CN102087757A - Signal downlink method and device of electronic toll collection road side unit - Google Patents
Signal downlink method and device of electronic toll collection road side unit Download PDFInfo
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- CN102087757A CN102087757A CN 201010563166 CN201010563166A CN102087757A CN 102087757 A CN102087757 A CN 102087757A CN 201010563166 CN201010563166 CN 201010563166 CN 201010563166 A CN201010563166 A CN 201010563166A CN 102087757 A CN102087757 A CN 102087757A
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Abstract
The invention relates to a signal downlink method of an electronic toll collection road side unit and a function module structure for realizing the signal downlink method mainly by computer programs. The method comprises the following steps of: when not transacting with an on-board unit, if receiving a synchronous transaction command, synchronously transmitting a transaction signal to the lane; when transacting with the on-board unit of the lane, if receiving the synchronous transaction command, synchronously transmitting a disturbance signal to the lane so that other on-board units entering the lane at the moment do not analyze the transaction signal which is synchronously transmitted by a bypass road side unit. When the road side unit transacts with the on-board unit of the lane, the transaction between the other on-board units entering the lane and the bypass road side unit can be prevented.
Description
Technical field
The present invention relates to the signal downlink method and the main functional module construction of realizing this method by computer program of electric non-stop toll roadside unit.
Background technology
The electric non-stop toll station is provided with many tracks, and corresponding every track is provided with one or more roadside units (RSU).Board units (OBU) is established onboard.When car entered wherein a track, board units generally can be received the buying signals that this track roadside unit sends, and concluded the business after excited by buying signals to be waken up.If this track roadside unit does not send buying signals and the bypass side unit is sending buying signals just when car enters the track, then may cause board units mistakenly with the transaction of bypass side unit, cause and repeat to deduct fees, misplace consequences such as row, false alarm.
For this reason, notification number is that the patent documentation of CN201508576U has provided the technical scheme of employing synchronous generator (abbreviation synchronizer), its synchronizer sends the isochronous transaction order to roadside unit, allows each roadside unit synchronously send buying signals to its track, place.Because the buying signals that this roadside unit of close together sends significantly is better than the buying signals that distance bypass side unit far away sends, will can not conclude the business with the bypass side unit mistakenly with the transaction of this roadside unit so enter the board units in this track.
The problem that the technical scheme of employing synchronizer occurs in actual applications is, a roadside unit is when concluding the business with the board units in this track, if this moment, other board units also entered this track, because this roadside unit is concluded the business, so even this moment, synchronizer sent the isochronous transaction order, this roadside unit can not send buying signals more yet and set up another transaction, other board units that enters after therefore just probably because received the bypass side unit buying signals and mistakenly with other roadside unit transaction.
Summary of the invention
The technical problem to be solved in the present invention is: when roadside unit when concluding the business with the board units in this track, how to avoid entering other board units and the transaction of bypass side unit in this track.
Provide first method: the signal downlink method of electric non-stop toll roadside unit when not concluding the business with board units, if receive the isochronous transaction order, just synchronously sends buying signals to this track for this reason; When concluding the business with the board units in this track, if receive the isochronous transaction order, just synchronously send jammer signal to this track, can not resolve the buying signals of bypass side unit synchronized transmission with other board units that allows enter this track this moment.
Roadside unit if receive the isochronous transaction order, can't be ignored when concluding the business with the board units in this track, but synchronously sends jammer signal to this track.Because in this track, the jammer signal that this roadside unit of close together sends significantly is better than the buying signals that distance bypass side unit far away sends, though do not conclude the business with this roadside unit so enter other board units in this track this moment, but under the antagonism of jammer signal, also can not resolve the buying signals of bypass side unit synchronized transmission, also just can not conclude the business with the bypass side unit.
Provide second method, it is on the basis of above-mentioned first method, and the time that sends jammer signal is when the frame head of bypass side unit buying signals is sent out.
Provide the 3rd method, it is on the basis of above-mentioned first method, and the time that sends jammer signal is when the frame information of bypass side unit buying signals or postamble are sent out.
