A Distributed Control System of Multiple Magnetron Power Supply Based on Power Carrier

Abstract

The invention discloses a power line carrier based distributed control system for magnetron power sources. The system includes an upper computer and a magnetron management module, wherein the upper computer is used for monitoring working states of the magnetron power sources and performing remote control; and the magnetron management module is in communication with the upper computer and is used for supervisory control and for collecting temperature, humidity, anode current, cathode current, filament voltage, filament current and electromagnet current of the magnetrons. According to the invention, low-voltage broadband power line carrier technology is utilized and the working frequency range is 1-40 MHz, so that low-frequency interference is avoided effectively and reliable data transmission with a transmission range of 200 to 300 m can be realized. The system can meet power control demands of magnetrons in a single microwave device. No separate wiring is needed and the system has advantages of being easy in execution and adjustment, comparatively small in operation maintenance load, good in data security and large in bandwidth.

Description

technical field [0001] The invention belongs to the technical field of industrial power supply control, in particular to a multi-magnetron power supply distributed control system based on power carrier. Background technique [0002] The functions of microwave drying, microwave sterilization, microwave extraction and microwave heating can be realized by using microwave. Industrial microwave equipment has the advantages of energy saving, environmental protection and high efficiency, and has been widely used in heating and drying, sterilization, microwave extraction and other industries. Compared with traditional household microwave ovens, industrial microwave equipment usually has multiple microwave generating units, so it faces the problem of multiple microwave magnetron power management. In traditional industrial microwave equipment, the management of the magnetron power supply adopts the PLC method, and the management method adopts the frequent switching management method ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-magnetron power supply distributed control system based on power carrier, which aims to solve the problems of expensive equipment, complicated wiring, and frequent switching management methods that affect the life and reliability of switching power supplies in the traditional PLC management mode. Both will have adverse effects. The human interface of the PLC system is too simple to realize complex process planning and information management of the production process.

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