CN103514750B - It is anti-with car interference method, device and application system based on DSRC - Google Patents
It is anti-with car interference method, device and application system based on DSRC Download PDFInfo
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Abstract
This application discloses a kind of anti-with car interference method, device and DSRC application systems based on DSRC.Method is comprised the following steps：Signal receives step：RSU is received includes an OBU, the microwave signal that multiple OBU of the 2nd OBU send；Positioning step：RSU obtains the location information of each OBU according to each microwave signal；Comparison step：By the location information of relatively more each OBU, RSU selects the OBU of priority treatment from the OBU.The application is applied to highway communication field, effective identification has been carried out to the front and back position of vehicle by vehicle positioning technology, so as to accurately select the OBU of priority treatment and carry out priority treatment to the vehicle with the OBU, the OBU on other vehicles is set not produce interference to the normal interaction process between the OBU of priority treatment and RSU, so as to efficiently solve vehicle with car interference problem, reduce the probability of error handle.
Description
Technical Field
The application relates to the field of Intelligent Transportation (ITS), in particular to a method, a device and an application System for preventing vehicle following interference based on Dedicated Short Range Communication (DSRC).
Background
DSRC application systems such as Electronic Toll Collection (ETC) systems generally adopt DSRC key equipment Road Side Units (RSU) and On-board Units (OBU) to charge, detect or monitor vehicles, and these systems sometimes have the problem of following interference of OBU signals in the operation process: that is, after a previous vehicle enters a preset transaction area, information interaction is started through the OBU and the RSU, another vehicle following the previous vehicle may also enter the transaction area, and information is transmitted to the RSU through the OBU at the same time, so that interference is generated in a normal interaction process between the OBU and the RSU on the previous vehicle, and a processing process of a DSRC application system is wrong or omitted.
In order to ensure the normal operation of a DSRC application system, the problem of preventing vehicle following interference needs to be solved urgently.
Disclosure of Invention
The application provides a DSRC-based vehicle following interference prevention method and device and a DSRC application system.
According to a first aspect of the application, the application protects a DSRC-based anti-following interference method, which comprises the following steps:
a signal receiving step: the RSU receives microwave signals transmitted by a plurality of OBUs including a first OBU and a second OBU;
a positioning step: the RSU obtains the positioning information of each OBU according to each microwave signal;
a comparison step: and comparing the positioning information of the OBUs, and selecting the OBU which is processed preferentially from the OBUs by the RSU.
In one embodiment, in the comparing step, the RSU selects an OBU to be processed first from the OBUs in a specific manner, that is, an OBU closest to the RSU is selected from the OBUs as the OBU to be processed first; the comparing step further comprises the transaction step of: and the RSU preferentially sends a charging instruction to the OBU which is preferentially processed.
In one embodiment, after the OBU with the priority processing is selected in the comparing step, the other OBUs are further sorted from near to far according to the distance between the other OBUs and the RSU; in the transaction step, the RSU also sends charging instructions to the other OBUs in sequence from near to far.
In one embodiment, the RSU outdoor unit has a position coordinate of 0 in the first direction, and in the positioning step, the positioning information of the first OBU includes a position coordinate y1 in the first direction, and the positioning information of the second OBU includes a position coordinate y2 in the first direction; in the comparing step, if y1| < | y2|, the first OBU is selected as the preferential processing OBU, and if y1| > | y2|, the second OBU is selected as the preferential processing OBU.
In one embodiment, the RSU outdoor unit has 0 position coordinates in both the first direction and the second direction, and in the positioning step, the positioning information of the first OBU includes y1 position coordinates in the first direction and x1 position coordinates in the second direction, and the positioning information of the second OBU includes y2 position coordinates in the first direction and x2 position coordinates in the second direction, wherein the first direction is perpendicular to the second direction; in the comparison step, ifSelecting the first OBU as the preferentially processed OBU, ifSelecting the second OBU as the preferentially processed OBU.
In one embodiment, the positioning step uses a phase difference positioning method.
According to a second aspect of the application, the application protects a DSRC-based anti-following interference device, which comprises an RSU, wherein the RSU comprises:
a signal receiving module: the microwave signal receiving device is used for receiving microwave signals transmitted by a plurality of OBUs including a first OBU and a second OBU;
a positioning module: the positioning device is used for acquiring positioning information of each OBU according to the microwave signal sent by each OBU;
a comparison module: and the OBUs are used for comparing the positioning information of the OBUs to select the OBU which is processed preferentially from the OBUs.
