CN202634478U - Vehicle-mounted local area network - Google Patents

Vehicle-mounted local area network Download PDF

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Publication number
CN202634478U
CN202634478U CN 201120520177 CN201120520177U CN202634478U CN 202634478 U CN202634478 U CN 202634478U CN 201120520177 CN201120520177 CN 201120520177 CN 201120520177 U CN201120520177 U CN 201120520177U CN 202634478 U CN202634478 U CN 202634478U
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China
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bus
controller
car
vehicle
local area
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CN 201120520177
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Inventor
芦晓媛
赵澎
徐梅
付金勇
赵一帆
李阳
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Beiqi Foton Motor Co Ltd
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Beiqi Foton Motor Co Ltd
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Abstract

The utility model discloses a vehicle-mounted local area network, which comprises a vehicle body controller, an instrument, a vehicle door controller, a running recorder, a tire pressure monitor system, an engine management system and a transmission control unit, wherein the vehicle body controller comprises a first CAN bus and a second CAN bus; the first CAN bus has the same kbps as the second CAN bus; the instrument is connected with the vehicle body controller and communicates with the vehicle body controller via the first CAN bus; the vehicle door controller, the running recorder and the tire pressure monitor system are respectively connected with the instrument; the engine management system and the transmission control unit are respectively connected with the vehicle body controller and communicate with the vehicle body controller via the second CAN bus. According to the vehicle-mounted local area network disclosed by the utility model, as the vehicle body bus and the power bus are separated and the same kbps is adopted, the kbps conversion does not need an extra gateway and different configuration requirements can be met. In addition, the vehicle-mounted local area network is flexible in configuration and strong in expansibility.

