CN204463235U - Based on the vehicle-mounted path recognition device of frequency hopping - Google Patents
Based on the vehicle-mounted path recognition device of frequency hopping Download PDFInfo
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- CN204463235U CN204463235U CN201420859992.9U CN201420859992U CN204463235U CN 204463235 U CN204463235 U CN 204463235U CN 201420859992 U CN201420859992 U CN 201420859992U CN 204463235 U CN204463235 U CN 204463235U
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Abstract
The utility model discloses a kind of vehicle-mounted path recognition device based on frequency hopping.This vehicle-mounted path recognition device comprises microprocessor, memory module, 13.56MHz communication module, IC-card module, 13.56MHz responds to trigger module and frequency hopping communications module, frequency hopping communications module is connected with microprocessor, frequency hopping communications module can be configured to carry out radio signal transmission by the first frequency range and tabletop reading, writing device and by the second UHF band reception from trackside antenna radio-frequency signal, described first frequency range is different from described second frequency range, thus the radio communication reduced between vehicle-mounted path recognition device and trackside antenna is to the interference of the radio communication between vehicle-mounted path recognition device and tabletop reading, writing device, improve reliability and the efficiency of its radio communication.
Description
Technical field
The utility model relates to field of radio frequency identification, particularly, relates to a kind of vehicle-mounted path recognition device based on frequency hopping.
Background technology
Transport information statistical technique is the important topic in current intelligent traffic ITS field, is to realize vehicle to travel and the intelligentized important means of road management, is also the foundation in good time providing real-time road condition information to the public.Transport information statistical technique is because of it can provide the transport information in certain section moment, vehicle speed information, when certain vehicle passes through certain section information, so can provide support for vehicle traveling and road management intellectuality, informationization, road improvement traffic environment and saving transportation and energy aspect are had great importance.
On the other hand, for the freeway net of networked fee collection, often have many driving paths between 2, this situation causes a difficult problem in expressway tol lcollection operation, i.e. " path ambiguity problem ".Under networked fee collection environment, under the road network environment of the especially diversification of investment subjects, solve route or travel by vehicle " polysemy " problem to specification pass through fee distribution mode, improve and split transparency and fairness, realize more reasonably distribution of interests between owner, improve owner enthusiasm, there is earth shaking meaning.
Based on the transport information statistics of RFID (i.e. radio-frequency (RF) identification) technology and ambiguity path identifying system in China Zhejiang, Sichuan and Guangdong successful Application, but due to the intensive complexity of some province freeway net, RSU (Road Side Unit, also referred to as trackside antenna or roadside unit) installation site and charge station between distance be less than 1 km, the ODU (also referred to as tabletop reading, writing device) be arranged in charge station is in trackside antenna effective coverage range.OBU of the prior art (On Board Unit, be called vehicle electronics unit herein, also vehicle carried electronic label or electronic tag etc. can be called as) usually communicated by 433MHz radiofrequency signal with between RSU, also there is between OBU and ODU the communications band of 433MHz simultaneously, thus cause the signal transmission between OBU and RSU and the signal transmission between OBU and ODU to disturb, affect communication reliability, such as, cause OBU and ODU many communication handshake etc. in practice, extend exchange hour, decrease vehicle pass-through rate, the setting of OBU mode of operation also can be affected time serious, such as fail to wake OBU up at highway-entrance place, when driver being carried be in the OBU of dormant state by RSU, OBU cannot received path message, thus ambiguity path identification can not be carried out and cannot transport information be obtained.
Utility model content
The purpose of this utility model is to provide one can carry out the vehicle-mounted path recognition device of radio communication by interference-free respectively with roadside unit (RSU) and tabletop reading, writing device.
To achieve these goals, the utility model provides a kind of vehicle-mounted path recognition device based on frequency hopping, this vehicle-mounted path recognition device comprises microprocessor, memory module, 13.56MHz communication module, IC-card module, 13.56MHz induction trigger module, wherein, vehicle-mounted path recognition device also comprises frequency hopping communications module, frequency hopping communications module is connected with microprocessor, frequency hopping communications module is configured to carry out radio signal transmission by the first frequency range and tabletop reading, writing device and by the radiofrequency signal of the second UHF band reception from trackside antenna, described first frequency range is different from described second frequency range.