In one embodiment, the comparing module is configured to select an OBU closest to the RSU from the OBUs as a prioritized OBU; the RSU also comprises a transaction module which is used for sending a charging instruction to the OBU which is processed preferentially.
According to a third aspect of the present application, the present application protects a DSRC application system comprising the DSRC-based car following interference prevention device described above.
In one embodiment, the DSRC application system is a single-lane barrier ETC system, a multi-lane barrier ETC system, a single-lane free flow system or a multi-lane free flow system, and the signal receiving module is disposed on a corresponding lane of the single-lane barrier ETC system, the multi-lane barrier ETC system or the single-lane free flow system, or on at least one free flow section of the multi-lane free flow system.
In one embodiment, the DSRC system comprises at least one of a vehicle detection system, a vehicle speed measurement system, a vehicle type identification system, an image capture system.
The beneficial effect of this application is: the application is applied to the road traffic field, the OBU on the suitable vehicle is selected as the OBU of priority processing through vehicle positioning and position comparison, effective identification of the front and back positions of the vehicle is realized, then the RSU can firstly charge the OBU of priority processing or process the vehicle with the OBU in other forms, other OBUs or vehicles with other OBUs are not processed temporarily, the OBU on other vehicles can not generate interference on the normal interaction process between the OBU of priority processing and the RSU, and therefore the problem of vehicle following interference is effectively solved. In addition, the OBUs to be preferentially processed are selected according to the specific positions of the OBUs, for example, the OBUs which are closest to or farthest from the RSU or have a specific distance with the RSU are selected, so that the anti-interference performance of the system is effectively improved in the practical application process, the probability of error processing is reduced, and the normal operation of the DSRC application system is ensured.
Drawings
Fig. 1 is a flowchart of a method for preventing car following interference according to an embodiment of the present application;
FIG. 2 is a side view of a vehicle within the RSU signal coverage area according to one embodiment of the present application;
fig. 3 is a receiving antenna layout diagram of a positioning method according to an embodiment of the present application;
fig. 4 is a block diagram of a structure of a following interference prevention device according to an embodiment of the present application.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The present application will be described in further detail below with reference to specific embodiments and drawings.
In the embodiment of the application, the RSU determines the location information of the OBUs on the plurality of vehicles interacting with the RSU by using a location technology, thereby determining the location of each OBU, then selects a proper OBU as a priority OBU by comparing the location of each OBU, firstly charges the priority OBU or performs other types of processing on the vehicle with the OBU, and temporarily does not process other OBUs or vehicles with other OBUs
The first embodiment is as follows:
the car following interference prevention method of the embodiment is based on information interaction between the RSU and the OBU. Wherein the RSU includes an outdoor unit having a transceiving antenna for transmitting and receiving microwave signals to and from the OBU, and an indoor unit for controlling the RSU outdoor unit and processing information received and transmitted by the RSU outdoor unit, which is generally installed above or at a side of a road; the OBU also has an antenna for transmitting and receiving microwave signals to and from the RSU, which is typically mounted within the vehicle, for example, fixed to the front windshield of the vehicle. Referring to fig. 1 and fig. 2, the method of the present embodiment mainly includes the following steps:
s101: after both vehicles enter the RSU signal coverage area shown by the dotted line, the OBU1 mounted on the first vehicle and the OBU2 mounted on the second vehicle are awakened by the awakening signal periodically transmitted by the RSU, and both OBUs transmit a response signal to the RSU so as to establish a communication link with the RSU.
S102: taking the first vehicle as an example, the RSU sends a microwave signal to the OBU1, where the microwave signal carries a request data frame, and the specific content of the request data frame is determined according to the need, and is generally used to request the OBU1 to return certain information to the RSU, for example, the request data frame of this embodiment is used to request vehicle information (including one or more of information such as license plate number, vehicle model, and vehicle color).
S103: the OBU1 analyzes the microwave signal of the RSU after receiving the microwave signal, then obtains the vehicle information requested by the RSU through internal calculation and encapsulates the vehicle information into a response data frame, and then returns a microwave signal B to the RSU, wherein the microwave signal B comprises the response data frame, the ID of the OBU1 and other information.
S104: and a signal receiving step, in which the RSU receives the microwave signal B returned to the RSU by the OBU 1.