Provide the 4th method, it is on the basis of above-mentioned first or second method, and the buying signals coding between roadside unit and the board units adopts GB FM0 sign indicating number, and jammer signal is the continuous data " 0 " of GB FM0 sign indicating number.
Provide the 5th method, it is on the basis of above-mentioned the 4th method, and the time span of jammer signal is 32 μ s～200 μ s.
Provide the 6th method, it is on the basis of above-mentioned first method, and the buying signals coding between roadside unit and the board units adopts GB FM0 sign indicating number, and jammer signal is the continuous data " 0 " of GB FM0 sign indicating number.
Provide the 7th method, it is on the basis of above-mentioned the 6th method, and the time that sends jammer signal is when the frame head of bypass side unit buying signals is sent out.
Provide the 8th method, it is on the basis of above-mentioned the 6th method, and the time that sends jammer signal is when the frame information of bypass side unit buying signals or postamble are sent out.
Provide the 9th method, it is on the basis of the above-mentioned the 6th or the 7th method, and the time span of jammer signal is 32 μ s～200 μ s.
Given method, all or part of step wherein can be by setting up functional module construction, and system finishes by the computer program instructions control computer.These computer program instructions are stored in the computer-readable recording medium.Hereinafter provide according to the device of writing with the fully corresponding consistent mode of each step of described method, each ingredient in the device should be understood to realize each step of this method the functional module that must set up, the device that is limited by such one group of functional module should be understood to mainly realize the functional module construction of this corresponding method by computer program, and not should be understood to mainly realize by hardware mode the entity apparatus of this method.
Provide first device: the signal downlink device of electric non-stop toll roadside unit, comprise searcher, it is used for when not concluding the business with board units, if receive the isochronous transaction order, just synchronously sends buying signals to this track; Also comprise scrambling devices, it is used for when concluding the business with the board units in this track, if receive the isochronous transaction order, just synchronously send jammer signal to this track, can not resolve the buying signals of bypass side unit synchronized transmission with other board units that allows enter this track this moment; Also comprise GB FM0 code device, it is used to make the buying signals coding between roadside unit and the board units to adopt GB FM0 sign indicating number, and the jammer signal that scrambling devices is sent is the continuous data " 0 " of GB FM0 sign indicating number.It is in full accord corresponding to the 6th given method.
Provide second device, it is on the basis of above-mentioned first device, and the time that described scrambling devices sends jammer signal is when the frame head of bypass side unit buying signals is sent out.It is in full accord corresponding to the 7th given method.
Provide the 3rd device, it is on the basis of above-mentioned first device, and the time that described scrambling devices sends jammer signal is when the frame information of bypass side unit buying signals or postamble are sent out.It is in full accord corresponding to the 8th given method.
Provide the 4th device, it is on the basis of above-mentioned first or second device, and the time span of the jammer signal that described scrambling devices sends is 32 μ s～200 μ s.It is in full accord corresponding to the 9th given method.
Description of drawings
Fig. 1 is the communication conditions synoptic diagram of electric non-stop toll station and board units.
Fig. 2 is the coded data waveform example figure of GB FM0 sign indicating number.
Fig. 3 is the sequential chart of roadside unit synchronized transmission buying signals.
Fig. 4 is the sequential chart that roadside unit b upsets its bypass side unit buying signals frame head.
Fig. 5 is the sequential chart that roadside unit b upsets its bypass side unit buying signals frame information.
Fig. 6 is the sequential chart that roadside unit b upsets its bypass side unit buying signals postamble.
