CN104463986A - ESAM control method and device and OBU - Google Patents
ESAM control method and device and OBU Download PDFInfo
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- CN104463986A CN104463986A CN201310439133.4A CN201310439133A CN104463986A CN 104463986 A CN104463986 A CN 104463986A CN 201310439133 A CN201310439133 A CN 201310439133A CN 104463986 A CN104463986 A CN 104463986A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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Abstract
The invention provides an ESAM control method and device and an OBU. The method comprises the steps that an OBU controller sends an initialization instruction to an ESAM in advance; the ESAM sets an initialization flag of its own after receiving the initialization instruction; the ESAM judges whether the initialization flag is valid after being energized, and if the initialization flag is valid, the ESAM completes the initialization process of its own. According to the method, the ESAM is adopted to complete initialization operation of its own, and there is no need to adopt the OBU controller to send a series of initialization instructions to the ESAM to conduct initialization operation on the ESAM; the OBU controller can conduct initialization operation on other electronic devices of its own when the ESAM conducts initialization operation, so the time for initialization operation of the OBU is not occupied, the instruction efficiency of the OBU is improved, and the OBU can adapt to an ETC system with a high requirement for the passing speed.
Description
Technical field
The present invention relates to intelligent transportation field, particularly relate to control method and device, the OBU of a kind of ESAM.
Background technology
Enter 21 century, the continuous fast development of intelligent transportation industry, electric non-stop toll (ElectronicToll Collection, ETC) systematic difference is increasingly extensive, ETC system comprises electronic tag (On BoardUnit, OBU), roadside unit (Road Side Unit, RSU) and driving vehicle.Wherein an electron device of OBU be embedded safe control module (Embedded Secure Access Module, ESAM), ESAM as a secure storage module, be mainly used in storing OBU individual information, as the information such as information of vehicles, transaction record.
In ETC system, OBU is placed in driving vehicle, time vehicle high-speed is by RSU, between the RSU of OBU and roadside erection, adopt microwave communication, and in conjunction with the storage information of ESAM inside, the operation such as rate, deduction toll is calculated to driving vehicle, more than being called for short, is operating as an ETC transaction.After a closing the transaction, in order to save the power consumption of OBU, the OBU controller of OBU inside sends instruction to ESAM, and ESAM is carried out power down process, and then OBU self enters dormant state.
When upper once ETC concludes the business, OBU carries out self waking up again, then ESAM is carried out upper electric treatment, need after OBU wakes up to carry out a series of initialization procedure, initialization procedure comprises: OBU controller sends a series of initialization directive to ESAM and carries out initialization process to ESAM, but the initialization procedure at substantial time of OBU, the instruction inefficiency causing OBU follow-up.In ETC transaction, car speed is very fast, general all at more than 80km/h, because OBU initialization procedure is long, the set-up procedure causing OBU to carry out before normal running (calculating and charging process vehicle) driving vehicle is long, computation rate in ETC system is caused to slow down, when the excessive velocities of driving vehicle, OBU just can not be applicable to ETC system.
Therefore how to improve the instruction efficiency of OBU, enable OBU be suitable for being present urgent problem in the higher ETC system of passage rate requirement.
Summary of the invention
The invention provides control method and device, the OBU of a kind of ESAM, use the method can improve the instruction efficiency of OBU, OBU is suitable for the higher ETC system of passage rate requirement.
To achieve these goals, the present invention adopts following technological means:
A control method of ESAM, comprising:
In this OBU concludes the business, power on after receiving the instruction that powers on of OBU controller;
If deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, arrange after receiving the deinitialization instruction of OBU controller transmission;
After described initialization operation completes, send to described OBU controller and be initialized to function signal;
Interactive operation is carried out with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
Preferably, also comprise after carrying out interactive operation with described OBU controller:
Under the dormancy power consumption of described ESAM is greater than predetermined threshold value situation, after this OBU closing the transaction described, receive the deinitialization instruction that described OBU controller sends;
According to described deinitialization instruction, described deinitialization mark is set;
The cut-offing instruction receiving the transmission of described OBU controller enters off-position.
