CN203572960U - Positioning system - Google Patents
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- CN203572960U CN203572960U CN201320666085.8U CN201320666085U CN203572960U CN 203572960 U CN203572960 U CN 203572960U CN 201320666085 U CN201320666085 U CN 201320666085U CN 203572960 U CN203572960 U CN 203572960U
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- 239000013078 crystal Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000004807 localization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005311 autocorrelation function Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model belongs to the field of positioning technology, and particularly to a positioning system. The positioning system provided by the utility model comprises a user terminal, a responder, a first base station, a second base station and a third base station. Positioning command is simultaneously transmitted to the three base stations through the user terminal, and then a range finding signal is transmitted out from each base station. The responder receives the range finding signal and determines whether the transmitting object of the range finding signal is the responder, and outwards transmits a responding signal after the range finding signal is confirmed. After each base station receives the responding signal, each base station calculates the distance between the base station and the responder according to the time interval between the time for transmitting out the range finding signal and the time for receiving the range finding signal. Furthermore the distance data are transmitted to the user terminal. The user terminal calculates the position of the responder relative to each base station according to the distance data, thereby finishing positioning. Because three-point-positioning technology is adopted, the positioning system is not easily interfered at indoor space. Furthermore because a passive structure is adopted for the responder, the responder has advantages of small volume and low cost.
Description
Technical field
The utility model belongs to field of locating technology, particularly a kind of positioning system.
Background technology
People are at home usually because can not find telepilot, key, and certificate etc., these thing volumes are little, easily lose, and but have very importantly, for looking for them, often delay a lot of time, sometimes even can not find requirement.Therefore, indoor positioning technology helps the thing that people find these to throw out without care fast everywhere.
The distance-finding method that current indoor positioning technology adopts has bluetooth, the Wi-Fi range finding of by detection signal strength, finding range, and has the ultrasonic ranging that obtains distance by ultrasound wave phase differential variation speed.But bluetooth, Wi-Fi range finding are easily subject to environment, the impact of weather etc. and interference; Ultrasonic ranging need to add LFM Source in receiver, causes transceiver volume large, can not be contained on pocket-handkerchief.
In addition, current location technology adopts directive antenna or aerial array to carry out orientation, and its antenna volume is very large, and cost is high.
In sum, there is the problem that volume greatly, is easily disturbed and cost is high in existing indoor locating system.
Utility model content
The purpose of this utility model is to provide a kind of positioning system, is intended to solve existing indoor locating system and has the problem that volume greatly, is easily disturbed and cost is high.
A kind of positioning system, described positioning system comprises:
Send positioning command, and receive the user terminal of the first range data, second distance data and the 3rd range data;
Receive and send according to distance measuring signal the transponder of answer signal;
With described transponder and described user terminal wireless connections, according to described positioning command, launch described distance measuring signal and receive described answer signal, described the first range data, described second distance data and described the 3rd range data are sent to respectively to the first base station, the second base station and the 3rd base station of described user terminal simultaneously;
Described transponder comprises:
Receive the receiving antenna of described distance measuring signal;
Power end is connected the output terminal of described receiving antenna with input end, the electric energy work that utilizes described distance measuring signal to provide, and according to the modulation-demodulation device of described distance measuring signal modulation answer signal;
Input end connects the output terminal of described modulation-demodulation device, launches the emitting antenna of described answer signal.
Further, described user terminal is mobile phone or TV.
Further, described transponder also comprises the gum that is arranged at described transponder surface.
Further, described the first base station, the second base station and the 3rd base station are identical base station;
Described base station comprises: range finding transceiver module, PN code generator, transmitter module and receiver module;
Described range finding transceiver module and described user terminal wireless connections, the output terminal of described range finding transceiver module is connected with the input end of described transmitter module, the input end of described range finding transceiver module is connected with the output terminal of described receiver module, and the output terminal of described PN code generator connects respectively the PN code receiving end of described transmitter module and the PN code receiving end of described receiver module.
