CN103661243A - Method and system for managing pilot modes of vehicles - Google Patents
Method and system for managing pilot modes of vehicles Download PDFInfo
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Abstract
The invention relates to a method for managing pilot modes of vehicles. The method includes: 1, inputting passwords by a password input unit; 2, encrypting the input passwords by a password encrypting module and constituting bus information to be transmitted; 3, transmitting the bus information by a bus information transmitting module according t the preset transmitting period; 4, transmitting the bus information to a pilot mode management module through a bus; 5, receiving the bus information and confirming whether the information is available or not by means of the pilot mode management module; 6, broadcasting start/stop information of a pilot mode on the bus by the pilot mode management module if the bus information is available, and not broadcasting the start/stop information of the pilot mode on the bus by the pilot mode management module if the bus information is unavailable. The invention further relates to a system for implementing the method. Without additional pilot key or hardware resources, the method and the system for managing the pilot modes of vehicles are lower in cost.
Description
Technical field
The present invention relates to vehicle for driving schema management.
Background technology
In generation,, the pattern of driving was a kind of special pattern of startup when car owner gives vehicle others and uses, and it is by forbidding opening boot/glove box, forbade that the modes such as individual operation protect car owner's privacy.At present, main by separately joining special realizing for driving the startup of pattern and exiting for the mode of driving key or adopt the input of switch hardware to trigger.
Fig. 1 show use special in the block diagram of realizing of driving key.In this scheme, Body control module need to be identified key, if be identified as generation, drives key, starts vehicle for driving pattern, and remain under this pattern, until Body control module just can return in normal vehicle mode while recognizing the master key of vehicle always.This scheme needs vehicle except master key, separately to join a generation to drive key, and this key can be that the Shi You car load factory of dispatching from the factory has configured, and also can have been configured by after-sales service shop.Because car key price general charged is higher, this has not only increased the cost of car load, also to user, cause constant, the risk that exists key to lose.
Fig. 2 shows the method that adopts the input of switch hardware to trigger.Body control module connects for the hardware pin of driving pattern starting switch, so that high level output, but be off-state for the switch of driving pattern, earth-free.When car owner needs generation to drive, first by car owner, press generation and drive starting switch, now switch conduction, the direct ground connection in loop, Body control module obtains switch hardware input low level signal condition, just can start for driving pattern, and in bus, broadcast generation and drive mode state information (startup); Then car owner closes glove box and is pinned, and carries glove box key during from car.At needs, remove generation while driving pattern, car owner need to be again with key open glove box discharge the inside for driving starting switch, now switch disconnects, Body control module is input as dummy status (being that high level is without loop) backed off after random generation and drives pattern obtaining switch hardware.In whole process, Body control module need to carry out on off state the interruption processing of high priority, and is aided with the hardware input processings such as sampling/filtering.In this mode, in generation, drives mode switch input and corresponding hardware handles and also can cause the cost of Body control module etc. to rise.Its safety is simultaneously worth discussion, once because lawless person opens glove box by illegal means, will be removed easily for the pattern of driving.
Along with vehicle is more prevalent for what drive; more user starts to consider the car owner's secret protection during generation drives; generation the pattern of driving also will be gradually in universal in rudimentary vehicle; therefore need a kind of vehicle cheaply for driving schema management method and the system that can realize the method, to tackle for the pattern of driving, more and more apply.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of vehicle for driving schema management method, and the method comprising the steps of:
(a) utilize password input block input password;
(b) utilize password encryption module to be encrypted the password of input, form bus message to be sent;
(c) utilize bus message sending module to send described bus message by the predetermined transmission cycle;
(d) by bus, bus message is transferred to for driving schema management module;
(e) utilizing described generation to drive schema management module receives bus message and confirms that whether this information is effective;
(f) if bus message is effective, in described generation, drives schema management module and in described bus, broadcasts the message that starts/exit for the pattern of driving, to start/to exit generation, drive pattern, if bus message is invalid, in generation, drives schema management module and can in bus, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern
Wherein, the described encryption of step (b) is specially: in the byte of bus message, password with front 6 bit representation inputs, last 2 bit representation rolling codes, during input password, by the predetermined transmission cycle in step (c), the value of password encryption inside modules adds 1 after each transmission bus message, again by the value of described inside divided by 4 remainder numbers, obtain between " 00,01,10,11 " continuously and the rolling code value of circulation change.
