Signal testing device of fixed frequency sensor

A technology of signal testing and fixed frequency, which is applied in the field of sensor detection, can solve the problems of not being able to know the sensor product, not giving the Hall sensor detection, etc., to achieve the effect of improving efficiency, visually seeing the detection results, and taking less time

Inactive Publication Date: 2014-03-26
鼎佳(天津)汽车电子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] There is no technical solution on how to detect the Hall sensor in the prior art, so it is impossible to know whether the produced sensor product is normal, and how to simulate the rotational speed signal to test the sensor is a problem faced in practical applications

Method used

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  • Signal testing device of fixed frequency sensor
  • Signal testing device of fixed frequency sensor

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Embodiment Construction

[0015] The present invention will be described in detail below with reference to the drawings and examples.

[0016] figure 1 It is a structural schematic diagram of the signal testing device of the fixed frequency sensor of the present invention; figure 2 It is a structural schematic diagram of the signal disc in the signal testing device of the fixed frequency sensor of the present invention.

[0017] Such as figure 1 , figure 2 As shown, the signal testing device of the fixed frequency sensor of the present invention includes: a motor 1 driven by a power source to drive the motor shaft 3 to rotate; Teeth 4, the center position of the signal plate is fixed with the motor shaft, driven by the motor and rotates coaxially with the motor shaft; the test platform 5, the motor and the sensor fixing frame 6 are fixed on the upper plane; the sensor fixing frame 6 is installed on the test platform, fixed Sensor, whose position corresponds to the signal plate on the motor; power...

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Abstract

A signal testing device of a fixed frequency sensor comprises a motor, a signal panel, a test platform, a sensor fixing frame, a power supply, an oscilloscope and a shaping circuit, wherein the signal panel adopts a disc-shaped structure; a plurality of alternated panel teeth are formed at the periphery of the disc-shaped structure; a motor shaft is fixed at the center position of the signal panel; the signal panel is driven by the motor, and rotates coaxially with the motor shaft; the sensor is used for collecting signals of the signal panel mounted on the motor and rotating at a fixed speed; the panel teeth at the periphery of the signal panel have a space therebetween. The signal testing device provided by the invention can determine whether the sensor is normal in signal collection or not by comparing the formed square wave collected by sensing the panel teeth and space transformation through the sensor with prospective parameters of the sensor, and has the advantages of less detection time, visible detection results, and capability of improving production detection efficiency.

Description

technical field [0001] The invention relates to the technical field of sensor detection, in particular to a signal testing device for a fixed-frequency sensor that uses a fixed-rotational signal disc to simulate the working environment of the sensor, thereby pre-detecting sensor parameters. Background technique [0002] There are many types of speed sensors, because the Hall sensor has no contact, long life, high reliability, no spark, no self-excited oscillation, good temperature performance, strong anti-pollution ability, simple structure, firm, small size, impact resistance, etc. Advantages, so the Hall effect proximity sensor is selected as the speed sensor. The sensor is a switching element and directly outputs a pulse frequency signal. However, due to electromagnetic noise interference, the signal must be filtered and shaped to improve acquisition accuracy and anti-interference ability. The processed signal is converted into a standard square wave signal, and the puls...

Claims

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Application Information

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IPC IPC(8): G01P21/02
Inventor 张凤洪
Owner 鼎佳(天津)汽车电子有限公司
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