CN203799395U - Ultrahigh frequency RFID reader-writer - Google Patents
Ultrahigh frequency RFID reader-writer Download PDFInfo
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- CN203799395U CN203799395U CN201420101166.8U CN201420101166U CN203799395U CN 203799395 U CN203799395 U CN 203799395U CN 201420101166 U CN201420101166 U CN 201420101166U CN 203799395 U CN203799395 U CN 203799395U
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Abstract
The utility model discloses an ultrahigh frequency RFID reader-writer, which comprises an RF module, an ultrasonic sensor, a storage unit, a processor, a power supply module and an RF module power supply, wherein the RF module is used for receiving and transmitting signals, and has power adjustability; the ultrasonic sensor is used for detecting the distance between the RF module and an ultrahigh frequency RFID tag body; the storage unit is used for storing the distance between the RF module and an ultrahigh frequency RFID tag body detected by the ultrasonic sensor; the processor is used for controlling the detected distance stored in the storage unit, and controlling the RF module to adjust the RF power; the processor is respectively connected with the storage unit and the RF module; the power supply module is used for supplying power to the ultrasonic sensor and the processor; and the RF module power supply is used for supplying power to the RF module. The ultrahigh frequency RFID reader-writer can adjust the radiant power of an RF power amplifier dynamically, can optimal the system power, reasonably saves electric energy, and can reduce the probability of the occurrence of interference between adjacent reader-writers.
Description
Technical field
The utility model relates to radio frequency identification (Radio Frequency Identification, RFID) technical field, is specifically related to a kind of ultrahigh frequency radio frequency identification (RFID) reader.
Background technology
Radio frequency identification (Radio Frequency Identification, RFID) is a kind of automatic identification and the technology of obtaining data, carries out noncontact bidirectional data communication reach the object that target is identified by RF-wise.Compared with traditional recognition method, RFID technology does not need direct contact, optical visible or manual intervention just can complete input and the processing of information.And this technical operation is convenient, the application that has been widely used at present logistics, production, transport, traffic, medical treatment, tracking, false proof, assets and equipment control etc. and need to carries out to data collection and treatment.Existing ultrahigh frequency radio frequency identification (RFID) reader, what substantially adopt is all the pattern of high power consumption, this pattern not only produces and disturbs RFID communication environment, and expends electric power resource, particularly portable read write line, the non-constant of flying power.For example publication number is CN101320419A, and the patent that application number is 200810302348.0 discloses " ultrahigh frequency RFID label reader-writer ", and it has provided the technology of manufacturing ultrahigh frequency RFID label reader-writer, publication number is CN102622571A, and the patent that application number is 201210042758.2 discloses " a kind of improved ultrahigh frequency RFID reader ", and it has adopted improved anti-collision technology, but does not consider the low-power consumption problem of reader, publication number is CN102446282A, application number is that 201110358053.7 patent discloses " ultrahigh frequency radio frequency identification (RFID) reader chip ", it is by reaching the object of low-power consumption to the improvement of ultrahigh frequency RFID chip, it is limited after all that but improvement ultrahigh frequency RFID chip reduces low-power consumption, be subject to the restriction of chip fabrication techniques, and the ultrahigh frequency RFID chip using is on the market of a great variety, ultrahigh frequency RFID chip cannot be accomplished to unitize, therefore, current technology can not meet the needs of modern society to miscellaneous ultrahigh frequency radio frequency identification (RFID) reader low-power consumption.
In addition, in traditional ultrahigh frequency RFID system, conventionally adopt definite value power to read and write ultra-high frequency RFID label, in order to improve the read-write accuracy rate to RFID label, often the emissive power of read write line is much larger than the required power of reading tag, this mode has not only caused the waste of electric energy, also may increase the probability that interference occurs between adjacent read write line.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of ultrahigh frequency radio frequency identification (RFID) reader of the low-power consumption that uses ultrasonic technology.
To achieve these goals, the utility model is by the following technical solutions:
A kind of ultrahigh frequency radio frequency identification (RFID) reader, comprising:
Radio-frequency module, for receiving signal and transmitted signal, and has power controllability;
Ultrasonic sensor, for surveying the distance between described radio-frequency module and ultra-high frequency RFID label object;
Storage unit, for storing the distance between radio-frequency module and the ultra-high frequency RFID label object that described ultrasonic sensor detects;
Processor, the described distance detecting for controlling described cell stores, and control described radio-frequency module adjusting radio-frequency power; Described processor is connected with described storage unit and described radio-frequency module respectively;
Power module, for giving ultrasonic sensor and processor power supply;
Radio-frequency module power supply, for powering to radio-frequency module.