Particularly, in step (e), if generation drive rolling code value that bus message that administration module receives obtains after resolving between " 00,01,10,11 " continuously and circulation change, or rolling code value is when remain unchanged, to drive schema management module confirmation invalid described generation; Or
If rolling code value is continuous and circulation change between " 00,01,10,11 ", but the value that represents a certain position of password in bus message byte is remaining input state surpassing in the time of predetermined threshold, to drive schema management module confirmation invalid described generation.
Preferably, in generation,, to drive administration module integrated with vehicle anti-theft control module in Body control module, and now described step (f) is: described vehicle anti-theft control module reads and judges car owner's key information, if
(i) key information is correct, vehicle anti-theft control module outputs to described generation by key information and drives schema management module, in generation, driving schema management module has obtained in correct key information and bus message actv. situation, in generation, drives schema management module and in described bus, broadcasts the message that starts/exit for the pattern of driving, and to start/to exit generation, drives pattern;
(ii) key information is correct, vehicle anti-theft control module outputs to described generation by key information and drives schema management module, if now bus message is invalid, in generation, drives schema management module and can in described bus, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern; Or
(iii) key information mal, vehicle anti-theft control module can not output to key information described generation and drive schema management module, no matter whether described bus message is effective, in generation, drives schema management module and all can in described bus, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern.
Preferably, described bus message sending module is the central control panel of vehicle, and described password input block is the digital keys on central control panel, and described password encryption module is counting machine, and described bus is vehicle CAN bus, and described predetermined threshold is 30 seconds.
Particularly, when central control panel comprises 6 digital keys, described bus message comprises a byte, and first 6 of this byte represent respectively the input of pressing these 6 digital keys, last 2 bit representation rolling codes;
When central control panel comprises 9 digital keys, described bus message comprises two bytes, wherein first 6 of first byte represent respectively the input of pressing 6 digital keys in these 9 digital keys, last 2 bit representation rolling codes, and front 3 reservations of second byte, the 4th to 6 represent respectively the input of pressing all the other 3 digital keys in these 9 digital keys, last 2 bit representation rolling codes.
The present invention also proposes a kind of vehicle for driving schema management system, and this system comprises:
Password input block, for inputting password;
Password encryption module, for the password of input is encrypted, forms bus message to be sent;
Bus message sending module, sends described bus message for the transmission cycle by predetermined;
Bus, for transfer bus information;
In generation, is driven schema management module, for receiving the bus message of described bus transfer and confirming that whether this information is effective, if bus message is effective, in described generation, drives schema management module and in described bus, broadcasts the message that starts/exit for the pattern of driving, to start/to exit for driving pattern, if bus message is invalid, in generation, drives schema management module and can in bus, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern
Wherein, the encryption of described password encryption module is specially: in the byte of bus message, password with front 6 bit representation inputs, last 2 bit representation rolling codes, during input password, by the above-mentioned predetermined transmission cycle, the value of password encryption inside modules adds 1 after each transmission bus message, again by the value of described inside divided by 4 remainder numbers, obtain between " 00,01,10,11 " continuously and the rolling code value of circulation change.
Vehicle of the present invention increases for driving key or hardware resource without extra for driving schema management method and management system, and cost is relatively low.Because rolling code is by reference encrypted input password, vehicle of the present invention generation drive schema management method and management system more safe and reliable compared with traditional scheme.
