CN106561004A - Wireless communication method and device - Google Patents
Wireless communication method and device Download PDFInfo
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- CN106561004A CN106561004A CN201610429431.9A CN201610429431A CN106561004A CN 106561004 A CN106561004 A CN 106561004A CN 201610429431 A CN201610429431 A CN 201610429431A CN 106561004 A CN106561004 A CN 106561004A
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- 238000004891 communication Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000000630 rising effect Effects 0.000 claims description 41
- 238000012545 processing Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 12
- 238000004088 simulation Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 12
- 230000005672 electromagnetic field Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000003491 array Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000011664 signaling Effects 0.000 description 4
- 238000012937 correction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000009123 feedback regulation Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- H02J5/005—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention discloses a wireless communication method, and the method comprises the steps: respectively obtaining to-be-transmitted analog signal information and digital signal information; modulating the to-be-transmitted analog signal information and digital signal information in a preset carrier when the to-be-transmitted analog signal information and digital signal information are obtained, so as to obtain to-be-transmitted signals; and transmitting the to-be-transmitted signals. The invention also discloses a wireless communication device. During the high-speed and real-time transmission of analog signals, the method achieves the transmission of some low-speed digital signals, and is greater in resistance to external and internal interference.
Description
Technical field
The present invention relates to wireless communication technique field, more particularly to a kind of wireless communication method and device.
Background technology
Peter out with fossil energy and increasingly sharpen with environmental pollution, the mankind are seeking more green clear
The life style of clean alternative energy source and energy-conserving and environment-protective.To alleviate dependence journey of the orthodox car to fossil energy
Degree and reduction exhaust emissions amount, electric automobile is a kind of preferable solution.Electric automobile turns electric energy
Driving force is turned to, the characteristics of with zero-emission, no pollution, the dependence to fossil energy can be substantially reduced
Degree and reduction exhaust emissions amount.Electric automobile will be increasingly becoming the important side of motor vehicles future development
To at present many national governments are all being supported and Popularization And Development electric automobile energetically.
At present charging electric vehicle mainly uses wired charging and wireless charging two ways.It is wired to fill
Although electric efficiency is higher, charging process is dumb, needs to plug charging cable repeatedly, there is slip
Wear and tear, wire is aging and contacts the potential safety hazards such as electric spark.In addition in place installation, charging station
Build similar with conventional gasoline station, by place restriction is built, construction cost is very big.
Disadvantages mentioned above can be overcome by wireless charging, be kept completely separate using a former secondary, without electrically connecting
The transformer for connecing, realizes that electric energy enters through air between former secondary using the mutual magnetic coupling of former secondary
Row transmission.In wireless charging system for electric automobile, vehicle-mounted side does not have the communication chain of physical connection with capital construction side
Road, can only realize that information is exchanged by way of wireless telecommunications, and in wireless charging system for electric automobile,
Charging process can produce larger electromagnetic field, can interfere with wireless telecommunication system, possible direct pressing fall with
Interrupt wireless telecommunications, cause the hidden danger and failure of wireless telecommunication system.
The content of the invention
Present invention is primarily targeted at providing a kind of wireless communication method and device, it is intended to solve electronic vapour
When vehicle radio charging process is communicated wirelessly, to external world and inside the weaker technology of interference vulnerability to jamming
Problem.
For achieving the above object, the present invention provides a kind of wireless communication method, it is characterised in that the nothing
The line means of communication include：
Analog signal information to be passed and digital signal information are obtained respectively；
When the analog signal information to be passed and digital signal information is got, will be described to be passed
Analog signal information and digital signal information be modulated in a default carrier wave to obtain signal to be transmitted；
Launch the signal to be transmitted.
Alternatively, it is described that the analog signal information to be passed and digital signal information are modulated at into a load
The step of ripple, includes：
The analog signal information to be passed is modulated in the first base-band information of the carrier wave, and will
The digital signal information is modulated at the second base-band information of the carrier wave, wherein, the first base band letter
Cease the rising edge or trailing edge letter that dutycycle and second base-band information for the carrier wave are the carrier wave
Breath, or, first base-band information is the rising edge or trailing edge information and described second of the carrier wave
Base-band information is the dutycycle of the carrier wave.
Alternatively, the wireless communication method also includes：
Receive the mixed signal through modulation treatment that transmitting terminal is launched；
The signal to receiving is demodulated filtering, isolates data signal and analog signal；
The data signal and analog signal are transmitted to data processing centre.
Alternatively, the described pair of signal for receiving is demodulated filtering, isolates data signal and mould
The step of intending signal includes：
The mixed signal to receiving is demodulated, and is believed with the first base band for obtaining the mixed signal
Breath and the second base-band information, first base-band information is the dutycycle of the carrier wave and second base band
Information is the rising edge of the carrier wave or trailing edge information, or, first base-band information is the load
The rising edge or trailing edge information and second base-band information of ripple are the dutycycle of the carrier wave；
The data signal and the simulation are obtained to first base-band information and the demodulation of the second base-band information
Signal.
