CN109204193B - Method and system for quickly identifying automobile signals and parameters - Google Patents
Method and system for quickly identifying automobile signals and parameters Download PDFInfo
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- CN109204193B CN109204193B CN201811189586.5A CN201811189586A CN109204193B CN 109204193 B CN109204193 B CN 109204193B CN 201811189586 A CN201811189586 A CN 201811189586A CN 109204193 B CN109204193 B CN 109204193B
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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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Abstract
The invention provides a method for quickly identifying automobile signals and parameters, wherein the method comprises the following steps: connecting a CAN box with a CAN bus and/or an IN line of an automobile to acquire automobile body data; filtering the collected automobile body data; and analyzing the residual automobile body data after filtering, and accurately positioning the information such as the left-right turning information, the speed and the like of the automobile. The automobile body CAN data acquisition device has the advantages that the CAN box CAN be used for acquiring automobile body CAN data, and after the left-right turning information and the speed information of the automobile are accurately positioned, the information CAN be conveniently transmitted to devices such as ADAS or DMS and the like, so that advanced driving assistance is realized. Meanwhile, a vehicle type database can be set, so that other users can conveniently and directly download and match the vehicle type database.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a system for quickly identifying automobile signals and parameters, which are applied to the automatic driving requirement of an automobile.
Background
At present, many after-loading ADAS or DMS (advanced driver assistance system) products need to acquire signals and parameters of a vehicle body, perform a series of analysis and calculation on the acquired signals and parameters in combination with resources of the driver, and show results to the driver, so that the driver can perceive potential dangers in the fastest time, and the whole driving process becomes safer. The left-right turn signal and the vehicle speed are indispensable parameters of products such as ADAS or DMS. However, there are many signal parameters on the vehicle, and how to quickly and accurately position the left-right turn information and the vehicle speed information of the vehicle is the key point for realizing the advanced driving assistance system.
Disclosure of Invention
Currently, all automobiles generally turn left and right signals to go through an IN line, and the automobile speed goes through a GPS. Initially, the CAN was designed to communicate as a microcontroller in the automotive environment, exchanging information between the onboard electronic control units ECU to form an automotive electronic control network, and the vehicle speed traveled GPS.
Therefore, in order to solve at least the prior art problems, the present invention provides a method for rapidly identifying signals and parameters of a vehicle, wherein the method comprises the following steps:
connecting a CAN box with a CAN bus and/or an IN line of an automobile to acquire automobile body data;
filtering the collected automobile body data;
and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile.
The CAN box has the beneficial effect that the CAN data of the automobile body CAN be collected through the CAN box. The CAN data receiving and transmitting tool USB-CAN is used for connecting CANH of the USB-CAN with vehicle body CANH and connecting CANL of the USB-CAN with vehicle body CANL, so that data acquisition CAN be realized. After filtering and analyzing, the information of left and right turn and the vehicle speed of the vehicle can be accurately positioned, and then the information can be conveniently transmitted to the ADAS or DMS and other devices, thereby realizing advanced driving assistance.
In some embodiments, the specific method of left-right transfer information analysis:
collecting data twice, and removing the situation that only one data is collected in the two collection processes;
removing the condition of too few messages;
removing data with too few cycles and too large error of cycle interval;
removing data of which the right turn data is not always 0 when the left turn is performed;
removing data of which left turn data is not always 0 during right turn;
the remaining possible data are arranged and combined, and the user manually verifies which information is used.
The method has the advantages that because the vehicle cannot turn left and right at the same time, when the information is accurately positioned, the data that the data of turning right is not always 0 when the vehicle turns left can be removed; removing data of which left turn data is not always 0 during right turn; therefore, accurate positioning of left-right transfer information is realized.
In some embodiments, the specific method of vehicle speed data analysis:
removing the messages with too few total message numbers;
removing messages which are not 0 in the stop state;
removing the message with the overlarge message error value;
removing data with overlarge errors calculated according to the proportion from three different sampling points;
the remaining data is sorted and the user manually verifies which information is used.
