CN212009581U - Storage circuit for improving working efficiency of RFID reader-writer - Google Patents
Storage circuit for improving working efficiency of RFID reader-writer Download PDFInfo
- Publication number
- CN212009581U CN212009581U CN202020692231.4U CN202020692231U CN212009581U CN 212009581 U CN212009581 U CN 212009581U CN 202020692231 U CN202020692231 U CN 202020692231U CN 212009581 U CN212009581 U CN 212009581U
- Authority
- CN
- China
- Prior art keywords
- resistor
- capacitor
- transistor
- diode
- pin
- 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
- 230000003139 buffering effect Effects 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 129
- 239000003381 stabilizer Substances 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Amplifiers (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The utility model relates to a storage circuit for improving RFID read write line work efficiency belongs to the RFID read write line field, and a storage circuit for improving RFID read write line work efficiency includes: the device comprises a signal buffering module, a signal transmitting module and a negative pressure source output module; the signal transmitting module comprises a rectifying and filtering circuit; the signal buffer module is used for buffering when the signals in the memory are exported, detecting data signals and matching input impedance and output impedance of front and rear stages of the signals; when the signal transmitting module reads, the data in the storage circuit is transmitted and radio frequency signals are adopted for transmission; when the negative pressure source output module outputs a radio frequency signal, the output signal can be effectively ensured to be stable by utilizing the output of the negative pressure power supply; the utility model discloses an utilize radio frequency output data signal, choose the negative power supply for use simultaneously at operating voltage and drive to can effectively promote the work efficiency and the stability of read write line.
Description
Technical Field
The utility model relates to a storage circuit for improving RFID read write line work efficiency belongs to the RFID read write line field.
Background
The RFID reader-writer is also called as an RFID reader, namely, radio frequency identification, automatically identifies a target object and obtains related data through a radio frequency identification signal, manual intervention is not needed, a high-speed moving object can be identified, a plurality of RFID labels can be identified at the same time, and the operation is rapid and convenient. The RFID reader-writer is of a fixed type and a handheld type, and the handheld RFID reader-writer comprises a low frequency, a high frequency, an ultrahigh frequency, an active type and the like.
In the RFID reader in the prior art, when a plurality of RFID readers operate at the same frequency and are within the same operating range, the radio frequency card may receive signals of different devices, which causes reading blockage, resulting in unstable information reading, thereby affecting the operating efficiency.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: a memory circuit for improving the working efficiency of an RFID reader/writer is provided to solve the above-mentioned problems.
The technical scheme is as follows: a memory circuit for improving the operating efficiency of an RFID reader, comprising:
the signal buffer module is used for buffering when the signals in the memory are exported, detecting data signals and matching input impedance and output impedance of front and rear stages of the signals;
when the signal transmitting module reads, the data in the storage circuit is transmitted and radio frequency signals are adopted for transmission;
when the negative pressure source output module outputs a radio frequency signal, the output signal can be effectively ensured to be stable by utilizing the output of the negative pressure power supply.
In a further embodiment, the signal buffering module comprises: the circuit comprises a resistor R1, a resistor R7, a resistor R6, a capacitor C2, a resistor R4, a diode D1, a resistor R5, a triode Q1, a triode Q2, a resistor R3, a capacitor C1, a triode Q3 and a resistor R2; wherein, the base of the transistor Q1 is connected to one end of the resistor R4, the collector of the transistor Q1 is connected to one end of the resistor R5 and the collector of the transistor Q3, the emitter of the transistor Q1 is connected to the base of the transistor Q2 and one end of the resistor R3, the other end of the resistor R4 is connected to one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7 and the anode of the diode D1, the cathode of the diode D1 is connected to the other end of the resistor R5, the collector of the transistor Q2 is connected to the other end of the resistor R3, the other end of the resistor R7 and one end of the resistor R2, the collector of the transistor Q2 is connected to one end of the resistor R1 and one end of the capacitor C1, the base electrode of the triode Q3 is simultaneously connected with the other end of the resistor R1 and the other end of the capacitor C1, and the emitter electrode of the triode Q3 is connected with the other end of the resistor R2 and outputs.