Alternatively, first base-band information is that the dutycycle of the carrier wave represents current signal and described
Two base-band informations are that the rising edge of the carrier wave or trailing edge information represent over-pressed signal.
The present invention further provides a kind of wireless communication apparatus, the radio communication device includes：
Acquisition module, for obtaining analog signal information to be passed and digital signal information respectively；
Modulation module, for when the analog signal information to be passed and digital signal information is got,
The analog signal information to be passed and digital signal information are modulated in a default carrier wave to be treated
Transmission signal；
Transmitter module, for launching the signal to be transmitted.
Alternatively, the modulation module includes：
Analog signal modulating unit, for the analog signal information to be passed to be modulated at into the carrier wave
The first base-band information in；
Digital signal modulated unit, for the digital signal information to be modulated at the second base of the carrier wave
Information；
Wherein, first base-band information be the dutycycle and second base-band information of the carrier wave be institute
The rising edge or trailing edge information of carrier wave are stated, or, first base-band information is the rising of the carrier wave
Edge or trailing edge information and second base-band information are the dutycycle of the carrier wave.
Alternatively, the wireless communication apparatus also include：
Receiver module, for receiving the mixed signal through modulation treatment that transmitting terminal is launched；
Processing module, for being demodulated filtering to the signal for receiving, isolate data signal and
Analog signal；
Transport module, for the filtered data signal and analog signal to be transmitted to Data processing
The heart.
Alternatively, the processing module includes：
First demodulating unit, it is described mixed to obtain for being demodulated to the mixed signal for receiving
First base-band information and the second base-band information of signal are closed, first base-band information is accounting for for the carrier wave
It is empty than and second base-band information be the carrier wave rising edge or trailing edge information, or, described the
One base-band information is the rising edge of the carrier wave or trailing edge information and second base-band information is the load
The dutycycle of ripple；
Second demodulating unit, for obtaining described to first base-band information and the demodulation of the second base-band information
Data signal and the analog signal.
Alternatively, first base-band information is that the dutycycle of the carrier wave represents current signal and described
Two base-band informations are that the rising edge of the carrier wave or trailing edge information represent over-pressed signal.
Wireless communication method proposed by the present invention and device, obtain analog signal information and numeral to be passed
Signal message；The analog signal information to be passed and digital signal information are modulated, obtains to be launched
Signal；Launch the signal to be transmitted.By analog signal and digital signal modulated in a carrier wave, in height
The transmission of the data signal of some low rates is realized while fast real-time Transmission analog signal, low rate is passed
Defeated data signal, strengthen vulnerability to jamming, to external world and inside interference have stronger vulnerability to jamming.
Description of the drawings
Fig. 1 is the schematic flow sheet of wireless communication method first embodiment of the present invention；
Fig. 2 is the schematic diagram of wireless communication method application scenarios wireless charging system of the present invention；
Fig. 3 is that the analog signal information to be passed and digital signal information are modulated at into a load in Fig. 1
The refinement schematic flow sheet of the step of ripple is to obtain signal to be transmitted；
Fig. 4 is the modulating wave schematic diagram of analog signal and data signal in one embodiment of the invention；
Fig. 5 is the schematic flow sheet of wireless communication method second embodiment of the present invention；
Fig. 6 is the refinement schematic flow sheet of the step of demodulating the mixed signal in Fig. 5 of the present invention；
Fig. 7 is the schematic flow sheet that wireless communication method of the present invention is applied to wireless charging system；
Fig. 8 is the module diagram of wireless communication apparatus first embodiment of the present invention；
Fig. 9 is the refinement module schematic diagram of modulation module in Fig. 8；
Figure 10 is the module diagram of wireless communication apparatus second embodiment of the present invention；
Figure 11 is the refinement module schematic diagram of processing module in Figure 10.
The realization of the object of the invention, functional characteristics and advantage will be done referring to the drawings further in conjunction with the embodiments
Explanation.
Specific embodiment
It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
For ease of understanding the present invention, illustrate by taking the wireless telecommunications of charging electric vehicle process as an example below,
But it is emphasized that the invention is not limited in the wireless telecommunications of charging electric vehicle process, it may also be used for
The wireless telecommunications process of other terminals.
With reference to Fig. 1, Fig. 1 is the schematic flow sheet of wireless communication method first embodiment of the present invention.
The present embodiment proposes a kind of wireless communication method, and the wireless communication method includes：
Step S10, obtains respectively analog signal information to be passed and digital signal information；
Wireless communication method of the present invention is implemented based on wireless charging system, with reference to Fig. 2, the wireless charging
System includes capital construction end and vehicle-mounted end, and vehicle-mounted end includes receiving coil, receiving terminal circuit and controller, car
Battery etc. is carried, capital construction end is to be embedded in underground part, including transmitting coil, transmitting terminal circuit and control
Device.The receiving coil is used for the electric energy of the transmitting coil for receiving capital construction end, through receiving terminal circuit and control
Device processed is converted into the electric energy of battery needs, and on-vehicle battery is charged.
