CN103707845A - Control method of long-distance driving limit - Google Patents
Control method of long-distance driving limit Download PDFInfo
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- CN103707845A CN103707845A CN201210378235.5A CN201210378235A CN103707845A CN 103707845 A CN103707845 A CN 103707845A CN 201210378235 A CN201210378235 A CN 201210378235A CN 103707845 A CN103707845 A CN 103707845A
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Abstract
The invention provides a control method of a long-distance driving limit. The control method includes allocating data to an engine system and storing allocated data via the control method of the long-distance driving limit; comparing and judging by the engine system according to control data sent by the control method of the long-distance driving limit and stored allocated data when the control method of the long-distance driving limit dose not receive control orders to ensure whether to enter driving limit state or not; stopping sending control data by the control method of the long-distance driving limit after the control method of the long-distance driving limit receives driving limit order, if the engine system does not receive control data sent by the control method of the long-distance driving limit in a preset time, then entering the driving limit state; sending data recovery order to the engine system when the control method of the long-distance driving limit receives the data recovery order, and eliminating allocated data by the engin system. The control method of the long-distance driving limit solves the problem that since the control method of the long-distance driving limit is dismounted and damaged, so that the driving limit function is disabled.
Description
Technical field
The present invention relates to the management control technique field of vehicle, particularly relate to a kind of control method of long-range march restriction.
Background technology
In recent years, long-range march limitation function is used to more and more widely the repaying management of vehicle and controls, particularly on very worthy commercial vehicle/comm..vehicle repaying management link, depot, vehicle dealer, for loan on guarantee client can hand in the monthly required fund of paying up according to appointment completely, have all opened long-range restriction driving function to the vehicle of paying.This function is based on 2G/3G cordless communication network, and by controlling a Vehicle Controller, to engine system, output limits.
At present, be applied to the long-range march restriction controller on commercial vehicle, substantially have two classes:
The first kind is at SAEJ1939(Serial Control communication automotive networking) defined moment of torsion/speed controlling function module reality.Engine system is that moment of torsion/speed controlling function module has been reserved 8 TSC1 message passages, when engine system is periodically received speed restriction/torque limited message that long-range march restriction controller sends, the restriction output of engine system response moment of torsion/rotating speed; In addition, after long-range march restriction controller is removed, engine system is controlled TSC1 message because can not receive moment of torsion/speed, has responded a default fault handling pattern, and moment of torsion/rotating speed output of engine system is restricted.
Because SAEJ1939 is international standard, its defined content is completely open, once repaying user or vehicle refitting personnel have understood after the real mode of this driving restriction, the controller that just easily utilizes any one to have CAN transceiver module has substituted long-range march restriction controller, according to the defined message format of J1939, periodically to engine system, send the TSC1 message without the restriction of moment of torsion/rotating speed, thereby the limitation function that causes driving a vehicle lost efficacy.
Equations of The Second Kind is the TSC1 message form with reference to SAEJ1939, and the mode of a self-defined message periodically sends driving limiting command to engine system.Which privacy degrees is slightly higher than the first kind, but is also easily cracked.Under the state that repacking personnel only need to not open at driving limitation function, recorded the message without the restriction of moment of torsion/rotating speed that engine system receives, then the controller that utilizes any one to have CAN transceiver module has substituted long-range march restriction controller and has carried out periodically the transmission without the message of moment of torsion/rotating speed restriction, thus the inefficacy of the limitation function that causes driving a vehicle.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of control method of long-range march restriction, for solving the control method of the prior art medium-long range driving restriction problem that limitation function lost efficacy that easily causes driving a vehicle.