In a further embodiment, the negative pressure source output module comprises: the circuit comprises a resistor R8, a resistor R9, a capacitor C3, an integrated circuit U1, a capacitor C4, a resistor R10, a triode Q4, a diode D3, a resistor R11, an adjustable resistor RV1, a capacitor C5 and a diode D2; wherein, pin 7 of the integrated circuit U1 is connected to one end of the resistor R9 and one end of the resistor R8, pin 2 and pin 6 of the integrated circuit U1 are connected to the other end of the resistor R8 and one end of the capacitor C3, pin 8 and pin 4 of the integrated circuit U1 are connected to the other end of the resistor R9 and one end of the resistor R10 and one end of the resistor R11, respectively, pin 5 of the integrated circuit U1 is connected to the other end of the resistor R10, one end of the capacitor C4 and the collector of the transistor Q4, pin 3 of the integrated circuit U1 is connected to the cathode of the diode D3 and the cathode of the diode D2, the base of the transistor Q4 is connected to the control end of the adjustable resistor RV1, the anode of the diode D3 is connected to one end of the adjustable resistor R1 and one end of the capacitor C5, the other end of the resistor R11 is connected with the other end of the adjustable resistor RV1, and the No. 1 pin of the integrated circuit U1 is connected with and outputs the other end of the capacitor C3, the other end of the capacitor C4, the anode of the diode D2 and the other end of the capacitor C5.
In a further embodiment, the signal transmitting module comprises: an inductor L1, an inductor L2, a capacitor C9, a triode Q5, a triode Q6, a capacitor C11, a capacitor C10, a resistor R13, a resistor R14, a capacitor C12, a diode D4, a resistor R16 and a capacitor C13; wherein, the collector of the transistor Q5 is connected to one end of the capacitor C11, one end of the capacitor C9 and one end of the inductor L1, the emitter of the transistor Q5 is connected to one end of the capacitor C10, the other end of the capacitor C9 and one end of the inductor L2, the base of the transistor Q5 is connected to one end of the resistor R13, one end of the capacitor C12 and the anode of the diode D4, the cathode of the diode D4 is connected to one end of the resistor R14, one end of the resistor R15 and the collector of the transistor Q6, the base of the transistor Q6 is connected to the other end of the resistor R15 and one end of the capacitor C13, the other end of the inductor L1 is connected to and outputs the other end of the capacitor C11, the other end of the resistor R13, the other end of the resistor R14 and one end of the resistor R16, the other end of the inductor L2 is connected to and outputs the other end of the capacitor C10, the other end of the capacitor C12, the emitter of the transistor Q6, the other end of the capacitor C13, and the other end of the resistor R16.
In a further embodiment, the signal transmitting module comprises a rectifying and filtering circuit; the rectification filter circuit includes: the circuit comprises a resistor R12, a capacitor C6, a rectifier bridge BR1, a capacitor C7, a voltage stabilizer U2 and a capacitor C8; one end of the resistor R12 is connected with one end of the capacitor C6 and inputs voltage, the positive input end of the rectifier bridge BR1 is connected with the other end of the resistor R12 and the other end of the capacitor C6 at the same time, the negative input end of the rectifier bridge BR1 inputs voltage, the positive output end of the rectifier bridge BR1 is connected with one end of the capacitor C7 and the No. 1 pin of the voltage stabilizer U2 at the same time, the negative output end of the rectifier bridge BR1 is connected with the other end of the capacitor C7, the No. 2 pin of the voltage stabilizer U2 and one end of the capacitor C8 at the same time and is grounded, the No. 3 pin of the voltage stabilizer U2 is connected with the other end of the capacitor C8, one end of the capacitor C8 is connected with the other end of the inductor L2, and the other end of the capacitor C8 is connected with the other end of the inductor L1.
In a further embodiment, the integrated circuit U1 is model NE555 and the voltage regulator U2 is model 7805.
Has the advantages that: the utility model rectifies and filters the input working voltage, so that the working circuit meets the required working value; meanwhile, when a plurality of RFID readers work at the same frequency and in the same action range, the storage circuit outputs radio frequency signals, the signals are buffered when being led out, data signal detection is simultaneously carried out and is used for signal front-stage and back-stage input and output impedance matching, and a negative pressure source is adopted for output when the radio frequency signals are output, so that the working efficiency and stability of the readers can be effectively improved.
Drawings
Fig. 1 is a working circuit diagram of the present invention.