In wireless charging system for electric automobile, vehicle-mounted side does not have the communication link of physical connection with capital construction side,
Can only realize that information is exchanged by way of wireless telecommunications, and the time delay of radio communication at present is larger, it is difficult to
Meet demand of the control loop to feedback of voltage and current information, it is thus possible to many technical indicators can be caused
Requirement cannot be met.For example in load changing, if because vehicle-mounted secondary voltage current information feeds back to
Vehicle-mounted former limit delay is excessive, and capital construction side former limit can be caused to adjust circuit can not in time make feedback regulation, enter
And cause device to damage because various electric stress are excessive, or undesirable voltage and electric current are exported,
Damage load.
In the present embodiment, vehicle-mounted side wireless transmitting terminals will in real time obtain and launch current analog signal and pair
The data signal of side whether overvoltage, capital construction lateral root according to the current analog signal and secondary for receiving whether
The data signal of overvoltage adjusts in time the voltage and electric current of output.
In the present embodiment the wireless communication method is applied to wireless charging system for electric automobile, this enforcement
Example scheme adopts induction type real-time communication mode, is mutually got in touch by way of electromagnetic field inducing.Nothing
The vehicle-mounted side or the base that are emitted through antenna, coil, bar magnet or direct wireless charging of line electricity electromagnetic field
The Wireless charging coil of side is built, the mode of the carrier wave utilization space electromagnetic field of modulation is launched.Wirelessly
The reception of electric electromagnetic field can pass through antenna, coil, bar magnet or directly use vehicle-mounted side or the base of wireless charging
The Wireless charging coil of side is built, carrier signal is gone out by electromagnetic wave induction.
Step S20, when the analog signal information to be passed and digital signal information is got, by institute
State analog signal information to be passed and digital signal information be modulated at it is to be launched to obtain in a default carrier wave
Signal；
It is understood that under normal circumstances, the carrier frequency of transmitting is less than below 20MHz, or even several
Hundred KHz, in the present embodiment, transmitting uses sine wave, the mode that sine wave is produced to use resonance
Mode, or it is straight using various radio frequency power amplifier modes such as Class A, Class B, the third interior, class D, E classes, penta classes
Connect sine wave output and be supplied to transmitting antenna.Because the mode of the electromagnetic wave induction field for using sends and receives,
So communication distance is very short, receiving the mode of sensing can receive specified frequency by way of resonance resonates
The electromagnetic wave of rate.
The generation of fundamental carrier can be produced using analog circuit, it is also possible to by DSP Digital Signal Processing,
After the filtering of the digital form such as FPGA field programmable gate arrays and CPLD CPLDs
Produce, or numeral mixes generation with analog circuit.
The base-band information such as the analog signal to be transmitted and data signal, by FSK frequency shift keyings or ASK
The mode of amplitude shift keying is modulated in fundamental wave, but is not limited to both modes.
With reference to Fig. 3, step S20 includes：
Step S21, by the analog signal information to be passed the first base-band information of the carrier wave is modulated at
In, and the digital signal information is modulated at into the second base-band information of the carrier wave, wherein, described
One base-band information be the dutycycle of the carrier wave and second base-band information be the carrier wave rising edge or
Trailing edge information, or, first base-band information be the rising edge or trailing edge information of the carrier wave and
Second base-band information is the dutycycle of the carrier wave.
In the present embodiment, the analog information to be transmitted, can be using FSK frequency shift keyings or ASK amplitude shift keys
The modulation systems such as control are modulated in ground floor base-band information, with pwm pulse width modulated duty cycle mode body
It is existing, wherein minimum is not 0 and 100% with maximum duty cycle.
It is using the digital defeated of microprocessor that pulse width modulation is a kind of simulation controlling party pulse width modulation
A kind of very effective technology being out controlled to analog circuit, is widely used in from measurement, communication
To Power Control with conversion many fields in pulse width modulation be using the numeral output of microprocessor come
A kind of very effective technology being controlled to analog circuit, is widely used in from measurement, communicates to work(
Rate is controlled in many fields with conversion.
Dutycycle refers to the shared time ratio within a cycle of high level.The dutycycle of square wave is
50%, dutycycle is 0.5, and the time shared by positive level that illustrates is 0.5 cycle.
In the present embodiment, the digital information to be transmitted, using FSK frequency shift keyings or ASK amplitude shift keyings
It is modulated in second layer base-band information etc. modulation system, specifically in the rising edge with PWM, or declines
Edge, communications protocol is self-defined.
In digital circuit, the height of voltage is represented with logic level.Logic level include high level and
Low level both.The digital circuit that different components and parts are formed, the corresponding logic level of voltage is also different.
In digital circuit, digital level is changed into high level (digital " 1 ") from low level (digital " 0 ")
At that moment (moment) be called rising edge.In TTL gate circuits, the voltage more than 3.5 volts is specified
For logic high, represented with numeral 1；Voltage of the voltage less than 0.3 volt is defined as logic low,
Represented with numeral 0.Digital level is changed into high level (digital " 1 ") from low level (digital " 0 ")
(moment) at that moment be called rising edge.
