CN106779017A - A kind of compound visa card and its communication means - Google Patents
A kind of compound visa card and its communication means Download PDFInfo
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- CN106779017A CN106779017A CN201611242276.6A CN201611242276A CN106779017A CN 106779017 A CN106779017 A CN 106779017A CN 201611242276 A CN201611242276 A CN 201611242276A CN 106779017 A CN106779017 A CN 106779017A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/073—Special arrangements for circuits, e.g. for protecting identification code in memory
- G06K19/07309—Means for preventing undesired reading or writing from or onto record carriers
- G06K19/07345—Means for preventing undesired reading or writing from or onto record carriers by activating or deactivating at least a part of the circuit on the record carrier, e.g. ON/OFF switches
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07775—Antenna details the antenna being on-chip
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Finance (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of compound visa card and its communication means, compound visa card includes：Antenna is waken up with the first microwave receiving of different angular acceptance microwave signals and the second microwave receiving wakes up antenna, the first detecting circuit and the second detecting circuit for carrying out detection to microwave signal, microwave transmitting and receiving chip, microwave transmitting and receiving antenna and MCU module.Communication means is used for the communication of routing information, including：Same microwave signal is received with first angle and second angle respectively；After microwave signal difference ripple inspection, send to microwave transmitting and receiving chip so that microwave transmitting and receiving chip is communicated according to microwave signal wake-up MCU；The reception gain predominant direction of first angle makes up the reception gain inferior position direction of the second angle.The present invention wakes up the microwave signal that antenna is sent with different angular acceptance mark point antennas by two microwave receivings, and the deficiency that signal receives income inferior position direction is made up by mutually receiving income predominant direction with signal, realizes waking up omnidirectional's sexual satisfaction of sensitivity.
Description
Technical field
The present invention relates to intelligent transportation field, and in particular to a kind of compound visa card of communication optimization and its communication party
Method.
Background technology
Ambiguity path identifying system is a subsystem of expressway network toll.Freeway net is intricate, high
Often there is different Path selections, the mesh of CPC (Compound Pass Card are combined visa card) between fast entrance and exit
Be exactly the concrete form path for judging vehicle, it is convenient to manage at a high speed to realize accurate charge.
Its implementation method is dot system to be known in the road restocking bidding that there are two opposite sex, based on 5.8GHzDSRC technologies
Realize the ambiguity path identification of ETC vehicles and MTC vehicles.MTC vehicles get Path Recognition card at expressway access, i.e.,
Compound visa card (abbreviation CPC cards), by setting up during identification point on the way, identification point day bundle of lines routing information is written to vehicle
It is placed on the CPC in car.When vehicle sails out of high speed, CPC cards are returned in charge station, system can read the access information in CPC cards
And routing information, and computational costs.
Vehicle in high speed has fireballing feature, and the time by identification point antenna is extremely short, and this is just to CPC cards and day
The communication distance and call duration time of line propose requirement higher.And car owner is after CPC cards are received, it is possible to card can be put
In the car anywhere, on equidistant front windshield remote position below seat, the decay to aerial signal is larger, and
The placed angle of CPC cards is random.In view of this, the microwave of CPC cards wakes up and receives and needs to reach sensitivity higher, together
When CPC card microwave antennas directional diagram should accomplish omnidirectional.
At present, the technology of integrated chip can ensure wake-up sensitivity and the receiving sensitivity of CPC, but microwave antenna
Angle is difficult to accomplish that omni-directional is especially good.
CPC cards belong to battery supply set, and dormancy power consumption usually is very low, in the case of low-power consumption, integrated core
Receiving sensitivity (- 80dbm or so) when wake-up sensitivity (- 60dbm) of piece is than normal work is far short of what is expected.It is micro- on CPC cards
Wave antenna is packaged in card, and it has gain predominant direction and gain inferior position direction, is illustrated in figure 4 one and is encapsulated in
Microwave on CPC cards wakes up antenna schematic diagram, and X-axis is that, perpendicular to the direction of antenna oscillator, Y-axis is the side parallel to antenna oscillator
To, the antenna is preferable in the gain that the X-direction of diagram and the Z-direction of plane where vertical antenna receive microwave signal,
Be gain predominant direction, and diagram Y direction receive microwave signal gain it is poor, be gain inferior position direction (on the same day
The gain predominant direction of line and the sensitivity difference in gain inferior position direction can reach more than 10dbm).Therefore, in CPC card dormancy
There are the feelings that the larger and antenna microwave signal of decay of antenna microwave signal is received along CPC card gain inferior positions direction in Shi Ruo
Condition, then may cause the CPC cards of dormancy not to be waken up, it is impossible to be normally carried out routing information communication.Therefore, compared to receiving sensitivity
For, if solve to improve the wake-up sensitivity of CPC cards, and optimization wakes up the directional diagram of antenna, it is even more important, it is also more in distress
Degree.