Preferably, also comprise after described and described OBU controller carries out interactive operation:
Under the dormancy power consumption of described ESAM is greater than predetermined threshold value situation, after this OBU closing the transaction described, the cut-offing instruction receiving the transmission of described OBU controller enters off-position.
Preferably, also comprise after described and described OBU controller carries out interactive operation:
Under the dormancy power consumption of described ESAM is less than predetermined threshold value situation, the dormancy instruction receiving the transmission of described OBU controller enters dormant state.
Preferably, also comprise after the dormancy instruction receiving the transmission of described OBU controller enters dormant state:
In upper once transaction, the instruction that wakes up receiving the transmission of described OBU controller enters wake-up states;
Interactive operation is carried out with described OBU controller.
Preferably, be initialized to function signal to described OBU controller transmission to comprise:
Function signal is initialized to described OBU controller transmission by the first vacant pin of self.
Preferably, receive the dormancy instruction of described OBU controller transmission by the second vacant pin or wake instruction up.
A control device of ESAM, comprising:
Receiving element, in concluding the business at this OBU, powers on after receiving the instruction that powers on of OBU controller;
Initialization unit, if effective for deinitialization mark, completes the initialization operation of self automatically, after described deinitialization is masked as last OBU closing the transaction, arranges after receiving the deinitialization instruction of OBU controller transmission;
Transmitting element, after completing at described initialization operation, sends to described OBU controller and is initialized to function signal;
Interactive unit, for carrying out interactive operation with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
A kind of OBU, comprising: OBU controller and ESAM;
Described OBU controller sends to ESAM the instruction that powers in this OBU concludes the business;
Described ESAM is in this OBU concludes the business, power on after receiving the instruction that powers on of OBU controller, if deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, arrange after receiving the deinitialization instruction of OBU controller transmission, after described initialization operation completes, send to described OBU controller and be initialized to function signal, carry out interactive operation with described OBU controller;
Described OBU controller complete residue control operation after, this OBU closing the transaction described.
Preferably, the structure of described ESAM comprises: the first pin VSS, the second pin DATA, the 3rd pin RST, the 4th pin NC, the 5th pin CLK, the 6th pin IP, the 7th pin W/S, the 8th pin VDD;
Described ESAM is connected with described OBU controller by the second pin DATA, the 6th pin IP, the 7th pin W/S;
Described ESAM is initialized to function signal by the 6th pin IP to described OBU controller transmission.
The invention provides the control method of a kind of ESAM, deinitialization instruction is sent by OBU controller to ESAM in advance in the method, after ESAM receives deinitialization instruction, the deinitialization mark of self is set, after ESAM powers on, judge that whether deinitialization mark is effective, if effectively, self completes initialization procedure.
The present invention adopts ESAM self to complete initialization operation, and OBU controller need not be adopted to send a series of initialization directive to ESAM to ESAM carry out initialization operation, OBU controller can when ESAM self carries out initialization operation, initialization operation is carried out to other electron devices of self, thus do not take the time of OBU initialization operation, save the time of OBU initialization operation, improve the instruction efficiency of OBU, OBU is suitable for the higher ETC system of passage rate requirement.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the pin configuration figure of ESAM in prior art;
The process flow diagram of Fig. 2 control method of ESAM disclosed in the embodiment of the present invention;
The process flow diagram of Fig. 3 control method of another ESAM disclosed in the embodiment of the present invention;
In the control method of Fig. 4 ESAM disclosed in the embodiment of the present invention, ESAM wakes up and the internal logic of dormancy;
The process flow diagram of Fig. 5 control method of another ESAM disclosed in the embodiment of the present invention;
The process flow diagram of Fig. 6 control method of another ESAM disclosed in the embodiment of the present invention;
The pin configuration figure of Fig. 7 another ESAM disclosed in the embodiment of the present invention;
The structural representation of Fig. 8 control device of ESAM disclosed in the embodiment of the present invention;
The structural representation of Fig. 9 control device of another ESAM disclosed in the embodiment of the present invention;
The structural representation of Figure 10 OBU disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Before introducing the present invention, first introduce, ESAM device in the present invention, ESAM is as a secure storage module, for storing OBU individual information, as the information such as information of vehicles, transaction record, be mainly used in carrying out data interaction with OBU controller, for OBU controller provides Data support in ETC transaction.