Further, described modulation-demodulation device comprises:
Input end is the input end of described modulation-demodulation device, and the high frequency carrier described in filtering in distance measuring signal is also exported the low-pass filter of PN coded signal and identification signal;
Input end connects the output terminal of described low-pass filter, more described identification signal and default identification signal, and when described identification signal is identical with described default identification signal, export the comparison means of described PN coded signal;
Input end connects the output terminal of described comparison means, output terminal is the output terminal of described modulation-demodulation device, receive and described PN coded signal and described high frequency carrier are modulated to the described answer signal of generation, exporting the modulating apparatus of described emitting antenna simultaneously to;
The power end of the power end of described low-pass filter, the power end of described comparison means and described modulating apparatus connects the power end that forms described modulation-demodulation device altogether.
Further, described modulating apparatus comprises:
The first electric capacity, the second electric capacity, crystal oscillator, frequency multiplier and multiplier;
The first end of described the first electric capacity and the first end of described crystal oscillator are connected to the first input end of described frequency multiplier altogether, the second end of described crystal oscillator and the first end of described the second electric capacity are connected to the second input end of described frequency multiplier altogether, the second end of described the first electric capacity, the second end of described the second electric capacity and the earth terminal of described frequency multiplier are connected to ground altogether, the power end of described frequency multiplier and the power end of described multiplier connect the power end that forms described modulating apparatus altogether, the output terminal of described frequency multiplier connects the first input end of described multiplier, the second input end of described multiplier and output terminal are respectively input end and the output terminals of described modulating apparatus, the earth terminal ground connection of described multiplier.
Further, described positioning system also comprises and described transponder and described user terminal wireless connections, according to described positioning command, launches described distance measuring signal and receives described answer signal, sends four base station of the 4th range data to described user terminal simultaneously.
Positioning system provided by the utility model comprises described user terminal, described transponder, described the first base station, described the second base station and described the 3rd base station.By described user terminal, to three base stations, send described positioning command simultaneously, by each base station, externally send described distance measuring signal again, described transponder receives and judges whether the transmission object of described distance measuring signal is self, and is confirming the described answer signal of external transmission after described distance measuring signal.Each base station is receiving after described answer signal, according to launching described distance measuring signal and receiving the time interval calculating self of described answer signal and the distance of described transponder, and described range data is sent to described user terminal, by described user terminal, according to three described range data, calculate the position of described transponder with respect to each base station, thereby complete location.Owing to adopting the technology of three-point fix, even if described positioning system was interfered in indoor being also difficult for, and because described transponder adopts passive structures, make described transponder have advantages of that volume is little, cost is low.
Accompanying drawing explanation
Fig. 1 is the modular structure figure of the positioning system that provides of the utility model embodiment;
Fig. 2 is the modular structure figure of the base station that provides of the utility model embodiment;
Fig. 3 is the modular structure figure of the transponder that provides of the utility model embodiment;
Fig. 4 is the modular structure figure of the modulation-demodulation device that provides of the utility model embodiment;
Fig. 5 is the circuit structure diagram of the modulating apparatus that provides of the utility model embodiment;
Fig. 6 is the schematic diagram of the localization method of the positioning system that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Positioning system provided by the utility model comprises user terminal, transponder, the first base station, the second base station and the 3rd base station.Adopt the technology of three-point fix, even if positioning system was interfered in indoor being also difficult for, and because transponder adopts passive structures, make transponder have advantages of that volume is little, cost is low.
Fig. 1 shows the modular structure of the positioning system that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant to the utility model embodiment, and details are as follows:
The positioning system that the utility model embodiment provides comprises:
Send positioning command, and receive the user terminal 100 of the first range data, second distance data and the 3rd range data.
Receive and send according to distance measuring signal the transponder 200 of answer signal.
With transponder 200 and user terminal 100 wireless connections, according to positioning command, launch distance measuring signal and receive answer signal, the first range data, second distance data and the 3rd range data being sent to respectively to the first base station 300, the second base station 400 and the 3rd base station 500 of user terminal 100 simultaneously.
Further, as shown in Figure 2, transponder can comprise:
Receive the receiving antenna 201 of distance measuring signal.
Power end is connected the output terminal of receiving antenna 201 with input end, the electric energy work that utilizes distance measuring signal to provide, and according to the modulation-demodulation device 202 of distance measuring signal modulation answer signal.
Input end connects the output terminal of modulation-demodulation device 202, the emitting antenna 203 of transmitting answer signal.