For achieving the above object and other relevant objects, the invention provides a kind of control method of long-range march restriction, in the process that is applied to by vehicle background management system, vehicle be controlled, the engine system that described vehicle has long-range march restriction controller and controlled by this long-range march restriction controller, described long-range march restriction controller is connected with vehicle background management system by wireless network, and described control method at least comprises the following steps:
S1, carries out data configuration by long-range march restriction controller to engine system, and makes the data of engine system stored configuration; The data of described configuration at least comprise controller sequence number;
S2, after completing above-mentioned data configuration, vehicle background management system is realized the driving restriction of vehicle is controlled by long-range march restriction controller, specifically comprises the following steps:
S21, long-range march restriction controller judges whether to receive the control command that vehicle background management system sends; If do not receive, execution step S22, if receive, execution step S23;
S22, after the surge time once powering on vehicle, long-range march restriction controller sends and controls data to engine system, and engine system contrasts judgement according to the data of the configuration of these control data and storage, determine whether to enter driving restriction state, finish this driving restriction and control;
S23, judges whether this control command is driving restriction instruction, if so, performs step S24, if not, and execution step S25;
S24, after the surge time once powering on vehicle, long-range march restriction controller stops sending and controlling data to engine system, engine system is not received the control data that long-range march restriction controller sends in Preset Time, enter driving restriction state, finish this driving restriction and control;
S25, judges whether this control command is that data are recovered instruction, if so, performs step S26, if not, and execution step S22;
S26, after the surge time once powering on, sends data by long-range march restriction controller to engine system and recovers instruction on vehicle, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
Alternatively, step S1 specifically comprises the following steps:
S11, vehicle background management system sends configuration-direct to long-range march restriction controller;
S12, long-range march restriction controller, after upper surge time after once powering on, sent configuring request information to engine system;
S13, engine system, after receiving this solicited message, generates a random cipher to long-range march restriction controller;
S14, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S15, engine system judges this check code; If check code is correct, the data that configure from the reception of long-range march restriction controller the data of storing this configuration; If check code mistake, to an error indication signal of long-range march restriction controller feedback.
Alternatively, in step S12, described surge time is 80ms ~ 110ms.
Alternatively, the execution time of step S22 is limited in 500ms; While exceeding 500ms, engine system enters driving restriction state, finishes this driving restriction and controls.
Alternatively, step S22 specifically comprises the following steps:
S221, after the surge time once powering on vehicle, long-range march restriction controller sends driving driving instruction and controller sequence number to engine system;
S222, engine system judges that whether inner with being stored in it this controller sequence number controller sequence number be consistent; If inconsistent, execution step S223, if consistent, performs step S224;
S223, engine system enters driving restriction state, finishes this driving restriction and controls;
S224, sends random cipher to long-range march restriction controller;
S225, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S226, engine system judges this check code; If check code mistake, execution step S223, if check code is correct, execution step S227;
S227, engine system responds the driving driving instruction receiving, and engine system normally starts operation, finishes this driving restriction and controls.
Alternatively, in step S221, described surge time is 80ms ~ 110ms.
Alternatively, in step S24, described Preset Time is 350ms ~ 500ms.
Alternatively, step S26 specifically comprises the following steps:
S261, after the surge time once powering on vehicle, long-range march restriction controller sends these data to engine system and recovers instruction and controller sequence number;
S262, engine system judges that whether this controller sequence number controller sequence number inner with being stored in it be consistent; If inconsistent, execution step S263, if consistent, performs step S264;
S263, engine system enters driving restriction state, finishes this driving restriction and controls;
S264, sends random cipher to long-range march restriction controller;
S265, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S266, engine system judges this check code; If check code mistake, execution step S263, if check code is correct, execution step S267;
S267, engine system is removed the data of the configuration of storage inside, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
Alternatively, in step S261, described surge time is 80ms ~ 110ms.
Alternatively, in step S266, if check code mistake also comprises: step S268, engine system is simultaneously also to an error indication signal of long-range march restriction controller feedback.
As mentioned above, the control method of a kind of long-range march restriction of the present invention, has following beneficial effect:
1, the present invention can refund above the vehicle of supervising for any needs, when user's refund is in arrears with to some extent, or when refusal is refunded, utilize vehicle background management system, by the long-range march restriction controller in vehicle, the output of engine system is limited, reach the object of restriction Vehicle Driving Cycle.
2, the present invention takes when mutual the mode of checking to complete the coupling of engine system and long-range march restriction controller by pre-configured data and paired domination number, the output of control engine system, solved in prior art, need expert engineer to be equipped with professional calibration tool, the problem of mating between the two.
