CN108270469A - The electronic device of near field wireless telecommunications and its self checking method of oscillating circuit can be achieved - Google Patents
The electronic device of near field wireless telecommunications and its self checking method of oscillating circuit can be achieved Download PDFInfo
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- CN108270469A CN108270469A CN201710042632.8A CN201710042632A CN108270469A CN 108270469 A CN108270469 A CN 108270469A CN 201710042632 A CN201710042632 A CN 201710042632A CN 108270469 A CN108270469 A CN 108270469A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/22—Capacitive coupling
-
- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Present invention relates generally to the electronic device of achievable near field wireless telecommunications and its self checking methods of oscillating circuit, including the aerial coil and inductance capacitance being connected in parallel between first node and second node, the data of the presence or absence of wireless induction signal that aerial coil and inductance capacitance detect and decoding wireless induction signal are judged by processor.In addition a signal sending end of processor is coupled to the control terminal of a switching tube, processor driving switch pipe when sending wireless carrier signal using aerial coil and inductance capacitance switches between turning on and off, and aerial coil and inductance capacitance thereby are considered as oscillating circuit and generate the wireless carrier signal of outside electromagnetic radiation.It can realize the both-way communication of wireless signal, can be widely applied to realize the information exchange between different electrical equipments in various intelligentized control systems.
Description
Technical field
Present invention relates generally to wireless communication technique field, specifically, be be related to a kind of achievable near field without
The electronic device of line communication can realize the two-way receipts of wireless signal between the electrical equipment close to each other in certain distance
Hair communication, can be widely applied to realize the information exchange between different electrical equipments in various intelligentized control systems, especially
It can also be large number of solar panel configuration physical address of photovoltaic generating system etc..
Background technology
It is non-renewable with traditional chemical industry energy such as oil, coal, coal gas etc. in energy field, and chemical industry energy
Negative environment problem becomes to be on the rise caused by source, and haze that especially developing countries such as China frequency occurs etc. is extremely disliked
Bad environment, the mankind it is well recognized that：Seek a kind of inexhaustible, in cycles regenerative resource replacing resource limited and
There is traditional chemical industry energy of pollution to environment, become current important proposition in the urgent need to address.Using new technology and new material as
The development in science and technology on basis, the development and utilization for being modernized regenerative resource, such as solar energy, geothermal energy and wind energy, ocean
The new energy of energy, biomass energy and nuclear fusion energy etc., environmental protection and sustainable development is more and more widely used.
Due to this new energy of photovoltaic generation have clean, safe and reliable, operating charges are low, daily maintenance simply and arbitrarily
Point such as can all use at the advantages everywhere, and photovoltaic generating system is made to become countries in the world common concern and the novel industry given priority to, it
Indispensable effect is played in the electrical problem for solving energy shortage and remote districts.We are from photovoltaic generating system
From the point of view of one of core equipment namely photovoltaic battery panel/component, it is contemplated that the photovoltaic cell plate array that entire electricity generation system is equipped with
Quantity is especially huge, other electronic equipments for example need to capture the parameter of solar panel, send instruction/data to solar panel, so
Other electronic electric equipments need frequently to carry out information exchange with the electrical equipment of solar panel, it is contemplated that the quantity of solar panel
With prevent communication crosstalk, we must be set up a kind of rational communication mechanism, and by this communication mechanism, we can be from battery
Plate captures the running parameter data of solar panel, or battery-allocated address etc..
Current various intelligent control systems, for example, it is wireless kilowatt meter reading-out system inside intellectual communityintellectualized village, access control system, anti-
Steal alarm system and fire safety system etc., industrial data acquisition system, hydrometeorological control system, robot control system and
Digital imagery transmission system etc. all be unable to do without the transmission of data information.It can be said that data information transfer system is various intelligences
The important component of control system, and the mode that data are sent largely uses wired data mode, such as parallel biography
It send, serially transfer, CAN bus and other various agreements etc., the transport vehicle of data is double in wired data transfer mode
Twisted wire, coaxial cable or optical fiber.But in the monitoring system of microcontroller or similar processor is employed, many application scenarios
Data acquisition device is mounted in the scene or field of harsh environmental conditions, and photovoltaic plant is exactly much to establish in water outside of the city
Domain or desert belt.Especially：Then collected data communication is sent to backstage by handheld terminal and counts to handheld terminal
It calculates machine equipment and carries out data analysis, processing.Data transmission in this way between data acquisition device and handheld terminal need to solve to communicate
Problem, it is clearly improper according to wired data transfer mode, such as the incredible amount in photovoltaic plant panel array.It examines
Consider data transmission to realize that data transmit with wireless way for transmitting by air or vacuum, have line number compared to traditional
According to transmission, wireless data transmission mode can not consider the installation question of transmission cable, so as to save a large amount of electric wires and people
Work reduces difficulty of construction and cost, is the research topic for having very much development potentiality.
