CN105763403A - Vehicle-mounted control area network system - Google Patents
Vehicle-mounted control area network system Download PDFInfo
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- CN105763403A CN105763403A CN201410775179.8A CN201410775179A CN105763403A CN 105763403 A CN105763403 A CN 105763403A CN 201410775179 A CN201410775179 A CN 201410775179A CN 105763403 A CN105763403 A CN 105763403A
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- control unit
- bus
- gateway interface
- vehicle
- message package
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Abstract
Provided is a vehicle-mounted control area network system, which is arranged in an automobile, which allows a foreign electronic control unit to be loaded. The vehicle-mounted control area network system comprises a bus, original electronic control units matched with the automobile and a gateway interface. The bus servers as a channel for transmitting message packets. The original electronic control units are connected with the bus and can send message packets related to operation of themselves to the bus. The gateway interface is connected with the bus. When the foreign electronic control unit is connected with the gateway interface, the gateway interface can operate to decide whether to transmit the message packets transmitted from the bus to the foreign electronic control unit, and decide whether to transmit the message packets from the foreign electronic control unit to the bus. Through the arrangement of the gateway interface, even though operation of the foreign electronic control unit is abnormal, the vehicle-mounted control area network system can still maintain normal operation.
Description
Technical field
The present invention relates to a kind of network system, particularly relate to a kind of vehicle-mounted control LAN system.
Background technology
Consult Fig. 1, existing vehicle-mounted control LAN system (ControlAreaNetwork, CAN) 1 comprises a bus 11 and multiple electronic control unit (ElectricalControlUnit being connected with this bus 11, ECU) 12, each electronic control unit 12 is connected (not shown) with the sensor of one or more particular state information for sensing automobile again；Such as, control the electronic control unit of engine running, electronic control unit that control instrument shows, electronic control unit etc. for fault diagnosis.
Because this Vehicle Controller LAN system 1 is equipped with quite a lot of information about each electronic control unit 12 and sensor, so generally commercially available foreign electron control unit (After-MarketElectricalControlUnit, AF-ECU) 2 in order to reach specific purpose, such as, obtain the rotary speed information of engine, the bus 11 of this Vehicle Controller LAN system 1 can be connected and therefrom capture message package.But, generally commercially available foreign electron control unit 2 was tested not past the manufacturer producing this Vehicle Controller LAN system 1, when the running of this foreign electron control unit 2 occurs abnormal, such as, send a large amount of message package continuously to this bus 11, may be such that the communication between each original-pack electronic control unit 12 is adversely affected, severe patient is likely to result in the paralysis of this Vehicle Controller LAN system 1, if accidentally, it is also possible to cause the loss of lives and properties, therefore, it is necessary to seek solution.
Summary of the invention
It is an object of the invention to provide a kind of vehicle-mounted control LAN system.
The vehicle-mounted control LAN system of the present invention, is arranged at an automobile, and this automobile tolerable installs a foreign electron control unit additional, and this foreign electron control unit can produce a message package being relevant to self operation.
This vehicle-mounted control LAN system comprise a bus, at least one mate the original-pack electronic control unit of this automobile and a gateway interface.
This bus is as a channel transmitting message package.This original-pack electronic control unit connects this bus, and can send a message package being relevant to self operation to this bus.
This gateway interface connects this bus.When this foreign electron control unit connects this gateway interface, this gateway interface may operate to decide whether to be sent to this message package transmitted in this bus this foreign electron control unit, and decides whether the message package coming from this foreign electron control unit is sent to this bus.
Preferably, vehicle-mounted control LAN system of the present invention, this gateway interface is operable in a locking state or a released state, when this gateway interface operates when this released state, the message package coming from this foreign electron control unit can be sent to this bus by this gateway interface, and the message package transmitted in this bus can be sent to this foreign electron control unit, when this gateway interface operates when this locking state, the message package coming from this foreign electron control unit can not be sent to this bus by this gateway interface, and the message package transmitted in this bus can not be sent to this foreign electron control unit.