Because transponder 200 is higher with the signal frequency of base station communication, can adopt very little PCB antenna further to reduce the volume of transponder 200.
Further, transponder 200 can also comprise the gum that is arranged at transponder 200 surfaces.By increase gum on transponder 200, make user transponder 200 can be pasted easily with various article on, as telepilot, mobile phone etc.From but these article can be found easily by transponder 200.
Further, user terminal 100 can be mobile phone or TV.After transponder 200 is positioned, positional information need to be presented on screen to guides user and goes for and seek.Because at present smart mobile phone and intelligent television have powerful hardware capability and software function, therefore can utilize the software and hardware resources of itself as user terminal 100.And, as mobile phone and TV, being generally all not easy to lose, user can position transponder 200 by these user terminals 100 at any time.
As the utility model one embodiment, the first base station 300, the second base station 400 and the 3rd base station 500 are identical base station.
As shown in Figure 3, base station can comprise: range finding transceiver module 301, PN code generator 302, transmitter module 303 and receiver module 304.
Range finding transceiver module 301 and user terminal 100 wireless connections, the output terminal of range finding transceiver module 301 is connected with the input end of transmitter module 303, the input end of range finding transceiver module 301 is connected with the output terminal of receiver module 304, and the output terminal of PN code generator 302 connects respectively the PN code receiving end of transmitter module 303 and the PN code receiving end of receiver module 304.
In the utility model embodiment, range finding transceiver module 301 is control chip, for calculating transponder 200 positions, can be the singlechip chip of 51 series or TI series.PN code generator 302 can consist of hardware, for example, D flip-flop and XOR gate, consist of, and also can by control chip, by software, be produced completely.Because this part belongs to prior art, do not repeat them here.
As the utility model one embodiment, as shown in Figure 4, modulation-demodulation device 202 can comprise:
Input end is the input end of modulation-demodulation device 202, and the high frequency carrier in filtering distance measuring signal is also exported the low-pass filter 2021 of PN coded signal and identification signal.
Input end connects the output terminal of low-pass filter 2021, relative discern signal and default identification signal, and when identification signal is identical with default identification signal, export the comparison means 2022 of PN coded signal.
Input end connects the output terminal of comparison means 2022, and output terminal is the output terminal of modulation-demodulation device 202, receives and PN coded signal and high frequency carrier are modulated to generation answer signal, exports the modulating apparatus 2023 of emitting antenna 203 to simultaneously.
The power end of the power end of low-pass filter 2021, the power end of comparison means 2022 and modulating apparatus 2023 connects the power end that forms modulation-demodulation device 202 altogether.
In the utility model embodiment, demodulating process adopt low-pass filter 2021 by carrier wave from distance measuring signal filtering, thereby obtain PN coded signal and identification signal wherein.Identification signal and default identification signal are all identification codes, and default identification signal is pre-stored within comparison means 2022.
As the utility model one embodiment, as shown in Figure 5, modulating apparatus 2023 can comprise:
The first capacitor C 1, the second capacitor C 2, crystal oscillator Q1, frequency multiplier U1 and multiplier U2.
The first end of the first end of the first capacitor C 1 and crystal oscillator Q1 is connected to the first input end P1 of frequency multiplier U1 altogether, the second end of crystal oscillator Q1 and the first end of the second capacitor C 2 are connected to the second input end P2 of frequency multiplier U1 altogether, the second end of the first capacitor C 1, the second end of the second capacitor C 2 and the earth terminal GND of frequency multiplier U1 are connected to ground altogether, the power end VCC of frequency multiplier U1 and the power end VCC of multiplier U2 meet the power end Vcc that forms modulating apparatus 2023 altogether, the output terminal OUT of frequency multiplier U1 connects the first input end IN1 of multiplier U2, the second input end IN2 of multiplier U2 and output terminal OUT are respectively input end and the output terminal of modulating apparatus 2023, the earth terminal GND ground connection of multiplier U2.
In the utility model embodiment, the process of signal modulation is that the signal that crystal oscillator Q1 produces produces high frequency carrier after frequency multiplier U1 frequency multiplication, then useful signal is added with multiplier U2.Frequency multiplier U1 can be that model is the frequency multiplication chip of MK3727, FS6128, P16CX100-35 or T83027A-02 etc., and multiplier U2 can be that model is the multiplication chip of AD834 or MLT04.
