CN202102465U - Wireless radio-frequency identification label and wireless radio frequency identification system - Google Patents

Wireless radio-frequency identification label and wireless radio frequency identification system Download PDF

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Publication number
CN202102465U
CN202102465U CN2011201912336U CN201120191233U CN202102465U CN 202102465 U CN202102465 U CN 202102465U CN 2011201912336 U CN2011201912336 U CN 2011201912336U CN 201120191233 U CN201120191233 U CN 201120191233U CN 202102465 U CN202102465 U CN 202102465U
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China
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rfid
frequency identification
wireless radio
radio frequency
sensor
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CN2011201912336U
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Inventor
李祥珍
刘建明
甄岩
欧清海
曾令康
何清素
陈晰
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State Grid Corp of China SGCC
State Grid Information and Telecommunication Co Ltd
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State Grid Information and Telecommunication Co Ltd
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Abstract

Disclosed are a wireless radio-frequency identification label and a wireless radio frequency identification system. The wireless radio-frequency identification label comprises a data processing unit, a data transmission unit, and an antenna, wherein the data processing unit comprises a microprocessor and a memory which are mutually connected; the data transmission unit comprises a wireless radio frequency identification radio frequency module and a modulation-demodulation module which are mutually connected; the microprocessor is connected with the modulation-demodulation module; and the RFID radio frequency module is connected with the antenna. The wireless radio-frequency identification label further comprises a data acquisition unit which, collecting the data of the concerned environmental parameters and/or the device state information of the concerned device, is connected with the microprocessor; and the environmental parameters and/or the device state information, after being processed by the data processing unit, are output via the data transmission unit and the antenna. When being used for asset management, device inspection, and environment and device state monitoring of the to-be monitored object, the wireless radio-frequency identification label can reduce the cost of construction and management, simplify working flow, and improve production efficiency.

Description

Wireless radio frequency identification mark and radio frequency identification system
Technical field
The utility model relates to the communication technology, especially a kind of radio frequency identification (radio frequency identification devices, hereinafter to be referred as: RFID) label and radio frequency identification system.
Background technology
The RFID technology is a kind of non-contacting automatic identification technology, and its ultimate principle is to utilize the transport property of radiofrequency signal and space coupling or radar reflection, realizes being identified the automatic identification of object, and space coupling wherein can be inductance or EM coupling etc.
Rfid system based on the RFID technology generally includes electronic tag and reader two parts.Electronic tag wherein is also referred to as the RFID label, is the data carrier of rfid system, generally includes antenna and special chip, and special chip is also referred to as microprocessor.According to the difference of power supply mode, electronic tag can be divided into active electronic label (Active tag), passive electronic label (Passive tag) and half passive electronic label (Semi-passive tag).Wherein, battery is housed in the active electronic label, passive RF label does not have internal battery, and half passive electronic label partly relies on internal battery work.According to the difference of frequency of operation, electronic tag can be divided into low-frequency electronic label, high-frequency electronic label, ultrahigh frequency electronic tag and microwave electron label.According to the difference of packing forms, electronic tag can be divided into the special-shaped label of credit card label, linear label, paper shape label, glass tube label, circular label and specific use etc. again.
Reader in the rfid system is also referred to as RFID reader or rfid interrogator, and it carries out radio communication through antenna and RFID label, realizes reading or write operation RFID tag recognition sign indicating number and internal storage data.The RFID reader generally includes high-frequency model, control module and antenna.High-frequency model wherein comprises transmitter and receiver again.
At present; Rfid system has been applied to fields such as logistics, aviation, postal service, traffic, ticketing service, finance, military affairs, medical insurance, tracking, mine, equipment and asset management gradually; Through the supervision of RFID label that specific objectives such as people or equipment are worn, realize supervision to specific objectives such as people or equipment.At present can be according to various applications demands, use active, passive, half passive RFID tags to carry out asset management.
Sensor is a miniature embedded system normally, its processing power, storage capacity and communication capacity relatively a little less than, through carrying the powered battery of finite energy.See from network function; Each sensor node is taken into account the terminal and the router dual-use function of legacy network node; Except carrying out local information collection and data processing; Also to change processing such as data sent stored, manages, merged, forwarding to other sensor node, simultaneously and other sensor node cooperation accomplish some particular tasks, for example: operation such as set up route, dormancy and wake up.At present common wireless senser comprises wireless temperature, humidity, acceleration, wind direction and wind velocity, rainfall, vibrations, infrared, gas, pressure etc., has been widely used in environmental parameters such as temperature to specific environment or equipment, humidity, acceleration, wind direction and wind velocity, rainfall, vibrations, infrared, gas, pressure and has detected.
