CN1694424A - Bus carried network control system and its management and control method - Google Patents
Bus carried network control system and its management and control method Download PDFInfo
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- CN1694424A CN1694424A CN 200510038545 CN200510038545A CN1694424A CN 1694424 A CN1694424 A CN 1694424A CN 200510038545 CN200510038545 CN 200510038545 CN 200510038545 A CN200510038545 A CN 200510038545A CN 1694424 A CN1694424 A CN 1694424A
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Abstract
The invention relates to a coach network control system, management and control method composed of five control units applying network communication for control, management and fault diagnosis. The system includes a front lighting control unit, a rear lighting control unit, an engine signal unit, an instrument display unit and a central control unit, the total network system is controlled and managed by the central control unit. Every electronic control unit has a fixed physical address and a diagnosis address in the system, which is the basis of the target and source addresses of the management and system diagnosis message ID. The central control unit and other nodes communicate for data requirement, response and network management request and response to realize network management of arrangement, diagnosis, sleep and awakening.
Description
Technology
The present invention passenger-vehicle network (CAN Controller Area Network) and its management and control systems
Relates to a control method based on the characteristics of buses, the control unit is configured by the five basic Away
Car Vehicle Network (CAN Controller Area Network) control system, using network traffic control,
Management and fault diagnosis.
BACKGROUND
Bus Body length, measured from the front to the rear of a large number of lighting power cables, high failure rate can be
Low reliability. Lighting control is controlled via switches and relays, no lights fault detection
And fault display function. Another car engines, instruments and other components are controlled using a separate party
Type, no system for management and control, fault code is stored in isolation, did not
Associated with failure condition data.
SUMMARY OF THE INVENTION
The purpose of the present invention is to address the above shortcomings, providing a passenger-vehicle network control
System and its management and control methods, with five with CAN bus interface electronic control unit
Yuan, including: a central control unit, the engine control unit, the meter display unit, the former
Lighting control unit, rear lighting control unit, a common component vehicle network. With network transmission control
System commands before and after the lighting control unit are controlled headlights and rear lights, eliminating the need for a large number of light
Optical cable, with a non-contact high-capacity high-end switches replace relays, improving reliability, lighting control
Check the headlight control unit has a function of whether the failure and LCD screen meter display unit
Character display with lights and other fault content, the engine signal unit, the engine signals and
Engine failure information into a CAN digital signals transmitted over the bus, eliminating the need for signal
Cable, reduce costs and improve reliability.
...
The purpose of the present invention is to address the above shortcomings, providing a passenger-vehicle network control
System and its management and control methods, with five with CAN bus interface electronic control unit
Yuan, including: a central control unit, the engine control unit, the meter display unit, the former
Lighting control unit, rear lighting control unit, a common component vehicle network. With network transmission control
System commands before and after the lighting control unit are controlled headlights and rear lights, eliminating the need for a large number of light
Optical cable, with a non-contact high-capacity high-end switches replace relays, improving reliability, lighting control
Check the headlight control unit has a function of whether the failure and LCD screen meter display unit
Character display with lights and other fault content, the engine signal unit, the engine signals and
Engine failure information into a CAN digital signals transmitted over the bus, eliminating the need for signal
Cable, reduce costs and improve reliability.
...
Lighting control unit structure includes CAN transceiver, a microprocessor integrated CAN controller,
High-current high-end switches, power supply and input-output interface circuit, CAN transceiver through the input
The input interface and CAN bus, CAN received digital signal, the integrated CAN controller
Microprocessors and CAN transceiver connected to the CAN decode digital signals to control high current high-end
Switching, power supply to the system power supply voltage, external light through the input-output interface
Connected with the high-current high-end switches, high-end switch has overheated and open circuit detection reporting capabilities, micro-
According to the report of the high-side switch processor, this information is encoded, via the CAN bus output.
...
Lighting control unit structure includes CAN transceiver, a microprocessor integrated CAN controller,
High-current high-end switches, power supply and input-output interface circuit, CAN transceiver through the input
The input interface and CAN bus, CAN received digital signal, the integrated CAN controller
Microprocessors and CAN transceiver connected to the CAN decode digital signals to control high current high-end
Switching, power supply to the system power supply voltage, external light through the input-output interface
Connected with the high-current high-end switches, high-end switch has overheated and open circuit detection reporting capabilities, micro-
According to the report of the high-side switch processor, this information is encoded, via the CAN bus output.
...
Engine signal unit structure includes CAN transceiver with integrated CAN controller microprocessor
Control, power supply and input-output interface circuits, power supply to the system power supply voltage,
CAN transceiver through the input-output interface and CAN bus, CAN received digital signal,
Integrated CAN controller and CAN transceiver connected to the microprocessor, digital signal decoding the CAN,
The sensor input-output interface connected to the microprocessor, the analog signal is converted into a CAN message
Man, through the CAN transceiver and CAN bus, EFI speed CAN output information by entering
The input interface is connected to the microprocessor.