The photovoltaic module mode of generating electricity by way of merging two or more grid systems is usually that the component of these series connection is in parallel again to give inversion after multiple components are first connected
Device provides direct voltage source, and inverter is again by converting direct-current power into alternating-current power.It is often needed when photovoltaic module array is installed for the first time
These numerous photovoltaic module distribution internet protocol addresses are given, avoiding can not be effective when being communicated with multiple photovoltaic modulies
The different photovoltaic module of identification, and realize the communication of the data between photovoltaic module and other electronic equipments or command communication.Separately
It is outer to consider many times to need to know the various manufacture information of each photovoltaic module, such as production sequence number etc., this
It needs individually to realize communication function with each photovoltaic module.Based on these requirements, the content hereinafter of the application will introduce one
Kind can realize the electronic device of two-way communication with photovoltaic module, all employ communication module in each photovoltaic module, make
Each photovoltaic module communication module and electronic device can realize communication function, it is ensured that can be from electronics end
Communication module captures the manufacture information of photovoltaic module, and can also realize the distribution to multiple photovoltaic modulies into row address.
Invention content
In one embodiment, the present invention discloses a kind of wireless communication electronic device, including：
The aerial coil and inductance capacitance being connected in parallel between the first and second nodes；
First node is coupled to the signal receiving end of a processor, judges that aerial coil and inductance capacitance detect by processor
The presence or absence of wireless induction signal and decoding wireless induction signal data；
One signal sending end of processor is coupled to the control terminal of a switching tube, and processor is utilizing aerial coil and sensing
Driving switch pipe switches between turning on and off when capacitance sends wireless carrier signal, thereby regards aerial coil and inductance capacitance
The wireless carrier signal of outside electromagnetic radiation is generated for an oscillating circuit.
Above-mentioned wireless communication electronic device, second node are coupled to the divider node of a divider and in second nodes
Place applies the partial pressure value provided by divider.
Above-mentioned wireless communication electronic device puts resistance on divider and underlying resistance is connected to voltage receiving terminal and ginseng
Between examining ground, power supply is transported to voltage receiving terminal；And the first capacitance is connected between voltage receiving terminal and reference ground, and
The second capacitance is also connected between reference ground at the upper divider node for putting resistance and underlying resistive interconnections.
Above-mentioned wireless communication electronic device is connected with one or more overvoltage protectors between the first and second nodes
Part.
Above-mentioned wireless communication electronic device is connected with third capacitance between first node and reference ground.
Above-mentioned wireless communication electronic device, the first end of switching tube is connected to first node and second end is connected to reference ground.
Above-mentioned wireless communication electronic device, the low and high level pulse signal of processor output are defeated by a coupled capacitor
It is sent to the control terminal of switching tube.
Above-mentioned wireless communication electronic device, there are one resistance for connection between the control terminal and reference ground of switching tube.
Above-mentioned wireless communication electronic device, there are one resistance for connection between the first and second nodes.
Above-mentioned wireless communication electronic device, the self-test signal end of processor are connected to first node by a resistance,
And the self-test pulse-couple that processor is exported at self-test signal end is to first node；Wherein：
In the stage of processor output self-test pulse, the voltage condition of first node is detected simultaneously by the signal receiving end of processor
Thereby judge that aerial coil whether there is breakpoint.
Above-mentioned wireless communication electronic device, processor carry out analog quantity to the sine wave of wireless induction signal received
To the conversion of digital quantity, the crest value and valley value of sine wave are captured, and by peak value to the amplitude between valley and preset threshold
Value is compared, and only when amplitude is higher than predetermined threshold value, wireless induction signal is just considered as the effective wireless induction letter received
Number, otherwise processor will determine that inductive signal is invalid wireless induction signal.
