CN201646776U - Rail transit intelligent safety early warning system - Google Patents
Rail transit intelligent safety early warning system Download PDFInfo
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- CN201646776U CN201646776U CN2009202689526U CN200920268952U CN201646776U CN 201646776 U CN201646776 U CN 201646776U CN 2009202689526 U CN2009202689526 U CN 2009202689526U CN 200920268952 U CN200920268952 U CN 200920268952U CN 201646776 U CN201646776 U CN 201646776U
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Abstract
The utility model aims to solve the technical problem of providing a rail transit intelligent safety early warning system having the advantages of excellent directivity and adjustable recognition distance. The system comprises a signal processing module, an antenna module, a signal conditioning module and a shielding case, wherein the signal processing module is used for processing signals sent or received by the rail transit intelligent safety early warning system, the signal processing module comprises a processor, software is embedded in the processor, and the signal processing module can intelligently recognize and read the validity of identification cards and eliminate the influence of invalid cards and unstable card sensing distance on the system; the antenna module is used for receiving or sending wireless signals; the signal conditioning module is respectively connected with the signal processing module and the antenna module, and used for conditioning the power of exchange signals between the signal processing module and the antenna module; the shielding case is made from materials shielding the electromagnetic field, and is provided with a directivity signal opening; the antenna module is encapsulated in the shielding case and arranged corresponding to the signal opening.
Description
Technical field
The utility model relates to a kind of intelligent track-traffic security early-warning system.
Background technology
Along with progress, the science and technology development of society, people's life is more and more convenient, and people wish to reach the demand of intelligent track-traffic security early-warning system by scientific and technical means.Present IrDA infrared ray, technology such as Wi-Fi, NFC, UWB, bar code all attempt being used in intelligent track-traffic security early-warning system, but because the defective on its technological characteristics, these technology all can not satisfy the application demand of intelligent track-traffic security early-warning system directly, completely, and its analysis of causes is as follows.
In track traffic when train driving to some key position point as track switch, anxious corner, need chaufeur to do some corresponding operations during tail track etc. or train is finished certain operations automatically, this can discern the run location of train with regard to needing, implementation is as follows: on above-mentioned key position point identification card is installed, the identification read head is installed ON TRAINS, the identification read head reads the information of identification card when train process identification card position, the identification read head just can be finished some preset operation automatically, these operations include but not limited to voice suggestion, sound and light alarm, with the control command of train system interlock etc., this recognition system must be able to solve the mutual interference problem between the multiple parallel track, so the optimal communication modes of short-distance wireless communication that intelligent track-traffic security early-warning system requires preferably can satisfy following characteristics simultaneously:
1) radio communication is generally 0 to 30 meter of distance;
2) only allow a receiving-transmitting sides intra-area communication in one direction in three-dimensional space, receiving-transmitting sides does not all receive the signal of other direction.
3) allow to have some obstacle between the receiving-transmitting sides, as rainwater etc., to avoid the influence of weather, environment etc.
4) receiving-transmitting sides can proper communication under 0 to 80 kilometer/hour moving velocity for debit or originating party.
As adopt the IrDA infrared technology, then can satisfy the above-mentioned the 1st), 2) two requirements, but do not satisfy the requirement of the 3rd point in the 1st, if promptly have shelter even rainwater all can interrupt data communication between the receiving-transmitting sides between the receiving-transmitting sides, if the signal window of receiving-transmitting sides is covered by dust and also can interrupt data communication in addition.
And if adopt the mode of other several short-distance wireless communication technologies, though can satisfy 1), 3) and 4) point, all can't satisfy the above-mentioned the 2nd) the some requirement.This be because common radiowave to propagate in the space be the propagation of sphere to all the winds, be difficult to realize the above-mentioned the 2nd) put requirement to the rectilinear direction and the decipherment distance spacing of radio wave propagation.
The utility model content
In view of this, technical problem to be solved in the utility model provides a kind of intelligent track-traffic security early-warning system with good directivity.
The purpose of this utility model is achieved through the following technical solutions:
A kind of intelligent track-traffic security early-warning system comprises:
Signal processing module, be used to handle the signal that described intelligent track-traffic security early-warning system sends or receives, signal processing module contains treater, embed in the treater software is arranged, the validity of the identification card of can Intelligent Recognition reading is got rid of the influence that invalid card and card distance of reaction instability are brought to system;
Anneta module is used for receiving or sending wireless signal;
Signal-adjusting module connects described signal processing module and Anneta module respectively, is used to regulate the power of switching signal between described signal processing module and the Anneta module; And,
Screening can, employing has the material that electromagnetic field is shielded makes, and has the signal opening of a directivity, and described Anneta module is encapsulated in this screening can, and is provided with facing to described signal opening.
