CN110930656A - Method and system for judging vehicle warning condition based on vehicle CAN data - Google Patents
Method and system for judging vehicle warning condition based on vehicle CAN data Download PDFInfo
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- CN110930656A CN110930656A CN201911176344.7A CN201911176344A CN110930656A CN 110930656 A CN110930656 A CN 110930656A CN 201911176344 A CN201911176344 A CN 201911176344A CN 110930656 A CN110930656 A CN 110930656A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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Abstract
A method and a system for judging vehicle warning condition based on automobile CAN data are provided, the method comprises the following steps: acquiring multiple driving data of an automobile in real time through an automobile CAN bus; collecting a plurality of items of position data of the automobile in real time; the driving data and the position data are coded and encrypted and then are sent to a vehicle-mounted terminal data receiving gateway; the vehicle-mounted terminal data receiving gateway decrypts and decodes the data and then sends the data to the alarm condition analysis unit; the alarm condition analysis unit judges whether each data exceeds a preset value or not, and if so, the automobile is in an alarm condition; if not, the automobile is not in a warning condition; when the alarm condition is judged to occur, the alarm condition is stored in the storage unit and the owner is informed; and when the alarm does not occur (the alarm is finished), storing each data in the storage unit, and continuing the circulation operation. According to the invention, the running data of the vehicle CAN be acquired in real time through the CAN bus, and the position data such as longitude and latitude and the like CAN be acquired through the Beidou positioning chip, so that whether an alarm condition exists or not CAN be judged, a warning CAN be provided for a user in real time, and the driving experience and the safety performance CAN be improved.
Description
Technical Field
The invention belongs to the technical field of vehicle warning condition judgment, and particularly relates to a method and a system for judging vehicle warning condition based on automobile CAN data.
Background
With the increase of automobiles, the accidents of the automobiles are more and more, and government departments, enterprises and public institutions and individuals want to reduce the accidents of the automobiles as much as possible.
The automobile CAN bus data comprises all data on an automobile instrument panel, and in order to reduce automobile accidents and judge the warning condition in advance, the automobile CAN bus data CAN be used for judging the warning condition of the automobile.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for determining the warning condition of a vehicle based on the CAN data of the vehicle, the method comprising the steps of:
acquiring multiple driving data of an automobile in real time through an automobile CAN bus;
collecting a plurality of items of position data of the automobile in real time;
the driving data and the position data are coded and encrypted and then are sent to a vehicle-mounted terminal data receiving gateway;
the vehicle-mounted terminal data receiving gateway decrypts and decodes the data and then sends the data to the alarm condition analysis unit;
the alarm condition analysis unit judges whether each data exceeds a preset value or not, and if so, the automobile is in an alarm condition; if not, the automobile is not in a warning condition;
when the alarm condition is judged to occur, the alarm condition is stored in the storage unit and the owner is informed;
and when the alarm condition is judged not to occur any more, storing all the data into the storage unit, and continuing the cyclic operation.
Preferably, the driving data includes vehicle speed, engine temperature, tire pressure, door window state, ACC state, remaining oil amount, fuel consumption, total mileage, and mileage.
Preferably, the location data includes latitude and longitude, GPS speed, altitude.
Preferably, the alarm conditions comprise overspeed alarm conditions, fatigue driving alarm conditions, abnormal alarm conditions of tires, abnormal oil consumption alarm conditions and overhigh temperature alarm conditions.
Preferably, the notifying the owner of the vehicle includes:
and sending alarm prompt information to the mobile terminal of the vehicle owner.
The invention also provides a system for judging the warning condition of the vehicle based on the CAN data of the vehicle, which comprises the following components:
the CAN data acquisition unit is used for acquiring multiple driving data of the automobile in real time;
the position positioning unit is used for acquiring a plurality of items of position data of the automobile in real time;
the wireless communication unit is used for coding and encrypting the driving data and the position data and then sending the coded and encrypted driving data and position data to a vehicle-mounted terminal data receiving gateway;
the vehicle-mounted terminal data receiving gateway is used for decrypting and decoding the data and then sending the data to the alarm condition analysis unit;
the alarm condition analysis unit is used for judging whether each datum exceeds a preset value or not, and if so, giving an alarm condition to the automobile; if not, the automobile is not in a warning condition;
and the storage unit is used for storing the alarm condition when the alarm condition is judged to occur and storing each data when the alarm condition is judged not to occur any more.
And the vehicle informing unit is used for informing the vehicle owner when the alarm condition is judged to occur.
Preferably, the system also comprises a user operation unit used for managing the alarm and data by the user.
According to the method and the system for judging the warning condition of the vehicle based on the CAN data of the vehicle, the driving data and the position data of the vehicle CAN be acquired in real time through the CAN bus, so that whether the warning condition exists or not CAN be judged, a warning CAN be provided for a user in real time, and the driving experience and the safety performance CAN be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for determining vehicle warning based on vehicle CAN data according to the present invention;
fig. 2 is a schematic structural diagram of a system for determining vehicle warning based on the CAN data of the vehicle according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Referring to fig. 1, in an embodiment of the present application, the present application provides a method for determining a vehicle warning situation based on car CAN data, the method including the steps of:
s1: and acquiring multiple driving data of the automobile in real time through an automobile CAN bus.