Accompanying drawing explanation
Fig. 1 is used special for driving key, to realize the block diagram that vehicle generation drives schema management.
Fig. 2 is used the input of switch hardware to trigger to realize vehicle for the block diagram of driving schema management.
Fig. 3 is the general block diagram of driving schema management system generation of the present invention.
Fig. 4 a and Fig. 4 b are the diagram of circuits of generation of the present invention driving schema management method.
Fig. 5 is the functional block diagram of generation of the present invention driving the preferred embodiment of schema management system.
Fig. 6 is the detailed diagram of generation of the present invention driving the preferred embodiment of schema management system.
The specific embodiment
As shown in Figure 3, in generation of the present invention, drives schema management system and comprises that password input block 101, password encryption module 102, bus message sending module 103, bus 104 and generation drive schema management module 105.Described password input block 101 and described bus message sending module 103 communication connections, arrange password encryption module 102 on the communication link between the two, bus message sending module 103 is driven 105 communication connections of schema management module through bus 104 and generation.If bus 104 is transmitted the password of input in the mode of plain code, password may be stolen easily, and therefore the setting of described password encryption module 102 is necessary.As can be seen here, essence of the present invention is, by inputting predefined password and it being transmitted to realize for driving the startup of management mode or exiting with the form of encrypting.In addition, generation of the present invention is driven schema management system preferably will be integrated with vehicle anti-theft control module 106 for driving schema management module 105 in Body control module, make can not enter generation to drive pattern in the situation that vehicle is stolen.
The step that generation of the present invention is driven schema management method as shown in Figure 4, mainly comprises: first, user is by password input block 101 input passwords (step 201); Afterwards, the password of 102 pairs of inputs of password encryption module is encrypted, to form bus message (step 202); Next, bus message sending module 103 sends (step 203) by described bus message by the predetermined transmission cycle; The bus message sending transfers to for driving schema management module 105(step 204 through bus 104); Whether effectively generation drives schema management module 105 and receives bus message and confirm this information (step 205); If bus message is effective, in generation, drives schema management module 105 and in bus 104, broadcasts the message that starts/exit for the pattern of driving, to start/exit generation, drive pattern (step 206a), if bus message is invalid, in generation, drives schema management module 105 and can in bus 104, not broadcast the message that starts/exit for the pattern of driving, and generation drives pattern and therefore can not start/exit (step 206b).
Preferably, drive schema management module 105 present age when integrated in Body control module with vehicle anti-theft control module 106, in Body control module not only will be according to bus message for driving schema management module 105, the current antitheft authentication scenario that also will provide in conjunction with vehicle anti-theft control module 106, determines whether the message that the broadcast generation pattern of driving starts/exits in bus 104.Now step 206a and 206b are replaced by following step 207a, 207b and 207c:, when vehicle anti-theft control module 106 provides correct car owner's key information (being that vehicle does not have stolen situation) and bus message when effective, in generation, drives schema management module 105 and in bus 104, broadcasts the message that starts/exit for the pattern of driving, to start/exit generation, drives pattern (step 207a); When vehicle anti-theft control module 106 provides correct car owner's key information (being that vehicle does not have stolen situation) but bus message when invalid, in generation, drives schema management module 105 and can in bus 104, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern (step 207b); When vehicle anti-theft control module 106 fails to provide correct car owner's key information (situation that vehicle is stolen), no matter whether bus message is effective, in generation, drives schema management module 105 and all can in bus 104, not broadcast the message that starts/exit for the pattern of driving, thereby can not start/exit for driving pattern (step 207c).