Further, described radio-frequency module comprises radio frequency chip and power amplifier.
Further, described radio frequency chip is AS3991.
Further, the distance that described ultrasonic sensor is surveyed is at least 20 meters, and detection accuracy is a centimetre rank.
Further, described processor is S3C2416 processor.
Further, described storage unit comprises RAM and Flash, normal for for described S3C2416 processor.
Further, described power module adopts Boost booster circuit combination LDO mu balanced circuit to power.
Further, described processor is connected with external unit.
Further, described external unit comprises SD card interface and UART.
Ultrahigh frequency radio frequency identification (RFID) reader of the present utility model is by using ultrasonic sensor to survey with the distance between ultra-high frequency RFID label object and the antenna of read write line, and according to detected distance value, the radiant power of dynamic adjustments radio-frequency power amplifier, power that like this not only can optimization system, reasonably saves energy, can also reduce the probability that interference occurs between adjacent read write line.
Brief description of the drawings
Fig. 1 is the schematic diagram of ultrahigh frequency radio frequency identification (RFID) reader of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, ultrahigh frequency radio frequency identification (RFID) reader of the present utility model comprises: radio-frequency module, it is the super high frequency radio frequency module with power controllability, be used for receiving signal and transmitted signal, this radio-frequency module comprises radio frequency chip and power amplifier, preferably adopts the AS3991 of Austrian microsystems as radio frequency chip, AS3991 is the special chip designing for ultrahigh frequency RFID, integrated transtation mission circuit, receiving circuit, conversion unit of protocol.It not only supports IS018000-6C agreement, also compatible 18000-6A/B agreement.This radio frequency chip has parallel interface and two kinds of communication interfaces of serial line interface, for communicating with microcontroller.Power amplifier can freely regulate the power of radio frequency.
Ultrasonic sensor, for surveying the distance between radio-frequency module and ultra-high frequency RFID label object, the distance that this ultrasonic sensor is surveyed is at least 20 meters, and detection accuracy is a centimetre rank.First need the high trigger signal to a 10us left and right.Ultrasonic sensor is receiving after this trigger pip and will produce eight pulse signals that continuous frequency is 40KHz, and wait for returning of this high-frequency pulse signal, receiving after the reflected signal of ultra-high frequency RFID label object, ultrasonic sensor will be exported one section of high level to core S3C2416 processor, thereby complete the surveying work of distance, according to the distance value of surveying, the radiant power of dynamic adjustments radio-frequency power amplifier, thus reach the object of optimization system power.
Storage unit, for storing the distance between radio-frequency module and the ultra-high frequency RFID label object that ultrasonic sensor detects, this storage unit comprises RAM and Flash, can be for S3C2416 processor normal.
Processor, the distance between radio-frequency module and the ultra-high frequency RFID label object detecting for control store unit storage ultrasonic sensor, and control radio-frequency module adjusting radio-frequency power; Processor is connected with storage unit and radio-frequency module respectively.In the present embodiment, this processor is S3C2416 processor, and S3C2416 is low-power consumption, high-performance, SAMSUNGARM9 (ARM926EJ) processor cheaply, and the chip of tool superiority of effectiveness, is the most perfect replacer of S3C2440.UT-S3C2416 development board is a high performance-price ratio development board taking S3C2416 processor as core.
Power module, for giving ultrasonic sensor and processor power supply, this power module adopts Boost booster circuit combination high-performance LDO mu balanced circuit to power.Require lower feature according to ultrasonic wave module power source performance, directly adopt the power supply of Boost booster circuit.Meanwhile, for convenience of the Intelligent management of power of each module, the system measure of grade of taking to stop power supply in the time that it does not need to use, has carried out independently power management to radio-frequency power amplifier and ultrasonic sensor circuit and has designed.In the time that system is enabled, processor enters dormant state, under this state, CPU is powered and carves in due course and open ultrasonic sensor power supply.In the time detecting that object passes through, open radio-frequency module power supply, this part comprises baseband chip and power amplifier two parts.Finish if detect, close radio-frequency module power supply, system reenters dormant state.This power module has the intelligent electric power management module of low-power consumption, has suitable voltage conversion circuit and suitable electric power management mechanism, and such design has reduced the power consumption of overall system.
