CN105676177A - Two-dimensional positioning system - Google Patents
Two-dimensional positioning system Download PDFInfo
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- CN105676177A CN105676177A CN201610007706.XA CN201610007706A CN105676177A CN 105676177 A CN105676177 A CN 105676177A CN 201610007706 A CN201610007706 A CN 201610007706A CN 105676177 A CN105676177 A CN 105676177A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/04—Position of source determined by a plurality of spaced direction-finders
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- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
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Abstract
The present invention provides a two-dimensional positioning system. The system comprises an upper computer, a card reader and an identification card. The upper computer is used for linearly positioning the identification card according to the fixed position of the card reader and the information sent by the card reader, simultaneously recording the position information of the identification card and then displaying the information in the form of graphics. The card reader is in wired data communication with the upper computer via a CAN bus or the Ethernet. The identification card is in wireless data connection with the card reader through a zigbee network. According to the technical scheme of the invention, the system can accurately position the identification card, so that the position of the identification card can be locked within the range of 3 meters. In some particular regions, the identification card can be accurately positioned at the centimeter level. Compared with regions ranging from hundreds of meters to thousands of meters, the positioning accuracy is increased by hundreds or even thousands of times.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the alignment system of a kind of two dimension.
Background technology
Current personnel positioning product many employings less radio-frequency (RFID) and the ZigBee technology based on field intensity, simply solve principle in signal coverage areas with and without problem, therefore the restriction being highly prone under mine the complex conditions such as electromagnetic interference, cannot really realize all standing of underground location signal, it is possible to the location of realization is pertaining only to zone location. Although some positioning product rushes down the technology such as cable or WIFI by leakage achieves so-called framing signal all standing, but position error is all very big, it is substantially all and is greater than 10 meters, therefore, such positioning precision is not being accurately positioned truly, it is impossible to meet on market every profession and trade to pinpoint demand.
Summary of the invention
It is an object of the invention to solve the defect of above-mentioned prior art, there is provided a kind of and be capable of ore deposit underground operators or equipment being accurately positioned on two-dimensional space, positioning precision realizes error less than 3 meters, performance has relative to existing product the alignment system of the two dimension significantly promoted.
A kind of two-dimensional positioning system, including:
Host computer, the information being used for the fixed position according to card reader and card reader transmission realizes the linear orientation of tag card; Record simultaneously tag card positional information and graphically display display it;
Card reader, realizes wired data communication with described host computer by CAN or Ethernet; For issuing host computer after all tag card informations in oneself region process, and the instruction of the transmission of host computer is conveyed to tag card;
Tag card, carries out wireless data cube computation with described card reader by ZigBee-network; For calculating the distance between tag card and card reader by ZigBee wireless network according to the time difference to card reader transmission instruction with from card reader reception instruction, and this range information is sent to card reader.
Further, two-dimensional positioning system as above, described card reader includes the active circuit module that the first MCU module is connected with MCU module, described active circuit module is for getting in touch with all tag cards in this card reader region by 125K carrier signal, to control tag card entrance activation, dormancy or high frequency transmission location information state.
Further, two-dimensional positioning system as above, described card reader includes the 2.4GHz high-frequency reception module, the 125KHz low frequency reception module that are connected with the first MCU module, and described high-frequency reception module is for communicating with the tag card of more than 30 meters distances in card reader region;Described low frequency reception module for card reader region in communicate less than the tag card of 30 meters of distances.
Further, two-dimensional positioning system as above, sound light alarming circuit module that described card reader includes being connected with the first MCU module, infrared remote control, liquid crystal display circuit module, serial memory module, FSK/CAN module, network interface circuit module.
Further, two-dimensional positioning system as above, described card reader includes 3.3V power module and 5V power module; Wherein, 3.3V power module is the first MCU module, serial memory module, FSK/CAN module, network interface circuit module, high-frequency reception module, low frequency reception module, infrared remote control, liquid crystal display circuit module provide electric energy, and 5V power module provides electric energy for sound light alarming circuit module.
Further, two-dimensional positioning system as above, described tag card includes the low frequency wake-up circuit module that the second MCU module is connected with the second MCU module; Described low frequency wake-up circuit module is corresponding with the active circuit module of card reader, and for being got in touch with by 125K carrier signal and card reader, activation, dormancy or the high frequency sent to receive and to perform card reader sends the control command of location information.