Engine signal unit structure includes CAN transceiver with integrated CAN controller microprocessor
Control, power supply and input-output interface circuits, power supply to the system power supply voltage,
CAN transceiver through the input-output interface and CAN bus, CAN received digital signal,
Integrated CAN controller and CAN transceiver connected to the microprocessor, digital signal decoding the CAN,
The sensor input-output interface connected to the microprocessor, the analog signal is converted into a CAN message
Man, through the CAN transceiver and CAN bus, EFI speed CAN output information by entering
The input interface is connected to the microprocessor....
Passenger vehicle network control system management and control methods: According to vehicle design requirements
Identified a number of CAN interface with an electronic control unit, composed of vehicle network, each electronic
The control unit must have a physical address and diagnostics to determine the address, which is the network management and system
System diagnostics message identifier destination address and source address based central control unit and vehicle
Other nodes in the network through the "configuration data request, the response," and "network management requests,
Answer "other digital communication interacting network of the entire vehicle configuration, diagnostics,
Sleep, wake up and a series of network management;
...
Passenger vehicle network control system management and control methods: According to vehicle design requirements
Identified a number of CAN interface with an electronic control unit, composed of vehicle network, each electronic
The control unit must have a physical address and diagnostics to determine the address, which is the network management and system
System diagnostics message identifier destination address and source address based central control unit and vehicle
Other nodes in the network through the "configuration data request, the response," and "network management requests,
Answer "other digital communication interacting network of the entire vehicle configuration, diagnostics,
Sleep, wake up and a series of network management;
...
The central control unit memory network node status exists a dynamic database, including the node
Physical address, node diagnosis address, node activation status, fault status, or system bus fault
System compatibility status. Failure of the entire system and message content by the central control unit via
Network communication, triggering the instrument LCD screen with Chinese characters for display.
Passenger vehicle network management and control system and its control method main features:
1, front rear set a CAN interface with the lighting control unit, headlight control unit
Control front of the car low and high beam lights, front fog lights and front left turn signal lamp, rear lamp control
Unit controls the brake lights, reversing lights, rear fog lights, parking lights, double jump lights and rear left turn
To the lamp, in which two light between the control unit is connected to only one pair, save to the front of the car
Many car lighting cables. Combination switch switching signal converted by the central control unit
CAN digital signals through the CAN bus transmission, anti-interference ability and good reliability. Front and rear
Lighting control unit microprocessor to decode the digital signal on the CAN control the different ports
Output.
...
1, front rear set a CAN interface with the lighting control unit, headlight control unit
Control front of the car low and high beam lights, front fog lights and front left turn signal lamp, rear lamp control
Unit controls the brake lights, reversing lights, rear fog lights, parking lights, double jump lights and rear left turn
To the lamp, in which two light between the control unit is connected to only one pair, save to the front of the car
Many car lighting cables. Combination switch switching signal converted by the central control unit
CAN digital signals through the CAN bus transmission, anti-interference ability and good reliability. Front and rear
Lighting control unit microprocessor to decode the digital signal on the CAN control the different ports
Output.
...
3, the lighting control unit has a function of detecting the loop current, find fault, the fault signal
Information via the CAN bus, a digital signal is sent to the central control unit, by the central control unit
Triggered CAN bus instrumentation, reporting external light does not shine.
4, for the characteristics of the rear engine bus, set the signal unit engine, the engine
And engine failure information signal, converted into a CAN digital signals transmitted over the bus, eliminating
Signal cables, reduce costs and improve reliability. Fault information transmitted over the bus in the central
Control unit stores, water temperature, speed and other information displayed on the meter.
5, the central control unit is responsible for managing vehicle network to collect all the electronic control unit so
Impaired information storage and trigger CAN bus electronic instrument cluster, with the LCD screen
Character display fault content and fault conditions at the time the data, the more serious faults directly
Drive LCD screen flicker.
BRIEF DESCRIPTION
In conjunction with the following drawings, the present invention will be further described.
Figure 1 is a passenger vehicle network control system schematic diagram of a network node.
Figure 2 is a passenger vehicle network control system for lighting control unit circuit diagram.
Figure 3 passenger vehicle network control system central control unit circuit diagram.
Figure 4 passenger car engine control system network signal unit circuit diagram.
Figure 5 passenger vehicle network control system instrumentation control unit circuit diagram.
