CN109451620A - Microwave power source, control method, control device and controller - Google Patents
Microwave power source, control method, control device and controller Download PDFInfo
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- CN109451620A CN109451620A CN201811424258.9A CN201811424258A CN109451620A CN 109451620 A CN109451620 A CN 109451620A CN 201811424258 A CN201811424258 A CN 201811424258A CN 109451620 A CN109451620 A CN 109451620A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/686—Circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators
Abstract
This application involves a kind of microwave power source, control method, control device and controllers.Microwave power source therein includes each signal generator of controller and each signal processing branch that connects one to one；Each signal generator connects controller；Controller transmits corresponding frequency configuration signal to each signal generator respectively；Signal generator is according to frequency configuration signal, to the microwave signal of signal processing branch output corresponding frequencies.It is connected one to one based on each signal generator and each signal processing branch, microwave signal of each signal generator to each signal processing branch output different frequency to connect one to one can be achieved, and each signal generator connects controller, it can be controlled by the controller respectively, so that the frequency for the microwave signal that each signal generator is exported to signal processing branch can arbitrary disposition, and then make the working frequency of each signal processing branch can arbitrary disposition, to realize multiple branch circuit multi-frequency any combination, keep working frequency points diversified, improves the alternative of working frequency.
Description
Technical field
This application involves technical field of microwave application, more particularly to a kind of microwave power source, control method, control device
And controller.
Background technique
With the development of microwave applications technology, occur issuing the technology of microwave using magnetron, conventional magnetron pipe due to
That there are the thermals efficiency is low, thermal uniformity is poor, power is uncontrollable, frequency is non-adjustable, frequency spectrum is spuious abundant, the service life it is short etc. it is many it is insufficient by
Gradually exit the stage instead solid state microwave sources of history, solid state microwave sources very good solution magnetron many lack
It falls into, also improves the flexibility of microwave heating system.Solid state microwave in solid state microwave sources is driven using microwave power source at present
Power amplifier.
During realization, inventor has found that at least there are the following problems: the work of traditional microwave power source in traditional technology
Make that frequency point is single, the alternative difference of working frequency.
Summary of the invention
Based on this, it is necessary to which in view of the above technical problems, working frequency points can be increased and improve working frequency by providing one kind
Optionally microwave power source, control method, control device and controller.
To achieve the goals above, on the one hand, the embodiment of the invention provides a kind of microwave power source, including controller with
And each signal generator for each signal processing branch that connects one to one；Each signal generator connects controller；
Controller transmits corresponding frequency configuration signal to each signal generator respectively；
Signal generator is according to frequency configuration signal, to the microwave signal of signal processing branch output corresponding frequencies.
Signal generator is phase locked source in one of the embodiments,.
It in one of the embodiments, further include crystal oscillator；Crystal oscillator connects each phase locked source.
Phase locked source includes data terminal and chip select terminal in one of the embodiments,；
Phase locked source is enabled when receiving the chip selection signal of controller transmission by chip select terminal for receiving frequency configuration letter
Number data terminal.
Signal processing branch includes pulse-modulator, electrically controlled attenuator and voltage controlled phase shifter in one of the embodiments,；
Pulse-modulator, electrically controlled attenuator and voltage controlled phase shifter be connected in series in signal processing branch signal input part and
Between the signal output end of signal processing branch；
Each pulse-modulator, each electrically controlled attenuator and each voltage controlled phase shifter are separately connected controller.
Signal processing branch further includes prime amplifier in one of the embodiments,；
Pulse-modulator, electrically controlled attenuator, voltage controlled phase shifter and prime amplifier are connected in series in signal input part and signal
Between output end.
Prime amplifier connection signal output end in one of the embodiments,.
In one of the embodiments, electrically controlled attenuator include first resistor, second resistance, 3rd resistor, first capacitor,
Second capacitor, third capacitor, first diode and the second diode；
First resistor one end connects the anode of first diode, and is grounded by first capacitor, and the other end is for connecting electricity
Source；
The cathode of first diode is separately connected the cathode of one end of third capacitor, the second diode, and passes through third electricity
Resistance ground connection；
The anode of second diode is separately connected one end of one end of the second capacitor, second resistance；
The other end of second resistance connects controller；
The other end of second capacitor and the other end of third capacitor are that electrically controlled attenuator is connected to signal processing branch road
Both ends.
