A dual-network dual-configuration PLC redundancy switching method and system for a hydropower monitoring system
A monitoring system and redundant switching technology, applied in general control systems, control/regulation systems, electrical program control, etc., can solve the problems of inability to judge the PLC active and standby status and communication status, and inability to make switching judgments. The effect of seamless redundancy in network communication
Active Publication Date: 2018-09-25
XJ ELECTRIC +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The present invention provides a dual-network and dual-configuration PLC redundancy switching method and system for a hydropower monitoring system, aiming to solve the problem that the monitoring system in the hydropower monitoring system does not communicate directly with the PLC and cannot determine the primary and backup status and communication of the PLC. state, and it is impossible to make a switching judgment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0013] Embodiment of dual-network dual-configuration PLC redundant switching system for hydropower monitoring system
[0014] The dual-network dual-configuration PLC redundant switching system of the hydropower monitoring system in this embodiment includes a background monitoring system, a communication management machine MCU1, a communication management machine MCU2, a local controller PLC1 and a local controller PLC2; each of the communication management machines Both are connected to A network and B network, and each local controller is also connected to A network and B network to form a dual-network redundant communication mode; the communication management machine MCU1 and the communication management machine MCU2 are also connected through a network independent of the A network. The independent channel of network B and network...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a water and electricity monitoring system dual-network dual-configuration PLC redundancy switching method and system. The system includes a background monitoring system, two communication management machines (MCU) and two local controllers (PLC), each MCU and each PLC are both connected into an A network and a B network; the two MCUs are connected with each other through an independent channel independent from the A network and the B network; when dual-network communication between one of the MCUs and the PLCs is interrupted, the MCU sends a dual-network communication state between the MCU and the PLCs to the other MCU through the independent channel and judges whether dual-network communication between the other MCU and the PLCs is interrupted and the MCU is a main network MCU; and if other dual-network communication between the other MCU and the PLCs is not interrupted, and the MCU is a main network MCU, the background monitoring system is notified to switch a main network and a standby network. According to the method and system of the invention, cooperation of a switching in and switching out mutual notification mechanism and a software logic judgment mechanism of the MCUs, the PLCs and the monitoring system is realized, so that network communication seamless redundancy switching in water and electricity monitoring can be realized.
Description
technical field [0001] The invention relates to a network switching scheme of a hydropower monitoring system, in particular to a switching mechanism of a network communication management machine of a hydropower monitoring system, and in particular to a dual-network dual-configuration PLC redundant switching method and system for a hydropower monitoring system. Background technique [0002] In large and medium-sized hydropower monitoring systems, communication equipment and PLCs need dual-network and dual-set configurations. In the case that PLCs cannot be directly connected to the monitoring system, a communication management machine MCU needs to be configured separately, and each set of PLCs is connected to the monitoring system through its own MCU. Each MCU has dual-network redundant communication with PLC, and single-network access monitoring system. The main and standby state monitoring system for PLC cannot be directly obtained, nor can it make a switching judgment. It ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/052G05B2219/14014
Inventor 冯利虎刘志文陈海龙陈干杰张红跃徐玉洁刘桂莲魏小锋古领先牛志雷安友彬黄绍辉赵艳茹徐立明杜延辉沈燕华肖志刚石伟路振宇吕灵芝
Owner XJ ELECTRIC