CN111352409A - Serial data bus communication control system and control method for hybrid electric vehicle - Google Patents
Serial data bus communication control system and control method for hybrid electric vehicle Download PDFInfo
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- CN111352409A CN111352409A CN202010323816.3A CN202010323816A CN111352409A CN 111352409 A CN111352409 A CN 111352409A CN 202010323816 A CN202010323816 A CN 202010323816A CN 111352409 A CN111352409 A CN 111352409A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/62—Hybrid vehicles
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Abstract
The invention discloses a serial data bus communication control system of a hybrid electric vehicle, wherein a vehicle control unit of the system integrates gateway functions and is used for realizing signal routing and message routing between a power network segment and a hybrid electric network segment and on-line monitoring of all communication nodes on the power network segment and the hybrid electric network segment; the combination instrument integrates gateway function, which is used for realizing signal routing and message routing between the power network segment and the vehicle body network segment, and on-line monitoring of all communication nodes on the power network segment and the vehicle body network segment; the T-box is accessed into the vehicle body network segment through the vehicle body network segment communication end, and the T-box is accessed into the hybrid power network segment through the hybrid power communication end; the power network section, the vehicle body network section and the hybrid power network section are all connected to the vehicle diagnosis interface. The invention can ensure the real-time acquisition of new energy data and the real-time performance and reliability of network signal transmission.
Description
Technical Field
The invention belongs to the technical field of automobile electronic systems, and particularly relates to a serial data bus communication control system and a serial data bus communication control method for a hybrid electric vehicle.
Technical Field
Along with increasingly strict social requirements on energy conservation, environmental protection and safety of automobiles and increasingly improved requirements on riding comfort and driving convenience of people, electronization, informatization, networking and intellectualization become important embodiments of the advancement of automobile products. The traditional electrical components on modern automobiles are gradually changed into electronic control, electronic systems on the automobiles are more and more, in the electronic equipment, a large amount of information needs to be shared and mutually transmitted, the traditional wiring mode is non-bus type, and signals among controllers in a controller area are all hard-wire signals; if all are hard wire signals, a large amount of controller interfaces and wire harnesses are needed, the wire harnesses of the automobile body are huge and complex according to the traditional wiring mode, the installation space is in short supply, the operation reliability is reduced, the fault maintenance difficulty is increased, and the cost of a linear speed system is high.
Disclosure of Invention
The invention aims to solve the technical problems and provides a serial data bus communication control system and a serial data bus communication control method for a hybrid electric vehicle.
In order to achieve the purpose, the serial data bus communication control system of the hybrid electric vehicle is characterized in that: the system comprises a power network segment, a vehicle body network segment, a hybrid network segment, a combination instrument, a T-box and a vehicle control unit, wherein the vehicle control unit integrates gateway functions and is used for realizing signal routing and message routing between the power network segment and the hybrid network segment and on-line monitoring of all communication nodes on the power network segment and the hybrid network segment;
the combination instrument integrates gateway functions and is used for realizing signal routing and message routing between the power network segment and the vehicle body network segment and on-line monitoring of all communication nodes on the power network segment and the vehicle body network segment;
the T-box is accessed into the vehicle body network segment through the vehicle body network segment communication end, and the T-box is accessed into the hybrid power network segment through the hybrid power communication end;
and the power network segment, the vehicle body network segment and the hybrid power network segment are all connected to a vehicle diagnosis interface.