3, engine system at every turn before startup in, once not receive the control data (order of restriction rotating speed/moment of torsion) of long-range march restriction controller, engine system just can be advanced into driving restriction state certainly, the invention solves long-range march restriction controller split, destroy and problem that the limitation function that causes driving a vehicle lost efficacy.
4, the present invention utilizes engine system first to confirm the controller sequence number of long-range march restriction controller, regeneration random cipher, finally confirm that according to random cipher the reciprocal process of the check code of generation can effectively solve long-range march restriction controller by various forms of controller substitution problem.
5, the present invention utilizes the surge time that engine system powers on to before starting at every turn, completes when time setting of driving limitation function, avoids, in driving process, carrying out speed limit setting, guarantees traffic safety.
6,, in the present invention, each vehicle, when starting, utilizes long-range march restriction controller to control data to engine system one-time write, has reduced to the full extent to control the decrypted possibility of data.
7, in the present invention, client repaying complete or the vehicle lost found after, vehicle background management system can the driving restriction of long-range releasing to vehicle, recovers the Default Value of engine system, when needed, can also recycle long-range march restriction controller.
8, the present invention simultaneously is also applicable to all vehicles, after vehicle is stolen, by vehicle background management system, the output of the engine system in Long-distance Control vehicle is limited, and makes vehicle enter driving restriction state.
Accompanying drawing explanation
Fig. 1 is shown as the overall flow figure of the control method of a kind of long-range march restriction of the present invention.
Fig. 2 is shown as the particular flow sheet of step S1 in the control method of a kind of long-range march restriction of the present invention.
Fig. 3 is shown as the particular flow sheet of step S22 in the control method of a kind of long-range march restriction of the present invention.
Fig. 4 is shown as the particular flow sheet of step S26 in the control method of a kind of long-range march restriction of the present invention.
The specific embodiment
Below, by specific instantiation explanation embodiments of the present invention, those skilled in the art can understand other advantages of the present invention and effect easily by the disclosed content of this specification sheets.The present invention can also be implemented or be applied by the other different specific embodiment, and the every details in this specification sheets also can be based on different viewpoints and application, carries out various modifications or change not deviating under spirit of the present invention.
The invention provides a kind of control method of long-range march restriction, in the process that is applied to by vehicle background management system, vehicle be controlled, the engine system that described vehicle has long-range march restriction controller and controlled by this long-range march restriction controller, the prior engine system of long-range march restriction controller is carried out Data Matching, vehicle background management system passes through to long-range march restriction controller sending controling instruction, long-range march restriction controller is after upper surge time after once powering on, engine system in vehicle is carried out to corresponding control command, the control of realization to the driving of vehicle, simultaneously when long-range march restriction controller is not received the control command of vehicle background management system, long-range march restriction controller is after upper surge time after once powering on, from trend engine system, send and control data, prevent that this long-range march restriction controller is removed or is replaced by other controller.
Vehicle background management system is realized the centralized and unified management to vehicle, and operated by rotary motion in parking lot or vehicle dealer place, is namely sold car side.If the client of buying car is when buying car, what take is the serial mode buying car of loan, producer or dealer can hand in the monthly required fund of paying up completely according to appointment for loan on guarantee client, by this vehicle background management system, vehicle is supervised, when user's refund is in arrears with to some extent, or refusal is when refund, and utilizes vehicle background management system, output to the engine system in Long-distance Control vehicle limits, and reaches the object of restriction Vehicle Driving Cycle.The present invention is also applicable to all vehicles, after vehicle is stolen, by vehicle background management system, the output of the engine system in Long-distance Control vehicle is limited, and makes vehicle enter driving restriction state.To elaborate controlling party ratio juris and the embodiment of a kind of long-range march restriction of the present invention below, make those skilled in the art not need creative work can understand the control method of a kind of long-range march restriction of the present invention.
Refer to Fig. 1, be shown as the overall flow figure of the control method of a kind of long-range march restriction of the present invention.As shown in Figure 1, control method of the present invention comprises the following steps:
Step S1, carries out data configuration by long-range march restriction controller to engine system, and makes the data of engine system stored configuration; The data of described configuration comprise that controller sequence number, ways to restrain and restriction enable.