In the process that realizes the utility model; The inventor finds; In practical application, when specific objective being supervised, also need know usually by information such as the residing environmental parameter of supervision target, equipment states through the RFID technology; This just needs to being disposed rfid system and wireless sensor network respectively by the supervision target; Use rfid system that target to be monitored is carried out asset management, equipment routing inspection, to being carried out environment, equipment condition monitoring by the supervision target, it is higher to dispose rfid system and wireless sensor network two cover systems required construction and handling cost respectively through wireless sensor network; And the workflow of managing through rfid system and wireless sensor network two cover systems is complicated, has influenced production efficiency.
The utility model content
The utility model embodiment technical matters to be solved is: a kind of wireless radio frequency identification mark and radio frequency identification system are provided; When target to be monitored is carried out asset management, equipment routing inspection and environment, equipment condition monitoring; Practice thrift and build and handling cost; Simplify workflow, enhance productivity.
For solving the problems of the technologies described above; A kind of wireless radio frequency identification mark that the utility model embodiment provides; Comprise data processing unit, data transmission unit and antenna, said data processing unit comprises interconnective microprocessor and storer, and said data transmission unit comprises interconnective wireless radio frequency discrimination RFID radio-frequency module and modulation module; Said microprocessor is connected with said modulation module; Said RFID radio-frequency module is connected with said antenna, and said RFID label also comprises the status information of equipment data acquisition unit that carries out data acquisition of the environmental parameter of place environment and/or place equipment, is connected with said microprocessor; Said environmental parameter and/or status information of equipment are after said data processing unit is handled, through said data transmission unit and antenna output.
A kind of radio frequency identification system that the utility model embodiment provides; Comprise RFID label, rfid interrogator, RFID middleware and server; Said RFID label comprises data processing unit, data transmission unit and antenna; Said data processing unit comprises interconnective microprocessor and storer, and said data transmission unit comprises interconnective wireless radio frequency discrimination RFID radio-frequency module and modulation module, and said microprocessor is connected with said modulation module; Said RFID radio-frequency module is connected with said antenna; Said RFID label also comprises the status information of equipment data acquisition unit that carries out data acquisition of the environmental parameter of place environment and/or place equipment, is connected with said microprocessor, and said environmental parameter and/or status information of equipment are after said data processing unit processing; Through said data transmission unit and antenna output, upload to said server through said RFID middleware.
In wireless radio frequency identification mark and radio frequency identification system that the utility model the foregoing description provides; Also comprise data acquisition unit in the RFID label; Can carry out data acquisition to the environmental parameter of this RFID label place environment and/or the status information of equipment of place equipment; Collect after data processing unit is handled, can be through data transmission unit and antenna output, through a cover rfid system promptly realized simultaneously to specific objective supervise, with to being supervised the collection of information such as the residing environmental parameter of target, equipment state; Compared with prior art; Need not to dispose respectively rfid system and wireless sensor network two cover systems, when target to be monitored is carried out asset management, equipment routing inspection and environment, equipment condition monitoring, practiced thrift construction and handling cost; Simplify workflow, and improved production efficiency.
Through accompanying drawing and embodiment, the technical scheme of the utility model is done further detailed description below.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of the utility model RFID label;
Fig. 2 is the structural representation of another embodiment of the utility model RFID label;
Fig. 3 is the structural representation of another embodiment of the utility model RFID label;
Fig. 4 is the structural representation of another embodiment of the utility model RFID label;
Fig. 5 is the structural representation of an embodiment of the utility model rfid system.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the structural representation of an embodiment of the utility model RFID label.Referring to Fig. 1, the RFID label of the utility model embodiment comprises data processing unit 11, data transmission unit 12, data acquisition unit 13 and antenna 14.Wherein, data processing unit 11 comprises interconnective microprocessor 111 and storer 112.Data transmission unit 12 comprises interconnective RFID radio-frequency module 121 and modulation module 122.RFID radio-frequency module 121 is connected with antenna 14.Data acquisition unit 13, microprocessor 111, modulation module 122 connect successively.Wherein, Data acquisition unit 13 can be to the environmental parameter of RFID label place environment and/or the status information of equipment of place equipment; For example: any one in temperature, humidity, acceleration, wind direction and wind velocity, rainfall, vibrations, infrared, gas, the pressure and other parameters or multiple, carry out data acquisition, and environmental parameter that collects and/or status information of equipment sent to data processing unit 11; Behind the treated data processing unit 11, through data transmission unit 11 and antenna 14 outputs.
In the RFID label that the utility model the foregoing description provides; Also comprise data acquisition unit; Can carry out data acquisition to the environmental parameter of this RFID label place environment and/or the status information of equipment of place equipment, the data that collect can be through data transmission unit and antenna output after data processing unit is handled; Through a cover rfid system promptly realized simultaneously to specific objective supervise, with to by the collection of information such as supervision target residing environmental parameter, equipment state; Need not to dispose respectively rfid system and wireless sensor network two cover systems, when target to be monitored is carried out asset management, equipment routing inspection and environment, equipment condition monitoring, practiced thrift construction and handling cost; Simplify workflow, and improved production efficiency.
Particularly; In RFID label embodiment illustrated in fig. 1; Store the required application program of RFID label work, data and RFID label information in the storer 112; For example: the RFID tag identifier of this RFID label of unique identification (Identification, hereinafter to be referred as: ID), the device identification at RFID label place, device parameter, equipment purchasing time, plant maintenance information etc.Microprocessor 111 is for being used for reading command; Core component to instruction decode and execution command; Can read the data the storer 112 and the application program that starts in the storer 112 is handled the data that read from storer 112; Data processed result is sent to modulation module 122, and the data that modulation demodulation module 122 sends are handled, in the writing data into memory 112 with 122 transmissions of modulation module.122 pairs of data results of modulation module are modulated; Data processed result is loaded on certain carrier wave forms modulating wave and send to RFID radio-frequency module 121, and the reception signal that RFID radio-frequency module 121 receives is carried out demodulation obtain receiving data and send to microprocessor 111 and handle.RFID radio-frequency module 121 carries out the wireless signal transmitting-receiving with wireless radio frequency mode through antenna 14, thus the information interaction of realization and RFID reader.As a specific embodiment of the utility model, the operating frequency range of RFID radio-frequency module 121 can be 2.4GHz~2.524GHz.It is half-wave dipole or the miniature antenna of 2.4GHz that antenna 14 specifically can adopt frequency of operation.
Again referring to Fig. 1; Another specific embodiment as the utility model; Data acquisition unit 13 specifically can comprise the sensor assembly 131 that environmental parameter and/or status information of equipment are carried out data acquisition; With the environmental parameter that sensor assembly 131 is collected and/or status information of equipment from analog signal conversion be digital signal so that mould/number that data transmission unit 11 is handled (hereinafter to be referred as: A/D) modular converter 132; A/D modular converter 132 is connected with sensor assembly 131 and microprocessor 111 respectively, and the digital signal that is converted to is sent to microprocessor 111 so that microprocessor 111 carries out handled.
Fig. 2 is the structural representation of another embodiment of the utility model RFID label.As shown in Figure 2; Among the utility model embodiment, sensor assembly 131 specifically comprise in temperature sensor, humidity sensor, acceleration transducer, wind direction and wind velocity sensor, rain sensor, shock sensor, infrared sensor, gas sensor and the pressure transducer any one or multiple.
Fig. 3 is the structural representation of another embodiment of the utility model RFID label.As shown in Figure 3; Among the utility model embodiment; Sensor assembly 131 specifically comprises temperature sensor, humidity sensor and is connected the expansion interface of peripheral sensors; Peripheral sensors comprise in acceleration transducer, wind direction and wind velocity sensor, rain sensor, shock sensor, infrared sensor, gas sensor and the pressure transducer any one or multiple; Peripheral sensors can be connected to A/D modular converter 132 through expansion interface, and environmental parameter that collects and/or status information of equipment are sent to A/D modular converter 132.
Particularly, according to one of the utility model concrete the application, in Fig. 3 and RFID label embodiment illustrated in fig. 4, the temperature measurement range of temperature sensor can be-55 ℃~+ 150 ℃, and the operating humidity range of humidity sensor can be 0~100%RH.