Fig. 2 is a circuit diagram of the signal buffer module of the present invention.
Fig. 3 is a circuit diagram of the signal transmitting module of the present invention.
Fig. 4 is a circuit diagram of the negative pressure source output module of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these details; in other instances, well-known features have not been described in order to avoid obscuring the present invention.
A memory circuit for improving the operating efficiency of an RFID reader, comprising: the device comprises a signal buffering module, a signal transmitting module and a negative pressure source output module; the signal transmitting module comprises a rectifying and filtering circuit.
Wherein, the signal buffering module includes: the circuit comprises a resistor R1, a resistor R7, a resistor R6, a capacitor C2, a resistor R4, a diode D1, a resistor R5, a triode Q1, a triode Q2, a resistor R3, a capacitor C1, a triode Q3 and a resistor R2; the negative pressure source output module includes: the circuit comprises a resistor R8, a resistor R9, a capacitor C3, an integrated circuit U1, a capacitor C4, a resistor R10, a triode Q4, a diode D3, a resistor R11, an adjustable resistor RV1, a capacitor C5 and a diode D2; the signal transmitting module includes: an inductor L1, an inductor L2, a capacitor C9, a triode Q5, a triode Q6, a capacitor C11, a capacitor C10, a resistor R13, a resistor R14, a capacitor C12, a diode D4, a resistor R16 and a capacitor C13; the rectification filter circuit includes: the circuit comprises a resistor R12, a capacitor C6, a rectifier bridge BR1, a capacitor C7, a voltage stabilizer U2 and a capacitor C8;
as shown in fig. two, the base of the transistor Q1 is connected to one end of the resistor R4, the collector of the transistor Q1 is connected to one end of the resistor R5 and the collector of the transistor Q3, the emitter of the transistor Q1 is connected to and outputs from the base of the transistor Q2 and one end of the resistor R3, the other end of the resistor R4 is connected to and outputs from one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7 and the anode of the diode D1, the cathode of the diode D1 is connected to the other end of the resistor R5, the collector of the transistor Q2 is connected to the other end of the resistor R3, the other end of the resistor R7 and one end of the resistor R2, the collector of the transistor Q2 is connected to one end of the resistor R1 and one end of the capacitor C1, the base electrode of the triode Q3 is simultaneously connected with the other end of the resistor R1 and the other end of the capacitor C1, and the emitter electrode of the triode Q3 is connected with the other end of the resistor R2 and outputs.
As shown in fig. three, a collector of the transistor Q5 is connected to one end of the capacitor C11, one end of the capacitor C9 and one end of the inductor L1, an emitter of the transistor Q5 is connected to one end of the capacitor C10, the other end of the capacitor C9 and one end of the inductor L2, a base of the transistor Q5 is connected to one end of the resistor R13, one end of the capacitor C12 and an anode of the diode D4, a cathode of the diode D4 is connected to one end of the resistor R14, one end of the resistor R15 and a collector of the transistor Q6, a base of the transistor Q6 is connected to the other end of the resistor R15 and one end of the capacitor C13, and the other end of the inductor L1 is connected to the other end of the capacitor C11, the other end of the resistor R13, the other end of the resistor R14 and one end of the resistor R16, the other end of the inductor L2 is connected to and outputs the other end of the capacitor C10, the other end of the capacitor C12, the emitter of the transistor Q6, the other end of the capacitor C13 and the other end of the resistor R16; one end of the resistor R12 is connected to one end of the capacitor C6 and receives an input voltage, a positive input end of the rectifier bridge BR1 is connected to the other end of the resistor R12 and the other end of the capacitor C6, a negative input end of the rectifier bridge BR1 receives an input voltage, a positive output end of the rectifier bridge BR1 is connected to one end of the capacitor C7 and the pin No. 1 of the regulator U2, a negative output end of the rectifier bridge BR1 is connected to the other end of the capacitor C7, the pin No. 2 of the regulator U2 and one end of the capacitor C8 and is grounded, the pin No. 3 of the regulator U2 is connected to the other end of the capacitor C8, one end of the capacitor C8 is connected to the other end of the inductor L2, and the other end of the capacitor C8 is connected to the other end of the inductor L1.