Wherein, the material that electromagnetic field is shielded is meant conductor material, as materials such as metal, alloy or graphite.In specific embodiment, can do corresponding selection according to its different requirements to performance.
Wherein, directivity is meant that the signal opening is arranged on the ad-hoc location of screening can, with satisfy have one specific towards.
Adopt technique scheme, because the shielding of described screening can, exterior radio signal has only the interior cavity direction of injecting this screening can from the signal opening, could be received by Anneta module.Simultaneously, through actual experiment, by the radio signal that described antenna element sent, its directivity also is better than not adding the embodiment of screening can greatly.
Experiment confirm is compared with the situation of having removed screening can, no matter is vertical characteristics or lateral characteristics, and the embodiment with screening can has shown the farther good directivity that is.Because have the advantage on this directivity, technique scheme can better realize the optimal communication modes of short-distance wireless communication of intelligent track-traffic security early-warning system requirement.
The directivity of the radio signal of receiving and dispatching for the intelligent track-traffic security early-warning system that improves technique scheme, can also also can adopt the mode of the area of corresponding minimizing signal opening by corresponding lengthening by the mode of signal opening to distance the Anneta module that is arranged in the screening can.
Preferably, described Anneta module adopts: along several patch array antenna of plane symmetry setting.
Wherein, both patch array antenna that can be all was provided with at grade, also can be divided into fractions and not be arranged on several planes that stack that are parallel to each other.
Adopt abovementioned technology, the cost of patch array antenna is lower, and the directivity of its emitted radio signal is also better.
Preferably, the quantity of described patch array antenna is 8.
Through evidence, under the requirement of certain volume, 8 patch array antenna that are symmetrical arranged at grade, the sensitivity of the transmitting-receiving of its wireless signal is higher.
Preferably, the back of described patch array antenna is provided with reflecting plate, and described reflecting plate is electrically connected with the ground reference of described Anneta module.
Further, all described patch array antenna are arranged on the front in the face of the pcb board of described signal opening setting, and described reflecting plate adopts the copper that covers on the back side that invests this pcb board.
Further adopt abovementioned technology, can realize, further reduced production cost by two layers of common pcb board.
Among another embodiment, described patch array antenna is separately positioned on, and at least two fronts in the face of the pcb board of described signal opening setting that are arranged in order, described reflecting plate adopts the copper that covers on the back side that invests this pcb board.
Further adopt abovementioned technology, because the stack multilayer can realize littler signal angle with the pcb board of patch array antenna, the pcb board that promptly is pasted with patch array antenna sends or the angle of received signal in the horizontal and vertical directions.This embodiment is particularly suitable for directivity is required higher, in the limited application of cost and antenna volume simultaneously.
Preferably, the signal angle of described patch array antenna is less than 60 degree.
Preferably, described signal processing module adopts 2.4GHz to 2.5GHz frequency range.
Preferably, described signal-adjusting module adopts wireless signal decay chip, and the amplitude of the signal attenuation of described wireless signal decay chip is 0 to 31 decibel, and signal attenuation can be regulated continuously.
Owing to further adopt abovementioned technology, can control the communication distance on the communication direction more convenient, more accurately, simultaneously, in general, the insertion loss of wireless signal decay chip is low, and it is also wider to adapt to frequency limit.
Preferably, described signal processing module, Anneta module and signal-adjusting module successively layering stack and be arranged in the described screening can.
Advantage compared with prior art of the present utility model is, can be with good directivity transmitting/receiving wireless electric signal, can be desirable be applied to track traffic short-distance wireless communication occasion.
Meanwhile cooperate the function of path recognition of signal processing module can further strengthen the reliability of track traffic safety pre-warning system, specify as follows: in the track traffic safety pre-warning system, article one, it is pre-determined needing the quantity and the position of the identification card installed on the track, therefore also determined an identification card path with regard to unique, treater in the signal processing module can be determined or this unmodified routing information of self study in advance, when signal processing module has obtained the identification card in non-this path, signal processing module is the identification card information of this interference of filtering automatically, gets rid of the influence that invalid card and card distance of reaction instability are brought to system.