In digital circuit, digital level is changed into low level (digital " 0 ") from high level (digital " 1 ")
Be called trailing edge at that moment.In TTL gate circuits, the voltage more than 3.5 volts is defined as logic
High level, is represented with numeral 1；Voltage of the voltage less than 0.3 volt is defined as logic low, with numeral
0 represents.In digital circuit, digital level is changed into low level (digital " 0 ") from high level (digital " 1 ")
Be called trailing edge at that moment.
With reference to Fig. 4, by taking square wave as an example, in the present embodiment, the analog information to be transmitted is pair to the carrier wave
Side current signal, can be modulated at the side using the modulation system such as FSK frequency shift keyings or ASK amplitude shift keyings
In the ground floor base-band information of ripple, embodied in pwm pulse width modulated duty cycle mode, wherein it is minimum with
Maximum duty cycle is not 0 and 100%.The digital information to be transmitted is secondary overvoltage signal, is used and first
The base-band information identical modulation system such as modulation system such as FSK frequency shift keyings or ASK amplitude shift keyings is modulated at
In the second layer base-band information of the square wave, specifically in the rising edge with PWM.In the present embodiment,
The duty cycle square wave transmission secondary current signal in each cycle, the square wave rising edge in each cycle
Transmission secondary overvoltage signal.
It is understood that in the present embodiment, the digital information to be transmitted, it is possible to use FSK or ASK
Be modulated in ground floor base-band information etc. modulation system, embodied in PWM duty cycle mode, wherein it is minimum with
Maximum duty cycle is not 0 and 100%.The analog information to be transmitted, it is possible to use FSK or ASK etc. is adjusted
Mode processed is modulated in second layer base-band information, specifically in the rising edge with PWM, or trailing edge,
Communications protocol is self-defined.
Step S30, launches the signal to be transmitted.
In the present embodiment, the frequency of PWM ripples must not advise less than 1KHz, can be entered according to practical application
Row adjustment, to realize mixing more digital informations and more analog informations.
Analog signal and the base-band information of data signal, transmitting terminal modulation are demodulated with receiving terminal, Ke Yiyong
Analog form mixes, it is also possible to logical DSP Digital Signal Processing, FPGA field programmable gate arrays and
Produce after the filtering of the digital forms such as CPLD CPLDs, or numeral is mixed with analog circuit
Close and produce.
Further, in the present embodiment, in order to further strengthen vulnerability to jamming, the frequency of specificity is prevented
Interference, smoothly or the cycle is not forced in communication, and the frequency of emitting side can be adjusted using different frequency
Frequency mode is launched, and realizes maximum anti-interference.
The wireless communication method that the present embodiment is proposed, by the current analog signal of vehicle-mounted end and overvoltage numeral letter
Number mixing, modulation send, the numeral of some low rates is realized while high speed real-time Transmission analog signal
The transmission of signal, the data signal of lower rate transmissions, analog signal can regularly be carried out some identification,
Error correction, strengthen vulnerability to jamming, to external world and inside interference have stronger vulnerability to jamming.
Further, second enforcement of the present invention is proposed based on wireless communication method first embodiment of the present invention
Example, with reference to Fig. 5, the wireless communication method also includes step：
Step S40, receives the mixed signal through modulation treatment that transmitting terminal is launched；
In the present embodiment, the induced emission coil can be converted into receiving coil, and receiving coil can be with
Transmitting coil is converted into, half-duplex or duplex signaling is thus capable of achieving, farthest to save and public affairs
Use hardware resource.
Step S50, the signal to receiving is demodulated filtering, isolates data signal and simulation letter
Number；
With reference to Fig. 6, step S50 includes：
Step S51, the mixed signal to receiving is demodulated, to obtain the of the mixed signal
One base-band information and the second base-band information, first base-band information is the dutycycle of the carrier wave and described
Second base-band information is the rising edge of the carrier wave or trailing edge information, or, first base-band information
Rising edge or trailing edge information and second base-band information for the carrier wave is the duty of the carrier wave
Than；
Step S52, to first base-band information and the second base-band information demodulation obtain the data signal and
The analog signal.
First base-band information is that the dutycycle of the carrier wave represents current signal and second base band is believed
Cease rising edge or trailing edge information for the carrier wave and represent over-pressed signal.
In the present embodiment, the base-band information such as the analog signal of the signal transmission and data signal, passes through
The mode of FSK frequency shift keyings or ASK amplitude shift keyings is modulated in fundamental wave, but is not limited to both sides
Formula.
In this embodiment, after receiving the signal, by using the corresponding solution of transmitting terminal modulated signal
Tune mode demodulates the signal, such as mode of FSK frequency shift keyings or ASK amplitude shift keyings etc..