Pulse-modulator includes control switch and RF switch in one of the embodiments,；
The both ends of RF switch are the both ends that pulse-modulator is connected to signal processing branch road；
Controller passes through control switch to RF switch transmission pulse modulated signal；RF switch is according to pulse-modulated signal
Connection or cut-off signal handle branch.
On the other hand, the embodiment of the invention also provides a kind of control methods of microwave power source, comprising:
Corresponding frequency configuration signal is transmitted to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
A kind of control device of microwave power source, comprising:
Frequency configuration module, for transmitting corresponding frequency configuration signal to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
A kind of the step of controller, which is used to execute the control method of above-mentioned microwave power source.
A kind of computer readable storage medium is stored thereon with computer program, when computer program is executed by processor
The step of realizing the control method of above-mentioned microwave power source.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
It is connected one to one based on each signal generator and each signal processing branch, it can be achieved that each signal generator is to one by one
The microwave signal for each signal processing branch output different frequency being correspondingly connected with, and each signal generator connects controller, can divide
Be not controlled by the controller so that the frequency for the microwave signal that each signal generator is exported to signal processing branch can arbitrary disposition,
And then make the working frequency of each signal processing branch can arbitrary disposition to realize multiple branch circuit multi-frequency any combination make work
Make frequency point diversification, improves the alternative of working frequency.
Detailed description of the invention
By being more particularly described for preferred embodiment of the present application shown in the drawings, the above and other mesh of the application
, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, and does not carve
Meaning draws attached drawing by actual size equal proportion scaling, it is preferred that emphasis is shows the purport of the application.
Fig. 1 is the first applied environment figure of microwave power source in one embodiment；
Fig. 2 is the second applied environment figure of microwave power source in one embodiment；
Fig. 3 is the first structure block diagram of microwave power source in one embodiment；
Fig. 4 is the second structural block diagram of microwave power source in one embodiment；
Fig. 5 is the structural block diagram of phase locked source in one embodiment, crystal oscillator, controller and this three's connection relationship；
Fig. 6 is the circuit diagram of electrically controlled attenuator in one embodiment；
Fig. 7 is the structural block diagram of pulse-modulator in one embodiment；
Fig. 8 is the schematic flow schematic diagram of the control method of microwave power source in one embodiment；
Fig. 9 is the structural block diagram of the control device of microwave power source in one embodiment；
Figure 10 is the internal structure chart of controller in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.It is term as used herein " one end ", " another
One end ", " connection ", " series connection ", " both ends " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
Realize that the microwave source for meeting industrial application or daily use is the premise for generating industry and daily required microwave, i.e.,
Microwave is generated as needed.In the conventional technology, the microwave generated usually using magnetron.Microwave source packet based on magnetron
Include the parts such as power supply, magnetron, control circuit and resonant cavity.Power supply is generated to magnetron output voltage, magnetron concussion
Microwave exports microwave using Wave guide system.
In the conventional technology, it is limited to the working principle of magnetron, magnetron must could normal work under high drive
Make (such as the operating voltage of certain magnetrons is up to 4000 volts).This allows for needing to construct height in the microwave source based on magnetron
Voltage source.So as to cause microwave source, structure is complicated, and volume is larger and there are Electrical Safety hidden danger.Solid state microwave sources very good solution
Many defects of magnetron, also improve the flexibility of microwave heating system.Solid-state is driven using microwave power source at present
Microwave solid-state power amplifier in microwave source.
In microwave heating system, the uniformity and the thermal efficiency of single power source heating are all than relatively limited, because single-point is presented
Source is easy to cause intracavitary heated material heating uneven in intracavitary field distribution and its unevenly, and then the thermal efficiency is low.I.e.
Will pass through multiple branch circuit output microwave signal realizes multiple spot feed, since working frequency points are single and the alternative difference of working frequency,
Also it is easy to cause the problem that heating is uneven and the thermal efficiency is low.