The invention adopts a serial data bus communication control structure of a power network segment, a vehicle body network segment, a hybrid power network segment and a 2-way LIN bus, compared with the traditional wiring mode, the invention can greatly reduce the complexity of wiring harness connection, provide the reliability of automobile signal transmission, reduce the maintenance difficulty of wiring harness faults and the manufacturing cost of a wiring harness system, and in addition, the network load rate of each network segment can be reduced and the real-time property of network signals can be improved by adopting the multi-network segment structure.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein, 1-power network section, 1.1-engine management system, 1.2-electronic stabilizing system, 1.3-corner sensor, 1.4-electric power-assisted steering system, 1.5-automatic parking controller, 1.6-self-adaptive cruise controller, 1.7-electronic gear-shifting controller, 1.8-low speed prompting sound system, 2-vehicle network section, 2.1-vehicle controller, 2.2-air conditioner controller, 2.3-multifunctional switch, 2.4-centralized control steering wheel, 2.5-surround view system, 2.6-power supply backup management device, 2.7-power battery cooling controller, 2.8-MP 5, 2.9-tire pressure monitoring system, 2.10-electric back door controller, 2.11-intelligent access system, 2.12-seat controller, 3-hybrid power network section, 3.1-power battery management system, 3.2-P gear controller, 3.3-generator controller, 3.4-electric back door controller, 3.5-vehicle-mounted electric water pump controller, 3.6-electric water pump controller, 4-combination meter, 5-T-box, 6-vehicle controller, 7-left front door anti-pinch motor, 7.1-right front door anti-pinch motor, 7.2-left rear door anti-pinch motor, 7.3-right rear door anti-pinch motor, 7.4-skylight motor, 7.5-rainfall illumination sensor, 7.6-left front door atmosphere lamp, 7.7-right front door atmosphere lamp, 7.8-left instrument panel atmosphere lamp, 7.9-right instrument panel atmosphere lamp, 8-electronic steering column lock, 8.1-foot kick sensor, 9-vehicle diagnosis interface.
Detailed Description
The invention is described in further detail below with reference to the following figures and examples:
the serial data bus communication control system of the hybrid electric vehicle shown in fig. 1 is characterized in that: the intelligent vehicle control system comprises a power network segment 1(P-CAN), a vehicle body network segment 2(B-CAN), a hybrid power network segment 3(H-CAN), a combination instrument 4(IC), a T-box5(telematics BOX) and a vehicle control unit 6(VCU), wherein the vehicle control unit 6 integrates gateway functions and is used for realizing signal routing and message routing between the power network segment 1 and the hybrid power network segment 3 and online monitoring of all communication nodes on the power network segment 1 and the hybrid power network segment 3, and the vehicle control unit 6 judges whether network nodes are online or not by receiving key messages sent by each controller on the power network segment 1 and the hybrid power network segment 3;
the combination instrument 4 integrates gateway functions and is used for realizing signal routing and message routing between the power network segment 1 and the vehicle body network segment 2 and online monitoring of all communication nodes on the power network segment 1 and the vehicle body network segment 2, and the instrument judges whether network nodes are online or not by receiving key messages sent by each controller on the power network segment and the vehicle body network segment;
the T-box5 is connected to the vehicle body network segment 2 through a vehicle body network segment communication end (CAN interface), the T-box5 is connected to the hybrid power network segment 3 through a hybrid power communication end, and the T-box CAN receive network signals on the vehicle body network segment 2 and the power network segment 1 and upload the network signals to a cloud for big data analysis; in addition, the T-box5 also receives a vehicle control instruction sent from the cloud, so that remote viewer functions such as remote control of vehicle starting, remote control of a skylight and remote control of vehicle windows are realized; if only one network segment is connected, for example, only the vehicle body network segment is connected, if network signals on the hybrid power network segment are to be received, the signals are forwarded through the vehicle control unit 6 and the instrument, the network load rates of the power network segment 1 and the vehicle body network segment 2 are increased, and the processing capacity of the vehicle control unit 6 and the instrument is also increased;
the power network section 1, the vehicle body network section 2 and the hybrid power network section 3 are all connected to a vehicle diagnosis interface 9, IC and VCU do not need to be forwarded first (diagnosis is carried out on EMS (engine management system), if the power network section is not connected to a diagnosis port, a diagnosis request sent by a diagnosis instrument to the EMS needs to be forwarded through the instrument first, the EMS CAN receive the diagnosis request, and a diagnosis response sent by the EMS needs to be forwarded to the diagnosis instrument through the instrument), so that diagnosis of all CAN controllers of a vehicle is facilitated. The access vehicle diagnosis interface 9 is used for diagnosing the network node, such as reading a fault code of the network node, reading a VIN code stored by the public of the network node, and the like; and is also used for performing software flashing on the network node.