Description

A kind of vehicle-mounted local area network (LAN)
Technical field
The utility model relates to field of automobile, particularly a kind of vehicle-mounted local area network (LAN).
Background technology
The CAN network of car load can be divided into power bus (P-CAN) and Vehicle Body Bus (I-CAN) two parts on the basis of following SAE J1939 agreement.The traditional power bus (P-CAN) and the speed of Vehicle Body Bus (I-CAN) need be carried out rate transition through gateway, and the speed of power bus (P-CAN) is 250Kbps usually, and the speed of Vehicle Body Bus (I-CAN) is 125Kbps.Traditional pass through the adjustment that gateway carries out the speed of power bus (P-CAN) and Vehicle Body Bus (I-CAN), body harness is more, and then causes cost higher.And expansion is not high, influences the development rate of car load.
The utility model content
The purpose of the utility model is intended to solve at least one of above-mentioned technological deficiency, proposes a kind of vehicle-mounted local area network (LAN) especially, and this vehicle-mounted local area network (LAN) can separate Vehicle Body Bus and power bus, and flexible configuration and expansion are strong.
For achieving the above object; The embodiment of the utility model proposes a kind of vehicle-mounted local area network (LAN), comprising: car body controller, said car body controller comprise a CAN bus and the 2nd CAN bus; Wherein, the speed of a said CAN bus is identical with the speed of said the 2nd CAN bus; Instrument, said instrument links to each other with said car body controller, and communicates through a said CAN bus and said car body controller; The car door controller, Tachographs and the tire pressure monitoring system that link to each other with said instrument respectively; Wherein, said instrument, said car door controller, said Tachographs and said tire pressure monitoring system communicate through a said CAN bus and said car body controller respectively; With engine management system and gearbox control system, wherein, said engine management system links to each other with said car body controller respectively with gearbox control system, and communicates through said the 2nd CAN bus and said car body controller.
According to the vehicle-mounted local area network (LAN) of the utility model embodiment, Vehicle Body Bus and power bus are separated, and adopt identical speed, do not need extra gateway to carry out rate transition, thereby can satisfy the requirements of different configurations.In addition, vehicle-mounted local flexible configuration, the expansion of the utility model are strong.
In an embodiment of the utility model, the speed of the speed of a said CAN bus and said the 2nd CAN bus is 250Kbps.
In an embodiment of the utility model, anti-sideslip control system, anti-lock braking system and the air bag of car load link to each other with said car body controller respectively, and communicate through said the 2nd CAN bus and said car body controller.
In an embodiment of the utility model, the engine theftproof system of said car load, electronic control air suspension, retarder and inline diagnosis interface link to each other with said car body controller respectively, and communicate through said the 2nd CAN bus and said car body controller.
In an embodiment of the utility model, said car body controller comprises lamp light control system, and a said CAN bus links to each other with said lamp light control system respectively with said the 2nd CAN bus.
In an embodiment of the utility model, said car body controller is provided with gateway interface, and said gateway interface and trailer gateway carry out and connect.
Thus, through on car body controller, reserving gateway interface, thereby when needs are expanded the trailer function, can and receive the gateway interface of reservation, realize adorning on the trailer the trailer gateway.
Aspect that the utility model is additional and advantage part in the following description provide, and part will become obviously from the following description, or recognize through the practice of the utility model.
Description of drawings
Above-mentioned and/or additional aspect of the utility model and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is the sketch map according to the vehicle-mounted local area network (LAN) of the utility model embodiment;
Fig. 2 is the sketch map of the power bus of the vehicle-mounted local area network (LAN) of built-in resistor not in the Engine ECU;
Fig. 3 is the sketch map of power bus of the vehicle-mounted local area network (LAN) of built-in resistor in the Engine ECU; With
Fig. 4 is the sketch map of the Vehicle Body Bus of instrument CMIC built-in resistor.
Embodiment
Describe the embodiment of the utility model below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the utility model, and can not be interpreted as restriction the utility model.
Hereinafter the different structure that provides many various embodiment or example to be used for realizing the utility model disclosed.In order to simplify disclosing of the utility model, hereinafter the parts and the setting of specific examples are described.Certainly, they only are example, and purpose does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and purpose clearly, itself not indicate the relation between various embodiment that discuss of institute and/or the setting.In addition, various specific technology and examples of material that the utility model provides, but those of ordinary skills can recognize the property of can be applicable to of other technologies and/or the use of other materials.In addition; First characteristic of below describing second characteristic it " on " structure can comprise that first and second characteristics form the embodiment of direct contact; Can comprise that also additional features is formed on the embodiment between first and second characteristics, such first and second characteristics possibly not be direct contacts.
In the description of the utility model, need to prove, unless otherwise prescribed and limit; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
With reference to following description and accompanying drawing, with these and other aspects of the embodiment that knows the utility model.In these descriptions and accompanying drawing; Some specific implementations among the embodiment of the utility model are specifically disclosed; Represent to implement some modes of principle of the embodiment of the utility model, but the scope of embodiment that should be appreciated that the utility model is not limited.On the contrary, the embodiment of the utility model comprises and falls into appended spirit that adds the right claim and all changes, modification and the equivalent in the intension scope.
The CAN network of car load can be divided into power bus (P-CAN) and Vehicle Body Bus (I-CAN) two parts on the basis of following SAE J1939 agreement.The utility model separately designs above-mentioned two kinds of buses, and need not pass through the gateway switching rate.
The sketch map of describing according to the vehicle-mounted local area network (LAN) of the utility model embodiment with reference to figure 1 below.Wherein, the vehicle-mounted local area network (LAN) of the utility model embodiment is applicable to heavy truck-type.