The application is increased working frequency points, is improved working frequency by the way of multiple branch circuit multi-frequency any combination
Alternative, while the defect of electric field in microwave heating system being unevenly distributed can also be made up indirectly, to effectively improve hot equal
Even property and the thermal efficiency.
Microwave power source provided by the present application can be applied in application environment as shown in Figure 1 or 2.Wherein, as schemed
Shown in 1, microwave power source 102, each solid-state microwave amplifier 104 and each antenna 106 successively connect one to one, microwave power source
The microwave signal of 102 outputs is launched after the amplification of solid-state microwave amplifier 104 by antenna 106；
As shown in Fig. 2, microwave power source 102 and each solid-state microwave amplifier 104 connect one to one；Microwave power source
The microwave signal of 102 outputs is combined by combiner 108, then pass through antenna first after the amplification of solid-state microwave amplifier 104
106 launch；
Two kinds of application environments in Fig. 1 and Fig. 2 may be incorporated for realizing microwave heating, microwave abstracting, excitation plasma
Etc. functions.
In one embodiment, as shown in figure 3, providing a kind of microwave power source, Fig. 1 is applied to the microwave power source
Or it is illustrated for the application environment in Fig. 2, including controller 302 and each signal processing branch 306 that connects one to one
Each signal generator 304；Each signal generator 304 connects controller 302；
Controller 302 transmits corresponding frequency configuration signal to each signal generator 304 respectively；
Signal generator 304 exports the microwave letter of corresponding frequencies to signal processing branch 306 according to frequency configuration signal
Number.
Wherein, controller 302 can be, but not limited to be various single-chip microcontrollers, Digital Signal Processing (DSP, Digital
Signal Processing) device, FPGA (Field-Programmable Gate Array, field programmable gate array) and
The processors such as CPLD (Complex Programmable Logic Device, Complex Programmable Logic Devices), further,
Controller 302 is microprocessor；Specifically, (Digital to analog converter, digital-to-analogue turn the DAC of controller 302
Change) conversion accuracy can be at 8 or more, and it can be configured with the SPI for the equal peripheral equipments of connection signal generator 304
(Serial Peripheral Interface, Serial Peripheral Interface (SPI)) interface or simulation SPI interface
Signal generator 304 can be microwave signal generator 304, and the frequency of the microwave signal that can be exported can be down to
Tri- 433MHz (Mega Hertz, megahertz), 915MHz, 2450MHz microwave heating frequency ranges are covered less.
The quantity of signal generator 304 can be four, correspondingly, the quantity of signal processing branch 306 may be 4
It is a.
Specifically, signal processing branch 306 microwave signal can be modulated, amplitude modulation, the processing such as phase modulation.
In a specific embodiment, signal generator 304 is phase locked source (microlock signal source), exports CW
(Continuous Wave, persistent wave) signal is as microwave signal.
It should be noted that the solid state microwave in the signal output end connection figure 1 and Fig. 2 of signal processing branch 306 amplifies
Device；Microwave signal can drive the solid-state microwave amplifier in Fig. 1 and Fig. 2 after signal processing branch 306.
The course of work of above-mentioned microwave power source are as follows:
Controller 302 according to actual needs, transmits corresponding frequency configuration signal to each signal generator 304 respectively；
When being applied to microwave heating system, above-mentioned actual needs can be true according to the design requirement of microwave heating system
Fixed, above-mentioned design requirement may include inner space size, size, antenna opening position and the type for heating food of heating chamber；
Above-mentioned actual needs can also be determined according to the reflection coefficient of different foods, because microwave energy only can be (main by polar molecule
If hydrone) it absorbs, and the distribution of the water content and hydrone of every kind of food is all different, and then food is as microwave energy
The electrical characteristics showed when the load of amount are different, i.e., the reflection coefficient of different foods be it is distinguishing, so as to
Classified by the reflection coefficient of detection load (furnace chamber for having put food) to food, determines the type of food, and then really
Determine actual demand；
It should be noted that optimal working frequency points can change with heating under load reflection coefficient, such as
Best effort frequency point is 2450MHz before starting, and being heated to best effort frequency point when half is 2460MHz, and arrives the end of heating
When best effort frequency point be 2470MHz.