In the technical scheme, the signal routing is mainly used for forwarding signals with low signal delay requirements, such as signals which need to be displayed by a combination instrument in a power network segment and a chassis network segment; the message routing is mainly used for forwarding signals with higher signal delay requirements, such as collision signals, vehicle speed signals and the like.
In the technical scheme, CAN controllers of a power network segment 1(P-CAN), a vehicle body network segment 2(B-CAN) and a hybrid power network segment 3(H-CAN) all follow the CAN communication protocol of ISO 11898; the power network segment 1 is mainly used for transmitting network signals of a power system and a chassis system such as an engine control unit, a gearbox control unit, an electronic stability system, an electric power steering system and the like; the vehicle body network segment 2 is mainly used for transmitting vehicle body control related network signals such as a vehicle body controller, an air conditioner controller, tire pressure monitoring, an electric back door and the like; the hybrid power network segment is mainly used for transmitting network signals related to a power battery management system, a motor controller, a vehicle-mounted charger and the like and a new energy power system.
In the technical scheme, network nodes of the power network segment 1 are connected with power network segment communication ends of an engine management system 1.1(EMS), an electronic stability system 1.2(ESC), a corner sensor 1.3(SAS), an electric power steering system 1.4(EPS), an automatic parking controller 1.5(APA), an adaptive cruise controller 1.6(ACC) and a vehicle control unit 6(VCU), an electronic parking function is integrated in the electronic stability system 1.2, the equipment adopts a CAN communication mode, and the equipment is used for transmitting information of vehicle power and chassis functions;
a vehicle body controller 2.1(BCM), an air conditioner controller 2.2(AC), a multifunctional switch 2.3(MFS), a centralized control steering wheel 2.4(SCC), an all-round view system 2.5(AVM), a power supply backup management device 2.6(BPM), a power battery cooling controller 2.7(BCU), a T-box5 and a vehicle body network segment communication end of a combination instrument 4 are connected to network nodes of the vehicle body network segment 2, the devices adopt a CAN communication mode, and the network node devices are all related to vehicle body control;
and a network node of the hybrid power network segment 3 is connected with a hybrid power communication end of a vehicle control unit 6, a power battery management system 3.1(BMS), a P gear controller 3.2(PGU), a generator controller 3.3(GCU), a motor controller 3.4(MCU), a vehicle-mounted charger 3.5(OBC), an electric water pump cooling controller 3.6(EWP) and a T-box 5. The equipment adopts a CAN communication mode, and the network node equipment is related to new energy.
In the above technical solution, the network node of the power network segment 1 is further connected with an electronic shift controller 1.7(ESM), a low-speed warning sound system 1.8(AVAS), and a power network segment communication end of the combination meter 4. The network nodes are added into a power network segment, but not a hybrid power network segment or a vehicle body network segment, and mainly the network nodes mainly receive signals sent by the network nodes on the power network segment; the signals sent by the network nodes are mostly received by the network nodes on the power network segment
In the above technical solution, the network nodes of the vehicle body segment 2 are further connected with vehicle body segment communication terminals of an MP52.8, a tire pressure monitoring system 2.9(TPMS), an electric back door controller 2.10(POT), a seat controller 2.12(ADP), and an intelligent entry system 2.11 (PEPS). The network node devices are all related to vehicle body function control;
in the technical scheme, in order to prevent signal reflection, two 120 omega terminal resistors are arranged in the power network segment 1, the vehicle body network segment 2 and the hybrid power network segment 3, and the terminal resistors of the power network segment 1 are arranged in the combination instrument 4 and the engine management system 1.1; the terminal resistors of the car body network segment 2 are arranged in the combination instrument 4 and the car body controller 2.1 (each network segment must have 2 terminal resistors, and the terminal resistors are distributed on two network nodes which are farthest away on the network segment wire harness as much as possible, generally in a CAN transceiver peripheral circuit of the controller); and the terminal resistors of the hybrid power network segment 3 are arranged in the vehicle control unit 6 and the power battery management system 3.1. The 20 omega termination resistors are all arranged in a CAN transceiver peripheral circuit of the controller. Since various transmission lines have characteristic impedance (about 120 Ω in terms of Twisted Pair), when a signal is transmitted to a terminal in the transmission line, if the terminal impedance and the characteristic impedance are different, reflection is caused to distort (recess or protrusion) the waveform of the signal, so that the above-mentioned scheme can prevent signal reflection.
