Batch detection device for bus interface boards

A technology of batch detection and bus interface, which is applied in the field of measurement and control, can solve the problems of long time for signal stability detection and low detection efficiency, and achieve automatic analysis and output, high degree of automation, stability and reliability Effect

Pending Publication Date: 2021-11-16
HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing interface boards are tested in a serial manner, and since it takes a long time to complete the stability detection of all signals of a single board, when the interface boards are mass-produced, the detection efficiency is low

Method used

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  • Batch detection device for bus interface boards
  • Batch detection device for bus interface boards

Examples

Experimental program
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Embodiment 1

[0042]In this embodiment, eight interface boards are used to describe the device, and the type of the interface board is an ISA bus interface board. In this example, the signals to be detected by the ISA bus interface board are mainly constant current source signals and frequency signals. The required test instruments are a multimeter (current file) and a frequency meter.

[0043] The patent example of the present invention needs to detect 8 identical interface boards at the same time, and the software and hardware states of the 8 interface boards are exactly the same, that is, the board IDs are the same, so it is necessary to switch the CPLD on the bottom board to the 8 interface boards through signal switching The address is decoded to realize the redistribution of the address space, and it is mapped in the address space of the motherboard. Realize the one-to-one correspondence between the main board and each interface board signal, so as to realize the control and interpre...

Embodiment 2

[0070] In this embodiment, the simultaneous testing of board 1, board 2, and board 3 is taken as an example to illustrate the decoding of the CPLD.

[0071] There are address bus and data bus connected between the three boards and the main board, among which the data bus (d0-d7, 8 bits in total) is exactly the same, and each interface board is directly connected to the main board. The address bus is divided into a common bus and a special bus. The common address bus is directly connected, and the special address bus is connected after being decoded by the CPLD. The address bus of the main board has a total of 12 bits, a0-a11, the address bus of interface board 1 is a0-a11; the address bus of interface board 2 is a0-a4, a5_2, a6-a11; the address bus of interface board 3 is a0-a5 , a6_3, a7-a11; addresses a5_2 and a6_3 are the unique address lines of interface board 1 and interface board 2 respectively.

[0072] The technical status of the three interface boards is completely c...

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Abstract

The invention relates to the technical field of measurement and control, in particular to a batch detection device for bus interface boards. The device comprises a power source board, a main board, a signal switching base board, a plurality of interface boards and a tester; an electric power signal output end of the power source board is connected to each board card, the signal switching base board comprises a connector, a CPLD decoding circuit and a signal switching relay, a data bus of each interface board is connected to the main board through the connector, the address bus of each interface board is connected to the main board through the CPLD decoding circuit, and the control signal output end of the CPLD decoding circuit is connected to the tester through the signal switching relay. The batch detection device can detect bus interface boards in multiple sets of ground testing equipment at the same time, improve testing efficiency, automatically interpret testing results, can achieve unattended operation, is high in reliability and stable in performance, and has good impact resistance, high temperature resistance, low temperature resistance and other severe environments.

Description

technical field [0001] The invention relates to the technical field of measurement and control, in particular to a batch detection device for bus interface boards. Background technique [0002] The ground test equipment contains a variety of interface boards, and the interface boards must be judged as qualified products after various tests and delivered. The signals to be detected by the interface board include frequency, current, voltage, pulse and other signals. [0003] The existing interface boards are tested in a serial manner, and since it takes a long time to complete the stability detection of all signals of a single board, when the interface boards are mass-produced, the detection efficiency is low. [0004] In order to improve the detection efficiency, a device is needed, which can realize parallel testing of each interface board. Contents of the invention [0005] The object of the present invention is to provide a batch detection device for bus interface boar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28G01R1/18G01R1/04
CPCG01R31/282G01R31/2834G01R1/18G01R1/0416
Inventor 查坤王啸候嫚利蔡鹏袁英浩唐浩吴云
Owner HUBEI SANJIANG AEROSPACE WANFENG TECH DEV
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