Three-axis self-calibrating method for vehicle-mounted acceleration sensor
An acceleration sensor and acceleration sensor technology, applied in the testing/calibration of speed/acceleration/shock measurement equipment, multi-dimensional acceleration measurement, speed/acceleration/shock measurement, etc., can solve the problem that the acceleration sensor cannot provide real-time three-axis force changes, etc. question
Active Publication Date: 2014-10-08
QUECLINK WIRELESS SOLUTIONS
View PDF7 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the acceleration sensors on the market can only provide the magnitude of the three-axis force with a fixed sensor direction. At the same time, there are many uncertain factors in the position and horizontal angle of the vehicle-mounted electronic products, which eventually lead to the inability of the acceleration sensor to provide real-time three-axis (forward Direction, side direction, vertical direction) force change
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0044] like Figures 1 to 3 As shown, a three-axis self-calibration method of a vehicle-mounted acceleration sensor of the present invention comprises the following steps:
[0045] (1) Define the force model of the acceleration sensor
[0046] like figure 1 As shown, a right-handed three-dimensional coordinate system O-XYZ is established based on the force on the acceleration sensor 10 .
[0047] like figure 2 As shown, a new right-handed three-dimensional coordinate system generated by the acceleration sensor 10 during the actual motion of the vehicle is O-XnewYnewZnew. Xnew is the forward direction of the vehicle, that is, the direction of acceleration, Ynew is horizontal to the left, and Znew is the upward direction perpendicular to the forward direction of the vehicle, that is, the opposite direction of gravity.
[0048] Convert the three-dimensional coordinate system O-XYZ to O-XnewYnewZnew. From the transformation of linear algebra about the space coordinate system...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a three-axis self-calibrating method for a vehicle-mounted acceleration sensor. The three-axis self-calibrating method for the vehicle-mounted acceleration sensor comprises the following steps that (1) an acceleration sensor force-bearing model is defined; (2) the Znew-axis in the coordinate system O-XnewYnewZnew is determined; (3) the Xnew-axis in the coordinate system O-XnewYnewZnew is determined; (4) it is guaranteed that the Znew-axis is perpendicular to the Xnew-axis; (5) the Ynew-axis in the coordinate system O-XnewYnewZnew is determined; (6) the Xnew-axis and the Znew-axis are optimized. By the adoption of the three-axis self-calibrating method for the vehicle-mounted acceleration sensor, 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 the Y-axis forward direction, and the direction perpendicular to the ground as the Z-axis forward direction can still be established, and the new coordinate system is used as bases of a vehicle driving habit and restoration of a vehicle collision site.
Description
[0001] technical field [0002] The invention relates to the field of acceleration sensor calibration, in particular to a three-axis self-calibration method for a vehicle-mounted acceleration sensor. Background technique [0003] Vehicle electronic products need to accurately provide the real-time three-axis force of the vehicle as the basis for driving habit training and vehicle collision recovery. At present, the acceleration sensors on the market can only provide the magnitude of the three-axis force with a fixed sensor direction. At the same time, there are many uncertain factors in the position and horizontal angle of the vehicle-mounted electronic products, which eventually lead to the inability of the acceleration sensor to provide real-time three-axis (forward Direction, lateral direction, vertical direction) force changes. Through this patent, it is possible to provide real-time force changes in the three-axis direction of the vehicle under the condition that the v...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01P21/00G01P15/18
Inventor 袁学涛
Owner QUECLINK WIRELESS SOLUTIONS