CN201350880Y - Vehicle-mounted integrated information management system - Google Patents
Vehicle-mounted integrated information management system Download PDFInfo
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- CN201350880Y CN201350880Y CNU200920004696XU CN200920004696U CN201350880Y CN 201350880 Y CN201350880 Y CN 201350880Y CN U200920004696X U CNU200920004696X U CN U200920004696XU CN 200920004696 U CN200920004696 U CN 200920004696U CN 201350880 Y CN201350880 Y CN 201350880Y
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Abstract
A vehicle-mounted integrated information management system comprises a liquid crystal display, a CAN gateway and intelligent CAN nodes, wherein a plurality of the intelligent CAN nodes are provided, each intelligent CAN node is composed of a CAN transceiver, a CAN slaved controller and an SCM, wherein the CAN transceiver is connected with the CAN slaved controller which is connected with the SCM, the analogue/digital conversion interface of the SCM is connected with an automobile sensor through a sensor interface circuit, the CAN gateway includes a CAN bus driver, a CAN main controller, a high-speed photoelectric coupler and a microcomputer, wherein the CAN bus driver is connected with the CAN main controller through the high-speed photoelectric coupler, the CAN main controller is connected with the microcomputer, and the microcomputer is connected with the liquid crystal display. The utility model can integrate the fault information of all automobile systems on the liquid crystal display of the microcomputer by utilizing the bus technology, which facilitates drivers to learn about all the fault information clearly, and is convenient for timely processing the faults, and is favorable to increase the driving safety and comfort.
Description
Technical field
The utility model relates to the electron steering network system of automotive interior, particularly automobile information management system.
Background technology
Along with developing rapidly and widespread use on automobile of Eltec, the vehicle electronics degree is more and more higher, system is more and more, just comprise as the engine control part: the control of fuel delivery rate system, Wo 2009051153, plenum control system, emission control systems, E-gas control system, petrol feed pump control system, oil-break control system etc.Chassis control partly comprises electronic automatic transmission system, automatically controlled anti-skid brake system, electric power steering system, electric suspension system etc.The safety traffic control part comprises air bag system, collision avoidance system, skid control system, headlamp control system etc.These systems all are provided with corresponding sensor, as temperature sensor, pressure sensor, tachogen, speed sensor, flow sensor, liquid measure sensor, displacement pickup, direction sensor, gas concentration sensor etc., these sensors constantly detect vehicle behavior information, when a certain system breaks down, sensor can pass to failure message on the indicator lamp of instrument carrier panel, the luminous warning of indicator lamp.The integrated level of existing vehicle aspect fault information collection and demonstration is not high, the point that the mode of operation display instrument of each system and alarm lamp still follow conventional lines-between wiring, along with the widespread use of up-to-date technology on automobile, each system becomes increasingly complex, corresponding quantity of information is increasing, be arranged on the instrument carrier panel if the mode of operation display instrument of each system and alarm lamp are still discrete, chaufeur can not come into plain view to the demonstration of various failure messages, then is difficult in time make corresponding processing.
The utility model content
The purpose of this utility model provides a kind of vehicle integrated information management system with superpower consolidation function, utilize bussing technique, the failure message of all systems of automobile is gathered on the micro computer Liquid Crystal Display (LCD), chaufeur can be come into plain view to various failure messages, be convenient to various faults are in time made corresponding processing, help improving drive safety and comfort level.
