CN105398407A - CAN bus fault monitoring and displaying system for vehicle-mounted controller - Google Patents
CAN bus fault monitoring and displaying system for vehicle-mounted controller Download PDFInfo
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- CN105398407A CN105398407A CN201510739557.1A CN201510739557A CN105398407A CN 105398407 A CN105398407 A CN 105398407A CN 201510739557 A CN201510739557 A CN 201510739557A CN 105398407 A CN105398407 A CN 105398407A
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- controller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Small-Scale Networks (AREA)
Abstract
A CAN bus fault monitoring and displaying system for a vehicle-mounted controller comprises a power CAN network and a vehicle body CAN network, wherein the power CAN network is provided with an engine controller, a gearbox controller, an electronic steering lock controller and a steering power-assisted controller; and the vehicle body CAN network is provided with a vehicle body controller, an airbag controller, an air conditioner controller and a multimedia controller. The CAN bus fault monitoring and displaying system for the vehicle-mounted controller is characterized in that output ends of the power CAN network and the vehicle body CAN network are connected with a gateway controller; an output end of the gateway controller is connected with an input end of a CAN network monitoring unit for monitoring controller network state and recording fault information; and through an instrument controller, the output end of the vehicle body CAN network is connected with an input end of a CAN network fault displaying unit capable of receiving and displaying bus fault information. According to the invention, as the instrument controller is used as the CAN network fault displaying unit, a driver can know automobile controller network fault states in time so as to adopt corresponding measures so that vehicle and personal safety problems are avoided.
Description
Technical field
The present invention is mainly used in vehicle electronics field of fault detection, specifically a kind of monitoring of Vehicle Controller CAN network and display system for monitoring and show Vehicle Controller CAN network state.
Background technology
Along with modern automobile is more and more intelligent, becoming increasingly complex of function, information interaction in CAN between Vehicle Controller also gets more and more, many functions need several controller collaborate to complete, at this moment when a controller CAN breaks down, the function problem of other controller will be caused, many times even can threaten the safety of vehicle and chaufeur.Therefore how to design a Vehicle Controller CAN failure monitoring and display system, when Vehicle Controller CAN breaks down, detect fault in time, and remind chaufeur to be a very important problem always.
Summary of the invention
The object of this invention is to provide the monitoring of Vehicle Controller CAN network and the display system for monitoring and show Vehicle Controller CAN network state.To solve the problem of automobile CAN-bus safety, realize the real-time monitoring to automobile onboard controller's CAN.
The present invention is achieved by the following technical solution: a kind of Vehicle Controller CAN network monitoring and display system, it comprises with engine controller, gearbox control, the power CAN network of electrical steering lock controller and power steering controller and with car body controller, air spring control, the vehicle body CAN network of air-conditioner controller and multimedia controller, it is characterized in that: described power CAN network is connected with gateway controller with the mouth of vehicle body CAN network, the mouth of gateway controller is connected with the input end of the CAN network monitoring unit with supervisory control device network state and record trouble information, the mouth of described vehicle body CAN network is connected by the input end of instrument controller with the CAN network fault display unit that can receive also show bus failure message.
For high configuration machine motor-car, power CAN network of the present invention also includes starter motor controller, and stabilization system controller is or/and without key start-up connector.Vehicle body CAN network of the present invention also includes reversing radar controller, blind area monitor controller, seat controller, and car director of networking is or/and tire pressure controller.
Information interaction in CAN between Vehicle Controller is by periodically sending message to realize, and main thought of the present invention is exactly that the periodically packet of each controller of monitoring transmission is to judge the bus state of controller.When the message of not monitoring certain controller in 10 cycles and sending, then think this controller CAN fault.
Whole system is divided into two parts: CAN network monitoring unit and CAN network fault display unit.
CAN network monitoring unit is responsible for monitoring the network state of all controllers in CAN and record trouble information.The message that all for monitoring controller cycles send by it, as still do not monitored the message that certain controller sends within 10 cycles, then think this controller failure, simultaneously record trouble information, and this information is passed to CAN network fault display unit by CAN.
When key is OFF shelves, car load CAN network is in dormant state, at this moment in CAN without any information interaction.When key is ON shelves, car load CAN network just normally can carry out the mutual of information, and all Vehicle Controllers now can send message normally, so CAN network monitoring unit only just can carry out CAN monitoring when key is ON state.
Meanwhile, the normal working voltage of the Vehicle Controller on vehicle is generally 9-16V, and only in this operating voltage range, the Vehicle Controller guarantee normal cycle sends message.So when the cell pressure on vehicle is less than 9V or is greater than 16V, CAN network monitoring unit also can not start CAN monitoring function.
