CN104217229A - High arousal sensitivity card, OBU, OBU component and communication method - Google Patents
High arousal sensitivity card, OBU, OBU component and communication method Download PDFInfo
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- CN104217229A CN104217229A CN201310218877.3A CN201310218877A CN104217229A CN 104217229 A CN104217229 A CN 104217229A CN 201310218877 A CN201310218877 A CN 201310218877A CN 104217229 A CN104217229 A CN 104217229A
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Abstract
The present application discloses a high arousal sensitivity card, an OBU, an OBU component and a communication method. Before arousal of the OBU, and after the high arousal sensitivity card is connected to the OBU, the high arousal sensitivity card extracts a signal to be detected from initial signals received by the OBU, and amplifying the same so as to meet requirements of validity detection of the arousal signal, then the obtained signal to be detected after amplified is performed with the validity detection of the arousal signal, and after the signal to be detected is detected to be a valid arousal signal, an interrupt signal is sent back to the OBU to arouse the OBU. In this way, after the signal to be detected, it is sufficient to perform the validity detection, thereby triggering OBU arousal when the signal to be detected is valid, which greatly increases the success rate of OBU arousal, and ensures the success of the ETC trade.
Description
Technical field
The application relates to intelligent transportation field, relates in particular to a kind of high sensitivity card, OBU, OBU assembly and communication means of waking up.
Background technology
Electric non-stop toll (Electronic Toll Collection, ETC) be a kind of do not need to stop pay the fees the toll collection technique by charge station.Vehicle completes charging process by installation car carrier unit (On-Board Unit, OBU) and roadside unit (Road-Side Unit, RSU) communication.OBU stores its identity identification information, information of vehicles (as license plate number, vehicle etc.) etc., and can read card image.RSU is generally arranged on the portal frame of charge station's track front end, and it is first by sending wake-up signal to OBU, and OBU is waken up afterwards and RSU carries out wireless telecommunications, and RSU obtains card image and sends it to charge subsystem from OBU, completes corresponding fee deduction treatment.
Along with the development of car industry, more and more wider with windshield range of application on vehicle of metallic insulation layer.When microwave passes through metallic insulation layer, the metal cation component meeting microwave energy absorbing in metallic insulation layer, causes microwave significantly to be decayed, according to measurement, metallic insulation layer can reach 20-40dB to the decay of microwave, and this just means, in microwave, 99% energy is all sponged by windshield.Wake-up signal is a kind of as microwave signal, and when by metallic insulation layer, the energy of wake-up signal is significantly weakened.Adopt the larger metallic insulation layer of microwave attenuation amplitude, can cause OBU cannot wake to complete communication transaction with RSU up, thereby vehicle cannot normally pass through ETC track.
In addition, raising due to product integrated level, product generally adopts unified specification batch production, and user can plate different types of metallic insulation layer according to different demands on windshield, general OBU can meet wake-up signal through decaying after less metallic insulation layer, still can wake OBU up and complete communication transaction, and for decay compared with for large metallic insulation layer, possibly cannot wake OBU up.
Summary of the invention
The application provides a kind of high sensitivity card, OBU, OBU assembly and communication means of waking up, and the success ratio of waking up to improve OBU is guaranteed the success of ETC transaction, and made OBU can meet the requirement of different microwave attenuation scenes.
According to the application's first aspect, the application provides a kind of high sensitivity card that wakes up, comprising:
Detect control circuit, for before OBU wakes up, to extracting signal to be detected the initialize signal receiving from described OBU and it being amplified to process, make it meet the requirement of wake-up signal validation checking, described amplification is processed to gained signal to be detected and carry out wake-up signal validation checking, and to OBU, return to look-at-me to wake OBU up detecting after described signal to be detected is effective wake-up signal;
The card interface circuit being connected with described detection control circuit, for based on being connected with the plug type of described OBU, completes described OBU and detects the signal transfer between control circuit.
According to the application's second aspect, the application provides a kind of OBU, comprising:
Antenna;
Main control module, for before waking up, control sends to height by the initialize signal from described antenna reception and wakes sensitivity card up, and at described height, wake sensitivity card up initialize signal is extracted to signal to be detected, described signal to be detected is amplified to process and make after its requirement that meets wake-up signal validation checking, when described signal to be detected being detected and be effective wake-up signal, from described height, wake sensitivity clamping up and receive look-at-me to carry out wake up process;
Master interface circuit, is connected for the plug type based on waking sensitivity card up with described height, completes described main control module and the high signal transfer waking up between sensitivity card is processed.
