CN202748850U - Vehicle unit, read-write device and system for ambiguity path identification system - Google Patents

Vehicle unit, read-write device and system for ambiguity path identification system Download PDF

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Publication number
CN202748850U
CN202748850U CN 201220424615 CN201220424615U CN202748850U CN 202748850 U CN202748850 U CN 202748850U CN 201220424615 CN201220424615 CN 201220424615 CN 201220424615 U CN201220424615 U CN 201220424615U CN 202748850 U CN202748850 U CN 202748850U
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China
Prior art keywords
antenna
wireless
wireless charging
interface
charging
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CN 201220424615
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Chinese (zh)
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钟勇
刘宇
何向军
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Shenzhen Genvict Technology Co Ltd
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Abstract

The present utility model discloses an OBU and an ODU for an ambiguity path identification system, and an ambiguity path identification system. The OBU comprises a first antenna and a charging cell, and the first antenna is used for receiving wireless signals to charge the charging cell. The wireless charging function of the OBU for the ambiguity path identification system is realized, compared with the prior OBU in which a disposable cell is adopted, the OBU can be charged and used repeatedly, service life of the OBU can be prolonged, volume, thickness and weight can be reduced, and the OBU can be conveniently installed, used and maintained on a vehicle.

Description

The board units, read-write equipment and the system that are used for the ambiguous path recognition system
Technical field
The application relates to intelligent transportation (ITS:Intelligent Transportation System), relates in particular to a kind of board units for the ambiguous path recognition system (OBU:On Board Unit), read-write equipment (or claiming table-top unit ODU:On Desk Unit) and system.
Background technology
Be used for the ambiguous path recognition system that the occasions such as highway, parking lot are charged to vehicle, the OBU that installs on the vehicle is generally and has comprised IC-card at interior compound visa card, a kind of concrete use procedure of this OBU is: at first in the expressway access, OBU on the vehicle and ODU carry out communication, and ODU writes IC-card among the OBU with entrance information; When vehicle passed through a certain road, the beacon base station that arranges on this road write OBU with the ambiguity recognition data; At expressway exit, OBU carries out communication with ODU again, and ODU reads ambiguity recognition data among the OBU and the entrance information in the IC-card, information of vehicles etc., thereby finishes the charge to vehicle.
At present, this OBU adopts the larger disposable battery of electric weight usually, on the one hand, the serviceable life of OBU or use state are subject to the restriction of battery life, on the other hand, because battery itself has larger volume and weight, cause the thickness of OBU integral body large, weight is large, volume is large, for installing and use is made troubles.
Summary of the invention
The technical problem underlying that the application will solve is that a kind of OBU, the ODU and the ambiguous path recognition system that are used for the ambiguous path recognition system easy to use are provided.
For solving the problems of the technologies described above, the application provides a kind of board units for the ambiguous path recognition system, comprises the first antenna and rechargeable battery, and described the first antenna reception wireless signal is realized charging to described rechargeable battery.
Among a kind of embodiment, also comprise master control, storage card and the first charge controller, described the first antenna comprises the first wireless communication interface and the first wireless charging interface, described the first wireless communication interface is connected with described storage card, described storage card is connected with described master control, described rechargeable battery is described master control power supply, described the first charge controller is connected between described the first wireless charging interface and the rechargeable battery, and the electric energy that described the first wireless charging interface is received carries out inputting described rechargeable battery after the conversion process.
Among a kind of embodiment, described the first charge controller comprises antenna switching circuit, the voltage input end of described antenna switching circuit links to each other with described the first wireless charging interface, in the field intensity of sensing exterior antenna during greater than preset value, receive the electric energy that the wireless signal of exterior antenna provides by described the first wireless charging interface.
Among a kind of embodiment, described antenna switching circuit comprises clamping circuit.Among a kind of embodiment, described storage card is IC-card, described the first charge controller comprises the first charge switch, described IC-card is used for by after described the first wireless communication interface reception charging instruction, under the control of described master control, trigger described the first charge switch, thereby utilize described the first wireless charging interface of described the first charge switch conducting, described IC-card also is used for returning charging by described the first wireless communication interface to exterior antenna under the control of described master control and replys.
Among a kind of embodiment, described the first charge controller also comprises voltage processor, is used for by rectification circuit and filtering circuit described electric energy being carried out conversion process.
