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A vehicle speed acquisition system and acquisition method for ADAS and DSM products

A collection system and collection method technology, applied in the direction of linear/angular velocity measurement, velocity/acceleration/shock measurement, instruments, etc., can solve the problems of high cost, low installation efficiency and success rate, vehicle communication and signal interference, etc.

Active Publication Date: 2021-06-15
DONGGUAN NANNAR ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A vehicle speed acquisition system and acquisition method for ADAS and DSM products
  • A vehicle speed acquisition system and acquisition method for ADAS and DSM products

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Embodiment Construction

[0028] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] ADAS (Advanced Driver Assistance System) for vehicle, and DSM (Driving State Monitoring) for driver status monitoring system are both safety monitoring products that monitor and assist drivers in real-time driving. The speed of the vehicle during driving, and according to the speed analysis to determine the surrounding environmental hazards and real-time monitoring of the driver's state, can detect the driver's dangerous driving behavior, can make the driver aware of possible dangers in advance, and remind the driver to do a good job Precaution. Therefore, accurate and real-time vehicle speed collection is very necessary.

[0030] The present invention provides a vehicle speed collection system 10 for vehicle ADAS and DSM products to colle...

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Abstract

The invention discloses a vehicle speed acquisition system for vehicle ADAS and DSM products, which includes a GPS signal receiver, a gyroscope sensor, a speed calculation module, and a speed correction module. The GPS signal receiver and the gyroscope sensor are all connected to the speed calculation module. Both the sensor and the speed calculation module are connected with the speed correction module. The present invention also provides a vehicle speed acquisition method for vehicle ADAS and DSM products, which detects the position information and acceleration information of the current vehicle, calculates the initial speed of the vehicle between two positioning points according to the position information and acceleration information, and corrects the initial speed to obtain The current speed of the vehicle between two fixes. The vehicle speed acquisition system for ADAS and DSM products and the vehicle speed acquisition method for ADAS and DSM products can accurately detect the vehicle speed in real time, and reduce the risk of equipment installation and modification and hidden dangers in installation.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/00
CPCG01P3/00
Inventor 朱晓东何万顺阮鹏段光辉董辉王川林
Owner DONGGUAN NANNAR ELECTRONICS TECH
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