For achieving the above object, the utility model is by the following technical solutions:
A kind of vehicle integrated information management system, by Liquid Crystal Display (LCD), the CAN gateway, the intelligent CAN node is formed, it is characterized in that: described intelligent CAN node has a plurality of, each intelligent CAN node is by the CAN transceiver, the CAN slave controller, micro controller system constitutes, the low level signal input/output end port of CAN transceiver and high level signal input/output end port and the total wire joint of CAN, the transmission FPDP of CAN transceiver is connected with the input buffering port of CAN slave controller, the reception FPDP of CAN transceiver is connected with the output buffered port of CAN slave controller, the parallel input/output port of CAN slave controller is connected with the parallel input/output port of micro controller system by data line, the address latch of CAN slave controller allows end to allow end to be connected with the address latch of micro controller system, the outer data of the sheet of CAN slave controller are write and are allowed end to write to allow to hold with the outer data of the sheet of micro controller system to be connected, the outer data of the sheet of CAN slave controller are read to allow to hold with the outer data of the sheet of micro controller system to read to allow end to be connected, the clock signal output terminal of CAN slave controller is connected with the clock signal terminal of micro controller system, and the mould of micro controller system/number conversion interface is connected with automobile sensor by sensor interface circuitry;
Described CAN gateway is by the CAN bus driver, the CAN master controller, high-speed photoelectric coupler, micro computer constitutes, the low level signal input/output end port of CAN bus driver and high level signal input/output end port and the total wire joint of CAN, the transmission FPDP of CAN bus driver is connected with the input buffering port of CAN master controller through high-speed photoelectric coupler, the reception FPDP of CAN bus driver is connected with the output buffered port of CAN master controller through high-speed photoelectric coupler, the parallel input/output port of CAN master controller is connected with the parallel input/output port of micro computer by data line, the address latch of CAN master controller allows end to allow end to be connected with the address latch of micro computer, the outer data of the sheet of CAN master controller are write and are allowed end to write to allow to hold with the outer data of the sheet of micro computer to be connected, the outer data of the sheet of CAN master controller are read to allow to hold with the outer data of the sheet of micro computer to read to allow end to be connected, the clock signal output terminal of CAN master controller is connected with the clock signal terminal of micro computer, and the parallel input/output port of micro computer is connected with Liquid Crystal Display (LCD).
The utility model has following positive beneficial effect: groundwork of the present utility model is to form local area network with the CAN device in automobile, utilize CAN (Controller Area Network) bussing technique that the sensor in the automobile is controlled in real time, sensor kind in the automobile is a lot, desired data transmission rate is also inequality, can be divided into low, in, high Three Estate, the data transmission rate that inferior grade requires is at 1-10Kbit/s, the data transmission rate that middle grade requires is at 10-100Kbit/s, the data transmission rate of high grade requirements is at 100-500Kbit/s, and the data transmission rate of CAN bus can reach 1Mbit/s, can satisfy the operating needs of various sensors fully.The CAN bus network does not resemble traditional asynchronous serial communication network, and it is not the transmission message of point-to-point, but in the mode of broadcasting message is sent to all nodes, communicates, and communication protocol can be CAN2.0.
The CAN bus has the characteristics of high-speed high capacity, can be competent at the real-time Transmission of mass data between multisystem.The utility model has utilized these characteristics just, form the intelligent CAN node with the CAN device, these intelligent CAN nodes all are connected in parallel on the CAN bus, micro controller system in each intelligent CAN node is connected with one group of sensor in the automobile, micro controller system reset power on after, the signal of each sensor output is gathered in beginning in real time, exported breakdown signal in case find a certain sensor, then mode and the CAN controller by interrupt request carries out data transmission, the CAN controller sends to data message on the CAN bus through the form of CAN transceiver with message, after the CAN gateway is received message, message is resolved, again failure message is shown on the Liquid Crystal Display (LCD), chaufeur can be come into plain view to various failure messages.
Description of drawings
Fig. 1 is a functional block diagram of the present utility model.
Fig. 2 is the structural representation of intelligent CAN node among Fig. 1.
Fig. 3 is the structural representation of CAN gateway among Fig. 1.
Fig. 4 is the schematic circuit diagram of Fig. 2.
Fig. 5 is the schematic circuit diagram of Fig. 3.
The specific embodiment
Please refer to Fig. 1, the utility model is a kind of vehicle integrated information management system, form by Liquid Crystal Display (LCD), CAN gateway, intelligent CAN node, the intelligent CAN node has a plurality of, these intelligent CAN nodes all are connected in parallel on the CAN bus, please refer to Fig. 2, Fig. 4, each intelligent CAN node is made of CAN transceiver U1, CAN slave controller U2, micro controller system U3, and the model of CAN transceiver U1 is PCA82C250.The model of CAN slave controller U2 is SJA1000.The model of micro controller system U3 is C8051.