Specific embodiments
Referring to the drawings 1-5, passenger vehicle network lighting control system includes a control unit before and after
Lighting control unit, the engine signal unit, the meter display unit and a central control unit, the entire
Network system by the central control unit for control and management, each of the electronic control unit to
There is a definite physical address and diagnostic address, which is the network management and system diagnostics messages marked
Identifier of the destination address and source address basis, the central control unit and other sections of vehicle networks
Point through the "configuration data request, the response," and "network management requests, responses," and several
Interactive digital communication, the realization of the entire vehicle network configuration, diagnostics, sleep, wake up
And a series of network management;
...
Lighting control unit structure includes CAN transceiver, a microprocessor integrated CAN controller,
High-current high-end switches, power supply and input-output interface circuit, CAN transceiver through the input
The input interface and CAN bus, CAN received digital signal, the integrated CAN controller
Microprocessors and CAN transceiver connected to the CAN decode digital signals to control high current high-end
Switching, power supply to the system power supply voltage, external light through the input-output interface
Connected with the high-current high-end switches, high-end switch has overheated and open circuit detection reporting capabilities, micro-
According to the report of the high-side switch processor, this information is encoded, via the CAN bus output.
...
Lighting control unit including CAN transceiver integrated CAN controller microprocessor, a large
Current high-end switches, power supply and input-output interface circuits. CAN transceiver can be used
TJA1054, the microprocessor can be used MC68HC908GZ16, high-current high-end switches can adopt
With the MC33286 and MC33288, regulated power supply using 7812 and 7805. CAN transceiver through
Through input-output interface and CAN bus, CAN received digital signal, the integrated CAN controller
The microprocessor and CAN transceiver connected to the CAN decode digital signals to control high current
High-end switching, power supply to the system power supply voltage, external light input through output
Interface with the high-current high-end switches are connected. High-side switch with overheating and power circuit test report
Energy, high-side switch based on the report of the microprocessor, this information is encoded through the CAN bus
Line output.
...
Lighting control unit including CAN transceiver integrated CAN controller microprocessor, a large
Current high-end switches, power supply and input-output interface circuits. CAN transceiver can be used
TJA1054, the microprocessor can be used MC68HC908GZ16, high-current high-end switches can adopt
With the MC33286 and MC33288, regulated power supply using 7812 and 7805. CAN transceiver through
Through input-output interface and CAN bus, CAN received digital signal, the integrated CAN controller
The microprocessor and CAN transceiver connected to the CAN decode digital signals to control high current
High-end switching, power supply to the system power supply voltage, external light input through output
Interface with the high-current high-end switches are connected. High-side switch with overheating and power circuit test report
Energy, high-side switch based on the report of the microprocessor, this information is encoded through the CAN bus
Line output.
...
Engine signal unit structure includes CAN transceiver with integrated CAN controller microprocessor
Control, power supply and input-output interface circuits, power supply to the system power supply voltage,
CAN transceiver through the input-output interface and CAN bus, CAN received digital signal,
Integrated CAN controller and CAN transceiver connected to the microprocessor, digital signal decoding the CAN,
The sensor input-output interface connected to the microprocessor, the analog signal is converted into a CAN message
Man, through the CAN transceiver and CAN bus, EFI speed CAN output information by entering
The input interface is connected to the microprocessor;
Engine signal unit structure includes CAN transceiver with integrated CAN controller microprocessor
Control, power supply and input-output interface circuits, power supply to the system power supply voltage,
CAN transceiver through the input-output interface and CAN bus, CAN received digital signal,
Integrated CAN controller and CAN transceiver connected to the microprocessor, digital signal decoding the CAN,
The sensor input-output interface connected to the microprocessor, the analog signal is converted into a CAN message
Man, through the CAN transceiver and CAN bus, EFI speed CAN output information by entering
The input interface is connected to the microprocessor;...
Passenger vehicle network lighting control unit before and after the lighting control unit with CAN connection
Mouth, were installed in the front, rear, headlight control unit controls the front of the car low and high beam
Lights, front fog lights and front left turn signal lamp, rear lamp control unit controls the brake lights, down lights,
Rear fog lamps, parking lamps, double jump lights and rear left and right turn signals, separated by a CAN bus,
CAN messages according to large-capacity high-side switch control different pin directly send a large current to light far
Light, low beam lights, turn signals, fog lights and brake lights, down lights; combined switch switching signal
Number, by the central control unit converts CAN digital signal transmitted via the CAN bus, after
Lighting control unit microprocessor to decode the digital signal on the CAN control the different ports
Output current.
...
Passenger vehicle network lighting control unit before and after the lighting control unit with CAN connection
Mouth, were installed in the front, rear, headlight control unit controls the front of the car low and high beam
Lights, front fog lights and front left turn signal lamp, rear lamp control unit controls the brake lights, down lights,
Rear fog lamps, parking lamps, double jump lights and rear left and right turn signals, separated by a CAN bus,
CAN messages according to large-capacity high-side switch control different pin directly send a large current to light far
Light, low beam lights, turn signals, fog lights and brake lights, down lights; combined switch switching signal
Number, by the central control unit converts CAN digital signal transmitted via the CAN bus, after
Lighting control unit microprocessor to decode the digital signal on the CAN control the different ports
Output current.
...
Engine signal unit, the engine and engine failure information signal, converts CAN
Digital signals transmitted over the bus, the transmission failure information stored in the central control unit, water
Temperature, speed and other information displayed on the meter.
Engine signal unit, the engine and engine failure information signal, converts CAN
Digital signals transmitted over the bus, the transmission failure information stored in the central control unit, water
Temperature, speed and other information displayed on the meter....
Engine signal unit, the engine and engine failure information signal, converts CAN
Digital signals transmitted over the bus, the transmission failure information stored in the central control unit, water
Temperature, speed and other information displayed on the meter....
According to bus characteristics, CAN System Settings five modules, information about the five modules
The following table:
Network node
| CAN Address | Node name Call | Diagnosis Address | Net Contact | Network Management | Diagnostic ID Request / response | Configuration ID Request / response | Node Description |
| 0 | Central control Controller section Point | 04 | B And C | 700 | 7X0/7x0 | 7X0/NA | Receive driving switching signal, into Code transmission lines, receiving the other Module CAN messages in the system Memory storage failures and other related information Interest. |
| 4 | Engine Signal Section Point | 0B | B And C | 704 | 7X0/7x4 | 7X0/74 | Engine signal unit, will be issued Engine speed and engine temperature Failure, etc., into a CAN message, The network, |
| 5 | Meter display A display unit Node | 85 | B | 705 | 7X0/7x8 | 7X0/745 | CAN messages received, indicating the line Vehicle parameters, far and near lighting, Fog lights, steering and other lighting instructions, Water temperature alarm, oil pressure alarm, etc. · |
| 12 | Front lights Control Section Point | 1A | B | 70C | 7X0/7xC | 7X0/74C | CAN message control receiver front Lighting, detection circuit breaking it Impaired coded transmission. |
| 13 | After lighting Control Section Point | 8A | B | 70D | 7X0/7xD | 7X0/74D | CAN messages received control rear Lighting, lamp failure detection compiled Code is sent. |
The functions of the five modules, the system detects and displays the fault as follows:
1, high beam failure (left)
2, near light fault (or so)
3, turn signal failure (left front)
4, fog lights fault (front)
5, down lights fault (after)
6, the parking lights fault (after)
7, the brake lamp failure (after)
8, double jump lights malfunction (front)
9, the node is disconnected from the bus. (CAN high and CAN low wire break, CAN high and CAN low short
Road)
Passenger vehicle network control system management and control methods:
1, the vehicle network configuration of certain electronics with microprocessor control unit (hereinafter referred to as Section
Point), the composition controller area network, the central control unit (abbreviated body computers) Management Network
Network, is the primary vehicle network node, the other control units as slave nodes, all nodes
Determining a physical address and a diagnostic address, so that the system configuration, diagnostics, and network management.
2, the central control unit and the vehicle must be all the nodes in the network to maintain communications in the
Central control unit CPU in there original configuration node database system, including physical node
Address, node diagnosis address, node activation status, fault status, failure or system bus and
Yung state, the central control unit continuously sends network management packets, system nodes for questioning,
Grasp the activities of each node to form a system. "Node status database", the central control
Control unit in accordance with all nodes in the response packet, the current activity status of each node in the "Node
State database "in the logo, and then be compared and the original configuration, network management and play
The role of system diagnostics; entire system fault message content and by the central control unit
Communicate through the network, triggering odometer LCD screen with Chinese characters for display.
...
2, the central control unit and the vehicle must be all the nodes in the network to maintain communications in the
Central control unit CPU in there original configuration node database system, including physical node
Address, node diagnosis address, node activation status, fault status, failure or system bus and
Yung state, the central control unit continuously sends network management packets, system nodes for questioning,
Grasp the activities of each node to form a system. "Node status database", the central control
Control unit in accordance with all nodes in the response packet, the current activity status of each node in the "Node
State database "in the logo, and then be compared and the original configuration, network management and play
The role of system diagnostics; entire system fault message content and by the central control unit
Communicate through the network, triggering odometer LCD screen with Chinese characters for display.
...
