CN201111063Y - Wireless card reader - Google Patents
Wireless card reader Download PDFInfo
- Publication number
- CN201111063Y CN201111063Y CNU2007200543893U CN200720054389U CN201111063Y CN 201111063 Y CN201111063 Y CN 201111063Y CN U2007200543893 U CNU2007200543893 U CN U2007200543893U CN 200720054389 U CN200720054389 U CN 200720054389U CN 201111063 Y CN201111063 Y CN 201111063Y
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- circuit
- card
- wireless
- reader
- card reader
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Abstract
The utility model is a wireless card reader which comprises a card reader device and a receiver device; the card reader device is composed of a read-write circuit which connects a power circuit with a control circuit and a wireless transmitting circuit; the receiver device comprises a wireless receiving circuit which connects the power circuit with the control circuit and a signal coding output circuit. The wireless card reader can read the card number and transmit the card number information to the receiving terminal correctly, and then transmit the card number information to a control host computer through the Wiegand format so that the wired device in the prior art is replaced and the control host computer in the prior art is not needed to be changed. The transmission distance between the card reader device and the receiver device can be more than 10 meters; thereby, the installation is very convenient and the cost and difficulty of the project construction are reduced.
Description
Technical field
The utility model relates to contactless information recognition device, and is especially relevant in a kind of card reader by radio frequency signal transmission information.
Background technology
Perfect day by day along with non-contact ID (identifying information) card, IC-card, electronic label technology more and more is applied to gate control system, attendance checking system, managing system of car parking, patrol system.In actual applications, card reader and main control system majority are installed in diverse location, do not wait at a distance of several meters or tens meters, connect with cable between the two, need punching wiring on the wall during engineering construction, especially card reader is installed in the gateway usually, have relatively high expectations to attractive in appearance, this just increases many difficulty and cost to engineering construction.
The utility model content
The utility model discloses a kind of wireless card reading device, adopt wireless communication mode to make the read-write of card and separating of access control implementation space, thereby reduce engineering construction cost and difficulty.
To achieve these goals, the technical solution adopted in the utility model is: a kind of wireless card reading device, comprise reader device and receiving trap two parts, reader device is made up of the Card Reader circuit and the wireless transmission circuit that connect power circuit and control circuit, wherein, the core of control circuit is cpu chip (IC3), cpu chip (IC3) is provided with the control stitch, the Card Reader circuit includes interconnective operational amplifier (IC1), amplification shaping device (Q6～Q9), detuner (D3, D4), reverser (Q1), switch (Q5) and antenna (J4), wireless transmission circuit contains resonator (U3, Q10, Q11) and antenna (L3), wireless transmission circuit and Card Reader circuit are provided with and the corresponding terminals of cpu chip control stitch;
Receiving trap then comprises wireless receiving circuit and the signal encoding output circuit that connects power circuit and control circuit, wherein, the core of receiving trap control circuit is cpu chip (IC3), cpu chip (IC3) is provided with the control stitch, and receiving circuit includes receiving demodulation device (IC1, Q8, Q9) and connects by the signal wire RE control stitch corresponding with cpu chip (IC3).
More excellent is that the Card Reader circuit of described reader device can be the Card Reader circuit of EM card or the Card Reader circuit of MF1 card.
More excellent is that the signal encoding output circuit of described receiving trap is at least one-channel signal coding output circuit.
Further, be connected with storer in the control circuit of described receiving trap.
Further, the power circuit of described reader device connects stabilized voltage supply or battery.
The utility model wireless card reading device adopts wireless communication mode to make the Card Reader of card and separating of access control implementation space, thereby reduces engineering construction cost and difficulty.
Description of drawings
Fig. 1 is the utility model reader device circuit diagram;
Fig. 2 is the utility model receiving trap circuit diagram;
Fig. 3 is the utility model reader device block diagram;
Fig. 4 is the utility model single channel receiving trap block diagram;
Fig. 5 is the utility model No. 4 receiving trap block diagrams.
Embodiment
Below in conjunction with accompanying drawing the utility model is specified.