Embodiment
Electric non-stop toll station such as Fig. 1, three of A, B, C track is in the same way arranged, corresponding every track is provided with a roadside unit, buying signals coding between roadside unit and the board units adopts GB FM0 sign indicating number (the coded data waveform example of GB FM0 sign indicating number is seen Fig. 2), GB FM0 coded signal is arranged chronologically and is followed successively by wake-up signal, lead code, frame head, frame information and postamble, wake-up signal is used to wake up board units, the lead code carrier unit of buying car in installments carries out signal Synchronization, and frame head and postamble are used for allowing board units distinguish that frame information is in the residing position of sequential.Suppose to have a car to enter track B (board units 4 is arranged on it), and track A, C there are not car to enter.Synchronizer 3 sends the isochronous transaction order to roadside unit a, b, c, allows each roadside unit synchronously send buying signals to its track, place, and its sequential as shown in Figure 3.For track B, because it is nearest apart from roadside unit b, so the buying signals intensity that roadside unit a, c send is significantly smaller than the buying signals that is sent by roadside unit b.Therefore rate be introduced on the car of track B board units 4 will with roadside unit b transaction, and can not conclude the business with roadside unit a, c.
When roadside unit b concluded the business with board units 4, another car (board units 5 is arranged on it) had also entered track B, and this moment, track A, C did not have car to enter yet.Synchronizer 3 sends the isochronous transaction order to roadside unit a, b, c, and roadside unit a, c just synchronously send buying signals to its track, place, and roadside unit b is because carry out exchange just synchronously to send jammer signal to this track B with board units 4.Under GB FM0 coding rule, the frame head of the buying signals of roadside unit a, c transmission at this moment is " 01111110 ", and the duration is 32 μ s.Roadside unit b then preferably sends jammer signal when roadside unit a, c send the frame head of buying signals, as shown in Figure 4, benefit is to allow board units 5 can not resolve the frame head of the buying signals that roadside unit a, c send, and board units 5 just can not receive frame information and postamble subsequently.Because the data level "0" toggle frequency of GB FM0 sign indicating number is easier to be identified than data " 1 " high (referring to Fig. 2),, reach preferable upset effect so this jammer signal preferably adopts the continuous data " 0 " of GB FM0 sign indicating number.If the time ratio frame head that jammer signal continues is short, upsetting effect will be not ideal enough; If the time that jammer signal continues is oversize, will influence the transaction of ongoing roadside unit b and board units 4, take all factors into consideration, jammer signal is preferably selected a moderate time span, consider that GB FM0 frame head time span is 32 μ s, just to be preferably time span be 120 μ s (at the frame head of GB FM0 sign indicating number, it all is moderate that the jammer signal time span is got 32 μ s～200 μ s) to jammer signal in this example.
Non-preferentially, the time that sends jammer signal also can be (as Fig. 6) when (as Fig. 5) or postamble are sent out when the frame information of bypass side unit buying signals is sent out.
Buying signals coding between roadside unit and the board units and jammer signal coding also can all be used Guangdong mark Manchester code instead.
Incorgruous track also is suitable for said method.
The method that this paper provides, all or part of step wherein can be by setting up functional module construction, and system finishes by the computer program instructions control computer.These computer program instructions are stored in the computer-readable recording medium.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change and revise above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although used some specific terms in this instructions, these terms do not constitute any restriction to the present invention just for convenience of description.
Claims (9)
1. the signal downlink method of electric non-stop toll roadside unit, when not concluding the business with board units, if receive the isochronous transaction order, just synchronously send buying signals to this track, it is characterized in that, when concluding the business, if receive the isochronous transaction order with the board units in this track, just synchronously send jammer signal, can not resolve the buying signals of bypass side unit synchronized transmission with other board units that allows enter this track this moment to this track.
2. according to the signal downlink method of claim 1, it is characterized in that the time that sends jammer signal is when the frame head of bypass side unit buying signals is sent out.
3. according to the signal downlink method of claim 1, it is characterized in that the time that sends jammer signal is when the frame information of bypass side unit buying signals or postamble are sent out.
4. according to the signal downlink method of claim 1 or 2, it is characterized in that the buying signals coding between roadside unit and the board units adopts GB FM0 sign indicating number, jammer signal is the continuous data " 0 " of GB FM0 sign indicating number.
5. according to the signal downlink method of claim 4, it is characterized in that the time span of jammer signal is 32 μ s～200 μ s.