Each signal generator 304 exports corresponding frequencies to signal processing branch 306 according to the frequency configuration signal received
Microwave signal；
Microwave signal can be used to driving solid-state microwave amplifier after signal processing branch 306, specifically by taking Fig. 2 as an example,
It can be used for that the solid-state microwave amplifier of 4 250W (Watt, watt) is driven to be combined, output power can reach 1kW after combining
(kilo Watt, kilowtt) can be used in industrial microwave heating large equipment.
In above-mentioned microwave power source, connected one to one based on each signal generator 304 and each signal processing branch 306,
Microwave signal of each signal generator 304 to each signal processing branch 306 output different frequency to connect one to one can be achieved,
And each signal generator 304 connects controller 302, can be controlled respectively by controller 302, so that each signal generator 304 is to letter
The frequency for the microwave signal that number processing branch 306 exports can arbitrary disposition, and then make the working frequency of each signal processing branch 306
Can arbitrary disposition keep working frequency points diversified to realize multiple branch circuit multi-frequency any combination, improve working frequency can
Selectivity.
Specifically, for the microwave heating system of the above-mentioned microwave power source of application, the realization of multiple branch circuit multi-frequency can
Improve the heating flexibility of microwave heating system, convenient for promoting the thermal efficiency and thermal uniformity, play it is environmentally protective, energy-saving and emission-reduction
Effect.
In one embodiment, as shown in figure 4, providing a kind of microwave power source, Fig. 1 is applied to the microwave power source
It is illustrated with for the application environment in Fig. 2, comprising: controller 302 and each signal processing branch that connects one to one (by
Pulse-modulator 402 in Fig. 4, electrically controlled attenuator 404, voltage controlled phase shifter 406 and prime amplifier 408 are constituted) each signal occur
Device 304；Each signal generator 304 connects controller 302；
Signal processing branch includes pulse-modulator 402, electrically controlled attenuator 404, voltage controlled phase shifter 406 and prime amplifier
408；
Pulse-modulator 402, electrically controlled attenuator 404, voltage controlled phase shifter 406 and prime amplifier 408 are connected in series in signal
It handles between the signal input part of branch and the signal output end of signal processing branch, pulse-modulator 402, electrically controlled attenuator
404, the order of connection between voltage controlled phase shifter 406 and prime amplifier 408 is not construed as limiting；
Each pulse-modulator 402, each electrically controlled attenuator 404 and each voltage controlled phase shifter 406 are separately connected controller 302；
Controller 302 transmits corresponding frequency configuration signal to each signal generator 304 respectively；
Signal generator 304 is according to frequency configuration signal, to the microwave signal of signal processing branch output corresponding frequencies.
The quantity of signal generator 304 can be four, correspondingly, the quantity of signal processing branch may be 4.
It should be noted that voltage controlled phase shifter 406 can adjust the phase of microwave signal in each signal processing branch, reinforce
The mutual isolation of each signal processing branch, avoids interfering with each other, when being especially applied to microwave heating system, microwave heating system
Magnetic field is relatively abundanter in the heating chamber of system, and mutual interference is than more serious, and the microwave signal of out of phase also ensures
Thermal uniformity.
In a wherein specific embodiment, signal generator 304 is phase locked source.
In a wherein specific embodiment, as shown in figure 5, further including crystal oscillator 502；Crystal oscillator 502
Connect each phase locked source, the microwave signal of each phase locked source output can be made synchronous, avoid because fixed phase is uncertain cause it is each
The relative phase of signal processing branch adjusts difficult, it is ensured that microwave power source will not be collapsed in application.
Wherein, crystal oscillator 502 can be TCXO (Temperature Compensate X'tal (crystal)
Oscillator, temperature compensation type crystal oscillator).
