Noncontact sensor

Abstract

The invention discloses a noncontact sensor which can solve the problem of friction brought by the traditional contact sensor, and can improve the detection precision and meet the detection demands of a vehicle on an electronic air throttle and an electronic exhaust gas recirculation valve. Because a programmable chip is adopted, the same type of sensors can be used in different types of electronic air throttles and electronic exhaust gas recirculation valves, the volume production is facilitated, and the product cost is lowered. Meanwhile, in research and development processes of new products, the noncontact sensor can adapt to technical requirements of different system integration factories, thus the development cost is greatly lowered, and the development period is shortened.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a non-contact sensor. Background technique [0002] With the development of automobile technology, more and more sensors have been applied in automobiles and change with the changes of automobile related devices. The throttle valve and exhaust gas recirculation valve on the car play a vital role in the fuel combustion efficiency of the car and the amount of pollutants in the exhaust gas. In order to know the opening degree of the throttle valve and the exhaust gas recirculation valve, it is often necessary to equip them with suitable sensors. Due to the improvement of automobile emission standards in my country, traditional mechanical throttle valves and mechanical exhaust gas recirculation valves will gradually be replaced by electronic throttle valves and electronic exhaust gas recirculation valves, and the traditional mechanical pull-wire drive method will become motor drive....

AI Technical Summary

Problems solved by technology

[0003] The traditional sensors are all contact sensors (that is, carbon film sliding rheostat sensors). Due to the friction loss of such sensors, their service life is often short and the detection accuracy is not high.

Therefore, traditional contact sensors cannot meet the detection needs of electronic throttle valves and electronic exhaust gas recirculation valves in automobiles.

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