6. the signal downlink device of electric non-stop toll roadside unit, comprise searcher, it is used for when not concluding the business with board units, if receive the isochronous transaction order, just synchronously send buying signals to this track, it is characterized in that, also comprise scrambling devices, it is used for when concluding the business with the board units in this track, if receive the isochronous transaction order, just synchronously send jammer signal, can not resolve the buying signals of bypass side unit synchronized transmission with other board units that allows enter this track this moment to this track; Also comprise GB FM0 code device, it is used to make the buying signals coding between roadside unit and the board units to adopt GB FM0 sign indicating number, and the jammer signal that scrambling devices is sent is the continuous data " 0 " of GB FM0 sign indicating number.
7. according to the signal downlink device of claim 6, it is characterized in that the time that described scrambling devices sends jammer signal is when the frame head of bypass side unit buying signals is sent out.
8. according to the signal downlink device of claim 6, it is characterized in that the time that described scrambling devices sends jammer signal is when the frame information of bypass side unit buying signals or postamble are sent out.
9. according to the signal downlink device of claim 6 or 7, the time span of the jammer signal that described scrambling devices sends is 32 μ s～200 μ s.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105631666A CN102087757B (en) | 2010-11-24 | 2010-11-24 | Signal downlink method and device of electronic toll collection road side unit |
| MYPI2013001702A MY162824A (en) | 2010-11-24 | 2011-11-18 | Method and apparatus for electronic toll collection system road side unit signal downlink |
| PCT/CN2011/082491 WO2012068973A1 (en) | 2010-11-24 | 2011-11-18 | Method and apparatus for electronic toll collection system road side unit signal downlink |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105631666A CN102087757B (en) | 2010-11-24 | 2010-11-24 | Signal downlink method and device of electronic toll collection road side unit |
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| CN102087757A true CN102087757A (en) | 2011-06-08 |
| CN102087757B CN102087757B (en) | 2012-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068973A1 (en) * | 2010-11-24 | 2012-05-31 | 深圳市金溢科技有限公司 | Method and apparatus for electronic toll collection system road side unit signal downlink |
| CN109831764A (en) * | 2019-02-20 | 2019-05-31 | 北京云星宇交通科技股份有限公司 | A kind of method and system that the anti-monkey chatter suitable for OBU electronic tag is traded |
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| EP0917109A2 (en) * | 1997-11-07 | 1999-05-19 | Nec Corporation | Electronic toll collection system and method featuring antenna arrangement |
| JP3924774B2 (en) * | 2001-11-15 | 2007-06-06 | マツダ株式会社 | Vehicle travel support device |
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| EP0917109A2 (en) * | 1997-11-07 | 1999-05-19 | Nec Corporation | Electronic toll collection system and method featuring antenna arrangement |
| JP3924774B2 (en) * | 2001-11-15 | 2007-06-06 | マツダ株式会社 | Vehicle travel support device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012068973A1 (en) * | 2010-11-24 | 2012-05-31 | 深圳市金溢科技有限公司 | Method and apparatus for electronic toll collection system road side unit signal downlink |
| CN109831764A (en) * | 2019-02-20 | 2019-05-31 | 北京云星宇交通科技股份有限公司 | A kind of method and system that the anti-monkey chatter suitable for OBU electronic tag is traded |
| CN109831764B (en) * | 2019-02-20 | 2022-04-08 | 北京云星宇交通科技股份有限公司 | Method and system for adjacent channel interference resisting transaction suitable for OBU electronic tag |
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| CN102087757B (en) | 2012-11-28 |
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Owner name: SHENZHEN GENVICT TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHENZHEN JINYI TECHNOLOGIES CO., LTD. |
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Address after: Nanshan District Keyuan Road Shenzhen city Guangdong province 518057 Tsinghua building A building 12 layer Patentee after: SHENZHEN GENVICT TECHNOLOGY CO., LTD. Address before: 518057 R & D complex building, Tsinghua information port, North Zone, hi tech Zone, Guangdong, Shenzhen 808 Patentee before: Shenzhen Jinyi Technologies Co., Ltd. |