Step S2, after completing above-mentioned data configuration, vehicle background management system is realized the driving restriction of vehicle is controlled by long-range march restriction controller, comprises the following steps.
Step S21, long-range march restriction controller judges whether to receive the control command that vehicle background management system sends; If do not receive, execution step S22, if receive, execution step S23.
Step S22, after the surge time once powering on vehicle, long-range march restriction controller sends and controls data to engine system, engine system contrasts judgement according to the data of the configuration of these control data and storage, determine whether to enter driving restriction state, finish this driving restriction and control.
Step S23, judges whether this control command is driving restriction instruction, if so, performs step S24, if not, and execution step S25.
Step S24, after the surge time once powering on vehicle, long-range march restriction controller stops sending and controlling data to engine system, engine system is not received the control data that long-range march restriction controller sends in Preset Time, enter driving restriction state, finish this driving restriction and control.
Step S25, judges whether this control command is that data are recovered instruction, if so, performs step S26, if not, and execution step S22.
Step S26, after the surge time once powering on, sends data by long-range march restriction controller to engine system and recovers instruction on vehicle, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
In detail step S1 and step S2 are described below.
Refer to Fig. 2, be shown as the particular flow sheet of step S1 in the control method of a kind of long-range march restriction of the present invention.As shown in Figure 2, described step S1 specifically comprises:
Step S11, vehicle background management system sends configuration-direct to long-range march restriction controller.Long-range march restriction controller internal configurations has the wireless communication module that can receive wireless signal, by this wireless communication module, long-range march restriction controller can carry out radio communication with vehicle background management system, receives vehicle background management system to the configuration-direct of its transmission.
The present invention is by pre-configured data, data paired domination number by configuration completes the coupling of engine system and long-range march restriction controller according to the mode of checking, open the operation of driving limitation function, solved in prior art, need expert engineer to be equipped with professional calibration tool, the problem of mating between the two.
Step S12, long-range march restriction controller, after upper surge time after once powering on, according to the configuration-direct receiving, sent configuring request information to engine system; In step S12, described surge time can specifically arrange, but reserves enough cache-times after should be the powering on of long-range march restriction controller, simultaneously for not affecting the toggle speed of vehicle, after long-range march restriction controller powers on, the time of delay is unsuitable oversize, is generally 80ms ~ 110ms.Particularly, in the present embodiment, long-range march restriction controller, after upper 100ms after once powering on, sends configuring request information to engine system.
Step S13, engine system, after receiving this solicited message, generates a random cipher to long-range march restriction controller; Random cipher can produce in several ways, and engine system adopts aes algorithm or Las Vegas algorithm to generate random cipher in the present invention.
Step S14, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system.
Step S15, engine system judges this check code; If check code is correct, perform step S16, the data that configure from the reception of long-range march restriction controller the data of storing this configuration.Particularly, in the present invention, the data of configuration comprise that controller sequence number, ways to restrain and restriction enable etc., its middle controller sequence number, for the identification of engine system to long-range march restriction controller, judges whether in Preset Time after ways to restrain is included in and powers on that the control data that receive correct long-range march restriction controller transmission determine whether the output that stops immediately engine system output or stop engine system in rear a period of time of engine system startup again, the output that restriction enables whether to stop for execution engine system.
In the present embodiment, employing judges whether in surge time that after powering on the control data that receive correct long-range march restriction controller transmission determine whether to stop immediately engine system output, such advantage is, can avoid carrying out speed limit setting in driving process, guarantees traffic safety.
Meanwhile, in step S15, if check code mistake also performs step S17, to an error indication signal of long-range march restriction controller feedback.According to error indication signal, long-range march restriction controller just knows that the data of this configuration are unsuccessful.Long-range march restriction controller, after upper surge time after once powering on, just can send configuring request information to engine system, again until be the data that engine system successfully configures.Data paired domination number by configuration completes the coupling of engine system and long-range march restriction controller according to the mode of checking, open the operation of driving limitation function, solved in prior art, needed expert engineer to be equipped with professional calibration tool, the problem of mating between the two.
After long-range march restriction controller is the data that successfully configure of engine system, then perform step S2, by long-range march restriction controller, the output of engine system is controlled, carry out the driving limitation function to vehicle.
