomes a change in speed per unit time , thereby measure the movement of the object in the dead zone . .