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Method and apparatus for obtaining automobile acceleration data

A technology of acceleration and automobiles, applied in multi-dimensional acceleration measurement, acceleration measurement using inertial force, etc., can solve the problems of waste of manpower, complicated operation, high cost, etc., and achieve the effect of avoiding high cost and simple operation

Active Publication Date: 2016-04-20
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for acquiring vehicle acceleration data, so as to solve the problem of complex operation, high cost and waste of manpower caused by calibration of the acceleration sensor through expensive calibration instruments in the prior art

Method used

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  • Method and apparatus for obtaining automobile acceleration data
  • Method and apparatus for obtaining automobile acceleration data
  • Method and apparatus for obtaining automobile acceleration data

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Experimental program
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Embodiment 1

[0021] This embodiment provides a method for obtaining vehicle acceleration data. The execution subject is a device for obtaining vehicle acceleration data. The device can be installed in the vehicle or separately, such as in a server or a mobile terminal. Specifically, it can be set according to actual needs. set up. Such as figure 1 Shown is a schematic flow chart of the method for acquiring vehicle acceleration data according to this embodiment. The method for obtaining the acceleration of the vehicle includes:

[0022] Step 101, acquiring the first detection data of the three-axis accelerometer when the car is stationary, and the second detection data corresponding to the three-axis accelerometer when the vehicle is accelerating in a straight line.

[0023] Among them, the three-axis accelerometer is a tool used to measure the acceleration of three axes in three-dimensional space.

[0024] There are many ways to judge that the car is still. For example, the speed of the...

Embodiment 2

[0039] This embodiment further exemplifies the method for acquiring vehicle acceleration data in Embodiment 1.

[0040] First, obtain multiple sets of first sampled data of the three-axis accelerometer when the continuous speed is 0, the first sampled data includes: the first X-axis sampled data, the first Y-axis sampled data and the first Z-axis sampled data, and Obtain first detection data according to a plurality of first X-axis sampling data, a plurality of first Y-axis sampling data and a plurality of Z-axis sampling data, the first detection data includes: X-axis target data, Y-axis target data and Z-axis target data.

[0041]Specifically, the step of acquiring multiple sets of first sampling data of the three-axis accelerometer when the vehicle's speed is 0 can be performed after receiving the user-triggered instruction for acquiring the acceleration data of the vehicle, that is, collecting the acceleration data on each axis of the three-axis accelerometer. Multiple se...

Embodiment 3

[0086] This embodiment provides a device for acquiring vehicle acceleration data, which is used to execute the method for vehicle acceleration data in Embodiment 1. The device can be set in the car, or it can be set separately, for example, in a server or a mobile terminal. Specifically, it can be Set according to actual needs. Such as Figure 4 Shown is a schematic structural diagram of the device according to this embodiment. The device includes a first acquisition module 401 , a second acquisition module 402 and a correction module 403 .

[0087] Among them, the first acquisition module 401 is used to acquire the first detection data of the three-axis accelerometer when the car is stationary, and the second detection data corresponding to the three-axis accelerometer when the car is accelerating in a straight line; data and the second detection data, obtain a correction matrix, and the correction matrix is ​​used to correct the coordinate system direction of the three-axi...

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Abstract

The invention provides a method and apparatus for obtaining automobile acceleration data. The method comprises: first detection data of a three-shaft accelerometer in an automobile stationary state as well as second detection data corresponding to the three-shaft accelerometer in a linear speed-up state are obtained; according to the first detection data and the second detection data, a correction matrix is obtained, wherein the correction matrix is used for correcting a coordinate system direction of the three-shaft accelerometer; and with the correction matrix, measurement data of all coordinate shafts of the three-shaft accelerometer are corrected to obtain acceleration data of the automobile. With the method and apparatus, defects of high costs and manpower wasting because of utilization of a precise measurement instrument for acceleration sensor correction in the prior art can be overcome. Moreover, the operation is simple.

Description

technical field [0001] The invention relates to vehicle monitoring technology, in particular to a method and device for acquiring vehicle acceleration data. Background technique [0002] With the continuous development of the national economy and the improvement of people's living standards, the transportation industry has developed rapidly, and cars have become an indispensable travel tool for people. The safety and comfort of cars have also attracted more and more attention from the public. Among them, because the vehicle acceleration data is one of the key factors to ensure the safety system and smoothness of the vehicle, the acquisition of the vehicle acceleration data is particularly important. [0003] In the prior art, an acceleration sensor is generally installed on a vehicle to collect acceleration data. However, there will always be more or less errors in the installation process, and such errors will cause inaccurate acceleration data collection. Therefore, it is...

Claims

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Application Information

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IPC IPC(8): G01P15/18
CPCG01P15/18
Inventor 闫枫骆俊凯华山叶永建李晔彤杨飚
Owner SAIC MOTOR
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