Step S2 refunds or when vehicle is stolen automobile purchaser, a kind of supervision to vehicle, by vehicle background management system, to long-range march restriction controller, send driving restriction instruction, the long-range march restriction controller control engine system making cannot be exported, and reaches the object of restriction Vehicle Driving Cycle.As shown in Figure 1, described step S2 specifically comprises:
Step S21, long-range march restriction controller judges whether to receive the control command that vehicle background management system sends; Long-range march restriction controller should judge whether to receive the control command that vehicle background management system sends.After the surge time at every turn powering at vehicle like this, long-range march restriction controller could be carried out this control command.The random time that long-range march restriction controller receives and judgement control command can be when normal vehicle operation, that is to say that long-range march restriction controller is not to carry out immediately after receiving control command, but just can carry out after surge time after upper once vehicle powers on, so just guaranteed the safety of Vehicle Driving Cycle.
In step S21, if long-range march restriction controller is not received the control command that vehicle background management system sends, then perform step S22, if receive the control command that vehicle background management system sends, then perform step S23.
Step S22, long-range march restriction controller is not received the control command that vehicle background management system sends, now, long-range march restriction controller should by with the interactively checking of engine system, guarantee that long-range march restriction controller is not substituted by other various forms of controller.In step S22, after the surge time once powering on vehicle, long-range march restriction controller sends and controls data to engine system, engine system contrasts judgement according to the data of the configuration of these control data and storage, determine whether to enter driving restriction state, finish this driving restriction and control.
Refer to Fig. 3, be shown as the particular flow sheet of step S22 in the control method of a kind of long-range march restriction of the present invention.As shown in Figure 3, described step S22 specifically comprises:
Step S221, when long-range march restriction controller does not receive this control command, after the surge time once powering on vehicle, long-range march restriction controller sends driving driving instruction and controller sequence number to engine system.
In step S221, described surge time can specifically arrange, but reserve enough cache-times after should be the powering on of long-range march restriction controller, simultaneously for not affecting the toggle speed of vehicle, after long-range march restriction controller powers on, the time of delaying is unsuitable oversize, is generally 80ms ~ 110ms.Particularly, in the present embodiment, long-range march restriction controller is after upper 100ms after once powering on, and long-range march restriction controller sends driving driving instruction and controller sequence number to engine system; Then perform step S222.
Step S222, engine system judges that whether inner with being stored in it this controller sequence number controller sequence number be consistent, has verified whether the controller that it is implemented to control is it to be carried out to the long-range march restriction controller of data configuration; If inconsistent, execution step S223, if consistent, performs step S224.
Step S223, engine system enters driving restriction state, finishes this driving restriction and controls.
Step S224, in the situation that engine system judges that this controller sequence number controller sequence number inner with being stored in it is consistent, sends random cipher to long-range march restriction controller; Random cipher can produce in several ways, and in the present invention, engine system adopts aes algorithm or Las Vegas algorithm to generate random cipher, then performs step S225.
Step S225, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system; Then perform step S226.
Step S226, whether engine system, after receiving this identifying code, correctly judges this check code; If check code mistake, return to execution step S223, if check code mistake illustrate that what send to drive a vehicle driving instruction to engine system may not be the driving restriction controller in former vehicle, there is the possibility being replaced in former driving restriction controller, now engine system enters driving restriction state; Finishing this driving restriction controls.If check code is correct, then perform step S227.
Step S227, if check code is correct, engine system responds the driving driving instruction receiving: engine system normally starts operation work.
The present invention utilizes engine system first to confirm the sequence number of long-range march restriction controller, regeneration random cipher, finally confirm that according to random cipher the reciprocal process of the check code of generation can effectively solve long-range march restriction controller by the alternative problem of various forms of controllers.
In addition, each vehicle, when starting, utilizes long-range march restriction controller to control data to engine system one-time write, has reduced to the full extent to control the decrypted possibility of data.
Meanwhile, it should be noted that the execution time of whole step S22 should be controlled in 500ms in the present invention, while exceeding 500ms, engine system enters driving restriction state.