Description of drawings
Fig. 1 a, Fig. 1 b have removed among the embodiment of screening can the lobe pattern of the wireless signal that is sent for one;
Fig. 2 a, Fig. 2 b are among the utility model one embodiment, the lobe pattern of the wireless signal that it sent;
Fig. 3 is the scheme drawing of mutual transmitting/receiving wireless electric signal among the utility model one embodiment;
Fig. 4 is the assembling scheme drawing of each parts among the utility model one embodiment;
Fig. 5 is the structural representation of antenna element among the utility model one embodiment;
Fig. 6 is the explanation scheme drawing of environment for use among the utility model one embodiment.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and preferred embodiment.
As shown in Figure 3, intelligent track-traffic security early-warning system comprises: the signal processing module 100 that is used to handle the signal that described intelligent track-traffic security early-warning system sends or receive; Be used to receive or send the Anneta module 200 of wireless signal; Connect described signal processing module 100 and Anneta module 200 respectively, be used to regulate the signal-adjusting module 300 of the power of switching signal between described signal processing module 100 and the Anneta module 200, and, employing has the material that electromagnetic field is shielded and makes, signal opening 410 with a directivity, described Anneta module 200 is encapsulated in this screening can 400, and faces toward the screening can 400 that described signal opening 410 is provided with.
Two directed wireless transceiver systems, its signal opening 410 is set up respectively relatively, with transmitting/receiving wireless electric signal each other.
As shown in Figure 4, described signal processing module 100, Anneta module 200 and signal-adjusting module 300 successively layering stack and be arranged in the described screening can 400.
Wherein, described screening can 400 adopts metallic material to make.
Anneta module 200 as shown in Figure 5, it comprises a plurality of patch array antenna 210, all patch array antenna are all in a plane.The length and width of each patch array antenna and the spacing between it follow according to institute's wireless signal wavelength of launching or receiving decide, each a period of time wire length decide according to required antenna impedance.If want to realize patch array antenna signal angle more I realize with the patch array antenna of stack multilayer.In addition, in the back of patch array antenna a reflecting plate is arranged preferably, reflecting plate also is the ground reference of aerial signal.
Patch array antenna can invest common pcb board and realize, and so only needs common two laminates to get final product, and patch array antenna is adhered in its front, and the copper that covers at the back side is used as reflecting plate.
Patch array antenna also has the characteristics of good directionality in addition, the signal angle of patch array antenna is less than 60 degree, if stack multiple tier array antenna plate can realize littler signal angle, so patch array antenna is particularly suitable for directivity is required the application high, that cost is low, antenna volume is limited.
In addition, be rectangular purpose in order to reach identified region, find that through the overtesting contrast press the Anneta module of 8 patch array antenna forms of 4 * 2 rectangular arranged, its effect is best.
Wherein, Fig. 1 a, Fig. 1 b, Fig. 2 a, Fig. 2 b are respectively the lobe patterns of the wireless signal that is sent that adopts the different embodiment of above-mentioned Anneta module, do not have screening can among the embodiment of Fig. 1 a, Fig. 1 b, have screening can among the embodiment of Fig. 2 a, Fig. 2 b.
From illustrated in figures 1 and 2, can significantly find out to have the embodiment of screening can, the transmitting-receiving of wireless signal has better directivity, and this advantage has very large value in controls of traffic and road arranged side by side are used as many.
Among the embodiment, signal processing module 100 can adopt short-distance wireless communication technology as shown in Figure 6, for example can select 2.4GHz to 2.5GHz Bluetooth communication chip, and this mode is a global general-use, need not apply for the usage license.
In general, the track traffic applied environment has characteristics, that be exactly track all be strip shape, and long and narrow.To adopt intelligent track-traffic security early-warning system identified region of the present utility model to be designed to the oblong of mating with trade shape, will improve the stability and the reliability of identification, and can also effectively solve as, face the mutual interference of track phase mutually, the problems such as phase mutual interference of car before and after the same track.
In this application mode, respective track traffic intelligent safety pre-warning system is arranged on A place shown in Figure 6, specifically, intelligent track-traffic security early-warning system as identification card can be positioned over certain fixed position, side of track, this position can be signal lamp, corner or other key position that need do warning, handle.In addition an intelligent track-traffic security early-warning system is installed and fixed ON TRAINS as the identification read head.
Adopt wireless mode to communicate by letter between identification read head and the identification card, identification card adopts source technology, Card Reader is stable, highly sensitive, the identification read head need not power transfer and collects, emissive power is low, guarantee the electromagnetic radiation safety of human body and environment, radio communication function can adopt a lot of frequency ranges to realize, the existing a lot of radio communication bottom modules of technical field can be selected at present, and technology is all very ripe, for example may use the wireless communication chips of NORDIC Northern Europe semiconductor company of 2.4GHz to 2.5GHz Bluetooth technology frequency range.