Visible, enforcement of the present invention does not need to increase special in driving key; And in order not increase new hardware resource, the parts that comprise in system of the present invention can be selected the standard configuration of vehicle.Fig. 5 is the block diagram of generation of the present invention driving the preferred embodiment of schema management system.As shown in the figure, can as password input block 101, input with the digital keys on vehicle central control panel the password of digital form, central control panel itself is bus message sending module 103, the controller local area network of vehicle (CAN) bus transfers to Body control module 105 as above-mentioned bus 104 by password and starts/exit for driving pattern, password encryption module 102 can adopt the form of counting machine, and other control modules in Fig. 5 are driven after the status information of pattern when vehicle in front generation obtaining, enter/exit generation to drive the associative operation of pattern regulation.
The preferred embodiment of below generation of the present invention being driven to schema management method and management system is specifically described.
Central control panel is the vehicle-mounted bus unit of vehicle standard configuration, and its digital keys is generally used for radio station list selection or CD song is selected; And in the present invention, central control panel and digital keys thereof, except for above-mentioned purpose, are also being born the task that user drives the input of pattern password and the transmission of CAN bus message generation.
Safety and reliability in order to ensure the password of inputting in bus transfer process, in generation of the present invention, drive in the above-mentioned steps 202 of schema management method, to being encrypted by pressing the password that the digital keys of central control panel inputs, be specifically described below.
Because the digital keys of central control panel has two kinds of number of keys (6 keys or 9 keys), correspondingly, can use 1 or 2 bus message byte (Byte) to encode, as shown in table 1.In each byte, last 2 (Bit) input as rolling code.Password encryption module 102(is counting machine in this case) according to predetermined bus message, send the cycle, after each transmission information, counting machine adds 1, again by Counter Value divided by 4 remainder numbers, can obtain thus numerical value between " 00,01,10,11 " continuously and the code of circulation change.For the central control panel of 6 keys, front 6 corresponding these 6 buttons respectively of its bus message byte, represent the password of real digital form; For the central control panel of 9 keys, the 4th to 6 of front 6 and second the bus message bytes of first bus message byte respectively corresponding these 9 buttons, represent the password of real digital form.Owing to the rolling code constantly changing being enrolled among bus message, so the information being presented in bus is constantly to change, do not know that the people of coded system is difficult to crack true password wherein.
Table 1
It is example that the following description all be take the central control panel of 6 keys.The currency of supposing counting machine is 100, and as can be seen from Table 2, when input " 1 " (from the #1 that pushes button to lifting), dynamic change " $ 04, $ 05, $ 06, $ 03 " can occur bus message.
Table 2
It may be noted that, bus message value herein adopts the binary-coded decimal of 16 systems to represent, Bit 7 ~ Bit0 can be divided into 0 two sections of Bit 7 ~ Bit 4 and Bit 3 ~ Bit, the bus value " $ 04 " of take in table 2 is example, " 0000 " of Bit 7 ~ Bit 4 represents the first " 0 ", Bit 3 ~ Bit 0 " 0100 " represents " 4 " of position, end, below all adopts this method for expressing.
In addition,, due to the length possibility different (the above-mentioned bus message that comprises varying number sends the cycles) of button time, the bus message value of pressing same button also can change.When button time expand, the bus message value of input " 1 " can become " $ 04, $ 05, $ 06, $ 07, $ 00 ", when the button time, shorten, the bus message value of input " 1 " can become " $ 04, $ 05, $ 02 ", (comprise respectively 5 and 3 bus messages transmission cycles, and the situation shown in table 2 comprises 4 bus messages transmission cycles) respectively as shown in Table 3 and Table 4.It is pointed out that the time of pressing a certain button can not surpass predetermined threshold value, when surpassing this threshold value, thereby it is invalid to think to have blocked button qualified information.
Table 3
Table 4
On the other hand, counting machine adds up, and when user inputs password again, because variation has occurred for the initial value of counting machine, the value of rolling code also can correspondingly change, and has further guaranteed the safety of user password.Situation as shown in table 5, when user inputs password " 1 " again, the initial value of counting machine is " 102 ", so the value of rolling code is " 02 ", thereby bus message now from above shown in input password " 1 " time bus message different.
