CN206147681U - Bluetooth RFID read write line - Google Patents
Bluetooth RFID read write line Download PDFInfo
- Publication number
- CN206147681U CN206147681U CN201620988666.7U CN201620988666U CN206147681U CN 206147681 U CN206147681 U CN 206147681U CN 201620988666 U CN201620988666 U CN 201620988666U CN 206147681 U CN206147681 U CN 206147681U
- Authority
- CN
- China
- Prior art keywords
- signal
- bluetooth
- coupled
- circuit
- throw switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
The utility model discloses a bluetooth RFID read write line, including MCU to and the radio frequency identification circuit, bluetooth module and the power management circuit that are coupled with MCU respectively, still including being coupled in bluetooth module's radio frequency amplifier circuit, this radio frequency amplifier circuit when the bluetooth module receipt is sent out with the number of delivering letters, carries out power amplification to radiofrequency signal and handles respectively for bluetooth RFID read write line's signal transmission distance is farther.
Description
Technical field
The utility model is related to the communications field, more specifically, it relates to a kind of Bluetooth RFID reader writer.
Background technology
Bluetooth RFID reader writer, by RFID in combination with Bluetooth technology, the data of RFID read-write will be arrived by Bluetooth transmission
On wireless handheld PDA, smart mobile phone, computer, then transferred data to by 3G network from the terminals such as mobile phone again and remotely taken
Business device, greatly facilitates the storage and management of data, be especially suitable for logistics and supplies management, mail package process, document management,
The every field such as animal identification mark, electronic entrance ticket and the use of mobile office.
Such as notification number is the Chinese patent of CN202854848U, discloses a kind of bluetooth Wireless RFHD tags recognition dress
Put, including RFID read-write controller, the terminal device used by user and the rechargeable battery powered for RFID read-write controller,
RFID read-write controller is communicated between terminal device by bluetooth communication, RFID read-write controller be read RFID
Communicated by RFID wireless communication units between label；Bluetooth communication and RFID wireless communication units are read with RFID
Writing controller connects；Rechargeable battery connects with battery charger, and battery charger is controlled by RFID read-write controller, can
Rechargeable battery and battery charger connect with RFID read-write controller, battery charger and battery charging input interface phase
Connect.The utility model simple structure, small volume, input cost are low and easy to operate, using effect is good, carry rechargable power supplies,
With wireless blue tooth communication and RFID read-write function.
It is well known that, generally, the transmission range of Bluetooth signal is limited, if user takes on terminal device
Where farther out, terminal device just cannot lead to not carry out remotely control with RFID read-write controller by Bluetooth communication
The operation of RFID read-write.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of Bluetooth RFID reader writer, tool
The characteristics of having long distance of signal transmission.
For achieving the above object, the utility model provides following technical scheme：
A kind of Bluetooth RFID reader writer, including MCU, and respectively with MCU coupling rfid circuit, bluetooth module and
Electric power management circuit；Also include being coupled to the radio frequency amplifying circuit of bluetooth module；The radio frequency amplifying circuit includes：
Directional coupler, is coupled to bluetooth module, for when bluetooth module has output signal, being coupled out radio frequency letter
Number；
Power-sensing circuit, is coupled to directional coupler, for when the radiofrequency signal is detected, output linearity it is straight
Stream voltage；
Level shifting circuit, is coupled to power-sensing circuit, for the DC voltage to be converted to into level signal；
Transmission circuit, with signal receiving channel and signal transmission channel, the signal receiving channel and signal transmitting are led to
Road is each configured with receiving amplifying circuit and transmitting amplifying circuit；The input and letter of the signal receiving channel of the transmission circuit
The output end of number transmission channel is coupled by one first single-pole double-throw switch (SPDT) with antenna, and the signal of the transmission circuit receives logical
The output end in road and the input of signal transmission channel are coupled by one second single-pole double-throw switch (SPDT) with directional coupler；
Wherein, first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT) are coupled to level shifting circuit, to respond
In the level signal controlling to make switching action.
Preferably, the reception amplifying circuit includes low-noise amplifier.
Preferably, it is described transmitting amplifying circuit include couple successively small signal amplifier, radio frequency driver amplifier and
Final stage power amplifier.
Preferably, the small signal amplifier is using the realization of monolithic microwave integrated chip, its model ERA-5SM.
Preferably, the radio frequency driver amplifier is using the realization of power gain chip, its model AH102.
Preferably, the final stage power amplifier adopts the MOSFET power amplifier chips of N-channel to realize, its model RQA0009.
Preferably, model HMC546MS8G of first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT).
