Magnetron state detection method and device, controller and magnetron state detection circuit and system

Abstract

The invention relates to the field of microwave equipment and discloses a magnetron state detection method and device, a controller and a magnetron state detection circuit and system. The magnetron state detection method comprises the steps of firstly obtaining anode temperature of a magnetron and a temperature compensation value; secondly, calculating a preset temperature threshold according to the temperature compensation value; and finally determining the state of the magnetron according to the anode temperature of the magnetron and the preset temperature threshold. Therefore, the preset temperature threshold in the method can be changed along with the temperature compensation value, and the preset temperature thresholds in different environments are different, so that setting of the preset temperature threshold is more accurate, thereby accurately identifying the state of the magnetron; and when the magnetron is in a no-load condition, output power of a variable-frequency power supply is reduced and stop measures are further taken, thereby avoiding an overtemperature damage to the magnetron, avoiding the condition that the other devices cannot normally work due to overtemperature and avoiding power waste at the same time.

Description

technical field [0001] The invention relates to the field of microwave equipment, in particular to a magnetron state detection method, device, controller, circuit and system. Background technique [0002] With the development of technology, microwave equipment is more and more widely used. The microwave equipment can drive the magnetron to generate microwaves, so that the microwaves can affect the load of the microwave equipment. When the microwave equipment is in the no-load state, a large amount of microwaves are reflected back to the magnetron, causing the magnetron to heat up violently, which in turn causes the temperature of the anode of the magnetron and the temperature of the filament to be too high. The anode temperature of the magnetron has a significant impact on the life of the magnetron If the anode temperature is too high, the magnetron is prone to problems such as magnetic cracking, air leakage, and filament aging, which will cause the magnetron to fail. Con...

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Problems solved by technology

When the microwave equipment is in the no-load state, a large amount of microwaves are reflected back to the magnetron, causing the magnetron to heat up violently, which in turn causes the temperature of the anode of the magnetron and the temperature of the filament to be too high. The anode temperature of the magnetron has a significant impact on the life of the magnetron It plays a very important role. If the anode temperature is too high, the magnetron is prone to problems such as magnetic cracking, air leakage, and filament aging, which will cause the magnetron to fail.

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