Not high to solve the problems, such as above-mentioned wake-up sensitivity, prior art one is that the reception based on integrated chip is sensitive
Degree can reach higher level design.Due to the scope of receiving sensitivity -80db or so, under normal operating conditions, even if micro-
Certain one side gain of wave antenna is smaller, it is also possible to meet the requirement of the reception microwave signal of CPC cards.Therefore timing wake-up is generated
Scheme, i.e., after car owner receives CPC cards, the microwave transmitting and receiving chip on card just start it is autonomous at regular intervals wake up once,
CPC cards is in normal operating conditions, go to receive microwave signal, if receiving microwave signal, microwave chip with receiving sensitivity
Go to wake up MCU, the interaction of open communication again.So, CPC cards replace waking up sensitivity with receiving sensitivity, even if microwave antenna
Gain inferior position direction, it is also possible to meet the high requirement for waking up sensitivity of CPC cards.
The average power consumption of the program is larger, and with the signal of identification point antenna send between be separated with larger relation.Because microwave
Keep the time for receiving to have to be larger than the signal transmission interval of identification point antenna after chip timing wake-up, just can guarantee that each timing
What wake-up can receive a frame identification point antenna issues data frame.So, if the signal transmission interval of identification point antenna is larger,
Then the power consumption of CPC cards can be bigger.Actual test data display, when the interval of timing wake-up is 1s, kept after wake-up receive when
Between when being 20ms, the average power consumption of CPC cards is more than 40uA.Again because the limitation of battery capacity, such stand-by power consumption, it is difficult to protect
The card CPC card use times of 5 years.
Prior art be second wake up antenna by after detection export signal on increase operation amplifier circuit,
Make signal enhancing, be re-fed into microwave integrated chip, can so improve the wake-up sensitivity of CPC cards, it is ensured that gain inferior position direction
Also highly sensitive requirement can be met.But this method high cost, power consumption is big, and the directive sensitivity of CPC cards institute is all obtained
Raising is arrived, the original sensitivity met on that desired direction is also improved a lot, easily causes false wake-up.
The content of the invention
For the problems of in the prior art, it is an object of the invention to provide a kind of cost is relatively low, power consumption increases
Less, PCB cloth plate suqare increases less compound visa card and its communication means, to solve to receive income inferior position because of microwave antenna
Direction and microwave signature attenuation cause to wake up that sensitivity is low, omni-directional is poor, resting state cannot normal wakeup carry out routing information
The problem of communication.
To achieve the above object of the invention, technical scheme is as follows：
A kind of compound visa card, including：
First microwave receiving wakes up antenna, for receiving microwave signal with first angle；
Second microwave receiving wakes up antenna, for receiving same microwave signal with second angle；
First detecting circuit, is examined for waking up antenna to the first microwave receiving with the microwave signal that first angle is received
Ripple；
Second detecting circuit, is examined for waking up antenna to the second microwave receiving with the microwave signal that second angle is received
Ripple；
Microwave transmitting and receiving chip, receives the microwave signal after detection, and waking up MCU module according to microwave signal is communicated；
Microwave transmitting and receiving antenna, signal when being communicated for MCU module according to microwave transmitting and receiving chip receives/send microwave
Signal；
MCU module, for being communicated when microwave transceiver module receives microwave signal；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.
Further, above-mentioned compound visa card, first detecting circuit includes the first detector diode, first inspection
It is integrally disposed that ripple diode wakes up antenna with first microwave receiving；
Second detecting circuit includes the second detector diode, and second detector diode connects with second microwave
Receive wake-up antenna integrally disposed.