Compared with prior art, the utility model has the advantages that：By above technical scheme so that bluetooth module can connect
Receive fainter Bluetooth signal, and the Bluetooth signal for sending can transmit it is farther, so as to realize increasing signal transmission away from
From purpose.
Description of the drawings
Fig. 1 is the module principle figure of Bluetooth RFID reader writer in the utility model；
Fig. 2 is the module principle figure of radio frequency amplifying circuit in the utility model；
Fig. 3 is the connection circuit diagram of level shifting circuit and the first single-pole double-throw switch (SPDT) in the utility model；
Fig. 4 is the circuit diagram of final stage power amplifier in the utility model.
Reference：100th, radio frequency amplifying circuit；200th, amplifying circuit is received；300th, amplifying circuit is launched；400th, level
Change-over circuit；500th, the first single-pole double-throw switch (SPDT)；600th, final stage power amplifier.
Specific embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail, but reality of the present utility model
The mode of applying is not limited only to this.
With reference to Fig. 1, a kind of Bluetooth RFID reader writer, including MCU, and rfid circuit, the indigo plant for coupling with MCU respectively
Tooth module and electric power management circuit；Also include being coupled to the radio frequency amplifying circuit 100 of bluetooth module.
With reference to Fig. 2, radio frequency amplifying circuit 100 includes directional coupler, power-sensing circuit, level shifting circuit 400, receipts
Power Generation Road, the first single-pole double-throw switch (SPDT) 500 and the second single-pole double-throw switch (SPDT).
Wherein, directional coupler is coupled to bluetooth module, and when bluetooth module is in emission state, output signal is through fixed
Very faint radiofrequency signal is coupled out to coupler, it is linear that the radiofrequency signal exports 0.5～1.8V by power-sensing circuit detection
DC voltage.
With reference to Fig. 3, level shifting circuit 400 is made up of triode Q1 and FET Q2, the conversion of linear DC voltage
Into the logically high low level signals of 5V, for controlling the first single-pole double-throw switch (SPDT) 500 and the conducting of the second single-pole double-throw switch (SPDT) and closing
Close.Wherein, model HMC546MS8G of the first single-pole double-throw switch (SPDT) 500 and the second single-pole double-throw switch (SPDT).Work as chip
When controlling pin Vctl and being input into for high level of HMC546MS8G, RFC is connected with TX pins；Conversely, when Vctl is that low level is defeated
Fashionable, RFC is connected with RX.
When bluetooth module is in reception state, without coupled signal, detection output voltage is 0, and now triode Q1 is in
Cut-off state, the grid voltage of FET Q2 is high level (5V), and FET Q2 is output as in cut-off state, now logic
Low level (0V).
With reference to Fig. 2, transmission circuit includes receiving amplifying circuit 200 and transmitting amplifying circuit 300, wherein, receive and amplify electricity
Road 200 adopts low-noise amplifier.
Transmitting amplifying circuit 300 includes small signal amplifier, radio frequency driver amplifier and the final stage power amplifier for coupling successively
600；Wherein, small signal amplifier is using the realization of monolithic microwave integrated chip, its model ERA-5SM；Radio frequency driver amplifier
Realized using power gain chip, its model AH102；With reference to Fig. 4, final stage power amplifier 600 adopts the MOSFET power amplifier cores of N-channel
Piece A1 realizations, its model RQA0009.
Claims (7)
1. a kind of Bluetooth RFID reader writer, including MCU, and rfid circuit respectively with MCU couplings, bluetooth module and electricity
Power management circuits；It is characterized in that, also including the radio frequency amplifying circuit for being coupled to bluetooth module；The radio frequency amplifying circuit includes：
Directional coupler, is coupled to bluetooth module, for when bluetooth module has output signal, being coupled out radiofrequency signal；
Power-sensing circuit, is coupled to directional coupler, for when the radiofrequency signal is detected, the direct current of output linearity
Pressure；
Level shifting circuit, is coupled to power-sensing circuit, for the DC voltage to be converted to into level signal；
Transmission circuit, divides with signal receiving channel and signal transmission channel, the signal receiving channel and signal transmission channel
It is not configured with reception amplifying circuit and transmitting amplifying circuit；The input and signal of the signal receiving channel of the transmission circuit is sent out
The output end for penetrating passage is coupled by one first single-pole double-throw switch (SPDT) with antenna, the signal receiving channel of the transmission circuit
The input of output end and signal transmission channel is coupled by one second single-pole double-throw switch (SPDT) with directional coupler；
Wherein, first single-pole double-throw switch (SPDT) and the second single-pole double-throw switch (SPDT) are coupled to level shifting circuit, with response to institute
State level signal to control to make switching action.
