CN202025327U - Positioning device and system - Google Patents
Positioning device and system Download PDFInfo
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- CN202025327U CN202025327U CN201120000872XU CN201120000872U CN202025327U CN 202025327 U CN202025327 U CN 202025327U CN 201120000872X U CN201120000872X U CN 201120000872XU CN 201120000872 U CN201120000872 U CN 201120000872U CN 202025327 U CN202025327 U CN 202025327U
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Abstract
The utility model discloses a positioning device and a system. In the utility model, the positioning device adopts a radio-frequency identification technology to read geographical position information of passive tags; the positioning device sends the geographical position information and identification information stored in the positioning device to a positioning server by a wireless communication network; and the positioning server determines the position of the positioning device sending the information according to the geographical position information and the identification information. The utility model discloses an accurate positioning scheme applicable to a shaft of a coal mine by the combination of a wireless communication technology and the radio-frequency identification technology, and compared with the prior art, more accurate personnel positioning can be achieved.
Description
Technical field
The utility model relates to Wireless Telecom Equipment, particularly a kind of locating device and system.
Background technology
The degree that domestic mine management combines with computing machine mainly is limited to aboveground part, the staff in the course of the work under present coal mine, need carry out accurate localization to the underground work personnel, where determine coal mine personnel, thereby the personnel in the pit is carried out organization and administration effectively.To after catastrophic accident takes place, by obtaining personnel in the pit's precise location information, rescue work is implemented in the disaster scene that makes the rescue personnel can correctly arrive the indicator of trapped personnel place especially.But, owing under the special producing environment under the coal mine, do not have good localization method to reach accurate localization at present.
In staff's location technology under coal mine, some location technologies are arranged also at present.Because under the environment that special linear tunnel covers under the coal mine, the localization method that is used for the down-hole at present mainly is RFID (RadioFrequency Identification, radio-frequency (RF) identification/electronic tag) technology realizes the work attendance location in main tunnel, and this technology has mainly realized the work attendance function; The main at present RFID technology that adopts comes coal mine down-hole personnel is carried out the work attendance location, existing employing RFID technology realizes is work attendance location under the coal mine, bearing accuracy is very poor, can only be realization personnel's a location and a work attendance function on a large scale as in about hundred meters the zone.Another be in cellular radio based on the localization method of the coverage radius of cell of CELL ID (cell ID), come consumer positioning by the sub-district at identification user place, bearing accuracy often on radius of society quantity rank, about about 200 to 300 meters; Other wireless location technologies in cellular radio are also just like based on the uplink signal localization method of time of arrival, these localization methods are to utilize radiowave when the propagation in space, arrive time of base station by measuring the signal that sends from target MS with straight line, can obtain the distance between target MS and the base station.
In staff's location technology under the present in the above coal mine, the deficiency of its existence is: under the environment owing to linear covering special under the coal mine, the work attendance positioning function that is used for the personnel in the pit that the localization method RFID technology of down-hole mainly realizes at present, for personnel in the pit's location because technology and cost can't be accomplished accurate location; In the cellular radio based on the localization method of the coverage radius of cell of CELL ID, bearing accuracy often on radius of society quantity rank, about about 200 to 300 meters; Other the wireless location technology in cellular radio since the particular surroundings of underworkings as there being the wireless environment of multipath transmisstion, multiple access disturbs, and these localization methods such as very difficult line-of-sight propagation can not be advantageously applied under the coal mine.
The utility model content
The technical matters that the utility model solved is to provide a kind of locating device and system, in order to solve problem, the especially problem that the staff under the dangerous work environment such as coal mine is positioned that underground target is positioned.
A kind of locating device is provided among the utility model embodiment, has comprised:
The RFID read module is used to read the geographical location information of passive label;
Control unit module links to each other with RFID read module, wireless data module respectively, is used for finishing signaling control and data interaction between RFID read module and the wireless data module by the interface between two modules;
The wireless data module is used for sending the identification information of storing on geographical location information that the RFID read module reads and the wireless data module by wireless mode.
