CN201084278Y - A radio-frequency identification device of long-distance location management - Google Patents
A radio-frequency identification device of long-distance location management Download PDFInfo
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- CN201084278Y CN201084278Y CNU2007201554556U CN200720155455U CN201084278Y CN 201084278 Y CN201084278 Y CN 201084278Y CN U2007201554556 U CNU2007201554556 U CN U2007201554556U CN 200720155455 U CN200720155455 U CN 200720155455U CN 201084278 Y CN201084278 Y CN 201084278Y
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Abstract
The utility model discloses a radio frequency identification apparatus for remote locating management, comprising a sensing unit, an upper control unit, a lower control unit, a radio frequency identification unit, an antenna unit, a GPS unit, a wire data transmission unit and/or a wireless data transmission unit; the sensing unit is used to detect the position signal of the information carrier to be sensed, and send the corresponding instruction signal; the upper control unit is used to receive the position signal sent by the connected sensing unit, send the corresponding operation instruction to the connected lower control unit, and receive the radio frequency data sent by the connected lower control unit and perform processing operation; in addition, the upper control unit is also used to receive the data sent from the network center by the connected wire data transmission unit and the wireless data transmission unit, and then perform processing operation; meanwhile, the position data of the connected GPS unit is sent to the remote network center for position management via the wire data transmission unit and/or the wireless data transmission unit.
Description
Technical field
The utility model relates to the REID field, particularly a kind of rfid device of long range positioning management.
Background technology
Radio-frequency (RF) identification (RFID) technology is a kind of contactless automatic identification technology, and its ultimate principle is to utilize the coupling of radiofrequency signal and space thereof, transport property, realize to static or mobile in the automaton identification of article to be identified.
Radio-frequency recognition system generally is made up of two parts, i.e. electronic tag and reader.Between electronic tag and reader, realize the space coupling of radiofrequency signal, in coupling channel,, realize the transmission of energy, the exchange of data according to sequential relationship.During system works, reader sends microwave inquiry energy signal, after electronic tag is received microwave inquiry energy signal, with the rectification of a part of microwave inquiry energy signal is circuit working in the DC power supply subtab, and the data message modulation back reflection that another part microwave inquiry energy signal is preserved in the electronic tag returns reader.Reader receives the am signals of reflected back, extracts the sign data message of preserving in the electronic tag.
But in the prior art, it is special when REID is applied to vehicle management, there is certain problem: in existing information of vehicles recognition system, only adopt REID to realize telemanagement with combining of GPRS, this technology that is limited to a kind of communication standard, nothing location brings inconvenience for present vehicle control and management, especially in the railway operation, this location, monitoring, scheduling and management long-range, high-speed target cause significant limitation to train.
The utility model content
The utility model is to provide a kind of rfid device of long range positioning management, with solve above-mentioned can't be to problem long-range, the high-speed target location.
For addressing the above problem, the utility model provides a kind of rfid device of long range positioning management, comprising:
Sensing cell, upper control module, the next control module, rfid uint, antenna element, GPS unit, wired digital transmission unit be or/and the wireless data sending unit, wherein,
Sensing cell: detect the position signalling of information measured carrier, and send the corresponding instruction signal;
Upper control module: after the command signal that the described sensing cell that reception is connected is sent, send out corresponding operational order to the described the next control module that is connected, receive rf data and processing that described the next control module is sent, receive the described wired digital transmission unit that is connected, the data and the processing of wireless data sending unit;
The next control module: receive operational order, and control the described rfid uint that is connected and gather rf data, and described rf data is sent to described upper control module from described upper control module;
Rfid uint: armed frequency microwave signal is sent to the described antenna element that is connected, and the rf data from described antenna element is carried out demodulation;
Antenna element: send the frequency microwave signal or receive rf data to electronic tag from electronic tag by described rfid uint;
GPS unit: the position signalling that gets access to is sent to described upper control module that is connected and the control signal that receives described upper control module;
The wired digital transmission unit: the data in the described upper control module that will be connected send by cable and are given to network center, and the instruction that receives from described network center by cable is sent to described upper control module;
The wireless data sending unit: the data in the described upper control module that will be connected send to network center wirelessly, and the instruction that receives wirelessly from described network center is sent to described upper control module.