In the present embodiment, after the analog signal and data signal is demodulated, by filter circuit
The analog signal for demodulating and digital signal filter are processed.
Step S60, the data signal and analog signal are transmitted to data processing centre.
With reference to Fig. 7, vehicle-mounted side wireless transmission end first sends out voltage and current signal modulation for a mixed signal
To the wireless receiving end of capital construction side, wireless receiving end receives and pass through after the signal that transmitting terminal sends demodulator circuit
Analog and digital signal is demodulated, being then sent to data processor after filter circuit process carries out computing
Process, according to the analog and digital signal output control signal, the control signal is control wireless charging
The signal of the voltage and current exported in electric system.
The wireless communication method that the present embodiment is proposed, can receive solution and mediate to the signal of wireless transmitting terminals transmitting
Reason, the modulation system adopted by transmitting terminal is demodulated the signal, obtains data signal and analog signal,
The induced emission coil can be converted into receiving coil, and receiving coil can be converted into transmitting coil, by
This achievable half-duplex or duplex signaling, farthest to save and shared hardware resource.
The present invention further provides a kind of wireless communication apparatus.
With reference to Fig. 8, Fig. 8 is the module diagram of wireless communication apparatus of the present invention.
It is emphasized that it will be apparent to those skilled in the art that functional block diagram is only shown in Fig. 8
The exemplary plot of one preferred embodiment, those skilled in the art is around the wireless communication apparatus shown in Fig. 8
Functional module, can easily carry out the supplement of new functional module；The title of each functional module is self-defined
Title, is only used for aiding in each program function block for understanding wireless communication apparatus, is not used in the restriction present invention
Technical scheme, the core of technical solution of the present invention is that the functional module of each self-defined title to be reached
Function.
Acquisition module 10, for obtaining analog signal information to be passed and digital signal information respectively；
Wireless communication method of the present invention is implemented based on wireless charging system, with reference to Fig. 2, the wireless charging
System includes capital construction end and vehicle-mounted end, and vehicle-mounted end includes receiving coil, receiving terminal circuit and controller, car
Battery etc. is carried, capital construction end is to be embedded in underground part, including transmitting coil, transmitting terminal circuit and control
Device.The receiving coil is used for the electric energy of the transmitting coil for receiving capital construction end, through receiving terminal circuit and control
Device processed is converted into the electric energy of battery needs, and on-vehicle battery is charged.
In wireless charging system for electric automobile, vehicle-mounted side does not have the communication link of physical connection with capital construction side,
Can only realize that information is exchanged by way of wireless telecommunications, and the time delay of radio communication at present is larger, it is difficult to
Meet demand of the control loop to feedback of voltage and current information, it is thus possible to many technical indicators can be caused
Requirement cannot be met.For example in load changing, if because vehicle-mounted secondary voltage current information feeds back to
Vehicle-mounted former limit delay is excessive, and capital construction side former limit can be caused to adjust circuit can not in time make feedback regulation, enter
And cause device to damage because various electric stress are excessive, or undesirable voltage and electric current are exported,
Damage load.
In the present embodiment, vehicle-mounted side wireless transmitting terminals will in real time obtain and launch current analog signal and pair
The data signal of side whether overvoltage, capital construction lateral root according to the current analog signal and secondary for receiving whether
The data signal of overvoltage adjusts in time the voltage and electric current of output.
In the present embodiment the wireless communication method is applied to wireless charging system for electric automobile, this enforcement
Example scheme adopts induction type real-time communication mode, is mutually got in touch by way of electromagnetic field inducing.Nothing
The vehicle-mounted side or the base that are emitted through antenna, coil, bar magnet or direct wireless charging of line electricity electromagnetic field
The Wireless charging coil of side is built, the mode of the carrier wave utilization space electromagnetic field of modulation is launched.Wirelessly
The reception of electric electromagnetic field can pass through antenna, coil, bar magnet or directly use vehicle-mounted side or the base of wireless charging
The Wireless charging coil of side is built, carrier signal is gone out by electromagnetic wave induction.
Modulation module 20, for getting the analog signal information to be passed and digital signal information
When, the analog signal information to be passed and digital signal information are modulated in a default carrier wave to obtain
To signal to be transmitted；
It is understood that under normal circumstances, the carrier frequency of transmitting is less than below 20MHz, or even several
Hundred KHz, in the present embodiment, transmitting uses sine wave, the mode that sine wave is produced to use resonance
Mode, or it is straight using various radio frequency power amplifier modes such as Class A, Class B, the third interior, class D, E classes, penta classes
Connect sine wave output and be supplied to transmitting antenna.Because the mode of the electromagnetic wave induction field for using sends and receives,
So communication distance is very short, receiving the mode of sensing can receive specified frequency by way of resonance resonates
The electromagnetic wave of rate.
The generation of fundamental carrier can be produced using analog circuit, it is also possible to by DSP Digital Signal Processing,
After the filtering of the digital form such as FPGA field programmable gate arrays and CPLD CPLDs
Produce, or numeral mixes generation with analog circuit.