According to the application's the third aspect, the application provides a kind of OBU assembly, comprises that height described above wakes sensitivity card up, and OBU described above.
According to the application's fourth aspect, the application provides a kind of communication means of OBU assembly, and described method, based on OBU assembly described above, comprising:
Before described OBU wakes up, described height wakes sensitivity card up makes it meet the requirement of wake-up signal validation checking to extracting signal to be detected the initialize signal receiving from OBU and it being amplified to process, described amplification is processed to gained signal to be detected and carry out wake-up signal validation checking, and to OBU, return to look-at-me detecting after described signal to be detected is effective wake-up signal;
Described OBU carries out wake up process according to look-at-me.
The application's beneficial effect is:
By a kind of high sensitivity card that wakes up is provided, OBU, OBU assembly and communication means, before OBU wakes up, after height wakes sensitivity card up and is connected with OBU, height wakes sensitivity card up makes it meet the requirement of wake-up signal validation checking to extracting signal to be detected the initialize signal receiving from OBU and it being amplified to process, then to amplifying processing gained signal to be detected, carry out wake-up signal validation checking, and after signal to be detected being detected and being effective wake-up signal, to OBU, return to look-at-me to wake OBU up, like this, signal to be detected amplifies metapedes to carry out validation checking, thereby when signal to be detected is effective wake-up signal, wake-up OBU, greatly improved the success ratio that OBU wakes up, guaranteed the success of ETC transaction, in environment, microwave attenuation hour, can adopt separately OBU to communicate, and microwave attenuation is when larger, can in OBU, assemble highly to wake sensitivity up and stick into Serial Communication, has further guaranteed the ETC Transaction Success under varying environment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the OBU assembly of the embodiment of the present application one;
Fig. 2 is the process flow diagram of communication means of the OBU assembly of the embodiment of the present application one;
Fig. 3 is the structural representation of the OBU assembly of the embodiment of the present application two;
Fig. 4 is the structural representation of the OBU assembly of the embodiment of the present application three;
Fig. 5 is the high structural representation that wakes the detection control circuit 1021 of sensitivity card 102 up in each embodiment of the application;
Fig. 6 is the configuration schematic diagram of zero crossing frequency detecting chip 504 in the embodiment of the present application.
Embodiment
Below by embodiment, by reference to the accompanying drawings the application is described in further detail.
Embodiment mono-:
Please refer to Fig. 1, the present embodiment is mainly applicable to the situation that microwave attenuation is larger, the OBU assembly of the present embodiment mainly comprises OBU101 and wakes sensitivity card 102 up with the matching used height of OBU101, wherein, OBU101 mainly comprises connected antenna 1011, main control module 1012 and master interface circuit 1013, and high wake sensitivity card 102 up and mainly comprise connected detection control circuit 1021 and card interface circuit 1022.
Antenna 1011 is transmittings or receives electromagnetic device;
Main control module 1012 is for before OBU101 wakes up, to connected height, wake sensitivity card 102 up and send configuration signal, at height, waking sensitivity card 102 up completes after the configuration of processing signals according to configuration signal, control sends to height by the initialize signal receiving from antenna 1011 and wakes sensitivity card 102 up, and at height, wake sensitivity card up initialize signal is extracted to signal to be detected, treat detection signal and amplify processing, signal to be detected is met after the requirement of wake-up signal validation checking, when signal to be detected being detected and be effective wake-up signal, from height, wake sensitivity card 102 receive interruption signals up to wake OBU up and to wake aftertreatment up, main control module 1011 can be micro-control unit (Micro Controlling Unit, MCU) or other types controller, wherein can burned control program to control mode of operation and the workflow of whole OBU101.
Master interface circuit 1013 is connected for the plug type based on waking sensitivity card 102 up with height, completes the signal transfer that height wakes up between sensitivity card 102 and main control module 1012 and processes.Master interface circuit 1013 mates mutually with follow-up card interface circuit 1022 models, thereby can complete, wakes the electrical connection of plug type between sensitivity card 102 up and with height after being connected, and height wakes up between sensitivity card 102 and communicates.