As shown in Figure 1, the invention provides the structural representation of ESAM pin in prior art.Use pin at present and have 5:
2nd pin: VSS, digitally, for ground connection;
4th pin: DATA, data communication mouth, realizes the two-way communication between ESAM and peripheral hardware, mainly carries out two-way communication with OBU controller in the present invention;
13rd pin: CLK, clock pin, provides clock signal needed for two-way communication for OBU controller to ESAM;
14th pin: RST, resetting pin, carries out hot reset for OBU controller to ESAM.
15th pin: VDD, power supply, for being connected with external power source, for ESAM provides power supply support.
All the other pins NC is vacant pin.
NC pin is vacant pin, not yet names at present, but can use as required in real world applications, uses two vacant pin NC wherein, will be described in detail in subsequent content in the present invention.
As shown in Figure 2, the invention provides the first embodiment of ESAM control method, comprising:
Step S101: in this OBU concludes the business, powers on after receiving the instruction that powers on of OBU controller;
When driving vehicle is at a high speed by starting when RSU once to conclude the business, in this transaction, first self wake up by OBU controller, then by the DATA pin of ESAM, send to ESAM the instruction that powers on, ESAM carries out power on operation to self after receiving the instruction that powers on of OBU controller transmission.
Step S102: if deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, is arranged after receiving the deinitialization instruction of OBU controller transmission;
After upper once closing the transaction before this transaction, if when OBU controller wishes that ESAM powers on next time, self completes initialization operation, then need after closing the transaction, deinitialization instruction is sent to ESAM by DATA pin, deinitialization instruction, as the term suggests the instruction for removing initialization operation, but refers to and the initialization directive of ESAM in OBU is removed.ESAM arranges self deinitialization mark, so that ESAM can identify this mark, after powering on next time, self completes initialization operation according to deinitialization mark after receiving deinitialization instruction.
After ESAM powers on, first judge that whether the deinitialization mark of self is effective, if deinitialization mark is effective, then ESAM completes the initialization operation of self automatically, if initialization flag is invalid, needs the initialization directive waiting for that OBU sends, then carrying out initialization operation according to initialization directive.
Step S103: after described initialization operation completes, sends to described OBU controller and is initialized to function signal;
ESAM is initialized to function signal by the first vacant pin of self to described OBU controller transmission, first vacant pin is any one in the vacant pin of ESAM, concrete, in advance the first I/O port of OBU controller is connected with the vacant pin of ESAM first, after OBU controller powers on to ESAM, in OBU controller, the first I/O port is set to input pattern, an IO pin is set during beginning for high (low) level.
ESAM generates a successful signal of initialization after self completes initialization operation, this signal is low (height) level, ESAM to be sent to the first I/O port of OBU controller by the first vacant pin by being initialized to function signal, because it is different from the pin level of the first I/O port initial setting up to be initialized to function signal, therefore, when OBU controller detects the level generation saltus step of the first I/O port, can learn that ESAM completes initialization operation.
Step S104: carry out interactive operation with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
After what OBU controller received that ESAM sends be initialized to function signal and after self initialization also completes, namely process of exchange is entered, in process of exchange, OBU controller needs to carry out interactive operation with ESAM, mainly OBU controller sends the instruction obtaining information of vehicles to ESAM, after ESAM receives instruction, in self, inquiry obtains information of vehicles needed for OBU controller, and information of vehicles is fed back to OBU controller, OBU controller is after carrying out interactive operation with ESAM, in this transaction, OBU controller just no longer operates ESAM, namely the task of ESAM in this OBU concludes the business terminates.
The invention provides the control method of a kind of ESAM, deinitialization instruction is sent by OBU controller to ESAM in advance in the method, after ESAM receives deinitialization instruction, the deinitialization mark of self is set, after ESAM powers on, judge that whether deinitialization mark is effective, if effectively, self completes initialization procedure.