Distance-finding method and the localization method of positioning system the utility model embodiment being provided below in conjunction with Fig. 1 are described further:
Distance-finding method:
The range finding transceiver module 301 of base station receives after positioning command, by PN code generator 302, produces PN code and identification code, then by transmitter module 303, it is modulated in the lump in suitable frequency and is launched.Base station utilizes the significant correlation peak of autocorrelation function to identify the initial time of PN coded signal transmission, by receiver module 304, receiving after the answer signal that transponder 200 postbacks, by relevant to the PN coded signal in when transmitting the PN coded signal in answer signal, obtain another relevant peaks and identify its termination moment.Due to the transmission speed of electromagnetic wave in medium, oneself knows, by the measurement result of time delay, can be calculated the distance of target.
The speed of supposing Electromagnetic Wave Propagation is c, t1 is that base station transmitting distance measuring signal is to receiving answer signal T.T. used, t2 is base station transmit signals and the delay that receives signal, and t3 is that transponder 200 transmits and the delay that receives signal, and target to the distance of base station is:
Base station and transponder 200 transmit and can eliminate by calibrating with the delay that receives signal, and overall delay t1 can obtain by the autocorrelation performance of PN coded signal, c be known be the light velocity.Therefore base station can obtain apart from d, i.e. range data.
Localization method:
After the distance of known transponder 200, base station is issued user terminal 100 by range data and is further processed.User terminal 100 can position object by multiple measuring distances, i.e. multipoint positioning.As shown in Figure 6, suppose that the coordinate of three range finding base stations, two dimensional surface space is respectively A, B and C, the coordinate of transponder 200 is D.Take three base station coordinates points as the center of circle, the distance to transponder 200 recording take each base station is justified as radius respectively, and the intersection point of three circles is the position of target object.
The positioning system that the utility model embodiment provides comprises user terminal 100, transponder 200, the first base station 300, the second base station 400 and the 3rd base station 500.By user terminal 100, to three base stations, send positioning command simultaneously, more externally send distance measuring signal by each base station, transponder 200 receives and judges whether the transmission object of distance measuring signal is self, and is confirming the external answer signal that sends after distance measuring signal.Each base station is receiving after answer signal, according to launching distance measuring signal and receiving the time interval calculating self of answer signal and the distance of transponder 200, and this range data is sent to user terminal 100, by user terminal 100, according to three range data, calculate the position of transponder 200 with respect to each base station, thereby complete location.Owing to adopting the technology of three-point fix, even if positioning system was interfered in indoor being also difficult for, and because transponder 200 adopts passive structures, make transponder 200 have advantages of that volume is little, cost is low.
In another embodiment of the present utility model, positioning system can also comprise and transponder 200 and user terminal 100 wireless connections, according to positioning command, launch distance measuring signal and receive answer signal, sending four base station of the 4th range data to user terminal 100 simultaneously.
In the utility model embodiment, the 4th base station is the plane in the first base station 300, the second base station 400 and 500 places, the 3rd base station not.Utilize four base stations transponder 200 to be positioned simultaneously, just can obtain the position of target object in three dimensions.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a positioning system, is characterized in that, described positioning system comprises:
Send positioning command, and receive the user terminal of the first range data, second distance data and the 3rd range data;
Receive and send according to distance measuring signal the transponder of answer signal;
With described transponder and described user terminal wireless connections, according to described positioning command, launch described distance measuring signal and receive described answer signal, described the first range data, described second distance data and described the 3rd range data are sent to respectively to the first base station, the second base station and the 3rd base station of described user terminal simultaneously;
Described transponder comprises:
Receive the receiving antenna of described distance measuring signal;
Power end is connected the output terminal of described receiving antenna with input end, the electric energy work that utilizes described distance measuring signal to provide, and according to the modulation-demodulation device of described distance measuring signal modulation answer signal;
Input end connects the output terminal of described modulation-demodulation device, launches the emitting antenna of described answer signal.
2. positioning system as claimed in claim 1, is characterized in that, described user terminal is mobile phone or TV.
