CN102951116B - Antitheft locking method for power system of hybrid vehicle - Google Patents
Antitheft locking method for power system of hybrid vehicle Download PDFInfo
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Abstract
The invention discloses an antitheft locking method for a power system of a hybrid vehicle. The method mainly comprises the steps of: 1, communication verification between a wireless transmission module at an ignition key (1) and a power system antitheft control module (2) in the hybrid vehicle (5); and 2, communication verification between the power system antitheft control module in the hybrid vehicle and each of an engine control module (3) and a driving motor control module (4). The power system antitheft control module is used for judging whether a communication channel of the engine control module is normal or not, and judging whether a communication channel of the driving motor control module is normal or not if the communication channel of the engine control module is abnormal, thereby determining that a random verification code is transmitted through the engine control module or the driving motor control module; and once the random verification code is generated, the three control modules perform calculation according to the same built-in security code and a verification algorithm, and if calculation results are matched, a driving motor is allowed to be started or oil is allowed to be injected to release an antitheft state.
Description
Technical field
The present invention relates to a kind of implementation method of power system anti-theft locking of motor vehicle driven by mixed power.
Background technology
Along with increasingly sharpening of energy resource consumption and environmental pollution, new forms of energy car especially hybrid electric vehicle becomes the important implementation that the current generation solves the problem, parallel connection in motor vehicle driven by mixed power and series parallel type structure are the two kinds of structures applied at present widely, especially on manned vehicle.Along with the application that hybrid electric vehicle is increasingly extensive, the safety of vehicle also becomes problem demanding prompt solution.
Existing automobile dynamic system anti-theft technique mainly contain mechanical type, electronics chip type, network type etc., wherein most of vehicle all adopt electronics chip type anti-theft technique, main implementation be by ignition key with wireless transmitter module transmit to the antitheft receiver module be contained on vehicle, if the verification passes, then antitheft receiver module just carries out exchange message with engine control module and verifies, if checking is also passed through, engine control module just allows oil spout, otherwise just forbids oil spout.With the motor vehicle driven by mixed power of dual power source, if need to prevent stolen, just need to prevent from illegally starting two propulsions source, to guarantee the safety of whole vehicle.Current anti-theft technique is mainly applied to traditional vehicle with single power source (as driving engine), startup or the operation of single power source can only be limited, and for the motor vehicle driven by mixed power with dual power source, existing antitheft mode also cannot meet antitheft requirement.
Summary of the invention
The object of the present invention is to provide a kind of hybrid electric vehicle power system anti-theft locking implementation method, the method all can carry out antitheft checking to hybrid electric vehicle engine control module and drive motor control module.
In order to realize above-mentioned technical purpose, the present invention adopts following technical scheme:
A kind of hybrid electric vehicle power system anti-theft locking implementation method, is mainly divided into two steps:
The first step, the communication checking between the wireless transmitter module at ignition key place and the power system security module in hybrid electric vehicle; Second step, the communication checking between the power system security module in hybrid electric vehicle and the engine control module in hybrid electric vehicle, drive motor control module;
Described second step checking is only just carried out after the first step is verified, and comprises the steps:
1) first power system security module judges that whether the communication channel that engine control module is used for verifying is normal, if normally, then asks engine control module to send random verification code; Otherwise, judge that whether drive motor control module is normal for the communication channel verified, if normally, then ask drive motor control module to send random verification code; Otherwise, then terminate to verify communication;
2) engine control module judges whether to receive the request that power system security module sends random verification code, if received, then produces random verification code, and sends; Otherwise then wait for;
3) power system security module receives engine control module random verification code, and in conjunction with built-in security code in the lump as the input of cryptographic algorithm, is calculated, obtain result of calculation, and result of calculation sent by cryptographic algorithm;
4) engine control module also utilizes the random verification code of generation and built-in security code in the lump as the input of cryptographic algorithm simultaneously, is calculated, obtain result of calculation by cryptographic algorithm;