Further, two-dimensional positioning system as above, LED lamp circuit that described tag card includes being connected with the second MCU module, motor control circuit module, power module; Described power module is LED lamp circuit, motor control circuit module, low frequency wake-up circuit module provide electric energy.
The concept of signal flight time (TOF) computed range is introduced the alignment system of mine operation personnel by the present invention, can the alignment system of pinpoint two dimension thus providing. Existing location technology belongs to zone location, the application then belongs to and is accurately positioned, zone location refers to and can determine that tag card enters in hundreds of rice or upper km region, but the particular location in this region is uncertain, and the positional information of tag card can be locked within 3 meters by being accurately positioned of the application, positional information can also be accurate in some specific region centimetre. Relative to the hundreds of region to upper km, positioning precision improves hundreds of even thousands of times. The range of signal that existing card reader can cover only has more than 30 meter, and also less than 100 meters under spacious environment, the signal cover under card reader spaciousness environment use herein is more than 1000 meters, also can reach more than 400 meters in tunnel. So the installation cost of card reader will reduce by more than 80% when signal all standing.
Accompanying drawing explanation
Fig. 1 is the alignment system system construction drawing of invention two dimension;
Fig. 2 is location Calculation schematic diagram of the present invention;
Fig. 3 is card reader structure figure of the present invention;
Fig. 4 is tag card structure chart of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below technical scheme in the present invention be clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The alignment system system of two dimension provided by the invention is made up of three parts, as shown in Figure 1, one host computer can be connected with multiple card reader, wired data communication is realized by CAN or Ethernet between them, card reader number can according to location area size carry out quantification, 64 or 128 can be reached at most, wireless data cube computation is carried out by ZigBee-network between card reader and tag card, 80 tag cards can be held at most in each reader-signal region, when a tag card is simultaneously in multiple card reader region, this tag card can connect with multiple card reader simultaneously.
Host computer
Host computer is the core of whole system, and it is responsible for the process of the related data such as all card reader and tag card. The distance of tag card and a certain card reader can be real-time transmitted to host computer, and host computer can pass through the linear orientation of this information realization tag card; When the distance of tag card Yu multiple card reader passes to host computer simultaneously, host computer just can pass through the fixed position information of card reader, calculates the exact position of tag card accurately. As in figure 2 it is shown, card reader 1, distance D12 between card reader 2 and two card reader it is known that just can calculate the position of tag card by D1 and D2; In like manner can also be calculated the position of tag card by card reader 2 and card reader 3, the two position, it is possible that error, is minimized error thus also just obtaining the exact position of card reader by certain algorithm. After obtaining the position of tag card, again through the processed on backstage, the positional information of tag card is shown in a graphical form, gives and feel the most intuitively. It is also responsible for recording the positional information of tag card, is convenient for people to consult when needed.
Card reader
Card reader plays the effect presented under opening, it is responsible on the information of all tag cards in oneself region, distance according to Card Reader time or card issues host computer after being ranked up processing, by the calling of host computer, school time, activation, the instruction such as dormancy convey to tag card. Being arranged on discrepancy well head, the card reader of the specific positions such as restricted area also has a prior task, it is simply that controls to enter the tag card entrance activation of one's respective area, sleep or high frequency and sends positional information state. The tag card that is active enters normal operating conditions can allow other reader identification; It is in dormant tag card will no longer work, to save electric energy; The tag card being in high frequency transmission state sends frequency is usual transmission frequency 5 times of positional information, with the further precision improving location. Card reader circuit functional block diagram is as it is shown on figure 3, functions is expressed as follows:
Power pack
Card reader needs the poles such as two voltages of 5V and 3.3V, so input power is after two anti-reverse diodes, first pass through a switch DC-DC power supply chip and voltage is become 5V, for the chip and the circuit module that need 5V in circuit, 5V electricity changes into 3.3V through a LDO again, for the chip and the circuit module that need 3.3V in circuit.