Second aspect according to the application, the application provides a kind of read-write equipment for the ambiguous path recognition system, comprise the second antenna and the second charge controller, described the second antenna comprises the second wireless charging interface, and described the second charge controller is by described the second wireless charging interface, provide electric energy with the mode of near-field coupling the first wireless charging interface of the first antenna in the board units.
Among a kind of embodiment, described the second charge controller comprises the charging voltage sensor circuit, described the second wireless charging interface of conducting when sensing charging voltage greater than preset value.
Among a kind of embodiment, described the second charge controller comprises the charging instruction transmitter, replys receiver and the second charge switch, described charging instruction transmitter sends charging instruction by the second wireless communication interface to board units, the described receiver of replying receives the charging that described board units returns by described the second wireless communication interface and replys described the second charge switch of rear triggering, thereby utilizes described the second wireless charging interface of described the second charge switch conducting.
Among a kind of embodiment, described read-write equipment also comprises module for reading and writing, and described module for reading and writing is connected with the second wireless communication interface, and described the second wireless communication interface is arranged on described the second antenna.
Described read-write equipment also comprises module for reading and writing and third antenna, states module for reading and writing and is connected with the second wireless communication interface, and described the second wireless communication interface is arranged on the described third antenna.
The third aspect according to the application, the application provides a kind of ambiguous path recognition system, comprise above-described board units, also comprise read-write equipment or charger, described read-write equipment or charger comprise the second antenna and the second charge controller, described the second antenna comprises the second wireless charging interface, and described the second charge controller is by described the second wireless charging interface, provide electric energy by wireless signal to the first wireless charging interface of described the first antenna in the mode of near-field coupling.
The application's beneficial effect is: the application has realized being used for the wireless charging function of the OBU of ambiguous path recognition system, adopt the mode of disposable battery to compare with OBU in the prior art, the OBU use of can repeatedly charging, prolonged the serviceable life of OBU, reduce simultaneously volume, thickness and weight, be convenient to the mounting, commissioning and maintenance of OBU on vehicle.
In addition, because the application's OBU utilizes the same antenna to realize wireless telecommunications and wireless charging function, further reduce equipment volume and weight, effectively reduced simultaneously the complexity of OBU structure, reduced realization cost and the difficulty of function.
Description of drawings
Fig. 1 is the OBU structured flowchart of a kind of embodiment of the application;
Fig. 2 is the first charge controller structured flowchart of a kind of embodiment of the application;
Fig. 3 is the ambiguous path recognition system structured flowchart of a kind of embodiment of the application;
Fig. 4 is the second charge controller structured flowchart of a kind of embodiment of the application;
Fig. 5 is the read-write equipment structured flowchart of the another kind of embodiment of the application.
Embodiment
By reference to the accompanying drawings the application is described in further detail below by embodiment.
In the application's embodiment, the OBU that is used for the ambiguous path recognition system adopts rechargeable battery to replace disposable non-rechargeable battery, the first antenna reception wireless signal among the OBU is realized charging to rechargeable battery, and adopt the same antenna to realize wireless telecommunications and wireless charging function, thereby reach the purpose that reduces equipment volume and increase serviceable life.
Embodiment one:
Please refer to Fig. 1, the OBU 1 that present embodiment is used for the ambiguous path recognition system mainly comprises master control, storage card, the first antenna 14, rechargeable battery 13 and the first charge controller 15.Wherein, adopt micro-control unit 11(MCU:Micro Control Unit), storage card is that IC-card 12, the first antennas 14 comprise the first wireless communication interface 141 and the first wireless charging interface 142, these two interfaces comprise two groups of different interface circuits.IC-card 12 is connected with MCU 11, and the first wireless communication interface 141 is connected with IC-card 12, is used for carrying out communication at expressway entrance and exit and ODU under the control of MCU 11, makes ODU read or write corresponding data in IC-card 12.Rechargeable battery 13 is repeatedly charging, can guarantee its normal operation to other assembly continued powers among MCU 11 or the OBU 1.The first charge controller 15 is connected between the first wireless charging interface 142 and the rechargeable battery 13, be used for control the first wireless charging interface 142 and receive exterior antenna (for example antenna of ODU or charger) with the alternating current of the form emission of near-field coupling, and the electric energy that receives carried out forming direct current after the conversion process such as rectification, filtering, at last direct current is inputted rechargeable battery 13 and charged.