In a wherein specific embodiment, as shown in figure 5, phase locked source includes data terminal and chip select terminal (in Fig. 5
CS1, CS2, CS3 and CS4)；
Phase locked source enables to match for receiving frequency when receiving the chip selection signal of the transmission of controller 302 by chip select terminal
The data terminal of confidence number.
Wherein, controller 302 connects chip select terminal, and connects data terminal (the two-way arrow that SPI is indicated in Fig. 5 by SPI interface
At head and at the four-headed arrow that is indicated of spi bus, illustrate that the SPI interface of controller connects each locking phase by spi bus
Source).
Specifically, controller 302 can be using high level as chip selection signal, when controller 302 will configure one of them
When the frequency of the microwave signal of phase locked source output, high level first is transmitted to the chip select terminal of the phase locked source, then to the phase locked source
Data terminal transmission frequency configures signal, and corresponding deposit in phase locked source is written in the frequency information in frequency configuration signal by phase locked source
Device, it should be noted that controller 302 is when transmitting high level to the chip select terminal of the phase locked source, the piece choosing of Xiang Qiyu phase locked source
End transmission low level.
In a wherein specific embodiment, 408 connection signal output end of prime amplifier, that is to say, that in signal processing
In branch, prime amplifier 408 is arranged after pulse-modulator 402, electrically controlled attenuator 404 and voltage controlled phase shifter 406.
In a wherein specific embodiment, as shown in fig. 6, electrically controlled attenuator 404 includes first resistor R1, the second electricity
Hinder R2,3rd resistor R3, first capacitor C1, the second capacitor C2, third capacitor C3, first diode D1 and the second diode D2；
The one end first resistor R1 connects the anode of first diode D1, and is grounded GND by first capacitor C1, and the other end is used
In connection power supply VCC；
The cathode of first diode D1 is separately connected the cathode of one end of third capacitor C3, the second diode D2, and passes through
3rd resistor R3 is grounded GND；
The anode of second diode D2 is separately connected one end of one end of the second capacitor C2, second resistance R2；
The other end of second resistance R2 connects controller 302；
The other end of second capacitor C2 and the other end of third capacitor C3 are that electrically controlled attenuator 404 is connected to signal processing branch
The both ends of road.
The characteristic of the electric piezo-resistive of first diode D1 and the second diode D2 is utilized in above-mentioned electrically controlled attenuator 404, makes
It obtains first diode D1, the second diode D2 and 3rd resistor R3 constitutes electric pressure regulation control attenuation network.The decaying of Rational choice electricity tune
The parameter of circuit element, the parameter of power supply and controller 302 connect the control parameter of the interface of second resistance R2 in device 404,
The adjustable range of gain may be implemented up to more than 20dB (deciBel, decibel), gain flatness signal frequency 400MHz~
It is 2dB in the range of 3GHz (Giga Hertz, Gigahertz), input return loss S11 is less than -20dB.
It should be further noted that above-mentioned electrically controlled attenuator 404 is connected in fact using a small amount of resistance, capacitor with diode
Existing, structure is simple, at low cost.
In a wherein specific embodiment, as shown in fig. 7, pulse-modulator 402 includes control switch 702 and radio frequency
Switch 704；
The both ends of RF switch 704 are the both ends that pulse-modulator 402 is connected to signal processing branch road；
Controller 302 passes through control switch 702 to 704 transmission pulse modulated signal of RF switch；704 basis of RF switch
Pulse-modulated signal connection or cut-off signal handle branch.
Wherein, pulse-modulated signal is PWM (Pulse Width Modulation, pulsewidth modulation) signal, works as controller
When the pulse-modulated signal duty ratio of 302 controls is 100%, communications signals handle branch namely signal to RF switch 704 always
Processing branch normally exports microwave signal (the CW signal of permanent envelope)；When the pulse-modulated signal duty ratio that controller 302 controls
When being 0%, cut-off signal processing branch namely signal processing branch export RF switch 704 without microwave signal always；Work as control
When the pulse-modulated signal duty ratio that device 302 controls is between 0% to 100%, RF switch 704 is periodically connected to and disconnects
The microwave signal pulse of signal processing branch namely signal processing branch output duty ratio corresponding.It should be further noted that
Change the frequency (inverse of cycle T) of pwm signal, i.e., the frequency of changeable microwave signal pulse.Due to pwm signal frequency and
Duty ratio is adjustable, for the microwave heating system of the above-mentioned microwave power source of application, improves the flexible of microwave heating system
Property, treat different classes of heating object with a certain discrimination convenient for microwave heating system, and pacify to different classes of heating object
Full alarm judgement.
