CN103905995A - Data and clock synchronous signal transmission method in ultra-bandwidth indoor positioning system - Google Patents
Data and clock synchronous signal transmission method in ultra-bandwidth indoor positioning system Download PDFInfo
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- CN103905995A CN103905995A CN201410122433.4A CN201410122433A CN103905995A CN 103905995 A CN103905995 A CN 103905995A CN 201410122433 A CN201410122433 A CN 201410122433A CN 103905995 A CN103905995 A CN 103905995A
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Abstract
The invention discloses a data and clock synchronous signal transmission method in an ultra-bandwidth indoor positioning system. According to the specific method, data and cloth synchronous signals are transmitted between base stations and a positioning engine and between the base stations in a chain mode through network cables. The engine is connected with the base stations and the base stations are connected with one another in a chain mode through the network cables. Four twisted pairs in the network cables are divided and have two purposes, wherein two twisted pairs have access to a differential signal receiving and sending module to transmit data, and the other two twisted pairs, namely, four wires, transmit clock synchronous signals. By means of the method, the data and the clock synchronous signals are transmitted between the engine and the four base stations in the chain mode through the network cables.
Description
Technical field
The present invention relates to indoor positioning technology, relate in particular to a kind of data and clock sync signal transmission method in super bandwidth indoor locating system.
Background technology
Global navigation satellite cannot provide indoor hi-Fix.And the indoor orientation methods such as WIFI location based on received signal strength method (RSSI), Zigibee location and bluetooth location can only provide the precision of several meters, and be subject to environmental interference.In recent years, the indoor positioning research based on super bandwidth (UWB) becomes focus, and its feature up to Centimeter Level precision makes it in the application such as personnel positioning and equipment location, have bright prospects.
Super bandwidth indoor positioning technology conventionally adopts and arrives time difference method (TDOA) calculating label in indoor position.Arrive the moment of each synchronising base station by recording super burst pulse ripple that label sends, and record the moment and upload to engine of positioning by data packet form and resolve to obtain the time difference that any a pair of base station is surpassed burst pulse ripple and triggers each, further resolve to obtain the real time position of label.
The prerequisite of location is that each base station data is reliably uploaded in real time; The guarantee of hi-Fix is necessary strict real-time synchronization of the benchmark moment of each base station, to obtain time difference accurately.Therefore, data and clock sync signal are very crucial in the transmission between base station and base station, between base station and engine of positioning.
Summary of the invention
The present invention proposes a kind of taking netting twine as medium, the transmission method of chain transmission indoor positioning system data and clock sync signal, can meet the requirement of super bandwidth indoor locating system to real-time data transmission, clock sync signal real time down, have and transmit reliably, lay easy feature.
Between base station on described every chain and base station, adopt netting twine to be connected, between base station and engine of positioning, also adopt netting twine to be connected.Can on a netting twine, transmit data and clock sync signal by following design: the two pairs of twisted-pair feeders are wherein respectively used to the uplink and downlink of data, the differential signal transceiver module of access engine of positioning or base station simultaneously; Be that four wires are used for the clock synchronous between engine of positioning and maximum four base stations by two pairs of twisted-pair feeders of residue, the access clock source of engine of positioning or the clock synchronization module of base station.
In technique scheme, described engine of positioning has a clock source, a pair of differential data transceiver module.Periodically issue clock sync signal for the each base station to each chain; Sending and receiving is from the data on each chain simultaneously.
In technique scheme, described base station has a clock synchronization module, two pairs of differential data transceiver modules.Belong to the clock sync signal of several base stations below for receiving synchronizing signal with synchronous this base station clock and forwarding; While transceiving data up and down.
In technique scheme, described data comprise locator data bag, control command bag, node configuration parameter bag, test command bag.
In technique scheme, described clock sync signal comprises recurrent pulses and code signal.
The present invention uses the super bandwidth indoor locating system of TDOA method to design a kind of data and clock sync signal transmission method, utilizes single netting twine between engine of positioning and base station, transmit data field clock sync signal between base station and base station simultaneously.Realize the chain transmission of data field clock sync signal.Solve that data in super bandwidth indoor locating system are reliably uploaded, a difficult problem for clock sync signal real time down, and had that transmission is reliable, the easy feature of constructing.
Brief description of the drawings
Fig. 1 is super bandwidth indoor locating system structured flowchart;
Fig. 2 is a transmission structure schematic diagram on chain.
Embodiment
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other similar scheme.
In a set of super bandwidth indoor locating system (referring to accompanying drawing 2), engine of positioning 1 has two data and clock sync signal chain (2,3).On chain 2, chain has connected four locating base station 4, can form three-dimensional indoor locating system; On chain 3, chain has connected 3 locating base station 4, can form two-dimentional indoor locating system.Chain 2 and 3 can form the indoor locating system in larger region jointly.
In a complete chain 2 (referring to accompanying drawing 1), on chain 2, engine of positioning 1 is connected with base station one 4-1 by netting twine 5, base station one 4-1 is connected with base station two 4-2 by netting twine 5, base station two 4-2 are connected with base station three 4-3 by netting twine 5, and base station three 4-3 are connected with base station four 4-4 by netting twine 5.
Engine of positioning 1 is by clock source module 6, and Jiang Si road synchronizing clock signals is issued to the clock synchronization module 8-1 of base station one 4-1 by two pairs of twisted-pair feeders 7.
