CN103164876A - Device and method for controlling transaction area in ETC - Google Patents
Device and method for controlling transaction area in ETC Download PDFInfo
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- CN103164876A CN103164876A CN2011104123825A CN201110412382A CN103164876A CN 103164876 A CN103164876 A CN 103164876A CN 2011104123825 A CN2011104123825 A CN 2011104123825A CN 201110412382 A CN201110412382 A CN 201110412382A CN 103164876 A CN103164876 A CN 103164876A
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Abstract
The application provides a device and a method for controlling a transaction area in ETC. The device comprises: a roadside microwave antenna and a signal transmitter; the three signal transmitters are respectively positioned on two sides and above the roadside microwave antenna; the roadside microwave antenna and the signal transmitter transmit signals with the same or similar frequency; a signal irradiation area of the roadside microwave antenna covers a target transaction area; the signal irradiation area of the signal emitter is located at the edge of the target transaction area, and the signal intensity is stronger than that of the roadside microwave antenna at the edge of the target transaction area. The method and the device can effectively control the transaction area within the target transaction area.
Description
Technical field
The application relates to the electric non-stop toll field, particularly relates to the device of controlling the transaction zone in a kind of ETC, and a kind of control the transaction zone in ETC method.
Background technology
ETC (Electronic Toll Collection, electronic charging system without parking) be state-of-the-art Fare Collection System in the world at present, be one of service function of intelligent transportation system, vehicular traffic need not stop during by the road junction, namely can realize automatic charging.During existing ETC uses, controlling the regional implementation of transaction is to rely on to control RSU (Rate-Sensor Unit, roadside unit) direction of illumination, the angle of upper antenna coordinate OBU (On Board Unit, electronic tag) to be adjusted to suitable receiving sensitivity.In actual conditions, outside the main range of exposures due to antenna, the signal in main range of exposures can't can occur being weaker than, the OBU aspect again due to brand difference and individual difference, causes the power of receiving sensitivity to differ simultaneously with avoiding.Based on above two reasons, in actual applications, often still can go out the transaction situation outside desired regions, therefore, the method for this simple control area can not meet the desired effect.
Therefore, need at present the technical matters that those skilled in the art solve to be exactly, the controlling mechanism in transaction zone is provided in a kind of ETC, the transaction zone is controlled in the target transaction zone effectively.
Summary of the invention
The application provides in a kind of ETC the device of controlling the transaction zone, and the transaction zone is controlled in the target transaction zone effectively.
The application also provides a kind of control the transaction zone in ETC method, in order to guarantee said method application and realization in practice.
In order to address the above problem, the application discloses the device of controlling the transaction zone in a kind of ETC, comprising:
Trackside microwave antenna and signal projector;
Described signal projector has three, lays respectively at both sides and the top of described trackside microwave antenna;
Described trackside microwave antenna is launched the signal of identical or close frequencies with signal projector;
The signal irradiation area coverage goal transaction zone of described trackside microwave antenna;
The signal irradiation area of described signal projector is positioned at the edge in target transaction zone, and signal intensity is better than described trackside microwave antenna in the signal intensity at the edge in described target transaction zone.
Preferably, described target transaction zone is positioned at the ETC track.
Preferably, the signal irradiation area of the described signal projector edge that is positioned at the target transaction zone comprises:
The signal irradiation area of the signal projector of trackside microwave antenna both sides is positioned at the both sides in target transaction zone, and the signal irradiation area of the signal projector above the trackside microwave antenna is positioned at the end away from the trackside microwave antenna in target transaction zone.
Preferably, described device also comprises:
Controller is for send simultaneously the microwave signal of identical or close frequencies to described trackside microwave antenna and described signal projector.
Preferably, described device also comprises:
Frequency spectrograph is used for signal and signal intensity that measurement trackside microwave antenna and signal projector are launched.
The application also provides a kind of control the transaction zone in ETC method, comprising:
Adjust direction of illumination, angle and the power of trackside microwave antenna, make its signal irradiation area coverage goal transaction regional;
Adjust direction of illumination, angle and the power of signal projector, make its signal irradiation area be positioned at the edge in target transaction zone, and signal intensity is better than the trackside microwave antenna in the signal intensity of target transaction edges of regions;
Wherein, described trackside microwave antenna is launched the signal of identical or close frequencies with signal projector.
Preferably, described target transaction zone is positioned at the ETC track, and the edge in described target transaction zone is that the both sides in ETC track and ETC track are away from an end of trackside microwave antenna.
Preferably, described signal projector has three, lays respectively at both sides and the top of described trackside microwave antenna.