A kind of positioning system is provided among the utility model embodiment, has comprised described locating device, also comprised: cordless communication network, location-server, wherein:
Cordless communication network is used for geographical location information and identification information that locating device sends are transferred to location-server;
Location-server is used for according to geographical location information and the definite residing position of locating device that sends this information of identification information.
The utility model beneficial effect is as follows:
The technical scheme that the utility model embodiment provides is a kind of accurate targeting scheme that is applicable to that the wireless communication technology under the coal mine combines with the RFID technology, compared with prior art, can reach more accurate personnel positioning.
Description of drawings
Fig. 1 is a positioning system structural representation among the utility model embodiment;
Fig. 2 is a positioning device structure synoptic diagram one among the utility model embodiment;
Fig. 3 is a positioning device structure synoptic diagram two among the utility model embodiment;
Fig. 4 is a locating device data interaction implementing procedure synoptic diagram among the utility model embodiment;
Fig. 5 utilizes locating device to position the method implementing procedure synoptic diagram of processing among the utility model embodiment;
Fig. 6 utilizes positioning system to position the method implementing procedure synoptic diagram of processing among the utility model embodiment;
Fig. 7 is a localization method implementing procedure synoptic diagram among the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
In declarative procedure, in order to hold on the whole, at first will the embodiment of positioning system be described, the embodiment to locating device describes then, at last the method for using locating device and positioning system to position is described.
Fig. 1 is the positioning system structural representation, as shown in the figure, can comprise in positioning system:
Locating device 101, location-server 104 and constitute wireless communication network base station 102, the network equipment 103 in order to signal, wherein:
Cordless communication network is used for geographical location information and identification information that locating device sends are transferred to location-server;
Location-server is used for according to geographical location information and the definite residing position of locating device that sends this information of identification information.
In the enforcement, can further include in the positioning system:
In the enforcement, passive label can also be further used for for RFID read module readout power adjustment sign.
In the enforcement, location-server can also be further used for to wireless data module transmitted power adjustment order.
Concrete, the technical scheme that the utility model embodiment provides has proposed the down-hole Precise Position System that the RFID technology combines with wireless communication technology, and this system can realize not needing bigger cost just can realize personnel in the pit's precision location.Among Fig. 1, be used for the numerical information of colliery underworkings of reference numbersization as the station location marker card of passive label; The locating device that the RFID technology combines with wireless communication technology is the wireless receiving and dispatching terminal that can be configured to each underground work personnel that need locate, and is used for finishing the geographical location information of recognizing site tag card; The wireless base station is the base station equipment that the digitized positions information that locating device reads is sent to aboveground location-server by wireless mode.Between wireless base station and location-server, there is the network equipment to finish the exchange of radio communication information.
Fig. 2 is a positioning device structure synoptic diagram one, as shown in the figure, can comprise in the locating device:
Concrete, the locating device that the wireless communication technology that proposes in the technical scheme that the utility model embodiment provides combines with the RFID technology mainly can be made up of RFID read module, wireless data module and control unit module.This locating device is that the mode that adopts the RFID technology to combine with wireless communication technology designs realization.Can making full use of wireless communication technology, to have high bandwidth fast, the reliability height, and the advantage of long transmission distance, and utilize RFID to have simple and practical station location marker function, its wireless transmission also adopts wireless communication technology.Wherein:
The RFID read module is mainly finished the encoding and decoding to the reading of the geographical location information of down-hole passive label, signal.Can also carry out anti-collision algorithm to some special systems, can carry out encryption and decryption to the data that will transmit between radio-frequency card and reader, and can carry out the additional functions such as authentication between radio-frequency card and reader.
The wireless data module mainly is that the geographical location information of label that the RFID read module is read and self institute's stored personal information send to ground by wireless mode and handle as the Computer Processing center of location-server, finishes accurate location.
Control unit module mainly is to finish the signaling control and the interactive function of RFID read module and wireless data module by the interface between the module.Communicate with application systems software, and carry out the order that application systems software is sent, the communication process of control and RFID read module.