Further, above-mentioned compound visa card, first detector diode is integrated in first microwave receiving and wakes up
On the impedance matching point of antenna, the input impedance conjugate impedance match of the impedance of the impedance matching point and first detector diode；
Second detector diode is integrated in second microwave receiving and wakes up on the impedance matching point of antenna, the impedance
The input impedance conjugate impedance match of the impedance of match point and second detector diode.
Further, above-mentioned compound visa card, the output of the first detecting circuit and the output of the second detecting circuit are directly closed
It is connected with the input of microwave transmitting and receiving chip for rear all the way.
Further, above-mentioned compound visa card, the output of the first detecting circuit and the output of the second detecting circuit are by fortune
It is connected with the input of microwave transmitting and receiving chip after calculating amplifier combining.
Further, above-mentioned compound visa card, antenna is waken up with the first microwave receiving that first angle receives microwave signal,
And the angle between the second microwave receiving wake-up antenna of same microwave signal is received with second angle is 60 ° to 120 °.
Further, above-mentioned compound visa card, antenna is waken up with the first microwave receiving that first angle receives microwave signal,
And the angle between the second microwave receiving wake-up antenna of same microwave signal is received with second angle is 90 °.
Further, above-mentioned compound visa card, also includes：
Non- wiring circle, for driving MCU detecting circuits, is additionally operable to the non-communication for connecing chip；
It is non-to connect chip, for storing access information file；
MCU detecting circuits, MCU module is waken up when leaving magnetic field for non-wiring circle, is additionally operable to be in magnetic in non-wiring circle
Charged the battery when in；
MCU module, is additionally operable to read the non-access information file for connecing chip when being waken up by MCU detecting circuits, opens/closes
Microwave transmitting and receiving chip；
Microwave transmitting and receiving chip, the signal for being additionally operable to respond MCU module is turned on and off, according to microwave in the state of unlatching
The MCU module that signal wakes up is communicated；
Battery module, for being powered and microwave transmitting and receiving chip power supply to MCU module.
Meanwhile, technical scheme additionally provides a kind of communication means of compound visa card, for routing information
Communication, comprises the following steps：
(1) microwave receiving that two different angles are set in compound visa card wakes up antennas, respectively with first angle and
Second angle receives same microwave signal；
(2) after the microwave signal difference ripple inspection that the microwave signal and second angle that first angle is received are received, send to micro-
Ripple transceiving chip；
(3) microwave transmitting and receiving chip wakes up MCU and is communicated according to the microwave signal for receiving；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.
Further, the angle that the first microwave receiving wakes up that antenna and the second microwave receiving waken up between antenna is 60 °-
120°。
Further, the angle that the first microwave receiving is waken up between antenna and the second microwave receiving wake-up antenna is 90 °.
Further, the communication means of above-mentioned compound visa card, the microwave signal and second angle that first angle is received connects
The microwave signal of receipts is integrated into by operational amplification circuit after ripple is examined be sent to all the way microwave transmitting and receiving chip respectively.
The invention has the advantages that：
1st, the present invention is waken up antenna and is believed with the microwave that different angular acceptance mark point antennas send by two microwave receivings
Number, the deficiency that signal receives income inferior position direction is made up by mutually receiving income predominant direction with signal, realize waking up sensitive
Omnidirectional's sexual satisfaction of degree；
2nd, detector diode and microwave receiving wake-up antenna are integrally disposed, simplify antenna and detector diode match circuit
Design；
3rd, detector diode is integrated in the impedance matching point that microwave receiving wakes up antenna, it is ensured that the impedance of antenna and diode
Input impedance conjugate impedance match, it is maximum to ensure diode detection efficiency, wake up sensitivity also highest；
4th, the direct combining of two way microwave signals is sent to microwave transmitting and receiving chip, and output signal the higher person, cost is lower, compares
The power consumption of background technology scheme increases less, and PCB cloth plate suqare increases are smaller；
5th, it is obtained in that more preferable waveform is exported by the scheme of operational amplifier combining.
Brief description of the drawings
Fig. 1 is the device layout figure of the present invention one specific embodiment of compound visa card.
Fig. 2 is the present invention one structured flowchart of specific embodiment of compound visa card.
Fig. 3 is the flow chart of the compound visa card communication means of the present invention.
Fig. 4 is the structural representation of the microwave receiving wake-up antenna of compound visa card.