The present invention adopts ESAM self to complete initialization operation, and OBU controller need not be adopted to send a series of initialization directive to ESAM to ESAM carry out initialization operation, OBU controller can when ESAM self carries out initialization operation, initialization operation is carried out to other electron devices of self, thus do not take the time of OBU initialization operation, save the time of OBU initialization operation, improve the instruction efficiency of OBU, OBU is suitable for the higher ETC system of passage rate requirement.
As shown in Figure 3, the invention provides the second embodiment of the control method of ESAM, comprising:
Step S201:ESAM powers on after receiving the instruction that powers on of OBU controller;
Step S202: if deinitialization mark is effective, automatically complete the initialization operation of self, after deinitialization is masked as last OBU closing the transaction, is arranged after receiving the deinitialization instruction of OBU controller transmission;
Step S203:ESAM, after initialization operation completes, sends to OBU controller and is initialized to function signal;
Step S204:ESAM and OBU controller carry out interactive operation;
Step S205:OBU controller judges whether the power consumption of ESAM is less than predetermined threshold value, if be greater than, enters step S206, if be less than, enters step S207;
Generally, in order to reduce the power consumption of OBU, after closing the transaction, need ESAM to carry out power down process, but through verification experimental verification, after ESAM enters dormant state, the dormancy power consumption of some ESAM can be very little, now directly ESAM can be entered dormant state, so in transaction next time, OBU controller only needs to wake up ESAM, does not need to carry out initialization to it, also significantly reduces the initialization time of OBU; If but after ESAM enters dormant state, the power consumption of self is still very large, then need ESAM to carry out power down process.The size of ESAM dormancy power consumption, be boundary with predetermined threshold value in the present invention, be greater than predetermined threshold value, then think that the dormancy power consumption of ESAM is excessive, be less than predetermined threshold value, then think that the dormancy power consumption size of ESAM can accept, can dormant state be entered, through experimental verification, in the present invention, adopt 2uA as predetermined threshold value.
OBU controller judges according to the dormancy power consumption of ESAM, if ESAM dormancy power consumption is greater than 2uA, then enters step S206, if ESAM dormancy power consumption is less than 2uA, then enters step S207.
Step S206: after treating this OBU closing the transaction, reset deinitialization mark, the cut-offing instruction receiving the transmission of OBU controller enters off-position.
After treating that OBU controller completes residue control operation, this OBU closing the transaction, after this closing the transaction, receives the deinitialization instruction that OBU controller sends, arrange deinitialization mark according to deinitialization instruction, the cut-offing instruction then receiving the transmission of OBU controller enters off-position.
This step is after ESAM completes and carries out interactive operation with OBU controller, when the power consumption of ESAM is larger, in order to reduce the power consumption of ESAM, ESAM is needed to carry out power down process, but after each closing the transaction, ESAM needs to reset initialization flag, during for initially powering on next time, easily ESAM complete initialization behaviour prepare.
Under the dormancy power consumption of ESAM is greater than predetermined threshold value situation, after this OBU closing the transaction, the cut-offing instruction that ESAM can receive the transmission of described OBU controller enters off-position.The difference of the method and step S206 is after closing the transaction, do not receive deinitialization instruction and deinitialization mark is set, therefore upper once ESAM powers on time, ESAM can only be suitable for OBU send instruction carry out initialized process, directly self can not complete initialization operation.
Step S207: under the dormancy power consumption of ESAM is less than predetermined threshold value situation, the dormancy instruction receiving the transmission of described OBU controller enters dormant state.
When the dormancy power consumption of ESAM is less than 2uA, OBU sends dormancy instruction to ESAM, and ESAM enters dormant state after receiving dormancy instruction.After OBU controller completes residue control operation, this OBU closing the transaction, in upper once transaction, the instruction that wakes up that ESAM directly receives the transmission of OBU controller enters wake-up states, direct and OBU controller carries out interactive operation, and initialization operation need not be carried out, thus reduce the initialization time of OBU.