Detect control circuit 1021 for before OBU101 wakes up, the configuration signal obtaining according to the OBU101 from connected is carried out the configuration of processing signals, and make it meet the requirement of wake-up signal validation checking to extracting signal to be detected the initialize signal receiving from OBU101 and it being amplified to process, to amplifying processing gained signal to be detected, carry out wake-up signal validation checking, and after signal to be detected being detected and being effective wake-up signal, to OBU101, return to look-at-me to wake OBU101 up; For example, when initial signal intensity is attenuated to-30dbm, and the signal strength threshold value that will carry out wake-up signal validation checking is during for-40dbm, detect control circuit 1021 can treat detection signal amplifies processing make its reach-40dbm ,-45dbm or-50dbm etc., make to amplify processing gained signal to be detected and can carry out wake-up signal validation checking, and then when input to be detected is effective wake-up signal, wake-up OBU101.
Card interface circuit 1022 is connected with detection control circuit, and it,, for based on being connected with the plug type of OBU101, completes OBU101 and detect the signal transfer processing between control circuit 1021.
Correspondingly, the present embodiment also provides a kind of communication means based on above-mentioned OBU assembly, and it mainly comprises flow process as shown in Figure 2:
Step 201, user wakes height up sensitivity card 102 and inserts in OBU101, makes OBU101 and height wake sensitivity card 102 up and completes electrical connection;
Step 202, before OBU101 wakes up, OBU101 wakes sensitivity card 102 up to height and sends configuration signal;
Step 203, height wakes sensitivity card 102 up and according to configuration signal, carries out the configuration of processing signals, and particularly, height wakes sensitivity card 102 up and according to configuration signal, is ready to extraction to signal, amplification, wake-up signal validation checking etc. and processes and prepare;
Step 204, OBU101 receives and initialize signal is sent to height after initialize signal and wake sensitivity card 102 up;
Step 205, height wakes sensitivity card 102 up from OBU101 receives initialize signal, from initialize signal, extract signal to be detected, and treat detection signal and amplify to process and make signal to be detected meet the requirement of wake-up signal validation checking, to amplify processing gained signal to be detected, carry out wake-up signal validation checking again, and to OBU101, return to look-at-me detecting after signal to be detected is effective wake-up signal;
Step 206, OBU101 wakes sensitivity card 102 receive interruption signals up to wake OBU101 up and to wake aftertreatment up from height, OBU101 is waken up after signal activation, can be switched to duty from dormant state, thereby can complete alternately with RSU a series of communication processs such as follow-up checking, transaction.
It should be noted that, hour, OBU101 can not wake sensitivity card 102 up with height and be used in combination microwave attenuation, and OBU101 carries out separately work, completes and wakes and wake up aftertreatment up.
Embodiment bis-:
Please refer to Fig. 3, the OBU assembly of the present embodiment and embodiment mono-difference are mainly: height wakes sensitivity card 102 up and also comprises: transmitting amplifying circuit 1023, it is connected with card interface circuit 1022, for after OBU101 is waken up, the service signal to be sent receiving is amplified, returns to OBU101 send by card interface circuit 1022 from OBU101.And OBU101 also comprises the first receiving branch 1014, transmitting-receiving processing module 1015, the first transmitting branch 1016 and radio-frequency (RF) switch 1017, the first receiving branch 1014 connects respectively antenna 1011, master interface circuit 1013 and main control module 1012, transmitting-receiving processing module 1015 is connected with main control module 1012, the first transmitting branch 1016 is connected with antenna 1011, master interface circuit 1013 and transmitting-receiving processing module 1015 respectively, and radio-frequency (RF) switch 1017 is connected with main control module 1012.
Radio-frequency (RF) switch 1017 is for before OBU101 wakes up, under main control module 1012 is controlled, gating the first receiving branch 1014, so that being transferred to height, the initialize signal receiving from antenna 1011 wakes sensitivity card 102 up, thereby height wakes sensitivity card up from OBU101 receives initialize signal, from initialize signal, extract signal to be detected, and treat detection signal and amplify to process and make signal to be detected meet the requirement of wake-up signal validation checking, to amplifying processing gained signal to be detected, carry out wake-up signal validation checking again, and to OBU101, return to look-at-me detecting after signal to be detected is effective wake-up signal, to wake OBU101 up, after OBU101 wakes up, radio-frequency (RF) switch 1017 is under main control module 1012 is controlled, gating the first transmitting branch 1016, the service signal to be sent obtaining from transmitting-receiving processing module is transferred to height, wake sensitivity card 102 up and amplifies processings, and the service signal to be sent of amplification processing gained is transferred to antenna 1011 send.