Preferably, when microprocessor judges vehicle-mounted path recognition device needs to believe via frequency hopping communications module and tabletop reading, writing device, microprocessor exports to frequency hopping communications module and makes frequency hopping communications module according to the instruction of described first band communication; When microprocessor judges vehicle-mounted path recognition device needs to receive the radiofrequency signal from trackside antenna, microprocessor exports to frequency hopping communications module and makes frequency hopping communications module carry out the instruction received according to described second frequency range.
Preferably, frequency hopping communications module is configured to by the 3rd frequency range to trackside antenna transmission radiofrequency signal, and described 3rd frequency range is different from described first frequency range and described second frequency range.
Preferably, when microprocessor judges vehicle-mounted path recognition device needs to trackside antenna transmission radiofrequency signal, microprocessor exports to frequency hopping communications module and makes frequency hopping communications module carry out the instruction of launching according to described 3rd frequency range.
Preferably, any one in described first frequency range, described second frequency range and described 3rd frequency range is all between 430MHz ~ 5.8GHz, and the interval between different described frequency range is more than or equal to 3MHz.
Preferably, vehicle-mounted path recognition device is configured to receive highway-entrance information via 13.56MHz communication module from tabletop reading, writing device at highway-entrance place, and the highway-entrance information received before highway exit place to send to tabletop reading, writing device via 13.56MHz communication module.
Preferably, vehicle-mounted path recognition device is configured to be received for vehicle-mounted path recognition device being placed in the information of sleeping/waking state, removing the information of the old routing information of vehicle-mounted path recognition device from tabletop reading, writing device by described first frequency range via frequency hopping communications module.
Preferably, vehicle-mounted path recognition device be configured to via frequency hopping communications module by described first frequency range to tabletop reading, writing device send below one or more: be stored in the routing information in the recognition device of vehicle-mounted path, represent vehicle-mounted path recognition device be in sleep or the information of wake-up states, vehicle-mounted path recognition device dump energy information.
Preferably, vehicle-mounted path recognition device to be configured to via frequency hopping communications module by described second frequency range from trackside antenna receive paths information.
Preferably, vehicle-mounted path recognition device is configured to the identity information being sent this vehicle-mounted path recognition device via frequency hopping communications module by described 3rd frequency range to trackside antenna.
Preferably, the utility model provides a kind of vehicle electronics unit, comprises the above-mentioned vehicle-mounted path recognition device based on frequency hopping.Such as, can be adopted this based on the vehicle-mounted path recognition device of frequency hopping as vehicle electronics unit.
By technique scheme, different frequencies can be used to communicate with RSU with ODU respectively according to vehicle-mounted path of the present utility model recognition device, to avoid homogenous frequency signal to disturb, improve reliability and the efficiency of radio communication.Further, this vehicle-mounted path recognition device by the duplex communication between two frequency supports and RSU, thus makes RSU from this vehicle-mounted path recognition device acquisition approach information etc., can be convenient to related system and carry out transport information statistics.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the vehicle-mounted path recognition device according to the utility model preferred implementation.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
Fig. 1 is the structural representation of the vehicle-mounted path recognition device 1 according to the utility model preferred implementation.As shown in the figure, vehicle-mounted path recognition device 1 can comprise microprocessor 11, memory module 12,13.56MHz communication module 13, IC-card module 14,13.56MHz induction trigger module 15 and frequency hopping communications module 16.
Microprocessor 11 can control other module and the transaction flows etc. in vehicle-mounted path recognition device 1.Memory module 12 is connected with microprocessor 11, can be used for store path information etc.IC-card module 14 is connected with 13.56MHz communication module 13.At highway-entrance place, access information can be write IC-card module 14 via 13.56MHz communication module 13 by ODU (tabletop reading, writing device) 2, and at highway exit place, the access information of write before ODU 2 can read from IC-card module 14 via 13.56MHz communication module 13.Preferably, IC-card module 14 can support contact and/or contactless IC-card read-write operation.