As shown in Figure 1; The vehicle-mounted local area network (LAN) of the utility model embodiment comprises car body controller CBCU1, instrument CMIC4, car door controller, Tachographs VDR6, tire pressure monitoring system (Tire Pressure Monitor System; TPMS) 8, engine management system (Engine Management System; EMS) 9 and gearbox control system (Transmission Control Unit, TCU) 10.Wherein, car body controller CBCU1 comprises a CAN bus 2 and the 2nd CAN bus 3, and wherein a CAN bus 2 can be Vehicle Body Bus (I-CAN), and the 2nd CAN bus 3 is power bus (P-CAN).In an example of the utility model, a CAN bus 2 is identical with the speed of the 2nd CAN bus 3, is 250Kbps.
Instrument CMIC4 links to each other with car body controller CBCU1, communicates with car body controller CBCU1 through a CAN bus 2.
The car door controller comprises driver side car door controller DCM5 and passenger side car door controller PCM7, and wherein, driver side car door controller DCM5 is used to control the car door of driver side, and passenger side car door controller PCM7 is used to control the car door of passenger side.
Driver side car door controller DCM5, passenger side car door controller PCM7, Tachographs VDR6 link to each other with instrument CMIC4 respectively with tire pressure monitoring system TPMS8, and communicate with car body controller CBCU1 through a CAN bus 2.
The one CAN bus 2 is that Vehicle Body Bus (I-CAN) mainly realizes controls such as vehicle body light part, door and window, windscreen wiper and lock, and accomplishes the disclosed demonstration of car load through combination instrument.
Power bus (P-CAN) is mainly used in the dynamic Control of car load, and dynamic Control is the core of car load network system.Wherein, engine management system EMS9 and gearbox control system TCU10 are the critical components of dynamical system.Need carry out sharing and exchanges data of partial information between engine management system EMS9 and the gearbox control system TCU10.
Engine management system EMS9 links to each other with car body controller CBCU1 respectively with gearbox control system TCU10, and communicates with car body controller CBCU1 through the 2nd CAN bus 3, promptly communicates through power bus (P-CAN).
Except above-mentioned engine management system EMS9 and gearbox control system TCU10; Anti-sideslip control system (the Acceleration Slip Regulation of car load; ASR) 11, anti-lock braking system (Anti-locked Braking System; ABS) 12, electric stabilizing system ESP13, the GPRS14 of any wireless network services system, air bag (Supplementary Restraint System; SRS), engine theftproof system IMMO17, electronic control air suspension (electroni-controlled air suspension; ECAS) 16, retarder RET18, inline diagnosis interface DLC19 and (the Selective Catalytic Reduction of selective reduction system; SCR) 15 link to each other with car body controller CBCU1 respectively, and communicate with car body controller CBCU1 through the 2nd CAN bus 3, promptly communicate through power bus (P-CAN).Above-mentioned each safety system is had relatively high expectations to the real-time of car load, carries out data communication with engine management system EMS9 and gearbox control system TCU10 in real time.
In an embodiment of the utility model, car body controller CBCU1 comprises lamp light control system.The one CAN bus 2 links to each other with lamp light control system respectively with the 2nd CAN bus 3.Wherein, lamp light control system can be controlled the lighting level of lighting system 21.In addition, car body controller 1 also links to each other with switch 22 and transducer 23.
In an embodiment of the utility model, be reserved with gateway interface 20 on the car body controller CBCU1.When car load need be expanded the trailer function, gateway interface of reserving and trailer gateway are carried out and connect, thus the purpose of adorning on the realization trailer.
The vehicle-mounted local area network (LAN) that the utility model embodiment provides is applicable in the Engine ECU built-in resistor and the vehicle of built-in resistor, instrument CMIC built-in resistor not.
Fig. 2 is the P-CAN bus network sketch map of built-in resistor not in the engine management system EMS9.Wherein, the SCR15 of selective reduction system comprises urea pump 151 and nitrogen oxide sensor 152.Wherein, the CAN bus can be used multiple physical medium, for example twisted-pair feeder, optical fiber etc.The CAN bus signals uses differential voltage to transmit, and its corresponding differential signal bus is respectively CAN_H and CAN_L.As can be seen from the figure, between the bus wire harness end CAN_H of engine management system EMS9 and CAN_L, connect a resistance.
(On-Board Diagnostics OBD) also connects a resistance between 19 bus wire harness end CAN_H and the CAN_L, and other control units are built-in resistor not at the inline diagnosis interface.The resistance of the resistance of above-mentioned connection is identical, can be 120 ohm.
Fig. 3 is the P-CAN bus network sketch map of engine management system EMS9 built-in resistor.As can be seen from the figure, the built-in resistance in the inside of engine management system EMS9 also connects a resistance between the bus wire harness end CAN_H of inline diagnosis interface 19 and CAN_L, and other control units built-in resistor not.The resistance of above-mentioned connection and built-in resistance is identical, can be 120 ohm.
Fig. 4 is for being built-in with the I-CAN bus network sketch map of resistance among the instrument CMIC4.As can be seen from the figure, be built-in with resistance in car body controller CBCU1 inside, instrument CMIC4 is set to a built-in resistance through wire jumper, and Tachographs VDR6 is set to not built-in resistor through wire jumper, and other control units are built-in resistor not.The resistance of above-mentioned connection and built-in resistance is identical, can be 120 ohm.
Vehicle-mounted local area network (LAN) according to the utility model embodiment; Can Vehicle Body Bus and power bus be separated, and two identical speed of buses employing, thereby do not need extra gateway to carry out rate transition; Thereby satisfy different configuration requirements, configuration flexibility height and expansion are strong.And, adopt the vehicle-mounted local area network (LAN) of the utility model embodiment can reach the purpose that reduces body harness, practices thrift cost, raising product development speed and modification of vehicle development efficiency.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained among at least one embodiment or example of the utility model.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described the embodiment of the utility model; For those of ordinary skill in the art; Be appreciated that under the situation of principle that does not break away from the utility model and spirit and can carry out multiple variation, modification, replacement and modification that the scope of the utility model is accompanying claims and be equal to and limit to these embodiment.

