Compensate the acceleration sensor

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 Shaft Position 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 Car Temperature Sensoris 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 Crankshaft Positioning 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 navigation sensors, 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.