S105: a positioning step: the RSU analyzes the microwave signal B to obtain a response data frame, and obtains the positioning information of the OBU1, namely the positioning information of the first vehicle by using the microwave signal B. In this embodiment, the RSU performs two-directional positioning on the OBU1 to obtain positioning information including two-dimensional coordinates, that is, the positioning information of the OBU1 includes a position coordinate y1 of the OBU1 in a first direction and a position coordinate x1 of a second direction, where the second direction and the first direction are both in the plane of the road surface and perpendicular to each other, the first direction is parallel to the road extending direction, and the second direction is perpendicular to the road extending direction. The method for obtaining the location information of the OBU1 includes various methods, such as a phase difference location method for locating the OBU1 by using the phase difference value corresponding to the same microwave signal received by different receiving antennas in the RSU, and a signal strength location method for locating the OBU1 by using the signal strength corresponding to the microwave signal received by the receiving antennas in the RSU.
For example, a phase difference positioning method for microwave signals includes:
referring to fig. 3, an antenna group formed by the receiving antennas 1, 2 and 3 arranged on the same straight line receives microwave signals transmitted by the same OBU, and a distance d between the receiving antennas 1 and 212<λ, distance d between receiving antenna 1 and receiving antenna 313>And N lambda, the included angle between the incoming wave direction of the microwave signal sent by the OBU and the normal line of the antenna array is theta, namely the direction angle of the microwave signal. When the microwave signals respectively reach the three receiving antennas, because the microwave signals are far away from the receiving antennas and belong to the far field area of the receiving antennas, the microwave signals equivalently arrive at the receiving antennas in parallel, and the phase lag of the microwave signals received by the receiving antenna 2 is larger than that of the microwave signals received by the receiving antenna 1That is, the phase difference of the receiving antenna 2 with respect to the receiving antenna 1 isThe phase of the microwave signal received by the receiving antenna 3 lags behind the phase of the microwave signal received by the receiving antenna 1That is, the phase difference of the receiving antenna 3 with respect to the receiving antenna 1 is
Then(formula one)
Then(formula two)
Wherein,for obtaining phase difference by phase comparisonThe actual degree of time due toThis value is therefore unique.
To determine the value of N, the following formula may be utilized:
(formula three)
In the above formula, d12And d13In the known manner, it is known that,the actual reading can be obtained by phase comparisonCan be calculated according to the formula III.
Within an acceptable error range, if it is assumed:
then the following equation may be derived in conjunction with equation three to determine N:
(formula four)
In view ofThe error caused by each item of processing in the signal receiving path is calculated by the formula IIIHas an error value ofOf error value ofThus calculated by formula three and formula twoJust nearQuasi-equal, can not be completely equal, as long as calculatedIs within an acceptable range, the following equation can be obtained by combining equation two and equation four to determine θ:
(formula five)
In the derivation process, as can be seen from the formula two,is different from the assumed value byThe larger the value of N is, the larger the value of N isSmaller error value of (d), while too large value of N13The total length of the positioning antenna is increased and the layout is difficult, so that N is more than or equal to 3 and less than or equal to 10, certain positioning precision can be ensured, and the antenna layout is convenient. And finally, calculating the positioning information of the OBU, namely specific coordinates of the OBU in a coverage area in front of the vertical projection point of the RSU antenna according to the value of the theta and the installation height and angle of each receiving antenna.
The OBU can be positioned in one dimension according to the above mode, and if a group of antenna groups perpendicular to the above antenna groups is added, the OBU can be positioned in two dimensions by adopting the same processing mode.
Similar to steps S102 to S105, the RSU also obtains the location information of the OBU2, i.e., the location information of the second vehicle, including the position coordinate y2 of the OBU2 in the first direction and the position coordinate x2 of the second direction, from the microwave signal a returned by the OBU2 to the RSU.
S106: comparing step, RSU compares positioning information of OBU1 and OBU2, rootAnd selecting the priority-processing OBU from the two OBUs according to different selection strategies, for example, selecting the OBU closest to the RSU from the two OBUs as the priority-processing OBU, or selecting the OBU farthest from the RSU or having a specific distance from the two OBUs as the priority-processing OBU. There are various comparison methods according to different coordinate systems, for example, if the installation position of the RSU outdoor unit is set at the coordinate center of the coordinate system according to fig. 2, that is, the position coordinates of the RSU outdoor unit in the first direction and the second direction are both 0, in the comparison process of this step, ifIndicating that the OBU2 is relatively close to the RSU outdoor unit, with the first vehicle following behind or to the side of the second vehicle, the OBU2 is selected as the priority-handling OBU, and conversely, ifIndicating that the OBU1 is relatively close to the RSU outdoor unit and the second vehicle is behind or to the side of the first vehicle, the OBU1 is selected as the prioritized OBU.
