Vehicle ADAS and DSM product vehicle speed collection system and method

Abstract

The invention discloses a vehicle ADAS and DSM product vehicle speed collection system, and the system comprises a GPS signal receiver, a gyroscope sensor, a speed calculation module and a speed correction module, wherein the GPS signal receiver and the gyroscope sensor are connected with the speed calculation module, and the gyroscope sensor and the speed calculation module are connected with thespeed correction module. The invention also provides a vehicle ADAS and DSM product vehicle speed collection method, and the method comprises the steps: detecting the position information and acceleration information of a current vehicle, calculating the initial speed of a vehicle between two positioning points according to the position information and acceleration information, and correcting theinitial speed to obtain the current speed of the vehicle between the two positioning points. The system and method provided by the invention can achieve the real-time and accurate detection of the speed of the vehicle, and reduces the adding and modification risk and installation hidden troubles of equipment.

Description

technical field [0001] The invention relates to the technical field of vehicle active safety monitoring systems, in particular to a vehicle speed acquisition method for vehicle ADAS and DSM products. Background technique [0002] Vehicle active safety monitoring system ADAS and DSM are a set of safety monitoring products that monitor and assist the driver in real time. To analyze and determine the alarm level of danger and the control strategy of alarm output, there are two main ways to obtain the current vehicle speed, one is to obtain the CAN bus data of the vehicle by dismantling the vehicle parts and breaking the line, and the other is to obtain the data by cracking and converting the data. By dismantling the vehicle parts, looking for the vehicle speed signal line, breaking the line to connect to the vehicle speed signal line, and obtaining the vehicle speed signal through data conversion; the above two methods of obtaining vehicle speed have the following disadvantages...

AI Technical Summary

Problems solved by technology

[0003] 1. The vehicle CAN bus communication protocol is a custom protocol. Some vehicle manufacturers have not opened the output of vehicle speed data. To crack the CAN bus data without a communication protocol, professional engineers are required to measure and crack the data one by one, which requires a large workload and high installation efficiency. and low success rate;

[0004] 2. It is necessary to disassemble the vehicle parts and modify the vehicle communication and signal system without permission, which will cause great interference to vehicle communication and signal, and there will be a great potential safety hazard

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