VB environment-based multi-serial-port equipment communication method for electrical logging system

Abstract

The invention discloses a VB environment-based multi-serial port equipment communication method for an electrical logging system, which comprises the following steps: 1, packaging a functional function, and adding a message queue; 2, packaging and analyzing a message analysis function; 3, using a state machine function for distributing and processing tasks of external requests; 4, circularly calling a state machine function by an external timer; 5, the state machine executing and refreshing the current task progress; and 6, circularly searching the effective message frame, and putting the effective message into an analysis function for analysis. The invention relates to the technical field of serial port equipment communication. According to the VB environment-based multi-serial-port equipment communication method for the electrical logging system, the problems of low communication efficiency, very passive fault information processing, easy frame loss and data loss in case of encountering data which can be actively uploaded, and easy execution of a disordered current task in case of slow response to terminal device during communication of multiple pieces of equipment in the existing VB environment are solved.

Description

technical field [0001] The invention relates to the technical field of serial port device communication, in particular to a communication method for multiple serial port devices of an electrical measurement system based on a VB environment. Background technique [0002] The VB programming environment basically uses a single-threaded mode. The serial port communication method needs to be sent once, delayed for a period of time, and then read the serial port data, and then analyze the serial port data. During the delay waiting process, the main program cannot handle other tasks and can only wait together. If multiple devices communicate, the efficiency of delay waiting for each communication process will be very low, and the processing of fault information is very passive. If When encountering data that will be actively uploaded, there will be frame-to-frame parsing problems. If it is not handled well, it is easy to lose frames and data. When the response of the terminal devic...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a communication method based on multiple serial devices in the electrical measurement system under the VB environment, which solves the problem of low communication efficiency and passive failure information processing when multiple devices communicate under the existing VB environment. , if you encounter data that will be actively sent, it will be easy to lose frames and data. When the response of the terminal device is slow, it is easy to execute the problem of confusing the current task.

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