Processor of the present utility model is also connected with external unit, and external unit comprises SD card interface and UART.SD card interface circuit facilitates system to use in the time transplanting BOOTLOADER and linux kernel; UART circuit has completed communicating by letter of PC and native system, in debugging BOOTLOADER and linux kernel process, has important effect.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (9)
1. a ultrahigh frequency radio frequency identification (RFID) reader, is characterized in that, comprising:
Radio-frequency module, for receiving signal and transmitted signal, and has power controllability;
Ultrasonic sensor, for surveying the distance between described radio-frequency module and ultra-high frequency RFID label object;
Storage unit, for storing the distance between radio-frequency module and the ultra-high frequency RFID label object that described ultrasonic sensor detects;
Processor, the described distance detecting for controlling described cell stores, and control described radio-frequency module adjusting radio-frequency power; Described processor is connected with described storage unit and described radio-frequency module respectively;
Power module, for giving ultrasonic sensor and processor power supply;
Radio-frequency module power supply, for powering to radio-frequency module.
2. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, described radio-frequency module comprises radio frequency chip and power amplifier.
3. ultrahigh frequency radio frequency identification (RFID) reader according to claim 2, is characterized in that, described radio frequency chip is AS3991.
4. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, the distance that described ultrasonic sensor is surveyed is at least 20 meters, and detection accuracy is a centimetre rank.
5. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, described processor is S3C2416 processor.
6. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, described storage unit comprises RAM and Flash, normal for for described S3C2416 processor.
7. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, described power module adopts Boost booster circuit combination LDO mu balanced circuit to power.
8. ultrahigh frequency radio frequency identification (RFID) reader according to claim 1, is characterized in that, described processor is connected with external unit.
9. ultrahigh frequency radio frequency identification (RFID) reader according to claim 8, is characterized in that, described external unit comprises SD card interface and UART.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101166.8U CN203799395U (en) | 2014-03-06 | 2014-03-06 | Ultrahigh frequency RFID reader-writer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101166.8U CN203799395U (en) | 2014-03-06 | 2014-03-06 | Ultrahigh frequency RFID reader-writer |
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| CN203799395U true CN203799395U (en) | 2014-08-27 |
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| CN201420101166.8U Expired - Fee Related CN203799395U (en) | 2014-03-06 | 2014-03-06 | Ultrahigh frequency RFID reader-writer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839092A (en) * | 2014-03-06 | 2014-06-04 | 太仓欧卡网络服务有限公司 | Ultrahigh-frequency RFID reader-writer |
| CN107818354A (en) * | 2017-11-08 | 2018-03-20 | 西安航天自动化股份有限公司 | A kind of industrial ultrahigh frequency radio frequency identification (RFID) reader all-in-one of radio-frequency power self-regulation |
| CN108664822A (en) * | 2018-05-04 | 2018-10-16 | 飞天诚信科技股份有限公司 | A kind of method and card reader of optimization card reader power consumption |
-
2014
- 2014-03-06 CN CN201420101166.8U patent/CN203799395U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839092A (en) * | 2014-03-06 | 2014-06-04 | 太仓欧卡网络服务有限公司 | Ultrahigh-frequency RFID reader-writer |
| CN103839092B (en) * | 2014-03-06 | 2017-10-27 | 太仓欧卡网络服务有限公司 | A kind of ultrahigh frequency radio frequency identification (RFID) reader |
| CN107818354A (en) * | 2017-11-08 | 2018-03-20 | 西安航天自动化股份有限公司 | A kind of industrial ultrahigh frequency radio frequency identification (RFID) reader all-in-one of radio-frequency power self-regulation |
| CN108664822A (en) * | 2018-05-04 | 2018-10-16 | 飞天诚信科技股份有限公司 | A kind of method and card reader of optimization card reader power consumption |
| CN108664822B (en) * | 2018-05-04 | 2021-07-02 | 飞天诚信科技股份有限公司 | Method for optimizing power consumption of card reader and card reader |
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| Date | Code | Title | Description |
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| 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: 20140827 Termination date: 20150306 |
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| EXPY | Termination of patent right or utility model |