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Multi-magnetron microwave power intelligent control method adapted to time-varying load

A technology of microwave power and intelligent control, which is applied in the direction of microwave heating, can solve the problems of difficult and complex control parameters, and achieve the effect of improving heating efficiency and reducing energy loss

Inactive Publication Date: 2012-07-11
SICHUAN UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, for complex chemical reaction processes, or microwave heating targets with nonlinear responses, the extraction of control parameters is very difficult and complicated

Method used

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  • Multi-magnetron microwave power intelligent control method adapted to time-varying load
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  • Multi-magnetron microwave power intelligent control method adapted to time-varying load

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Experimental program
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Effect test

Embodiment

[0034] Such as figure 2 As shown, taking 4 magnetron microwave sources as an example, in the microwave power intelligent control system with 4 magnetrons, the specific programmable single-chip program flow is realized according to the following steps:

[0035] 1. When the internal timer of the single-chip microcomputer is initialized, the external interrupt is turned off, the four ports p1.0, p1.2, p1.4, and p1.6 of the single-chip microcomputer 1 output high level, all four relays 2 are closed, and the four magnetic Control all the work of 3, and the working heating time is 3 minutes;

[0036] 2. Determine whether the internal timer of the microcontroller reaches 3 minutes, and execute the next step when it reaches 3 minutes;

[0037] 3. When the four magnetrons are all closed, the MCU calculates and stores the corresponding magnetrons in the control system according to the feedback signals of the four ports p2.0, p2.2, p2.4, and p2.6. The ratio of the controlled microwave...

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Abstract

The invention relates to a multi-magnetron microwave power intelligent control method adapted to a time-varying load, and belongs to the field of microwave heating. The intelligent control method is implemented by a multi-magnetron microwave power intelligent control system consisting of a heating reaction cavity, a programmable singlechip, a microwave power detection device, n relays, n directional couplers, n coaxial waveguide switches and n magnetrons. The singlechip controls the switching statuses of the n magnetrons through a feedback signal of the microwave power detection device according to information about microwave absorption and reflection conditions in each stage of target microwave heating in the control system, so that the output power of a multi-magnetron microwave source is automatically adjusted to make the magnetrons cooperatively work, and the aims of prolonging the service life of the microwave source, improving microwave heating efficiency, saving energy and protecting the environment are fulfilled.

Description

technical field [0001] The invention relates to a multi-magnetron microwave source power control method, in particular to an intelligent control method for multi-magnetron microwave power adapting to time-varying loads, and belongs to the field of microwave heating. Background technique [0002] Compared with traditional electricity and oil heating methods, microwave heating has the advantages of high efficiency, fast heating, and uniform heating. However, in the process of microwave heating, as the heating progresses, the temperature change of the heated target will cause its parameters such as dielectric constant and electrical conductivity to change. The changes in these parameters can be equivalent to the changes in the load of the microwave source. On the other hand, some heating targets themselves will produce changes in dielectric constant and other characteristics due to chemical reactions and other processes, and the change in dielectric constant characteristics can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B6/68
Inventor 黄卡玛刘长军赵翔闫丽萍杨阳杨晓庆郭庆功陈星陈倩
Owner SICHUAN UNIV
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