High-frequency reception module
Card reader only receives the wireless signal of both direction, so installing two beam antennas outside card reader, circuit design have employed two receiver modules to complete the reception of both direction wireless data, high-frequency reception module is responsible for the 2.4G wireless signal received being changed into the discernible serial digital signal of MCU module and passing to MCU module, it is also possible to instruction MCU module sent is sent out by 2.4G wireless signal.
Low frequency reception module
Described low frequency reception module for card reader region in communicate less than the tag card of 30 meters of distances.
Serial memory module
Serial storage is a big data storage area, store the provisional data that some first MCU module need at ordinary times, do not connect once communication line, the tag card information that card reader collects all by storage to here, when communication line recovers normal time, data are taken out and are sent out by the first MCU module.
FSK/CAN module
This part circuit is the part in communicating circuit, can carry out FSK communication when plugging FSK module, and the tag card data message that the first MCU module reads passes to host computer by FSK bus;Can carry out CAN communication when plugging CAN module, the tag card data message that a MCU reads passes to host computer by CAN;
Active circuit module
This part circuit is to be sent activation signal by the first MCU module, after active circuit converts, by the carrier wave of 125K, signal is passed to power antenna, again through power antenna, signal is passed, activate the tag card near card reader or make tag card enter resting state.
Infrared remote control, liquid crystal display circuit module
This circuit is man-machine interaction partial circuit, the operational order that infrared remote controller reception remote controller sends passes to the first MCU module, first MCU module is by processing, the data needing display are passed to liquid crystal by liquid crystal display circuit, it is necessary to the data of transmission are outwards transmitted by corresponding PORT COM.
Sound light alarming circuit module
When needs sound and light alarm, the first MCU module sends sound and light alarm signal, the signal of telecommunication that alarm signal is converted to sound alarm subsystem by sound light alarming circuit and light crossing-signal may identify which, sends acoustic alarm respectively and light is reported to the police.
Network interface circuit module
This part circuit is also the part in communication interface circuit, also it is the physical layer of Ethernet, this circuit receives the data command that host computer is passed over by Ethernet, instruction is passed to the first MCU module, the first MCU module by this circuit module by the id number of tag card, from data information transfer such as discrete times to host computer.
First MCU module
First MCU module is the core devices of this card reader, and it is responsible for the co-ordination to this card reader each several part circuit. Process data or instruction that each data-interface passes over, be sent out data by each data-interface. Receive the tag card information received by high-frequency reception module or low frequency reception module, in the corresponding information of liquid crystal screen display, it is necessary to send sound and light alarm signal during warning. Corresponding data are stored when communication is broken down.
Tag card
Tag card is the least significant end of whole system, is but the procephalon of location information generation. When tag card be activated in running order after, moment is scanned oneself residing wireless network by it, after it networks, special instruction is sent to card reader by ZigBee wireless network, instruction is returned by card reader, tag card receives instruction again, by receiving instruction and sending the distance that the time difference of instruction calculates between tag card and card reader and lead to, and this result of calculation is sent to card reader. Owing to have employed the advanced technology of signal flight time computed range, it is possible to range error between tag card and card reader is ensured within 3 meters. After tag card receives dormancy instruction, penetration depth resting state, now will no longer carry out seeking net work, such that it is able to be substantially reduced power consumption, the battery making tag card is more permanent. As shown in Figure 4, functions is expressed as follows tag card circuit function block diagram:
Power module
Tag card need use battery power, along with electricity minimizing voltage also can step-down, and other partial circuits need a constant voltage, this part circuit just plays the effect of blood pressure lowering constant voltage, by the voltage constant of 3.0-3.7V at 3.0V.
Low frequency wake-up circuit module
The groundwork of this circuit is to receive 125K low frequency signal, 125K low frequency signal extracts useful command signal, command signal is sent to the second MCU module with certain agreement, receives data from the second MCU module or instruction changes into 125K low frequency signal again and sends out.
Second MCU module
Second MCU module is the core of whole tag card, module can pass through to send in onboard sky alignment environment the wireless signal of 2.4G, the wireless signal of 2.4G in environment can also be received, carry out, by the wireless signal of 2.4G and card reader, the distance that communication is measured between card reader. Make after receiving the dormancy instruction that low frequency wake-up partial circuit sends tag card enter resting state, when receive wake instruction up after make tag card carry out normal operating conditions. The signal of lamp flicker and motor vibrations can be sent after receiving special instruction.