The base-band information such as the analog signal to be transmitted and data signal, by FSK frequency shift keyings or ASK
The mode of amplitude shift keying is modulated in fundamental wave, but is not limited to both modes.
With reference to Fig. 9, the modulation module 20 includes：
Analog signal modulating unit 21, for the analog signal information to be passed to be modulated at into the load
In first base-band information of ripple；
Digital signal modulated unit 22, for the digital signal information to be modulated at into the second of the carrier wave
Base-band information；
Wherein, first base-band information be the dutycycle and second base-band information of the carrier wave be institute
The rising edge or trailing edge information of carrier wave are stated, or, first base-band information is the rising of the carrier wave
Edge or trailing edge information and second base-band information are the dutycycle of the carrier wave.In the present embodiment,
The analog information to be transmitted, can be modulated at using the modulation system such as FSK frequency shift keyings or ASK amplitude shift keyings
In ground floor base-band information, embodied in pwm pulse width modulated duty cycle mode, wherein minimum and maximum
Dutycycle is not 0 and 100%.
It is using the digital defeated of microprocessor that pulse width modulation is a kind of simulation controlling party pulse width modulation
A kind of very effective technology being out controlled to analog circuit, is widely used in from measurement, communication
To Power Control with conversion many fields in pulse width modulation be using the numeral output of microprocessor come
A kind of very effective technology being controlled to analog circuit, is widely used in from measurement, communicates to work(
Rate is controlled in many fields with conversion.
Dutycycle refers to the shared time ratio within a cycle of high level.The dutycycle of square wave is
50%, dutycycle is 0.5, and the time shared by positive level that illustrates is 0.5 cycle.
In the present embodiment, the digital information to be transmitted, using FSK frequency shift keyings or ASK amplitude shift keyings
It is modulated in second layer base-band information etc. modulation system, specifically in the rising edge with PWM, or declines
Edge, communications protocol is self-defined.
In digital circuit, the height of voltage is represented with logic level.Logic level include high level and
Low level both.The digital circuit that different components and parts are formed, the corresponding logic level of voltage is also different.
In digital circuit, digital level is changed into high level (digital " 1 ") from low level (digital " 0 ")
At that moment (moment) be called rising edge.In TTL gate circuits, the voltage more than 3.5 volts is specified
For logic high, represented with numeral 1；Voltage of the voltage less than 0.3 volt is defined as logic low,
Represented with numeral 0.Digital level is changed into high level (digital " 1 ") from low level (digital " 0 ")
(moment) at that moment be called rising edge.
In digital circuit, digital level is changed into low level (digital " 0 ") from high level (digital " 1 ")
Be called trailing edge at that moment.In TTL gate circuits, the voltage more than 3.5 volts is defined as logic
High level, is represented with numeral 1；Voltage of the voltage less than 0.3 volt is defined as logic low, with numeral
0 represents.In digital circuit, digital level is changed into low level (digital " 0 ") from high level (digital " 1 ")
Be called trailing edge at that moment.
With reference to Fig. 4, by taking square wave as an example, in the present embodiment, the analog information to be transmitted is pair to the carrier wave
Side current signal, can be modulated at the side using the modulation system such as FSK frequency shift keyings or ASK amplitude shift keyings
In the ground floor base-band information of ripple, embodied in pwm pulse width modulated duty cycle mode, wherein it is minimum with
Maximum duty cycle is not 0 and 100%.The digital information to be transmitted is secondary overvoltage signal, is used and first
The base-band information identical modulation system such as modulation system such as FSK frequency shift keyings or ASK amplitude shift keyings is modulated at
In the second layer base-band information of the square wave, specifically in the rising edge with PWM.In the present embodiment,
The duty cycle square wave transmission secondary current signal in each cycle, the square wave rising edge in each cycle
Transmission secondary overvoltage signal.
It is understood that in the present embodiment, the digital information to be transmitted, it is possible to use FSK or ASK
Be modulated in ground floor base-band information etc. modulation system, embodied in PWM duty cycle mode, wherein it is minimum with
Maximum duty cycle is not 0 and 100%.The analog information to be transmitted, it is possible to use FSK or ASK etc. is adjusted
Mode processed is modulated in second layer base-band information, specifically in the rising edge with PWM, or trailing edge,
Communications protocol is self-defined.
Transmitter module 30, for launching the signal to be transmitted.
In the present embodiment, the frequency of PWM ripples must not advise less than 1KHz, can be entered according to practical application
Row adjustment, to realize mixing more digital informations and more analog informations.
Analog signal and the base-band information of data signal, transmitting terminal modulation are demodulated with receiving terminal, Ke Yiyong
Analog form mix, it is also possible to by DSP Digital Signal Processing, FPGA field programmable gate arrays and
Produce after the filtering of the digital forms such as CPLD CPLDs, or numeral is mixed with analog circuit
Close and produce.
