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Self-verification automatic test system, device and method for on-resistance

A technology of on-resistance and self-resistance, applied in measuring devices, measuring resistance/reactance/impedance, measuring electrical variables, etc., can solve problems such as low efficiency, save production costs, avoid test errors and manually change channels, improve The effect of testing efficiency

Inactive Publication Date: 2013-03-20
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides an automatic on-resistance test system, device and method with self-verification to solve the problem of inefficiency caused by manually verifying the resistance of tooling in the prior art

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Embodiment Construction

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0024] In order to solve the problem of inefficiency caused by manually verifying the resistance of tooling in the prior art, the present invention provides an automatic on-resistance test with self-verification for PXI bus switches or cables. The test system, device and method, when the validity period of the tooling verification expires or when the non-verified program-controlled multiplexer and cable are used as the tooling, the ...

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Abstract

The invention discloses a self-verification automatic test system, a device and a method for on-resistance. The system comprises program-controlled multi-channel selectors, a connecting cable, a self-verification component, a digital multimeter and a control module, wherein the program-controlled multi-channel selectors are used for controlling opening or closing of channels by turning on or off a switch; the connecting cable comprises an A end, a B end and a C end; the self-verification component is used for verifying the on-resistance of a tooling; the digital multimeter is used for sending a measured value of the on-resistance of the tooling and a measured value of the on-resistance of tested equipment to the control module; the digital multimeter is set in a four-wire resistance measurement mode by the control module; the control module controls the program-controlled multi-channel selectors to change the channels, starts testing the on-resistance of the tooling and receives the measured value of the on-resistance of the tooling sent by the digital multimeter; the control module controls the program-controlled multi-channel selectors to change the channels, starts testing the on-resistance of the tested equipment, and receives the measured value of the on-resistance of the tested equipment sent by the digital multimeter; and finally a true value of the on-resistance of the tested equipment is obtained.

Description

technical field [0001] The invention relates to the field of bus modular instrument testing, in particular to an automatic testing system, device and method for conduction resistance with self-verification. Background technique [0002] In the prior art, the test devices used for products that need to conduct on-resistance testing mainly include: 1. When the number of channels of the object under test is small, directly touch the probe pen of the on-resistance testing instrument to the object under test. 2. When the object under test has many channels, use cables to lead out and disperse the signals of each channel one by one, and manually select the test channel (cable end) to connect the guide. 3. When the object under test has many channels, use a program-controlled multiplexer, cable and automatic test software to test the on-resistance. Since the program-controlled multiplexer and cables have internal resistance (conduction resistance), it is necessary to test their in...

Claims

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Application Information

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IPC IPC(8): G01R27/02G01R35/00
Inventor 张欣张斌王红弟
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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