Vehicle body height detecting device, method and vehicle

Abstract

The invention discloses a vehicle body height detection device, a method and the vehicle. The device comprises: a sampling unit, which samples the charging and discharging time of the inductance in the height sensor of the vehicle according to a set sampling period to obtain the charging and discharging time , as sample data; the control unit, within the set sampling period, determines the maximum data length of the data group formed by the sampled data, denoted as n; and determines the average value of the first m sampled data within the data length ; Wherein, n and m are both positive integers, and m is less than or equal to n; the difference between the m+1th sampling data and the average value is used as the rate of change, and the sample is determined according to the rate of change The effective data length of the data group formed by the data; according to the data group of the sampling data corresponding to the effective data length, determine the vehicle body height of the vehicle. The solution improves the detection accuracy of the inductive height sensor for measuring the vehicle body height.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a vehicle body height detection device, a method and a vehicle, in particular to a trend prediction-based sensor data acquisition device, a method and a vehicle. Background technique [0002] In related solutions, the height sensors used to measure the height of the vehicle body mainly include inductive, Hall voltage, and current height sensors. Since the wiring harness is too long, the signals of the voltage type and current type height sensors will be severely attenuated. Therefore, for commercial vehicles with a long body, most of them use inductive height sensors to measure the height of the vehicle body. [0003] However, for the inductive height sensor, the range is from a few mH to hundreds of mH, and the inductance change corresponding to the angle (height) is relatively small, and the sampling accuracy is required to reach 0.1mH (about 1‰~5‰). The reliab...

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Problems solved by technology

[0006] The purpose of the present invention is to provide the vehicle body height detecting device, method and automobile of the automobile, to solve the inductive height sensor to the stability of the vehicle body height measurement and the real-time performance can not be synchronized, which affects the inductive height sensor to the automobile body height. The problem of the detection accuracy of the measurement can achieve the effect of improving the detection accuracy of the inductive height sensor for the measurement of the vehicle's body height

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