S107: the RSU performs corresponding priority processing on the priority-processed OBU or the vehicle with the OBU, for example, when the processing mode is transaction, the RSU preferentially sends a charging instruction to the priority-processed OBU to prepare for charging the priority-processed OBU, of course, according to specific needs, the RSU may also send other processing instructions according to a preset scheme, for example, the processing instruction may be a detection instruction, a monitoring instruction, a photographing instruction, and the like, and is respectively used for performing other types of processing such as detection, monitoring, photographing, and the like on the first vehicle, and at this time, the other OBU or the vehicle with the other OBU is not processed temporarily.
In some embodiments, the RSU performs information interaction with a plurality of OBUs on the vehicle in the above steps, receives microwave signals sent by the OBUs, and then obtains positioning information of the OBUs according to the microwave signals, in the comparing step of step S106, the RSU further compares the positioning information of each OBU to select the OBU closest to the RSU as the prioritized OBU, and may also sort the other OBUs from near to far according to the distance between the RSU and the other OBUs other than the prioritized OBU, in the next step of step S107, the RSU first issues a charging command to the priority-processing OBU, and then issues charging commands to the other OBUs in order from near to far, or after the processing step RSU issues other processing instructions according to a preset scheme to first perform other types of processing on the vehicle with the priority-processing OBU, and other processing instructions are sent out to process the vehicles with other OBUs in a sequence from near to far.
In practical applications, there may be a plurality of information exchanges between the RSU and each OBU, and correspondingly there may be a plurality of microwave signals transmitted by the OBUs to the RSU, where these signals all include the ID number of the OBU.
Example two:
the present embodiment is different from the previous embodiment in that the RSU performs positioning in only one direction, and in particular, positioning of the OBU in a first direction parallel to the road extending direction is performed to obtain positioning information including one-dimensional coordinates, in the present embodiment, in the positioning step of the OBU1 and the OBU2, the obtained positioning information of the OBU1 includes a position coordinate y1 of the OBU1 in the first direction, the positioning information of the OBU2 includes a position coordinate y2 of the first direction, in the comparing step, if | y1| > | y2| indicates that the OBU2 is relatively close to the RSU outdoor unit, and the first vehicle is following behind or on the side of a second vehicle, the OBU2 is selected as the preferential OBU, conversely, if | y1| < | y2| indicates that the OBU1 is relatively close to the RSU outdoor unit, and the second vehicle is following behind or on the side of the first vehicle, the OBU1 is selected as the priority-handling OBU.
Example three:
as shown in fig. 4, the DSRC-based following interference prevention device for implementing the first embodiment or the second embodiment of the present invention includes an RSU, and the RSU mainly includes a signal receiving module 10, a positioning module 20, a comparing module 30, and a processing module 40.
The signal receiving module 10 is disposed in an RSU outdoor unit, and includes an antenna for receiving microwave signals transmitted by a plurality of OBUs including a first OBU1 and a second OBU 2.
The positioning module 20 is configured to obtain positioning information of each OBU according to the microwave signal sent by each OBU. Depending on the positioning method, the positioning module 20 may perform positioning in one direction on the OBU to obtain positioning information including one-dimensional coordinates, or perform positioning in two directions to obtain positioning information including two-dimensional coordinates.
The comparing module 30 is configured to select a first-processed OBU from the OBUs by comparing the location information of the OBUs, for example, in one embodiment, to select the OBU closest to the RSU from the OBUs as the first-processed OBU. Depending on the comparison method, the comparison module 30 may perform a position comparison in one direction or a position comparison in two directions for the OBU. In some embodiments, when the RSU interacts with multiple OBUs, the comparing module 30 may also order the other OBUs from near to far according to the distance between the other OBUs except the one that is preferentially processed and the RSU.
The processing module 40 is configured to issue a processing instruction to the OBU that is prioritized, or prioritize the vehicle with the OBU, and the processing module 40 may be various processing modules such as a transaction module, a detection module, or a monitoring module, for example, a transaction module, and is configured to issue a charging instruction to the OBU that is prioritized. In some embodiments, when the RSU performs information interaction with multiple OBUs, the processing module 40 may further send a charging instruction to the priority OBU first and then send charging instructions to other OBUs in sequence from near to far according to the sorting result of the comparing module 30, or send other processing instructions according to a preset scheme and then send other processing instructions to process the vehicle with other OBUs in sequence from near to far after sending other processing instructions to the vehicle with the priority OBU first.