It is preferred that vehicle-mounted control LAN system of the present invention, this gateway interface is to enter this locking state via performing an encryption programming, and programs relative to the deciphering that this encryption programs via execution one and enter this released state.
It is preferred that vehicle-mounted control LAN system of the present invention, this configuration of automobiles has a unique vehicle body identifier, and this gateway interface utilizes a key to perform this encryption programming and this deciphering programming, and this key produces according to this vehicle body identifier.
The beneficial effects of the present invention is: by the setting of this gateway interface, this vehicle-mounted control LAN system can be allowed to install this foreign electron control unit additional, even and if the running of this foreign electron control unit occurs abnormal, this vehicle-mounted control LAN system can also maintain normal operation, therefore really can reach the purpose of the present invention.
Accompanying drawing explanation
Other the feature of the present invention and effect, clearly will present in reference to graphic embodiment, wherein:
Fig. 1 is a kind of schematic diagram, illustrates to install additional the situation of a foreign electron control unit at existing vehicle-mounted control LAN system；And
Fig. 2 is a kind of schematic diagram, the embodiment of vehicle-mounted control LAN system of the present invention is described, and installs the situation of this foreign electron control unit additional.
Detailed description of the invention
Before the present invention is described in detail, it shall be noted that in the following description content, similar assembly is to be identically numbered to represent.
Consulting Fig. 2, Fig. 2 and the embodiment of vehicle-mounted control LAN system 3 of the present invention is described, this vehicle-mounted control LAN system 3 is arranged at an automobile and comprises the original-pack electronic control unit 32 of a bus 31, multiple this automobile of coupling, and a gateway interface 33.This automobile can install a foreign electron control unit 2 additional via this gateway interface 33, and this foreign electron control unit 2 can produce a message package being relevant to self operation.
This bus 31 is as a channel transmitting message package.Each original-pack electronic control unit 32 connects this bus 31, and can send one and be relevant to the message package of self operation to this bus 31.
This gateway interface 33 itself is also a kind of electronic control unit, and connects this bus 31, and is operable in a locking state or a released state.When this gateway interface 33 operates when this released state, if this foreign electron control unit 2 connects this gateway interface 33, the message package coming from this foreign electron control unit 2 can be sent to this bus 31 by this gateway interface 33, and the message package transmitted in this bus 31 can be sent to this foreign electron control unit 2；Relatively, when this gateway interface 33 operates when this locking state, if this foreign electron control unit 2 connects this gateway interface 33, this foreign electron control unit 2 can not accept message package from this bus 31 via this gateway interface 33, also can not send package to this bus 31 via this gateway interface 33.
Wherein, this gateway interface 33 is to enter this locking state via performing an encryption programming, and programs relative to the deciphering that this encryption programs via execution one and enter this released state.In the present embodiment, this encryption/deciphering programming is a kind of symmetric key encryption/deciphering programming (Symmetric-KeyProcedure), and the key used is that the unique vehicle body identifier (VehicleIdentifyNumber) to this automobile carries out produced by a kind of AES.
Furthermore, when the depot of this automobile of production is when installing this vehicle-mounted control LAN system 3, this key can be produced according to unique vehicle body identifier of this automobile, and utilize this gateway interface 33 of this double secret key to carry out this encryption to be programmed such that this gateway interface 33 enters this locking state.And after this automobile dispatches from the factory and is sold to a user, if this user has the demand installing this foreign electron control unit 2 additional, because this key is by this depot's keyholed back plate, so this depot need to be passed through this gateway interface 33 is carried out this deciphering programming, so that this gateway interface 33 enters this released state.So, permeable this key of keyholed back plate of this depot carrys out the installing of this foreign electron control unit 2 of keyholed back plate；And through this gateway interface 33, also the package of this vehicle-mounted control LAN system 3 is transmitted and receives by this foreign electron control unit 2 of controllable tube, and then when this foreign electron control unit 2 occurs abnormal, the normal operation of this vehicle-mounted control LAN system 3 can be maintained.
