Self-tuning all-solid-state microwave source MPT, self-tuning device and control method

A control method and microwave source technology, applied in the field of chemical measurement, can solve the problems of unmatched system impedance, cumbersome operation, unfavorable instrument protection, etc., and achieve the effect of improving operability and service life, reducing experience requirements, and being beneficial to protection.

Active Publication Date: 2015-03-25
ZHEJIANG SUPCON RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the change of working gas, the change of analyte composition and concentration, the change of flow rate, the change of power, etc., or the system impedance cannot match, all make the reflected power of MPT in the working state in a non-optimal state, and the energy cannot be obtained. Effective utilization, so it is necessary to adjust the position of the reflective end face of the torch tube in order to make it work in an optimal state
[0003] The traditional MPT torch is realized by manual

Method used

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  • Self-tuning all-solid-state microwave source MPT, self-tuning device and control method
  • Self-tuning all-solid-state microwave source MPT, self-tuning device and control method
  • Self-tuning all-solid-state microwave source MPT, self-tuning device and control method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1:

[0034] like figure 1 An all-solid-state microwave source MPT self-tuning device is shown, wherein the microwave plasma torch (4) includes a coupling antenna (5) and an adjusting member (6), characterized in that the device includes an all-solid-state microwave source (1) , control module (2), transmission device (3);

[0035] The all-solid-state microwave source is connected to the coupling antenna (5), the adjustment member (6) is connected to the transmission device (3), and the transmission device (3) is connected to the control module (2), the control module (2) is connected to the all-solid-state microwave source;

[0036] The all-solid-state microwave source generates a microwave electromagnetic field to provide microwave energy for the microwave plasma torch (4), and at the same time obtains feedback information of the microwave plasma torch (4) from the coupling antenna (5), and the all-solid-state microwave source stores the feedback information ...

Example Embodiment

[0045] Example 2:

[0046] Based on the all-solid-state microwave source MPT self-tuning device described in Embodiment 1, this embodiment provides a image 3 The shown all-solid-state microwave source MPT self-tuning control method. The all-solid-state microwave source MPT self-tuning control method described in this embodiment is a heuristic method.

[0047] The all-solid-state microwave source MPT self-tuning control method is used in the above-mentioned self-tunable all-solid-state microwave source MPT. The self-tuning control method in the control module (2) includes the following steps:

[0048] S1: Set the threshold of reflected power coefficient;

[0049] S2: read the real-time reflected power as the first reflected power value, and obtain the first reflected power coefficient from the real-time reflected power value;

[0050] S3: determine whether the first reflected power coefficient is greater than the threshold, if yes, go to step S4, if not, go back to step S2...

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Abstract

The invention provides a self-tuning all-solid-state microwave source MPT, a self-tuning device and a control method. A microwave plasma torch (4) comprises a coupled antenna (5) and a regulating part (6). The self-tuning device comprises a microwave source, a control module (2) and a transmission device (3). The microwave source is connected with the coupled antenna (5). The regulating part (6) is connected with the transmission device (3). The transmission device (3) is connected with the control module (2). The control module (2) is connected with the microwave source. The microwave source generates a microwave electromagnetic field to provide microwave energy for the microwave plasma torch (4) and acquires feedback information of the microwave plasma torch (4) from the coupled antenna (5) at the same time; the microwave source extracts a reflection power value from the feedback information and feeds back the reflection power value to the control module (2); the control module sends a control signal to the transmission device (3) according to the reflection power value and a preset parameter relation curve, and the transmission device (3) drives the regulating part (6) to move.

Description

technical field [0001] The invention relates to the technical field of chemical measurement, in particular to a self-tunable all-solid-state microwave source MPT, a self-tuning device and a control method. Background technique [0002] The microwave plasma torch (MPT) was invented by Professor Jin Qinhan in 1985, and the corresponding patent application number is CN 94205428.8. At present, the microwave plasma torch (MPT) has been commercially used in sequential scanning spectrometers, full-spectrum direct-reading spectrometers, etc. However, during the use of these MPT spectrometers, once the parameters of the system change, it is necessary to adjust the reflective end face of the torch. For example, the change of working gas, the change of analyte composition and concentration, the change of flow rate, the change of power, etc., or the system impedance cannot match, all make the reflected power of MPT in the working state in a non-optimal state, and the energy cannot be o...

Claims

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Application Information

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IPC IPC(8): G05D3/12G01J3/02
Inventor 金伟于丙文朱旦金钦汉叶莹徐星王熙星
Owner ZHEJIANG SUPCON RES
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