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Vehicle carried road slope angle measuring system and vehicle carried road slope angle measuring method

A technology of road slope and measurement system, which is applied in the direction of measuring inclination, measuring devices, vehicle components, etc., and can solve problems such as low precision and inaccurate road slope values

Active Publication Date: 2006-07-12
BYD CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Since the pitch angle cannot be ignored, the road slope value measured by this device is inaccurate and its accuracy is not high

Method used

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  • Vehicle carried road slope angle measuring system and vehicle carried road slope angle measuring method
  • Vehicle carried road slope angle measuring system and vehicle carried road slope angle measuring method
  • Vehicle carried road slope angle measuring system and vehicle carried road slope angle measuring method

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Embodiment Construction

[0045] Specific embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings.

[0046] like figure 1 and figure 2 Shown, the vehicle-mounted road slope angle measuring system of the present invention comprises a vehicle-mounted GPS speed measuring instrument 20 positioned at the roof of the motor vehicle, a gyroscope 50 installed at the center of mass (GC) of the motor vehicle, a gyroscope mounted on the front suspension of the motor vehicle The front suspension displacement sensor 30 and the rear suspension displacement sensor 40 installed on the rear suspension of the motor vehicle, as well as an electronic control unit (ECU) 60 and a driving control module 70 . Both the displacement sensors 30 , 40 and the gyroscope 50 are electrically connected to an electronic control unit (ECU) 60 . The driving control module 70 is electrically connected with the electronic control unit, and is used for effectively controlli...

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Abstract

This invention provides a vehicle path grade angle measuring system and its measuring method. The measuring system includes: GPS speed measuring instrument, which is used to measure the flashy vertical velocity Vv and horizontal velocity Vh of the vehicles; the front suspension position sensing device installed at the front suspension of the vehicle, which is used to measure the related flashy displacement Zf of the body at the front suspension that is perpendicular to the path; the back suspension position sensing installed at the back suspension, which is used to measure the related flashy displacement Zf of the body at the back suspension that is perpendicular to the path; the electric control cell, which connects with the CPS speed measuring instrument, the front suspension position sensing device and the back suspension position sensing device to obtain the value of VvíóVhíóZfíóZr, and it computes the path grade angel ª’ according to the formula (1)íó(2) and (3). ª‡GPSú¢arctan(Vv / Vh) (1)ú” ª†ú¢arctan((Zf-Zr) / L) (2)ú” ª’ú¢ª‡GPS-ª† (3).

Description

technical field [0001] The invention relates to a vehicle-mounted road slope angle measurement system and a vehicle-mounted road slope angle measurement method for measuring the slope angle of a road when a motor vehicle goes uphill. Background technique [0002] In order to enable the motor vehicle to obtain better driving performance when driving on a slope, it is necessary to install a measuring device on the vehicle body to calculate the slope angle of the road. The U.S. Patent No. 6,714,851 discloses a device capable of measuring road slope angles, but this device has a complex structure, requiring multiple sensors such as steering wheel angle sensors, acceleration sensors and sensors to be installed in the entire motor vehicle system. The wheel speed sensor has a high cost, and the measured road slope angle includes the pitch angle of the motor vehicle. Pitch angle means that the front and rear wheels of the motor vehicle on the same straight line are each regarded as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/00B60R21/01
Inventor 宋佑川
Owner BYD CO LTD
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