The vehicle following interference prevention method in the embodiment can be widely applied to various DSRC application systems, such as a single-lane barrier ETC system, a multi-lane barrier ETC system, a single-lane free flow system, a multi-lane free flow system, and various vehicle monitoring systems for real-time monitoring or violation inspection of vehicles, such as a vehicle speed measuring system, a vehicle type recognition system, an image recognition system, and an image snapshot system. The signal receiving module is arranged on a corresponding lane of the single-lane rail machine ETC system, the multi-lane rail machine ETC system or the single-lane free flow system, or on at least one free flow section in the multi-lane free flow system, non-stop toll collection can be accurately realized for vehicles closest to the RSU in a transaction area, interference of an OBU on another vehicle behind the vehicle on a normal interaction process between the OBU and the RSU on the previous vehicle is avoided, toll collection errors, detection errors and other phenomena are avoided, and normal toll collection is ensured.
The second embodiment can be used for a single-lane DSRC application system, the structure and the information processing party of the RSU are relatively simple, the cost is low, and the first embodiment can be used for the single-lane or multi-lane DSRC application system, so that the recognition result is more accurate and reliable.
The DSRC-based adjacent channel interference releasing method is convenient to operate, high in processing speed and high in accuracy, and the area and the number of a transaction area are not changed, so that the charging of an RSU to vehicles or normal processing processes of other forms are not influenced, the speed of the vehicle is not reduced, the system cost is not greatly increased, and the DSRC-based adjacent channel interference releasing method can be widely applied to various road traffic fields such as highway charging and parking lot charging.
Those skilled in the art will appreciate that all or part of the steps of the various methods in the above embodiments may be implemented by instructions associated with hardware via a program, which may be stored in a computer-readable storage medium, which may include: read-only memory, random access memory, magnetic or optical disk, and the like.
The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended to limit the present application to these embodiments. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the spirit of the disclosure.
Claims (9)
1. A method for preventing car following interference based on special short-range communication is characterized by comprising the following steps:
a signal receiving step: the method comprises the steps that a road side unit receives microwave signals sent by a plurality of vehicle-mounted units including a first vehicle-mounted unit and a second vehicle-mounted unit;
a positioning step: the road side unit obtains positioning information of each vehicle-mounted unit by adopting a phase difference positioning method according to the microwave signals sent by each vehicle-mounted unit;
a comparison step: the road side unit selects the vehicle-mounted unit which is processed preferentially from the vehicle-mounted units by comparing the positioning information of the vehicle-mounted units;
the phase difference positioning method is used for positioning the vehicle-mounted unit by utilizing corresponding phase difference values when different receiving antennas in the road side unit receive the same microwave signal; the method specifically comprises the following steps:
an antenna group is formed by a receiving antenna 1, a receiving antenna 2 and a receiving antenna 3 which are arranged on the same straight line to receive microwave signals sent by the same vehicle-mounted unit; the distance between the receiving antenna 1 and the receiving antenna 2 is d12The distance between the receiving antenna 1 and the receiving antenna 3 is d13(ii) a The microwave signal received by the receiving antenna 2 is delayed in phase from the microwave signal received by the receiving antenna 1The phase of the microwave signal received by the receiving antenna 3 lags behind the phase of the microwave signal received by the receiving antenna 1
According to d12、d13、Andcalculating an included angle theta between an incoming wave direction of a microwave signal sent by the vehicle-mounted unit and a normal line of the antenna array;
and calculating the positioning information of the vehicle-mounted unit according to the value of theta and the mounting height and angle of each receiving antenna.
2. The method according to claim 1, wherein in the comparing step, the roadside unit selects the on-board unit to be prioritized from the on-board units in such a manner that the on-board unit closest to the roadside unit is selected from the on-board units as the on-board unit to be prioritized; the comparing step further comprises the transaction step of: and the road side unit sends a charging instruction to the vehicle-mounted unit which is processed preferentially.
3. The method of claim 2, wherein after the prioritized on-board units are selected in the comparing step, the other on-board units are further ranked from near to far according to distances between the other on-board units and the roadside units; in the transaction step, the road side unit also sends charging instructions to other vehicle-mounted units in sequence from near to far.