Generally, OBU 1 has electric quantity detection function, after it detects the internal cell electric weight and is finished or is lower than certain value, can or export ODU or the charger transmitted signal of carrying out communication with it from trend at entrance, in the present embodiment, after ODU or charger receive internal cell electric weight that OBU 1 sends and are finished or are lower than the signal of certain value, to utilize civil power, the power supplys such as battery provide the charging voltage with some strength, and initiatively electric energy is offered the first wireless charging interface 142 of the first antenna among the OBU in the mode of near-field coupling by antenna, 1 need of OBU receive this electric energy passively, thereby are rechargeable battery 13 chargings.Perhaps among the another kind of embodiment, when OBU 1 is positioned at the signal coverage areas of ODU or charger, the antenna of ODU or charger can offer the first wireless charging interface 142 of the first antenna among the OBU with electric energy automatically in the mode of near-field coupling, thereby is OBU 1 charging.OBU 1 is undertaken in the process of wireless charging by the first wireless charging interface 142 of the first antenna 14, if the field intensity of exterior antenna signal a little less than, also can be simultaneously carry out wireless telecommunications by the first wireless communication interface 142 with ODU; If but the field intensity of exterior antenna signal is larger; then the first wireless charging interface 142 automatic conductings and enter the wireless charging state; realized the charge protection to other circuit among IC-card 12 and the OBU; namely the first wireless communication interface 141 can't continue communication because the field intensity of exterior antenna signal is excessive, could continue to enter wireless communication state after the wireless charging process is finished.In the present embodiment, wireless communication state can be finished under the control of the first charge controller 15 in several ways to the switching between the wireless charging state, for example can adopt the mode of field intensity judgement or the mode of instruction control.
Embodiment two:
Among the embodiment as shown in Figure 2, the mode that the first charge controller among the OBU is judged by field intensity realizes that wireless communication state is to the switching between the wireless charging state.
The first charge controller mainly comprises antenna switching circuit 151 and coupled voltage processor 153, and antenna switching circuit 151 comprises current-sensing circuit, and this current-sensing circuit can be clamping circuit 152, for example diode clamping circuit.The voltage input end of antenna switching circuit 151 links to each other with the first wireless charging interface in the first antenna, and the field intensity that is used for exterior antenna signal that the first wireless charging interface is received is carried out passive judgement.Under the default conditions, the first wireless communication interface is conducting state, namely the first antenna can carry out communication by the first wireless communication interface and ODU, if it is less that antenna switching circuit 151 detects the field intensity of exterior antenna signal, for example less than or equal to 7.5A/m, then clamping circuit 152 not conductings and can't carry out wireless charging, the first antenna continues the state of keeping in communication; On the contrary, if the field intensity of exterior antenna signal is greater than preset value, for example greater than 7.5A/m, then clamping circuit 152 conductings, the electric energy that the first wireless charging interface 141 can receive the exterior antenna input makes the first antenna 14 enter the wireless charging state, and utilize clamping circuit 152 with electric energy input voltage processor 153, and utilize rectification circuit 154 and filtering circuit 155 in the voltage processor 153 successively alternating current to be carried out converting direct current to after rectification and the filtering processing.
Embodiment three:
Among the embodiment as shown in Figure 3, the first charge controller among the OBU realizes that by the mode of instruction control wireless communication state is to the switching between the wireless charging state.
In the present embodiment, storage card is IC-card, the first charge controller comprises the first charge switch, IC-card is used for the first wireless communication interface by the first antenna to ODU or charger after the charging instruction by the exterior antenna transmission, under the control of MCU, trigger the first charge switch in the first charge controller, thereby utilize the first charge switch conducting the first wireless charging interface, IC-card is also under the control of MCU, the first wireless communication interface returns charging to ODU or charger and replys, after ODU or charger receive that charging is replied, can begin to utilize exterior antenna to provide electric energy to the first wireless charging interface in the mode of near-field coupling.
Embodiment four:
Among the above embodiment one to three, OBU can carry out wireless charging by the charger with outside antenna, and charger, ODU and OBU form the ambiguous path recognition system.As shown in Figure 3, the present embodiment is used for OBU 1, ODU 2 and the charger 3 that the ambiguous path recognition system comprises above each embodiment, wherein, ODU 2 comprises third antenna 21 and module for reading and writing 22, third antenna 21 comprises the second wireless communication interface 211, module for reading and writing 22 carries out wireless telecommunications by this second wireless communication interface 211 with OBU 1, thereby reads or write corresponding data in OBU 1.
Concrete communication steps between OBU 1 and the ODU 2 is as follows:
Third antenna 21 emissions among a, the ODU 2 are wireless signal searches OBU 1 periodically;
In case b OBU 1 enters the communicating wireless signals zone of third antenna 21, beginning is returned response message to third antenna 21, thereby sets up wireless communication link with third antenna 21;
C, third antenna 21 firing orders are verified the identity of OBU 1, if checking is verified by then entering steps d not by then stopping communication;