S22 is corresponding with step, if long-range march restriction controller is received the control command that vehicle background management system sends, now, execution step S23.
Step S23, long-range march restriction controller receives this control command.Generally, if user provides a loan, the refund of buying car is in arrears with, refuses to refund to some extent, vehicle is stolen or need to remove when the driving restriction of vehicle is controlled, vehicle background management system is just understood sending controling instruction, so when long-range march restriction controller receives this control command, because this control command may be that data are recovered instruction or other instruction, it might not be driving restriction instruction.Tackle this control command and further judge, only, after the driving restriction instruction that receives the transmission of vehicle background management system, just can control the output of engine system, make engine system enter driving restriction state, limit travelling of vehicle.After the judgement of long-range march restriction controller receives this control command, tackle this control command and further judge, with driving that clearly whether this control command allows its execution limit the function of Vehicle Driving Cycle, limit instruction.If so, perform step S24, if not, execution step S25;
Step S24, long-range march restriction controller is after confirming to receive the driving restriction instruction of background management system transmission, after once powering on vehicle, long-range march restriction controller stops sending and controlling data to engine system, engine system is not received the control data that long-range march restriction controller sends in Preset Time, enter driving restriction state, finish this driving restriction and control.
Preset Time in step S24 can specifically arrange, but reserves enough cache-times after should be the powering on of long-range march restriction controller, and for not affecting the run up time of vehicle, general Preset Time is 350ms ~ 500ms simultaneously.Particularly, in the present embodiment, described Preset Time is 500ms, and engine system is not received the control data that long-range march restriction controller sends in 500ms, enters driving restriction state.
It should be noted that in addition, engine system in Preset Time, do not receive the reason of the control data that long-range march restriction controller sends may be also this long-range march restriction controller split except.No matter be which kind of situation, engine system as long as do not receive the control data that long-range march restriction controller sends in Preset Time, just can enter driving restriction state, by such setting, reach the object that prevents that long-range march restriction controller is removed and destroys.
Client completes or after vehicle gives back after stolen, vehicle background management system should be removed the driving limitation function to vehicle, recovers the Default Value of engine system in repaying.So when needs releasing is controlled the driving restriction of vehicle, vehicle background management system also can send data to long-range march restriction controller and recover instruction, so that the clear data of configuration before of long-range march restriction controller control engine system, original configuration when recovery is dispatched from the factory, so S24 is corresponding with step, when judgement control command is not driving restriction instruction, should perform step S25.
Step S25, if this control command is not driving restriction instruction, should further judge whether this control command is that data are recovered instruction so; If so, perform step S26, if not, execution step S22 returned to.If this control command is neither driving restriction instruction, neither data recover instruction, in the situation that can not judging which kind of instruction is this control command be, in the present invention, long-range march restriction controller is carried out the control identical with the control command of not receiving the transmission of vehicle background management system to engine system, perform step S22, after the surge time once powering on vehicle, long-range march restriction controller sends and controls data to engine system, engine system contrasts judgement according to the data of the configuration of these control data and storage, determine whether to enter driving restriction state, finishing this driving restriction controls.The concrete implementation of step S22 is described in detail in step S22, at this, does not repeat one by one.
In the situation that this control command of judgement is data recovery instruction, then perform step S26.
Step S26, after the surge time once powering on, sends data by long-range march restriction controller to engine system and recovers instruction on vehicle, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
Refer to Fig. 4, be shown as the particular flow sheet of step S26 in the control method of a kind of long-range march restriction of the present invention.As shown in Figure 4, described step S26 specifically comprises:
Step S261, after the surge time once powering on vehicle, long-range march restriction controller sends these data to engine system and recovers instruction and controller sequence number; In step S261, described surge time can specifically arrange, but reserve enough cache-times after should be the powering on of long-range march restriction controller, simultaneously for not affecting the toggle speed of vehicle, after long-range march restriction controller powers on, the time of delaying is unsuitable oversize, is generally 80ms ~ 110ms.Particularly, in the present embodiment, long-range march restriction controller, after upper 100ms after once powering on, sends this data to engine system and recovers instruction and controller sequence number; Then perform step S262.