4. The method of claim 2, wherein the roadside unit includes an outdoor unit having a position coordinate of 0 in the first direction, and the positioning information of the first vehicle-mounted unit includes a position coordinate y1 in the first direction and the positioning information of the second vehicle-mounted unit includes a position coordinate y2 in the first direction; in the comparing, the first onboard unit is selected as the prioritized onboard unit if y1| <y 2|, and the second onboard unit is selected as the prioritized onboard unit if y1| > | y2 |.
5. The method of claim 2, wherein the roadside unit includes an outdoor unit having position coordinates of 0 in both a first direction and a second direction, and wherein the positioning information of the first onboard unit includes position coordinates y1 of the first direction and x1 of the second direction, and the positioning information of the second onboard unit includes position coordinates y2 of the first direction and x2 of the second direction, wherein the first direction is perpendicular to the second direction according to a formulaDetermining an included angle theta between the incoming wave direction of a microwave signal sent by the vehicle-mounted unit and the normal line of the antenna array, wherein d12＜λ，d13＞Nλ，3≤N≤10，In the comparison step, ifSelecting the first on-board unit as the prioritized on-board unit, ifThe second on-board unit is selected as the prioritized on-board unit.
6. The utility model provides a prevent following car interference device based on special short range communication which characterized in that, includes the road side unit, the road side unit includes:
a signal receiving module: the microwave signal receiving device is used for receiving microwave signals sent by a plurality of vehicle-mounted units including a first vehicle-mounted unit and a second vehicle-mounted unit;
a positioning module: the positioning device is used for acquiring positioning information of each vehicle-mounted unit by adopting a phase difference positioning method according to each microwave signal; the phase difference positioning method is used for positioning the vehicle-mounted unit by utilizing corresponding phase difference values when different receiving antennas in the road side unit receive the same microwave signal; the method specifically comprises the following steps:
an antenna group is formed by a receiving antenna 1, a receiving antenna 2 and a receiving antenna 3 which are arranged on the same straight line to receive microwave signals sent by the same vehicle-mounted unit; the distance between the receiving antenna 1 and the receiving antenna 2 is d12The distance between the receiving antenna 1 and the receiving antenna 3 is d13(ii) a The microwave signal received by the receiving antenna 2 is delayed in phase from the microwave signal received by the receiving antenna 1The phase of the microwave signal received by the receiving antenna 3 lags behind the phase of the microwave signal received by the receiving antenna 1
According to d12、d13、Andcalculating an included angle theta between an incoming wave direction of a microwave signal sent by the vehicle-mounted unit and a normal line of the antenna array;
according to the value of theta, the positioning information of the vehicle-mounted unit is calculated by combining the installation height and the angle of each receiving antenna;
a comparison module: and the vehicle-mounted unit is used for selecting the vehicle-mounted unit which is processed preferentially from the vehicle-mounted units by comparing the positioning information of the vehicle-mounted units.
7. The apparatus of claim 6, wherein the comparison module is configured to select, from the on-board units, an on-board unit closest to the roadside unit as the on-board unit to be prioritized; the road side unit also comprises a transaction module which is used for preferentially sending a charging instruction to the vehicle-mounted unit which is processed preferentially.
8. An application system of dedicated short-range communication, comprising the apparatus for preventing car-following interference based on dedicated short-range communication according to claim 6 or 7.
9. The system of claim 8, wherein the dedicated short-range communication application system is a single-lane electronic toll collection system with balustrades, a multi-lane electronic toll collection system with balustrades, a single-lane free-flow system or a multi-lane free-flow system, and the signal receiving module is disposed on a corresponding lane of the single-lane electronic toll collection system with balustrades, the multi-lane electronic toll collection system with balustrades or the single-lane free-flow system, or on at least one free-flow section of the multi-lane free-flow system.
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| CN104574544B (en) * | 2014-12-31 | 2017-04-26 | 深圳市金溢科技股份有限公司 | Method for communicating with OBU and RSU |
| CN105118098A (en) * | 2015-06-26 | 2015-12-02 | 深圳市金溢科技股份有限公司 | Method and system for preventing car following or adjacent lane interference, vehicle-mounted unit and road side unit |
| CN105184878B (en) * | 2015-09-30 | 2018-03-13 | 深圳市金溢科技股份有限公司 | Exclude the method for commerce of monkey chatter, roadside unit and multilane system in the same direction |
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| CN102436684B (en) * | 2011-09-20 | 2013-12-11 | 广州新软计算机技术有限公司 | Method and system for preventing a plurality of OBUs (On-Board Units) from interfering with ETC (electronic toll collection) transaction |
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