Wherein, described sensing cell comprises first sensor and first signal deteching circuit that is connected, second sensor and the secondary signal testing circuit that is connected, wherein, first sensor produces first control signal when the described information carrier of sensing arrives primary importance, second sensor produces second control signal when the sensitive information carrier arrives the second place, first signal deteching circuit and secondary signal testing circuit respectively to described first control signal, second control signal amplify, filtering and shaping.
Wherein, described rfid uint comprises the frequency locking circuit of the output characteristic frequency microwave signal that is connected with described the next control module, be connected with described frequency locking circuit and amplify the power synthesis circuit of microwave signal, the signal of the described power synthesis circuit that will be connected is sent to the input and output buffer circuit of described antenna element, described input and output buffer circuit is sent to the demodulator circuit that is connected with the data of described antenna element, the data of described demodulator circuit after with demodulation are sent to the differentiation shaping circuit, are sent to the described the next control module that is connected after the shaping of described differentiation shaping circuit.
Wherein, described antenna element comprises main antenna and the emergency antenna that links to each other with described rfid uint respectively.
Wherein, described wireless data sending unit comprises identification unit and control circuit, and wherein, described identification unit is used to store all customer data to differentiate that user and store environmental data are to realize inserting long-range network center's service; Described control circuit comprise with wireless mode receive the short message of described network center receiving circuit, send short message to the radiating circuit of network center with modulate the logic control circuit of upward signal and demodulation downgoing signal, described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
Wherein, the wireless transmission form of the control module in the described wireless data sending unit adopts GSM, GSM-R, GPRS, CDMA, CDMA2000, WCDMA or TD-SCDMA form.
Wherein, described wired digital transmission unit comprises identification unit and control circuit, and wherein, described identification unit is used to store all customer data differentiating user and store environmental data, and communicates by letter with long-range network center by unique IP address; Described control circuit comprises the logic control circuit that receives the receiving circuit of the information of described network center, the radiating circuit that send information to network center and modulation upward signal and demodulation downgoing signal in the cable mode, and described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
By the device in the utility model, when information carrier arrives the primary importance of surveyed area, described sensing cell produces first control signal, and described first control signal is sent to upper control module, sends enabled instruction by described upper control module to the next control module; When information carrier arrived the second place of surveyed area, described sensing cell produced second control signal, and described second control signal is sent to upper control module; After described upper control module is received second control signal, then the inquiry tag instruction is sent to the next control module; After receiving inquiry tag instruction by the next control module, receive the rf data of information carrier by described rfid uint and antenna element, and described rf data sent to upper control module, upper control module with effective information through the wireless data sending unit or/and the instruction that the wired digital transmission unit sends to network center and carries out network center to realize Long-distance Control, upper control module also receives the position data that the GPS unit sends, and position data is carried out location management by the wired digital transmission unit or/and the wireless data sending unit sends to network center.This device utilizes the coupling of radiofrequency signal and space thereof, transport property, realization is treated recognition object and is carried out automaton identification time, utilize described wireless data sending unit or/and remote information transmission and management are realized in the wired digital transmission unit, for example in the railway operation management, can realize remote monitoring, transfer and the management of train.
Description of drawings
Fig. 1 is the structural drawing of embodiment;
Fig. 2 is the structural drawing of rf data unit among the embodiment;
Fig. 3 is the process flow diagram that carries out telemanagement among the embodiment;
Fig. 4 carries out the process flow diagram of self check process for each unit among the embodiment.
Embodiment
Embodiment of the present utility model provides a kind of rfid device of realizing the long range positioning management, describes embodiment of the present utility model in detail below in conjunction with accompanying drawing.At first in conjunction with Fig. 1 embodiment is described, this embodiment is the structural drawing of the rfid device of long range positioning management.
The rfid device of this long range positioning management comprises: sensing cell 10, upper control module 20, the next control module 30, rfid uint 40, antenna element 50, wireless data sending unit 70, wired digital transmission unit 90 and GPS unit 80, described upper control module 20 connects sensing cell 10, the next control module 30, wired digital transmission unit 90 respectively or/and wireless data sending unit 70 and GPS unit 80, and described the next control module 30 also connects described antenna element 50 by described video data crosspoint 40.
Described sensing cell 10 is divided into two-way, respectively realizes by a sensor and a signal deteching circuit, is respectively first sensor, first signal deteching circuit, second sensor, second testing circuit.
Wherein, sensor can be any one in Magnetic Sensor, photoelectric sensor or the pressure transducer, is used for obtaining the position signalling of the electronic tag 60 of tested vehicle by detecting magnetic signal, light signal or pressure signal.
Signal deteching circuit comprises amplifying circuit, filtering circuit and the shaping circuit that connects in turn.The electric signal that amplifying circuit is gathered the sensor that is connected carries out power amplification; Filtering circuit extracts at the signal of special frequency band, thereby filters out the signal of other frequency band, and shaping circuit carries out shaping with the signal of being gathered, and for example arrangement is square wave, sine wave, triangular wave or the like.In the present embodiment, the frequency setting that described filtering circuit extracts signal is 1～1000kHz, and first control signal and the arrangement of second control signal are square wave.
First sensor in the sensing cell, second sensor detect described electronic tag at two diverse locations respectively, and send first control signal and second control signal, with the railway operation system is example, when train process primary importance, train wheel has pressure to the wheel detector that is installed on the rail, this pressure signal is first control signal, also claims the last item signal, and the last item signal is mainly used in the wheel number and the speed of a motor vehicle of measuring every joint railway carriage; To the last item signal judgment and therefore and the signal after handling is second control signal and, be also referred to as and declare axis signal, be used to judge the true and false of last item signal, and post-processed or the like.These two signal combination are got up and are known as meter axle and declare.Because described amplifying circuit, filtering circuit and shaping circuit repeat no more here for the routine techniques means that those skilled in the art can grasp, and also do not do sign among the figure.Described two-way sensor and signal deteching circuit are separately positioned on primary importance and second place place, respectively according to the diverse location signal that collects, send corresponding last item signal and declare axis signal.Described sensing cell 10 come down to utilize the square wave of a certain width to replace that individual pulse triggers the signal that rf data is gathered in the prior art, so just reduced interference, the noise influence to system, also just reduced the generation of system misoperation.Can gather exactly information of vehicles.
Described upper control module 20 as the center of control, can use equipment such as PC, server as control module in the radio frequency automatic identification device.In the present embodiment, adopt industrial computer as upper control module, industrial computer has communication port such as RS232/422/485, USB, optical communications module, so that communicate with other control modules or the sensing cell 10 in the external world; Industrial computer also has computing machines such as common CPU, internal storage, external memory storage configuration device is often arranged, so that carry out data processing operation.
Described the next control module 30 can be the computing equipment identical with upper control module, as PC, server, industrial computer etc., also can be other hardware logic unit in addition, in the present embodiment, the preferred single-chip microcomputer that adopts is as the next control module 30, perhaps also can integrate, with the form realization of fixed or portable radio-frequency identification equipment with described rfid uint 40 and antenna element 50.Described single-chip microcomputer also has the communication interface that is complementary with upper control module 20, and by communication interface, single-chip microcomputer receives instruction from upper control module 20, thereby can receive the rf data of electronic tag 60.
In the present embodiment, described rfid uint 40 comprises frequency locking circuit 41, power synthesis circuit 42, demodulator circuit 43, differentiates shaping circuit 45 and input and output buffer circuit 44 as shown in Figure 2.
The input end of demodulator circuit 43 links to each other with described antenna element 50 through described input and output buffer circuit 44, output terminal links to each other with described the next control module 30 through described differentiation shaping circuit, the input end of described power synthesis circuit 42 links to each other with the next control module 30 by described frequency locking circuit 41 backs, and output is connected in the described antenna element 50 through behind the described input and output buffer circuit 44.Described frequency locking circuit 41 realizes that by phaselocked loop phaselocked loop is the common frequency control device in this area, can realize by existing multiple integrated circuit (as CD4046).Power synthesis circuit 42 is a kind of power amplification circuits, adopts the two-stage two-way synthetic, and the first order is divided into signal two-way afterwards for amplifying, and the amplification back is synthetic respectively.44 of input and output buffer circuits adopt the ferrite processing device of certain frequency range.After described the next control module 30 receives the collection rf data instruction that upper control module 20 sends, send instruction for frequency locking circuit 41, locking frequency, open power synthesis circuit 42 again, synthetic through the two-stage two-way, after reaching predetermined output power, isolate output frequency microwave signal through ferrite; The radiofrequency signal that described antenna element 50 receives after described input and output buffer circuit 44 isolation, sends to described the next control module 30 after handling through the shaping of separating mediation and differentiation shaping circuit 45 of demodulator circuit 43 successively.
Described antenna element 50 comprises two slave antennas, and one as main antenna, and another is as emergency antenna, all the radiofrequency signal of received RF recognition unit output or accept the radiofrequency signal that described electronic tag sends.When in the process of antenna unit self check or in the process in exchanges data, when detecting main antenna and break down, enable the reception that emergency antenna carries out rf data.
Described wired digital transmission unit 90 comprises identification unit and control circuit, it connects long-range network center, and LAN (Local Area Network) of the common formation of other car number identification system that links to each other with network center, also a plurality of recognition devices in the present embodiment and long-range network center are connected to form LAN (Local Area Network).In actual applications, LAN (Local Area Network) is preferentially selected the Ethernet structure for use.Wherein, the identification unit has a unique IP address; Control circuit comprises radiating circuit, receiving circuit and logic control circuit again, and radiating circuit is used for sending information to network center, and receiving circuit is used to receive the information from network center, and logic control circuit is used for coordinating control wired digital transmission unit 90.Described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
Described wireless data sending unit 70 comprises identification unit and control circuit, and SIM (Subscriber Identity Module) card is used for the identification of identity, and it has whole characteristic informations of user and stores user's environment and wireless environment.Wherein, control circuit comprises radiating circuit, receiving circuit and logic control circuit again, radiating circuit is used for sending short message to network center, and receiving circuit is used to receive the short message from network center, and logic control circuit is used for coordinating control wireless data sending unit.Described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
Described GPS unit 80 comprises data-interface, control processing circuit, gps antenna and power supply, and data-interface can be RS232, RS485 or USB interface, is used for transmitting data between GPS unit and upper control module; Control processing circuit is used to carry out the instruction from upper control module; Gps antenna receives from satellite, is used to obtain the positional information of institute's measurement equipment, and power supply is used for powering to the GPS unit.
As Fig. 3 is the process flow diagram that can realize the radio-frequency (RF) identification control of the remote control management described in the utility model.After the system power-up, upper control module just is in starting state, at first system is carried out initialization, execution in step 100, at this moment, in order to improve vehicle radio frequency automatic identification device reliability of operation, after upper control module starts, respectively sensing cell, the next control module, rfid uint, antenna element, GPS unit, wired digital transmission unit and wireless data sending unit are carried out self check.Described upper control module promptly is in the monitor state to sensing cell after the self check, and described sensing cell then is in powering state always.Described self check process is as shown in Figure 4:
Sensing cell carries out self check, if self check is passed through, then the sensing cell operate as normal begins to monitor the last item signal, if self check is not passed through, then sensing cell quits work, and the output failure alarm signal.Described alerting signal can be the flicker of light emitting diode or the voice of ringing or recording in advance of hummer.
The next control module carries out self check, if self check is passed through, then the next control module is waited for the enabled instruction from upper control module, if self check is not passed through, then the next control module quits work, and the output failure alarm signal;
Rfid uint carries out self check, if self check is passed through, then rfid uint is waited for the instruction of the next control module, if self check is not passed through, then rfid uint quits work, and the output failure alarm signal;
Antenna element carries out self check, if self check is passed through, then antenna element is waited for the microwave signal from rfid uint, if self check is not passed through, then antenna element quits work, and the output failure alarm signal.Further, when antenna element carries out self check, if main antenna launching failure wherein then starts emergency antenna;
The self check of wired digital transmission unit, if self check is passed through, then the effective information from upper control module is waited in the wired digital transmission unit, in case of necessity, also has the instruction of network center, if self check is not passed through, then the wired digital transmission unit quits work, and the output failure alarm signal;
The self check of wireless data sending unit, if self check is passed through, then the effective information from upper control module is waited in the wireless data sending unit, in case of necessity, also has the instruction of network center, if self check is not passed through, then the wireless data sending unit quits work, and the output failure alarm signal;
The self check of GPS unit, if self check is passed through, then the effective information from upper control module is waited in the GPS unit, if self check is not passed through, then the GPS unit quits work, and the output failure alarm signal.
After self check finishes, continue execution in step 110;
In step 130, when electronic tag arrives the second place of surveyed area, be described second sensor and secondary signal testing circuit position (for example, the running car that the radio frequency magnetic stripe is housed on the wheel shaft is to apart from 5 meters, exit position in inspection post the time), second sensor of described sensing cell has produced another electric signal, through the secondary signal testing circuit to described electric signal amplification, filtering and shaping after, form and declare axis signal.And declare axis signal and send to upper control module 20 described.
In step 150, after the next control module 30 receives the inquiry tag instruction by communication interface, to send to antenna element 50 by the microwave signal after rfid uint frequency locking, the power amplification, and by as the antenna element 50 of launch terminal to electronic tag 60 launched microwave signals.
In step 160, in step 150, GPS unit 80 will obtain positional information by gps antenna, and the positional information of being obtained will be turned back to upper control module 20 after receiving the inquiring position instruction by data-interface.
In step 170, electronic tag on the electronic tag 60 is after receiving the microwave signal that described antenna element 50 sends, with a part of microwave signal rectification is circuit working in the DC power supply subtab, feeds back to antenna element 50 after the data message modulation that another part microwave signal is preserved in the electronic tag.Antenna element 50 receives the rf data am signals of reflected back, by rfid uint described rf data is carried out demodulation, and therefrom extract the sign data message of preserving in the electronic tag, again the rf data after the demodulation is sent to described the next control module 40.
In step 180, the next control module 30 sends to upper control module 20 with received rf data by communication interface, thereby make upper control module obtain the rf data on the electronic tag, so can be as required on upper control module to the data of being gathered store, add up, show, processing such as retrieval, ordering.
In step 190, upper control module 20 is with packing according to certain frame format by the rf data of the next control module 30 transmissions with by the positional information that GPS unit 80 sends of being received.
In step 190, described frame format is as follows:
| Frame head | Frame length | The address | Time | Vehicle number information | Warning information | The CRC verification | Postamble |
Carry out data transmission by packet between the upper control module of present embodiment and wired digital transmission unit, wireless data sending unit, packet has adopted a kind of complete frame structure, to guarantee the correct of transmission.It is as follows that the frame of a complete order bag is formed structure:
Opening flag unit (frame head): 1 byte length, the beginning of a complete order bag of expression can be fixed as 16 system numbers, for example: 0X7E.
Frame length: 1 byte length, the physical length of order data is a unit with the byte.
The address: 1 byte length, be used to discern a plurality of RFID long range positioning equipment in the consolidated network, the address of each equipment is unique in the network.The order that each equipment parse addresses equates with self address.
Time: 4 byte lengths, the time that is used to obtain recognition of devices.
Vehicle number information: 6 byte lengths are used to place the information that inquiry tag obtains.
Warning information: 1 byte length is used to the abnormal information of the equipment that obtains.
Stick unit: 2 bytes keep (if desired, being the CRC16 check bit herein).
End mark unit (postamble): 1 byte length, the end of a complete order bag of expression is fixed as 16 systems and counts 0X7F.For the postamble that prevents previous frame and the frame head of next frame are obscured, special with beginning flag and end mark differentiation.
In step 200, data after upper control module 20 will be packed send to the logic control circuit of wired digital transmission unit 90 or wireless data sending unit 70 and modulate, and the radiating circuit through wired digital transmission unit 90 or wireless data sending unit 70 sends to network center again.In case of necessity, network center also can send to instruction the receiving circuit of wired digital transmission unit 90 or wireless data sending unit 70, carry out sending to upper control module 20 execution after the demodulation through logic control circuit, realize the remote control management the utility model device.In the practical application, wired digital transmission unit 90 or wireless data sending unit 70 are selected by network center.
Development along with modern communication technology, exist multiple communication standard at present, there is GSM, GPRS, CDMA, 3G (CDMA2000, WCDMA, multiple communication standard such as TD-SCDMA), add the GSM-R network of present railway row adjusting system special use, only the prior art that RFID and GPRS are combined can't satisfy current situation far away, therefore, the wireless data sending unit of described RFID long-range positioning system (Loran) can be selected GSM for use, GSM-R (railway), GPRS, CDMA, CDMA2000, in WCDMA or the TD-SCDMA control module any one, control as technology platform based on remote transmission, realization (is grouied busy the characteristic that the railway mobile communication is had, group calling, priority level, intrusion, function such as toll breakdown) add, constitute and be applicable to that the modern communications standard is used for the solution of the global system for mobile communications of railway.
More than the rfid device of the remote control management and the control procedure thereof of can realizing provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. the rfid device of long range positioning management is characterized in that, comprising: sensing cell, upper control module, the next control module, rfid uint, antenna element, GPS unit, wired digital transmission unit be or/and the wireless data sending unit, wherein,
Sensing cell: detect the position signalling of information measured carrier, and send the corresponding instruction signal;
Upper control module: after the command signal that the described sensing cell that reception is connected is sent, send out corresponding operational order to the described the next control module that is connected, receive rf data and processing that described the next control module is sent, receive the described wired digital transmission unit that is connected, the data and the processing of wireless data sending unit;
The next control module: receive operational order, and control the described rfid uint that is connected and gather rf data, and described rf data is sent to described upper control module from described upper control module;
Rfid uint: armed frequency microwave signal is sent to the described antenna element that is connected, and the rf data from described antenna element is carried out demodulation;
Antenna element: send the frequency microwave signal or receive rf data to electronic tag from electronic tag by described rfid uint;
GPS unit: the position signalling that gets access to is sent to described upper control module that is connected and the control signal that receives described upper control module;
The wired digital transmission unit: the data in the described upper control module that will be connected send by cable and are given to network center, and the instruction that receives from described network center by cable is sent to described upper control module;
The wireless data sending unit: the data in the described upper control module that will be connected send to network center wirelessly, and the instruction that receives wirelessly from described network center is sent to described upper control module.
2. device according to claim 1, it is characterized in that, described sensing cell comprises first sensor and first signal deteching circuit that is connected, second sensor and the secondary signal testing circuit that is connected, wherein, first sensor produces first control signal when the described information carrier of sensing arrives primary importance, second sensor produces second control signal when the sensitive information carrier arrives the second place, first signal deteching circuit and secondary signal testing circuit respectively to described first control signal, second control signal amplify, filtering and shaping.
3. device according to claim 1, it is characterized in that, described rfid uint comprises the frequency locking circuit of the output characteristic frequency microwave signal that is connected with described the next control module, be connected with described frequency locking circuit and amplify the power synthesis circuit of microwave signal, the signal of the described power synthesis circuit that will be connected is sent to the input and output buffer circuit of described antenna element, described input and output buffer circuit is sent to the demodulator circuit that is connected with the data of described antenna element, the data of described demodulator circuit after with demodulation are sent to the differentiation shaping circuit, are sent to the described the next control module that is connected after the shaping of described differentiation shaping circuit.
