Matrix automatic impedance tester and testing method

An automatic impedance and tester technology, applied in the direction of measuring resistance/reactance/impedance, instruments, measuring devices, etc., can solve the problem of time-consuming and laborious manual inspection, and achieve the effect of improving test efficiency, easy to use, and easy to build.

Inactive Publication Date: 2016-03-23
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the time-consuming and labor-intensive technical problem that the existing impedance test requires manual ins...

Method used

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  • Matrix automatic impedance tester and testing method
  • Matrix automatic impedance tester and testing method
  • Matrix automatic impedance tester and testing method

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Embodiment Construction

[0026] see figure 2 , The matrix automatic impedance tester provided by the present invention mainly includes a test box, a digital ohmmeter and a main control computer.

[0027] The interface conversion cable is used to connect the tested interface of the product and the program-controlled array test box, so as to realize the conversion between the product-specific interface and the general-purpose interface of the program-controlled array test box. The test of the tested contact is transferred to the test box, and each contact in the interface X corresponds to each measuring point in the test box.

[0028] The main control computer is equipped with a measurement control module and two digital interface cards to work together to complete the required measurement work. The two digital interface cards respectively control the positive and negative input ports of the digital ohmmeter. Each output port of the interface card is connected to the relay drive terminal on the corres...

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Abstract

The invention belongs to the field of electrical tests, and relates to an automatic testing device and a testing method for product electronic impedance characteristics. The invention provides a matrix automatic impedance tester, which comprises a test box, a digital ohmmeter and a main control computer, and is characterized in that: n test contacts are arranged in the text box, each test contact is connected with a positive end and a negative end of the digital ohmmeter to form a testing access; each testing access is provided with a programmed switch; the main control computer is internally provided with two digital interface cards used for controlling positive and negative input ports of the digital ohmmeter; and output ends of the digital interface cards are connected with driving ends of the programmed switches. By adopting the matrix automatic impedance tester and the testing method, the testing personnel do not need to perform manual walk through and record test data manually as before, and can hand over the subsequent measurement to a program for automatic completion by inputting a test netlist and connecting tested equipment, thus the testing efficiency, testing security and testing accuracy are significantly increased.

Description

technical field [0001] The invention belongs to the field of electrical testing, and relates to an automatic testing device and method for the impedance characteristics of product electronics, in particular to an automatic measurement of various impedance characteristics between contacts in the same interface, so as to perform automatic and continuous verification of product impedance characteristics. method. Background technique [0002] When measuring various functional products with external electrical interfaces, in order to ensure the consistency between the use of the internal contacts of the electronic interface of the product and the design requirements, and the safety of power supply and distribution, the state certainty of the product after participating in various environmental tests is guaranteed. The impedance characteristics of the product need to be tested. By comparing the impedance characteristics of the product in different states, it can reflect whether t...

Claims

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Application Information

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IPC IPC(8): G01R27/02
CPCG01R27/02
Inventor 昌明赵建科曹昆薛勋周艳聂申
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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