Displacement sensor

Abstract

The invention discloses a displacement sensor, which is characterized in that the displacement sensor comprises a shell, a circuit board and a rotating shaft, the shell is provided with a cavity, a metal terminal is arranged on the shell, one end of the metal terminal is connected with an external conducting wire, the other end of the metal terminal extends into the cavity of the shell, and a through hole for penetrating the rotating shaft is arranged on the wall of the shell; a conductor rail is arranged on the circuit board, a resistor is arranged on the conductor rail, the resistance of the resistor changes with the length of the resistor and the conductor rail is connected with the metal terminal; a brush is arranged on the side surface of the rotating shaft and is electrically connected with the resistor; the circuit board is arranged around the rotating shaft; and the metal terminal, the conductor rail, the resistor and the brush form a resistance-adjustable conducting circuit. The volume of the displacement sensor is small but the number of lines capable of transmitting signals is large. The displacement sensor is particularly suitable for hybrid vehicles and the safety and the stability of the output signals can be ensured. Moreover, the invention has the advantages of convenient assembling, environment-friendly process, cost saving and long service life.

Description

technical field [0001] The invention relates to a displacement sensor. Background technique [0002] Faced with the gradual reduction of oil resources and the continuous introduction of environmental protection policies for automobiles by governments around the world, more and more automobile manufacturers are beginning to realize that they should increase their technology development efforts and eagerly look for new alternative energy sources. Hybrid concept cars have become the entry point for many car manufacturers. Hybrid technology is a new technology that combines the advantages of traditional engines and electric motors. It relies on the cooperation of the traditional engine and the output power of the electric motor. The charging continuously switches and converts the power generated by the motor and the engine to achieve dual kinetic energy promotion. Such cooperation is mainly driven by the electric motor and supplemented by the engine, which achieves the expected...

AI Technical Summary

Problems solved by technology

Therefore, the ECU of a dual kinetic energy mode vehicle needs to collect more signals than a single kinetic energy mode vehicle. However, in the prior art, if the signal output by the sensor is to be increased, the number of sensor guide rails must be increased. For this structure design, the substrate must be hard Therefore, it is necessary to increase the surface area of ​​the substrate to increase the number of sensor rails, which leads to an increase in the volume of the sensor. Another way is to increase the number of sensors and install multiple traditional position sensors on the pedal. The structure of the pedal in this way is complicated, and the space of the car is not allowed, and the cost is also high

And the pedal position sensor of prior art can only provide one or two analog signals, or one analog signal and one switch signal

[0008] At present, the safety requirements for automobiles are getting higher and higher. The pedal position sensor in the prior art can only provide one or two analog signals, or one analog signal and one switch signal. If one of the internal circuits of the sensor is damaged, the car will be damaged. Unable to drive normally, bringing huge hidden dangers to the personal safety of drivers and passengers

Images