Further; In the RFID of above-mentioned each embodiment of the utility model label; Can also comprise an energy supply unit 15; Come any one or more work energy that provide in data processing unit 11, data transmission unit 12 and the data acquisition unit 11; Specifically can provide work required electric energy, not provide the unit of work energy or module wherein can pass through external power source through energy supply unit 15 to each module in data processing unit 11, data transmission unit 12 and the data acquisition unit 11.As a specific embodiment, in practical application, energy supply unit 15 can comprise DC power supplier and internal battery module, and wherein the internal battery module adopts chargeable lithium cell.As shown in Figure 4, be the structural representation of another embodiment of the utility model RFID label, among this embodiment, specifically provided the concrete structure example that each unit supplies power among 15 couples of RFID embodiment illustrated in fig. 3 of energy supply unit.
In addition; Further embodiment according to the utility model; Microprocessor 111 can also be stored in A/D modular converter 132 environmental parameter and/or status information of equipment that send, digital signal form in the storer; And according to predetermined period or under trigger event triggering, send to 122 modulation of modulation module after, through RFID radio-frequency module 121 and antenna 14 outputs.Predetermined period wherein can be provided with in advance, trigger event for example: environmental parameter surpasses preset range, and/or equipment state reaches preset state etc.
Fig. 5 is the structural representation of an embodiment of the utility model rfid system.As shown in Figure 5, the rfid system of this embodiment comprises RFID label 1, rfid interrogator 2, RFID middleware 3 and server 4.Wherein, the RFID label comprises data processing unit 11, data transmission unit 12, data acquisition unit 13 and antenna 14.Wherein, data processing unit 11 comprises interconnective microprocessor 111 and storer 112.Data transmission unit 12 comprises interconnective RFID radio-frequency module 121 and modulation module 122.RFID radio-frequency module 121 is connected with antenna 14.Data acquisition unit 13, microprocessor 111, modulation module 122 connect successively.Wherein, Data acquisition unit 13 can be to the environmental parameter of RFID label place environment and/or the status information of equipment of place equipment; For example: any one in temperature, humidity, acceleration, wind direction and wind velocity, rainfall, vibrations, infrared, gas, the pressure and other parameters or multiple; Carry out data acquisition; And environmental parameter that collects and/or status information of equipment sent to data processing unit 11, behind the treated data processing unit 11, export to rfid interrogator 2 through data transmission unit 11 and antenna 14.Rfid interrogator 2 specifically can be hand-held or fixing RFID reader; Can read RFID label information and heat transfer agent in the RFID label; That is: the status information of equipment of environmental parameter and/or place equipment, RFID label information and heat transfer agent are passed through RFID middleware 3 and are uploaded onto the server 4.RFID middleware 3 specifically is used for connecting RFID label 1 and server 4 application programs; One group of general application programming interfaces (Application Program Interface that the application program end provides through RFID middleware 3; Hereinafter to be referred as: API); Can link rfid interrogator 2, read the data of RFID label, comprise RFID label information and heat transfer agent through antenna 14 outputs.
In the rfid system that the utility model the foregoing description provides; Also comprise data acquisition unit in the RFID label; Can carry out data acquisition to the environmental parameter of this RFID label place environment and/or the status information of equipment of place equipment, collect after data processing unit is handled, can export through data transmission unit and antenna; Through a cover rfid system promptly realized simultaneously to specific objective supervise, with to by the collection of information such as supervision target residing environmental parameter, equipment state; Need not to dispose respectively rfid system and wireless sensor network two cover systems, when target to be monitored is carried out asset management, equipment routing inspection and environment, equipment condition monitoring, practiced thrift construction and handling cost; Simplify workflow, and improved production efficiency.
Particularly, can adopt between RFID label 1 and the RFID reader 2 2.4GHz industry, science, medical science (Industrial Scientific Medical, hereinafter to be referred as: ISM) the microwave section communicates; After the RFID reader collects RFID label information and heat transfer agent, can be through wired mode, for example: Ethernet, USB (Universal Serial Bus; Hereinafter to be referred as: USB) mode etc.; Or wireless mode, for example: based on the WLAN of IEEE 802.11b standard (Wireless Fidelity, hereinafter to be referred as: WiFi), mode such as bluetooth; Communicate by letter with server 4; Label information and heat transfer agent are at first handled through RFID middleware 3, store and generate application by server 4 again, for example: show, supply inquiry, heat transfer agent to reach preset range warning etc.
