Device for dynamically detecting heights of wheel trim and chassis of vehicle

Abstract

The utility model relates to the technical field of vehicle parameter measurement, and discloses a device for dynamically detecting the height of a wheel trim and a chassis of a vehicle, which comprises a laser distance measuring sensor assembly, a data acquisition instrument and a main control module, the laser distance measuring sensor assembly comprises a sensor mounting plate, two laser distance measuring sensors and a mounting base, the sensor mounting plate is in a sheet shape, and the two laser distance measuring sensors are fixed to the two sides of the sensor mounting plate respectively, so that laser rays of the two laser distance measuring sensors form a fixed and known included angle; the laser distance measuring sensor is in communication connection with the data acquisition instrument, and the mounting base is in bolted connection with the sensor mounting plate; and the laser distance measuring sensor assemblies are respectively arranged at the measuring points of the wheel trim and the chassis through the mounting bases. The height of the wheel trim and the height of the chassis can be accurately detected in the dynamic running process of the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parameter measurement technology, specifically to a device for dynamically detecting the height of vehicle wheel arches and chassis. Background Technology

[0002] With the rapid development of intelligent transportation systems and autonomous driving technologies, vehicle safety, comfort, and intelligence are constantly improving. Against this backdrop, accurately measuring key parameters such as wheel arch height and chassis height has become particularly important. Traditional static measurement methods can provide relatively accurate results when the vehicle is stationary. However, during vehicle operation, factors such as dynamic adjustments to the suspension system, vehicle body undulations caused by uneven road surfaces, and changes in vehicle speed cause the mounted laser sensors to no longer be perpendicular to the ground, resulting in unavoidable data errors. Static measurement methods cannot reflect the vehicle's true state in real time. Therefore, a device capable of accurately detecting wheel arch height and chassis height during dynamic vehicle operation is urgently needed, possessing significant practical and technical value. Utility Model Content

[0003] The present invention aims to provide a device for dynamically detecting the height of vehicle wheel arches and chassis, so as to accurately detect the height of wheel arches and chassis during the dynamic process of vehicle movement.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A device for dynamically detecting the height of vehicle wheel arches and chassis includes: a laser ranging sensor assembly, a data acquisition unit, and a main control module. The main control module is communicatively connected to the data acquisition unit. The laser ranging sensor assembly includes a sensor mounting plate, laser ranging sensors, and a mounting base. The sensor mounting plate is sheet-shaped. Two laser ranging sensors are respectively fixed on both sides of the sensor mounting plate, such that the laser beams of the two laser ranging sensors form a fixed and known included angle. The laser ranging sensors are communicatively connected to the data acquisition unit. The mounting base is bolted to the sensor mounting plate. The laser ranging sensor assembly is installed at measurement points on the wheel arches and chassis via the mounting base.

[0006] The principle and advantages of this solution are as follows: In practical applications, the analog output of the laser rangefinder sensor is continuously transmitted to the sensor data acquisition instrument. The main control module controls the sensor data acquisition instrument to trigger the acquisition of data for the corresponding time period according to the test requirements, in order to calculate the height of the vehicle's wheel arches and chassis. The positions of the two laser rangefinder sensors are fixed by the sensor mounting plate, so that the laser beams of the two sensors form a fixed and known angle. By measuring the values ​​of the two laser beams, the vertical height can be calculated. That is, this fixed and known angle can offset the measurement error caused by the forward tilt of the vehicle body during AEB. The system accurately measures the height of the vehicle's wheel arches and chassis in real time, thereby accurately monitoring the changes in vehicle posture under different conditions, providing important parameters for vehicle safety, stability, and comfort.

[0007] Preferably, as an improvement, the included angle ranges from 0° to 90°.

[0008] Technical benefits: It facilitates the measurement of the distance from the measurement point to the ground by the laser beams on both sides of the laser ranging sensor assembly, so as to calculate the wheel arch and chassis height based on the included angle.

[0009] Preferably, as an improvement, when the laser sensor assembly is installed at the measurement point on the wheel arch, the laser rangefinder sensor assembly is positioned relative to the wheel arch.

[0010] Technical benefits: Facilitates the standardization of measurement and enables the comparison of multiple sets of wheel arch data.

[0011] Preferably, as an improvement, the measurement point of the wheel arch is located at the midpoint of the wheel arch on the vertical line of the wheel arch axis direction.

[0012] Technical benefits: It makes it easier to reduce the complexity of calculating wheel arch height.

[0013] Preferably, as an improvement, the sensor mounting plate is installed perpendicular to the wheel arch axis, and the intersection of the projections of the two sensor beams in the plane in the laser ranging sensor assembly coincides with the projection of the emission points of the two ranging laser beams in the plane.

[0014] Technical benefits: It makes it easy to determine the starting point of the laser rangefinder sensor beam at the same position on the side of the vehicle body to form a fixed angle, thereby calculating the vertical height.

[0015] Preferably, as an improvement, the sensor mounting plate is provided with a limiting groove adapted to the sensor.