Step S262, engine system judges that whether inner with being stored in it this controller sequence number controller sequence number be consistent, has verified whether the controller that it is implemented to control is it to be carried out to the long-range march restriction controller of data configuration; If inconsistent, execution step S263, if consistent, performs step S264.
Step S263, engine system enters driving restriction state, finishes this driving restriction and controls.
Step S264, in the situation that engine system judges that this controller sequence number controller sequence number inner with being stored in it is consistent, sends random cipher to long-range march restriction controller; Random cipher can produce in several ways, and in the present invention, engine system adopts aes algorithm or LaS Vegas algorithm to generate random cipher.Then perform step S265.
Step S265, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system; Then perform step S266.
Step S266, engine system, after receiving this identifying code, judges this check code; If check code is correct, execution step S267; If check code mistake, execution step S263, in the present embodiment, if check code mistake also performs step S268 simultaneously, engine system is simultaneously also to an error indication signal of long-range march restriction controller feedback simultaneously.If check code mistake, what explanation sent driving driving instruction to engine system may not be the driving restriction controller in former vehicle, there is the possibility being replaced in former driving restriction controller, now engine system enters driving restriction state, and engine system can also be to an error indication signal of long-range march restriction controller feedback, to point out the operation failure of the data dump of the configuration that engine system is done.
Step S267, if check code is correct, engine system is removed the data of the configuration of storage inside, engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.Now, can recycle long-range march restriction controller when needed.
In sum, the control method of a kind of long-range march restriction of the present invention, has following beneficial effect:
1, the present invention can refund above the vehicle of supervising for any needs, when user's refund is in arrears with to some extent, or when refusal is refunded, utilize vehicle background management system, by the long-range march restriction controller in vehicle, the output of engine system is limited, reach the object of restriction Vehicle Driving Cycle.
2, the present invention takes when mutual the mode of checking to complete the coupling of engine system and long-range march restriction controller by pre-configured data and paired domination number, the output of control engine system, solved in prior art, need expert engineer to be equipped with professional calibration tool, the problem of mating between the two.
3, engine system at every turn before startup in, once not receive the control data (order of restriction rotating speed/moment of torsion) of long-range march restriction controller, engine system just can be advanced into driving restriction state certainly, the invention solves long-range march restriction controller split, destroy and problem that the limitation function that causes driving a vehicle lost efficacy.
4, the present invention utilizes engine system first to confirm the controller sequence number of long-range march restriction controller, regeneration random cipher, finally confirm that according to random cipher the reciprocal process of the check code of generation can effectively solve long-range march restriction controller by various forms of controller substitution problem.
5, the present invention utilizes the surge time that engine system powers on to before starting at every turn, completes when time setting of driving limitation function, avoids, in driving process, carrying out speed limit setting, guarantees traffic safety.
6,, in the present invention, each vehicle, when starting, utilizes long-range march restriction controller to control data to engine system one-time write, has reduced to the full extent to control the decrypted possibility of data.
7, in the present invention, client repaying complete or the vehicle lost found after, vehicle background management system can the driving restriction of long-range releasing to vehicle, recovers the Default Value of engine system, when needed, can also recycle long-range march restriction controller.
8, the present invention simultaneously is also applicable to all vehicles, after vehicle is stolen, by vehicle background management system, the output of the engine system in Long-distance Control vehicle is limited, and makes vehicle enter driving restriction state.
So the present invention has effectively overcome various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all can, under spirit of the present invention and category, modify or change above-described embodiment.Therefore, such as in affiliated technical field, have and conventionally know that the knowledgeable, not departing from all equivalence modifications that complete under disclosed spirit and technological thought or changing, must be contained by claim of the present invention.