LED and motor control circuit module
This part is the driving control circuit of LED and vibrating motor, when needing under specified conditions certain one or more card is carried out call notification, host computer issues call command in system, card reader judges after receiving order that the tag card called is whether within this reader range, as then sent the corresponding command by card reader to tag card within scope, tag card is sent control instruction by the second MCU module after receiving order, completes the intermittent vibration prompt of LED flicker or motor with this.
The present invention also provides for the localization method of a kind of two dimension, comprises the following steps:
Step 1: start host computer, host computer starts card reader by the network interface circuit module of card reader;
Specifically, as how many card reader of this startup, start which card reader and need to start according to card reader physical location and positioning precision, it is also possible to start whole card reader;
Step 2: card reader makes all tag cards in this card reader region be activated by its active circuit module or in a dormant state;
Specifically, activating method particularly includes: active circuit module sends low frequency signal to the low frequency wake-up circuit module of the tag card in card reader region, low frequency wake-up circuit module makes all tag cards in this card reader region activate after receiving this activation letter.
Step 3: the low frequency wake-up circuit module of tag card sends command information at least one card reader, then this command information is fed back to tag card after receiving this command information by card reader again, tag card is according to receiving instruction and sending the distance that the time difference of instruction calculates between tag card and card reader, and this range information is sent to the card reader of correspondence;
One tag card can corresponding multiple card reader, therefore, the range information that tag card calculates is with this tag card for the center of circle, multiple range informations of all card reader that this tag card can communicate, then the range information that it is corresponding with card reader is sent respectively to corresponding card reader by tag card respectively;
Step 4: card reader receives the range information that corresponding tag card sends, and sends this range information to host computer;
Specifically, card reader receives, by high-frequency reception module or low frequency reception module, the information that the low frequency wake-up circuit module from tag card sends, then by this information by sending the first MCU module to, the first MCU module is by communicating this information to host computer again through network interface circuit module.
Step 5: host computer is according to the tag card known and the more specific location information that the distance tackling card device calculates tag card;
Specifically, these computational methods, as in figure 2 it is shown, card reader 1, distance D12 between card reader 2 and two card reader it is known that just can calculate the position of tag card by D1 and D2 and D12; In like manner can also be calculated the position of tag card by card reader 2 and card reader 3, the two position, it is possible that error, is minimized error by particular algorithm thus also just obtaining the exact position of card reader.After obtaining the position of tag card, again through the processed on backstage, the positional information of tag card is shown in a graphical form, gives and feel the most intuitively. It is also responsible for recording the positional information of tag card, is convenient for people to consult when needed.
First, the positional information of card reader is fixing, and host computer can calculate the distance between any two card reader according to the fixed position of card reader;
Secondly, when some tag card and two card reader all can obtain data communication, this tag card just can calculate the range information between itself and this two card reader respectively;
Again, the range information of a certain the tag card that single card reader obtains would be likely to occur certain error, when the range information that multiple card reader obtain same tag card is delivered simultaneously to host computer, these information can be effectively integrated by host computer, thus calculating this tag card positional information more accurately.
Step 6: the two-dimensional signal of tag card is displayed by host computer according to the result calculated on image, stores this two-dimensional signal simultaneously.
The location instrument used on current personnel positioning market is card reader and tag card, because tag card to realize the demand networked at any time, so long dormancy can not be carried out, therefore battery is substantially not more than 1 year. And the present invention is when realizing framing signal all standing, having zoomed out card reader distance, the signal all standing in a same region, cost not only will not improve, anti-you can be substantially reduced. By a kind of technological means, realize the long-time dormancy under tag card off working state, waken up again during work, thus being greatly improved the work service efficiency of battery electric quantity, accomplishing energy-conservation and while extending tag card service life, also making the maintenance of tag card be substantially reduced.
Existing location technology belongs to zone location, and the technology of the application belongs to and is accurately positioned, zone location refers to and can determine that tag card enters in hundreds of rice or upper km region, but the particular location in this region is uncertain, what the application was previously mentioned is accurately positioned and can be locked within 3 meters by the positional information of tag card, can also be accurate to by positional information in some specific region centimetre. Relative to the hundreds of region to upper km, positioning precision improves hundreds of even thousands of times.
