For sensors recognize small misunderstanding

Sensor type is very large, we usually use the knife in the type of sensor is a lot , in fact, the sensor is of some small errors .Gyro inertial space is used to measure the relative rotation of the carrier or the navigation, guidance in the exercise as a part of the control vector . Cell phone use a micro silicon gyroscope gyro , this gyro integration is very good, but the most important is the price is very cheap, but its drawback is that accuracy is not high . In practice , if used for accurate navigation , guidance , the need for very complex and compensation solver . As for the game , mobile phone use, generally using a two -axis gyroscope , less precision . Gravity sensing Positioning Sensor is a two -axis accelerometer , through the attitude matrix , solves for the horizontal position. Therefore, through it can calculate the approximate angle of inclination relative to the horizontal plane and so on . The above-mentioned acceleration sensor is an accelerometer , although it is known as the acceleration Engine Coolant Temperature Sensor  , but in fact it can not directly measure the acceleration measured is "specific strength" , by comparing the force equation , can calculate the acceleration . After integration , you can calculate the speed , and then after integration , can be calculated from the hotel. But must use two -axis accelerometer or triaxial accelerometer to measure the horizontal plane , which is an acceleration Engine Position Sensor to be used in combination in order to measure the horizontal plane . Daily phone call is actually two -axis acceleration sensor or accelerometer triaxial accelerometer . Gravity acceleration sensor is a sensor only; gravity sensor values ​​units are generally tend to describe g = 9.81m/s2 ; while m/s2 acceleration sensors are generally used to describe directly ; but in actual use for more intuitive measure of magnitude of the acceleration , normal discourse also measured in g ; no matter what is measured in units , there is no fundamental change in the sensor , that is to use micro voltage value converted into the corresponding numerical description can continue to use a unit . In the selection of gyroscope, accelerometer sensor , accelerometer, gravity sensor, we can be resolved with reference to the above , but the above is approximate and contact said some differences in the actual use of the process is not very clear if we choose , we can consult the sensor manufacturers and technical personnel to choose, in order to avoid wrong .