In another embodiment, it in addition further discloses based on the oscillating circuit in above-mentioned wireless communication electronic device
Self checking method, the self-test signal end of processor are connected to first node, and processor is at self-test signal end by a resistance
The self-test pulse-couple exported is to first node；The wherein described method includes：
In the stage of processor output self-test pulse, the voltage condition of first node is detected by processor and thereby judges antenna
Coil whether there is breakpoint：Within any one period from rising edge to failing edge of the self-test pulse：If antenna line
It encloses LR and forward voltage amplitude V of the breakpoint then at first node occursUP1At first node when breakpoint does not occur than aerial coil LR
Forward voltage amplitude VUP2It will be more greatly.Alternatively, in any one period from rising edge to failing edge of the self-test pulse
It is interior：If processor judges the forward voltage amplitude V at first nodeUP1Then antenna also bigger than the reference voltage of some setting
Breakpoint occurs for coil LR；If processor judges the forward voltage amplitude V at first nodeUP2Than the reference electricity of some setting
Pressure is also small, and breakpoint does not occur for aerial coil LR.
Description of the drawings
Read it is described further below and with reference to the following drawings after, feature and advantage of the invention will be evident：
Fig. 1 is the example schematic for the wireless communication electronic device that near-field communication can be achieved.
Fig. 2 is the example schematic that wireless communication electronic device carries coil self-checking function.
Fig. 3 is the example schematic of cascade spiral winding as aerial coil layout on circuit boards.
Fig. 4 is the example schematic of individual spiral winding as aerial coil layout on circuit boards.
Fig. 5 is whether aerial coil occurs breakpoint first node and show different voltage fluctuation amplitudes.
Specific embodiment
Below in conjunction with each embodiment, the solution of the present invention is clearly completely illustrated, described embodiment is only
It is the present invention embodiment not all with the embodiment being described herein used in explanation, based on such embodiment, the technology of this field
The scheme that personnel are obtained under the premise of creative work is not made belongs to protection scope of the present invention.
Data acquire and transmission is the basis of modern electronic equipment instrument, in Industry Control, energy industry and experimental study
Medium numerous areas is used widely.When data collection terminal（Handheld device）During in non-fixed position or motion state, number
It must be detached according to collecting device with host, while also need to utilize battery powered.Therefore, it is made of wireless transceiver circuit or module
Data acquire and Transmission system is the settling mode of motion type data acquisition equipment.Than more typical wireless transceiver circuit or module
There are the wireless sensor and the also remote control module sum number of 433/868/915MHz communication frequencys using 2.4GHz communication frequencys
According to transmission module and the gsm module of 900/1800MHz communication frequencys, although these communication schemes are more universal and ripe,
But these existing wireless transceiver circuits or module be easy to cause the drawbacks such as whole system volume is excessive and power consumption is higher, it is impossible to complete
Full up foot uses the demand of battery powered Portable Data-Acquisition System.In photovoltaic plant, in face of array it is extensive,
Intensity deployment, it is only necessary to short-range communication, traditional wireless communication modules to be easy to cause the resistance of network communication instead for we
Plug, the capacity for reducing network, the power consumption for increasing node device, the service life for shortening node device.For it is this it is practical march into the arena it is logical
News, the application subsequent content can be provided to be controlled using the processor of microcontroller etc as the data transmit-receive with bi-directional communication function
Device is used as the core of transceiver module by the loop aerial that enameled wire turns to.
Referring to Fig. 1, wireless communication electronic device includes being connected in parallel between first node NODE1 and second node NODE2
Aerial coil LR and inductance capacitance CR, wherein the important link as cost consideration, aerial coil LR can be enameled wire coiling
Into loop aerial coil antenna, inductance coil can be equivalent to.Direct current power source voltage VCC is stable voltage in figure
Source, it is observed that constituting a divider by resistance RI1 and resistance RI2, and resistance RI1 and resistance RI2 are connected in series with
Between a voltage receiving terminal NODE0 and reference ground GND for divider, in addition in divider between resistance RI1 and resistance RI2
Interconnecting nodes/divider node for NODE3, second node NODE2 is coupled to the divider node NODE3 of divider, and the
Apply at two node NODE2 and provide partial pressure value by divider, partial pressure value is equal to RI2*VCC/ (RI1+RI2).As option, go back
The first capacitance CI1 can be connected between voltage receiving terminal NODE0 and reference ground GND, and as option, it can also be
On put resistance RI1 and underlying resistance RI2 interconnection divider node NODE3 at the second capacitance is connected between reference ground GND
CI2.The capacitance of general first capacitance CI1 and the second capacitance CI2 can be roughly equal, but the electricity of the first capacitance CI1 and second
The capacitance for holding CI2 is often the 10 of the capacitance of inductance capacitance CR3Multiplying power or so.