2. Bluetooth RFID reader writer according to claim 1, is characterized in that, the reception amplifying circuit is put including low noise
Big device.
3. Bluetooth RFID reader writer according to claim 1, is characterized in that, the transmitting amplifying circuit includes coupling successively
Small signal amplifier, radio frequency driver amplifier and final stage power amplifier.
4. Bluetooth RFID reader writer according to claim 3, is characterized in that, the small signal amplifier adopts monolithic microwave
Integrated chip realization, its model ERA-5SM.
5. Bluetooth RFID reader writer according to claim 3, is characterized in that, the radio frequency driver amplifier is increased using power
Beneficial chip realization, its model AH102.
6. Bluetooth RFID reader writer according to claim 3, is characterized in that, the final stage power amplifier is using N-channel
The realization of MOSFET power amplifier chips, its model RQA0009.
7. Bluetooth RFID reader writer according to claim 1, is characterized in that, first single-pole double-throw switch (SPDT) and second is singly
Model HMC546MS8G of double-pole double throw switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988666.7U CN206147681U (en) | 2016-08-29 | 2016-08-29 | Bluetooth RFID read write line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620988666.7U CN206147681U (en) | 2016-08-29 | 2016-08-29 | Bluetooth RFID read write line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206147681U true CN206147681U (en) | 2017-05-03 |
Family
ID=58627180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620988666.7U Expired - Fee Related CN206147681U (en) | 2016-08-29 | 2016-08-29 | Bluetooth RFID read write line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206147681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463862A (en) * | 2017-08-30 | 2017-12-12 | 合肥新文远信息技术有限公司 | A kind of contactless RFID reader |
| CN113225100A (en) * | 2021-05-21 | 2021-08-06 | 湖南基石通信技术有限公司 | Radio frequency module for WiFi wireless ad hoc network and control method thereof |
-
2016
- 2016-08-29 CN CN201620988666.7U patent/CN206147681U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107463862A (en) * | 2017-08-30 | 2017-12-12 | 合肥新文远信息技术有限公司 | A kind of contactless RFID reader |
| CN113225100A (en) * | 2021-05-21 | 2021-08-06 | 湖南基石通信技术有限公司 | Radio frequency module for WiFi wireless ad hoc network and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102663456B (en) | One is active radio frequency identification system closely | |
| CN105099527B (en) | A kind of passive NFC communication interface with independent energy reception antenna | |
| CN101436261B (en) | 2.45 GHz semi-active radio frequency identification label and signal processing method thereof | |
| CN100576770C (en) | The control device of array antenna | |
| CN202331539U (en) | High-frequency passive RFID (Radio Frequency Identification) analog front end circuit | |
| CN202394254U (en) | Intelligent card, near field communication device and terminal device | |
| CN101833686A (en) | Semi-active label | |
| CN204334968U (en) | A kind of Big Dipper short message communication and the Big Dipper/GPS locating terminal | |
| CN206147681U (en) | Bluetooth RFID read write line | |
| CN104732254B (en) | Radio-frequency identification reader/writer | |
| CN102622645B (en) | Radio frequency front end of radio frequency identification (RFID) electronic tag | |
| CN107657195A (en) | A kind of three-in-one control system based on NFC, RFID and bluetooth | |
| CN204597957U (en) | A kind of high integration intercom power amplifier front end module | |
| CN201765599U (en) | Desk type/portable high-frequency RFID reader-writer with USB interface and Bluetooth interface | |
| CN105897637B (en) | Super high frequency radio frequency recognition read-write machine transmitter architecture based on power modulation mode | |
| CN111147109B (en) | Wireless energy-carrying communication system with scattering communication and voltage monitoring functions | |
| CN202110567U (en) | Ultrahigh-frequency RFID (Radio Frequency Identification) reader-writer and corresponding mobile terminal | |
| CN202720662U (en) | RFID reader-writer module for handheld device and handheld device thereof | |
| CN202584154U (en) | Radio frequency device integrating 13.56M and 2.4G cards | |
| CN209044619U (en) | RFID scanner with multi-channel communication circuitry | |
| CN206506524U (en) | A kind of signal sending and receiving equipment | |
| CN101295368B (en) | Semi-passive active electronic label | |
| CN105007127A (en) | Level shift driving power detection radio frequency module for smart home | |
| CN105654152B (en) | A kind of super high frequency radio frequency recognition read-write machine of adaptive multi-communication protocol | |
| CN205091764U (en) | Radio frequency identification reading -writing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20210829 |