Preferably, the signal of described signal projector and trackside microwave antenna emission is the microwave signal of the identical or close frequencies that sends simultaneously of same signal source.
Preferably, measure signal and the signal intensity of described trackside microwave antenna and signal projector emission with frequency spectrograph.
Compared with prior art, the application has the following advantages:
By set up signal projector around the trackside microwave antenna, the signal irradiation area coverage goal transaction zone of trackside microwave antenna, the signal irradiation area of signal projector is positioned at the periphery in ETC track, and signal intensity is better than the trackside microwave antenna in the signal intensity of ETC track periphery, thereby make outside the ETC track, and the ETC track is away from an end of trackside antenna, and electronic tag can't receive the signal of trackside microwave antenna, the transaction zone is limited in the ETC track scope of expectation.
In addition, the signal of introducing due to signal projector is identical with the signal source of trackside microwave antenna signal, has guaranteed that transmitter and antenna send signal simultaneously, has avoided signal to interlock and cause occurring the signal leak on time slot.
Description of drawings
Fig. 1 is the schematic diagram of controlling the device embodiment in transaction zone in a kind of ETC of the application;
Fig. 2 is the process flow diagram of controlling the embodiment of the method in transaction zone in a kind of ETC of the application.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can become apparent more, below in conjunction with the drawings and specific embodiments, the application is described in further detail.
In existing electronic charging system without parking, outside the main range of exposures of antenna, the signal in main range of exposures can occur being weaker than, the more intense electronic tag of receiving sensitivity may receive weak signal, thereby the transaction outside desired regions occurs.
One of core idea of the application is, will be by set up signal projector around the trackside microwave antenna, the signal irradiation area coverage goal transaction zone of trackside microwave antenna, it is the ETC track, the signal irradiation area of signal projector is positioned at the periphery in ETC track, and signal intensity is better than the trackside microwave antenna in the signal intensity of ETC track periphery, thereby make outside the ETC track, electronic tag can't receive the signal of trackside microwave antenna, transaction zone is limited in the ETC track scope of expectation.
With reference to figure 1, the schematic diagram that it shows the device embodiment 1 that controls the transaction zone in a kind of ETC of the application comprises:
Described signal projector 12 has three, lays respectively at both sides and the top of described trackside microwave antenna;
Described trackside microwave antenna 11 is launched the signal of identical or close frequencies with signal projector 12;
The regional S2 of signal irradiation area coverage goal transaction of described trackside microwave antenna 11;
The signal irradiation area of described signal projector 12 is positioned at the edge in target transaction zone, and signal intensity is better than described trackside microwave antenna in the signal intensity at the edge in described target transaction zone.
In a preferred embodiment of the present application, described target transaction zone is positioned at the ETC track.As shown in Figure 1, the signal irradiation area of trackside microwave antenna 11 is S2, has not only covered the B track, i.e. ETC track has also covered the subregion in A track and C track, namely has the trackside microwave antenna signal that is weaker than the ETC track on A track and B track.If signal projector 12 is not installed, the edge of the higher electronic tag of remolding sensitivity S2 on B, C track still can receive the signal of trackside microwave antenna.
Near the signal irradiation area of three signal projectors 12 installing trackside microwave antenna 11 is positioned at the edge in ETC track, as shown in Figure 1, the signal irradiation area of the signal projector of trackside microwave antenna both sides is positioned at the both sides (S1 and S3) in target transaction zone, and the signal irradiation area of the signal projector above the trackside microwave antenna is positioned at the end (S4) away from the trackside microwave antenna in target transaction zone.
In a preferred embodiment of the present application, can utilize frequency spectrograph to measure the signal of trackside microwave antenna 11 and signal projector 12, and signal intensity, by adjusting direction of illumination and the angle of trackside microwave antenna 11 and signal projector 12, can make the signal of signal projector 12 at the edge of the signal irradiation area S2 of trackside microwave antenna 11, be the edge in ETC track, be better than the signal of trackside microwave antenna 11.
Due to 12 emissions of trackside microwave antenna 11 and signal projector is identical or the signal of close frequencies, close frequency signal is strong and weak to be suppressed, make trackside microwave antenna 11 in the both sides in ETC track, and away from the signal of the end in the ETC track of trackside microwave antenna 11 by the signal shielding of signal projector 12, make the electronic tag outside the ETC track can't receive effective microwave signal.
For adapting to the needs of no power subtab, the signal of trackside microwave antenna and signal projector can be centered by 5.835G, respectively is offset up and down in the 100M scope signal of arbitrary frequency; The signal of close frequencies can be the signal of any two different frequencies in this scope.