The course of work of above-mentioned microwave power source are as follows:
Controller 302 according to actual needs, first transmits chip selection signal to the chip select terminal of corresponding phase locked source, then to corresponding
The data terminal transmission frequency of phase locked source configures signal；
Phase locked source enables to match for receiving frequency when receiving the chip selection signal of the transmission of controller 302 by chip select terminal
The data terminal of confidence number, frequency configuration signal can be received；
Phase locked source is according to frequency configuration signal, to the microwave signal of signal processing branch output corresponding frequencies；
Microwave signal by pulse-modulator 402, electrically controlled attenuator 404, voltage controlled phase shifter 406 and prime amplifier 408 into
After row pulsewidth modulation, amplitude modulation, phase shift and pre-amplification processing, solid-state microwave amplifier can be driven；
Therefore pulse-modulator 402, electrically controlled attenuator 404 and voltage controlled phase shifter 406 are controlled by the control of controller 302
Device 302 can according to actual needs respectively control pulse-modulator 402, electrically controlled attenuator 404 and voltage controlled phase shifter 406,
And then pulsewidth modulation is carried out respectively to the microwave signal of each signal processing branch road, amplitude modulation and phase shift are handled, export different micro-
Wave signal.
Feature identical with a upper embodiment please refers to the detailed description in upper one embodiment in the present embodiment, here not
It repeats again.
In above-mentioned microwave power source, connected one to one based on each signal generator 304 and each signal processing branch 306,
Microwave signal of each signal generator 304 to each signal processing branch 306 output different frequency to connect one to one can be achieved,
And each signal generator 304 connects controller 302, can be controlled respectively by controller 302, so that each signal generator 304 is to letter
The frequency for the microwave signal that number processing branch 306 exports can arbitrary disposition, and then make the working frequency of each signal processing branch 306
Can arbitrary disposition keep working frequency points diversified to realize multiple branch circuit multi-frequency any combination, improve working frequency can
Selectivity；
The microwave signal of each signal processing branch road can also be adjusted by pulse-modulator 402, electrically controlled attenuator 404 and electricity and be moved
Phase device 406 carries out pulsewidth modulation, amplitude modulation, phase shift processing, further improves flexibility, for the above-mentioned microwave power source of application
For microwave heating system, flexibility is good, the effect of adjusting the duration and degree of heating in the similar Chinese way of cooking may be implemented, while being also convenient for being promoted
The thermal efficiency and thermal uniformity play environmentally protective, the effect of energy-saving and emission-reduction.
In one embodiment, as shown in figure 8, providing a kind of control method of microwave power source, comprising:
Step S802 transmits corresponding frequency configuration signal to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
In a specific example, signal generator is phase locked source.
In a specific example, step S802 includes:
Chip selection signal is transmitted to phase locked source by chip select terminal；Signal is configured to phase locked source transmission frequency by data terminal；
Chip selection signal is used to indicate phase locked source and enables data terminal.
In a specific example, further comprise the steps of:
By control switch to RF switch transmission pulse modulated signal；Pulse-modulated signal is used to indicate RF switch company
On-off ON signal handles branch.
It should be understood that although each step in the flow chart of Fig. 8 is successively shown according to the instruction of arrow, this
A little steps are not that the inevitable sequence according to arrow instruction successively executes.Unless expressly state otherwise herein, these steps
It executes there is no the limitation of stringent sequence, these steps can execute in other order.Moreover, at least part in Fig. 8
Step may include that perhaps these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage, which is also not necessarily, successively to be carried out,
But it can be executed in turn or alternately at least part of the sub-step or stage of other steps or other steps.
