CN101882936A - EAST-ICRF (Experimental Advanced Superconducting Tokamak-Ion Cyclotron Resonant Heating) transmitter impedance matching and regulating system - Google Patents
EAST-ICRF (Experimental Advanced Superconducting Tokamak-Ion Cyclotron Resonant Heating) transmitter impedance matching and regulating system Download PDFInfo
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- CN101882936A CN101882936A CN2009101167326A CN200910116732A CN101882936A CN 101882936 A CN101882936 A CN 101882936A CN 2009101167326 A CN2009101167326 A CN 2009101167326A CN 200910116732 A CN200910116732 A CN 200910116732A CN 101882936 A CN101882936 A CN 101882936A
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- ion cyclotron
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- superconducting tokamak
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Abstract
The invention discloses a transmitter impedance matching and regulating system which mainly solves the problems of complicated regulating operation, poor regulating precision, no flexibility and long consumed time when the transmitter impedance is not matched. The regulating system comprises a directional coupler, double branch sections, a coaxial transmission line, a probe, a data acquisition card, an upper computer, a programmable logic controller (PLC), a stepper motor and a detecting circuit, wherein the upper computer realizes an algorithm of a control process by adopting the LabVIEW engineering control software, and obtains a good man-machine interaction interface.
Description
Technical field
The present invention relates to transmitting set, be specially adapted to the high-power RF signal transmitter
Background technology
Impedance matching is a problem the most widely in the frequency microwave field.The general matching network that adopts only is applicable to fixing operating frequency, perhaps has only very little relative bandwidth.In a frequency band, can both finish coupling, and can carry out the real time altering of state, just need a whole set of real-time control system.The way of in the past regulating coupling is regulated by empirical value mainly by to the prior demarcation of equipment, length consuming time, and be not easy to harmonize, the long effect of reflected signal may burn out signal source.
Summary of the invention
The objective of the invention is wastes time and energy the problem that precision is not enough, and a kind of new control mode that provides at above radio frequency sending set matching network adjusting.
For realizing purpose of the present invention, take following measure technically:
This Experimental Advanced Superconducting Tokamak-Ion Cyclotron comprises directional coupler, two details, coaxial transmission line, probe, data collecting card, host computer, programmable logic controller (PLC) (PLC), stepping motor, detecting circuit.It is characterized in that: be provided with detecting circuit between probe and data collecting card, its operating frequency is between 20MHz-110MMz.The radiofrequency signal that is coupled out by probe connects the input of detecting circuit, signal through detecting circuit output is a direct current signal that becomes some relations with the input radio frequency signal magnitude, read in computer and carry out the high-speed data processing through data collecting card, by computer output order is passed to programmable logic controller (PLC), drive stepping motor is adjusted the state of matching network, makes the signal of radio frequency source can pass to the antenna emission completely.
The present invention compared with prior art beneficial effect is as follows: the present invention to the adjustment of transmitter different with existing adjustment mode be through real-time monitoring of computer, real-time regulated.Collection to data-signal can enter computer at any time, the used time of data processing can ignore, the maximum characteristics of programmable logic controller (PLC) (PLC) are that antijamming capability is strong, can the above time stable reception host computer information and carry out its order immediately.Whole process need not manual operation, can make corresponding adjustment immediately at the size of load impedance.
Description of drawings
The whole block diagram of Fig. 1 the present invention
Fig. 2 detecting circuit schematic diagram
The connection layout of Fig. 3 programmable logic controller (PLC) (PLC) and controllor for step-by-step motor
Embodiment
Referring to accompanying drawing 1.The impedance matching network regulating system comprises: directional coupler, two details, coaxial transmission line, probe, data collecting card, host computer, programmable logic controller (PLC) (PLC), stepping motor, detecting circuit.Operating frequency 20MHz-110MMz.Said probe will use network analyzer to measure to the degree of coupling of radiofrequency signal; Consider the accuracy of measurement, the relation of output of detecting circuit direct current and radio frequency input is through the test data sheet data, and its relation can utilize the mode of match to provide.Like this, in the whole adjustment process, for host computer, the input of data has had the relation of determining with output, and whole adjustment process can utilize the program in the host computer to carry out smoothly.
With reference to Fig. 2 detecting circuit schematic diagram.By high frequency capacitance (C1, C2), detector diode (D1, D2) and resistance (R1 R2) constitutes.Its radiofrequency signal is coupled to circuit through high frequency capacitance C1, carries out detection through D1 and D2, and resistance R 1 and R2 press for late-class circuit provides galvanic current.Its output can be carried out obtaining accurately after data scaling and the match with the relation of input.
Connection layout with reference to Fig. 3 programmable logic controller (PLC) and controllor for step-by-step motor.The pulse of controllor for step-by-step motor input is to be 50% pulse control by the duty ratio that the delivery outlet Q0.0 of programmable logic controller (PLC) (PLC) and Q0.1 send, and the quantity of pulse has determined the number of turns of stepping motor rotation; Direction control is by delivery outlet Q0.2 and Q0.3 decision, and high level is represented just to change, the corresponding counter-rotating of low level.Like this, programmable logic controller (PLC) (PLC) just can be made corresponding adjustment to matching network according to the control command drive stepping motor of host computer.
The course of work of this Experimental Advanced Superconducting Tokamak-Ion Cyclotron:
After the radiofrequency signal of signal source enters matching network, at first obtain the value of reflection coefficient by the image data of directional coupler.If do not reach re-set target, host computer obtains the output voltage of detecting circuit by data collecting card, and is obtained the distribution situation of radiofrequency signal in the coaxial transmission line by the functional relation of match.So, the state information that data high-speed is handled the matching network that obtains is sent to programmable logic controller (PLC) (PLC) through serial communication, programmable logic controller (PLC) (PLC) is this order of soluble execution, reduces the RF-reflective signal as much as possible behind the stepping motor adjustment state.Like this, the power output of signal source is with regard to the antenna that is transferred to as much as possible, and discharged by antenna.