[0016] Technical benefits: Facilitates improved installation stability of laser rangefinders. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of the laser ranging sensor assembly in the embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the sensor mounting plate in an embodiment of the present invention. Detailed Implementation

[0019] The following detailed description illustrates the specific implementation method:

[0020] The reference numerals in the accompanying drawings include: sensor mounting plate 1, laser rangefinder 2, beam emission point 3, and limiting groove 4.

[0021] The basic implementation examples are as follows: Figure 1 As shown, a device for dynamically detecting the height of vehicle wheel arches and chassis includes: a laser rangefinder sensor assembly, a data acquisition unit, and a main control module. The main control module is communicatively connected to the data acquisition unit, and the data acquisition unit is communicatively connected to the laser rangefinder sensor assembly. The laser rangefinder sensor assembly is installed at the measurement points of the vehicle. In this embodiment, the laser rangefinder sensor assembly is installed on four sets of wheel arches and chassis of the vehicle to dynamically detect the height of the wheel arches and chassis respectively.

[0022] The laser ranging sensor assembly includes a sensor mounting plate 1, a laser ranging sensor 2, and a mounting base. The sensor mounting plate 1 is sheet-shaped with uniform thickness. The surface of the sensor mounting plate 1 is mounted perpendicular to the wheel arch axis to control the relative position of the laser ranging sensor 2 with the vehicle's wheel arch and chassis, facilitating calculations. Two laser ranging sensors 2 are included, each fixed to one side of the sensor mounting plate 1 with bolts. Figure 2 As shown, the sensor mounting plate 1 is provided with a limiting groove 4 that is adapted to the sensor, so as to improve the installation stability of the laser rangefinder sensor 2.

[0023] The intersection of the projections of the two sensor beams in the laser ranging sensor assembly onto the plane coincides with the projection of the emission point 3 of the two ranging laser beams onto the plane. The laser rays of the two laser ranging sensors 2 form a fixed and known angle, which ranges from 0° to 90°, so that the measured value of the laser beams on both sides of the laser ranging sensor assembly is the distance from the measurement point to the ground, thereby calculating the wheel arch and chassis height based on the angle.

[0024] The laser rangefinder 2 is communicatively connected to the data acquisition unit, and the mounting base is bolted to the sensor mounting plate 1. The laser rangefinder assembly is fixed to the measurement point on the vehicle body via the mounting base. During installation, the fixed position of the laser rangefinder 2 protrudes relative to the vehicle body to avoid obstruction of the laser beam by tires or other vehicle body parts.

[0025] The laser ranging sensor assembly is mounted on the wheel arch and chassis measurement points via mounting bases. The mounting bases connect the sensor mounting plate 1 to the wheel arch and adjust the horizontal position of the sensor mounting plate around the vehicle body in the X-direction. When the laser sensor assembly is mounted on the wheel arch measurement point, its relative position to the wheel arch is consistent, facilitating a unified measurement benchmark and comparison of multiple sets of wheel arch data. The wheel arch measurement point is located at the midpoint of the wheel arch on the vertical line perpendicular to the wheel arch axis.

[0026] The data acquisition unit transmits the measurement data collected by the laser rangefinder 2 to the main control module. The main control module has a pre-stored program that calculates and outputs the wheel arch and chassis height, thereby realizing the dynamic detection of the vehicle's wheel arch and chassis height.

[0027] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for dynamically detecting the height of vehicle wheel arches and chassis, characterized in that: The system includes a laser rangefinder sensor assembly, a data acquisition unit, and a main control module. The main control module is communicatively connected to the data acquisition unit. The laser rangefinder sensor assembly includes a sensor mounting plate, laser rangefinder sensors, and a mounting base. The sensor mounting plate is sheet-shaped. Two laser rangefinder sensors are fixed on both sides of the sensor mounting plate, so that the laser beams from the two laser rangefinder sensors form a fixed and known included angle. The laser rangefinder sensors are communicatively connected to the data acquisition unit. The mounting base is bolted to the sensor mounting plate. The laser rangefinder sensor assembly is mounted on the wheel arches and chassis at measurement points via the mounting base.

2. The device for dynamically detecting the wheel arch and chassis height of a vehicle according to claim 1, characterized in that: The included angle ranges from 0° to 90°.

3. The device for dynamically detecting the wheel arch and chassis height of a vehicle according to claim 1, characterized in that: When the laser sensor assembly is installed at the measurement point on the wheel arch, the laser rangefinder sensor assembly is in the same position as the wheel arch.

4. The device for dynamically detecting the wheel arch and chassis height of a vehicle according to claim 1, characterized in that: The measurement point for the wheel arch is located at the midpoint of the wheel arch on the vertical line perpendicular to the wheel arch axis.

5. The device for dynamically detecting the wheel arch and chassis height of a vehicle according to claim 1, characterized in that: The sensor mounting plate is installed perpendicular to the wheel arch axis. The intersection of the projections of the two sensor beams in the plane in the laser ranging sensor assembly coincides with the projection of the emission points of the two ranging laser beams in the plane.

6. The device for dynamically detecting the wheel arch and chassis height of a vehicle according to claim 1, characterized in that: The sensor mounting plate is provided with a limiting groove adapted to the sensor.

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