The low level signal input/output end port CANL of CAN transceiver U1 and high level signal input/output end port CANH and the total wire joint of CAN;
The transmission FPDP TXD of CAN transceiver U1 is connected with the input buffering port TX0 of CAN slave controller U2;
The reception FPDP RXD of CAN transceiver U1 is connected with the output buffered port RX0 of CAN slave controller U2;
The parallel input/output port AD0-AD7 of CAN slave controller U2 is connected with the parallel input/output port P1.0-P1.7 of micro controller system U3 by data line;
The address latch of CAN slave controller U2 allows end ALE and the address latch of micro controller system U3 to allow end ALE to be connected;
The outer data of the sheet of CAN slave controller U2 are write and are allowed end WR to write with the outer data of the sheet of micro controller system U3 to allow to hold WR to be connected;
The outer data of the sheet of CAN slave controller U2 are read to allow to hold RD to read to allow end RD to be connected with the outer data of the sheet of micro controller system U3;
The clock signal output terminal CLKOUT of CAN slave controller U2 is connected with the clock signal terminal XTAL1 of micro controller system U3;
The mould of micro controller system U3/number conversion interface AIN0.0-AIN0.7 is connected with automobile sensor by sensor interface circuitry respectively; (only drawn one the tunnel among the figure) as shown in Figure 4, the mould of micro controller system U3/number conversion interface AIN0.0 is connected with automobile sensor U5 by sensor interface circuitry U4; Sensor interface circuitry U4 is a prior art, so no longer given unnecessary details.Micro controller system U3 is responsible for the initialization of CAN slave controller U2, its mode of operation is set, controls its mode of operation, carry out the reception and the transmission of data, CAN slave controller U2 is used to carry out the complete CAN agreement in the CAN standard, comprises message buffering and checks and accepts filtering.CAN transceiver U1 is the interface between CAN slave controller U2 and the CAN bus, and CAN transceiver U1 realizes differential transmission and the receiving function to the CAN bus.
Micro controller system U3 reset power on after, the signal of each sensor output is gathered in beginning in real time, exported breakdown signal in case find a certain sensor, then mode and the CAN slave controller U2 by interrupt request carries out data transmission, and CAN slave controller U2 sends to data message on the CAN bus with the form of message through CAN transceiver U1.
Please refer to Fig. 3, Fig. 5, the CAN gateway is made of CAN bus driver U6, CAN master controller U7, micro computer U8 and high-speed photoelectric coupler U10, U11, and the model of CAN bus driver U6 is TJA1050.The model of CAN master controller U7 is SJA1000.The model of micro computer U8 is P89C51.The model of high-speed photoelectric coupler U10, U11 is 6N173.
The low level signal input/output end port CANL of CAN bus driver U6 and high level signal input/output end port CANH and the total wire joint of CAN;
The transmission FPDP TXD of CAN bus driver U6 is connected with the input buffering port TX0 of CAN master controller U7 through high-speed photoelectric coupler U10;
The reception FPDP RXD of CAN bus driver U6 is connected with the output buffered port RX0 of CAN master controller U7 through high-speed photoelectric coupler U11;
The parallel input/output port AD0-AD7 of CAN master controller U7 is connected with the parallel input/output port P0.0-P0.7 of micro computer U8 by data line;
The address latch of CAN master controller U7 allows end ALE to allow end to be connected with the address latch of micro computer U8;
The outer data of the sheet of CAN master controller U7 are write and are allowed end WR to write with the outer data of the sheet of micro computer U8 to allow to hold WR to be connected;
The outer data of the sheet of CAN master controller U7 are read to allow to hold RD to read to allow end RD to be connected with the outer data of the sheet of micro computer U8;
The clock signal output terminal CLKOUT of CAN master controller U7 is connected with the clock signal terminal XTAL1 of micro computer U8;
The parallel input/output port P1.0-P1.7 of micro computer U8 is connected with Liquid Crystal Display (LCD) U9.Liquid Crystal Display (LCD) U9 can be dot matrix graphic lcd or dot matrix character Liquid Crystal Display (LCD).Liquid Crystal Display (LCD) U9 can carry driving circuit.The hardware of Liquid Crystal Display (LCD) U9 and micro computer U8 is connected to prior art, so repeat no more.
Micro computer U8 is by interrupt mode visit CAN master controller U7, in order to strengthen the antijamming capability of CAN gateway, the TX0 of CAN master controller U7 is not directly to link to each other with RXD with the TXD of CAN bus driver U6 with the RX0 port, but it is continuous to be coupled by high-speed photoelectric coupler U10, U11, has so just well realized the internodal electrical isolation of each intelligent CAN on CAN gateway and the bus.
Certain interference protection measure has also been adopted in the interface section of CAN bus driver U6 and CAN bus.The CANH of CAN bus driver U6 links to each other with the CAN bus by resistance R 7, R8 respectively with the CANL pin, and resistance can play certain metering function, and protection TJA1050 avoids the impact of excess current.Micro computer U8 is responsible for the initialization of CAN master controller U7, its mode of operation is set, controls its mode of operation, carry out the reception and the transmission of data, CAN master controller U7 is used to carry out the complete CAN agreement in the CAN standard, comprises message buffering and checks and accepts filtering.CAN bus driver U6 is the interface between CAN master controller U7 and the CAN bus, and CAN bus driver U6 realizes differential transmission and the receiving function to the CAN bus.The CAN gateway is resolved message after receiving the message of each intelligent CAN node transmission, failure message is shown on the Liquid Crystal Display (LCD) again, and chaufeur can be come into plain view to various failure messages.
