Method for constructing multi-channel matrix switch parallel measurement cable network
A matrix switch, multi-channel technology, applied in the direction of fault location, etc., can solve the problem of limiting test speed and so on
Active Publication Date: 2013-06-05
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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It is a single point measurement, not a parallel measurement, which limits the test speed
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[0014] For a 20-port 31-core cable network test system, the wiring adapter leads to 19 31-core interfaces, and the digital parallel IO uses 19 parallel measurement channels. The system is composed of control computer, test software, VXI bus test case, various VXI bus function modules, test signal adapter and test interface. The physical layer directly drives the combination of system hardware, test instruments, and switches; the abstraction layer defines the interface relationship between the data in the data layer and the devices in the physical layer; the data layer is the data of the system's physical devices summarized by the abstraction layer, including Database, switch database and test adapter database, the application layer is the user operation layer.
[0015] The computer controls the parallel digital IO and matrix switch modules. Pre-input the multi-channel matrix switch sequence, correct on-off relationship and judgment conditions before measurement. The test pro...
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The invention discloses a method for constructing a multi-channel matrix switch parallel measurement cable network. The method comprises the following steps of: 1, inputting a multi-channel matrix switch sequence, a correct on / off relation and a judgment condition into a computer; 2, connecting a parallel digital IO, a matrix switch module and a tested object through a wire connection adapter; 3,controlling the digital IO and the matrix switch module in a video extension interface module chassis by calling driving software encapsulated in a virtual instrument software architecture base; 4, grounding one end of the test end of the tested object, and measuring test points of other ports in parallel by using the digital IO by controlling the matrix switch; 5, repeating the third step and executing multi-channel parallel measurement; and 6, judging a measurement result and maintaining a cable network. The system can quickly locate an on / off fault of the tested complicated cable network; by adoption of parallel digital IO input, the test speed can be increased; human-machine interaction is finished by controlling a procedure; therefore, a user can obtain full information of on and offof the cable network and locate the fault.
Description
technical field [0001] The method belongs to the field of general testing, especially a rapid testing system for complex cable networks. Background technique [0002] During the continuity test of the cable network, because some complex cable networks have multiple ports, most of the cores of each port are not in one-to-one correspondence. To completely measure the conduction of each two port cores, there are many test points and the workload is very huge. A multi-terminal complex cable network can be tested hundreds of thousands of times, so many test points cannot be measured manually. "General Cable Detection Platform for Missile Ground Cable Network" introduces a device that applies power to the cores of the relevant ports one by one and judges whether it is on or off or insulated. It is a single-point measurement, not a parallel measurement, which limits the test speed. Contents of the invention [0003] The purpose of the present invention is to propose a multi-ch...
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IPC IPC(8): G01R31/08
Inventor 厚泽王超徐沛虎崔文涛王宏伟
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH