Slope detection method and system and vehicle
A detection method and detection system technology, applied in the automotive field, can solve problems such as high cost, narrow application range, complex information processing, etc., and achieve the effects of low cost, improved stability and reliability, and simple operation
Active Publication Date: 2019-12-03
GREAT WALL MOTOR CO LTD
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Problems solved by technology
[0003] In the related technology, the longitudinal acceleration sensor is equipped as standard on the car. The longitudinal acceleration sensor can measure the acceleration value generated by the slope when the vehicle is completely stationary, and then obtain the slope value, but the vehicle cannot effectively calculate the slope during driving. The slope value of the road, that is, the application range is relatively narrow, and the slope value of the vehicle can no longer be calculated when the vehicle is driving
[0004] The method of multi-sensing information fusion (single pendulum angular displacement sensor, longitudinal acceleration sensor, displacement sensor, etc.) can accurately calculate the slope value of the road, but its information is complex, the amount of calculation is large, and the cost is high and it is difficult to apply To the real vehicle controller, that is: information processing is very complicated, the amount of calculation is large, and the cost is high, so it is difficult to be widely used in vehicles
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[0046] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0047] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0048] figure 1 is a flowchart of a slope detection method according to an embodiment of the present invention.
[0049] Such as figure 1 As shown, the slope detection method according to one embodiment of the present invention includes the following steps:
[0050] S101: Acquire a vehicle state signal, wherein the vehicle state signal includes a first vehicle state signal and a second vehicle state signal obtained according to the first vehicle state signal.
[0051] In a specific example of the present invention, the first vehicle state signal includes but not limited to: longitudinal acceleration signal (vehLogAccel), wheel speed signal (wheelspeed), yaw rate signal (YawRate), mast...
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The invention provides a slope detection method and system, and a vehicle. The slope detection method comprises the following steps of: acquiring a vehicle state signal, wherein the vehicle state signal comprises a first vehicle state signal and a second vehicle state signal obtained according to the first vehicle state signal, and the first vehicle state signal comprises a longitudinal acceleration signal; obtaining a ramp prediction signal and a vehicle steady state signal according to the vehicle state signal; judging whether the vehicle drives on a ramp according to the ramp prediction signal and the vehicle steady state signal; and if yes, filtering the longitudinal acceleration signal, and determining the slope value of the ramp according to the filtering result and the longitudinalacceleration signal. The slope detection method can be used for calculating the slope value of a road simply, conveniently and accurately without adding additional hardware, and has the advantages ofsimple calculation and low cost.
Description
technical field [0001] The invention relates to the technical field of automobiles, in particular to a slope detection method, system and vehicle. Background technique [0002] The type of road and the condition of the road surface are one of the important factors that affect the smoothness and comfort of the vehicle when the vehicle is running, and sometimes it is also one of the judgment conditions for activating or closing some electronic control systems (such as: when the car is going downhill longitudinally After a large slope is detected, the steep slope descent function is automatically activated). If the type of road can be accurately and timely detected, it will be more convenient for developers to formulate different control strategies for different road surface information and different control systems in the design and development stage, thereby improving the quality of the vehicle. Among them, there are usually two working conditions for the vehicle to run on t...
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Login to View More IPC IPC(8): B60W40/076
CPCB60W40/076B60W2520/105B60W2520/28
Inventor 牛小锋孙玉周申光张英富刘自敏刘天培曾迁
Owner GREAT WALL MOTOR CO LTD