Table 5
According to above principle, link up now the situation of seeing actual 4-digit number password.The password " 1234 " of take is example, and table 6 and table 7 have contrasted the different bus message value that different button durations causes, and table 7 and table 8 have contrasted the different bus message value that different counting machine initial values causes.
Table 6
Table 7
Table 8
In generation, is driven schema management module 105 after receiving bus message, according to the coded system of aforementioned bus message, can parse the password of current input, obtain current rolling code value simultaneously, rolling code should be can not exceed " 00,01,10,11 " scope continuously and the value of circulation change.
According to this principle, when the bus message receiving occurs saltus step or remains unchanged through the rolling code value obtaining after resolving, can judge that current bus message is invalid, the password mal obtaining; When rolling code value is continually varying, but the position that represents certain button in bus message byte for example, is representing in input state all the time over (30s) in the time of aforementioned predetermined threshold, can judge that current bus message is normal, but this button may be stuck, the password mal obtaining.
Known by above-mentioned analysis, rolling code introduced in password to the digital keys input by central control panel, and the password of rolling code and input is enrolled to same CAN bus message byte, the numerical value that utilizes rolling code constantly to change, make bus message produce the variation of rolling, the safety issue while having solved CAN bus transfer.Meanwhile, by rolling code itself, possess the feature of serial number, improved the reliability of bus message transmission.
Fig. 6 is the detailed diagram of generation of the present invention driving the specific embodiment of schema management system, wherein shows generation to drive integrated in Body control module of schema management module and vehicle anti-theft control module.The security module of the antitheft authentication function of vehicle in Body control module is responsible for, and it bears the work such as the reading of key information, identification and engine anti-theft authentication.When not considering that generation is driven pattern, vehicle anti-theft control module is after reading key information and judging that information is correct, divide two-way work, it is mutual to lead up to bus and engine control module, carry out engine anti-theft authentication, another road outputs to CAN bus by the numbering of key, for chaufeur customization function.
When vehicle is when generation is driven pattern, although vehicle is not in car owner's control, vehicle anti-theft authentication also must normally be worked, and generation drives pattern and should not have influence on vehicle anti-theft authentication function.Meanwhile, in generation, is driven the state that pattern also needs to obtain vehicle anti-theft authentication, especially needs to know the authentication scenario of current key, only has legal car key just can enter, maintain or exit for driving mode state.So in the present invention, generation is driven schema management module need to be in conjunction with current vehicle anti-theft authentication situation, and then show that its generation drives the definite state of pattern, and the message that the broadcast generation pattern of driving starts/exits in bus.
Newly-increased for the functional independence of driving schema management module in security module, do not affect the normal work of antitheft authentication.Security module, after reading key information and judging that information is correct, increases by a road key numbering and outputs to for driving schema management module.In generation, drives schema management module and only after obtaining key numbering, just can enter real mode of operation, can work as the judgement that former generation is driven mode state, and can receive and process the input from the bus message of CAN bus, to tackle for the change of driving mode state.If the judgement of security module is current, be illegal key invasion, will can not export key numbering, these epoch drive schema management module and will can not work.
Hence one can see that, vehicle of the present invention generation is driven schema management system will be for driving administration module and vehicle anti-theft authentication function has been carried out integrated, in the situation of guaranteeing not affect the normal operation of vehicle anti-theft function, by increasing by a road key numbering output, as generation, drive the enable signal of schema management, make generation drive pattern also in the antitheft administrative measure of car load, guaranteed for the safety of driving state.
The invention is not restricted to above-described specific embodiment, it will be understood by those skilled in the art that not deviating under the prerequisite of technical conceive of the present invention, can change above-described embodiment.For example, the present invention not only can drive pattern for generation, can also for example, for other vehicle management patterns (pattern of hiring a car), and extendability and application are better.