In sum, vehicle-mounted control LAN system 3 of the present invention, setting by this gateway interface 33, this foreign electron control unit 2 can be installed additional, and decide whether the message package transmitted in this bus 31 is sent to this foreign electron control unit 2, and decide whether to be sent to this bus 31 by coming from this foreign electron control unit 2 message package, so, even if the running of this foreign electron control unit 2 occurs abnormal, this vehicle-mounted control LAN system 3 can also maintain normal operation, therefore really can reach the purpose of the present invention.
Claims (4)
1. a vehicle-mounted control LAN system, is arranged at an automobile, and this automobile tolerable installs a foreign electron control unit additional, and this foreign electron control unit can produce a message package being relevant to self operation, it is characterised in that: this system comprises
One bus, as a channel transmitting message package,
At least one mates the original-pack electronic control unit of this automobile, connects this bus, and can send a message package being relevant to self operation to this bus, and
One gateway interface, connects this bus,
Wherein, when this foreign electron control unit connects this gateway interface, this gateway interface may operate to decide whether to be sent to this message package transmitted in this bus this foreign electron control unit, and decides whether the message package coming from this foreign electron control unit is sent to this bus.
2. vehicle-mounted control LAN system according to claim 1, it is characterized in that: this gateway interface is operable in a locking state or a released state, when this gateway interface operates when this released state, the message package coming from this foreign electron control unit can be sent to this bus by this gateway interface, and the message package transmitted in this bus can be sent to this foreign electron control unit, when this gateway interface operates when this locking state, the message package coming from this foreign electron control unit can not be sent to this bus by this gateway interface, and the message package transmitted in this bus can not be sent to this foreign electron control unit.
3. vehicle-mounted control LAN system according to claim 2, it is characterised in that: this gateway interface is to enter this locking state via performing an encryption programming, and programs relative to the deciphering that this encryption programs via execution one and enter this released state.
4. vehicle-mounted control LAN system according to claim 3, it is characterized in that: this configuration of automobiles has a unique vehicle body identifier, this gateway interface utilizes a key to perform this encryption programming and this deciphering programming, and wherein this key produces according to this vehicle body identifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775179.8A CN105763403A (en) | 2014-12-15 | 2014-12-15 | Vehicle-mounted control area network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410775179.8A CN105763403A (en) | 2014-12-15 | 2014-12-15 | Vehicle-mounted control area network system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105763403A true CN105763403A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410775179.8A Pending CN105763403A (en) | 2014-12-15 | 2014-12-15 | Vehicle-mounted control area network system |
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| CN (1) | CN105763403A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107105060A (en) * | 2017-05-27 | 2017-08-29 | 天津恒天新能源汽车研究院有限公司 | A kind of method for realizing electric automobile information security |
| CN109714171A (en) * | 2018-12-27 | 2019-05-03 | 百度在线网络技术（北京）有限公司 | Safety protecting method, device, equipment and medium |
| CN110557326A (en) * | 2018-05-30 | 2019-12-10 | 陕西重型汽车有限公司 | vehicle-mounted intelligent remote gateway |
| CN112383506A (en) * | 2020-10-13 | 2021-02-19 | 浙江吉利控股集团有限公司 | Network control device, method, equipment and medium of non-original module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107105060A (en) * | 2017-05-27 | 2017-08-29 | 天津恒天新能源汽车研究院有限公司 | A kind of method for realizing electric automobile information security |
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| CN110557326A (en) * | 2018-05-30 | 2019-12-10 | 陕西重型汽车有限公司 | vehicle-mounted intelligent remote gateway |
| CN110557326B (en) * | 2018-05-30 | 2021-10-08 | 陕西重型汽车有限公司 | Vehicle-mounted intelligent remote gateway |
| CN109714171A (en) * | 2018-12-27 | 2019-05-03 | 百度在线网络技术（北京）有限公司 | Safety protecting method, device, equipment and medium |
| CN112383506A (en) * | 2020-10-13 | 2021-02-19 | 浙江吉利控股集团有限公司 | Network control device, method, equipment and medium of non-original module |
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Application publication date: 20160713 |