Non-contact single signal throttle position sensor

Abstract

This invention discloses a non-touch single signal air damper position sensor in the sensor field, comprising a shell and a converting circuit. The shell is provided with a rotator which is linkable with a rotating shaft of the air damper. A shielding cover is fixed to the periphery of the rotor. A magnetic steel is fixed to the periphery of the shielding cover. Two sections of magnetic bunchers symmetrically arranged in the arch are fixed to shell located at the outer side of the magnetic steel. The magnetic buncher, the shielding cover, the magnetic steel and the rotor are coaxially arranged. A Hall component of input end of the converting circuit is mounted between two magnetic bunchers. When working, the rotor drives the magnetic steel to rotate, the Hall component transfers the voltage change signal to an electric unit via the converting unit so as to control the accelerator opening by the electric unit. This invention with small size, light weight, wide frequency response, wide dynamic range, good temperature property, convenient speed regulating, reliable use and long life does not have friction and noise, and can be applied to the automatic control of the motor so as to control the mixing ratio of the oil and gas thereof.

Description

technical field [0001] The invention relates to a sensor, in particular to an engine throttle position sensor. Background technique [0002] In the prior art, the role of the engine throttle position sensor is to convert the position or opening of the throttle into an electrical signal and transmit it to the electronic control unit as the basis for the electronic control unit to determine the operating conditions of the engine. throttle opening adjustment. At present, there is a contact-type throttle position sensor, the structure of which mainly includes a rotor linked with the throttle shaft, the rotor is arranged in a casing, and a conversion circuit is also arranged in the casing, and the circuit board of the conversion circuit is arranged in the casing. The power input and signal output interfaces of the circuit are set on the casing, and a potentiometer connected to the input end of the conversion circuit is arranged in the casing. The resistance plate of the potentio...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the sliding contacts on the resistance plate will cause wear and tear, resulting in a short service life. In addition, the vibration of the engine will cause the sliding contacts to be disengaged instantly, and the oxidation and wear of the resistance plates and sliding contacts will occur. The abrasive particles will lead to poor contact or change of output resistance, resulting in signal distortion, poor engine working condition, affecting the reliable use of the engine

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