RFID label 1 has specifically adopted structure embodiment illustrated in fig. 1 in embodiment illustrated in fig. 5.In addition, the RFID label 1 in the rfid system of embodiment also can adopt the RFID label construction of Fig. 2 to Fig. 4 any embodiment to realize, specifically can be referring to Fig. 2 to Fig. 4.
The RFID label construction that the utility model embodiment provides is simple, and advantages of small volume is with low cost; Function with active/passive/half passive RFID tags and wireless senser; When concrete the application; Can realize objective supervision and environment/functions such as status information of equipment collection simultaneously, can practice thrift RFID label and rfid interrogator equipment cost, save hardware investment and maintenance period; Simplify workflow, improve the electrical production operational efficiency.
The description of the utility model provides for example with for the purpose of describing, and is not exhaustively perhaps the utility model to be limited to disclosed form.A lot of modifications and variation are obvious for those of ordinary skill in the art.Selecting and describing embodiment is principle and practical application for better explanation the utility model, thereby and makes those of ordinary skill in the art can understand the various embodiment that have various modifications that the utility model design is suitable for special-purpose.

Claims (12)

1. wireless radio frequency identification mark; Comprise data processing unit, data transmission unit and antenna; Said data processing unit comprises interconnective microprocessor and storer, and said data transmission unit comprises interconnective wireless radio frequency discrimination RFID radio-frequency module and modulation module, and said microprocessor is connected with said modulation module; Said RFID radio-frequency module is connected with said antenna; It is characterized in that said RFID label also comprises the status information of equipment data acquisition unit that carries out data acquisition of the environmental parameter of place environment and/or place equipment, is connected with said microprocessor; Said environmental parameter and/or status information of equipment are after said data processing unit is handled, through said data transmission unit and antenna output.
2. wireless radio frequency identification mark according to claim 1; It is characterized in that; Said data acquisition unit comprises the sensor assembly that said environmental parameter and/or status information of equipment are carried out data acquisition; Be digital signal so that mould/number conversion module that said data transmission unit is handled with the environmental parameter that collects and/or status information of equipment from analog signal conversion, said mould/number conversion module is connected with said sensor assembly and said microprocessor respectively.
3. wireless radio frequency identification mark according to claim 2; It is characterized in that, said sensor assembly comprise in temperature sensor, humidity sensor, acceleration transducer, wind direction and wind velocity sensor, rain sensor, shock sensor, infrared sensor, gas sensor and the pressure transducer any one or multiple.
4. wireless radio frequency identification mark according to claim 3 is characterized in that, the working range temperature of said temperature sensor is-30 ℃~+ 15 ℃, and the operating humidity range of said humidity sensor is 0~100%RH.
5. wireless radio frequency identification mark according to claim 2; It is characterized in that; Said sensor assembly comprises temperature sensor, humidity sensor and is connected the expansion interface of peripheral sensors, said peripheral sensors comprise in acceleration transducer, wind direction and wind velocity sensor, rain sensor, shock sensor, infrared sensor, gas sensor and the pressure transducer any one or multiple.
6. wireless radio frequency identification mark according to claim 5 is characterized in that, the working range temperature of said temperature sensor is-30 ℃~+ 15 ℃, and the operating humidity range of said humidity sensor is 0~100%RH.
7. according to any described wireless radio frequency identification mark of claim 1 to 6; It is characterized in that, also comprise any one or more energy supply units that work energy is provided in said data processing unit, said data transmission unit and the said data acquisition unit.
8. wireless radio frequency identification mark according to claim 7; It is characterized in that; Said microprocessor also is used for environmental parameter and/or status information of equipment are stored in said storer; And according to predetermined period or under trigger event triggering, send to the modulation of modulation module after, export through said RFID radio-frequency module and said antenna.
9. wireless radio frequency identification mark according to claim 8 is characterized in that, the operating frequency range of said RFID radio-frequency module is 2.4GHz~2.524GHz.
10. wireless radio frequency identification mark according to claim 9 is characterized in that, said antenna is that frequency of operation is half-wave dipole or the miniature antenna of 2.4GHz.