D, third antenna 21 firing orders, the identity of 1 couple of ODU 2 of OBU are verified, if checking is verified by then entering step e not by then stopping communication (this step can be omitted);
E, third antenna 21 firing orders carry out read-write operation to OBU 1.
Charger 3 has wireless charging function, mainly comprise the second antenna 31 and the second charge controller 32, the second antenna 31 comprises that as exterior antenna the second wireless charging interface 311, the second charge controllers 32 are used for by the second wireless charging interface 31, provide electric energy with the mode of near-field coupling the first wireless charging interface 142 of the first antenna 14 in embodiment one to three OBU.
Charger 3 is as charging equipment initiatively, be finished or after electric weight is lower than the signal of certain value at the electric weight that receives the rechargeable battery that OBU sends, can initiatively utilize the power supplys such as civil power, battery that the charging voltage with some strength is provided, and the second wireless charging interface 311 of conducting the second antenna 31 initiatively offer electric energy the first wireless charging interface of the first antenna among the OBU 1 in the mode of near-field coupling; Perhaps when OBU was positioned at the signal coverage areas of charger 3, charger 3 also can be the OBU charging automatically.
In order to realize the charge protection of OBU 1, charger 3 also can be according to OBU 1 at wireless communication state to the switching mode between the wireless charging state, adopt mode that charging signals judges or the mode of instruction control to carry out wireless charging control.When the mode that for example adopts charging signals to judge realizes wireless charging control, the second charge controller 32 comprises the charging voltage sensor circuit, the charging voltage of sensing input when this charging voltage sensor circuit is during greater than preset value, will conducting the second wireless charging interface 311; When the mode that adopts instruction to control realizes wireless charging control, as shown in Figure 4, the second charge controller 32 comprises charging instruction transmitter 321, replys receiver 322 and the second charge switch 323, charging instruction transmitter 321 is used for sending charging instruction by the second antenna 31 to OBU 1, reply after receiver 321 is used for receiving charging that OBU return and replying by the second antenna 31, trigger the second charge switch 323, thereby utilize the second charge switch 323 conductings the second wireless charging interface 311, can begin OBU 1 is carried out wireless charging.
Embodiment five:
The present embodiment provides a kind of ODU for the ambiguous path recognition system, integrated charger function among the embodiment four among this ODU, can with above embodiment one to three in OBU form the ambiguous path recognition system, owing to need not the separately charger of setting, significantly improved device integration, simplify system architecture, reduced equipment volume.
In the present embodiment, ODU can have two antennas, namely have the second wireless communication interface, be used for to realize the second antenna of wireless charging function, and have the second wireless communication interface, be used for to realize wireless communication function third antenna, module for reading and writing carries out wireless telecommunications by this second wireless communication interface and OBU.The ODU that perhaps another kind of integrated level is higher as shown in Figure 5, ODU only has i.e. the second antenna 31 of an antenna, it comprises the second wireless charging interface 311 and the second wireless communication interface 211, and these two interfaces are respectively applied to realize wireless charging function and the wireless charging function of 2 couples of OBU of ODU.These two kinds of ODU all also comprise the second charge controller 32, the second charge controllers 32 control the second wireless charging interface 311, with the mode of near-field coupling in the embodiment one to three among the OBU the first wireless charging interface of the first antenna electric energy is provided.
Be similar to embodiment four, in order to realize the charge protection of OBU, ODU also can be according to OBU at wireless communication state to the switching mode between the wireless charging state, adopt mode that charging signals judges or the mode of instruction control to carry out wireless charging control.When the mode that for example adopts charging signals to judge realizes wireless charging control, the second charge controller 32 comprises the charging voltage sensor circuit, the charging voltage of sensing input when this charging voltage sensor circuit is during greater than preset value, will conducting the second wireless charging interface 311; When the mode that adopts instruction to control realizes wireless charging control, as shown in Figure 5, the second charge controller 32 comprises charging instruction transmitter 321, reply receiver 322 and the second charge switch 323, charging instruction transmitter 321 is used for sending charging instruction by the second wireless communication interface 211 of the second antenna 31 to OBU 1, reply after receiver 322 is used for receiving charging that OBU return and replying by the second wireless communication interface 211, trigger the second charge switch 323, thereby utilize the second charge switch 323 conductings the second wireless charging interface 311, can begin OBU is carried out wireless charging.
Above content is the further description of the application being done in conjunction with concrete embodiment, can not assert that the application's implementation is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite that does not break away from the application's design, can also make some simple deduction or replace, all should be considered as belonging to the application's protection domain.