In the present invention, ESAM receives the dormancy instruction of OBU controller transmission by the second vacant pin or wakes instruction up, second vacant pin is remove any one outside the first vacant pin in the vacant pin of ESAM, concrete, in advance the second I/O port of OBU controller is connected with the vacant pin of ESAM second.After OBU controller powers on to ESAM, in OBU controller, the first I/O port is set to output mode, second vacant pin is set to input pattern by ESAM, if OBU controller needs wake up or dormancy ESAM just needs transmission to wake instruction or the vacant pin of dormancy instruction to the second up, now can there is saltus step in the second vacant pin.
Whether send wake instruction or dormancy instruction up to detect OBU, ESAM opens interrupters detects, as shown in Figure 4, left side is the internal logic that ESAM inside is waken up, and right side is the internal logic of ESAM internal dormancy, in the diagram in left side, after saltus step occurs the rising edge (negative edge) of detection second vacant pin, if ESAM itself is in wake-up states, then ESAM is entered dormant state, switch the down trigger direction of the second vacant pin simultaneously, wake instruction up to receive.In the diagram on right side, after saltus step occurs the negative edge (rising edge) of the second vacant pin, if ESAM itself is in dormant state, then ESAM is entered wake-up states, again switch the down trigger direction of the second vacant pin, to receive dormancy instruction simultaneously.
The second I/O port control ESAM by OBU controller in the present embodiment enters dormancy or wake-up states, simplicity of design, risk is extremely low, distinguish ESAM by the down trigger mode (rising edge or negative edge) configuring I/O port and enter that pattern,, there is not the risk in certification in simplicity of design and compatible existing ISO7816 standard.If the power consumption after ESAM dormancy can control at <2uA, then OBU does not need after having concluded the business to carry out power down process to ESAM at every turn, ESAM can be waken up when OBU is waken up again simultaneously, greatly accelerate the internal initialization process of ESAM, shorten overall exchange hour.
In addition in the present embodiment ESAM complete with the interactive operation of OBU controller after, just dormant state is entered, instead of it is always in running order, until OBU closing the transaction, ESAM is being carried out to carry out dormant state, can reduce ESAM like this completing interactive operation and OBU concludes the business the power consumption between not terminating, and while reducing OBU initialization time, also reduces the power consumption of OBU.
Above embodiment is all the method for ESAM end performs, and introduces the method that OBU controller end performs below, as shown in Figure 5, present invention also offers the 3rd embodiment of the control method of a kind of ESAM, comprising:
Step S301: in this OBU concludes the business, sends to ESAM the instruction that powers on;
In this OBU concludes the business, OBU controller sends to ESAM the instruction that powers on, and OBU controller after waking up, just sends to ESAM the instruction that powers on, ESAM is powered on.
Step S302: receive at ESAM the instruction that powers on and carry out powering on and after completing initialization operation, what receive that described ESAM sends is initialized to function signal;
ESAM receives and powers on after instruction powers on, judge that whether the deinitialization mark of therein is effective, if effectively, automatically complete the initialization operation of self, and after completing initialization operation, send to OBU controller and be initialized to function signal, what OBU controller reception ESAM sent is initialized to function signal.
Step S303: carry out interactive operation with described ESAM, after completing residue control operation, this OBU closing the transaction described.
Complete in initialized process at ESAM, other equipment of OBU are also carried out initialization by OBU controller, after all initialization completes all electronic equipments of OBU, OBU and ESAM carries out interactive operation, after completing interactive operation, OBU controller just no longer operates ESAM, and OBU controller is after completing residue control operation, this OBU terminates, and OBU controller enters dormant state.
As shown in Figure 6, the invention provides the 4th embodiment of the control method of ESAM, comprising:
Step S401: after upper once closing the transaction, OBU controller sends deinitialization instruction to ESAM;
Step S402:ESAM arranges self deinitialization mark after receiving deinitialization instruction;
Step S403:OBU controller sends cut-offing instruction to ESAM;
Step S404:ESAM carries out power down process after receiving cut-offing instruction;
Step S405: in this transaction, OBU controller sends to ESAM the instruction that powers on;
Step S406:ESAM powers on after receiving the instruction that powers on of OBU controller;
Step S407:ESAM judges that whether deinitialization mark is effective, if effectively, enter step S308; If invalid, enter step S409.