Concrete structure, annexation to locating device describes below.
Fig. 3 is a positioning device structure synoptic diagram two, and as shown in the figure, interface in the locating device and annexation can be divided into two parts.One be the RFID read module card reader-and the CPU of control unit module between interface, its function is to be responsible for the data message in the card reader in the RFID read module is passed to CPU in the control unit module, the order of CPU sends to card reader, and interface adopts 8 bit parallel port communications; Another is an interface between the CPU of wireless data module and control unit module, its function is that CPU gives the wireless data module with the card reader data forwarding that reads, and can receive the operational order that ground-based computer is sent by cordless communication network from the wireless data module, interface adopts serial communication.Also promptly:
1, link to each other by interruptive port, FPDP between RFID read module and the control unit module, wherein:
The RFID read module carries out next step operation by interruptive port notice control unit module;
Control unit module by FPDP from RFID read module reading of data, by FPDP to RFID read module transmit operation order.
Further, can also link to each other by the enable port between RFID read module and the control unit module, control unit module is carried out enable operation by the enable port to the RFID read module.
Concrete, in card reader-cpu i/f part, CPU and RFID read module adopt 8 bit parallel IO port communications, and physical interface is:
8 IO parallel data mouth: CPU read the data of RFID read module by parallel port, and instruct to the transmit operation of RFID read module;
Enable Pin: thus CPU can carry out the purpose that enable operation is avoided the repetition reading tag and realized low-power consumption to the RFID read module;
Interrupt: when the RFID read module reads label information, can produce by this pin and interrupt, remind CPU to carry out next step operation.
2, link to each other by the serial ports that comprises TX pin, RX pin between wireless data module and the control unit module, wherein:
Control unit module sends data by the TX pin to the wireless data module;
Control unit module receives from the next operational order of wireless data module transmission by the RX pin.
Further, can also link to each other by the enable port between wireless data module and the control unit module, control unit module is carried out enable operation by the enable port to the wireless data module.Concrete, CPU can receive and dispatch the data of label information by the enable operation of wireless data module is controlled the wireless data module.
Concrete, in wireless data module-cpu i/f part, CPU and wireless data module section adopt the serial communication operation, and physical interface is:
Enable Pin.CPU can carry out enable operation to the wireless data module;
TX (transmission): CPU sends label data information by this pin to the wireless data module;
RX (reception): CPU sends the associative operation that gets off by this pin reception ground-based computer and instructs.
Fig. 4 is a locating device data interaction implementing procedure synoptic diagram, as shown in the figure, can comprise the steps:
If step 404,16 random codes of label check correct, then respond card reader, reply PC+EPC (the product electronics sign indicating number) information of self; If invalid, then ignore order;
After step 407, card reader read handle information, can carry out read-write operation to label, CPU is sent to label together with handle random code and read order, gets final product the user data area part (UID) of reading tag, and this part is needed ground of native system physics and chemistry numerical information;
After step 410, wireless data module are received data message, be forwarded to ground-based computer automatically, finish.
In further implementing, the locator meams that adopts the RFID mode also exists if multiple users when computing machine sends information earthward simultaneously, might occur collision problem; When card reader is read a plurality of label simultaneously, need to consider that the label information (promptly nearest with card reader label information) with signal stiffness of coupling maximum screens, present software section lacks this function, haves much room for improvement; When many card reader read a label simultaneously, conflict phenomenon might appear, and cause the part card reader to read less than label information.Given this, also provide two kinds of settling modes among the utility model embodiment, a kind of is to adjust emissive power by positioning service, and a kind of is to carry out the power adjustment after locating device self is judged, describes below.
1, control unit module can also be further used for after reading geographical location information, and the power adjustment in the identification of geographic location information identifies, and adjusts emissive power to adjust read range according to this marking command RFID read module;
The RFID read module can also be further used for adjusting emissive power according to the order of control unit module.