Further, in the present embodiment, in order to further strengthen vulnerability to jamming, the frequency of specificity is prevented
Interference, smoothly or the cycle is not forced in communication, and the frequency of emitting side can be adjusted using different frequency
Frequency mode is launched, and realizes maximum anti-interference.
The wireless communication apparatus that the present embodiment is proposed, by the current analog signal of vehicle-mounted end and overvoltage numeral letter
Number mixing, modulation send, the numeral of some low rates is realized while high speed real-time Transmission analog signal
The transmission of signal, the data signal of lower rate transmissions, analog signal can regularly be carried out some identification,
Error correction, strengthen vulnerability to jamming, to external world and inside interference have stronger vulnerability to jamming.
Further, second enforcement of the present invention is proposed based on wireless communication apparatus first embodiment of the present invention
Example, with reference to Figure 10, the wireless communication apparatus also include：
Receiver module 40, for receive the hybrid digital information through modulation treatment that transmitting terminal launches and
The signal of analog information；
In the present embodiment, the induced emission coil can be converted into receiving coil, and receiving coil can be with
Transmitting coil is converted into, half-duplex or duplex signaling is thus capable of achieving, farthest to save and public affairs
Use hardware resource.
Processing module 50, for being demodulated filtering to the signal for receiving, isolates data signal
And analog signal；
With reference to Figure 11, the processing module 50 includes：
First demodulating unit 51, it is described to obtain for being demodulated to the mixed signal for receiving
First base-band information and the second base-band information of mixed signal, first base-band information is the carrier wave
Dutycycle and second base-band information are the rising edge or trailing edge information of the carrier wave, or, it is described
First base-band information is the rising edge of the carrier wave or trailing edge information and second base-band information for described
The dutycycle of carrier wave；
Second demodulating unit 52, for obtaining institute to first base-band information and the demodulation of the second base-band information
State data signal and the analog signal.
In the present embodiment, the base-band information such as the analog signal of the signal transmission and data signal, passes through
The mode of FSK frequency shift keyings or ASK amplitude shift keyings is modulated in fundamental wave, but is not limited to both sides
Formula.
In this embodiment, after receiving the signal, by using the corresponding solution of transmitting terminal modulated signal
Tune mode demodulates the signal, such as mode of FSK frequency shift keyings or ASK amplitude shift keyings etc..
In the present embodiment, after the analog signal and data signal is demodulated, by filter circuit
The analog signal for demodulating and digital signal filter are processed.
Transport module 60, transmits to data for the just filtered data signal and analog signal
Reason center.
With reference to Fig. 7, vehicle-mounted side wireless transmission end first sends out voltage and current signal modulation for a mixed signal
To the wireless receiving end of capital construction side, wireless receiving end receives and pass through after the signal that transmitting terminal sends demodulator circuit
Analog and digital signal is demodulated, being then sent to data processor after filter circuit process carries out computing
Process, according to the analog and digital signal output control signal, the control signal is control wireless charging
The signal of the voltage and current exported in electric system.
The wireless communication apparatus that the present embodiment is proposed, can receive solution and mediate to the signal of wireless transmitting terminals transmitting
Reason, the modulation system adopted by transmitting terminal is demodulated the signal, obtains data signal and analog signal,
The induced emission coil can be converted into receiving coil, and receiving coil can be converted into transmitting coil, by
This achievable half-duplex or duplex signaling, farthest to save and shared hardware resource.
It should be noted that herein, term " including ", "comprising" or its any other change
Body is intended to including for nonexcludability, so that a series of process, method, the article including key elements
Or device not only includes those key elements, but also including other key elements being not expressly set out, or
Also include the key element intrinsic for this process, method, article or device.In no more restrictions
In the case of, the key element limited by sentence "including a ...", it is not excluded that in the mistake including the key element
Also there is other identical element in journey, method, article or device.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-mentioned
Embodiment method can add the mode of required general hardware platform to realize by software, naturally it is also possible to logical
Cross hardware, but in many cases the former is more preferably embodiment.It is of the invention based on such understanding
The part that technical scheme substantially contributes in other words to prior art can in the form of software product body
Reveal and, the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disc, light
Disk) in, including some instructions are used so that a station terminal equipment (can be mobile phone, computer is serviced
Device, air-conditioner, or network equipment etc.) perform method described in each embodiment of the invention.
The preferred embodiments of the present invention are these are only, the scope of the claims of the present invention is not thereby limited, it is every
The equivalent structure made using description of the invention and accompanying drawing content or equivalent flow conversion, or directly or
Connect and be used in other related technical fields, be included within the scope of the present invention.
Claims (10)
1. a kind of wireless communication method, it is characterised in that the wireless communication method includes：
Analog signal information to be passed and digital signal information are obtained respectively；
When the analog signal information to be passed and digital signal information is got, will be described to be passed
Analog signal information and digital signal information be modulated in a default carrier wave to obtain signal to be transmitted；
Launch the signal to be transmitted.