A kind of wireless card reading device is made up of electronic control part and mechanical part, comprises reader device and receiving trap two parts.
Fig. 1 is the reader device circuit diagram, and Fig. 3 is the reader device block diagram.Reader device is made up of the Card Reader circuit and the wireless transmission circuit that connect power circuit and control circuit.
The core of control circuit is cpu chip IC3, is used to control the operation of card reader.Cpu chip IC3 is provided with a plurality of control stitch.Operational amplifier IC1, amplification shaping device Q6～Q9, detuner D3, D4, reverser Q1, switch Q5, antenna J4 and other electronic components connect to form the Card Reader circuit.Wireless transmission circuit contains resonator U3, Q10, Q11 and antenna L3.During Card Reader, at first open the Card Reader circuit, CPU is by the on off state of signal wire PWR control Q5.When PWR was low level, Q5 was open-minded, the Card Reader circuit working, and CPU is the square wave of 125KHz by signal wire INPUT to the Q9 output frequency simultaneously, amplifies through Q6, Q7, Q8 to be shaped as sine wave, J1 launches from antenna, for release provides power supply.J1 receives the signal of release simultaneously, through obtaining square-wave signal after the device demodulation such as D3, D4, IC1, pass to Q1 through signal wire DATA3 (the 7th pin of IC1), the 14th pin of CPU is passed to by signal wire DATA in anti-phase back, obtains the card number of induction zone internal information card after the CPU decoding.If read card number, PWR is output as high level, Q5 closes, close the Card Reader circuit, start wireless transmission circuit, CPU can be by the switch of signal wire SPK control Q4, for wireless transmission circuit provides power supply, simultaneously coded signal is transferred to the radio frequency transtation mission circuit by signal wire COM, the radio frequency transtation mission circuit is launched through after the coded modulation number of reader device (can solidify 13 2 ary codes in the card reader control circuit) and release card number from antenna L3.
Fig. 2 comprises wireless receiving circuit and the signal encoding output circuit that connects power circuit and control circuit for receiving trap.
The receiving trap control circuit also is provided with cpu chip IC3, and cpu chip IC3 has the control stitch, and receiving circuit includes electronic components such as operational amplifier IC1, Q8 and Q9 and forms the receiving demodulation device.In receiving circuit when work,, the radiofrequency signal that reader device is sent is demodulated to square-wave signal, passes to CPU by RE signal wire (1 pin of concatenation operation amplifier IC1 and 14 pin of IC3) and decodes, and extracts information such as the identifier of card reader and card number.The J4 that is connected on the cpu chip IC3 is an on-off circuit, is used to select the duty of CPU.During connection, record sign indicating number state is selected in expression; Represent normal operating conditions during disconnection.The record sign indicating number of receiving trap, i.e. the number of prerecord reader device, purpose is to prevent to use in the same area many cover the utility model to produce interference each other.Under special circumstances, only use a cover wireless card reading device if can guarantee a zone, receiving trap can omit storer so, does not reexamine the reader device number during use, directly exports card number.Under record sign indicating number state, receiving trap receives the information that card reader is sent by radio receiver circuit, and decodes, and obtains the number of reader device, then with the number storage of reader device in reservoir.Storer can be preserved several numbers.
Fig. 2 chips IC2 is a non-volatile memory chip, links to each other with CPU IC3 by signal wire WP, SCL, SDA, is used to store the information such as identifier of card reader.Y1 is a crystal oscillator, the clock signal of 6MHz is provided for CPU IC3 ' by signal wire X1, X2.J2, J5 are light emitting diodes, and by the state of signal wire LED1, LED2 control light emitting diode, BUZ is a hummer to CPU IC3 respectively, and CPU IC3 is by the state of signal wire P17 control hummer.J6 is the connectivity port.CPU IC3 converts the card number that receives to only root signal, by signal wire HOLD, DATA0, DATA1 output.V1 is a power supply three-terminal voltage-stabilizing chip, the direct supply of J6 input is converted to 5 volts of stable direct currents, for the each several part circuit provides power supply.
Fig. 4 is the utility model single channel receiving trap block diagram.The single channel receiving trap is an embodiment of the present utility model.