4. device according to claim 1 is characterized in that, described antenna element comprises main antenna and the emergency antenna that links to each other with described rfid uint respectively.
5. according to each described device in the claim 1～4, it is characterized in that, described wireless data sending unit comprises identification unit and control circuit, wherein, described identification unit is used to store all customer data to differentiate that user and store environmental data are to realize inserting long-range network center's service; Described control circuit comprise with wireless mode receive the short message of described network center receiving circuit, send short message to the radiating circuit of network center with modulate the logic control circuit of upward signal and demodulation downgoing signal, described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
6. device according to claim 5 is characterized in that, the wireless transmission form of the control module in the described wireless data sending unit adopts GSM, GSM-R, GPRS, CDMA, CDMA2000, WCDMA or TD-SCDMA form.
7. according to each described device in the claim 1～4, it is characterized in that, described wired digital transmission unit comprises identification unit and control circuit, wherein, described identification unit is used to store all customer data differentiating user and store environmental data, and communicates by letter with long-range network center by unique IP address; Described control circuit comprises the logic control circuit that receives the receiving circuit of the information of described network center, the radiating circuit that send information to network center and modulation upward signal and demodulation downgoing signal in the cable mode, and described logic control circuit links to each other with described receiving circuit, radiating circuit, identification unit and upper control module respectively.
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| CNU2007201554556U CN201084278Y (en) | 2007-08-14 | 2007-08-14 | A radio-frequency identification device of long-distance location management |
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| CNU2007201554556U CN201084278Y (en) | 2007-08-14 | 2007-08-14 | A radio-frequency identification device of long-distance location management |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101634681A (en) * | 2009-08-21 | 2010-01-27 | 深圳创维数字技术股份有限公司 | Automatic test system of electronic device |
| CN101551651B (en) * | 2009-05-13 | 2011-06-22 | 武汉爱迪智能工程有限公司 | Method for monitoring transmit electricity resource based on RFID and GPS technic |
| WO2012071964A1 (en) * | 2010-11-30 | 2012-06-07 | Lee Richard Jonathan | School bus forecasting system |
| CN101770601B (en) * | 2010-02-05 | 2012-10-03 | 深圳市华士精成科技有限公司 | Passive type active radio frequency identification and control method |
| CN103489326A (en) * | 2013-09-24 | 2014-01-01 | 中交北斗技术有限责任公司 | Vehicle location system based on space-time coding |
| CN113015915A (en) * | 2018-11-14 | 2021-06-22 | 三星电子株式会社 | Method for measuring electromagnetic signals radiated from a device and electronic device thereof |
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2007
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551651B (en) * | 2009-05-13 | 2011-06-22 | 武汉爱迪智能工程有限公司 | Method for monitoring transmit electricity resource based on RFID and GPS technic |
| CN101634681A (en) * | 2009-08-21 | 2010-01-27 | 深圳创维数字技术股份有限公司 | Automatic test system of electronic device |
| CN101770601B (en) * | 2010-02-05 | 2012-10-03 | 深圳市华士精成科技有限公司 | Passive type active radio frequency identification and control method |
| WO2012071964A1 (en) * | 2010-11-30 | 2012-06-07 | Lee Richard Jonathan | School bus forecasting system |
| CN103489326A (en) * | 2013-09-24 | 2014-01-01 | 中交北斗技术有限责任公司 | Vehicle location system based on space-time coding |
| CN103489326B (en) * | 2013-09-24 | 2016-02-03 | 中交北斗技术有限责任公司 | A kind of Vehicle positioning system based on space-time code |
| CN113015915A (en) * | 2018-11-14 | 2021-06-22 | 三星电子株式会社 | Method for measuring electromagnetic signals radiated from a device and electronic device thereof |
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