Concrete, the card reader chip self contains the emissive power that changes, and regulates the function that reads distance.When laying the tunnel with passive label, then in advance the different label ID that put density in the tunnel are carried out erasablely distinguishing, be 5**** as the label ID at 5 meters intervals, the label at three meters intervals is 3****, just and this label 5,3 can be used as power adjustment sign.When terminal was read certain scope interior label, the order that the then automatic reading card device of CPU sends the change emissive power changed the purpose that terminal reads distance to reach.The real-time read-only unique tags information of terminal, thereby pinpoint method have so just been realized in the different densities tunnel.
2, the wireless data module can also be further used for received power adjustment order;
Control unit module can also be further used for adjusting emissive power to adjust read range according to power adjustment commands command RFID read module;
The RFID read module can also be further used for adjusting emissive power according to the order of control unit module.
Concrete, also can send instruction and control personnel's terminal from ground-based computer.For example, if when the workman enters the different tunnel of ID card density, can obtain unique id information by changing radio-frequency emission power.
Describe with the embodiment of example below locating device.
In the radio-frequency card reader part, because the underworkings requirement, reading distance and will reaching more than 5 meters of card reader so belong to the long-range radio-frequency system, then can adopt high band 915MHz to communicate by letter, the communication protocol ISO18000-6C agreement of adopting international standards.
The label aspect, simple in structure, cheap because inclement condition under the coal mine adopts passive label, be convenient to a large amount of the laying and maintenance in mine.
Radio frequency part, according to communication distance and emissive power, the relation formula between receiving sensitivity and the frequency of operation:
[Lfs](dB)＝32.44+20lgd(km)+20lgf(MHz)
Lfs is a loss in the formula, and d is a transmission range, and the unit of frequency calculates with MHz.
By following formula as seen, radio wave propagation loss in the free space (also claim decay) is only relevant with propagation distance d with frequency of operation f, and when f or d increase when being twice, [Lfs] will increase 6dB respectively.
The loss of following formula explanation radio wave propagation under free space:
Los＝32.44+20lgd(Km)+20lgf(MHz)
Los is propagation loss, and unit is dB, and d is a distance, and unit is Km, and f is a frequency of operation, and unit is MHz.
Can calculate, read if want to carry out radio frequency under 900MHz, and read apart from being about 10 meters, the loss of required chip or module is that difference is about 38 between emissive power and the receiving sensitivity.Under the rugged surroundings of tunnel, need the decay that also has signal of consideration, so also will select the antenna and the label of suitable gain.
The wireless transmission part can be selected novel TD-SCDMA (Time Division-SynchronousCode Division Multiple Access, TD SDMA inserts) module (abbreviating the TD module among the application as).This module transmission speed is fast, and stability is high, and it is big to carry data volume.On this basis, select for use suitable TD module can shorten the construction cycle of hardware, and improve the stability of system.
In the software design part, can use MCU (MicroControllerUnit, miniature control module claim one chip microcomputer again) to control radio frequency and TD part.Radio-frequency module is made as polling mode, in case it receives id information, data can partly be sent to ground-based computer by TD.Finish if data send, radio-frequency part branch enters poll next time.
Embodiment to the locating device application method describes below.
Fig. 5 utilizes locating device to position the method implementing procedure synoptic diagram of processing, as shown in the figure, can comprise the steps:
The identification information of storing on geographical location information that step 503, wireless data module transfer to by wireless mode sending controling unit module and the wireless data module.
In the enforcement, the uniqueness for the label that guarantees to read can further include:
Control unit module is after reading geographical location information, and the power adjustment in the identification of geographic location information identifies, and adjusts emissive power to adjust read range according to this marking command RFID read module;
The RFID read module is adjusted emissive power according to the order of control unit module.
Perhaps, the uniqueness for the label that guarantees to read can further include:
Wireless data module received power adjustment order;
Control unit module is by the interface received power adjustment order between two modules;
Control unit module is adjusted emissive power to adjust read range according to power adjustment commands command RFID read module;
The RFID read module is further used for adjusting emissive power according to the order of control unit module.