Claims (6)

1. a vehicle-mounted local area network (LAN) is characterized in that, comprising:
Car body controller, said car body controller comprise a CAN bus and the 2nd CAN bus, and wherein, the speed of a said CAN bus is identical with the speed of said the 2nd CAN bus;
Instrument, said instrument links to each other with said car body controller, and communicates through a said CAN bus and said car body controller;
The car door controller, Tachographs and the tire pressure monitoring system that link to each other with said instrument respectively; Wherein, said instrument, said car door controller, said Tachographs and said tire pressure monitoring system communicate through a said CAN bus and said car body controller respectively; With
Engine management system and gearbox control system, wherein, said engine management system links to each other with said car body controller respectively with gearbox control system, and communicates through said the 2nd CAN bus and said car body controller.
2. vehicle-mounted local area network (LAN) as claimed in claim 1 is characterized in that, the speed of the speed of a said CAN bus and said the 2nd CAN bus is 250Kbps.
3. vehicle-mounted local area network (LAN) as claimed in claim 1 is characterized in that, anti-sideslip control system, anti-lock braking system and the air bag of car load link to each other with said car body controller respectively, and communicate through said the 2nd CAN bus and said car body controller.
4. vehicle-mounted local area network (LAN) as claimed in claim 1; It is characterized in that; The engine theftproof system of said car load, electronic control air suspension, retarder and inline diagnosis interface link to each other with said car body controller respectively, and communicate through said the 2nd CAN bus and said car body controller.
5. vehicle-mounted local area network (LAN) as claimed in claim 1 is characterized in that said car body controller comprises lamp light control system, and a said CAN bus links to each other with said lamp light control system respectively with said the 2nd CAN bus.
6. vehicle-mounted local area network (LAN) as claimed in claim 1 is characterized in that said car body controller is provided with gateway interface, and said gateway interface and trailer gateway carry out and connect.
CN 201120520177 2011-12-13 2011-12-13 Vehicle-mounted local area network Active CN202634478U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103576593A (en) * 2013-11-22 2014-02-12 安徽江淮汽车股份有限公司 Vehicle body controller for commercial vehicle system and control method
CN104391502A (en) * 2014-11-27 2015-03-04 长城汽车股份有限公司 Car diagnosis system and car
CN104852947A (en) * 2014-03-18 2015-08-19 北汽福田汽车股份有限公司 CAN network topology structure of vehicle and vehicle using same
CN104914849A (en) * 2015-05-12 2015-09-16 安徽江淮汽车股份有限公司 Fault recording device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103576593A (en) * 2013-11-22 2014-02-12 安徽江淮汽车股份有限公司 Vehicle body controller for commercial vehicle system and control method
CN104852947A (en) * 2014-03-18 2015-08-19 北汽福田汽车股份有限公司 CAN network topology structure of vehicle and vehicle using same
CN104391502A (en) * 2014-11-27 2015-03-04 长城汽车股份有限公司 Car diagnosis system and car
CN104391502B (en) * 2014-11-27 2017-10-27 长城汽车股份有限公司 Automotive diagnostic system and automobile
CN104914849A (en) * 2015-05-12 2015-09-16 安徽江淮汽车股份有限公司 Fault recording device and method

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