In this step, the driving data includes a vehicle speed, an engine temperature, a tire pressure, a door and window state, an ACC state, a remaining oil amount, a fuel consumption, a total mileage, a mileage and the like, and the vehicle CAN bus CAN acquire these data in real time.
S2: a plurality of items of position data of the automobile are collected in real time.
In this step, the position data includes longitude and latitude, GPS speed, altitude, and the like, and may be acquired by a Beidou satellite positioning system or a GPS positioning system installed on the vehicle.
S3: and coding and encrypting the driving data and the position data and then sending the coded and encrypted driving data and position data to a vehicle-mounted terminal data receiving gateway.
In this step, the data are encoded and encrypted and then sent to the vehicle-mounted terminal data receiving gateway for subsequent analysis.
S4: and the vehicle-mounted terminal data receiving gateway decrypts and decodes the data and then sends the data to the alarm condition analysis unit.
In this step, the vehicle-mounted terminal data receiving gateway decrypts and decodes the driving data and the position data and sends the decoded data to the alarm analysis unit, so that the alarm analysis unit can perform subsequent judgment and analysis.
S5: the alarm condition analysis unit judges whether each data exceeds a preset value or not, and if so, the automobile is in an alarm condition; if not, the automobile is not in a warning condition.
In the step, the alarm condition analysis unit receives the data, correspondingly compares the data with pre-stored data, and judges that the automobile is in an alarm condition if the data exceeds a preset value; if not, the automobile is judged not to be in a warning condition. The warning conditions comprise overspeed warning conditions, fatigue driving warning conditions, abnormal tyre warning conditions, abnormal oil consumption warning conditions, overhigh temperature warning conditions and the like.
S6: and when the alarm condition is judged to occur, the alarm condition is stored in the storage unit and the owner is informed.
In this step, if the alarm analyzing unit judges that an alarm occurs, the alarm is saved to a storage unit, such as the time, degree, kind, travel data, and location data when the alarm occurs, and the owner is notified.
The mode of informing the owner of the vehicle can be to send alarm information to the mobile terminal of the owner of the vehicle, and can also inform the user through sound alarm, light alarm and the like.
S7: and when the alarm condition is judged not to occur, storing all the data into the storage unit, and continuing the cyclic operation.
In this step, when it is determined that the alarm does not occur, the respective data may be saved to the storage unit, and the above-described loop operation may be continued.
As shown in fig. 2, in the embodiment of the present application, the present application further provides a system for determining a warning condition of a vehicle based on CAN data of the vehicle, where the system includes:
the CAN data acquisition unit is used for acquiring multiple driving data of the automobile in real time;
the position positioning unit is used for acquiring a plurality of items of position data of the automobile in real time;
the wireless communication unit is used for coding and encrypting the driving data and the position data and then sending the coded and encrypted driving data and position data to a vehicle-mounted terminal data receiving gateway;
the vehicle-mounted terminal data receiving gateway is used for decrypting and decoding the data and then sending the data to the alarm condition analysis unit;
the alarm condition analysis unit is used for judging whether each datum exceeds a preset value or not, and if so, giving an alarm condition to the automobile; if not, the automobile is not in a warning condition;
and the storage unit is used for storing the alarm condition when the alarm condition is judged to occur and storing each data when the alarm condition is judged not to occur.
The informing automobile unit is used for informing the owner when the alarm condition is judged to occur; .
And the user operation unit is used for managing the alarm condition and data by the user.
The system for judging the warning condition of the vehicle based on the automobile CAN data CAN operate the method for judging the warning condition of the vehicle based on the automobile CAN data.
The following are various warning judgment processes:
(1) abnormal warning of tire pressure
The alarm condition analysis unit firstly sets a normal range [ L, H ] of the tire pressure value and the abnormal duration shortest time length T0, and generates abnormal alarm condition of the tire pressure when the tire pressure read from the CAN data acquisition unit is higher than H or lower than L and the continuous time length is longer than T0; and when the tire pressure is restored to the normal value range and the continuous time length is greater than T0, ending the abnormal tire pressure warning condition.
(2) Over-speed warning situation
The warning condition analysis unit sets continuous overspeed duration T1, the vehicle-mounted terminal data receiving gateway reads the vehicle speed from the CAN data acquisition unit, the longitude and latitude from the position positioning unit and reports the vehicle speed and the longitude and latitude to the warning condition analysis unit, the warning condition analysis unit judges whether the road grade and the vehicle are overspeed according to the longitude and latitude and map data, if the continuous overspeed duration exceeds T1, overspeed warning condition is generated, and when the speed is reduced and the continuous duration exceeds T1, the overspeed warning condition is ended.