As shown in Figure 1, when the vehicle that electronic tag is housed passes through from the signal irradiation area S4 of the signal projector of ETC track far-end, in the S4 zone signal suppressing of transmitter the signal of trackside microwave antenna 11, electronic tag can't normally receive the signal of antenna, can not return to any data; After electronic tag enters the antenna irradiation zone, can receive the signal that effectively searches trackside microwave antenna 11, begin transaction and deduct fees.When the vehicle that OBU is housed neighboring trace (A track or B track) when passing through from the side, in transmitter irradiation area corresponding to A track signal suppressing the ETC track shed than weak signal, electronic tag can't normally receive the signal of antenna, can not reply data equally, can not cause the interference to the ETC track.Therefore, the application's device can be avoided the mistake that regional exoelectron label and antenna communication cause fully.
In concrete realization, can send by controller the microwave signal of same frequency to trackside microwave antenna 11 and signal projector 12.Being about to the transmitted signal that controller sends to original antenna is incorporated in three transmitters simultaneously.The digital command signal source of the digital command signal of introducing due to transmitter and antenna is identical, can guarantee that transmitter and antenna send signal simultaneously, has avoided signal to interlock and cause occurring the signal leak on time slot.
In sum, the application provides the device of controlling the transaction zone in a kind of ETC, by set up signal projector around the trackside microwave antenna, the irradiation area coverage goal transaction zone of trackside microwave antenna, the irradiation area of signal projector is positioned at the periphery in ETC track, and signal intensity is better than the trackside microwave antenna in the signal intensity of ETC track periphery, thereby make outside the ETC track, and the ETC track is away from an end of trackside antenna, electronic tag can't receive the signal of trackside microwave antenna, transaction zone is limited in the ETC track scope of expectation.
In addition, the signal of introducing due to signal projector is identical with the signal source of trackside microwave antenna signal, has guaranteed that transmitter and antenna send signal simultaneously, has avoided signal to interlock and cause occurring the signal leak on time slot.
With reference to figure 2, the process flow diagram that it shows the embodiment of the method 1 of controlling the transaction zone in a kind of ETC of the application specifically can comprise the following steps:
Direction of illumination, angle and the power of step 201, adjustment trackside microwave antenna make its signal irradiation area coverage goal transaction regional;
Direction of illumination, angle and the power of step 202, adjustment signal projector, make its signal irradiation area be positioned at the edge in target transaction zone, and signal intensity is better than the trackside microwave antenna in the signal intensity of target transaction edges of regions, wherein, described trackside microwave antenna is launched the signal of identical or close frequencies with signal projector.
In concrete realization, described target transaction zone is positioned at the ETC track, and the edge in described target transaction zone is that the both sides in ETC track and ETC track are away from an end of trackside microwave antenna.
Method according to the present embodiment, at first the signal irradiation area of trackside microwave antenna is controlled at the target transaction zone, then the signal irradiation area of signal projector is controlled at the edge in target transaction zone, namely the both sides in ETC track and ETC track are away from an end of trackside microwave antenna.
Edge in the target transaction zone, because the signal frequency of signal projector and trackside microwave antenna is identical or close, and be better than the signal of trackside microwave antenna, close frequency signal is strong and weak to be suppressed, make the signal conductively-closed of target transaction edges of regions trackside microwave antenna, vehicle is when this zone, and electronic tag can't receive the signal of trackside microwave antenna, and the trading range of electronic tag has been limited in the target transaction zone.
In a preferred embodiment of the present application, described signal projector can have three, lays respectively at both sides and the top of described trackside microwave antenna.
In a preferred embodiment of the present application, the microwave signal of the identical or close frequencies that the signal of described signal projector and trackside microwave antenna emission can send simultaneously for same signal source.
In a preferred embodiment of the present application, can measure with frequency spectrograph signal and the signal intensity of described trackside microwave antenna and signal projector emission.
Due to described embodiment of the method substantially corresponding to aforementioned device embodiment shown in Figure 1, therefore not detailed part in the description of the present embodiment, can be referring to the related description in previous embodiment, just do not given unnecessary details at this.
Those skilled in the art should know, the embodiment described in instructions all belongs to preferred embodiment, and related action and module might not be that the application is necessary.
For embodiment of the method, for simple description, therefore it all is expressed as a series of combination of actions, but those skilled in the art should know, the application is not subjected to the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.