5) result of calculation that the power system security module received sends by engine control module compares with the result of calculation self calculated, if coupling, then allows oil spout; Otherwise, repeat to send random verification code, terminate after repeating to send some number of times;
6) first drive motor control module judges that whether the communication channel that engine control module is used for verifying is normal, if normally, then prepares the random verification code receiving engine control module transmission; Otherwise then wait-receiving mode sends the request of random verification code, and forwards 9 to);
7) the drive motor control module random verification code that utilizes the engine control module that receives to send and built-in security code are in the lump as the input of cryptographic algorithm, calculated, obtain result of calculation by cryptographic algorithm;
8) result of calculation of the result of calculation received and self calculating compares by drive motor control module, the result of calculation that the engine control module random verification code that the described result of calculation received receives for power system security module and built-in security code calculate as the input of cryptographic algorithm, if coupling, then allow to start drive motor;
9) drive motor control module utilizes the random verification code and built-in security code that produce in the lump as the input of cryptographic algorithm, is calculated, obtain result of calculation by cryptographic algorithm;
10) result of calculation of the result of calculation received and self calculating compares by drive motor control module, the result of calculation that the drive motor control module random verification code that the described result of calculation received receives for power system security module and built-in security code calculate as the input of cryptographic algorithm, if coupling, then allow to start drive motor; Otherwise, repeat to send random verification code, terminate after repeating to send some number of times.
The multiplicity that described engine control module and drive motor control module send random verification code is no more than 5 times.
By power system security module, the present invention judges that whether engine control module communication channel is normal, as mal then judges that whether drive motor control module communication channel is normal again, thus determine by engine control module to send random verification code, or send random verification code by drive motor control module, once after random verification code generation, three control modules calculate according to built-in identical security code and verification algorithm, if result of calculation is mated, then allow to start drive motor or oil spout, to discharge anti-theft state.Power system anti-theft locking implementation method of the present invention all carries out antitheft checking to hybrid electric vehicle engine control module and drive motor control module, thus ensure that the antitheft checking of dual power source, have safety, efficiently, feature flexibly, overcome traditional anti-theft verification method for the not enough defect of motor vehicle driven by mixed power dual power source checking.
Accompanying drawing explanation
Fig. 1 is hybrid electric vehicle power system anti-theft locking apparatus structural representation of the present invention;
Fig. 2 is hybrid electric vehicle power system anti-theft locking implementation method diagram of circuit of the present invention.
In figure: 1 ignition key, 2 power system security modules (security module), 3 engine control module, 4 drive motor control modules, 5 hybrid electric vehicles (automobile).
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
See Fig. 1 and Fig. 2, a kind of hybrid electric vehicle power system anti-theft locking apparatus, comprising: ignition key 1, is arranged on power system security module 2, engine control module 3 and drive motor control module 4 in motor vehicle driven by mixed power 5; Ignition key 1 is mechanical type or card form, wireless transmitter module is comprised in ignition key 1, power system security module 2 can receive the wireless messages that ignition key 1 sends, and power system security module 2 is through CAN connecting engine control module 3 and drive motor control module 4.
A kind of hybrid electric vehicle power system anti-theft locking implementation method, is mainly divided into two steps:
The first step is the communication checking between the wireless transmitter module of ignition key 1 and power system security module 2, and its communication checking is wirelessly carried out;
Second step is the communication checking between power system security module 2 and engine control module 3, drive motor control module 4, and its communication checking is undertaken by CAN, and baud rate is 500 bps.
In the present embodiment, power system security module 2 and the communication between engine control module 3 and drive motor control module 4 are verified and to be carried out detecting that ignition lock failure-free powers on after (IGN ON), and concrete steps are as follows:
1) power system security module 2, engine control module 3, drive motor control module 4 are after detecting that ignition lock failure-free powers on, and complete power-up initializing separately, comprise the initialization of communication channel, initialization time is no more than 300ms.