13.56MHz responds to trigger module 15 and is connected with microprocessor 11 with frequency hopping communications module 16.13.56MHz responds to trigger module 15 can sense that the frequency that 13.56MHz communication module 13 receives is the radiofrequency signal of 13.56MHz, and send trigger pip to microprocessor 11, trigger frequency hopping communications module 16 frequency hopping to the first frequency range via microprocessor 11, thus set up the link that communication frequency is the first frequency range between vehicle-mounted path recognition device 1 and ODU2.Such as, when microprocessor 11 judges that vehicle-mounted path recognition device 1 needs to communicate with ODU 2 via frequency hopping communications module 16, microprocessor 11 exports to frequency hopping communications module 16 and makes frequency hopping communications module 16 according to the instruction of described first band communication, so that the communication frequency between vehicle-mounted path recognition device 1 and ODU 2 is set to the first frequency range.By the link that this communication frequency is the first frequency range, the information vehicle-mounted path recognition device 1 being set to sleeping/waking state, the old routing information removed in vehicle-mounted path recognition device 1 can be sent according to different scene ODU 2, and/or read the routing information, the status information (awake state/dormant state) of vehicle-mounted path recognition device 1, the dump energy information etc. of vehicle-mounted path recognition device 1 that store in vehicle-mounted path recognition device 1.
When DTD when between ODU 2 and vehicle-mounted path recognition device 1 in the first band link and vehicle-mounted path recognition device 1 are placed in awake state, frequency hopping communications module 16 is set to continue in the second frequency range to monitor the radiofrequency signal that RSU 3 launches.Such as, when microprocessor 11 judges that vehicle-mounted path recognition device 1 needs to receive the radiofrequency signal from RSU 3, microprocessor 11 exports to frequency hopping communications module 16 and makes frequency hopping communications module 16 carry out the instruction received according to described second frequency range, thus frequency hopping communications module 16 is operated in the second frequency range to receive the signal from RSU 3.There is between the first frequency range and the second frequency range the interval of at least 3MHz.When the vehicle-mounted path recognition device 1 being in awake state is positioned at the coverage of a certain RSU 3, it via frequency hopping communications module 16 by the radiofrequency signal of the second UHF band reception from this RSU 3, can comprise the signal representing routing information in this radiofrequency signal.Such as, each RSU 3 can have association number, and this association number is sent to vehicle-mounted path recognition device 1 by the second frequency range by RSU 3, and the numbering of RSU 3 on the way can all be stored in its memory module 12.
Preferably, according to the utility model, its identity information to be also sent to RSU 3 on the way by the 3rd frequency range by vehicle-mounted path recognition device 1.Such as, when microprocessor 11 judges that vehicle-mounted path recognition device 1 needs to trackside antenna 3 emitting radio frequency signal, microprocessor 11 exports to frequency hopping communications module 16 and makes frequency hopping communications module 16 carry out the instruction of launching according to described 3rd frequency range, thus frequency hopping communications module 16 is operated in the 3rd frequency range to transmit to RSU 3.3rd frequency range is different from above-mentioned first and second frequency ranges, and and has the interval of at least 3MHz between the first frequency range and the second frequency range.Relevant traffic department according to the vehicle-mounted path recognition device 1 stored in RSU 3, can carry out transport information statistics.
Preferably, first frequency range, the second frequency range and the 3rd frequency range can between 430MHz ~ 5.8GHz, such as, its can be selected from but below being not limited at least one: 430MHz, 433MHz, 450MHz, 455MHz, 460MHz, 912MHz, 2.4GHz and 5.8GHz.
Be illustrated according to the application scenarios of vehicle-mounted path of the present utility model recognition device 1 below.When vehicle-mounted path recognition device arrives highway-entrance, access information is write the IC-card module of vehicle-mounted path recognition device by the ODU in highway-entrance charge station by 13.65MHz radiofrequency signal, trigger vehicle-mounted path recognition device simultaneously, make between vehicle-mounted path recognition device and ODU, to set up the first band communication link.ODU removes the old routing information in the memory module of vehicle-mounted path recognition device by this first band communication link, and sends the information waking vehicle-mounted path recognition device up.Vehicle-mounted path recognition device terminates communication with ODU on the first band communication link and after vehicle-mounted path recognition device is in wake-up states, and vehicle-mounted path recognition device continues to monitor by the second frequency range the broadcast message that RSU on the way sends via frequency hopping communications module.When vehicle-mounted path recognition device is in the coverage of RSU, vehicle-mounted path recognition device passes through the second UHF band reception routing information via frequency hopping communications module, and routing information can be preserved in a storage module.Meanwhile, vehicle-mounted path recognition device also sends identity information etc. by the 3rd frequency range to RSU.When vehicle-mounted path recognition device arrives highway exit, the access information preserved in IC-card module is read by the ODU in exit by 13.56MHz channel, and vehicle-mounted path recognition device can be triggered by 13.56MHz radiofrequency signal again, make frequency hopping communications module frequency hopping return first frequency channel to communicate with ODU, ODU reads the routing information preserved in the recognition device of vehicle-mounted path by first frequency channel, and vehicle-mounted path recognition device is set to dormant state, no longer monitor the broadcast singal that RSU sends.In addition, set up first frequency communication channel between vehicle-mounted path recognition device and ODU during, current state (/ dormancy of wakeing up), dump energy information etc. also can be sent to ODU by vehicle-mounted path recognition device.