Need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make the process, method, article or the equipment that comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Control the device in transaction zone in above a kind of ETC that the application is provided, and, controlling the regional method of transaction in a kind of ETC is described in detail, used specific case herein the application's principle and embodiment are set forth, the explanation of above embodiment just is used for helping to understand the application's method and core concept thereof; Simultaneously, for one of ordinary skill in the art, the thought according to the application all will change in specific embodiments and applications, and in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. control the regional device of transaction in an ETC, it is characterized in that, comprising:
Trackside microwave antenna and signal projector;
Described signal projector has three, lays respectively at both sides and the top of described trackside microwave antenna;
Described trackside microwave antenna is launched the signal of identical or close frequencies with signal projector;
The signal irradiation area coverage goal transaction zone of described trackside microwave antenna;
The signal irradiation area of described signal projector is positioned at the edge in target transaction zone, and signal intensity is better than described trackside microwave antenna in the signal intensity at the edge in described target transaction zone.
2. device as claimed in claim 1, is characterized in that, described target transaction zone is positioned at the ETC track.
3. device as claimed in claim 1 or 2, is characterized in that, the edge that the signal irradiation area of described signal projector is positioned at the target transaction zone comprises:
The signal irradiation area of the signal projector of trackside microwave antenna both sides is positioned at the both sides in target transaction zone, and the signal irradiation area of the signal projector above the trackside microwave antenna is positioned at the end away from the trackside microwave antenna in target transaction zone.
4. device as claimed in claim 1, is characterized in that, also comprises:
Controller is for send simultaneously the microwave signal of identical or close frequencies to described trackside microwave antenna and described signal projector.
5. device as claimed in claim 1, is characterized in that, also comprises:
Frequency spectrograph is used for signal and signal intensity that measurement trackside microwave antenna and signal projector are launched.
6. control the regional method of transaction in an ETC, it is characterized in that, comprising:
Adjust direction of illumination, angle and the power of trackside microwave antenna, make its signal irradiation area coverage goal transaction regional;
Adjust direction of illumination, angle and the power of signal projector, make its signal irradiation area be positioned at the edge in target transaction zone, and signal intensity is better than the trackside microwave antenna in the signal intensity of target transaction edges of regions;
Wherein, described trackside microwave antenna is launched the signal of identical or close frequencies with signal projector.
7. method as claimed in claim 6, is characterized in that, described target transaction zone is positioned at the ETC track, and the edge in described target transaction zone is that the both sides in ETC track and ETC track are away from an end of trackside microwave antenna.
8. method as described in claim 6 or 7, is characterized in that, described signal projector has three, lays respectively at both sides and the top of described trackside microwave antenna.
9. method as claimed in claim 6, is characterized in that, the signal of described signal projector and trackside microwave antenna emission is the microwave signal of the identical or close frequencies that sends simultaneously of same signal source.
10. method as claimed in claim 6, is characterized in that, measures signal and the signal intensity of described trackside microwave antenna and signal projector emission with frequency spectrograph.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110412382.5A CN103164876B (en) | 2011-12-12 | 2011-12-12 | Device and method for controlling transaction area in ETC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110412382.5A CN103164876B (en) | 2011-12-12 | 2011-12-12 | Device and method for controlling transaction area in ETC |
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| CN103164876A true CN103164876A (en) | 2013-06-19 |
| CN103164876B CN103164876B (en) | 2015-07-08 |
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| CN201110412382.5A Active CN103164876B (en) | 2011-12-12 | 2011-12-12 | Device and method for controlling transaction area in ETC |
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Cited By (3)
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| CN108616316A (en) * | 2016-12-29 | 2018-10-02 | 艾尔珀因特株式会社 | Car-mounted device and its signal processing method |
| CN110047159A (en) * | 2019-04-22 | 2019-07-23 | 深圳成有科技有限公司 | Improve the method, device and equipment of free flow charge transaction success rate |
| CN111292532A (en) * | 2020-02-07 | 2020-06-16 | 北京易路行技术有限公司 | Device, communication system and method for detecting vehicle-mounted label on expressway |
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| CN110047159A (en) * | 2019-04-22 | 2019-07-23 | 深圳成有科技有限公司 | Improve the method, device and equipment of free flow charge transaction success rate |
| CN111292532A (en) * | 2020-02-07 | 2020-06-16 | 北京易路行技术有限公司 | Device, communication system and method for detecting vehicle-mounted label on expressway |
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| CN103164876B (en) | 2015-07-08 |
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Address after: 100193 2 / F, block B, qianfang building, 27 Zhongguancun Software Park, 8 Dongbeiwang West Road, Haidian District, Beijing Patentee after: CHINA TRANSINFO TECHNOLOGY Corp. Address before: 100191 Beijing Haidian District 39 Xueyuan Road 8 real estate building. Patentee before: CHINA TRANSINFO TECHNOLOGY Corp. |