Referring to Fig. 1, when aerial coil LR and inductance capacitance CR are considered reception of wireless signals module, need to meet first
Node NODE1 is coupled to the signal receiving end of processor 100.It, actually can also be in first node although not shown in figure
Operational amplifier is set between the signal receiving end of NODE1 and processor 100, and the effect of operational amplifier is to offset aerial coil
The voltage magnitude of the wireless signal that LR is sensed because the distance of aerial coil LR and signal source is not known and caused by attenuation, it is right
The small-signal of wireless signal carries out one or more levels amplification, equivalent to increase the distance of near field wireless signal transmission, then
Amplified signal is fed through to the signal receiving end of processor 100 again.The operational amplifying module of certain processor 100 itself configuration
The measure being amplified to original faint wireless induction signal can be performed without operational amplifier is separately provided again.Subsequently
Processor 100 also needs to carry out the wireless induction signal received analog quantity to the conversion of digital quantity namely carries out A/D conversions,
Data so as to be carried to wireless induction signal implement encoding and decoding.The wireless induction letter usually captured from first node NODE1
Number it is sinusoidal signal, the A/D conversion functions of processor 100 need to convert sinusoidal signal or amplified sinusoidal signal
Into digital quantity, detection sinusoidal signal is usually that continuous detection is multiple in practical applications, and lowest detection is only for hundreds of times more smart
Accurate detection scheme, the purpose of detection be exactly in order to：Detect sinusoidal signal function A*sin (ω * t) peak value i.e. positive peak and
Then valley, that is, negative peak also needs to calculate peak value to the amplitude between valley, so-called amplitude is equal to positive peak here
Absolute value adds the absolute value of negative peak.When those surprisingly capture or be coupled to other approach the noise of first node NODE1
Level is often lower than the threshold value that we set, but when we detect that the peak value of the SIN function of wireless induction signal arrives
When the amplitude of valley is not less than predetermined threshold value, we can just calculate this wireless sense being sensed at processor 100
Induction signal is the authentic and valid wireless signal sended over from other external electronic equipments；Conversely, when we detect wirelessly
When the threshold level that the Amplitude Ratio of the peak value of the SIN function of inductive signal to valley is set is also low, we just have reason to believe this
A wireless induction signal captured should be noise, should be considered as invalid and false wireless induction signal.At this
In application, this is that near field wireless telecommunications are prevented and one of the effective measures that reduce error code, and this mode cost is very low, it is not required that
Using thinned demodulator circuit, the wireless communication distance of this near field wireless telecommunications is about tens centimetres, this distance is for hand
The mobile equipment for holding formula is enough, such as when to the solar panel configuration address of photovoltaic plant, as long as handheld device is close
Solar panel can establish communication.Processor 100 can be accurately detected the presence or absence of wireless induction signal namely true and false feelings
Under condition, then the data carried to wireless induction signal are decoded and are just easy to, this is related to communication protocol, the prior art
Communication protocol is suitable for the application.
Referring to Fig. 1, when aerial coil LR and inductance capacitance CR are considered wireless signal sending module, needing to meet will be handled
One signal sending end of device 100 is coupled to the control terminal of a switching tube M.Wherein switching tube M is, for example, field-effect transistor,
Such as drain electrode is connected to first node NODE1 to the first input/output terminal of switching tube M and the second input/output terminal such as source electrode is connected to ginseng
Examine ground GND.As option, the signal sending end of processor 100 can connect one between the grid control terminal of switching tube M
Coupled capacitor CS and as option, can also connect an electricity between the grid control terminal of switching tube M and reference ground GND
Hinder RS.The drive signal of saltus step between low and high level that the signal sending end of processor 100 is conveyed is coupled to switching tube M's
Grid, processor 100 using aerial coil LR and inductance capacitance CR when sending wireless carrier signal：Driving switch pipe M is connecing
It is logical to switch between shutdown, thereby, aerial coil LR and inductance capacitance CR are considered as an oscillating circuit and generate outside electromagnetism spoke
The wireless carrier signal penetrated.Processor 100 generate expected frequency of oscillation directly control the resonance coils of LR-CR oscillating circuits into
Row oscillation, the drive signal for being coupled to transistor M grids is programmable square wave.The wireless two-way communication arrived involved in the application
Technology scheme such as can be based on but be not limited to similar amplitude shift keying technology ASK, can also use such as half-duplex
Communication plan.