In the above technical solution, the vehicle body controller 2.1 has 1 LIN interface, and the LIN node of the vehicle body controller 2.1 is connected with the LIN communication end of the left front door anti-pinch motor 7(FLW), the right front door anti-pinch motor 7.1(FRW), the left rear door anti-pinch motor 7.2(RLW), the right rear door anti-pinch motor 7.3(RRW), the skylight motor 7.4(Roof), the rainfall illumination sensor 7.5(RLS), the left front door atmosphere lamp 7.6(AL1), the right front door atmosphere lamp 7.7(AL2), the left instrument panel atmosphere lamp 7.8(AL3), and the right instrument panel atmosphere lamp 7.9(AL4), and communicates by using the LIN bus.
In the above technical solution, the intelligent entry system 2.11 has 1 LIN interface, and an LIN node of the intelligent entry system 2.11 is connected with an electronic steering column lock 8(ESCL) and a Kick Sensor 8.1 (kisk Sensor), and communicates by using an LIN bus
In the technical scheme, the gateway of the vehicle control unit 6 realizes signal routing and message routing between the power network segment 1 and the hybrid power network segment 3 and online monitoring of all communication nodes on the power network segment 1 and the hybrid power network segment 3 through application software of the vehicle control unit;
in the technical scheme, the gateway of the combination instrument 4 realizes signal routing and message routing between the power network segment 1 and the vehicle body network segment 2 and online monitoring of all communication nodes on the power network segment 1 and the vehicle body network segment 2 through application software of a vehicle control unit;
the T-box5 is connected to the vehicle body network segment 2 through a vehicle body network segment communication end, the T-box5 is connected to the hybrid power network segment 3 through a hybrid power communication end, and the T-box5 is used for acquiring signals (including signals of the engine speed, the current and voltage of all single batteries of the power battery, the motor speed and the like) meeting the GB/T27930 requirements on the vehicle body network segment 2 and the hybrid power network segment 3. Meanwhile, the load of transmitting VCU and IC signals CAN be reduced, the network load rate of P-CAN and B-CAN is reduced, and the real-time performance of the network is improved; if the T-box is only connected to the vehicle body network segment, signals on the hybrid power network segment need to be forwarded to the power network segment through the vehicle control unit, then the signals are forwarded to the vehicle body network segment from the power network segment through the combination instrument, and the signal delay is increased through the forwarding of the two gateways.
In the technical scheme, the power network segment 1, the vehicle body network segment 2 and the hybrid power network segment 3 all adopt high-speed CAN buses, and the communication speed is 500 Kbit/s.
The communication rate of the LIN bus LIN of the vehicle body controller and the LIN bus LIN of the intelligent entry system PEPS is 19.2 Kbit/s.
The invention divides 29 CAN nodes on the vehicle into three network segment power network segment 1, vehicle body network segment 2 and hybrid power network segment 3, which CAN ensure the real-time and reliability of network signals; the combination instrument 4 and the vehicle control unit 6 integrate the gateway function, so that the cost increase caused by adopting an independent gateway can be saved, and the combination instrument needs to receive and display signals on a vehicle body and a power network section; the vehicle control unit needs to receive signals of a power network segment and a hybrid network segment, and implements control over a power battery and a motor controller and control over an EMS (energy management system); the vehicle control unit is used as a gateway, can directly receive signals of two network segments, and has better signal real-time property; the T-box is provided with two CAN interfaces, so that data acquisition of finished automobile signals and new energy signals (signals specified by GB/T27930) CAN be guaranteed, and the network load rate cannot be increased.
