Tangentially-mounted Hall type non-contact vehicle speed sensor and control system thereof

Abstract

The invention discloses a tangentially-mounted Hall type non-contact vehicle speed sensor and a control system thereof, and relates to the field of automobile sensors. The tangentially-mounted Hall type non-contact vehicle speed sensor comprises: a mounting shell and an electronic circuit, wherein an induction area is axially arranged on one side of the top end of the mounting shell; the inductionarea is positioned in the mounting shell; a connector is arranged at the tail end of the mounting shell and is connected with an external control unit; the mounting shell is fixedly connected with agearbox shell; a gap is reserved between the induction area and an induction wheel on a gearbox output shaft; the top end plane of the induction area is parallel to the tangential direction of the induction wheel; the electronic circuit is arranged in the mounting shell and is connected with the induction area and the connector respectively. The mounting way is more flexible; a voltage signal generated by the induction area meets the requirements through filtering, shaping and amplification, and then is output and transferred to the whole vehicle control unit through the electronic circuit andthe connector, thereby accurately and quickly reflecting the vehicle speed.

Description

technical field [0001] The invention relates to the technical field of automobile sensors, in particular to a Hall-type non-contact vehicle speed sensor installed in a tangential direction and a control system thereof. Background technique [0002] With the popularization and commercialization of automobiles, the market demands more and more stringent requirements for vehicle sensors. Among them, the vehicle speed sensor and its indicator (vehicle speedometer) are important tools for providing vehicle speed information. [0003] The main function of the vehicle speed sensor is to detect the speed of the output shaft of the gearbox, and the signal is fed back to the instrument and control unit of the vehicle to calculate the driving speed of the vehicle. At present, the device for measuring the vehicle speed and mileage signal is generally a contact sensor, which generates a pulse signal through the rotation of the magnetic pole of the mechanical screw output shaft, thereby ...

AI Technical Summary

Problems solved by technology

At present, the structure of the existing automobile gearbox has been fixed, so that most models cannot use non-contact sensors, and continue to use the contact structure

The existing automobile gearbox needs to switch the original contact speed sensor to a non-contact sensor. The main problem is: in order to meet the vertical installation of the sensor and the center line of the target wheel, the rear cover of the gearbox needs to be changed, but the existing gearbox Most of them are aluminum alloy shells, and the casting cost is too high, resulting in high switching costs

Images