Method and system for detecting single-plate on position

A detection method and single-board technology, which is applied to the detection of faulty computer hardware, measuring electronics, measuring devices, etc., can solve the problems of inability to use single-board on-site detection, large number of backplane buses, etc., and achieve reliable on-site detection , the effect of reducing the number

Active Publication Date: 2007-02-14
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] 1. As many service boards as there are in the system need to design as many in-position detection signal lines. The presence detection signal lines are connected to the main control board and the backplane slots of each service board through the backplane. If there are many

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  • Method and system for detecting single-plate on position
  • Method and system for detecting single-plate on position

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[0046] JTAG (Joint Test Action Group, Joint Test Action Group) formulated the boundary scan test specification, and became the IEEE standard IEEE1149.1-90 in 1990, referred to as the JTAG standard. The JTAG standard greatly promoted the development and wide application of boundary scan technology . Nowadays, the application of boundary scan technology is becoming more and more common, and the main applications include board interconnection testing, FLASH loading, logic programming, etc. The application level also develops from the chip level to the circuit board level and then to the system level, and various application characteristics are continuously tapped. The following single board in-position detection method of the present invention is to use boundary scan technology to realize single board in-position detection.

[0047] Such as figure 2 As shown, the single board presence detection method of the present invention includes the steps:

[0048] Step 201: The network manage...

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Abstract

An on-position detecting method of single board includes sending command to test bus controller TBC by network management for driving said controller TBC to detect whether single board in system is on position or not, sending broadcast message by said TBC controller through bus of back board boundary scan test system, receiving said broadcast message by addressable scan port ASP then returning back response message and judging whether single board is on position or not by said scan port ASP according to content of said response message. The system for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to the technical field of veneer detection, in particular to a veneer in-position detection method and system. Background technique [0002] In the control system, the interconnection between boards generally adopts a plug-in structure, which is usually composed of a backplane and multiple boards. The system often needs to know which slots have single boards inserted and which slots do not have single boards. board, which is the so-called single board presence detection, or single board roll call. According to the implementation method in the prior art, such as figure 1 As shown, an presence detection signal line is connected from the main control board to the service board, and whether the board is in position is detected according to the level of the signal line. [0003] And the shortcoming of prior art is: [0004] 1. As many service boards as there are in the system need to design as many in-position detection signal lines...

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Application Information

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IPC IPC(8): G01R31/00G01R31/02G06F11/22
Inventor 李颖悟
Owner HUAWEI TECH CO LTD
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