Base station one 4-1 is the clock synchronous for this base station by a road clock sync signal wherein, residue three road clock sync signals is connected to the twisted-pair feeder 7 of incoming clock synchronization module 8-2 by the wire 9 in this base station.Base station two 4-2 are the clock synchronous for this base station by a road clock sync signal wherein, residue two-way clock sync signal is connected to the twisted-pair feeder 7 of incoming clock synchronization module 8-3.Base station three 4-3 are the clock synchronous for this base station by a road clock sync signal wherein, residue one road clock sync signal is connected to the twisted-pair feeder 7 of incoming clock synchronization module 8-4.Base station four 4-4 are the clock synchronous for this base station by the clock sync signal receiving.
Engine of positioning 1 uses differential data transceiver module 10-1 to communicate by letter with the differential data transceiver module 10-2 of base station one 4-1 by netting twine 5, base station one 4-1 uses differential data transceiver module 10-3 to communicate by letter with the differential data transceiver module 10-4 of base station two 4-2 by netting twine 5, base station two 4-2 use differential data transceiver module 10-5 to communicate by letter with the differential data transceiver module 10-6 of base station three 4-3 by netting twine 5, and base station three 4-3 use differential data transceiver module 10-7 to communicate by letter with the differential data transceiver module 10-8 of base station four 4-4 by netting twine 5.In above communication, locator data bag, control command bag, node configuration parameter bag, test command bag data are chain transmission transmission between four base stations 4 and engine of positioning 1.
Claims (6)
1. surpass a kind of data and clock sync signal transmission method in bandwidth indoor locating system, it is characterized in that: use netting twine chain between base station and engine of positioning, base station and base station to transmit data and clock sync signal, between engine of positioning and base station, be connected by netting twine chain between base station and base station.
2. a kind of data and clock sync signal transmission method in super bandwidth indoor locating system according to claim 1, it is characterized in that: four pairs of twisted-pair feeders in described netting twine are divided into two kinds of purposes: wherein two pairs of twisted-pair feeder access differential signal receiving modules, to transmit data; Other two pairs of twisted-pair feeders i.e. four wire transmission clock sync signals.
3. a kind of data and clock sync signal transmission method in super bandwidth indoor locating system according to claim 1, is characterized in that: described data comprise locator data bag, control command bag, node configuration parameter bag, test command bag.
4. a kind of data and clock sync signal transmission method in super bandwidth indoor locating system according to claim 1, is characterized in that: described clock sync signal comprises recurrent pulses and code signal.
5. a kind of data and clock sync signal transmission method in super bandwidth indoor locating system according to claim 1, is characterized in that: described base station has a clock synchronization module, two pairs of differential data transceiver modules.
6. a kind of data and clock sync signal transmission method in super bandwidth indoor locating system according to claim 1, is characterized in that: described engine of positioning has a clock source module, a pair of differential data transceiver module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410122433.4A CN103905995A (en) | 2014-03-28 | 2014-03-28 | Data and clock synchronous signal transmission method in ultra-bandwidth indoor positioning system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410122433.4A CN103905995A (en) | 2014-03-28 | 2014-03-28 | Data and clock synchronous signal transmission method in ultra-bandwidth indoor positioning system |
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| CN103905995A true CN103905995A (en) | 2014-07-02 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044664A (en) * | 2015-06-18 | 2015-11-11 | 深圳市润安科技发展有限公司 | Supervision-place forbidden zone management and control method and system |
| CN105095930A (en) * | 2015-06-18 | 2015-11-25 | 深圳市润安科技发展有限公司 | Method and system for managing supervision place materials |
| CN105897330A (en) * | 2016-04-01 | 2016-08-24 | 严炜 | Signal synchronization method used for UWB high-precision positioning system |
| CN107295632A (en) * | 2017-04-28 | 2017-10-24 | 四川中电昆辰科技有限公司 | Alignment system and the isochronous controller group network system for alignment system |
| CN108882357A (en) * | 2018-06-06 | 2018-11-23 | 成都精位科技有限公司 | Positioning device, method and system based on power line carrier communication |
| CN109085789A (en) * | 2017-06-13 | 2018-12-25 | 郑州联睿电子科技有限公司 | The intelligent management system positioned based on ultra wide band and iBeacon high-precision three-dimensional |
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2014
- 2014-03-28 CN CN201410122433.4A patent/CN103905995A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044664A (en) * | 2015-06-18 | 2015-11-11 | 深圳市润安科技发展有限公司 | Supervision-place forbidden zone management and control method and system |
| CN105095930A (en) * | 2015-06-18 | 2015-11-25 | 深圳市润安科技发展有限公司 | Method and system for managing supervision place materials |
| CN105897330A (en) * | 2016-04-01 | 2016-08-24 | 严炜 | Signal synchronization method used for UWB high-precision positioning system |
| CN107295632A (en) * | 2017-04-28 | 2017-10-24 | 四川中电昆辰科技有限公司 | Alignment system and the isochronous controller group network system for alignment system |
| CN107295632B (en) * | 2017-04-28 | 2019-03-29 | 四川中电昆辰科技有限公司 | Positioning system and isochronous controller group network system for positioning system |
| CN109085789A (en) * | 2017-06-13 | 2018-12-25 | 郑州联睿电子科技有限公司 | The intelligent management system positioned based on ultra wide band and iBeacon high-precision three-dimensional |
| CN108882357A (en) * | 2018-06-06 | 2018-11-23 | 成都精位科技有限公司 | Positioning device, method and system based on power line carrier communication |
| CN108882357B (en) * | 2018-06-06 | 2021-06-22 | 成都精位科技有限公司 | Positioning device, method and system based on power line carrier communication |
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Application publication date: 20140702 |