And correspondingly, the communication means of the OBU assembly of the present embodiment and embodiment mono-difference are mainly: the method also comprises: after OBU101 wakes up, OBU101 transfers to height by service signal to be sent and wakes sensitivity card 102 up and amplify processing, and the service signal to be sent that gained is processed in the amplification of returning is sent.
Embodiment tri-:
Please refer to Fig. 4, the OBU assembly of the present embodiment and embodiment bis-differences are mainly: OBU101 also comprises the second receiving branch 1018 and the second transmitting branch 1019, wherein, the second receiving branch 1018 is connected with antenna 1011 and transmitting-receiving processing module 1015 respectively, and the second transmitting branch 1019 is connected with antenna 1011 and transmitting-receiving processing module 1015 respectively.
When main control module 1012 detects and is not connected with height and wakes sensitivity card 102 up, after OBU101 is waken up, control radio-frequency (RF) switch 1017 gating the second transmitting branches 1019 and send so that the service signal to be sent obtaining from transmitting-receiving processing module 1015 is transferred to antenna 1011, and gating the second receiving branch 1018 transfers to transmitting-receiving processing module 1015 so that the business receiving from antenna 1011 is received to signal; When main control module 1012 detects and is connected with height and wakes sensitivity card 102 up, after OBU101 wakes up, controlling radio-frequency (RF) switch 1017 gating the first transmitting branches 1016 wakes sensitivity card 102 up and amplifies processing the service signal to be sent obtaining from transmitting-receiving processing module 1015 is transferred to height, and service signal to be sent that amplify to process gained is transferred to antenna 1011 send, and gating the second receiving branch 1018 transfers to transmitting-receiving processing module 1015 so that the business receiving from antenna 1011 is received to signal.
And correspondingly, the communication means of the OBU assembly of the present embodiment and embodiment bis-differences are mainly: whether OBU101 detection is connected with height is waken sensitivity card 102 up, if, after OBU101 wakes up, service signal to be sent is transferred to height and wake sensitivity card 102 up and amplify processing, and send amplifying the service signal to be sent of processing gained; Otherwise, directly service signal to be sent is sent.
Implement the present embodiment, can realize in OBU101 configuration or the switching that do not configure in high two kinds of situations waking sensitivity card 102 up and using, in two kinds of situations, all can complete that OBU wakes up, service signal sends and the function such as reception, has guaranteed the ETC Transaction Success under the varying environment less at microwave attenuation, microwave attenuation is larger.
When concrete application, for realizing the high amplification that wakes 102 pairs of wake-up signals of sensitivity card up, it detects control circuit 1021 can specifically comprise structure as shown in Figure 5:
Bandwidth-limited circuit 501, for the initialize signal receiving from OBU101 is extracted and presets frequency band signals, for example, presetting frequency range is 5.79-5.84GHz;
Detecting circuit 502, is connected with bandwidth-limited circuit 501, for extracting baseband signal from presetting frequency band signals, for example, can from preset the signal that frequency range is 5.79-5.84GHz, remove HFS, retains baseband signal;
Pre-amplification circuit 503, is connected with detecting circuit 502, for baseband signal being carried out to preposition amplification processing, obtain signal to be detected, this pre-amplification circuit 503 can be low frequency and amplifies pipe fitting, can carry out faint amplification processing to baseband signal, to improve, wakes sensitivity up;
Zero crossing frequency detecting chip 504, be connected with pre-amplification circuit 503, for treat detection signal with the amplifying parameters presetting, amplify after processing, whether the frequency that processing gained signal to be detected is amplified in judgement meets the wake-up signal frequency requirement presetting, if, export look-at-me to OBU101 to wake OBU101 up, for example, the wake-up signal frequency requirement presetting is 11K-25KHz, when signal frequency to be detected is 14KHz, signal frequency to be detected meets wake-up signal frequency requirement, this signal to be detected is effective wake-up signal, now, zero crossing frequency detecting chip 504 sends a look-at-me to OBU101, OBU101 wakes up and wakes up afterwards and the transaction communications of RSU after this look-at-me being detected.Zero crossing frequency detecting chip 504 can adopt AS3933 chip as shown in Figure 6, and it has the function of adjusting sensitivity (amplifying parameters is set) and frequency-selecting.The duty of AS3933 chip is divided into listen mode and awakening mode.When listen mode, working current is 1.7uA, be 2.7uA to the maximum, the satisfied wake-up signal frequency requirement presetting of frequency when signal to be detected, to exit listen mode and enter into awakening mode, and detection obtains the received signal strength indicator value (Received Signal Strength Indicator, RSSI) of signal to be detected.When awakening mode, obtain stable RSSI value, and produce look-at-me, send to the main control module 1012 of OBU101, make OBU101 enter wake-up states.