Step S408:ESAM self completes initialization operation, then sends to OBU controller and is initialized to function signal, jump to step S410.
Step S409: wait for that OBU sends instruction and completes initialization operation.
Step S410:ESAM and described OBU controller carry out interactive operation;
After step S411:OBU controller completes residue control operation, this OBU closing the transaction described.
As shown in Figure 1, the a lot of vacant pin of existence of existing ESAM, this have impact on the miniaturization of ESAM, also have impact on the miniaturization of OBU, therefore while meeting ESAM function simultaneously, the invention provides the structure of a kind of novel ESAM, delete most vacant pin, optimize the pin layout of ESAM inside simultaneously, realize the small-sized encapsulated of ESAM, as shown in Figure 7, embodiments provide the ESAM after optimization and encapsulate schematic diagram.
Each pin function is described below:
1st pin VSS: digitally;
2nd pin DATA, data communication mouth, realizes the two-way communication between ESAM and peripheral hardware;
3rd pin RST: resetting pin, carries out hot reset for peripheral hardware to ESAM;
4th pin NC: for subsequent use;
5th pin CLK: clock pin, provides clock signal needed for two-way communication for peripheral hardware to ESAM;
6th pin IP: signal designation pin, indicator signal is provided to peripheral hardware after completing internal initialization for ESAM, its effect is identical with the above mention first vacant pin, only gives concrete title herein, the description of the relevant first vacant pin during its function is as detailed above.
7th pin W/S: the enable pin of wake/sleep, to send to ESAM for peripheral hardware and wake up or sleep signal, its effect is identical with the above mention second vacant pin, only gives concrete title herein, the description of the relevant second vacant pin during its function is as detailed above.
8th pin VDD: power supply.
As shown in Figure 8, present invention also offers the control device of a kind of ESAM, comprising:
Receiving element 100, in concluding the business at this OBU, powers on after receiving the instruction that powers on of OBU controller;
Initialization unit 200, if effective for deinitialization mark, completes the initialization operation of self automatically, after described deinitialization is masked as last OBU closing the transaction, arranges after receiving the deinitialization instruction of OBU controller transmission;
Transmitting element 300, after completing at described initialization operation, sends to described OBU controller and is initialized to function signal;
Interactive unit 400, for carrying out interactive operation with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
As shown in Figure 9, present invention also offers the control device of a kind of ESAM, comprising:
Second transmitting element 500, in concluding the business at this OBU, sends to ESAM the instruction that powers on;
Second receiving element 600, carries out powering on and after completing initialization operation for receiving the instruction that powers at ESAM, and what receive that described ESAM sends is initialized to function signal;
Second interactive unit 700, for carrying out interactive operation with described ESAM, after completing residue control operation, this OBU closing the transaction described.
As shown in Figure 10, present invention also offers a kind of OBU, comprising: OBU controller 800 and ESAM900;
Described OBU controller 800 sends to ESAM the instruction that powers in this OBU concludes the business;
Described ESAM900 is in this OBU concludes the business, power on after receiving the instruction that powers on of OBU controller, if deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, arrange after receiving the deinitialization instruction of OBU controller transmission, after described initialization operation completes, send to described OBU controller and be initialized to function signal, carry out interactive operation with described OBU controller;
Described OBU controller 800 complete residue control operation after, this OBU closing the transaction described.
In this OBU, the structure of ESAM can be structure as shown in Figure 1, and described ESAM controls pin by DATA pin, the first vacant pin and second and is connected with OBU controller, and under the support of three pins, realize the data interaction between ESAM and OBU controller.