(3) Fatigue driving warning
The alarm analysis unit sets a fatigue driving duration T2 and a rest duration T3, the vehicle-mounted terminal data receiving gateway reads a vehicle speed from the CAN data acquisition unit and gives an alarm to the alarm analysis unit, if the vehicle speed is greater than 0 and the duration is greater than T2, a fatigue driving alarm is generated, and when the vehicle speed is 0 and the duration is greater than T3, the fatigue driving alarm is ended.
(4) High temperature warning
The method comprises the steps that an alarm analysis unit sets an engine highest temperature threshold A0, an in-vehicle highest temperature threshold A1 and a high temperature duration T4, a vehicle-mounted terminal data receiving gateway reads the temperature of an engine and the temperature in the vehicle from a CAN data acquisition unit and reports the temperature of the engine and the temperature in the vehicle to the alarm analysis unit, if the temperature of the engine is greater than A0 and the duration is greater than T4, the high-temperature alarm of the engine is generated, and if the temperature of the engine is lower than A0 and the duration is greater than T4, the high-temperature alarm of the engine is ended. Similarly, whether or not to generate and end the in-vehicle high-temperature warning condition is judged by using the in-vehicle temperature and the in-vehicle temperature threshold value A1.
(5) Abnormal fuel consumption alarm
The alarm condition analysis unit sets a maximum oil consumption threshold value C0 of one hundred kilometers and a duration time T5, the vehicle-mounted terminal data receiving gateway reads the residual oil quantity and the total mileage of the vehicle from the CAN data acquisition unit, reports the residual oil quantity and the total mileage of the vehicle to the alarm condition analysis unit, calculates the oil consumption, and generates an abnormal oil consumption alarm condition if the residual oil quantity and the total mileage of the vehicle are greater than C0 and the duration time is greater than T5. And when the oil consumption is less than C0 and the duration is longer than T5, ending the abnormal oil consumption alarm condition.
According to the method and the system for judging the warning condition of the vehicle based on the CAN data of the vehicle, the driving data and the position data of the vehicle CAN be acquired in real time through the CAN bus, so that whether the warning condition exists or not CAN be judged, a warning CAN be provided for a user in real time, and the driving experience and the safety performance CAN be improved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A method for judging vehicle alarm condition based on automobile CAN data is characterized by comprising the following steps:
acquiring multiple driving data of an automobile in real time through an automobile CAN bus;
collecting a plurality of items of position data of the automobile in real time;
the driving data and the position data are coded and encrypted and then are sent to a vehicle-mounted terminal data receiving gateway;
the vehicle-mounted terminal data receiving gateway decrypts and decodes the data and then sends the data to the alarm condition analysis unit;
the alarm condition analysis unit judges whether each data exceeds a preset value or not, and if so, the automobile is in an alarm condition; if not, the automobile is not in a warning condition;
when the alarm condition is judged to occur, the alarm condition is stored in the storage unit and the owner is informed;
and when the alarm condition is judged not to occur any more, storing all the data into the storage unit, and continuing the cyclic operation.
2. The method of determining vehicle alarm based on vehicle CAN data of claim 1, wherein the driving data comprises vehicle speed, engine temperature, tire pressure, door window status, ACC status, remaining oil, fuel consumption, total mileage, and mileage.
3. The method of determining vehicle alarm based on automotive CAN data of claim 1 wherein said location data includes latitude and longitude, GPS speed, altitude.
4. The method of claim 1, wherein the alarms include overspeed alarm, fatigue driving alarm, abnormal tire alarm, abnormal fuel consumption alarm, and over-temperature alarm.
5. The method of claim 1 wherein notifying the owner of the vehicle comprises:
and sending alarm prompt information to the mobile terminal of the vehicle owner.
6. The utility model provides a system for judge vehicle alarm condition based on car CAN data which characterized in that, the system includes:
the CAN data acquisition unit is used for acquiring multiple driving data of the automobile in real time;
the position positioning unit is used for acquiring a plurality of items of position data of the automobile in real time;
the wireless communication unit is used for coding and encrypting the driving data and the position data and then sending the coded and encrypted driving data and position data to a vehicle-mounted terminal data receiving gateway;
the vehicle-mounted terminal data receiving gateway is used for decrypting and decoding the data and then sending the data to the alarm condition analysis unit;
the alarm condition analysis unit is used for judging whether each datum exceeds a preset value or not, and if so, giving an alarm condition to the automobile; if not, the automobile is not in a warning condition;
and the storage unit is used for storing the alarm condition when the alarm condition is judged to occur and storing each data when the alarm condition is judged not to occur any more.
And the vehicle informing unit is used for informing the vehicle owner when the alarm condition is judged to occur.
7. The system for determining vehicle alarm based on CAN data of vehicle of claim 6, further comprising a user operation unit for user management of alarm and data.
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Cited By (1)
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Application publication date: 20200327 |