A method and device for detecting a car impact signal

A signal detection and tapping signal technology, which is applied in the field of automobile impact signal detection and automobile anti-theft monitoring, can solve the problems of sensor noise and other problems, and achieve the effects of strong system stability, low power consumption, and cheap components

Active Publication Date: 2019-05-14
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the sensor itself will generate some noise

Method used

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  • A method and device for detecting a car impact signal
  • A method and device for detecting a car impact signal
  • A method and device for detecting a car impact signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 Shown, a kind of automobile impact signal detection method, its steps are as follows:

[0044] Step 100 The acceleration sensor collects the acceleration signals of the car in the horizontal front-back direction, the horizontal left-right direction, and the direction perpendicular to the horizontal plane. The single-chip microcomputer collects the data from the acceleration sensor and processes the data. The acceleration sensor and the single-chip microcomputer are integrated in the same printing In the circuit board (PCB, Printed Circuit Board), it is installed on the top of the inner side of the car and communicated with the monitoring module. The horizontal front and rear directions of the acceleration sensor are parallel to the windows on both sides of the car; the single-chip microcomputer reads the acceleration in the acceleration sensor through the SPI bus Data signal; after parking, the impact signal detection system is automatically activated t...

Embodiment 2

[0062] A car shock signal detection device is characterized in that it includes an acceleration sensor and a single-chip microcomputer, and the acceleration signals collected by the acceleration sensor in the three directions of the horizontal front-back direction, the horizontal left-right direction, and the direction perpendicular to the horizontal plane are used as the acceleration signals in three directions , characterized in that it includes a reading module, a noise reduction module, a combination processing module, a storage module, a first calculation module, a first comparison module, a second calculation module, a second comparison module and a monitoring module.

[0063] After parking, the impact signal detection system is automatically started to detect the impact signal. The reading module reads the acceleration signals in the x, y, and z directions collected by the acceleration sensor. Represents the acceleration signal value in the horizontal left and right dire...

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Abstract

The invention, which relates to the automotive electronic field, provides a method and apparatus for detecting an impacted signal of an automobile, wherein the method and apparatus aer used for anti-theft monitoring of the automobile. The method comprises: starting an impacted signal detection system; initializing an acceleration sensor and a single-chip microcomputer; collecting an acceleration signal value; carrying out noise reduction processing on the acceleration signal value; carrying out combined processing; storing a signal value after combined processing; calculating a changing amount of the combined signal value; comparing changing amount of the combined signal value with an impact signal threshold and carrying out determination; calculating a static signal value based on a determination result; comparing the static signal value with a still threshold; and starting a visual monitoring system according to a determination result. The method and apparatus have advantages of good working real-time performance, high system robustness, high detection method flexibility, effective filtering of sensor noises, low power consumption, and low price; and the apparatus based on the detection method has high competitiveness in market.

Description

technical field [0001] The invention relates to the field of automobile electronics, in particular to a method for detecting an automobile impact signal, which is used for automobile anti-theft monitoring. Background technique [0002] According to statistics from the Traffic Management Bureau of the Ministry of Public Security, as of the end of 2015, the number of motor vehicles in my country reached 279 million, including 172 million cars. At present, cars have become an increasingly common means of transportation in people's daily lives, and car theft crimes have become a social issue. Sustained focus. Among them, the theft of items in the car is a common crime and has become an important factor threatening the safety of personal property. At present, although the car anti-theft technology is relatively advanced, mainly including mechanical anti-theft devices, chip anti-theft devices, electronic anti-theft devices, GPS satellite positioning car anti-theft system network t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007G01M7/02G05B19/042
CPCG01M7/025G01M17/007G05B19/0423
Inventor 刘洪海李松蔡海斌方银锋陈胜勇
Owner SHANGHAI JIAO TONG UNIV
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