Vehicle load sensor

A load cell and capacitive sensor technology, applied in the field of sensors, can solve the problems of sensor body damage, unusability, and scrapping, etc., to prevent sensor damage, improve service life, and accurately measure the effect.

Inactive Publication Date: 2015-05-27
李晓刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned sensors all have the following defects, that is, when the automobile is running, it will inevitably run into a bumpy situation. At this time, an overshoot phenomenon will occur between the vehicle frame and the vehicle axle, The distance between them will be compressed sharply in a short period of time, which will inevitably cause the sensors rigidly installed on the axle and the workshop to be subjected to instantaneous impact and extrusion, resulting in deformation of the installation structure and scrapping, and even the entire sensor measuring head and sensor body will be damaged. damaged so that it cannot be used

Method used

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Examples

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Effect test

Embodiment 1

[0025] figure 1 It is a specific embodiment of the present invention. In this embodiment, the mechanical energy conversion mechanism includes a rotating shaft 31 and a return torsion spring 35. The rotating shaft 31 is located between the frame and the axle, and is arranged parallel to the frame and the axle. The bottom end of the vehicle frame is vertically provided with two support columns 11, and the rotating shaft and the support columns are assembled through bearings.

[0026] The rotating shaft is located in the middle of the two support columns and is provided with a bobbin 33, which is fixedly connected with the rotating shaft. The diameters of the two ends of the bobbin are greater than the diameter of the middle of the bobbin, and the flexible connector 32 is wound on the bobbin. The setting of the spool is used to prevent the sensor from being damaged due to the flexible connector being stuck in the bearing of the support column during the movement; on the other ha...

Embodiment 2

[0032] figure 2 It is another specific embodiment of the present invention. The difference between this embodiment and Embodiment 1 is: in this embodiment, the rotating shaft of the mechanical energy conversion mechanism is arranged on the vehicle axle 2 through the supporting column, and the rotating shaft and the supporting column are screwed together; in this embodiment, the pull ring 21 It is arranged on the vehicle frame 1, and the end of the flexible connector is connected to the pull ring of the vehicle frame. That is to say, in this embodiment, the mechanical energy conversion mechanism is arranged on the axle, and one end of the flexible connector is fixed on the vehicle frame, which is interchanged with the installation position of Embodiment 1.

[0033] The difference between this embodiment and Embodiment 1 lies in the structure of the measuring mechanism. In this embodiment, the measuring mechanism includes a capacitive sensor 37 and a signal conversion circuit...

Embodiment 3

[0036] The difference between this embodiment and Embodiment 2 lies in the structure of the capacitive sensor. In this embodiment, the capacitive sensor 37 includes a cylinder and a cylinder arranged in the cylinder. The cylinder of the capacitance sensor 37 is fixed on the bracket horizontally. The inner walls are in contact. When the rotating shaft moves left and right in the horizontal direction, the contact area between the capacitive sensor cylinder and the cylinder changes, that is, the capacitive signal output by the capacitive sensor changes accordingly.

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Abstract

The invention discloses a vehicle load sensor. The vehicle load sensor comprises a flexible connection part used for collecting change of distance between a vehicle frame and a vehicle axle, a mechanical energy conversion mechanism used for converting the change quantity of the distance between the vehicle frame and the vehicle axle in the vertical direction into a displacement quantity in the horizontal direction, and a measuring mechanism used for sensing the displacement quantity in the horizontal direction, wherein the mechanical energy conversion mechanism is arranged between the vehicle frame and the vehicle axle by virtue of a support column; the flexible connection part is connected with a vehicle body and the mechanical energy conversion mechanism; the output end of the mechanical energy conversion mechanism is connected with the input end of the measuring mechanism. The vehicle load sensor can be used for accurately measuring the vehicle load; when the vehicle frame suddenly faces downward or shakes left and right, the flexible connection part is used for buffering the impact force; the phenomenon that the damage to the sensor caused by the over-impact force generated by bumping of vehicle can be effectively avoided; the service life of the sensor is greatly improved.

Description

Technical field [0001] The invention involves the field of sensor technology, especially a vehicle load sensor. Background technique [0002] In the transportation industry, in order to ensure the safety of road transportation, the loading quality of the vehicle generally has strict regulations. The overweight will not only have serious hidden dangers to the safety of the vehicle, but also have a great threat to life safety;Due to overweight traffic accidents, it has a major loss to people's life and property safety.The traditional way to measure the weight of the car and cargo is to drive the car to the place where the land is loaded to weigh or estimate, which is not only troublesome, but it cannot monitor the load of the vehicle in real time. In addition, the installation and maintenance of the floor pop also requires higher costs. [0003] With the rapid development of sensing technology in recent years, the load sensor applied to vehicles has gradually moved towards the mark...

Claims

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Application Information

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IPC IPC(8): G01G19/03
Inventor 吕新海李晓刚张素辉李晓欣
Owner 李晓刚
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