Claims (10)
1. vehicle, for driving a schema management method, is characterized in that, the method comprising the steps of:
(a) utilize password input block (101) input password;
(b) utilize password encryption module (102) to be encrypted the password of input, form bus message to be sent;
(c) utilize bus message sending module (103) to send described bus message by the predetermined transmission cycle;
(d) by bus (104), bus message is transferred to for driving schema management module (105);
(e) utilizing described generation to drive schema management module (105) receives bus message and confirms that whether this information is effective;
(f) if bus message is effective, in described generation, is driven the message that schema management module (105) starts/exits in the upper broadcast of described bus (104) the generation pattern of driving, to start/to exit generation, drive pattern, if bus message is invalid, in generation, is driven the message that schema management module (105) can not start/exit in the upper broadcast of bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern
Wherein, the described encryption of step (b) is specially: in the byte of bus message, password with front 6 bit representation inputs, last 2 bit representation rolling codes, during input password, by the predetermined transmission cycle in step (c), the inner value of password encryption module (102) adds 1 after each transmission bus message, again by the value of described inside divided by 4 remainder numbers, obtain between " 00,01,10,11 " continuously and the rolling code value of circulation change.
2. method according to claim 1, is characterized in that, in step (e),
If generation drive rolling code value that bus message that administration module (105) receives obtains after resolving between " 00,01,10,11 " continuously and circulation change, or when rolling code value remains unchanged, to drive schema management module (105) confirmation invalid described generation; Or
If rolling code value is continuous and circulation change between " 00,01,10,11 ", but the value that represents a certain position of password in bus message byte is remaining input state surpassing in the time of predetermined threshold, to drive schema management module (105) confirmation invalid described generation.
3. method according to claim 1, it is characterized in that, in generation,, to drive administration module (105) integrated with vehicle anti-theft control module (106) in Body control module, and now described step (f) is: described vehicle anti-theft control module (106) reads and judges car owner's key information, if
(i) key information is correct, vehicle anti-theft control module (106) outputs to described generation by key information and drives schema management module (105), in generation, driving schema management module (105) has obtained in correct key information and bus message actv. situation, in generation, is driven the message that schema management module (105) starts/exits in the upper broadcast of described bus (104) the generation pattern of driving, and to start/to exit generation, drives pattern;
(ii) key information is correct, vehicle anti-theft control module (106) outputs to described generation by key information and drives schema management module (105), if now bus message is invalid, in generation, is driven the message that schema management module (105) can not start/exit in the upper broadcast of described bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern; Or
(iii) key information mal, vehicle anti-theft control module (106) can not output to key information described generation and drive schema management module (105), no matter whether described bus message is effective, in generation, is driven the message that schema management module (105) all can not start/exit in the upper broadcast of described bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern.
4. according to the method in claim 2 or 3, it is characterized in that, described bus message sending module (103) is the central control panel of vehicle, described password input block (101) is the digital keys on central control panel, described password encryption module (102) is counting machine, described bus (104) is vehicle CAN bus, and described predetermined threshold is 30 seconds.
5. method according to claim 4, is characterized in that,
When central control panel comprises 6 digital keys, described bus message comprises a byte, and first 6 of this byte represent respectively the input of pressing these 6 digital keys, last 2 bit representation rolling codes;
When central control panel comprises 9 digital keys, described bus message comprises two bytes, wherein first 6 of first byte represent respectively the input of pressing 6 digital keys in these 9 digital keys, last 2 bit representation rolling codes, and front 3 reservations of second byte, the 4th to 6 represent respectively the input of pressing all the other 3 digital keys in these 9 digital keys, last 2 bit representation rolling codes.