And card interface circuit 1022 can corresponding integrated various interface circuit, as sent the card detection signal interface circuit of configuration signal to trigger OBU101 for send to connect indicator signal to OBU101, for carrying out the configuration of processing signals and the SPI interface circuit of output look-at-me according to the configuration signal obtaining from OBU101, for receive the radiofrequency signal interface circuit of initialize signal from OBU101, and power interface circuit etc., correspondingly, master interface circuit 1013 is configured too.
Correspondingly, the communication means of the OBU assembly of the present embodiment can also comprise the calibration process of waking as follows sensitivity up:
First step, OBU101 enters after calibration mode, obtains the pad value that the OBU being intercepted by windshield receives signal;
Second step, the amplifying parameters that OBU101 wakes up height according to pad value in the amplification detection chip 504 of sensitivity card 102 is configured, thereby determines the sensitivity that wakes up of whole OBU assembly.
Above-mentioned first step specifically can comprise: first, OBU obtains the signal strength values of the OBU not intercepted by windshield.When carrier only test I C card is sent out in OBU insertion, OBU recognizes and sends out a carrier only test I C card, can activate radio circuit, launches the high frequency carrier only signal of certain signal intensity.OBU is aimed at checkout equipment (as calibration device etc.) the fixed range place certain apart from OBU, and recording its signal strength values is A.Secondly, obtain the signal strength values of the OBU being intercepted by windshield.Again OBU is installed or is placed on car front windshield inner side, continue to insert and send out carrier only test I C card, equally also can send the high frequency carrier only signal of same signal intensity.Checkout equipment is in car front windshield outside, keeps and the fixed range place during before not with glass, and recording its signal strength values is B.Then, by calculating, obtain the pad value that the OBU being intercepted by windshield receives signal, the signal strength values of OBU and the difference of the signal strength values of the OBU being intercepted by windshield of pad value for not intercepted by windshield.Finally, by calculating glass, to the pad value of microwave signal, be C=A-B; Be in air, estimate signal strength values A be the pad value of glass to microwave signal with the difference of the signal strength values B that records with glass.
Above-mentioned second step specifically can comprise: first, OBU determines the sensitivity gear adjusted value of OBU according to pad value, secondly, OBU is according to sensitivity gear adjusted value be stored in the mapping table that height wakes the amplifying parameters of sensitivity gear in sensitivity card and AS3933 chip up and obtain amplifying parameters adjusted value.Measure the windshield obtaining larger to the pad value of microwave signal, the sensitivity gear that OBU is set is higher, and amplifying parameters is higher; Pad value is less, and the sensitivity gear that OBU is set is lower, and amplifying parameters is lower.OBU sends demarcation signal and wakes sensitivity card up to height, and the AS3933 chip that height is waken up in sensitivity card carries out the adjustment of corresponding amplifying parameters, thereby finally the sensitivity that wakes up of whole OBU assembly is demarcated.
Correspondingly, the main control module in OBU101 1012 can also comprise following structure:
The first control module, for before waking up, control sends to height by the initialize signal receiving from antenna 1011 and wakes sensitivity card 102 up, and at height, wake 102 pairs of initialize signals of sensitivity card up and extract signal to be detected, treating detection signal amplifies to process and makes after its requirement that meets wake-up signal validation checking, when signal to be detected being detected and be effective wake-up signal, from height, wake sensitivity card 102 receive interruption signals up;
Wake module, for carrying out wake up process according to look-at-me;
Memory module, for storing sensitivity gear and amplifying parameters mapping table;
The second control module, the pad value for receiving signal according to the OBU being intercepted by windshield, is identified for configuring the high amplifying parameters of waking sensitivity card 102 up.
Particularly, the second control module can comprise:
Determining unit, for determining sensitivity gear adjusted value according to pad value;
Search unit, for search the amplifying parameters adjusted value corresponding with sensitivity gear adjusted value from mapping table;
Dispensing unit, for the configuration of gained amplifying parameters adjusted value is high wakes sensitivity card up to search, and then configures the sensitivity that wakes up of whole OBU assembly.