Automotive electronic control unit must be online configuration and system diagnostics diagnostic services through the system
Implementation, diagnostic services CAN frame fixed length 8 bytes, the unused bytes filled with zeros,
Destination address (T) and the source address (S) controlled by the transmission protocol. Identifies the source address in the CAN
Character is encoded within. In the CAN message, the identifier in the following table:
Message identifier:
| Bit 10 | Bit 9 | Bit 8 | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 |
| Level | Species | Node Address | ||||||||
Level: The most urgent application to 000, network management and diagnostics for the 111.
Type: the highest priority is 000, the lowest priority is 111.
Data length information (L) is converted DL parameter. By the "Diagnostic service ID" (SID)
The data area will begin a byte by byte compiled into the new structure of the data packets
Areas. In the tester's request packet, the destination address is the physical address of the ECU, the ECU
The response packet, the destination address is the address of the tester F1. System provides diagnostic services
Service and service codes in the following table:
| Diagnostic Service Name | Request ID | Answer ID |
| Start diagnostic process | Xx | XX |
| Stop the diagnostic process | Xx | XX |
| Secure Access | Xx | XX |
| Testing is currently | Xx | XX |
| Read ECU mark | Xx | XX |
| Identification code to read data from the region | Xx | XX |
| Writing by the Regional identification code data | Xx | XX |
| Read diagnostic trouble status code | Xx | XX |
| Read diagnostic trouble codes state | Xx | XX |
| Read a fixed (freeze) frame data | Xx | XX |
| Clear diagnostic information | Xx | XX |
| Conducted by the regional identification code input and output control | Xx | XX |
| Conducted by the regional identification code input and output control... | Xx | XX |
| Conducted by the regional identification code input and output control... | Xx | XX |
| Request by the regional identification code subroutine results | Xx | XX |
| Ask Download | Xx | XX |
| Transmission of data | Xx | XX |
| Request Transfer Exit | Xx | XX |
"Diagnostic request packets" sent by the test instrument, the request packet destination address is always Festival
Point of the physical address of the node "Diagnostic response packets" target address is always measuring instrument
Physical Address F1. With the system diagnostics, system parameters can be changed, change the output, the input
Relationship.
Test equipment system node receives the "Diagnostics request" packets, according to a fixed
Format to be responding, if you accept the request to the "positive response diagnostic request" reply, if not
Accepted by the "diagnostic requests negative response" replies. Positive and negative responses have different response code.
Negative response was divided into "general denial" "busy - repeat request" "request of range" and so on, with different
The code should be separated.
Diagnostic services message format:
| Diagnostic requests: 7X0 Type: E Cycle: - Size: 8 bytes Sender: test equipment | |||||
| Signal Name | Send events | Bic | Size | Nature | Numerical |
| TPDU | - | 63-0 | 8 | See the diagnostic protocol | - |
| Diagnostic Response: 7x0-7xX Type: E Cycle: - Size: 8 bytes Sender: network node | |||||
| TPDU | - | 63-0 | 8 | See the diagnostic protocol | - |
For example:
| For example:... | ||||||||
| ID | TPDU | |||||||
| 7x0 | xx | xx | xx | xx | 00 | 00 | 00 | 00 |
| For example:... | 0 means single frame 2 shows for the diagnosis Bytes off 2 | Service Code | OBD-II Default clinic Down mode | Unused Fill bytes 0 | Unused Fill bytes 0 | Unused Fill bytes 0 | Unused Fill bytes 0 | |
| Instrument: "The positive response start diagnostic process." | ||||||||
| 7X5 | F1 | xx | xx | xx | 00 | 00 | 00 | 00 |
| 5 Meter CAN Address | Diagnostic The address of | 0 means single frame 2 shows for the diagnosis Bytes off 2 | Positive response Should serve Services on behalf of Code | Default clinic Down mode OBD-II | Unused Fill bytes 0 | Unused Fill bytes 0 | Unused Fill bytes 0 | Unused Fill bytes 0 |
| Instrument "Start diagnosis process negative response" | ||||||||
| 7X5 | F1 | xx | xx | xx/xx | 00 | 00 | 00 | 00 |
| 5 Meter CAN Address | Diagnostic The address of | 0 means single frame 2 shows for the diagnosis Bytes off 2 | Negative impact Should serve Services on behalf of Code | Negative impact Should serve Services on behalf of Code... | Negative impact Should serve Services on behalf of Code... | Unused Fill bytes 0 | Unused Fill bytes 0 | Unused Fill bytes 0 |
4, the system central control unit stores all the data in the original configuration of nodes in the run
, The central control unit issued at regular intervals network management request packet, all slave
Node in turn sends back a response packet. Good packets with specified format encoding, with certain
Word bits indicate the network wake-up command network and node failures dormant state and live in the network
Moving the state and other information, the central control unit receives these packets, according to the prescribed format to decode
Determine the node configuration and fault status, and the system compares the original configuration, according to the dynamic
Differences in the database to determine fault, fault alarm is triggered.