As shown in fig. four, pin No. 7 of the integrated circuit U1 is connected to one end of the resistor R9 and one end of the resistor R8, pin No. 2 and pin No. 6 of the integrated circuit U1 are connected to the other end of the resistor R8 and one end of the capacitor C3, pin No. 8 and pin No. 4 of the integrated circuit U1 are connected to the other end of the resistor R9 and one end of the resistor R10 and one end of the resistor R11, respectively, and input voltage, pin No. 5 of the integrated circuit U1 is connected to the other end of the resistor R10, one end of the capacitor C4 and the collector of the transistor Q4, pin No. 3 of the integrated circuit U1 is connected to the cathode of the diode D3 and the cathode of the diode D2, the base of the transistor Q4 is connected to the control terminal of the adjustable resistor RV1, the anode of the diode D3 is connected to one end of the adjustable resistor R35 1 and one end of the capacitor C5, the other end of the resistor R11 is connected with the other end of the adjustable resistor RV1, and the No. 1 pin of the integrated circuit U1 is connected with and outputs the other end of the capacitor C3, the other end of the capacitor C4, the anode of the diode D2 and the other end of the capacitor C5.
The working principle is as follows: when the circuit works, working voltage is introduced, the resistor R12 and the capacitor C6 are connected in parallel to divide voltage, meanwhile, interference signals can be effectively filtered, meanwhile, the voltage is rectified through the rectifier BR1, so that the working voltage is input, circuit filtering is carried out through the capacitor C7 and the capacitor C8, and the voltage stabilizer U1 stabilizes voltage, so that the voltage of each module is improved; when a plurality of RFID readers work at the same frequency and are in the same action range, the storage circuit reads output data, meanwhile, signal output is buffered and detected through the signal buffer module, signals and working voltage pass through the capacitor C2 filtering input circuit, so that the base of the triode Q1 is electrified, the collector of the triode Q1 is electrified, the collector of the triode Q2 is electrified, a resistor R2 is connected between the emitter of the triode Q3 and the emitter of the triode Q2 in series and used for reducing the hysteresis effect, at the moment, the collector of the triode Q2 and the base of the triode Q3 are buffered, the capacitor C1 and the resistor R1 are connected in parallel to eliminate interference signals, the base of the triode Q2 is used for outputting signals, and the diode D1, the resistor R5 and the resistor R7 form a compensation circuit which is used for compensating the signal frequency; the signal is output to the signal transmitting module, the negative pressure source output module is used, an integrated circuit U1, a capacitor C3, a resistor 9 and a resistor R8 form a non-stable multi-pass oscillation circuit, the oscillation frequency is related to the output of an external signal, meanwhile, the No. 5 silver monitoring office of the integrated circuit U1 controls the voltage, an adjustable resistor RV1 is adjusted to control and output negative voltage, the base of a triode Q4 controls an adjustable resistor RV1, the voltage is lower than the month, the oscillation frequency is higher, so that the negative voltage output is completed, the transmitting circuit is controlled, the triode Q5, an inductor L1, a capacitor C9, a capacitor C10 and the like form a capacitor three-point high-frequency oscillator, a diode D4 conducts and transmits signals, and the triode Q6 amplifies the signals, so that radio-frequency signals are generated and transmitted, and the working efficiency and stability of the reader-writer can be.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be modified to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (5)
1. A memory circuit for improving the operating efficiency of an RFID reader, comprising: the device comprises a signal buffering module, a signal transmitting module and a negative pressure source output module;
the signal buffering module includes: the circuit comprises a resistor R1, a resistor R7, a resistor R6, a capacitor C2, a resistor R4, a diode D1, a resistor R5, a triode Q1, a triode Q2, a resistor R3, a capacitor C1, a triode Q3 and a resistor R2; wherein, the base of the transistor Q1 is connected to one end of the resistor R4, the collector of the transistor Q1 is connected to one end of the resistor R5 and the collector of the transistor Q3, the emitter of the transistor Q1 is connected to the base of the transistor Q2 and one end of the resistor R3, the other end of the resistor R4 is connected to one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 is connected to one end of the resistor R7 and the anode of the diode D1, the cathode of the diode D1 is connected to the other end of the resistor R5, the collector of the transistor Q2 is connected to the other end of the resistor R3, the other end of the resistor R7 and one end of the resistor R2, the collector of the transistor Q2 is connected to one end of the resistor R1 and one end of the capacitor C1, the base electrode of the triode Q3 is simultaneously connected with the other end of the resistor R1 and the other end of the capacitor C1, and the emitter electrode of the triode Q3 is connected with the other end of the resistor R2 and outputs.