Referring to Fig. 1, processor 100 controls the oscillating circuit of LR containing aerial coil and inductance capacitance CR to external emission electromagnetism
It needs to establish suitable communication protocol, such as during transmission data when the wireless carrier signal of radiation：First oscillating circuit is allowed to send
Then one high level pulse allows oscillating circuit to send the high level arteries and veins of a significance bit in back to back first preset period of time
It rushes and maintains high level in the first preset period of time, then allow oscillation electric in the second preset period of time after the first preset period of time
Road sends low level signal, subsequently continuously transmits several subpulses again and forms a byte, this byte is waited to be tieed up after terminating
It holds the signal transmitted by oscillating circuit and maintains a third preset period of time in low level again.As the mode for receiving signal, processing
Device 100 can first judge the low level time of wireless induction signal, if the time that low level continues is more than some time limit then
Start and receive program, and detecting high level pulse（First high level pulse that oscillating circuit is sent）It slightly delays afterwards just
Start to read data, continuously read the byte data that above-mentioned several subpulses are formed, and byte data is preserved.
Wherein processor 100 can first judge the time that the low level of wireless induction signal continues before a complete byte is read,
The time that low level continues just starts more than some time limit receives program, and the time limit that in general this low level continues is than above-mentioned
Third preset period of time it is slightly short but more slightly longer than the second preset period of time, be all Millisecond.Notice that communication protocol here is only to make
For optional example, suitable communication protocol is suitable for the application to the arbitrary prior art in the middle.
Referring to Fig. 1, second node NODE2 is coupled to the divider node NODE3 of divider and is applied at second node NODE2
The partial pressure value provided by divider is provided.The voltage reception that resistance RI1 and underlying resistance RI2 is connected to divider is put on divider
Between holding NODE0 and reference ground GND, power supply VCC is transported to voltage receiving terminal NODE0.And in voltage receiving terminal NODE0 and ginseng
It examines and is connected with the first capacitance CI1, and also in the upper divider node for putting resistance RI1 and underlying resistance RI2 interconnection between ground GND
The second capacitance CI2 is connected at NODE3 between reference ground GND.
Referring to Fig. 1, one or more overvoltage protection is connected between first node NODE1 and second node NODE2
Device, over-voltage protection element here for example can be that the anode of electrostatic ESD overvoltage protection diode D, diode D are connected to
Two node NODE2 and cathode is connected to first node NODE1.As option, in addition it can in first node NODE1 and ginseng
It examines and is connected with third capacitance CO, the first capacitance CI1 and the capacitance of the second capacitance CI2 and third capacitance CO can between ground GND
With roughly equal, but the first capacitance CI1 and the capacitance of the second capacitance CI2 and third capacitance CO are often inductance capacitance CR
Capacitance 103Multiplying power or so.Referring to Fig. 1, the first end of switching tube M is connected to first node NODE1 and second end is connected to ginseng
Ground GND is examined, the low and high level pulse signal that processor 100 exports is transported to the control of switching tube M by a coupled capacitor CS
End, connection-shutdown of switching tube M and turns on the repetitive operation of shutdown and can cause the oscillation of oscillating circuit again.As optional
, can also connect between the grid control terminal G of switching tube M and reference ground GND there are one resistance RS.As option, go back
Resistance RR can be connected between first node NODE1 and second node NODE2, pays attention to resistance RR and aerial coil LR and sense
It is connection relation in parallel to answer their threes of capacitance CR, and resistance RR is option and nonessential item.Pay attention to first node NODE1 and
It is connected with third capacitance CO between reference ground GND floating not having to, resistance RR can also be abandoned.