2) first power system security module 2 carries out communication checking with the wireless transmitter module in ignition key 1, if the verification passes, continues 3); Otherwise, repeat checking, no longer than 800ms.
3) power system security module 2 judges that whether the checking communication channel of engine control module 3 is normal, if normally, then power system security module 2 asks engine control module 3 to send random verification code; Otherwise, then 8 are forwarded to).
4), after engine control module 3 completes power-up initializing, wait-receiving mode security module 2 sends random verification code request, if receive request, then produces random verification code, and sends.
5) security module 2 is from sending after random verification code request in 100ms, must receive random verification code, otherwise resend random verification code request, be no more than at most 3 times; If security module 2 receives actv. random verification code, just in conjunction with built-in security code in the lump as the input of cryptographic algorithm, calculated by cryptographic algorithm, obtain result of calculation, and result of calculation is sent.
6) engine control module 3 also utilizes the random verification code of generation and built-in security code in the lump as the input of cryptographic algorithm simultaneously, is calculated, obtain result of calculation by cryptographic algorithm.
7) engine control module 3 is from sending after random verification code in 100ms, must receive the result of calculation that security module 2 sends, otherwise resend random verification code; If the result of calculation that engine control module 3 receives security module 2 transmission is mated with the result of calculation that himself calculates, then allow oil spout; Otherwise, resend random verification code.The above-mentioned number of times resending random verification code is always no more than at most 5 times.
8) security module 2 judges that whether the checking communication channel of drive motor control module 4 is normal, if normally, then security module 2 asks drive motor control module 4 to send random verification code, and forwards 12 to); Otherwise, then terminate.
9) after drive motor control module 4 completes power-up initializing, judge that whether engine control module 3 communication channel is normal, if normally, prepare the random verification code receiving engine control module 3 transmission; Otherwise, wait for that security module 2 sends random verification code request, and forward 13 to).
10) drive motor control module 4 random verification code that utilizes the engine control module 3 that receives to send and built-in security code are in the lump as the input of cryptographic algorithm, calculated, obtain result of calculation by cryptographic algorithm.
11) result of calculation that the security module 2 received sent of drive motor control module and the result of calculation that self calculates compare, described in the result of calculation that receives be the result of calculation obtained after being calculated by cryptographic algorithm as the input of cryptographic algorithm in the lump in conjunction with built-in security code after accepting by security module 2 random verification code that engine control module 3 sends; If the result of calculation that drive motor control module 4 receives security module 2 transmission is mated with the result of calculation that himself calculates, then allow to start drive motor; Otherwise, then random verification code is sent to security module 2.
12) security module 2 is from sending after random verification code request in 100ms, must receive random verification code, otherwise resend random verification code request, be no more than at most 3 times; If security module 2 receives actv. random verification code, just in conjunction with built-in security code in the lump as the input of cryptographic algorithm, calculated by cryptographic algorithm, obtain result of calculation, and result of calculation is sent.
13) drive motor control module 4 receives after security module 2 sends random verification code request, produces random verification code, and sends.
14) drive motor control module 4 also utilizes the random verification code of generation and built-in security code in the lump as the input of cryptographic algorithm, is calculated, obtain result of calculation by cryptographic algorithm.
15) drive motor control module 4 is from sending after random verification code in 100ms, must receive the result of calculation that security module 2 sends, otherwise resend random verification code; If the result of calculation that drive motor control module 4 receives security module 2 transmission is mated with the result of calculation that himself calculates, then allow to start drive motor; Otherwise, then random verification code is resend.The above-mentioned number of times resending random verification code is always no more than at most 5 times.
Through above-mentioned steps, complete the verification process of hybrid electric vehicle power system anti-theft locking.
In the present embodiment, above-mentioned time and multiplicity can adjust according to concrete hardware and system, start and antitheft requirement to meet car load.