2. The storage circuit for improving the working efficiency of the RFID reader-writer according to claim 1, wherein the negative pressure source output module comprises: the circuit comprises a resistor R8, a resistor R9, a capacitor C3, an integrated circuit U1, a capacitor C4, a resistor R10, a triode Q4, a diode D3, a resistor R11, an adjustable resistor RV1, a capacitor C5 and a diode D2; wherein, pin 7 of the integrated circuit U1 is connected to one end of the resistor R9 and one end of the resistor R8, pin 2 and pin 6 of the integrated circuit U1 are connected to the other end of the resistor R8 and one end of the capacitor C3, pin 8 and pin 4 of the integrated circuit U1 are connected to the other end of the resistor R9 and one end of the resistor R10 and one end of the resistor R11, respectively, pin 5 of the integrated circuit U1 is connected to the other end of the resistor R10, one end of the capacitor C4 and the collector of the transistor Q4, pin 3 of the integrated circuit U1 is connected to the cathode of the diode D3 and the cathode of the diode D2, the base of the transistor Q4 is connected to the control end of the adjustable resistor RV1, the anode of the diode D3 is connected to one end of the adjustable resistor R1 and one end of the capacitor C5, the other end of the resistor R11 is connected with the other end of the adjustable resistor RV1, and the No. 1 pin of the integrated circuit U1 is connected with and outputs the other end of the capacitor C3, the other end of the capacitor C4, the anode of the diode D2 and the other end of the capacitor C5.
3. The storage circuit for improving the working efficiency of an RFID reader-writer according to claim 1, wherein the signal transmitting module comprises: an inductor L1, an inductor L2, a capacitor C9, a triode Q5, a triode Q6, a capacitor C11, a capacitor C10, a resistor R13, a resistor R14, a capacitor C12, a diode D4, a resistor R16 and a capacitor C13; wherein, the collector of the transistor Q5 is connected to one end of the capacitor C11, one end of the capacitor C9 and one end of the inductor L1, the emitter of the transistor Q5 is connected to one end of the capacitor C10, the other end of the capacitor C9 and one end of the inductor L2, the base of the transistor Q5 is connected to one end of the resistor R13, one end of the capacitor C12 and the anode of the diode D4, the cathode of the diode D4 is connected to one end of the resistor R14, one end of the resistor R15 and the collector of the transistor Q6, the base of the transistor Q6 is connected to the other end of the resistor R15 and one end of the capacitor C13, the other end of the inductor L1 is connected to and outputs the other end of the capacitor C11, the other end of the resistor R13, the other end of the resistor R14 and one end of the resistor R16, the other end of the inductor L2 is connected to and outputs the other end of the capacitor C10, the other end of the capacitor C12, the emitter of the transistor Q6, the other end of the capacitor C13, and the other end of the resistor R16.
4. The storage circuit for improving the working efficiency of the RFID reader-writer according to claim 3, wherein the signal transmitting module comprises a rectifying and filtering circuit; the rectification filter circuit includes: the circuit comprises a resistor R12, a capacitor C6, a rectifier bridge BR1, a capacitor C7, a voltage stabilizer U2 and a capacitor C8; one end of the resistor R12 is connected with one end of the capacitor C6 and inputs voltage, the positive input end of the rectifier bridge BR1 is connected with the other end of the resistor R12 and the other end of the capacitor C6 at the same time, the negative input end of the rectifier bridge BR1 inputs voltage, the positive output end of the rectifier bridge BR1 is connected with one end of the capacitor C7 and the No. 1 pin of the voltage stabilizer U2 at the same time, the negative output end of the rectifier bridge BR1 is connected with the other end of the capacitor C7, the No. 2 pin of the voltage stabilizer U2 and one end of the capacitor C8 at the same time and is grounded, the No. 3 pin of the voltage stabilizer U2 is connected with the other end of the capacitor C8, one end of the capacitor C8 is connected with the other end of the inductor L2, and the other end of the capacitor C8 is connected with the other end of the inductor L1.