Claims (12)

1. board units that is used for the ambiguous path recognition system, it is characterized in that: comprise the first antenna and rechargeable battery, described the first antenna reception wireless signal is realized charging to described rechargeable battery.
2. board units as claimed in claim 1, it is characterized in that, also comprise master control, storage card and the first charge controller, described the first antenna comprises the first wireless communication interface and the first wireless charging interface, described the first wireless communication interface is connected with described storage card, described storage card is connected with described master control, described rechargeable battery is described master control power supply, described the first charge controller is connected between described the first wireless charging interface and the rechargeable battery, and the electric energy that described the first wireless charging interface is received carries out inputting described rechargeable battery after the conversion process.
3. board units as claimed in claim 2, it is characterized in that, described the first charge controller comprises antenna switching circuit, the voltage input end of described antenna switching circuit links to each other with described the first wireless charging interface, in the field intensity of sensing exterior antenna during greater than preset value, receive the electric energy that the wireless signal of exterior antenna provides by described the first wireless charging interface.
4. board units as claimed in claim 3 is characterized in that, described antenna switching circuit comprises clamping circuit.
5. board units as claimed in claim 2, it is characterized in that, described storage card is IC-card, described the first charge controller comprises the first charge switch, described IC-card is used for by after described the first wireless communication interface reception charging instruction, under the control of described master control, trigger described the first charge switch, thereby utilize described the first wireless charging interface of described the first charge switch conducting, described IC-card also is used for returning charging by described the first wireless communication interface to exterior antenna under the control of described master control and replys.
6. such as each described board units among the claim 2-5, it is characterized in that, described the first charge controller also comprises voltage processor, is used for by rectification circuit and filtering circuit described electric energy being carried out conversion process.
7. read-write equipment that is used for the ambiguous path recognition system, it is characterized in that, comprise the second antenna and the second charge controller, described the second antenna comprises the second wireless charging interface, and described the second charge controller is by described the second wireless charging interface, provide electric energy in the mode of near-field coupling by wireless signal first wireless charging interface of the first antenna in the board units.
8. read-write equipment as claimed in claim 7 is characterized in that, described the second charge controller comprises the charging voltage sensor circuit, described the second wireless charging interface of conducting when sensing charging voltage greater than preset value.
9. read-write equipment as claimed in claim 7, it is characterized in that, described the second charge controller comprises the charging instruction transmitter, replys receiver and the second charge switch, described charging instruction transmitter sends charging instruction by the second wireless communication interface to board units, the described receiver of replying receives the charging that described board units returns by described the second wireless communication interface and replys described the second charge switch of rear triggering, thereby utilizes described the second wireless charging interface of described the second charge switch conducting.
10. such as each described read-write equipment among the claim 7-9, it is characterized in that, described read-write equipment also comprises module for reading and writing, and described module for reading and writing is connected with the second wireless communication interface, and described the second wireless communication interface is arranged on described the second antenna.
11. such as each described read-write equipment among the claim 7-9, it is characterized in that, described read-write equipment also comprises module for reading and writing and third antenna, and described module for reading and writing is connected with the second wireless communication interface, and described the second wireless communication interface is arranged on the described third antenna.
12. ambiguous path recognition system, it is characterized in that, comprise each described board units among the claim 1-6, also comprise read-write equipment or charger, described read-write equipment or charger comprise the second antenna and the second charge controller, described the second antenna comprises the second wireless charging interface, and described the second charge controller is by described the second wireless charging interface, provide electric energy in the mode of near-field coupling to the first wireless charging interface of described the first antenna.
CN 201220424615 2012-08-24 2012-08-24 Vehicle unit, read-write device and system for ambiguity path identification system Ceased CN202748850U (en)