These are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, therefore, all any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a hybrid electric vehicle power system anti-theft locking implementation method, is characterized in that: be mainly divided into two steps:
The first step, the communication checking between the wireless transmitter module at ignition key (1) place and the power system security module (2) in hybrid electric vehicle (5); Second step, the communication checking between the power system security module (2) in hybrid electric vehicle (5) and the engine control module (3) in hybrid electric vehicle (5), drive motor control module (4);
Described second step checking is only just carried out after the first step is verified, and comprises the steps:
1) power system security module (2) first judges that whether engine control module (3) is normal for the communication channel verified, if normally, then asks engine control module (3) to send random verification code; Otherwise, judge that whether drive motor control module (4) is normal for the communication channel verified, if normally, then ask drive motor control module (4) to send random verification code; Otherwise, then terminate to verify communication;
2) engine control module (3) judges whether to receive the request that power system security module (2) sends random verification code, if received, then produces random verification code, and sends; Otherwise then wait for;
3) power system security module (2) receives engine control module (3) random verification code, and in conjunction with built-in security code in the lump as the input of cryptographic algorithm, is calculated, obtain result of calculation, and result of calculation sent by cryptographic algorithm;
4) engine control module (3) also utilizes the random verification code of generation and built-in security code in the lump as the input of cryptographic algorithm simultaneously, is calculated, obtain result of calculation by cryptographic algorithm;
5) result of calculation that the power system security module (2) received sends by engine control module (3) compares with the result of calculation self calculated, if coupling, then allows oil spout; Otherwise, repeat to send random verification code, terminate after repeating to send some number of times;
6) drive motor control module (4) first judges that whether engine control module (3) is normal for the communication channel verified, if normally, then prepares the random verification code that reception engine control module (3) sends; Otherwise then wait-receiving mode sends the request of random verification code, and forwards 9 to);
7) drive motor control module (4) random verification code that utilizes the engine control module (3) received to send and built-in security code are in the lump as the input of cryptographic algorithm, calculated, obtain result of calculation by cryptographic algorithm;
8) result of calculation of the result of calculation received and self calculating compares by drive motor control module (4), the result of calculation that engine control module (3) random verification code that the described result of calculation received receives for power system security module (2) and built-in security code calculate as the input of cryptographic algorithm, if coupling, then allow to start drive motor;
9) drive motor control module (4) utilizes the random verification code and built-in security code that produce in the lump as the input of cryptographic algorithm, is calculated, obtain result of calculation by cryptographic algorithm;
10) result of calculation of the result of calculation received and self calculating compares by drive motor control module (4), the result of calculation that drive motor control module (4) random verification code that the described result of calculation received receives for power system security module (2) and built-in security code calculate as the input of cryptographic algorithm, if coupling, then allow to start drive motor; Otherwise, repeat to send random verification code, terminate after repeating to send some number of times.
2. hybrid electric vehicle power system anti-theft locking implementation method according to claim 1, is characterized in that: the multiplicity that described engine control module (3) and drive motor control module (4) send random verification code is no more than 5 times.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104340170B (en) * | 2013-08-02 | 2017-07-14 | 上海汽车集团股份有限公司 | The antitheft verification method and antitheft checking system of motor vehicle driven by mixed power |
| US9156438B2 (en) * | 2013-09-25 | 2015-10-13 | GM Global Technology Operations LLC | Attack resistant theft deterrent system |
| CN106627479B (en) * | 2016-12-23 | 2019-04-23 | 上海汽车集团股份有限公司 | The mixed dynamic anti-stealing method for vehicles of the plug-in of three controller cross-certification |
| CN106956661B (en) * | 2017-03-17 | 2020-05-05 | 安徽江淮汽车集团股份有限公司 | Anti-theft scheme for hybrid electric vehicle |
| CN109094516A (en) * | 2018-09-30 | 2018-12-28 | 安徽江淮汽车集团股份有限公司 | A kind of automobile anti-theft method and burglary-resisting system |
| CN112660068B (en) * | 2021-01-13 | 2022-04-08 | 浙江吉利控股集团有限公司 | Anti-theft control method and system for hybrid power vehicle |
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