In other embodiments, OBU101 can also comprise ESAM module, OLED display module, voice broadcast module and IC-card module.ESAM module is for storage key signal and customer information, OLED display module and voice broadcast module are used for the Transaction Information or the data that show the duty of electronic tag and show appointment, as remaining sum and type of card etc., it is people's machine platform that OBU and user carry out information interaction.IC-card module is used for and is responsible for and external memory storage IC-card information interaction.
It should be noted that, when OBU101 does not wake the 102 assembling use of sensitivity card up with height, its can meet OBU wake up sensitivity for-40dbm the ETC arm's length transaction demand during to-50dbm, at OBU101 and height, wake 102 assemblings of sensitivity card up while using, it can meet OBU and wake sensitivity up for-60dbm or ETC arm's length transaction demand when above.
Above content is the further description of the application being done in conjunction with concrete embodiment, can not assert that the application's concrete enforcement is confined to these explanations.For the application person of an ordinary skill in the technical field, not departing under the prerequisite of the application's design, can also make some simple deduction or replace.
Claims (15)
1. the high sensitivity card that wakes up, is characterized in that, comprising:
Detect control circuit, for before OBU wakes up, to extracting signal to be detected the initialize signal receiving from described OBU and it being amplified to process, make it meet the requirement of wake-up signal validation checking, described amplification is processed to gained signal to be detected and carry out wake-up signal validation checking, and to OBU, return to look-at-me to wake OBU up detecting after described signal to be detected is effective wake-up signal;
The card interface circuit being connected with described detection control circuit, for based on being connected with the plug type of described OBU, completes described OBU and detects the signal transfer between control circuit.
2. height as claimed in claim 1 wakes sensitivity card up, it is characterized in that, described height wakes sensitivity card up and also comprises:
The transmitting amplifying circuit being connected with described card interface circuit, after being waken up at described OBU, returning to OBU the service signal to be sent receiving is amplified send by described card interface circuit from OBU.
3. height as claimed in claim 1 wakes sensitivity card up, it is characterized in that, described detection control circuit comprises:
Extract circuit, for the initialize signal receiving from described OBU is extracted to signal to be detected;
The zero crossing frequency detecting chip being connected with described detecting circuit, for the amplifying parameters to preset, described signal to be detected is amplified after processing, whether the frequency that processing gained signal to be detected is amplified in judgement meets the wake-up signal frequency requirement presetting, if so, export described look-at-me to OBU.
4. height as claimed in claim 3 wakes sensitivity card up, it is characterized in that, described zero crossing frequency detecting chip is AS3933 chip.
5. height as claimed in claim 3 wakes sensitivity card up, it is characterized in that, described extraction circuit comprises:
Bandwidth-limited circuit, for by the frequency band signals that presets extracting from described initialize signal;
The detecting circuit being connected with described bandwidth-limited circuit, for extracting baseband signal from the described frequency band signals that presets;
The signal pre-amplification circuit being connected with described detecting circuit and zero crossing frequency detecting chip respectively, obtains signal to be detected for described baseband signal being carried out to preposition amplification processing.
6. an OBU, is characterized in that, comprising:
Antenna;
Main control module, for before waking up, control sends to height by the initialize signal from described antenna reception and wakes sensitivity card up, and at described height, wake sensitivity card up initialize signal is extracted to signal to be detected, described signal to be detected is amplified to process and make after its requirement that meets wake-up signal validation checking, when described signal to be detected being detected and be effective wake-up signal, from described height, wake sensitivity clamping up and receive look-at-me to carry out wake up process;
Master interface circuit, is connected for the plug type based on waking sensitivity card up with described height, completes described main control module and the high signal transfer waking up between sensitivity card is processed.
7. OBU as claimed in claim 6, is characterized in that, described OBU also comprises:
The first receiving branch that connects respectively described antenna, master interface circuit and main control module;
The transmitting-receiving processing module being connected with described main control module;
The first transmitting branch being connected with described antenna, master interface circuit and transmitting-receiving processing module respectively;
The radio-frequency (RF) switch being connected with described main control module, for before waking up under main control module is controlled, the first receiving branch wakes sensitivity card up so that the initialize signal from antenna reception is transferred to height described in gating; After waking up under main control module is controlled, described in gating, the first transmitting branch wakes sensitivity card up and amplifies processings the service signal to be sent obtaining from transmitting-receiving processing module is transferred to height, and the service signal to be sent of amplification processing gained is transferred to described antenna sends.