...
4, the system central control unit stores all the data in the original configuration of nodes in the run
, The central control unit issued at regular intervals network management request packet, all slave
Node in turn sends back a response packet. Good packets with specified format encoding, with certain
Word bits indicate the network wake-up command network and node failures dormant state and live in the network
Moving the state and other information, the central control unit receives these packets, according to the prescribed format to decode
Determine the node configuration and fault status, and the system compares the original configuration, according to the dynamic
Differences in the database to determine fault, fault alarm is triggered.
...
| Node Address | Original configuration | Original configuration... | Original configuration... | Bus failure or system is not compatible ... | |
| Bus failure or system is not compatible ... | 0 | 0 indicates that the configured 1 is not configured | 0 indicates activated 1 is not activated | 0 indicates no failure 1 indicates a fault | 0 indicates normal bus 1 represents a bus from the |
| Node | 1 | 0 indicates that the configured 1 is not configured | 0 indicates activated 1 is not activated | 0 indicates no failure 1 indicates a fault | 0 indicates normal bus 1 represents a bus from the |
| Node | 2 | 0 indicates that the configured 1 is not configured | 0 indicates activated 1 is not activated | 0 indicates no failure 1 indicates a fault | 0 indicates normal bus 1 represents a bus from the |
| 0 indicates normal bus 1 represents a bus from the... | 3 | 0 indicates normal bus 1 represents a bus from the... | 0 indicates activated 1 is not activated | 0 indicates no failure 1 indicates a fault | 0 indicates normal bus 1 represents a bus from the |
The central control unit is a vehicle-mounted network administrator, the central control unit according to a fixed
Cycle sent on the network, "Network Management" packets, the packet length determined according to the amount of information, the grid
Following formula:
| The master node ID: 700 Type: PE cycle: XXms X bytes Sender: Body Computer | |||||
| Signal Name | Send events | Bit No. | Bit number | Nature | Numerical |
| 0 bytes | No | 63-56 | 8 | Fixed | 0 |
| Dynamic link library error condition State | No | 55-54 | 2 | Error active state No response / alarm status Bus off state Need not | 0 1 2 3 |
| Physical layer error status | No | 53-53 | 1 | Failure does not exist Failure exists | 0 1 |
| Configuration Status | No | 52-52 | 1 | Has been configured Not configured | 0 1 |
| The master node active | No | 51-51 | 1 | Not active Has been activated | 0 1 |
| System Commands | Yes | 50-49 | 2 | Wake-up request Need not System parked in the activation request System hibernates request | 0 1 2 3 |
| Need not | 48 | 1 | Always 0 | 0 | |
| Slave node active | No | 47-32 | 16 | Not currently active on the bus, Is currently active on the bus | 0 1 |
Slave node receives the central control unit of the "network management request" packets, to bring
Has its own physical address is the identifier of the "Network Management Response" message to reply, the central control
Control unit in accordance with all nodes in the response packet, the current activity status of each node in the "Node
State database "in the logo, and then be compared and the original configuration, network management and play
The role of system diagnostics
Slave node packet format is as follows:
| Slave node ID 70X Type: E cycle: - 2 bytes Sender: slave node | |||||
| Signal Name | Send events | Bit No. | Bit number | Nature | Numerical |
| Dynamic link library fault condition State | No | 63-62 | 2 | Error active state No response / alarm status Bus off state Need not | 0 1 2 3 |
| Configuration Status | No | 61 | Has been configured Not configured | 0 1 | |
| Active | No | 60 | 1 | Not active Has been activated | 0 1 |
| System Status | Yes | 59-58 | 2 | Wake-up request Need not System parked in the activation request Need not | 0 1 2 3 |
| Loop 1 | 57 | 1 | Normal Open circuit | 0 1 | |
| Loop 2 | 56 | 1 | Normal Open circuit | 0 1 | |
| Loop 3 | 55 | 1 | Normal Open circuit | 0 1 | |
| Loop 4 | 54 | 1 | Normal Open circuit | 0 1 | |
| Loop 5 | 53 | 1 | Normal Open circuit | 0 1 | |
| Circuit 6 | 52 | 1 | Normal Open circuit | 0 1 | |
| Circuit 7 | 51 | 1 | Normal Open circuit | 0 1 | |
| Circuit 8 | 50 | 1 | Normal Open circuit | 0 1 | |
| Circuit 9 | 49 | 1 | Normal Open circuit | 0 1 | |
| Loop 10 | 48 | 1 | Normal Open circuit | 0 1 | |
5, the central control unit fault in the fault code memory area at the same time, storage failure
The condition occurs when the parameters for system analysis.
