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Vehicle load capacitive sensor

A capacitive sensor and vehicle technology, applied in the field of sensors, can solve the problems of insurmountable sensor damage, increased distance, etc., and achieve the effects of improving service life, improving sensitivity, and ensuring accuracy

Active Publication Date: 2018-04-03
河北重优科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this application overcomes the damage to the sensor caused by the instantaneous extrusion of the car, when the vehicle rolls suddenly, the distance between the axle and the frame will suddenly increase, which will inevitably make the connection between the axle and the vehicle The sensor between the frame is separated, even if the sensor and the axle are connected softly, it cannot overcome the damage to the sensor caused by the instantaneous strong tensile force

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In this embodiment, the measuring mechanism is a capacitance measuring mechanism, and the capacitance measuring mechanism includes an outer tube 4 and an inner tube 5, the outer tube 4 is set in the housing 3, the inner tube 5 is coaxially set in the outer tube 4, and the slider 6 is set in the On the inner tube 5, it can move up and down along the inner tube with the up and down movement of the vehicle frame. In the capacitance measuring mechanism, the lead-out end of the inner tube is the positive pole of the capacitor, and the lead-out end of the outer tube is the negative pole of the capacitor. In order to improve the sensitivity of the capacitance measuring mechanism, the slider is made of high dielectric constant material, and the air with a small dielectric constant is between the outer tube and the inner tube.

[0024] The working principle of the present invention is as follows.

[0025] When the vehicle is unloaded, the flexible connector is in a tensioned st...

Embodiment 2

[0029] In this embodiment, the measuring mechanism is a capacitance measuring mechanism, and the capacitance measuring mechanism includes an outer tube 4 fixedly arranged in the housing and an inner tube 5 arranged in the housing and moving up and down with the vehicle frame, that is, the inner tube realizes the function of a slider as a moving part ; In the capacitance measuring mechanism, the lead-out end of the inner tube is one pole of the capacitor, and the lead-out end of the outer tube is the other pole of the capacitor. The working principle of the capacitance measuring mechanism in this embodiment is to change the output value of capacitance by changing the contact area between the outer tube and the inner tube.

Embodiment 3

[0031] In this embodiment, the measuring mechanism is a capacitance measuring mechanism, and the capacitance measuring mechanism includes an inner tube 5 fixedly arranged in the housing and an outer tube 4 arranged in the housing and moving up and down with the vehicle frame, that is, the outer tube realizes the function of a slider as a moving part ; In the capacitance measuring mechanism, the lead-out end of the inner tube is one pole of the capacitor, and the lead-out end of the outer tube is the other pole of the capacitor. The principle of the capacitance measuring mechanism in this embodiment is the same as that in Embodiment 2.

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Abstract

The invention discloses a vehicle load capacitive sensor, which comprises a housing fixedly arranged on the vehicle frame. A measuring mechanism for measuring the vertical displacement of the vehicle frame is arranged in the housing. The slider of the output value of the mechanism; the slider is provided with a connecting rod extending out of the housing, and the junction point of the connecting rod and the housing is set as the fulcrum of the connecting rod; the connecting rod is located on the outside of the housing and is equipped with an elastic member , the outer end of the elastic component is connected to the axle through a flexible connector. The invention can accurately measure the load of the vehicle without being damaged due to the instantaneous large change of the distance between the vehicle frame and the vehicle axle, thereby greatly improving the service life of the sensor.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a vehicle load sensor. Background technique [0002] In the transportation industry, in order to ensure the safety of road transportation, there are generally strict regulations on the loading quality of vehicles. Overweight will not only pose serious hidden dangers to vehicle safety, but also pose a great threat to human safety; especially cargo vehicles , Traffic accidents caused by overweight abound, which bring great losses to the safety of people's lives and properties. The traditional method of measuring the weight of vehicles and cargo is to drive the vehicle to a place equipped with a weighbridge for weighing or estimation, which is not only cumbersome but also unable to monitor the vehicle's cargo in real time; in addition, the installation and maintenance of the weighbridge also requires high costs. [0003] In recent years, with the rapid development of sensing techno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G19/02
Inventor 李晓刚张素辉
Owner 河北重优科技有限公司
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