8. OBU as claimed in claim 7, is characterized in that, described OBU also comprises:
The second receiving branch being connected with described antenna and transmitting-receiving processing module respectively;
The second transmitting branch being connected with described antenna and transmitting-receiving processing module respectively;
When described main control module detects and is not connected with height and wakes sensitivity card up, after waking up, control radio-frequency (RF) switch gating the second transmitting branch and send so that the service signal to be sent obtaining from transmitting-receiving processing module is transferred to antenna, and described in gating, the second receiving branch transfers to transmitting-receiving processing module so that the business from antenna reception is received to signal; When described main control module detects and is connected with height and wakes sensitivity card up, after waking up, controlling radio-frequency (RF) switch gating the first transmitting branch wakes sensitivity card up and amplifies processing the service signal to be sent obtaining from transmitting-receiving processing module is transferred to height, and service signal to be sent that amplify to process gained is transferred to described antenna send, and described in gating, the second receiving branch transfers to transmitting-receiving processing module so that the business from antenna reception is received to signal.
9. OBU as claimed in claim 6, is characterized in that, described main control module comprises:
The first control module, for before waking up, control sends to height by the initialize signal from described antenna reception and wakes sensitivity card up, and at described height, wake sensitivity card up initialize signal is extracted to signal to be detected, described signal to be detected is amplified to process and make after its requirement that meets wake-up signal validation checking, when described signal to be detected being detected and be effective wake-up signal, from described height, wake sensitivity clamping up and receive look-at-me;
Wake module, for carrying out wake up process according to described look-at-me;
The second control module, the pad value for receiving signal according to the OBU being intercepted by windshield, is identified for configuring the high amplifying parameters of waking sensitivity card up.
10. OBU as claimed in claim 9, is characterized in that, described OBU also comprises
Memory module, for storing sensitivity gear and amplifying parameters mapping table,
Described the second control module comprises:
Determining unit, for determining sensitivity gear adjusted value according to described pad value;
Search unit, for search the amplifying parameters adjusted value corresponding with sensitivity gear adjusted value from described mapping table;
Dispensing unit, for to search the high sensitivity card that wakes up of amplifying parameters adjusted value configuration described in gained.
11. 1 kinds of OBU assemblies, is characterized in that, comprise that the height as described in any one in claim 1-5 wakes sensitivity card up, and the OBU as described in any one in claim 6-10.
The communication means of 12. 1 kinds of OBU assemblies, is characterized in that, described method, based on OBU assembly as claimed in claim 11, comprising:
Before described OBU wakes up, described height wakes sensitivity card up makes it meet the requirement of wake-up signal validation checking to extracting signal to be detected the initialize signal receiving from OBU and it being amplified to process, described amplification is processed to gained signal to be detected and carry out wake-up signal validation checking, and to OBU, return to look-at-me detecting after described signal to be detected is effective wake-up signal;
Described OBU carries out wake up process according to look-at-me.
13. methods as claimed in claim 12, is characterized in that, described method also comprises:
After described OBU wakes up, described OBU transfers to height by service signal to be sent and wakes sensitivity card up and amplify processing, and the service signal to be sent that gained is processed in the amplification of returning is sent.
14. methods as claimed in claim 12, is characterized in that, described method also comprises:
Described OBU detects and whether is connected with height and wakes sensitivity card up, if so, after described OBU wakes up, service signal to be sent is transferred to height and wake sensitivity card up and amplifies processings, and the service signal to be sent of amplification processing gained is sent; Otherwise, directly service signal to be sent is sent.
15. methods as described in any one in claim 12-14, is characterized in that, when adopting height as claimed in claim 3 to wake sensitivity card up, described method also comprises:
Described OBU obtains the pad value that the OBU being intercepted by windshield receives signal;
The amplifying parameters that described OBU wakes sensitivity card according to pad value up to height is configured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310218877.3A CN104217229B (en) | 2013-06-04 | 2013-06-04 | Height wakes up sensitivity card, OBU, OBU component and communication means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310218877.3A CN104217229B (en) | 2013-06-04 | 2013-06-04 | Height wakes up sensitivity card, OBU, OBU component and communication means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104217229A true CN104217229A (en) | 2014-12-17 |
| CN104217229B CN104217229B (en) | 2017-06-16 |
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