Modbus-based Information Fusion Technology And Gate Automatic Control System

With the continuous development of information technology, the gate as a core component of water system, to achieve its figures, intelligence, and automation has become very important. Advanced computer network technology, automatic control technology and communication technology to establish gate control system for centralized control and management, Enhance the accuracy measurement and control of the gate's open degree load, better protection system, to ensure the safe operation of the gate is the gate control system of the main contents and objective.Information fusion Modbus key is to encode the value encoders, pressure sensors, the pressure signal, temperature sensor temperature signal integration through the Modbus communication protocol to the system. Currently the gate control system and the general opening of the gate load of information gathering rather scattered and relatively small samples, low accuracy, reliability is low, the gate can only be read by PLC upper-bit, lower-bit values and systems overload of information, can not directly read the real-time gate opening and the real system load information. The system is in such request, the careful study internal related gate control system based on the use of information fusion Modbus to a variety of useful information through gate control with Modbus integration, and then analysis, calculation and the gates intelligent control.Firstly, the information on the Modbus fusion was studied. Introduced the concept of information fusion technology, analyzed the gate control system using Modbus Information Fusion reasons discussed system fusion in which information should be specific, in the basis of this analysis how integrate these information in the system.Secondly, the overall framework of the system was designed and study. Mainly for hardware and software to design hardware design: The main STC12C5616AD designed a microcontroller as the core information converter, collected from the pressure sensor signal, temperature signal, the encoding value of the encoder, the pressure signal A / D converter, and into the PLC Modbus protocol Power meter Modbus network directly related to the value read into PLC.Upper monitor system and lower control system are also used Modbus communication, and use the other PLC programming interface, the upper control system to read the gate opening through the PLC, system load, direct load, temperature and other important real-time signal parameter; Software Design:Using the C programming language on the microcontroller, to draw process flow diagram, in KEIL software debugger, then the program downloaded to the hardware debugging, the system's full functionality.Finally, the system analyzes the data collected through the PC's power control PC software, collect data at regular intervals, and then import the data into Excel form, obtained by analyzing the support pressure, cable pull and balance rope pulley shaft pressure with height diagram changes, the pressure sensor should be installed so as to arrive here in which the real load information can be obtained.After the actual debug lab, the results show that: the converter on the gate open system, system load, direct load, temperature and other important parameters of the acquisition and accurate real-time, and the system of the gate opening to millimeter accuracy. Set gate opening system measurement, pressure measurement, temperature measurement and power measurement and integration, and the system is simple, reliable, wide measuring range, high precision and response speed to meet the requirements of PLC, anti-interference ability, and can easily access systems work, with good prospects.