2. wireless communication method as claimed in claim 1, it is characterised in that it is described will be described to be passed
Analog signal information and digital signal information include the step of being modulated at a carrier wave：
The analog signal information to be passed is modulated in the first base-band information of the carrier wave, and will
The digital signal information is modulated at the second base-band information of the carrier wave, wherein, the first base band letter
Cease the rising edge or trailing edge letter that dutycycle and second base-band information for the carrier wave are the carrier wave
Breath, or, first base-band information is the rising edge or trailing edge information and described second of the carrier wave
Base-band information is the dutycycle of the carrier wave.
3. wireless communication method as claimed in claim 1 or 2, it is characterised in that the wireless telecommunications
Method also includes：
Receive the mixed signal through modulation treatment that transmitting terminal is launched；
The signal to receiving is demodulated filtering, isolates data signal and analog signal；
The data signal and analog signal are transmitted to data processing centre.
4. wireless communication method as claimed in claim 3, it is characterised in that the described pair of institute for receiving
State signal and be demodulated filtering, include the step of isolate data signal and analog signal：
The mixed signal to receiving is demodulated, and is believed with the first base band for obtaining the mixed signal
Breath and the second base-band information, first base-band information is the dutycycle of the carrier wave and second base band
Information is the rising edge of the carrier wave or trailing edge information, or, first base-band information is the load
The rising edge or trailing edge information and second base-band information of ripple are the dutycycle of the carrier wave；
The data signal and the simulation are obtained to first base-band information and the demodulation of the second base-band information
Signal.
5. wireless communication method as claimed in claim 4, it is characterised in that first base-band information
Dutycycle for the carrier wave represents current signal and second base-band information is the rising edge of the carrier wave
Or trailing edge information represents over-pressed signal.
6. a kind of wireless communication apparatus, it is characterised in that the radio communication device includes：
Acquisition module, for obtaining analog signal information to be passed and digital signal information respectively；
Modulation module, for when the analog signal information to be passed and digital signal information is got,
The analog signal information to be passed and digital signal information are modulated in a default carrier wave to be treated
Transmission signal；
Transmitter module, for launching the signal to be transmitted.
7. wireless communication apparatus as claimed in claim 6, it is characterised in that the modulation module includes：
Analog signal modulating unit, for the analog signal information to be passed to be modulated at into the carrier wave
The first base-band information in；
Digital signal modulated unit, for the digital signal information to be modulated at the second base of the carrier wave
Information；
Wherein, first base-band information be the dutycycle and second base-band information of the carrier wave be institute
The rising edge or trailing edge information of carrier wave are stated, or, first base-band information is the rising of the carrier wave
Edge or trailing edge information and second base-band information are the dutycycle of the carrier wave.
8. wireless communication apparatus as claimed in claims 6 or 7, it is characterised in that the wireless telecommunications
Device also includes：
Receiver module, for receiving the mixed signal through modulation treatment that transmitting terminal is launched；
Processing module, for being demodulated filtering to the signal for receiving, isolate data signal and
Analog signal；
Transport module, for the filtered data signal and analog signal to be transmitted to Data processing
The heart.
9. wireless communication apparatus as claimed in claim 8, it is characterised in that the processing module includes：
First demodulating unit, it is described mixed to obtain for being demodulated to the mixed signal for receiving
First base-band information and the second base-band information of signal are closed, first base-band information is accounting for for the carrier wave
It is empty than and second base-band information be the carrier wave rising edge or trailing edge information, or, described the
One base-band information is the rising edge of the carrier wave or trailing edge information and second base-band information is the load
The dutycycle of ripple；
Second demodulating unit, for obtaining described to first base-band information and the demodulation of the second base-band information
Data signal and the analog signal.
10. wireless communication apparatus as claimed in claim 9, it is characterised in that the first base band letter
Cease the dutycycle for the carrier wave represent current signal and second base-band information be the carrier wave rising
Edge or trailing edge information represent over-pressed signal.
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| CN201610429431.9A CN106561004A (en) | 2016-06-16 | 2016-06-16 | Wireless communication method and device |
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|---|---|---|---|
| CN201610429431.9A CN106561004A (en) | 2016-06-16 | 2016-06-16 | Wireless communication method and device |
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| CN109760548A (en) * | 2019-03-28 | 2019-05-17 | 中惠创智无线供电技术有限公司 | A kind of wireless system and method |
| CN109888882A (en) * | 2019-03-27 | 2019-06-14 | 维沃移动通信有限公司 | A kind of communication means, terminal device and power supply adaptor |
| CN109981504A (en) * | 2019-02-27 | 2019-07-05 | 恒大智慧充电科技有限公司 | A kind of communication means, device, computer equipment and storage medium |
| CN111179568A (en) * | 2019-12-25 | 2020-05-19 | 中电海康集团有限公司 | Mowing robot communication method and system based on boundary electromagnetic signals |
| CN112087063A (en) * | 2020-03-25 | 2020-12-15 | 中国矿业大学 | Improved active disturbance rejection control method and system of wireless power transmission system |
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Application publication date: 20170412 |