Referring to Fig. 2, aerial coil LR and the inductance capacitance being connected in parallel between first node NODE1 and second node NODE1
CR, first node NODE1 are coupled to the signal receiving end P2 of processor 100, judge aerial coil LR and sensing by processor 100
The presence or absence of wireless induction signal wireless induction signal that capacitance CR is detected and be true in wireless induction signal
The data of wireless induction signal are further decoded under the premise of real signal, the prior art are belonged to the decoding of wireless signal, no
It gives and repeating.And the signal sending end P0 of processor 100 is coupled to control terminal G and the switching tube M connections of a switching tube M
Between first node NODE1 and reference ground GND, such as its drain-source correspondence is respectively coupled to NODE1 and GND, processor 100
The driving switch when sending wireless carrier signal wireless carrier signal using aerial coil LR and inductance capacitance CR
Pipe M switches between turning on and off, and switching tube M performs the repetitive operation of the On-Off-On, substantially can be by aerial coil LR
And inductance capacitance CR is considered as oscillating circuit and generates the wireless carrier signal of outside electromagnetic radiation.We must in LR-CR circuits
It must consider a problem：It wherein can hereafter introduce metal line/stitching that spiral antenna is arranged on printed circuit board, industry
It is by first layout design and then again the scale copper on etching circuit board or deposited metal to prepare metal line, metal line
Fineness/namely line width it is extremely subtle and be easily broken off, and current technique level is also easy to cause gold
Belonging to wiring, there is a situation where breakpoints, this is that we do not allow to occur, therefore how to detect the aerial coil LR of plane thread shape
It is the inevitable choice for ensureing product yield that breakpoint, which whether occurs,.The scheme specifically detected is：One self-test signal of processor 100
End P1 by resistance RT be connected to first node NODE1 namely resistance RT be connected to self-test signal end P1 and first node NODE1 it
Between.And in the program for performing self-test, the self-test pulse that self-test signal end P1 is exported is coupled processor 100 by resistance RT
To first node NODE1.The stage that self-test pulse is exported in processor 100 is equivalent to, is mainly received by the signal of processor 100
Hold P2（It is coupled to first node NODE1 simultaneously）Detect the voltage condition at first node NODE1 and according to voltage condition by
This judges that aerial coil LR whether there is breakpoint.
Referring to Fig. 3, it is complete that multiple plane spiral coil LR-1 to LR-4 compositions one are disposed on printing board PCB
Whole aerial array, in one embodiment, spiral coil LR-1 to LR-4 are arranged as in a row side by side namely their big positions
In on straight line.Spiral coil LR is substantially made of a series of concentric ring, this series of concentric ring can be in figure
The circle not shown can also be rectangle in figure or other arbitrary polygons, and coil antenna can be with from structure
Learn, a series of concentric ring of spiral coil LR according to these rings of the sequence by inner loop to external rings radius（Or ring
Width/height/perimeter）It is gradually incremented by successively：Ring if round can then declare be ring radius gradually be incremented by；If
It is the ring of square or rectangular it can be said that corresponding width（Or length）Gradually it is incremented by, could also say that the ring of inside at this time
Perimeter to the ring in outside is gradually incremented by；If rule or irregular polygon, it can be said that the ring of inside arrives outside
The perimeter of ring is gradually incremented by.In the alternative embodiment of Fig. 3, a pair of of respective head end T1 of coil LR-2 and LR-3 are connected with each other,
Namely the head end T1 of coil LR-2 is connected with the head end T1 of coil LR-3.In addition the respective tail end of a pair of coil LR-2 and LR-3
T2 is respectively coupled to the tail end T2 of the tail end T2 of the coil LR-1 in outside, coil LR-4：Namely the tail end T2 of coil LR-2 is connected to line
The tail end T2 of circle LR-1, the tail end T2 of coil LR-3 are connected to the tail end T2 of coil LR-4, wherein on position relationship, a pair of line
Circle LR-2 and LR-3 is located at the inside of the coil LR-3 and coil LR-4 in outside.In fact, here be only a pair of coil LR-2 with
LR-3, can be with multipair or multi-pole coils LR-2 and LR-3 situation：A tail end among arbitrary level-one coil LR-2 and LR-3
T2 is defined as the first equivalent end and another tail end T2 is defined as the second equivalent end, then multistage（LR-2 and LR-3）In, after arbitrary
First equivalent end of level-one is connected to the second equivalent end of adjacent foregoing stage, and the first first order（LR-2 and LR-3）First etc.
Effect end is connected to the tail end T2 of the one coil LR-1 in outside, end afterbody（LR-2 and LR-3）The second equivalent end be connected to outside
The tail end T2 of one coil LR-4.Pad PAD1 is connected to the head end T1 and pad PAD2 of aerial coil LR-1 and is connected in Fig. 3
The head end T1 of aerial coil LR-4.Pad PAD1 is connected to the tail end T2 and pad PAD2 of aerial coil LR and is connected to day in Fig. 4
The head end T1 of line coil LR.