Therefore, CAN network monitoring unit is started to the condition of CAN monitoring function, just like giving a definition:
Key is ON shelves;
When key is OFF shelves, CAN is in dormant state, does not now need the bus state of supervisory control device.When key by OFF gear switch to ON shelves time, Vehicle Controller can be transitioned into mode of operation from dormant state.In this transition condition, each Vehicle Controller meeting initialization MCU, initialization CAN network receptor, then could normally in CAN network the cycle send message, for this transient process, the present invention also has clear and definite requirement to guarantee that controller is dealt into CAN message in bus in specific time, with the opening time of clear and definite CAN monitoring function.
①T
BUS-SATRT-MAX=100ms
After system start-up, controller sends CANmessage to the maximum time in bus, namely must send CANmessage in CAN within this time.But after system starts, controller needs some sensors of initialization, so there are some parameters to read from sensor timely in CANmessage, therefore can Use Defaults replacement, and the CANmessage signal in this time can be invalid.
②T
signalvalid=300ms
After system start-up in 300ms, the initialization of this Time Controller to corresponding sensor completes, so require that the signal in CANmessage now must be useful signal.
③T
StartMonitoring=1500ms
1500ms after system start-up, can start CAN network management system and monitor the message that the cycle sends.
Vehicle voltage is in normal operating range of voltages, is defined as follows:
Normal operating voltage: 9V – 16V.
The present invention using gateway controller as CAN network monitoring unit.Gateway, as the forwarding of each network signal and hub transmission, is connected into all CAN network of car load simultaneously, therefore can monitors the CAN state of Vehicle Controller on each network very easily simultaneously.
CAN network fault display unit is responsible for receiving and is resolved the failure message of CAN network monitoring unit transmission, and sends information to chaufeur timely, makes chaufeur take fault counter-measure in time, to avoid vehicle and human safety issues.
The present invention using instrument controller as CAN network fault display unit.Instrument, as the display window of automobile information, is the place that chaufeur most convenient the most directly can observe.Instrument can be shown to chaufeur in the very first time failure message as CAN network fault display unit, allow chaufeur understand the network failure state of automobile controller in time, to take corresponding measure, avoid vehicle and human safety issues.
Accompanying drawing explanation
Fig. 1 is principle of work block scheme of the present invention;
Fig. 2 is the diagram of circuit of CAN network monitoring unit monitoring state of network.
Be described in further detail the present invention by example below in conjunction with accompanying drawing, but following example is only the present invention's example wherein, do not represent the right protection scope that the present invention limits, the scope of the present invention is as the criterion with claims.
Detailed description of the invention
example 1
Shown in Fig. 1-2, this example is aimed at height and joins that the network architecture of car designs, Fig. 1 is the principle of work block scheme of Vehicle Controller CAN failure monitoring and display system, it comprises with engine controller, gearbox control, electrical steering lock controller, power steering controller, starter motor controller, stabilization system controller and the power CAN network without key start-up connector, and with car body controller, air spring control, air-conditioner controller, multimedia controller, reversing radar controller, blind area monitor controller, seat controller, the vehicle body CAN network of car director of networking and tire pressure controller.Described power CAN network is connected with gateway controller with the mouth of vehicle body CAN network, and the mouth of gateway controller is connected with the input end of the CAN network monitoring unit with supervisory control device network state and record trouble information; The mouth of described vehicle body CAN network is connected by the input end of instrument controller with the CAN network fault display unit that can receive also show bus failure message.
The Vehicle Controller that vehicle body CAN network and power CAN network comprise is listed respectively in figure, gateway is as the CAN network monitoring unit of Vehicle Controller CAN failure monitoring and display system, connect vehicle body CAN network and power CAN network respectively, monitor the CAN network state of these two all Vehicle Controllers of network, by judging that the cycle of each controller transmission message determines whether each Vehicle Controller has CAN network fault simultaneously.If monitor certain controller to occur CAN fault, then record failure message, and send failure message to CAN network fault display unit.Instrument is the CAN network fault display unit of native system, after receiving the failure message of CAN network monitoring unit, through correct parsing, is presented at by failure message in instrument, simultaneously with auditory tone cues chaufeur CAN network et out of order, needs to repair in time.
Fig. 2 is be the diagram of circuit of CAN network monitoring unit monitoring state of network, first will judge the entry condition of CAN monitoring function, whether key is ON shelves, then judges whether cell pressure is 9-16V, if two conditions are all satisfied, then start CAN network monitoring function above.At this moment CAN network monitoring unit can monitor the preiodic type message that in CAN network, all controllers send, if do not monitor the message that certain controller sends within 10 cycles, then think this controller network fault, record corresponding failure information, and send to CAN network display unit.
example 2
The low network architecture of joining car that is aimed at this example designs, join in the network architecture of car low, mainly comprise following Vehicle Controller, vehicle body CAN network: car body controller, air spring control, multimedia controller and by instrument controller with to receive and the input end of CAN network fault display unit of show bus failure message is connected.Power CAN network: engine controller, gearbox control, power steering controller, electrical steering lock controller.Gateway connects vehicle body CAN network and power CAN network respectively, is responsible for the route of signal.