Fig. 6 utilizes positioning system to position the method implementing procedure synoptic diagram of processing, as shown in the figure, can comprise the steps:
In the enforcement, the uniqueness for the label that guarantees to read can further include:
Locating device is adjusted emissive power to adjust read range according to this sign after reading the power adjustment sign of passive label.
Perhaps, may further include:
Location-server by cordless communication network to locating device transmitted power adjustment order;
The locating device emissive power that passive label is read in adjustment according to power adjustment commands is to adjust read range.
Concrete, the technical scheme accurate localization mode that the utility model embodiment provides can be: at first the colliery underworkings is carried out the digitizing geographic position, lay the station location marker card according to accuracy requirement; The locating device that the staff that need locate carries reads the digital position information of position recognizing card; Locating device is sent to the digital position information that reads position recognizing card in the location-server on ground by wireless mode by the NodeB and the network switch; Location-server is oriented underground work personnel's accurate geographic position according to the digitized geography information and the positional information of the position recognizing card that reads.Describe with example more below.
At first, put passive label in the down-hole.The density of putting has determined the levels of precision of personnel positioning.For the consideration of anti-collision and precision, suppose that the card reader read range is 5 meters, then in the down-hole per 5 meters put a label, can make card reader in its read range, always read the information of a label like this, effectively avoid a conflict.
Secondly, for the angle of data volume and low-power consumption, consider send mode.Card reader can read with before during the different geography information of the label information that reads, it is sent to ground-based computer through the 3G wireless module; Also can adopt the mode of timed sending, send once in per 1 minute as main tunnel, excavation surface transmission one in per 3 minutes is inferior.
At last, the down-hole can add modules such as firedamp sensor, makes that the underground work personnel obtain warning message in the very first time, withdraw as early as possible when danger is arrived; Ground-based computer and underground work personnel can set up the news in brief communication mechanism by TD-SCDMA, be the not only reading frequency and the emissive power of may command personnel in the pit card reader end of ground-based computer, also can carry out brief communication, carry out the working site scheduling better with the personnel in the pit.
The collision problem that produces when preventing reading tag, the change radio-frequency emission power of proposition obtains the method for unique id information.Send instruction from ground-based computer and control personnel's terminal.When if the workman enters the different tunnel of ID card density, can obtain unique id information by changing radio-frequency emission power.The specific implementation method is: the card reader chip self contains the emissive power that changes, and regulates the function that reads distance.When laying the tunnel with passive label, then in advance the different label ID that put density in the tunnel are carried out erasablely distinguishing, be 5**** as the label ID at 5 meters intervals, the label at three meters intervals is 3****.When terminal was read certain scope interior label, the order that the then automatic reading card device of CPU sends the change emissive power changed the purpose that terminal reads distance to reach.The real-time read-only unique tags information of terminal, thereby pinpoint method have so just been realized in the different densities tunnel.
Based on same inventive concept, a kind of localization method also is provided among the utility model embodiment, because the principle that this method is dealt with problems is similar to locating device, positioning system and using method thereof, therefore the enforcement of this method can repeat part and repeat no more referring to the enforcement of locating device, positioning system and using method thereof.
Fig. 7 is a localization method implementing procedure synoptic diagram, as shown in the figure, can comprise the steps:
In the enforcement, can further include:
In geographical location information, comprise power adjustment sign;
Read range when adjustment adopts the RFID technology to read according to power adjustment sign.
In the enforcement, can further include:
Read range when adopting the RFID technology to read by the cordless communication network adjustment.