Claims (1)
1. vehicle integrated information management system, by Liquid Crystal Display (LCD), the CAN gateway, the intelligent CAN node is formed, it is characterized in that: described intelligent CAN node has a plurality of, each intelligent CAN node is by the CAN transceiver, the CAN slave controller, micro controller system constitutes, the low level signal input/output end port of CAN transceiver and high level signal input/output end port and the total wire joint of CAN, the transmission FPDP of CAN transceiver is connected with the input buffering port of CAN slave controller, the reception FPDP of CAN transceiver is connected with the output buffered port of CAN slave controller, the parallel input/output port of CAN slave controller is connected with the parallel input/output port of micro controller system by data line, the address latch of CAN slave controller allows end to allow end to be connected with the address latch of micro controller system, the outer data of the sheet of CAN slave controller are write and are allowed end to write to allow to hold with the outer data of the sheet of micro controller system to be connected, the outer data of the sheet of CAN slave controller are read to allow to hold with the outer data of the sheet of micro controller system to read to allow end to be connected, the clock signal output terminal of CAN slave controller is connected with the clock signal terminal of micro controller system, and the mould of micro controller system/number conversion interface is connected with automobile sensor by sensor interface circuitry;
Described CAN gateway is by the CAN bus driver, the CAN master controller, high-speed photoelectric coupler, micro computer constitutes, the low level signal input/output end port of CAN bus driver and high level signal input/output end port and the total wire joint of CAN, the transmission FPDP of CAN bus driver is connected with the input buffering port of CAN master controller through high-speed photoelectric coupler, the reception FPDP of CAN bus driver is connected with the output buffered port of CAN master controller through high-speed photoelectric coupler, the parallel input/output port of CAN master controller is connected with the parallel input/output port of micro computer by data line, the address latch of CAN master controller allows end to allow end to be connected with the address latch of micro computer, the outer data of the sheet of CAN master controller are write and are allowed end to write to allow to hold with the outer data of the sheet of micro computer to be connected, the outer data of the sheet of CAN master controller are read to allow to hold with the outer data of the sheet of micro computer to read to allow end to be connected, the clock signal output terminal of CAN master controller is connected with the clock signal terminal of micro computer, and the parallel input/output port of micro computer is connected with Liquid Crystal Display (LCD).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920004696XU CN201350880Y (en) | 2009-02-13 | 2009-02-13 | Vehicle-mounted integrated information management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920004696XU CN201350880Y (en) | 2009-02-13 | 2009-02-13 | Vehicle-mounted integrated information management system |
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| Publication Number | Publication Date |
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| CN201350880Y true CN201350880Y (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200920004696XU Expired - Fee Related CN201350880Y (en) | 2009-02-13 | 2009-02-13 | Vehicle-mounted integrated information management system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722158A (en) * | 2012-06-22 | 2012-10-10 | 郭欢 | Distributed vegetable planting greenhouse monitoring system based on CAN (Controller Area Network) bus |
| CN104780081A (en) * | 2015-04-27 | 2015-07-15 | 浙江宇视科技有限公司 | Network connection failure detection device and method |
| CN108248678A (en) * | 2018-01-15 | 2018-07-06 | 北京新能源汽车股份有限公司 | A kind of Vehicular electric control system and electric vehicle |
-
2009
- 2009-02-13 CN CNU200920004696XU patent/CN201350880Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102722158A (en) * | 2012-06-22 | 2012-10-10 | 郭欢 | Distributed vegetable planting greenhouse monitoring system based on CAN (Controller Area Network) bus |
| CN104780081A (en) * | 2015-04-27 | 2015-07-15 | 浙江宇视科技有限公司 | Network connection failure detection device and method |
| CN104780081B (en) * | 2015-04-27 | 2018-06-05 | 浙江宇视科技有限公司 | A kind of network connectivity fai_lure detection device and method |
| CN108248678A (en) * | 2018-01-15 | 2018-07-06 | 北京新能源汽车股份有限公司 | A kind of Vehicular electric control system and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20140213 |