The range of signal that existing card reader can cover only has more than 30 meter, and also less than 100 meters under spacious environment, the signal cover under card reader spaciousness environment use herein is more than 1000 meters, also can reach more than 400 meters in tunnel. So the installation cost of card reader will reduce by more than 80% when signal all standing.
The personnel positioning mark card used on colliery, because the working time of workman is 8 hours, so the effective time of tag card also just only has 8 hours, other broadly falls into the non-productive work time in 16 hours. Because tag card used herein is only just activated when its work of needs, so the service efficiency of battery is 100%. So the service efficiency of the battery of tag card has not only been brought up to 100% from 33% by the application, it is also possible to the service life of battery is extended 3 times.
Corresponding to above-mentioned technical solution, use CAN to be connected between host computer with card reader or Ethernet connects, connect data bandwidth and want more than 100K could meet system requirements.Difference according to system, an attachable card reader of host computer can be at most 64 or 128. Using ZigBee wireless network to be connected between card reader with identification card, use free 2.4G frequency range, wireless connections distance more than 400 meters, message transmission rate is 250K, and maximum concurrency is 80.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit; Although the present invention being described in detail with reference to previous embodiment, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a two-dimensional positioning system, it is characterised in that including:
Host computer, the information being used for the fixed position according to card reader and card reader transmission realizes the linear orientation of tag card; Record simultaneously tag card positional information and graphically display display it;
Card reader, realizes wired data communication with described host computer by CAN or Ethernet; For issuing host computer after all tag card informations in oneself region process, and the instruction of the transmission of host computer is conveyed to tag card;
Tag card, carries out wireless data cube computation with described card reader by ZigBee-network; For calculating the distance between tag card and card reader by ZigBee wireless network according to the time difference to card reader transmission instruction with from card reader reception instruction, and this range information is sent to card reader.
2. two-dimensional positioning system according to claim 1, it is characterized in that, described card reader includes the active circuit module that the first MCU module is connected with MCU module, described active circuit module is for getting in touch with all tag cards in this card reader region by 125K carrier signal, to control tag card entrance activation, dormancy or high frequency transmission location information state.
3. two-dimensional positioning system according to claim 2, it is characterized in that, described card reader includes the 2.4GHz high-frequency reception module, the 125KHz low frequency reception module that are connected with the first MCU module, and described high-frequency reception module is for communicating with the tag card of more than 30 meters distances in card reader region; Described low frequency reception module for card reader region in communicate less than the tag card of 30 meters of distances.
4. two-dimensional positioning system according to claim 3, it is characterized in that, sound light alarming circuit module that described card reader includes being connected with the first MCU module, infrared remote control, liquid crystal display circuit module, serial memory module, FSK/CAN module, network interface circuit module.
5. two-dimensional positioning system according to claim 4, it is characterised in that described card reader includes 3.3V power module and 5V power module; Wherein, 3.3V power module is the first MCU module, serial memory module, FSK/CAN module, network interface circuit module, high-frequency reception module, low frequency reception module, infrared remote control, liquid crystal display circuit module provide electric energy, and 5V power module provides electric energy for sound light alarming circuit module.
6. two-dimensional positioning system according to claim 2, it is characterised in that described tag card includes the low frequency wake-up circuit module that the second MCU module is connected with the second MCU module;Described low frequency wake-up circuit module is corresponding with the active circuit module of card reader, and for being got in touch with by 125K carrier signal and card reader, activation, dormancy or the high frequency sent to receive and to perform card reader sends the control command of location information.
7. two-dimensional positioning system according to claim 6, it is characterised in that LED lamp circuit that described tag card includes being connected with the second MCU module, motor control circuit module, power module; Described power module is LED lamp circuit, motor control circuit module, low frequency wake-up circuit module provide electric energy.
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| CN201610007706.XA CN105676177A (en) | 2016-01-07 | 2016-01-07 | Two-dimensional positioning system |
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| CN201610007706.XA CN105676177A (en) | 2016-01-07 | 2016-01-07 | Two-dimensional positioning system |
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| CN105676177A true CN105676177A (en) | 2016-06-15 |
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Application publication date: 20160615 |