Device for detecting vehicle speed sensor performance
A vehicle speed sensor and detection device technology, applied in measurement devices, speed/acceleration/impact measurement, instruments, etc., can solve the problems of complex test process, poor accuracy, and high cost of dynamometer system, and achieve multi-function and simple structure. Effect
Inactive Publication Date: 2011-03-30
珠海市圣丰机动车辆检测设备有限公司
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Problems solved by technology
Use the dynamometer system to test the performance of the vehicle speed sensor. The vehicle speed sensor must be installed on the real vehicle, and the dynamometer system is used for detection. The test process of this test method is complicated, and the cost of the dynamometer system is very high.
The performance of the vehicle speed sensor is measured manually. For the magnetoelectric vehicle speed sensor, the internal magnetic field changes due to the proximity of metal objects. Using an oscilloscope to observe changes in the output voltage to achieve detection, low efficiency and poor accuracy
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[0020] see figure 1 , a vehicle speed sensor performance detection device of the present invention comprises a frame 1, a drive motor 2, a turntable 3, a shaft coupling 4, a clamping frame 5, a positioning frame 6, a standard sensor 7, and a single-chip microcomputer (not shown).
[0021] see figure 1 with figure 2 , the frame 1 has a horizontally arranged workbench 11, and the bottom surface of the workbench 11 is fixed with a drive motor 2. The output shaft of the drive motor stretches out from the top surface of the workbench 11, and the speed of the drive motor 2 is controlled by a single-chip microcomputer; The portion of the output shaft of the drive motor 2 adjacent to the top surface of the worktable 11 is fixedly connected with a turntable 3 through a pin shaft. Twelve teeth 31 are uniformly distributed on the periphery of the turntable 3, and eight teeth 31 are evenly distributed on the top surface of the turntable 3 in the upper direction. Screw 32; the top surfa...
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The invention relates to a detection device for vehicle speed sensor performances, which comprises a stander; wherein, the detection device also comprises an MCU. A driving motor is fixed on the stander; a rotating disk and a coupler which is used for connecting with a vehicle speed sensor to be detected are fixed on the output shaft of the driving motor; a holding frame capable of clamping the vehicle speed sensor is arranged on the stander; the periphery of the rotating disk is evenly provided with a plurality of teeth; a standard sensor capable of sensing the rotation of the teeth to output pulse signals is arranged on the stander; and the MCU can compare the signals of the vehicle speed sensor to be detected with the signals of the standard sensor to judge whether the performance of the vehicle speed sensor to be detected is good or not. With the detection device, the vehicle speed sensor can be detected conveniently, the MCU can adjust the rotation speed of the driving motor to fit for the working requirements of the vehicle speed sensor under different vehicle speeds and automatically judge whether the performance of the vehicle speed sensor to be detected is good or not, and the detection efficiency is high.
Description
technical field [0001] The invention relates to a detection device, in particular to a vehicle speed sensor performance detection device. Background technique [0002] As an important parameter in the driving process of the vehicle, the vehicle speed sensor connected to the transmission shaft of the vehicle is a real-time data representation of the actual speed of the vehicle. The quality of the vehicle speed sensor is directly related to the driving quality of the car, and a high-quality and reliable vehicle speed sensor is an indispensable and important part of the car. There are two types of vehicle speed sensors: magnetoelectric vehicle speed sensor and Hall-type vehicle speed sensor. In order to ensure the driving safety of the vehicle, the performance parameters and durability parameters of the vehicle speed sensor need to be tested accordingly before the final assembly of the vehicle. At present, the performance detection of the vehicle speed sensor is mainly done m...
Claims
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IPC IPC(8): G01P21/02
Inventor 王伟曹徐建危坤才
Owner 珠海市圣丰机动车辆检测设备有限公司