As seen from the above-described embodiment, the technical scheme that the utility model embodiment provides is a kind of accurate targeting scheme that is applicable to that the wireless communication technology under the coal mine combines with the RFID technology, compares with existing RFID technology, can reach more accurate personnel positioning;
Further, the change radio-frequency emission power that proposes of the collision problem that produces when preventing reading tag obtains the mode of unique id information; Can improve the location conflict and improve locating accuracy.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (11)
1. a locating device is characterized in that, comprising:
The radio frequency discrimination RFID read module is used to read the geographical location information of passive label;
Control unit module links to each other with RFID read module, wireless data module respectively, is used for finishing signaling control and data interaction between RFID read module and the wireless data module by the interface between two modules;
The wireless data module is used for sending the identification information of storing on geographical location information that the RFID read module reads and the wireless data module by wireless mode.
2. locating device as claimed in claim 1, it is characterized in that, control unit module is further used for after reading geographical location information, and the power adjustment in the identification of geographic location information identifies, and adjusts emissive power to adjust read range according to this marking command RFID read module;
The RFID read module is further used for adjusting emissive power according to the order of control unit module.
3. locating device as claimed in claim 1 is characterized in that,
The wireless data module is further used for received power adjustment order;
Control unit module is further used for adjusting emissive power to adjust read range according to power adjustment commands command RFID read module;
The RFID read module is further used for adjusting emissive power according to the order of control unit module.
4. as the arbitrary described locating device of claim 1 to 3, it is characterized in that, link to each other by interruptive port, FPDP between RFID read module and the control unit module, wherein:
The RFID read module carries out next step operation by interruptive port notice control unit module;
Control unit module by FPDP from RFID read module reading of data, by FPDP to RFID read module transmit operation order.
5. locating device as claimed in claim 4 is characterized in that, further links to each other by the enable port between RFID read module and the control unit module, and control unit module is carried out enable operation by the enable port to the RFID read module.
6. as the arbitrary described locating device of claim 1 to 3, it is characterized in that, link to each other by the serial ports that comprises TX pin, RX pin between wireless data module and the control unit module, wherein:
Control unit module sends data by the TX pin to the wireless data module;
Control unit module receives from the next operational order of wireless data module transmission by the RX pin.
7. locating device as claimed in claim 6 is characterized in that, further links to each other by the enable port between wireless data module and the control unit module, and control unit module is carried out enable operation by the enable port to the wireless data module.
8. a positioning system is characterized in that, comprise as claim 1 to 7 arbitrary as described in locating device, also comprise: cordless communication network, location-server, wherein:
Cordless communication network is used for geographical location information and identification information that locating device sends are transferred to location-server;
Location-server is used for according to geographical location information and the definite residing position of locating device that sends this information of identification information.
9. positioning system as claimed in claim 8 is characterized in that, further comprises:
Passive label is used for reading geographical location information for the RFID read module.
10. positioning system as claimed in claim 9 is characterized in that, comprising:
Passive label is further used for for RFID read module readout power adjustment sign.
11. positioning system as claimed in claim 8 is characterized in that, location-server is further used for to wireless data module transmitted power adjustment order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120000872XU CN202025327U (en) | 2011-01-04 | 2011-01-04 | Positioning device and system |
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| CN201120000872XU CN202025327U (en) | 2011-01-04 | 2011-01-04 | Positioning device and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065370A (en) * | 2011-01-04 | 2011-05-18 | 大唐移动通信设备有限公司 | Locating device, system and method |
| CN103440687A (en) * | 2013-09-13 | 2013-12-11 | 苏州大学 | RFID (Radio Frequency Identification) technology-based attendance checking method and system |
| CN104239918A (en) * | 2014-09-15 | 2014-12-24 | 浪潮软件股份有限公司 | Mine personnel position system |
-
2011
- 2011-01-04 CN CN201120000872XU patent/CN202025327U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065370A (en) * | 2011-01-04 | 2011-05-18 | 大唐移动通信设备有限公司 | Locating device, system and method |
| CN103440687A (en) * | 2013-09-13 | 2013-12-11 | 苏州大学 | RFID (Radio Frequency Identification) technology-based attendance checking method and system |
| CN104239918A (en) * | 2014-09-15 | 2014-12-24 | 浪潮软件股份有限公司 | Mine personnel position system |
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Granted publication date: 20111102 |