When train when the key position of identification card has been installed in advance, just can export as voice acousto-optic or other signal alarm after the identification read head has recognized identification card, perhaps control any operation of the needs that some equipment etc. designs accordingly in advance.
Technique scheme has improved reliability and the anti-multipath interference capability of identification, and identification card is put in any form and can both be stablized Card Reader and the Card Reader distance is undamped, satisfies the application demand of track traffic fully.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (9)
1. an intelligent track-traffic security early-warning system is characterized in that, comprising:
Signal processing module (100) is used to handle the signal that described intelligent track-traffic security early-warning system sends or receives;
Anneta module (200) is used for receiving or sending wireless signal;
Signal-adjusting module (300) connects described signal processing module (100) and Anneta module (200) respectively, is used to regulate the power of switching signal between described signal processing module (100) and the Anneta module (200); And,
Screening can (400), employing has the material that electromagnetic field is shielded makes, and has the signal opening (410) of a directivity, and described Anneta module (200) is encapsulated in this screening can (400), and is provided with facing to described signal opening (410).
2. intelligent track-traffic security early-warning system as claimed in claim 1 is characterized in that, described Anneta module (200) adopts symmetrically arranged several patch array antenna (210) along the plane.
3. intelligent track-traffic security early-warning system as claimed in claim 2 is characterized in that, the quantity of described patch array antenna (210) is 8.
4. intelligent track-traffic security early-warning system as claimed in claim 2 is characterized in that, the back of described patch array antenna (210) is provided with reflecting plate, and described reflecting plate is electrically connected with the ground reference of described Anneta module (200).
5. intelligent track-traffic security early-warning system as claimed in claim 4 is characterized in that, described signal processing module (100) adopts 2.4GHz to 2.5GHz frequency range.
6. intelligent track-traffic security early-warning system as claimed in claim 4, it is characterized in that, all described patch array antenna (210) are arranged on the front in the face of the pcb board of described signal opening (410) setting, and described reflecting plate adopts the copper that covers on the back side that invests this pcb board.
7. intelligent track-traffic security early-warning system as claimed in claim 4, it is characterized in that, described patch array antenna (210) is separately positioned on, on at least two fronts in the face of the pcb board of described signal opening (410) setting that are arranged in order, described reflecting plate adopts the copper that covers on the back side that invests this pcb board.
8. intelligent track-traffic security early-warning system as claimed in claim 1, it is characterized in that, described signal-adjusting module (300) adopts wireless signal decay chip, and the amplitude of the signal attenuation of described wireless signal decay chip is 0 to 31 decibel, and signal attenuation can be regulated continuously.
9. as the described intelligent track-traffic security early-warning system of arbitrary claim in the claim 1 to 8, it is characterized in that described signal processing module (100), Anneta module (200) and signal-adjusting module (300) layering successively stack and be arranged in the described screening can (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202689526U CN201646776U (en) | 2009-10-15 | 2009-10-15 | Rail transit intelligent safety early warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202689526U CN201646776U (en) | 2009-10-15 | 2009-10-15 | Rail transit intelligent safety early warning system |
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| Publication Number | Publication Date |
|---|---|
| CN201646776U true CN201646776U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202689526U Expired - Fee Related CN201646776U (en) | 2009-10-15 | 2009-10-15 | Rail transit intelligent safety early warning system |
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| CN (1) | CN201646776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514600A (en) * | 2011-12-26 | 2012-06-27 | 天津开发区文博电子有限公司 | Passive ground sensor code defining and arranging method for railway locomotive dispatch monitoring system |
| CN103679233A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Locomotive locating system and method based on radio frequency identification technology |
| CN105979533A (en) * | 2016-04-08 | 2016-09-28 | 广州地铁集团有限公司 | Beacon based information interaction system and method for preventing signal interference of sidelobe region and crosstalk region |
-
2009
- 2009-10-15 CN CN2009202689526U patent/CN201646776U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514600A (en) * | 2011-12-26 | 2012-06-27 | 天津开发区文博电子有限公司 | Passive ground sensor code defining and arranging method for railway locomotive dispatch monitoring system |
| CN103679233A (en) * | 2013-12-12 | 2014-03-26 | 中国神华能源股份有限公司 | Locomotive locating system and method based on radio frequency identification technology |
| CN105979533A (en) * | 2016-04-08 | 2016-09-28 | 广州地铁集团有限公司 | Beacon based information interaction system and method for preventing signal interference of sidelobe region and crosstalk region |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20111015 |