A serial data bus communication control method for a hybrid electric vehicle is characterized by comprising the following steps:
step 1: the gateway of the vehicle control unit 6 realizes signal routing and message routing between the power network section 1 and the hybrid power network section 3 and online monitoring of all communication nodes on the power network section 1 and the hybrid power network section 3;
step 2: the gateway of the combination instrument 4 realizes the signal routing and the message routing between the power network section 1 and the vehicle body network section 2 and the online monitoring of all communication nodes on the power network section 1 and the vehicle body network section 2;
and step 3: the T-box5 is accessed into the vehicle body network segment 2 through the vehicle body network segment communication end, the T-box5 is accessed into the hybrid power network segment 3 through the hybrid power communication end, and signal acquisition meeting the GB/T27930 requirement is carried out;
and 4, step 4: the power network segment 1, the vehicle body network segment 2 and the hybrid power network segment 3 are all connected to a vehicle diagnosis interface to diagnose all CAN controllers on the power network segment 1, the vehicle body network segment 2 and the hybrid power network segment 3, and a diagnosis instrument or an external diagnosis device CAN diagnose controllers in a vehicle through the diagnosis interface, such as reading fault codes, flashing software on the controllers and the like.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. The utility model provides a serial data bus communication control system of hybrid vehicle which characterized in that: the vehicle-mounted intelligent monitoring system comprises a power network segment (1), a vehicle body network segment (2), a hybrid power network segment (3), a combination instrument (4), a T-box (5) and a vehicle control unit (6), wherein the vehicle control unit (6) integrates gateway functions and is used for realizing signal routing and message routing between the power network segment (1) and the hybrid power network segment (3) and online monitoring of all communication nodes on the power network segment (1) and the hybrid power network segment (3);
the combination instrument (4) integrates gateway functions and is used for realizing signal routing and message routing between the power network segment (1) and the vehicle body network segment (2) and on-line monitoring of all communication nodes on the power network segment (1) and the vehicle body network segment (2);
the T-box (5) is accessed into the vehicle body network segment (2) through a vehicle body network segment communication end, and the T-box (5) is accessed into the hybrid power network segment (3) through a hybrid power communication end;
the power network segment (1), the vehicle body network segment (2) and the hybrid power network segment (3) are all connected to a vehicle diagnosis interface (9).
2. The serial data bus communication control system of the hybrid electric vehicle according to claim 1, characterized in that: the network nodes of the power network section (1) are connected with power network section communication ends of an engine management system (1.1), an electronic stabilizing system (1.2), a corner sensor (1.3), an electric power steering system (1.4), an automatic parking controller (1.5), an adaptive cruise controller (1.6) and a whole vehicle controller (6);
a network node of the vehicle body network segment (2) is connected with a vehicle body controller (2.1), an air conditioner controller (2.2), a multifunctional switch (2.3), a centralized control type steering wheel (2.4), a look-around system (2.5), a power supply backup management device (2.6), a power battery cooling controller (2.7), a T-box (5) and a vehicle body network segment communication end of a combination instrument (4);
and a network node of the hybrid power network segment (3) is connected with a hybrid power communication end of a vehicle control unit (6), a power battery management system (3.1), a P-gear controller (3.2), a generator controller (3.3), a motor controller (3.4), a vehicle-mounted charger (3.5), an electric water pump cooling controller (3.6) and a T-box (5).
3. The serial data bus communication control system of the hybrid electric vehicle according to claim 2, characterized in that: and the network node of the power network segment (1) is also connected with an electronic gear shifting controller (1.7), a low-speed prompting sound system (1.8) and a power network segment communication end of the combination instrument (4).
4. The serial data bus communication control system of the hybrid electric vehicle according to claim 2, characterized in that: and the network nodes of the vehicle body network segment (2) are also connected with vehicle body network segment communication ends of an MP5(2.8), a tire pressure monitoring system (2.9), an electric back door controller (2.10), a seat controller (2.12) and an intelligent access system (2.11).