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Application Number Priority Date Filing Date Title
CN 201220424615 CN202748850U (en) 2012-08-24 2012-08-24 Vehicle unit, read-write device and system for ambiguity path identification system

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Application Number Priority Date Filing Date Title
CN 201220424615 CN202748850U (en) 2012-08-24 2012-08-24 Vehicle unit, read-write device and system for ambiguity path identification system

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CN202748850U true CN202748850U (en) 2013-02-20

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CN 201220424615 Ceased CN202748850U (en) 2012-08-24 2012-08-24 Vehicle unit, read-write device and system for ambiguity path identification system

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103164173A (en) * 2013-03-26 2013-06-19 华为技术有限公司 Memory card and data storage method
CN104935275A (en) * 2014-03-21 2015-09-23 深圳市金溢科技股份有限公司 Power amplifier and charging device for wireless batch charging

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103164173A (en) * 2013-03-26 2013-06-19 华为技术有限公司 Memory card and data storage method
CN104935275A (en) * 2014-03-21 2015-09-23 深圳市金溢科技股份有限公司 Power amplifier and charging device for wireless batch charging
CN104935275B (en) * 2014-03-21 2018-09-18 深圳市金溢科技股份有限公司 A kind of power amplifier and charging unit for wireless batch charging

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Patentee before: Shenzhen Jinyi Technologies Co., Ltd.

Address after: Nanshan District Keyuan Road Shenzhen city Guangdong province 518057 Tsinghua building A building 12 layer

Patentee after: SHENZHEN GENVICT TECHNOLOGY CO., LTD.

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