5, the central control unit fault in the fault code memory area at the same time, storage failure
The condition occurs when the parameters for system analysis....
| 5, the central control unit fault in the fault code memory area at the same time, storage failure The condition occurs when the parameters for system analysis.... | Byte | Description | Transformation | Unit |
| #1 | #1 #2 | DTC (high byte) DTC (low byte) | ||
| #3 | DTC status | |||
| #4 | Supply Voltage | |||
| #5 | Event Counter | 1 = 1 event | [Events] | |
| #2 | #1 #2 | DTC (high byte) DTC (low byte) | ||
| #5 | Event Counter | 1 = 1 event | [Events] | |
| #n | #1 #2 | DTC (high byte) DTC (low byte) | ||
| #5 | Event Counter | 1 = 1 event | [Events] |
6, the bus open, causing the loss of a node when the replacement or repair is not compatible with the system
The electronic control unit, the central control unit via network communication, the trigger odometer display LCD
Screen flicker.
7, after a failure, such as damage to the lamp, the light control unit fault content through
CAN bus sends CAN messages, the central control unit of the CAN packet decoding, storing it
Fault code, driver instrument LCD display fault with Chinese scroll content.
Claims (8)
1, passenger-vehicle network control system, comprising former lighting control unit,
After the lighting control unit, the engine signal unit, the meter display unit and a central control unit,
The entire network from a central control unit for control and management;
The central control unit includes a microprocessor integrated CAN controller, CAN transceiver,
CAN bus interface, power supply, input and output interface circuit, switching signal detection
Lu, CAN bus via input and output interfaces are connected with the CAN transceiver, CAN transceiver
Connected with the microprocessor CPU, combination switch with input and output interfaces connected through the switching signal
Number detection circuit connected to the microprocessor CPU, power supply to the system to provide operating voltage;
Lighting control unit structure includes CAN transceiver, a microprocessor integrated CAN controller,
High-current high-end switches, power supply and input-output interface circuit, CAN transceiver through the input
The input interface and CAN bus, CAN received digital signal, the integrated CAN controller
Microprocessors and CAN transceiver connected to the CAN decode digital signals to control high current high-end
Switching, power supply to the system power supply voltage, external light through the input-output interface
Connected with the high-current high-end switches, high-end switch has overheated and open circuit detection reporting capabilities, micro-
According to the report of the high-side switch processor, this information is encoded, via the CAN bus output;
...
Lighting control unit structure includes CAN transceiver, a microprocessor integrated CAN controller,
High-current high-end switches, power supply and input-output interface circuit, CAN transceiver through the input
The input interface and CAN bus, CAN received digital signal, the integrated CAN controller
Microprocessors and CAN transceiver connected to the CAN decode digital signals to control high current high-end
Switching, power supply to the system power supply voltage, external light through the input-output interface
Connected with the high-current high-end switches, high-end switch has overheated and open circuit detection reporting capabilities, micro-
According to the report of the high-side switch processor, this information is encoded, via the CAN bus output;
...
Instrumentation control unit includes a microprocessor integrated CAN controller, CAN transceiver,
Power supply, input and output interfaces, character display module, LED driver modules, LED hair
LED, stepper motor module, power supply to the system to provide operating voltage, CAN total
Line through the input-output interface is connected with the CAN transceiver, CAN transceiver microprocessor
Connected to the CPU, the microprocessor through the LED driver module and LED light-emitting diode is connected to the Han
Character display module connected to the microprocessor, display fault information, the microprocessor with multiple stepper motors
Machine connected to drive the meter pointer.
2, according to claim 1, wherein said network control system passenger vehicle, characterized in that the passenger
Car vehicle network lighting control unit before and after the lighting control unit with CAN interfaces, sub-
Do installed in the front, rear, headlight control unit controls the front of the car low and high beam lights, front
The left and right front fog lights and turn signals, rear lamp control unit controls the brake lights, down lights, rear fog
Lights, parking lights, double jump lights and rear left and right turn signals, in both the lighting control unit
Only one pair is connected between, combination switch switch signal from the central control unit conversion
A CAN digital signals transmitted through the CAN bus, the microprocessor of the control unit after lighting
Decoding the digital signal of the CAN control the output current of different ports.
...
2, according to claim 1, wherein said network control system passenger vehicle, characterized in that the passenger
Car vehicle network lighting control unit before and after the lighting control unit with CAN interfaces, sub-
Do installed in the front, rear, headlight control unit controls the front of the car low and high beam lights, front
The left and right front fog lights and turn signals, rear lamp control unit controls the brake lights, down lights, rear fog
Lights, parking lights, double jump lights and rear left and right turn signals, in both the lighting control unit
Only one pair is connected between, combination switch switch signal from the central control unit conversion
A CAN digital signals transmitted through the CAN bus, the microprocessor of the control unit after lighting
Decoding the digital signal of the CAN control the output current of different ports.