Can find out, different frequency ranges is adopted to communicate with RSU with ODU according to vehicle-mounted path of the present utility model recognition device, even if make when RSU and ODU distance very near, also can and these two unit between in non-interfering situation, carry out radio communication respectively.Further, different frequency can be used support according to vehicle-mounted path of the present utility model recognition device and duplex communication between RSU, make RSU can gather abundant road travel data exactly, to carry out transport information statistics etc. with relevant departments.
Preferably, vehicle-mounted path recognition device disclosed in the utility model as a part for vehicle electronics unit (i.e. On Board Unit, also can be called as OBU, vehicle carried electronic label, electronic tag etc.) or directly can use as OBU.
In addition, although not shown, it will be appreciated by those skilled in the art that and also can comprise parts such as battery (such as button cell) as power supply according to of the present utility model year Path Recognition device.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. vehicle-mounted path recognition device (1) based on frequency hopping, this vehicle-mounted path recognition device (1) comprises microprocessor (11), memory module (12), 13.56MHz communication module (13), IC-card module (14), 13.56MHz responds to trigger module (15), it is characterized in that, vehicle-mounted path recognition device (1) also comprises frequency hopping communications module (16), frequency hopping communications module (16) is connected with microprocessor (11), frequency hopping communications module (16) is configured to carry out radio signal transmission by the first frequency range and tabletop reading, writing device (2) and by the radiofrequency signal of the second UHF band reception from trackside antenna (3), described first frequency range is different from described second frequency range.
2. vehicle-mounted path recognition device (1) based on frequency hopping according to claim 1, it is characterized in that, vehicle-mounted path recognition device (1) to be configured to via frequency hopping communications module (16) by described second frequency range from trackside antenna (3) received path message.
3. vehicle-mounted path recognition device (1) based on frequency hopping according to claim 1, it is characterized in that, frequency hopping communications module (16) is configured to by the 3rd frequency range to trackside antenna (3) emitting radio frequency signal, and described 3rd frequency range is different from described first frequency range and described second frequency range.
4. vehicle-mounted path recognition device (1) based on frequency hopping according to claim 3, it is characterized in that, vehicle-mounted path recognition device (1) is configured to the identity information being sent vehicle-mounted path recognition device (1) via frequency hopping communications module (16) by described 3rd frequency range to trackside antenna (3).
5. according to vehicle-mounted path recognition device (1) based on frequency hopping in claim 1-4 described in any one, it is characterized in that, frequency hopping communications module (16) is for any described frequency range that communicates all between 430MHz ~ 5.8GHz, and the interval between different described frequency range is more than or equal to 3MHz.
6. a vehicle electronics unit, is characterized in that, described vehicle electronics unit comprises the vehicle-mounted path recognition device based on frequency hopping according to any one of claim 1-5.
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| CN201420859992.9U CN204463235U (en) | 2014-12-30 | 2014-12-30 | Based on the vehicle-mounted path recognition device of frequency hopping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711197A (en) * | 2018-05-24 | 2018-10-26 | 北京握奇智能科技有限公司 | The method and apparatus that a kind of power to board units is adaptively adjusted |
| CN111292431A (en) * | 2018-12-06 | 2020-06-16 | 上海搜林信息技术有限公司 | Vehicle-mounted unit operation method and vehicle-mounted unit |
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2014
- 2014-12-30 CN CN201420859992.9U patent/CN204463235U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108711197A (en) * | 2018-05-24 | 2018-10-26 | 北京握奇智能科技有限公司 | The method and apparatus that a kind of power to board units is adaptively adjusted |
| CN108711197B (en) * | 2018-05-24 | 2021-09-17 | 北京握奇智能科技有限公司 | Method and equipment for adaptively adjusting power of vehicle-mounted unit |
| CN111292431A (en) * | 2018-12-06 | 2020-06-16 | 上海搜林信息技术有限公司 | Vehicle-mounted unit operation method and vehicle-mounted unit |
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