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A vehicle speed ratio calibration system and method based on Beidou system

A calibration system and calibration method technology, applied in the field of vehicle speed ratio calibration system, can solve problems such as time-consuming and labor-intensive, and achieve the effect of reducing maintenance costs and ensuring normal attendance

Active Publication Date: 2017-10-31
ZHENGZHOU YUTONG BUS CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a vehicle speed ratio calibration system and method based on the Beidou system to solve the time-consuming and labor-intensive problem caused by the need to calibrate the vehicle speed ratio at a detection point with a professional calibration line

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  • A vehicle speed ratio calibration system and method based on Beidou system
  • A vehicle speed ratio calibration system and method based on Beidou system

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] An embodiment of a vehicle speed ratio calibration device based on the Beidou system of the present invention

[0031] Such as figure 1 As shown, the vehicle speed ratio calibration device of the present invention includes a vehicle-mounted Beidou module, a vehicle speed calculation module, a vehicle speed comparator, a speed ratio corrector, a speed ratio memory and a CAN transceiver, and the output terminals of the vehicle-mounted Beidou module and the vehicle speed calculation module are compared with the vehicle speed The input end of the speed ratio controller is connected, the output end of the vehicle speed comparator is connected with the input end of the speed ratio corrector, the output end of the speed ratio corrector is connected with the input end of the speed ratio memory, and the output end of the speed ratio memory is ...

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Abstract

The invention relates to a vehicle speed ratio calibration system and method based on the Beidou system. The present invention first utilizes the Beidou satellite positioning system to obtain the Beidou positioning vehicle speed of the vehicle as the accurate vehicle speed; collects the pulse information input of the speed sensor, calculates the sensor vehicle speed according to the sensor vehicle speed calculation formula; then compares the Beidou positioning vehicle speed with the vehicle speed measured by the speed sensor, If the error between the two is greater than the set value, the speed ratio of the vehicle is adjusted; the speed ratio of the vehicle is calibrated with the adjusted speed ratio. The invention solves the problem of inaccurate speed and mileage of commercial vehicles after leaving the factory. Through the automatic calibration of the speed ratio of the invention, it avoids the need for the vehicle to go to the maintenance station for detection line calibration or the commercial vehicle service personnel to go to the scene to perform program flashing question. The invention saves time and labor, and is performed without affecting the normal operation of the customer's vehicle, ensuring the normal attendance rate of the vehicle, and at the same time, reducing the maintenance cost of the vehicle for the vehicle manufacturer.

Description

technical field [0001] The invention relates to a vehicle speed ratio calibration system and method based on the Beidou system. Background technique [0002] For commercial vehicles such as passenger transport and freight transport in operation, the accuracy of vehicle speed and mileage is crucial for judging overspeed, counting operating mileage and calculating fuel consumption. However, due to changes in tire pressure and wear, load changes, instrument replacement, The engine program is refreshed, resulting in a change in the speed ratio, so that the vehicle speed is inaccurate. If the vehicle speed is re-calibrated according to the new vehicle calibration method, the vehicle needs to be calibrated at a detection point with a professional calibration line, which is time-consuming, laborious and expensive. In addition , will also affect the normal operation of the vehicle. Contents of the invention [0003] The purpose of the present invention is to provide a vehicle spe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P21/02
Inventor 林明陈永波李永涛李剑锋
Owner ZHENGZHOU YUTONG BUS CO LTD
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