3. positioning system as claimed in claim 1, is characterized in that, described transponder also comprises the gum that is arranged at described transponder surface.
4. positioning system as claimed in claim 1, is characterized in that, described the first base station, the second base station and the 3rd base station are identical base station;
Described base station comprises: range finding transceiver module, PN code generator, transmitter module and receiver module;
Described range finding transceiver module and described user terminal wireless connections, the output terminal of described range finding transceiver module is connected with the input end of described transmitter module, the input end of described range finding transceiver module is connected with the output terminal of described receiver module, and the output terminal of described PN code generator connects respectively the PN code receiving end of described transmitter module and the PN code receiving end of described receiver module.
5. positioning system as claimed in claim 1, is characterized in that, described modulation-demodulation device comprises:
Input end is the input end of described modulation-demodulation device, and the high frequency carrier described in filtering in distance measuring signal is also exported the low-pass filter of PN coded signal and identification signal;
Input end connects the output terminal of described low-pass filter, more described identification signal and default identification signal, and when described identification signal is identical with described default identification signal, export the comparison means of described PN coded signal;
Input end connects the output terminal of described comparison means, output terminal is the output terminal of described modulation-demodulation device, receive and described PN coded signal and described high frequency carrier are modulated to the described answer signal of generation, exporting the modulating apparatus of described emitting antenna simultaneously to;
The power end of the power end of described low-pass filter, the power end of described comparison means and described modulating apparatus connects the power end that forms described modulation-demodulation device altogether.
6. positioning system as claimed in claim 5, is characterized in that, described modulating apparatus comprises:
The first electric capacity, the second electric capacity, crystal oscillator, frequency multiplier and multiplier;
The first end of described the first electric capacity and the first end of described crystal oscillator are connected to the first input end of described frequency multiplier altogether, the second end of described crystal oscillator and the first end of described the second electric capacity are connected to the second input end of described frequency multiplier altogether, the second end of described the first electric capacity, the second end of described the second electric capacity and the earth terminal of described frequency multiplier are connected to ground altogether, the power end of described frequency multiplier and the power end of described multiplier connect the power end that forms described modulating apparatus altogether, the output terminal of described frequency multiplier connects the first input end of described multiplier, the second input end of described multiplier and output terminal are respectively input end and the output terminals of described modulating apparatus, the earth terminal ground connection of described multiplier.
7. positioning system as claimed in claim 1, it is characterized in that, described positioning system also comprises and described transponder and described user terminal wireless connections, according to described positioning command, launch described distance measuring signal and receive described answer signal, send four base station of the 4th range data to described user terminal simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320666085.8U CN203572960U (en) | 2013-10-25 | 2013-10-25 | Positioning system |
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| CN201320666085.8U CN203572960U (en) | 2013-10-25 | 2013-10-25 | Positioning system |
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| CN203572960U true CN203572960U (en) | 2014-04-30 |
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| CN201320666085.8U Expired - Fee Related CN203572960U (en) | 2013-10-25 | 2013-10-25 | Positioning system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474838A (en) * | 2016-01-19 | 2018-08-31 | 三菱电机株式会社 | Location system and positioning method |
| CN113567920A (en) * | 2021-06-17 | 2021-10-29 | 中铁第四勘察设计院集团有限公司 | Three-dimensional positioning method for underground space |
-
2013
- 2013-10-25 CN CN201320666085.8U patent/CN203572960U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108474838A (en) * | 2016-01-19 | 2018-08-31 | 三菱电机株式会社 | Location system and positioning method |
| CN113567920A (en) * | 2021-06-17 | 2021-10-29 | 中铁第四勘察设计院集团有限公司 | Three-dimensional positioning method for underground space |
| CN113567920B (en) * | 2021-06-17 | 2023-10-31 | 中铁第四勘察设计院集团有限公司 | Three-dimensional positioning method for underground space |
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Effective date of registration: 20210721 Address after: Room 821, No. 333, jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou, Guangdong 510000 Patentee after: Skyworth Group Intelligent Technology Co.,Ltd. Address before: 510530 No.99, Kaida Road, Science City, Guangzhou Development Zone, Guangdong Province Patentee before: GUANGZHOU SKYWORTH FLAT DISPLAY TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 |