To join car example identical with height, using the CAN network monitoring unit of gateway as Vehicle Controller CAN failure monitoring and display system, the CAN network fault of all Vehicle Controllers on monitoring bus, as found failure condition, record failure message, failure message is passed to instrument controller simultaneously.Instrument, as the CAN network fault display unit of native system, can point out chaufeur CAN network to break down timely.
Claims (3)
1. a Vehicle Controller CAN network monitoring and display system, it comprises with engine controller, gearbox control, the power CAN network of electrical steering lock controller and power steering controller and with car body controller, air spring control, the vehicle body CAN network of air-conditioner controller and multimedia controller, it is characterized in that: described power CAN network is connected with gateway controller with the mouth of vehicle body CAN network, the mouth of gateway controller is connected with the input end of the CAN network monitoring unit with supervisory control device network state and record trouble information, the mouth of described vehicle body CAN network is connected by the input end of instrument controller with the CAN network fault display unit that can receive also show bus failure message.
2. Vehicle Controller CAN network monitoring according to claim 1 and display system, it is characterized in that: described power CAN network also includes starter motor controller, stabilization system controller is or/and without key start-up connector.
3. Vehicle Controller CAN network monitoring according to claim 1 and display system, it is characterized in that: described vehicle body CAN network also includes reversing radar controller, blind area monitor controller, seat controller, car director of networking is or/and tire pressure controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739557.1A CN105398407A (en) | 2015-11-04 | 2015-11-04 | CAN bus fault monitoring and displaying system for vehicle-mounted controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510739557.1A CN105398407A (en) | 2015-11-04 | 2015-11-04 | CAN bus fault monitoring and displaying system for vehicle-mounted controller |
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| CN105398407A true CN105398407A (en) | 2016-03-16 |
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| CN201510739557.1A Pending CN105398407A (en) | 2015-11-04 | 2015-11-04 | CAN bus fault monitoring and displaying system for vehicle-mounted controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139926A (en) * | 2017-06-21 | 2017-09-08 | 北京汽车研究总院有限公司 | A kind of drive pattern control device, method and vehicle |
| CN107888472A (en) * | 2017-11-20 | 2018-04-06 | 北京新能源汽车股份有限公司 | A kind of vehicle network management method, control gateway, controller and automobile |
| CN108776469A (en) * | 2018-06-26 | 2018-11-09 | 北京长城华冠汽车技术开发有限公司 | Vehicle mounted communication module monitoring system and monitoring method |
| CN110971458A (en) * | 2019-11-26 | 2020-04-07 | 奇瑞汽车股份有限公司 | Whole car state monitoring devices |
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| CN101055648A (en) * | 2006-04-10 | 2007-10-17 | 宜兴市新屹仪器有限公司 | Vehicular real time intelligent failure monitoring device and method |
| CN102407816A (en) * | 2011-08-05 | 2012-04-11 | 交通运输部公路科学研究所 | Early warning system and detection method for safety performance of large bus based on controller area network (CAN) bus |
| CN202413617U (en) * | 2011-12-27 | 2012-09-05 | 上海汽车集团股份有限公司 | Vehicle fault display instrument based on vehicle-mounted internal rearview mirror |
| JP5138949B2 (en) * | 2007-02-07 | 2013-02-06 | 日立オートモティブシステムズ株式会社 | In-vehicle gateway device |
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2015
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101055648A (en) * | 2006-04-10 | 2007-10-17 | 宜兴市新屹仪器有限公司 | Vehicular real time intelligent failure monitoring device and method |
| JP5138949B2 (en) * | 2007-02-07 | 2013-02-06 | 日立オートモティブシステムズ株式会社 | In-vehicle gateway device |
| CN102407816A (en) * | 2011-08-05 | 2012-04-11 | 交通运输部公路科学研究所 | Early warning system and detection method for safety performance of large bus based on controller area network (CAN) bus |
| CN202413617U (en) * | 2011-12-27 | 2012-09-05 | 上海汽车集团股份有限公司 | Vehicle fault display instrument based on vehicle-mounted internal rearview mirror |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107139926A (en) * | 2017-06-21 | 2017-09-08 | 北京汽车研究总院有限公司 | A kind of drive pattern control device, method and vehicle |
| CN107888472A (en) * | 2017-11-20 | 2018-04-06 | 北京新能源汽车股份有限公司 | A kind of vehicle network management method, control gateway, controller and automobile |
| CN107888472B (en) * | 2017-11-20 | 2021-04-23 | 北京新能源汽车股份有限公司 | Vehicle network management method, control gateway, controller and automobile |
| CN108776469A (en) * | 2018-06-26 | 2018-11-09 | 北京长城华冠汽车技术开发有限公司 | Vehicle mounted communication module monitoring system and monitoring method |
| CN110971458A (en) * | 2019-11-26 | 2020-04-07 | 奇瑞汽车股份有限公司 | Whole car state monitoring devices |
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Application publication date: 20160316 |