11. radio frequency identification system; Comprise RFID label, rfid interrogator, RFID middleware and server; Said RFID label comprises data processing unit, data transmission unit and antenna, and said data processing unit comprises interconnective microprocessor and storer, and said data transmission unit comprises interconnective wireless radio frequency discrimination RFID radio-frequency module and modulation module; Said microprocessor is connected with said modulation module; Said RFID radio-frequency module is connected with said antenna, it is characterized in that, said RFID label also comprises the status information of equipment data acquisition unit that carries out data acquisition to the environmental parameter of place environment and/or place equipment; Be connected with said microprocessor; Said environmental parameter and/or status information of equipment through said data transmission unit and antenna output, upload to said server through said RFID middleware after said data processing unit is handled.
12. radio frequency identification system according to claim 11 is characterized in that, said RFID label is specially any described wireless radio frequency identification mark of claim 2 to 10.
CN2011201912336U 2011-06-09 2011-06-09 Wireless radio-frequency identification label and wireless radio frequency identification system Expired - Lifetime CN202102465U (en)

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CN102930324A (en) * 2012-11-30 2013-02-13 天津中环创新科技有限公司 Active RFID (radio frequency identification) technical sensor tag
CN103593702A (en) * 2013-12-02 2014-02-19 成都理工大学 Novel electronic tag with triaxial acceleration
WO2014036919A1 (en) * 2012-09-07 2014-03-13 江苏东仁网络科技有限公司 Fixed asset checking system and corresponding fixed asset
CN103927837A (en) * 2014-05-05 2014-07-16 南京业祥科技发展有限公司 RFID detector with human body induction function
CN104252632A (en) * 2013-06-25 2014-12-31 北京计算机技术及应用研究所 UHF RFID electronic label device with sensing function, and application method thereof
CN104345721A (en) * 2014-11-13 2015-02-11 黄河科技学院 Material condition monitoring system and method based on radio frequency identification (RFID) technology
CN104851143A (en) * 2015-06-09 2015-08-19 兰州交通大学 General packet radio service (GPRS)-based timing system of orientation movement or radio direction finding fixed site
CN105844318A (en) * 2015-01-14 2016-08-10 南通格物电子科技有限公司 Radio frequency identification tag, tag identification method, tag identification device and tag reader
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CN110909830A (en) * 2019-11-12 2020-03-24 国网天津市电力公司 Transformer substation secondary equipment information maintenance system based on RFID
CN111257589A (en) * 2020-01-20 2020-06-09 太原理工大学 Wind speed measuring method based on CRFID (cross-reference frequency identification) label
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WO2014036919A1 (en) * 2012-09-07 2014-03-13 江苏东仁网络科技有限公司 Fixed asset checking system and corresponding fixed asset
CN103679859A (en) * 2012-09-07 2014-03-26 江苏东仁网络科技有限公司 Fixed asset inspection system and corresponding fixed asset
CN102930324A (en) * 2012-11-30 2013-02-13 天津中环创新科技有限公司 Active RFID (radio frequency identification) technical sensor tag
CN104252632A (en) * 2013-06-25 2014-12-31 北京计算机技术及应用研究所 UHF RFID electronic label device with sensing function, and application method thereof
CN103593702A (en) * 2013-12-02 2014-02-19 成都理工大学 Novel electronic tag with triaxial acceleration
CN103927837B (en) * 2014-05-05 2016-02-24 南京业祥科技发展有限公司 A kind of RFID detector with human body induction function
CN103927837A (en) * 2014-05-05 2014-07-16 南京业祥科技发展有限公司 RFID detector with human body induction function
CN104345721A (en) * 2014-11-13 2015-02-11 黄河科技学院 Material condition monitoring system and method based on radio frequency identification (RFID) technology
CN104345721B (en) * 2014-11-13 2018-04-10 黄河科技学院 A kind of goods and materials condition monitoring system and method based on RFID technique
CN105844318A (en) * 2015-01-14 2016-08-10 南通格物电子科技有限公司 Radio frequency identification tag, tag identification method, tag identification device and tag reader
CN104851143A (en) * 2015-06-09 2015-08-19 兰州交通大学 General packet radio service (GPRS)-based timing system of orientation movement or radio direction finding fixed site
US20210109072A1 (en) * 2016-09-09 2021-04-15 Consumer Safety Technology, Llc Reference gas management in a breath alcohol calibration station
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CN106372713A (en) * 2016-10-21 2017-02-01 国网辽宁省电力有限公司葫芦岛供电公司 Cable trench cover plate based on embedded information identification function of resin matrix section bar
CN108805230A (en) * 2018-04-27 2018-11-13 中国电力科学研究院有限公司 A kind of online electronic tag and its method for acquiring information
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