5. The serial data bus communication control system of the hybrid electric vehicle according to claim 2, characterized in that: two terminal resistors are arranged in the power network segment (1), the vehicle body network segment (2) and the hybrid power network segment (3), and the terminal resistors of the power network segment (1) are arranged in the combination instrument (4) and a CAN transceiver peripheral circuit of the engine management system (1.1); the terminal resistor of the vehicle body network segment (2) is arranged in the peripheral circuit of the CAN transceiver of the combination instrument (4) and the vehicle body controller (2.1); and the terminal resistor of the hybrid power network segment (3) is arranged in the CAN transceiver peripheral circuits of the vehicle control unit (6) and the power battery management system (3.1).
6. The serial data bus communication control system of the hybrid electric vehicle according to claim 2, characterized in that: automobile body controller (2.1) has 1 way LIN interface, is connected with the LIN communication end that motor (7) are prevented pressing from both sides by the left front door, motor (7.1) are prevented pressing from both sides by the right front door, motor (7.2) are prevented pressing from both sides by the left back door, motor (7.3) are prevented pressing from both sides by the right back door, skylight motor (7.4), rainfall light shines sensor (7.5), left front door atmosphere lamp (7.6), right front door atmosphere lamp (7.7), left instrument board atmosphere lamp (7.8), right instrument board atmosphere lamp (7.9) on the LIN node of automobile body controller (2.1).
7. The serial data bus communication control system of the hybrid electric vehicle according to claim 4, characterized in that: the intelligent entry system (2.11) is provided with 1-way LIN interface, and an LIN node of the intelligent entry system (2.11) is connected with an electronic steering column lock (8) and a kick sensor (8.1).
8. The serial data bus communication control system of the hybrid electric vehicle according to claim 1, characterized in that: and the gateway of the vehicle control unit (6) realizes signal routing and message routing between the power network segment (1) and the hybrid power network segment (3) and online monitoring of all communication nodes on the power network segment (1) and the hybrid power network segment (3) through application software of the vehicle control unit.
9. The serial data bus communication control system of the hybrid electric vehicle according to claim 1, characterized in that: the gateway of the combination instrument (4) realizes signal routing and message routing between the power network segment (1) and the vehicle body network segment (2) and online monitoring of all communication nodes on the power network segment (1) and the vehicle body network segment (2) through application software of a vehicle control unit;
the T-box (5) is connected into the vehicle body network segment (2) through a vehicle body network segment communication end, the T-box (5) is connected into the hybrid power network segment (3) through a hybrid power communication end, and the T-box (5) is used for acquiring signals which meet the GB/T27930 requirements of the vehicle body network segment (2) and the hybrid power network segment (3).
10. The serial data bus communication control method of the hybrid electric vehicle according to claim 1, comprising the steps of:
step 1: a gateway of the vehicle control unit (6) realizes signal routing and message routing between the power network segment (1) and the hybrid power network segment (3) and on-line monitoring of all communication nodes on the power network segment (1) and the hybrid power network segment (3);
step 2: the gateway of the combination instrument (4) realizes signal routing and message routing between the power network segment (1) and the vehicle body network segment (2) and on-line monitoring of all communication nodes on the power network segment (1) and the vehicle body network segment (2);
and step 3: the T-box (5) is accessed into the vehicle body network segment (2) through a vehicle body network segment communication end, the T-box (5) is accessed into the hybrid power network segment (3) through a hybrid power communication end, and signal acquisition meeting the requirements of GB/T27930 is carried out;
and 4, step 4: the power network segment (1), the vehicle body network segment (2) and the hybrid network segment (3) are all connected into a vehicle diagnosis interface, and all CAN controllers on the power network segment (1), the vehicle body network segment (2) and the hybrid network segment (3) are diagnosed.
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| CN115086151A (en) * | 2022-06-22 | 2022-09-20 | 重庆金康赛力斯新能源汽车设计院有限公司 | Communication system, communication method, vehicle body controller and storage medium |
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