A method for realizing multi-serial device connection and monitoring

Abstract

The invention discloses a method for realizing multi-serial port device connection and monitoring. The method comprises setting special topological positions of a main CPU and external serial port sending-receiving signals in a network, setting a resistor in a special signal path to ensure level equalization when switching signals, to prevent mutual interference of annular signals formed by big delta connection. A CPU is provided to communicate with any functional component, and through external serial ports (connected with a computer), data sent and received by the CPU is monitored, and a monitoring function can be switched off. The external serial port communicates with any functional component or the CPU, to realize functions of independent debugging or program download. The method prevents a problem that a conventional method uses an electronic switch box internal jumper cap, and effectively solves inconvenience of design and maintenance, and gets rid of manual error caused by opening a cover and cutting off a power supply required by connecting the jumper cap. The method effectively reduces design manufacturing cost, and improves equipment operation reliability.

Description

technical field [0001] The invention relates to a method for realizing device connection and monitoring, in particular to a method for realizing multi-serial device connection and monitoring, and belongs to the technical fields of industrial control, military industry, instrumentation, and consumer electronics applications. Background technique [0002] In electronic products, we often encounter the problem of connecting a main control CPU and multiple functional modules through serial ports. At the same time, we also hope to monitor their communication status through an external computer, and communicate with any functional component and main control CPU if necessary. Direct communication, etc., to achieve independent debugging and program upgrades, etc., the connection and switching of these signals are usually more complicated, and it is difficult to realize it completely through the circuit method. The common method is to use an electronic switch and a number of internal...

AI Technical Summary

Problems solved by technology

[0002] In electronic products, we often encounter the problem of connecting a main control CPU and multiple functional modules through serial ports. At the same time, we also hope to monitor their communication status through an external computer, and communicate with any functional component and main control CPU if necessary. Direct communication, etc., to achieve independent debugging and program upgrades, etc. The connection and switching of these signals are usually more complicated, and it is difficult to realize them completely through the circuit method

The common method is to use electronic switches and a number of internal jumper caps, which will bring great inconvenience to the design and maintenance. When manually connecting the jumper caps, it is usually necessary to open the cover and disconnect the power supply, which is easy to make mistakes. Therefore, a method for realizing multi-serial device connection and monitoring is proposed for the above-mentioned problems

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