In this OBU, the structure of ESAM also can be structure as shown in Figure 7, comprise: the first pin VSS, second pin DATA, 3rd pin RST, 4th pin NC, 5th pin CLK, 6th pin IP, 7th pin W/S, 8th pin VDD, described ESAM is connected with described OBU controller by the second pin DATA, the 6th pin IP, the 7th pin W/S, and described ESAM is initialized to function signal by the 6th pin IP to described OBU controller transmission, receives the dormancy instruction of described OBU controller transmission or wake instruction up by the 7th pin W/S.
If the function described in the present embodiment method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computing equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present invention contributes to prior art or this technical scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a computing equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. various can be program code stored medium.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a control method of ESAM, is characterized in that, comprising:
In this OBU concludes the business, power on after receiving the instruction that powers on of OBU controller;
If deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, arrange after receiving the deinitialization instruction of OBU controller transmission;
After described initialization operation completes, send to described OBU controller and be initialized to function signal;
Interactive operation is carried out with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
2. the method for claim 1, is characterized in that, also comprises after carrying out interactive operation with described OBU controller:
Under the dormancy power consumption of described ESAM is greater than predetermined threshold value situation, after this OBU closing the transaction described, receive the deinitialization instruction that described OBU controller sends;
According to described deinitialization instruction, described deinitialization mark is set;
The cut-offing instruction receiving the transmission of described OBU controller enters off-position.
3. the method for claim 1, is characterized in that, also comprises after described and described OBU controller carries out interactive operation:
Under the dormancy power consumption of described ESAM is greater than predetermined threshold value situation, after this OBU closing the transaction described, the cut-offing instruction receiving the transmission of described OBU controller enters off-position.
4. the method for claim 1, is characterized in that, also comprises after described and described OBU controller carries out interactive operation:
Under the dormancy power consumption of described ESAM is less than predetermined threshold value situation, the dormancy instruction receiving the transmission of described OBU controller enters dormant state.
5. method as claimed in claim 4, is characterized in that, also comprises after the dormancy instruction receiving the transmission of described OBU controller enters dormant state:
In upper once transaction, the instruction that wakes up receiving the transmission of described OBU controller enters wake-up states;
Interactive operation is carried out with described OBU controller.
6. the method for claim 1, is characterized in that, is initialized to function signal comprises to described OBU controller transmission:
Function signal is initialized to described OBU controller transmission by the first vacant pin of self.
7. method as claimed in claim 5, is characterized in that, receives the dormancy instruction of described OBU controller transmission or wake instruction up by the second vacant pin.
8. a control device of ESAM, is characterized in that, comprising:
Receiving element, in concluding the business at this OBU, powers on after receiving the instruction that powers on of OBU controller;
Initialization unit, if effective for deinitialization mark, completes the initialization operation of self automatically, after described deinitialization is masked as last OBU closing the transaction, arranges after receiving the deinitialization instruction of OBU controller transmission;
Transmitting element, after completing at described initialization operation, sends to described OBU controller and is initialized to function signal;
Interactive unit, for carrying out interactive operation with described OBU controller, after described OBU controller completes residue control operation, this OBU closing the transaction described.
9. an OBU, is characterized in that, comprising: OBU controller and ESAM;
Described OBU controller sends to ESAM the instruction that powers in this OBU concludes the business;
Described ESAM is in this OBU concludes the business, power on after receiving the instruction that powers on of OBU controller, if deinitialization mark is effective, automatically complete the initialization operation of self, after described deinitialization is masked as last OBU closing the transaction, arrange after receiving the deinitialization instruction of OBU controller transmission, after described initialization operation completes, send to described OBU controller and be initialized to function signal, carry out interactive operation with described OBU controller;
Described OBU controller complete residue control operation after, this OBU closing the transaction described.
10. OBU as claimed in claim 9, it is characterized in that, the structure of described ESAM comprises: the first pin VSS, the second pin DATA, the 3rd pin RST, the 4th pin NC, the 5th pin CLK, the 6th pin IP, the 7th pin W/S, the 8th pin VDD;
Described ESAM is connected with described OBU controller by the second pin DATA, the 6th pin IP, the 7th pin W/S;
Described ESAM is initialized to function signal by the 6th pin IP to described OBU controller transmission.
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| CN104463986B (en) | 2017-01-25 |
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