Referring to Fig. 4, be slightly different with Fig. 3, the LR-1 to LR-4 of series connection substituted using spiral coil LR, only this
When the areas that are occupied on PCB relative to an individual coil LR-1 of individual spiral coil LR need to expand to enhance signal
Sense capture ability.Perhaps the area that spiral coil LR-1 to LR-4 is occupied on PCB is essentially equal to individual spiral coil
The area that LR is occupied on PCB, it is clear that some ring is rectangle in spiral coil LR, and the length value of its this ring is remote
Much larger than width value.For example, aerial coil uses the plane thread antenna of printing/setting on a printed circuit, plane
The metal line trace prepared on circuit boards is usually used in helical antenna planar spiral antenna, and advantage is into
This is low and saves wiring board wiring space and signal capture ability is strong, but there are the drawbacks of be metal on printed wire
Breakpoint broken-point easily occurs for the antenna that wiring is formed, and this breakpoint is subtle and artificial check is come.In order to by
The signal receiving end P2 of processor 100 detects the voltage condition at first node NODE1 to judge that LR with the presence or absence of breakpoint, needs
Processor 100 actively exports the self-test pulse of low and high level all the way：We can observe that, self-test pulse is from self-test in fig. 2
Signal end P1 is exported, and resistance RT is connected between self-test signal end P1 and first node, when processor 100 is in self-test signal
When holding P1 output self-test pulses, the voltage jump range value V in the case where breakpoint occurs for antenna LR at first node NODE1UP1
The voltage jump range value V in the case of breakpoint at first node NODE1 does not occur with antenna LRUP2It is different.
Referring to Fig. 5, the stage of self-test pulse, the voltage V of self-test pulse are exported in processor 100IMPLUSECurve scheming
In for 117, for a pulse from low transition to high level：TIME1 moment self-test pulses from low transition to
High level and then high level continue moment TIME2 again, and TIME2 moment self-test pulses jump to low electricity from high level return
It is flat.Referring to Fig. 5, the voltage condition of first node NODE1 is detected by processor 100 and thereby judges that aerial coil whether there is
The scheme of breakpoint is：Self-test pulse 117 any one from rising edge（The TIME1 moment）To failing edge（The TIME2 moment）'s
In period：Forward voltage amplitude V if breakpoint occurs for aerial coil LR at first node NODE1UP1Than aerial coil LR not
The forward voltage amplitude V at first node NODE1 when breakpoint occursUP2It will be more greatly.If set a reference voltage level
VREF, then processor 100 detecting forward voltage amplitude VUP1It is easy to judge to deposit when bigger than the reference voltage level VREF
In the situation of breakpoint, on the contrary, processor 100 is detecting forward voltage amplitude VUP2It was easy to than reference voltage level VREF hours
Judge that there is no breakpoint situations.The forward voltage amplitude V sayed here in Figure 5UP1And VUP2Actually first node
It can be directly resulted at first node NODE1 by V at the time of self-test rising edge of a pulse at NODE1IMPLUSECausing charging can reach
Voltage max, and forward voltage amplitude VUP1And VUP2Lead to first node NODE1 at the time of self-test pulse falling edge
Place is by VIMPLUSEReduction initiation slightly discharge, but aerial coil LR is disconnected and the situation of non-disconnection leads to first node
The amplitude that the voltage of NODE1 can reach is different：Sawtooth curve 118 represents that self-test pulse 117 exists when antenna LR is disconnected
Any one is from rising edge（The TIME1 moment）To failing edge（The TIME2 moment）Period in charging at first node NODE1 become
Change situation；Sawtooth curve 119 represent antenna LR when not disconnecting self-test pulse 117 at any one from rising edge（During TIME1
It carves）To failing edge（The TIME2 moment）Period in charging situation at first node NODE1, it is found that sawtooth curve 118
Amplitude VUP1Significantly than the amplitude V of sawtooth curve 119UP2Greatly.
