Method and system for detecting single-plate on position

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...

AI Technical Summary

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 slots in the backplane , it is necessary to add more signal lines for in-position detection in the backplane bus, so the number of backplane buses is large;

[0005] 2. If a hardware failure occurs on the presence detection signal line, it cannot be used for board presence detection

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