...
4, according to claim 1, wherein said network control system passenger vehicle, characterized in that the front,
After the lighting control unit detects the loop current, discovered circuit, the fault in the network management information editing
Management packets, via the CAN bus, a digital signal is sent to the central control unit, the central
CAN bus control unit triggers the display unit, reporting external light does not shine.
5% E3% 80% 81% E6% A0% B9% E6% 8D% AE% E6% 9D% 83% E5% 88% A9% E8% A6% 81% E6% B1% 821% E6% 89% 80% E8% BF% B0% E5% AE% A2% E8% BD% A6% E8% BD% A6% E8% BD% BD% E7% BD% 91% E7% BB% 9C% E6% 8E% A7% E5% 88% B6% E7% B3% BB% E7% BB% 9F% EF% BC% 8C% E5% 85% B6% E7% 89% B9% E5% BE% 81% E5% 9C% A8% E4% BA% 8E% E5% 8F% 91% E5% 8A% A8% 0A% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% E6% 9C% BA% E4% BF% A1% E5% 8F% B7% E5% 8D% 95% E5% 85% 83% EF% BC% 8C% E5% B0% 86% E5% 8F% 91% E5% 8A% A8% E6% 9C% BA% E4% BF% A1% E5% 8F% B7% E5% 92% 8C% E5% 8F% 91% E5% 8A% A8% E6% 9C% BA% E6% 95% 85% E9% 9A% 9C% E4% BF% A1% E6% 81% AF% EF% BC% 8C% E8% BD% AC% E6% 8D% A2% E6% 88% 90CAN% E6% 95% B0% E5% AD% 97% E4% BF% A1% E5% 8F% B7% EF% BC% 8C% 0A% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% E9% 80% 9A% E8% BF% 87% E6% 80% BB% E7% BA% BF% E4% BC% A0% E8% BE% 93% EF% BC% 8C% E9% 80% 9A% E8% BF% 87% E6% 80% BB% E7% BA% BF% E4% BC% A0% E8% BE% 93% E7% 9A% 84% E6% 95% 85% E9% 9A% 9C% E4% BF% A1% E6% 81% AF% E5% 9C% A8% E4% B8% AD% E5% A4% AE% E6% 8E% A7% E5% 88% B6% E5% 8D% 95% E5% 85% 83% E5% AD% 98% E5% 82% A8% EF% BC% 8C% E6% B0% B4% E6% B8% A9% E3% 80% 81% 0A% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% E8% BD% AC% E9% 80% 9F% E7% AD% 89% E4% BF% A1% E6% 81% AF% E5% 9C% A8% E4% BB% AA% E8% A1% A8% E4% B8% 8A% E6% 98% BE% E7% A4% BA% E3% 80% 82
6, according to claim 1, wherein said passenger vehicle network control system, wherein the
Central control unit is responsible for the combination switch converts the signal into a digital signal CAN, also responsible for the
Management vehicle network to collect all the electronic control unit fault information is stored and triggers
CAN bus electronic instrument cluster, with Chinese characters on the LCD screen displays the fault content and occurrence
Fault conditions at the time the data.
...
7, passenger-vehicle network control system management and control method, wherein based on
Vehicle design requirements to determine a number of CAN interface with an electronic control unit, composed Car Network
Network, each electronic control unit must have a physical address and a diagnostic to determine the address, which is
Network management and system diagnostics message identifier of the destination address and source address based central control
Control unit and vehicle networks other nodes through the "configuration data request, the response," and "net
Network management requests, answering "other digital communication interaction network of the entire vehicle
Configuration, diagnostics, sleep, wake up and a series of network management;
...
7, passenger-vehicle network control system management and control method, wherein based on
Vehicle design requirements to determine a number of CAN interface with an electronic control unit, composed Car Network
Network, each electronic control unit must have a physical address and a diagnostic to determine the address, which is
Network management and system diagnostics message identifier of the destination address and source address based central control
Control unit and vehicle networks other nodes through the "configuration data request, the response," and "net
Network management requests, answering "other digital communication interaction network of the entire vehicle
Configuration, diagnostics, sleep, wake up and a series of network management;
...
8, according to claim 7 passenger vehicle network control system for management and control of party
Method, characterized in that the central control unit memory, there are dynamic data network node status
Libraries, including the physical node address, node diagnosis address, node activation status, fault status,
Bus fault or system compatibility status. Failure of the entire system and message content by the Central
The control unit via network communication, triggering the instrument LCD screen with Chinese characters for display.
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| CNB2005100385452A CN100369435C (en) | 2005-03-24 | 2005-03-24 | Bus carried network control system and its management and control method |
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