When receiving trap in user mode following time, receiving trap receives the information that reader device sends by radio receiver circuit, and decode, obtain the number of reader device and the card number of release, work by control circuit then, whether the reader device number that inspection is received is identical with number in the reservoir, if inequality, then do not do any output; If corresponding reader device number, then the card number of release is transferred to main control system according to root (Wiegand) form only by output circuit.
Fig. 5 is No. 4 receiving trap block diagrams.No. 4 receiving traps are identical with the principle of work of single channel receiving trap, and different is that receiving trap must contain storer and many barss coding output circuit.During the record sign indicating number, the number of a plurality of (this example is 4) reader device is kept in the storer respectively.During use, whether the reader device number that then relatively reads one by one is identical with the number of reservoir, has identically if detect, and then obtains the release card number and the signal encoding output circuit by correspondence outputs to main control system; If not then do not work on.For example, the 1st number of storing in the reader device number that is subjected to and the reservoir is identical, just sends by the 1 tunnel signal encoding output circuit; If identical with the 2nd number of storing in the reservoir, just send by the 2 tunnel signal encoding output circuit, so analogize.Wireless card reading device behind the sign indicating number of passing by on one's way, this is novel can to use many covers in the same area, does not disturb mutually.
The utility model wireless card reading device can accurately send to receiving terminal to card number information after reading card number, send to main control system by root form only then, thereby replaced original wireline equipment, but original main control system need not to make any modification.The transmission of the signal between reader device and the receiving trap can have the distance above ten meters, thereby convenient greatly the installation reduced engineering construction cost and difficulty.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (7)
1. a wireless card reading device comprises reader device and receiving trap two parts, it is characterized in that, described reader device is made up of the Card Reader circuit and the wireless transmission circuit that connect power circuit and control circuit, wherein,
The core of described control circuit is cpu chip (IC3), cpu chip (IC3) is provided with the control stitch, described Card Reader circuit includes interconnective operational amplifier (IC1), amplification shaping device (Q6～Q9), detuner (D3, D4), reverser (Q1), switch (Q5) and antenna (J4), described wireless transmission circuit contains resonator (U3, Q10, Q11) and antenna (L3), and wireless transmission circuit and Card Reader circuit are provided with and the corresponding terminals of cpu chip control stitch;
Described receiving trap then comprises wireless receiving circuit and the signal encoding output circuit that connects power circuit and control circuit, wherein,
The core of described receiving trap control circuit is cpu chip (IC3), and cpu chip (IC3) is provided with the control stitch, and described receiving circuit includes receiving demodulation device (IC1, Q8, Q9) and connects by the signal wire RE control stitch corresponding with cpu chip (IC3).
2. wireless card reading device according to claim 1 is characterized in that the Card Reader circuit of described reader device can be the Card Reader circuit of EM card.
3. wireless card reading device according to claim 1 is characterized in that the Card Reader circuit of described reader device can be the Card Reader circuit of MF1 card.
4. as claim 1 to 3 wireless card reading device as described in each, it is characterized in that the signal encoding output circuit of described receiving trap is at least one-channel signal coding output circuit.
5. as claim 1 to 3 wireless card reading device as described in each, it is characterized in that, be connected with storer in the control circuit of described receiving trap.
6. as claim 1 to 3 wireless card reading device as described in each, it is characterized in that the power circuit of described reader device connects stabilized voltage supply.
7. as claim 1 to 3 wireless card reading device as described in each, it is characterized in that the power circuit of described reader device connects battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200543893U CN201111063Y (en) | 2007-07-20 | 2007-07-20 | Wireless card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200543893U CN201111063Y (en) | 2007-07-20 | 2007-07-20 | Wireless card reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111063Y true CN201111063Y (en) | 2008-09-03 |
Family
ID=39895601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200543893U Expired - Fee Related CN201111063Y (en) | 2007-07-20 | 2007-07-20 | Wireless card reader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201111063Y (en) |
-
2007
- 2007-07-20 CN CNU2007200543893U patent/CN201111063Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080903 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |