Patent
Method for calibrating three-axis acceleration sensor
Wang Shengyang,Sheng Yun,Wang Yifeng +2 more
- 28 May 2014
6
TL;DR: In this paper, a method for calibrating a three-axis acceleration sensor is described. But the method is not suitable for the case of a single sensor, as the calibration is performed according to an error value obtained by mathematical calculation, which is a natural number greater than or equal to 2.
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Abstract: The invention relates to a method for calibrating a three-axis acceleration sensor. The method for calibrating the three-axis acceleration sensor comprises the following steps: A, reading a three-axis output value of the three-axis acceleration sensor; B, data screening, namely comparing the three-axis output value with N three-axis output values before, wherein the three-axis output value read at this time is taken as a possible resting point if the difference value is within a first preset threshold; C, calculating the quadratic sum of the three-axis output value of the possible resting point, and then comparing the quadratic sum with a measured gravity value of the three-axis acceleration sensor in a quiescent state, wherein correcting is not needed if the difference value is within a second preset threshold, otherwise, calibrating is performed according to an error value obtained by mathematical calculation; and D, returning to the step A, wherein N is a natural number greater than or equal to 2. By the method disclosed by the invention, the problem of drift after calibration of the acceleration sensor can be solved.
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Citations
Patent
Three-axis self-calibrating method for vehicle-mounted acceleration sensor
Yuan Xuetao
- 12 Oct 2018
TL;DR: In this paper, a three-axis self-calibrating method for a vehicle-mounted acceleration sensor is presented, where the acceleration sensor can be placed at any position of a vehicle, a new coordinate system with the vehicle advancing direction as the X-axis forward direction, the horizontal leftward direction as a Y-axis backward direction, and the direction perpendicular to the ground as the Z-axis forwarding direction can still be still be established.
9
Patent
VR equipment nine-shaft sensor performance testing method, device and testing rotary table
Jiang Zhitao,Tang Xinyue,Li Guangyou +2 more
- 24 May 2017
TL;DR: In this paper, a VR equipment nine-shaft sensor performance testing method, a device and a testing rotary table are presented, where the method comprises the following steps: controlling the VR equipment to rotate according to preset parameters, wherein the preset parameters at least comprise a first rotating angle; obtaining triaxial gyroscope data of the 9-sh shaft sensor of the VE, after the VR Equipment rotates; using a preset algorithm to convert the triaxis data into a second rotating angle.
7
Patent
Triaxial self calibration method and device for vehicle-mounted acceleration sensor
Geng Wentong,Li Xu,Huang Yi +2 more
- 13 Jul 2016
TL;DR: In this paper, a triaxial self-calibration method and device for a vehicle-mounted acceleration sensor is presented, which consists of a z axis calibration module, an x y plane determining module, a y axis calibrating module and a calibration matrix calculation module.
5
Patent
Magnetometer calibration method and device
Shan Tijiang,Chen Weiliang +1 more
- 30 Mar 2018
TL;DR: In this article, a magnetometer calibration method and device is presented, which comprises the steps: selecting a first to-be-detected shaft and a second to be-detectable shaft from three shafts of the magnetometer.
2
Patent
Accelerometer calibration method and device
Chen Weiliang
- 12 Jun 2018
TL;DR: In this paper, an accelerometer calibration method and device is presented, which includes rotating the accelerometer to the current position so that the acceleration detection value of each axis is non-zero.
1
References
Patent
Method for calibrating accelerometer under unsupported state
Hai Zhang,Youze Mao,Xiaorong Shen,Zhang Ren +3 more
- 28 Sep 2011
TL;DR: In this paper, a method for calibrating an accelerometer under an unsupported state, which is applied to an inertial navigation system with the capacity of initially aligning with a static base attitude, is presented.
8
Patent
Method of recalibrating inertial sensors
Damien Dusha,Paul Dale +1 more
- 29 Aug 2012
TL;DR: In this article, a method and system of recalibrating a sensor, preferably by determining a sensor bias for an Inertial Measurement Unit (IMU) in a vehicle, is provided.
4
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