In one embodiment, as shown in figure 9, providing a kind of control device of microwave power source, comprising:
Frequency configuration module 902, for transmitting corresponding frequency configuration signal to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
In a specific example, signal generator is phase locked source.
In a specific example, frequency configuration module 902 includes chip selection signal module and frequency configuration signaling module；
Chip selection signal module is used to transmit chip selection signal to phase locked source by chip select terminal；Chip selection signal is used to indicate phase locked source
Enabled data terminal；
Frequency configuration signaling module is used to configure signal to phase locked source transmission frequency by data terminal.
It further include pulse modulation module in a specific example；
Pulse modulation module is used to pass through control switch to RF switch transmission pulse modulated signal；Pulse-modulated signal is used
Branch is handled in the connection of instruction RF switch or cut-off signal.
The specific of control device about microwave power source limits the control that may refer to above for microwave power source
The restriction of method, details are not described herein.Modules in the control device of above-mentioned microwave power source can be fully or partially through
Software, hardware and combinations thereof are realized.Above-mentioned each module can be embedded in the form of hardware or independently of the place in computer equipment
It manages in device, can also be stored in a software form in the memory in computer equipment, in order to which processor calls execution or more
The corresponding operation of modules.
In one embodiment, a kind of controller is provided, which can be terminal, and internal structure chart can be as
Shown in Figure 10.The controller includes the processor connected by system bus, memory, network interface, display screen and input dress
It sets.Wherein, the processor of the controller is for providing calculating and control ability.The memory of the controller includes non-volatile deposits
Storage media, built-in storage.The non-volatile memory medium is stored with operating system and computer program.The built-in storage is non-easy
The operation of operating system and computer program in the property lost storage medium provides environment.The network interface of the controller be used for it is outer
The terminal in portion passes through network connection communication.A kind of control of microwave power source is realized when the computer program is executed by processor
Method.The display screen of the controller can be liquid crystal display or electric ink display screen, and the input unit of the controller can
To be the touch layer covered on display screen, it is also possible to the key being arranged on controller housing, trace ball or Trackpad, it can be with
It is external keyboard, Trackpad or mouse etc..
It will be understood by those skilled in the art that structure shown in Figure 10, only part relevant to application scheme
The block diagram of structure, does not constitute the restriction for the controller being applied thereon to application scheme, and specific controller can wrap
It includes than more or fewer components as shown in the figure, perhaps combines certain components or with different component layouts.
In one embodiment, a kind of controller is provided, the controller is for executing following steps:
Corresponding frequency configuration signal is transmitted to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
In a specific example, signal generator is phase locked source.
In a specific example, wrapped respectively to the step of each signal generator transmission corresponding frequency configuration signal
It includes:
Chip selection signal is transmitted to phase locked source by chip select terminal；Signal is configured to phase locked source transmission frequency by data terminal；
Chip selection signal is used to indicate phase locked source and enables data terminal.
In a specific example, which is also used to execute following steps:
By control switch to RF switch transmission pulse modulated signal；Pulse-modulated signal is used to indicate RF switch company
On-off ON signal handles branch.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
Corresponding frequency configuration signal is transmitted to each signal generator respectively；
Frequency configuration signal is used to indicate signal generator to the microwave signal of signal processing branch output corresponding frequencies.
In a specific example, signal generator is phase locked source.
In a specific example, wrapped respectively to the step of each signal generator transmission corresponding frequency configuration signal
It includes:
Chip selection signal is transmitted to phase locked source by chip select terminal；Signal is configured to phase locked source transmission frequency by data terminal；
Chip selection signal is used to indicate phase locked source and enables data terminal.
In a specific example, also performed the steps of when computer program is executed by processor
By control switch to RF switch transmission pulse modulated signal；Pulse-modulated signal is used to indicate RF switch company
On-off ON signal handles branch.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (13)
1. a kind of microwave power source, which is characterized in that including controller and each of each signal processing branch that connect one to one
Signal generator；Each signal generator connects the controller；
The controller transmits corresponding frequency configuration signal to each signal generator respectively；
For the signal generator according to the frequency configuration signal, Xiang Suoshu signal processing branch exports the microwave letter of corresponding frequencies
Number.