Claims (10)
1. the control method of long-range march restriction, in the process that is applied to by vehicle background management system, vehicle be controlled, the engine system that described vehicle has long-range march restriction controller and controlled by this long-range march restriction controller, described long-range march restriction controller is connected with vehicle background management system by wireless network, it is characterized in that, described control method at least comprises the following steps:
S1, carries out data configuration by long-range march restriction controller to engine system, and makes the data of engine system stored configuration, and the data of described configuration at least comprise controller sequence number;
S2, after completing above-mentioned data configuration, vehicle background management system is realized the driving restriction of vehicle is controlled by long-range march restriction controller, specifically comprises the following steps:
S21, long-range march restriction controller judges whether to receive the control command that vehicle background management system sends; If not, execution step S22, if so, performs step S23;
S22, after the surge time once powering on vehicle, long-range march restriction controller sends and controls data to engine system, and engine system contrasts judgement according to the data of the configuration of these control data and storage, determine whether to enter driving restriction state, finish this driving restriction and control;
S23, judges whether this control command is driving restriction instruction, if so, performs step S24, if not, and execution step S25;
S24, after the surge time once powering on vehicle, long-range march restriction controller stops sending and controlling data to engine system, engine system is not received the control data that long-range march restriction controller sends in Preset Time, enter driving restriction state, finish this driving restriction and control;
S25, judges whether this control command is that data are recovered instruction, if so, performs step S26, if not, and execution step S22;
S26, after the surge time once powering on, sends data by long-range march restriction controller to engine system and recovers instruction on vehicle, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
2. the control method that long-range march according to claim 1 limits, is characterized in that: step S1 specifically comprises the following steps:
S11, vehicle background management system sends configuration-direct to long-range march restriction controller;
S12, long-range march restriction controller, after upper surge time after once powering on, sent configuring request information to engine system;
S13, engine system, after receiving this solicited message, generates a random cipher to long-range march restriction controller;
S14, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S15, engine system judges this check code; If check code is correct, the data that configure from the reception of long-range march restriction controller the data of storing this configuration; If check code mistake, to an error indication signal of long-range march restriction controller feedback.
3. the control method of long-range march restriction according to claim 2, is characterized in that: in step S12, described surge time is 80ms ~ 110ms.
4. the control method of long-range march restriction according to claim 1, is characterized in that: the execution time of step S22 is limited in 500ms; While exceeding 500ms, engine system enters driving restriction state, finishes this driving restriction and controls.
5. the control method that long-range march according to claim 1 limits, is characterized in that: step S22 specifically comprises:
S221, after the surge time once powering on vehicle, long-range march restriction controller sends driving driving instruction and controller sequence number to engine system;
S222, engine system judges that whether inner with being stored in it this controller sequence number controller sequence number be consistent; If inconsistent, execution step S223, if consistent, performs step S224;
S223, engine system enters driving restriction state, finishes this driving restriction and controls;
S224, sends random cipher to long-range march restriction controller;
S225, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S226, engine system judges this check code; If check code mistake, execution step S223, if check code is correct, execution step S227;
S227, engine system responds the driving driving instruction receiving, and engine system normally starts operation, finishes this driving restriction and controls.
6. the control method of long-range march restriction according to claim 5, is characterized in that: in step S221, described surge time is 80ms ~ 110ms.
7. the control method of long-range march restriction according to claim 1, is characterized in that: in step S24, described Preset Time is 350ms ~ 500ms.
8. the control method that long-range march according to claim 1 limits, is characterized in that: step S26 specifically comprises the following steps:
S261, after the surge time once powering on vehicle, long-range march restriction controller sends these data to engine system and recovers instruction and controller sequence number;
S262, engine system judges that whether this controller sequence number controller sequence number inner with being stored in it be consistent; If inconsistent, execution step S263, if consistent, performs step S264;
S263, engine system enters driving restriction state, finishes this driving restriction and controls;
S264, sends random cipher to long-range march restriction controller;
S265, long-range march restriction controller generates a check code according to this random cipher, and this check code is sent to engine system;
S266, engine system judges this check code; If check code mistake, execution step S263, if check code is correct, execution step S267;
S267, engine system is removed the data of the configuration of storage inside, and engine system is recovered the data of original configuration of dispatching from the factory, and finishes this driving restriction and controls.
9. the control method of long-range march restriction according to claim 8, is characterized in that: in step S261, described surge time is 80ms ~ 110ms.
10. the control method that long-range march according to claim 8 limits, is characterized in that: in step S266, if check code mistake is further comprising the steps of:
S268, engine system is simultaneously also to an error indication signal of long-range march restriction controller feedback.
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