Claims (6)
1.EAST-ICRF transmitter Experimental Advanced Superconducting Tokamak-Ion Cyclotron, it comprises impedance matching network (being used for radio signal transmission) and software control two parts, it is characterized in that: be provided with detecting circuit between probe and data collecting card, its operating frequency is between 20MHz-110MMz.The radiofrequency signal that is coupled out by probe connects the input of detecting circuit, signal through detecting circuit output is a direct current signal that becomes some relations with the input radio frequency signal magnitude, read in computer and carry out the high-speed data processing through data collecting card, by computer output order is passed to programmable logic controller (PLC), drive stepping motor is adjusted the state of matching network, makes the signal of radio frequency source can pass to the antenna emission completely.
2. Experimental Advanced Superconducting Tokamak-Ion Cyclotron according to claim 1 is characterized in that: directional coupler can be coupled out incident wave in the coaxial transmission line and reflected wave, and obtains reflection coefficient thus, and this reflection coefficient is a key of judging whether network mates.
3. Experimental Advanced Superconducting Tokamak-Ion Cyclotron according to claim 1 is characterized in that: said detecting circuit by high frequency capacitance (C1, C2), detector diode (D1, D2) and resistance (R1 R2) constitutes.Its radiofrequency signal is coupled to circuit through high frequency capacitance C1, carries out detection through D1 and D2, and resistance R 1 and R2 press for late-class circuit provides galvanic current.
4. Experimental Advanced Superconducting Tokamak-Ion Cyclotron according to claim 1 is characterized in that: the direct voltage that is provided by detecting circuit is received by host computer through data collecting card, obtains the state information of impedance matching network by special algorithm.
5. Experimental Advanced Superconducting Tokamak-Ion Cyclotron according to claim 1, it is characterized in that: host computer by the serial communication mode with status information transmission to programmable logic controller (PLC) (PLC), this programmable logic controller (PLC) is carried out the host computer order by decoding explanation, and drive stepping motor is carried out corresponding motion.
6. Experimental Advanced Superconducting Tokamak-Ion Cyclotron according to claim 1 is characterized in that: the operating frequency of this Experimental Advanced Superconducting Tokamak-Ion Cyclotron is 20MHz-110MMz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101167326A CN101882936A (en) | 2009-05-08 | 2009-05-08 | EAST-ICRF (Experimental Advanced Superconducting Tokamak-Ion Cyclotron Resonant Heating) transmitter impedance matching and regulating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101167326A CN101882936A (en) | 2009-05-08 | 2009-05-08 | EAST-ICRF (Experimental Advanced Superconducting Tokamak-Ion Cyclotron Resonant Heating) transmitter impedance matching and regulating system |
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| CN101882936A true CN101882936A (en) | 2010-11-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122969A (en) * | 2010-12-30 | 2011-07-13 | 意法·爱立信半导体（北京）有限公司 | Mobile terminal and method for improving antenna matching performance of multiband mobile terminal |
| CN102324947A (en) * | 2011-05-20 | 2012-01-18 | 苏州索乐机电设备有限公司 | Digital real-time radio frequency automatic matcher and matching method thereof |
| CN103042386A (en) * | 2012-12-31 | 2013-04-17 | 安徽工业大学 | Rotary bearing mounting system on basis of labview and method for controlling rotary bearing mounting system |
| CN103623881A (en) * | 2013-11-30 | 2014-03-12 | 无锡信大气象传感网科技有限公司 | FFT ferrite matching stub device |
| CN106841813A (en) * | 2017-03-08 | 2017-06-13 | 深圳市尧元科技有限公司 | Measure the device and method of magnetic resonance type wireless charging system transmitting terminal input impedance |
| CN107896412A (en) * | 2017-09-27 | 2018-04-10 | 中国科学院合肥物质科学研究院 | A kind of high frequency magnetic probe diagnostic system for being used to measure radio frequency wave property |
-
2009
- 2009-05-08 CN CN2009101167326A patent/CN101882936A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122969A (en) * | 2010-12-30 | 2011-07-13 | 意法·爱立信半导体（北京）有限公司 | Mobile terminal and method for improving antenna matching performance of multiband mobile terminal |
| CN102324947A (en) * | 2011-05-20 | 2012-01-18 | 苏州索乐机电设备有限公司 | Digital real-time radio frequency automatic matcher and matching method thereof |
| CN103042386A (en) * | 2012-12-31 | 2013-04-17 | 安徽工业大学 | Rotary bearing mounting system on basis of labview and method for controlling rotary bearing mounting system |
| CN103042386B (en) * | 2012-12-31 | 2015-04-01 | 安徽工业大学 | Rotary bearing mounting system on basis of labview and method for controlling rotary bearing mounting system |
| CN103623881A (en) * | 2013-11-30 | 2014-03-12 | 无锡信大气象传感网科技有限公司 | FFT ferrite matching stub device |
| CN103623881B (en) * | 2013-11-30 | 2015-12-09 | 无锡信大气象传感网科技有限公司 | An a kind of FFT ferrite allotment regulating device |
| CN106841813A (en) * | 2017-03-08 | 2017-06-13 | 深圳市尧元科技有限公司 | Measure the device and method of magnetic resonance type wireless charging system transmitting terminal input impedance |
| CN107896412A (en) * | 2017-09-27 | 2018-04-10 | 中国科学院合肥物质科学研究院 | A kind of high frequency magnetic probe diagnostic system for being used to measure radio frequency wave property |
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Application publication date: 20101110 |