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Parameter tester for interference rejection circuit of vehicle power supply

A technology for automotive power supply and interference suppression, which is used in electronic circuit testing and other directions to achieve the effects of high testing efficiency, accurate testing and convenient use.

Inactive Publication Date: 2011-07-06
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to propose a universal and easy-to-test parameter testing device for the interference suppression circuit of the automobile power supply in view of the complexity and variability of the interference of the automobile power supply

Method used

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  • Parameter tester for interference rejection circuit of vehicle power supply
  • Parameter tester for interference rejection circuit of vehicle power supply
  • Parameter tester for interference rejection circuit of vehicle power supply

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032] The automobile power supply interference suppression circuit referred to in the present invention refers to a circuit similar to that described in the background art, used to remove the interference signal of the automobile power supply, and prevent the controller from being damaged by the interference of the automobile power supply or output distortion. In general, the automotive power supply interference suppression circuit includes resistors and capacitors for filtering, etc. The "parameters" of the automotive power supply interference suppression circuit are mainly the specific circuit structure parameters in the power supply interference suppression circuit, such as the resistance value and capacitance value , The directional breakdown voltage of the Ze...

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Abstract

The invention provides a parameter tester for an interference rejection circuit of a vehicle power supply, and belongs to the technical field of vehicle electronics. The tester provided by the invention comprises a first circuit module, a second circuit module, a two-end switch and a four-end switch, wherein the first circuit module is used for filtering a high-frequency signal, eliminating oscillation and absorbing high-pressure energy; the second circuit module is used for controlling the frequency character and filtering interference waveform; and the working mode can be selected by matching of the two-end switch and the four-end switch, so that the parameter tester is particularly suitable for interfering with various vehicle power supplies. Therefore, the tester has the advantages ofstrong universality, use convenience, high testing efficiency and accurate testing.

Description

technical field [0001] The invention belongs to the technical field of automotive electronics, and in particular relates to a parameter testing device for an automotive power supply interference suppression circuit. Background technique [0002] With the development of automotive electronics technology, the related circuit system of automotive electronics is becoming more and more complex, and the reliability of its operation is becoming more and more important. Among them, the control of many key components in the car is realized by the controller (ECU) in the form of a chip, for example, the controller of its generator, the controller of the engine, the controller of the instrument and so on. The controller is usually placed in a complex automotive electronic system and receives power signal input from the automotive power system. The controller in the form of a chip usually has a low operating voltage and has relatively high requirements on the signal of the car power su...

Claims

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Application Information

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IPC IPC(8): G01R31/28
Inventor 邓恒侯利程周炜
Owner SAIC MOTOR