6. vehicle, for driving a schema management system, is characterized in that, described system comprises:
Password input block (101), for inputting password;
Password encryption module (102), for the password of input is encrypted, forms bus message to be sent;
Bus message sending module (103), sends described bus message for the transmission cycle by predetermined;
Bus (104), for transfer bus information;
In generation, is driven schema management module (105), be used for receiving the bus message of described bus (104) transmission and confirming that whether this information is effective, if bus message is effective, in described generation, is driven the message that schema management module (105) starts/exits in the upper broadcast of described bus (104) the generation pattern of driving, to start/to exit generation, drive pattern, if bus message is invalid, in generation, is driven the message that schema management module (105) can not start/exit in the upper broadcast of bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern
Wherein, the encryption of described password encryption module (102) is specially: in the byte of bus message, password with front 6 bit representation inputs, last 2 bit representation rolling codes, during input password, by the above-mentioned predetermined transmission cycle, the inner value of password encryption module (102) adds 1 after each transmission bus message, again by the value of described inside divided by 4 remainder numbers, obtain between " 00,01,10,11 " continuously and the rolling code value of circulation change.
7. system according to claim 6, is characterized in that,
If generation drive rolling code value that bus message that administration module (105) receives obtains after resolving between " 00,01,10,11 " continuously and circulation change, or when rolling code value remains unchanged, to drive schema management module (105) confirmation invalid described generation; Or
If rolling code value is continuous and circulation change between " 00,01,10,11 ", but the value that represents a certain position of password in bus message byte is remaining input state surpassing in the time of predetermined threshold, to drive schema management module (105) confirmation invalid described generation.
8. system according to claim 6, it is characterized in that, it is integrated with vehicle anti-theft control module (106) in Body control module that in generation, is driven administration module (105), described vehicle anti-theft control module (106) reads and judges car owner's key information, now, be used for receiving the bus message of described bus (104) transmission and confirm this information whether actv. is taken action in conjunction with the situation of bus message and car owner's key information for driving administration module (105), be specially, if
(i) key information is correct, vehicle anti-theft control module (106) outputs to described generation by key information and drives schema management module (105), in generation, driving schema management module (105) has obtained in correct key information and bus message actv. situation, in generation, is driven the message that schema management module (105) starts/exits in the upper broadcast of described bus (104) the generation pattern of driving, and to start/to exit generation, drives pattern;
(ii) key information is correct, vehicle anti-theft control module (106) outputs to described generation by key information and drives schema management module (105), if now bus message is invalid, in generation, is driven the message that schema management module (105) can not start/exit in the upper broadcast of described bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern; Or
(iii) key information mal, vehicle anti-theft control module (106) can not output to key information described generation and drive schema management module (105), no matter whether described bus message is effective, in generation, is driven the message that schema management module (105) all can not start/exit in the upper broadcast of described bus (104) the generation pattern of driving, thereby can not start/exit for driving pattern.
9. according to the system described in claim 7 or 8, it is characterized in that, described bus message sending module (103) is the central control panel of vehicle, described password input block (101) is the digital keys on central control panel, described password encryption module (102) is counting machine, described bus (104) is vehicle CAN bus, and described predetermined threshold is 30 seconds.
10. system according to claim 9, is characterized in that,
When central control panel comprises 6 digital keys, described bus message comprises a byte, and first 6 of this byte represent respectively the input of pressing these 6 digital keys, last 2 bit representation rolling codes;
When central control panel comprises 9 digital keys, described bus message comprises two bytes, wherein first 6 of first byte represent respectively the input of pressing 6 digital keys in these 9 digital keys, last 2 bit representation rolling codes, and front 3 reservations of second byte, the 4th to 6 represent respectively the input of pressing all the other 3 digital keys in these 9 digital keys, last 2 bit representation rolling codes.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112776736A (en) * | 2019-11-08 | 2021-05-11 | 上海博泰悦臻电子设备制造有限公司 | Privacy protection configuration/implementation method/system, storage medium and vehicle terminal |
| CN111681662A (en) * | 2020-06-01 | 2020-09-18 | 科大讯飞股份有限公司 | In-vehicle interactive audio encryption method, device and equipment |
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