CN105590073A - Radio frequency identification system reader - Google Patents
Radio frequency identification system reader Download PDFInfo
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- CN105590073A CN105590073A CN201410552331.6A CN201410552331A CN105590073A CN 105590073 A CN105590073 A CN 105590073A CN 201410552331 A CN201410552331 A CN 201410552331A CN 105590073 A CN105590073 A CN 105590073A
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- frequency
- system reader
- radio
- selective network
- recognition system
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Abstract
The invention discloses a radio frequency identification system reader, which comprises a principal controller, a frequency selective network, an antenna connected with the frequency selective network and a photovoltaic cell, wherein the principal controller is connected with an input device and a display module; the photovoltaic cell is connected with a power management module; and the power management module provides power for the frequency selective network and the principal controller. According to the radio frequency identification system reader of the invention, presence or absence of a responder in a large range can be identified; if the responder is in a monitoring range, a clear indication is given, four preset codes of the responder are read, a check code is added in the software, and thus the versatility and the reliability of wireless transmission are improved.
Description
Technical field
The present invention relates to electronic circuit field, particularly, relate to a kind of radio-frequency recognition system reader.
Background technology
Current various intelligent control system be unable to do without the transmission of data message. Wherein, Wireless Data Transmission is the novel transmission means that is different from traditional wire transmission, and system does not need transmission cable and with low cost. For single-chip microcomputer mates corresponding wireless communication interface circuit, can realize the Wireless Data Transmission between single-chip microcomputer or between single-chip microcomputer and microcomputer. Conventional wireless communication interface circuit, is the circuit taking radio transmitting and receiving chip as core at present. In the time of transfer of data, in Software for Design, take necessary interference protection measure and identification measure, can effectively avoid interference, reach satisfied communication efficiency. But because prior art is designed program separately to single equipment, make existing wireless communications module versatility poor.
Summary of the invention
For solving the poor technical problem of existing wireless communications module versatility, the invention discloses a kind of radio-frequency recognition system reader.
Radio-frequency recognition system reader of the present invention, comprise main control computer, described main control computer is connected with input equipment and display module, also comprise frequency-selective network and the antenna being connected with frequency-selective network, and photovoltaic cell, described photovoltaic cell is connected with power management module, and described power management module is frequency-selective network and main control computer power supply.
Preferably, described antenna is coupling coil loop aerial.
Concrete, described main control computer is LM567.
Concrete, described input equipment is keyboard, described display device is charactron or LCDs.
Concrete, described power management module is TPS65130.
Radio-frequency recognition system reader of the present invention, can in a big way, identify having or not of responder, if have responder in monitoring range, provide clear and definite instruction and read 4 default codings of responder, and can increase check code and improve from software versatility and the reliability of wireless transmission.
Brief description of the drawings
Fig. 1 is a kind of detailed description of the invention schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done to detailed description further, but embodiments of the present invention are not limited to this.
Radio-frequency recognition system reader of the present invention, comprise main control computer, described main control computer is connected with input equipment and display module, also comprise frequency-selective network and the antenna being connected with frequency-selective network, and photovoltaic cell, described photovoltaic cell is connected with power management module, and described power management module is frequency-selective network and main control computer power supply.
As shown in Figure 1, in the time having responder near reader, antenna in reader has formed a LC antiresonant circuit, its frequency is identical with the tranmitting frequency of responder, like this under electromagnetic excitation, LC resonance circuit produces resonance, thereby makes high-frequency signal flow in reader the input for the LM567 of demodulation. Restituted signal and the above-mentioned single-chip microcomputer code signal of output are reverse, finally by crossing single-chip microcomputer decoding output display.
LM567 has modulation and demodulation dual-use function. Its signal of reconciling out can directly be identified by single-chip microcomputer, and is sent to charactron and shown by single-chip microcomputer.
Antenna is a kind of transducer. When transmitting, the high frequency electric of emitter is converted into space electromagnetic wave; When reception, the electromagnetic wave of intercepting and capturing is converted to high frequency electric sends into receiver from space. The radio-frequency recognition system of small-power, short-distance wireless transceiver be applied to to(for) one of design, Antenna Design is pith wherein. Good antenna system can make communication distance reach optimum state. The kind of antenna is a lot, and different application needs different antennas. In small-power, short-range rfid system, need reliable communications, cheap antenna system, coupling coil ring Shape antenna is the one of relatively commonly using.
The voltage and current of ring Shape antenna point of excitation is connected by the input impedance encircling, i.e. V=Z*R0. In order to assess the electric capacity Z for antenna resonance, the input impedance of ring Shape antenna must be determined; Equally, in order to assess antenna efficiency and radiation impedance, the ohmic loss in ring-like conductor and other ohmic losses also must be determined. The frequency range using according to reader, is used diverse ways aerial coil to be connected to the output of reader transmitter. By power match, aerial coil is directly connected to power output stage, or be fed to aerial coil by coaxial cable.
As mentioned above, can realize preferably the present invention.
Claims (5)
1. radio-frequency recognition system reader, comprise main control computer, described main control computer is connected with input equipment and display module, also comprise frequency-selective network and the antenna being connected with frequency-selective network, and photovoltaic cell, described photovoltaic cell is connected with power management module, and described power management module is frequency-selective network and main control computer power supply.
2. radio-frequency recognition system reader according to claim 1, is characterized in that, described antenna is coupling coil loop aerial.
3. radio-frequency recognition system reader according to claim 1, is characterized in that, described main control computer is LM567.
4. radio-frequency recognition system reader according to claim 1, is characterized in that, described input equipment is keyboard, and described display device is charactron or LCDs.
5. radio-frequency recognition system reader according to claim 1, is characterized in that, described power management module is TPS65130.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552331.6A CN105590073A (en) | 2014-10-19 | 2014-10-19 | Radio frequency identification system reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410552331.6A CN105590073A (en) | 2014-10-19 | 2014-10-19 | Radio frequency identification system reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105590073A true CN105590073A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410552331.6A Pending CN105590073A (en) | 2014-10-19 | 2014-10-19 | Radio frequency identification system reader |
Country Status (1)
| Country | Link |
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| CN (1) | CN105590073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107392071A (en) * | 2017-06-27 | 2017-11-24 | 苏州沃古斯电子商务有限公司 | A kind of novel ultra-high frequency reader |
-
2014
- 2014-10-19 CN CN201410552331.6A patent/CN105590073A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107392071A (en) * | 2017-06-27 | 2017-11-24 | 苏州沃古斯电子商务有限公司 | A kind of novel ultra-high frequency reader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160518 |
|
| WD01 | Invention patent application deemed withdrawn after publication |