In above-mentioned accompanying drawing, the 1, first microwave receiving wakes up antenna；2nd, the second microwave receiving wakes up antenna；3rd, the first detection
Pipe；4th, the second detection tube；5th, microwave transmitting and receiving chip；6th, microwave transmitting and receiving antenna；7th, MCU module；8th, non-wiring circle；9th, it is non-to connect core
Piece.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Embodiment 1
As depicted in figs. 1 and 2, the invention provides a kind of compound visa card, it is adaptable to the ambiguity path of freeway net
Identifying system, including：
First microwave receiving wakes up antenna 1, for receiving microwave signal with first angle；
Second microwave receiving wakes up antenna 2, receives same micro- for waking up antenna with second angle and the first microwave receiving
Ripple signal；
First detecting circuit 3, is carried out for waking up antenna to the first microwave receiving with the microwave signal that first angle is received
Detection；
Second detecting circuit 4, is carried out for waking up antenna to the second microwave receiving with the microwave signal that second angle is received
Detection；
Microwave transmitting and receiving chip 5, receives the microwave signal after detection, is communicated according to the MCU module that microwave signal wakes up；
Microwave transmitting and receiving antenna 6, signal when being communicated for MCU module according to microwave transmitting and receiving chip receives/sends micro-
Ripple signal；
MCU module 7, for being communicated when microwave transceiver module receives microwave signal；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.At this
In embodiment, realize that the first angle and a complementary concrete scheme of second angle gain predominant direction are connect with first angle
The first microwave receiving for receiving microwave signal wakes up antenna, and is called out with the second microwave receiving that second angle receives same microwave signal
Angle between awake antenna is 90 °.And in practical application, the angle can be 60 ° to 120 ° arbitrarily angled.
In the present embodiment, the first microwave receiving wakes up antenna and the second microwave receiving wakes up antennas orthogonal and intersects, and second
Microwave receiving wake-up antenna sensitivity in Y-axis is poor, is made up by the X-axis sensitivity of the first microwave receiving wake-up antenna, two
Individual antenna has complementary advantages.The wake-up sensitivity for making CPC cards overall is optimal, and realizes waking up omnidirectional's sexual satisfaction of sensitivity.It is real
Border PCB should be noted that the distance between two antennas more preferably greater than half wavelength when being laid out, to reduce the interference between two antennas
(apart from more than 2.5cm between two antennas in the present embodiment).
First detecting circuit includes the first detector diode (as shown in Figure 1), first detector diode and described the
It is integrally disposed that one microwave receiving wakes up antenna；Second detecting circuit includes the second detector diode, second detector diode
It is integrally disposed antenna to be waken up with second microwave receiving.Advantage of this is that simplifying antenna and detector diode matching electricity
The design on road.
It is according to conventional design that antenna and detector diode is integrated, it is necessary to the impedance of antenna and diode is respectively matched to
50 ohm cascade up again afterwards.So, impedance matching section can bring extra insertion loss, reduce the wake-up sensitivity of OBU.
In the present embodiment, the first detector diode is integrated in first microwave receiving and wakes up on the impedance matching point of antenna, the impedance
The input impedance conjugate impedance match of the impedance of match point and first detector diode；Second detector diode is integrated in described
Two microwave receivings are waken up on the impedance matching point of antenna, the input of the impedance of the impedance matching point and second detector diode
Impedance conjugate impedance match.So can diode detection efficiency it is maximum, it is integrated after wake up sensitivity also highest.
In the present embodiment, the first detecting circuit output and the second detecting circuit output be directly combined into all the way after with it is micro-
The input connection of ripple transceiving chip.What the first detecting circuit and the second detecting circuit were exported is the ripple of the lower frequency in-phase position after detection
Shape signal, and because detecting circuit input impedance is high, two signals can directly be superimposed, exported after combining be in two signals compared with
Gao Zhe.And gain predominant direction and gain inferior position direction due to first angle and second angle are complementary, would not also produce because
Same microwave signal is simultaneously along two gain inferior position directions of angle by reception condition, that is to say, that the compound of the present embodiment is led to
When certain microwave signal is received in row clamping, a relatively good microwave signal must be had export and give microwave transmitting and receiving chip, so as to solve
Indivedual directions wake up the too low problem of sensitivity.Respectively from two antennas by waveform and phase between the low frequency signal after detection
Position is identical, and amplitude is different.Meanwhile, the input impedance of detection tube is very big, and the output signal of the first detection may not flow into the second detection
In circuit, so that will not the output of itself that decayed because of the access of the second detecting circuit.Similarly, the second detecting circuit is defeated
Going out also will not be influenceed and be reduced by the first detecting circuit.
Except the above-mentioned modules for pavement marker point antenna communication, the compound visa card of the present embodiment is also wrapped
Include：
Non- wiring circle 8, for driving MCU detecting circuits, is additionally operable to the non-communication for connecing chip；
It is non-to connect chip 9, for storing access information file；
MCU detecting circuits (Fig. 1 is not shown), MCU module is waken up when leaving magnetic field for non-wiring circle, is additionally operable to be connect non-
Charged the battery when coil is in magnetic field；
MCU module, is additionally operable to read the non-access information file for connecing chip when being waken up by MCU detecting circuits, opens/closes
Microwave transmitting and receiving chip；
Microwave transmitting and receiving chip, the signal for being additionally operable to respond MCU module is turned on and off, according to microwave in the state of unlatching
The MCU module that signal wakes up is communicated；
Battery module (Fig. 1 is not shown), for being powered and microwave transmitting and receiving chip power supply to MCU module.
The CPC cards of the present embodiment usually in a dormant state, and microwave transmitting and receiving chip (SKY6606) power down (are not turned on
Microwave wakes up), make card power consumption near minimum.MCU detecting circuits (13.56M) need not be powered, and coil drive is connect by non-.
When CPC cards are in magnetic field, MCU detecting circuits output high level can be used for charging battery module.Card from
When opening magnetic field, MCU detecting circuits output low level, this level trailing edge signal wakes up MCU module, and MCU module is waken up
Afterwards, read the non-access information file for connecing chip by 7816 interfaces, determine whether access information, if any, open simultaneously
Initialization microwave transmitting and receiving chip (SKY6606), is allowed to be operated under microwave wake-up states；If conversely, without access information,
Close microwave transmitting and receiving chip (SKY6606).
In the present embodiment, in view of PCB surface product is limited, therefore scheme using non-wiring circle takes into account the non-chip that connects
Communication, the charging of battery module and the wake-up of MCU module.Certainly, also can be using two technical schemes of coil, a special use
In the non-communication for connecing chip, another connects antenna to reduce to charge for the charging of battery module and the wake-up of MCU module to non-
Influence.In the present embodiment, for ease of management, MCU module be able to can be passed through by ADC direct detection cell voltages, magnitude of voltage
It is non-to connect card reader reading, it is easy to staff to screen the card of cisco unity malfunction.
Embodiment 2
The compound visa card general idea that the present embodiment is provided is substantially the same manner as Example 1, and difference is the first inspection
The output of wave circuit and the output of the second detecting circuit are connected by the input after operational amplifier combining with microwave transmitting and receiving chip.
So, it is possible to realize that reaching more preferable waveform under conditions of CPC cards stand-by power consumption and cost are allowed exports.
The method that the above-mentioned compound visa card that the present embodiment is provided is communicated, idiographic flow is as shown in figure 3, including following
Step：
The microwave receiving that two different angles are set in compound visa card wakes up antenna, respectively with first angle and second
The same microwave signal of angular acceptance, S1；
After the microwave signal difference ripple inspection that the microwave signal and second angle that first angle is received are received, send to microwave and receive
Hair chip, S2；
Microwave transmitting and receiving chip wakes up MCU and is communicated according to the microwave signal for receiving, S3；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.
When the compound visa card in using embodiment 2, what the microwave signal and second angle that first angle is received were received
Microwave signal will also be integrated into by operational amplification circuit and be just sent to microwave transmitting and receiving chip all the way after ripple inspection respectively.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification are belonged to the model of the claims in the present invention and its equivalent technology
Within enclosing, then the present invention is also intended to comprising these changes and modification.
Claims (14)
1. a kind of compound visa card, it is characterised in that including：
First microwave receiving wakes up antenna, for receiving microwave signal with first angle；
Second microwave receiving wakes up antenna, for receiving same microwave signal with second angle；
First detecting circuit, detection is carried out for waking up antenna to the first microwave receiving with the microwave signal that first angle is received；
Second detecting circuit, detection is carried out for waking up antenna to the second microwave receiving with the microwave signal that second angle is received；
Microwave transmitting and receiving chip, receives the microwave signal after detection, and waking up MCU module according to microwave signal is communicated；
Microwave transmitting and receiving antenna, signal when being communicated for MCU module according to microwave transmitting and receiving chip receives/sends microwave letter
Number；
MCU module, for being communicated when microwave transceiver module receives microwave signal；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.
2. visa card is combined as claimed in claim 1, it is characterised in that：First detecting circuit includes the pole of the first detection two
Pipe, it is integrally disposed that first detector diode wakes up antenna with first microwave receiving；
Second detecting circuit includes the second detector diode, and second detector diode is called out with second microwave receiving
Antenna of waking up is integrally disposed.
3. visa card is combined as claimed in claim 2, it is characterised in that：First detector diode is integrated in described first
Microwave receiving is waken up on the impedance matching point of antenna, and the impedance of the impedance matching point hinders with the input of first detector diode
Anti- conjugate impedance match；
Second detector diode is integrated in second microwave receiving and wakes up on the impedance matching point of antenna, the impedance matching
The impedance of point and the input impedance conjugate impedance match of second detector diode.
4. visa card is combined as claimed in claim 1, it is characterised in that：The output of the first detecting circuit and the second detecting circuit
Output be directly combined into all the way after be connected with the input of microwave transmitting and receiving chip.
5. visa card is combined as claimed in claim 1, it is characterised in that：The output of the first detecting circuit and the second detecting circuit
Output be connected by the input after operational amplifier combining with microwave transmitting and receiving chip.
6. the compound visa card as described in claim 1-5 is any, it is characterised in that：First microwave receiving wakes up antenna and second
The angle that microwave receiving is waken up between antenna is 60 ° -120 °.
7. visa card is combined as claimed in claim 6, it is characterised in that：First microwave receiving wakes up antenna and the second microwave connects
It is 90 ° to receive the angle waken up between antenna.
8. the compound visa card as described in claim 1-5 is any, it is characterised in that also include：
Non- wiring circle, for driving MCU detecting circuits, is additionally operable to the non-communication for connecing chip；
It is non-to connect chip, for storing access information file；
MCU detecting circuits, MCU module is waken up when leaving magnetic field for non-wiring circle, is additionally operable in non-wiring circle is in magnetic field
When charge the battery；
Battery module, for being powered and microwave transmitting and receiving chip power supply to MCU module.
9. visa card is combined as claimed in claim 8, it is characterised in that：Described MCU module, is additionally operable to by MCU detections electricity
The non-access information file for connecing chip is read on road when waking up, open/close microwave transmitting and receiving chip.
10. visa card is combined as claimed in claim 9, it is characterised in that：Described microwave transmitting and receiving chip is additionally operable to respond MCU
The signal of module is turned on and off, and the MCU module waken up according to microwave signal in the state of unlatching is communicated.
A kind of 11. communication means of compound visa card, comprise the following steps：
(1) microwave receiving that two different angles are set in compound visa card wakes up antenna, respectively with first angle and second
The same microwave signal of angular acceptance；
(2) after the microwave signal difference ripple inspection that the microwave signal and second angle that first angle is received are received, send to microwave and receive
Hair chip；
(3) microwave transmitting and receiving chip wakes up MCU and is communicated according to the microwave signal for receiving；
The reception gain predominant direction of the first angle makes up the reception gain inferior position direction of the second angle.
The communication means of 12. compound visa cards as claimed in claim 11, it is characterised in that：First microwave receiving wakes up antenna
And second microwave receiving wake up antenna between angle be 60 ° -120 °.
The communication means of 13. compound visa cards as claimed in claim 12, it is characterised in that：First microwave receiving wakes up antenna
And second microwave receiving wake up antenna between angle be 90 °.
The communication means of the 14. compound visa card as described in any one of claim 11 to 12, it is characterised in that：First angle connects
The microwave signal that the microwave signal and second angle of receipts are received is integrated into after ripple inspection by operational amplification circuit sends all the way respectively
Give microwave transmitting and receiving chip.
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