2. microwave power source according to claim 1, which is characterized in that the signal generator is phase locked source.
3. microwave power source according to claim 2, which is characterized in that further include crystal oscillator；The crystal oscillation
Device connects each phase locked source.
4. microwave power source according to claim 2, which is characterized in that the phase locked source includes data terminal and chip select terminal；
The phase locked source is enabled when receiving the chip selection signal of the controller transmission by the chip select terminal for receiving
State the data terminal of frequency configuration signal.
5. microwave power source according to claim 1, which is characterized in that the signal processing branch includes impulse modulation
Device, electrically controlled attenuator and voltage controlled phase shifter；
The pulse-modulator, the electrically controlled attenuator and the voltage controlled phase shifter are connected in series in the signal processing branch
Between signal input part and the signal output end of the signal processing branch；
Each pulse-modulator, each electrically controlled attenuator and each voltage controlled phase shifter are separately connected the controller.
6. microwave power source according to claim 5, which is characterized in that the signal processing branch further includes pre-amplification
Device；
The pulse-modulator, the electrically controlled attenuator, the voltage controlled phase shifter and the prime amplifier are connected in series in described
Between signal input part and the signal output end.
7. microwave power source according to claim 6, which is characterized in that the prime amplifier connects the signal output
End.
8. microwave power source according to claim 5, which is characterized in that the electrically controlled attenuator includes first resistor,
Two resistance, 3rd resistor, first capacitor, the second capacitor, third capacitor, first diode and the second diode；
Described first resistor one end connects the anode of the first diode, and is grounded by the first capacitor, and the other end is used
In connection power supply；
The cathode of the first diode is separately connected the cathode of one end of the third capacitor, second diode, and leads to
Cross the 3rd resistor ground connection；
The anode of second diode is separately connected one end of one end of second capacitor, the second resistance；
The other end of the second resistance connects the controller；
The other end of the other end of second capacitor and the third capacitor is that the electrically controlled attenuator is connected to the signal
Handle the both ends of branch road.
9. microwave power source according to claim 5, which is characterized in that the pulse-modulator includes control switch and penetrates
Frequency switchs；
The both ends of the RF switch are the both ends that the pulse-modulator is connected to signal processing branch road；
The controller is by the control switch to the RF switch transmission pulse modulated signal；The RF switch according to
The pulse-modulated signal connection disconnects the signal processing branch.
10. a kind of control method of microwave power source characterized by comprising
Corresponding frequency configuration signal is transmitted to each signal generator respectively；
Frequency configuration signal is used to indicate the signal generator to the microwave signal of signal processing branch output corresponding frequencies.
11. a kind of control device of microwave power source characterized by comprising
Frequency configuration module, for transmitting corresponding frequency configuration signal to each signal generator respectively；
Frequency configuration signal is used to indicate the signal generator to the microwave signal of signal processing branch output corresponding frequencies.
12. a kind of controller, which is characterized in that the controller requires the step of control method described in 10 for perform claim
Suddenly.
13. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of control method described in claim 10 is realized when being executed by processor.
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| CN201811424258.9A CN109451620A (en) | 2018-11-27 | 2018-11-27 | Microwave power source, control method, control device and controller |
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| CN201811424258.9A CN109451620A (en) | 2018-11-27 | 2018-11-27 | Microwave power source, control method, control device and controller |
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| CN111918435A (en) * | 2019-05-09 | 2020-11-10 | 青岛海尔智能技术研发有限公司 | Microwave heating device and microwave heater with same |
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| CN110225611A (en) * | 2019-06-03 | 2019-09-10 | 广东美的厨房电器制造有限公司 | Microwave heating equipment and system |
| CN114245504A (en) * | 2020-09-09 | 2022-03-25 | 广东美的厨房电器制造有限公司 | Semiconductor power source and microwave heating device |
| CN114390740A (en) * | 2020-10-16 | 2022-04-22 | 广东美的厨房电器制造有限公司 | Calibration method, calibration system and microwave cooking equipment |
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