5. The memory circuit of claim 1, wherein the integrated circuit U1 is model NE555 and the voltage regulator U2 is model 7805.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020692231.4U CN212009581U (en) | 2020-04-29 | 2020-04-29 | Storage circuit for improving working efficiency of RFID reader-writer |
| PCT/CN2020/090033 WO2021217726A1 (en) | 2020-04-29 | 2020-05-13 | Storage circuit for improving working efficiency of rfid reader-writer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020692231.4U CN212009581U (en) | 2020-04-29 | 2020-04-29 | Storage circuit for improving working efficiency of RFID reader-writer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212009581U true CN212009581U (en) | 2020-11-24 |
Family
ID=73409550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020692231.4U Expired - Fee Related CN212009581U (en) | 2020-04-29 | 2020-04-29 | Storage circuit for improving working efficiency of RFID reader-writer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN212009581U (en) |
| WO (1) | WO2021217726A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117518955B (en) * | 2023-12-22 | 2024-04-09 | 甘肃省烟草公司天水市公司 | Multipurpose code scanning gun access equipment control circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2862365A2 (en) * | 2012-06-18 | 2015-04-22 | Master Lock Company LLC | Rfid detection system |
| CN104636691A (en) * | 2013-11-13 | 2015-05-20 | 成都新方洲信息技术有限公司 | Transponder for RFID (radio frequency identification) system |
| CN104901748B (en) * | 2015-04-17 | 2018-03-16 | 广东技术师范学院 | UHF type RFID communications records analysis and RFID simulation realizing methods |
| CN206340032U (en) * | 2016-12-14 | 2017-07-18 | 河南师范大学 | A kind of RFID radio-frequency front-end |
| CN207302111U (en) * | 2017-03-27 | 2018-05-01 | 广州上粤智能科技有限公司 | Active label emitter |
| US10353384B1 (en) * | 2018-07-03 | 2019-07-16 | Stmicroelectronics, Inc. | Audio playback using radio-frequency identification tag |
-
2020
- 2020-04-29 CN CN202020692231.4U patent/CN212009581U/en not_active Expired - Fee Related
- 2020-05-13 WO PCT/CN2020/090033 patent/WO2021217726A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021217726A1 (en) | 2021-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7688182B2 (en) | RFID system and RFID chip equipped with sensor function | |
| CN212009581U (en) | Storage circuit for improving working efficiency of RFID reader-writer | |
| CN101373524A (en) | Radio frequency identification label circuit system structure and working method and application thereof | |
| CN113259292A (en) | Differential input demodulation circuit for amplitude modulated wave envelope signals of radio frequency identification tags | |
| CN201387611Y (en) | Radio-frequency card reader-writer communication circuit | |
| CN201075228Y (en) | Radio frequency identification tag circuit system structure | |
| CN202694378U (en) | Fish identifying reader-writer | |
| CN105631636A (en) | Novel and intelligent shelf system for logistics picking operation | |
| CN209086944U (en) | Based on Indy R2000 chip four-way RFID reader device | |
| CN202257621U (en) | Integral module with near field communication-electronic product code (NFC-EPC) functions | |
| CN211742134U (en) | Power supply control circuit applied to power amplifier in ultrahigh frequency reader-writer | |
| CN213484868U (en) | Radio frequency identification device | |
| CN209560554U (en) | A kind of low frequency rod type reader for supporting multi-protocols | |
| CN203299838U (en) | Card reading circuit and card reader | |
| CN217113303U (en) | Subway overhauls and equips location detecting system based on RFID | |
| CN204706047U (en) | A kind of RFID card reader for high fail-safe computer | |
| CN219658131U (en) | Radio frequency card read-write circuit | |
| CN211127727U (en) | Identification circuit for money storage box | |
| CN203350897U (en) | UHF read-write module of mobile data terminal | |
| CN204680047U (en) | For the telecommunication circuit in composite card, composite card and compound visa card | |
| CN216903717U (en) | Butterfly laser driving module | |
| CN204759465U (en) | Inward and outward personnel intellectual detection system system | |
| CN204808365U (en) | Servo driver monitoring management device | |
| CN208459792U (en) | A kind of intelligent temperature monitoring chip | |
| CN113902078B (en) | Remote ID identity recognition method and system suitable for being within 1500 meters |
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: 20201124 |