Referring to Fig. 2, the means and method of another self-test are to detect the voltage fluctuation of second node NODE2, in self-test arteries and veins
In each period that punching 117 persistently exports：If the voltage of second node NODE2 is the voltage more balanced, and the second section
As soon as the maximum value of the voltage of point NODE2 is no more than a upper limit value and the minimum value of its voltage is not less than a lower limiting value,
It is to say that the voltage ripple of NODE2 is smaller, then the other other termination mouthfeel of processor 100 measures the voltage of second node NODE2
Situation is not it may determine that aerial coil LR has breakpoint.Conversely, in each period equally persistently exported in self-test pulse 117：
If the voltage of second node NODE2 is not the ratio of saltus step above and below the voltage of the voltage namely second node NODE2 more balanced
It is more severe, and the maximum value of the voltage of second node NODE2 has been more than the electricity of above-mentioned upper limit value and second node NODE2
The minimum value of pressure is also lower than above-mentioned lower limiting value, and the voltage ripple of node NODE2 is larger, then other other of processor 100
Port senses the voltage condition of second node NODE2 it may determine that breakpoint event has occurred in aerial coil LR.
Above by the content of the description and the appended drawings, the exemplary embodiments of the specific structure of specific embodiment are given,
Foregoing invention proposes existing preferred embodiment, but these contents are not intended as limiting to.For those skilled in the art
Speech, after reading above description, various changes and modifications undoubtedly will be evident.Therefore, appended claims should be regarded as
Cover the true intention of the present invention and whole variations and modifications of range.Any and all equivalence in Claims scope
Range and content are all considered as still belonging to the intent and scope of the invention.
Claims (10)
1. a kind of wireless communication electronic device, which is characterized in that including：
The aerial coil and inductance capacitance being connected in parallel between the first and second nodes；
First node is coupled to the signal receiving end of a processor, judges that aerial coil and inductance capacitance detect by processor
The presence or absence of wireless induction signal and decoding wireless induction signal data；And the signal sending end of processor is coupled to one
The control terminal of the switching tube and switching tube is connected between first node and reference ground, processor are utilizing aerial coil and sense
Driving switch pipe switches between turning on and off when answering capacitance transmission wireless carrier signal, and aerial coil and inductance capacitance are considered as
Oscillating circuit and the wireless carrier signal for generating outside electromagnetic radiation.
2. wireless communication electronic device according to claim 1, which is characterized in that second node is coupled to a divider
Divider node and a partial pressure value being provided by divider is provided at second node.
3. wireless communication electronic device according to claim 2, which is characterized in that resistance and underlying electricity are put on divider
Resistance is connected between voltage receiving terminal and reference ground, and power supply is transported to voltage receiving terminal；And in voltage receiving terminal and reference ground
Between be connected with the first capacitance, and also connected between reference ground at the upper divider node for putting resistance and underlying resistive interconnections
There is the second capacitance.
4. wireless communication electronic device according to claim 1, which is characterized in that connected between the first and second nodes
There are one or multiple over-voltage protectors.
5. wireless communication electronic device according to claim 1, which is characterized in that connect between first node and reference ground
It is connected to third capacitance.
6. wireless communication electronic device according to claim 1, which is characterized in that the low and high level pulse of processor output
Signal is transported to the control terminal of switching tube by a coupled capacitor.
7. wireless communication electronic device according to claim 1, which is characterized in that in the control terminal and reference ground of switching tube
Between connection there are one resistance.
8. wireless communication electronic device according to claim 1, which is characterized in that connected between the first and second nodes
There are one resistance.
9. wireless communication electronic device according to claim 1, which is characterized in that processor is to the wireless induction that receives
The sine wave of signal carries out conversion of the analog quantity to digital quantity, captures the crest value of sine wave and valley value and by peak value to valley
Between amplitude be compared with predetermined threshold value, only when amplitude is higher than predetermined threshold value, wireless induction signal is just considered as and receives
Effective wireless induction signal, otherwise judge be invalid wireless induction signal.
10. a kind of self checking method of the oscillating circuit based in wireless communication electronic device described in claim 1, feature exist
In a self-test signal end of the processor is connected to first node, and processor is in self-test signal by a resistance
Exported self-test pulse-couple is held to first node；The method includes：
In the stage of processor output self-test pulse, the voltage condition of first node is detected by processor and thereby judges antenna
Coil whether there is breakpoint：Within any one period from rising edge to failing edge of the self-test pulse：If processor
Judge that breakpoint occurs for the then aerial coil also bigger than the reference voltage of setting of the voltage magnitude at first node；If processor judges
Voltage magnitude at first node is also smaller than the reference voltage of setting, and breakpoint does not occur for aerial coil.
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| WO2023138133A1 (en) * | 2022-01-19 | 2023-07-27 | 华为技术有限公司 | Network system and communication device |
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