The method has the advantages that the vehicle speed is certainly 0 in the stop state, so that a large amount of noise data can be quickly removed by removing the message which is not 0 in the stop state, and the accurate positioning is accelerated.
In some embodiments, the method for filtering the collected vehicle body data comprises:
external filtration: firstly, filtering the external condition which has obvious interference on the acquired data or has certain influence on the acquired data;
static filtration: in the case where the vehicle is stationary, the changed data is filtered out.
The beneficial effects are that, because under the static condition of vehicle, the data of turning left and right and speed of a motor vehicle data all can not change, so through outside filtration and static filtration, can filter more noise data, better accurate positioning arrives.
In some embodiments, the left-right turn information and the vehicle speed information of the positioned vehicle are matched with the model information of the vehicle, and a vehicle model database is established for other users to obtain.
The vehicle type database has the advantages that after the vehicle type database is arranged, the information of the vehicle type database can be uploaded to the server, a special auditor audits the vehicle type database, and the vehicle type database can be opened for all clients after the audit is passed. The customer only needs to download the vehicle type database matched with the vehicle of the customer into the CAN box.
Meanwhile, the invention also provides a nonvolatile computer storage medium which stores a computer executable program for executing the method for quickly identifying the automobile signals and parameters, wherein the storage medium comprises but is not limited to ROM, RAM, a common hard disk, a U disk or a floppy disk.
The CAN box has the advantages that the CAN box only needs to be used for storing corresponding programs, after the corresponding executable programs are stored through the storage medium, the corresponding executable programs CAN be conveniently installed in the CAN box, and therefore left and right turn signals and vehicle speed signals of an automobile CAN be rapidly identified.
Meanwhile, the invention also discloses a system for rapidly identifying automobile signals and parameters, wherein the system comprises a CAN box, a CAN bus and an upper computer;
the CAN box is connected with a CAN bus of the automobile and is configured to collect automobile body data;
the upper computer is configured to filter the acquired automobile body data; and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile.
The intelligent auxiliary driving system has the beneficial effects that through the matching of the CAN box and the upper computer, the left-right turning information and the vehicle speed information of the vehicle CAN be accurately positioned, so that the final intelligent auxiliary driving is realized.
In some embodiments, the CAN box is in communication connection with the ADAS or DMS device, and the CAN box communicates with the ADAS or DMS device through bus communication or RS232, and the CAN box transmits the left and right turn information and the vehicle speed information of the vehicle to the ADAS or DMS device.
The intelligent auxiliary driving system has the advantages that through the matching of the CAN box and the upper computer, the left-right turning information and the vehicle speed information of the vehicle CAN be accurately positioned, so that the corresponding information is transmitted to devices such as ADAS or DMS, and the final intelligent auxiliary driving is realized.
In some embodiments, the vehicle type management system further comprises a vehicle type database, wherein left and right turn information and vehicle speed information of the vehicle are stored in the vehicle type database and are associated with matching of model information of the vehicle, and the CAN box is connected with the vehicle type database in a communication mode.
The vehicle type database has the advantages that after the vehicle type database is arranged, the information of the vehicle type database can be uploaded to a server or a cloud, a special auditor audits the vehicle type database, and the vehicle type database can be opened for all clients to use after the audit is passed. The customer only needs to download the vehicle type database matched with the vehicle of the customer into the CAN box. With the increase of users, the vehicle model database can also increase, and basically all vehicle models can be covered.
Meanwhile, the invention also discloses a system for rapidly identifying automobile signals and parameters, which comprises a CAN box, an IN line and an upper computer, wherein the CAN box is connected with an automobile body switch and an automobile body sensor of an automobile through the IN line,
the CAN box is configured to collect vehicle body data via an IN line;
the upper computer is configured to filter the acquired automobile body data; and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile. .
The CAN bus has the beneficial effects that if corresponding signals of some vehicle types cannot be acquired IN the CAN bus, an IN line CAN be taken. And data acquisition is realized through an IN line. After filtering and analyzing, the information of left and right turn and the vehicle speed of the vehicle can be accurately positioned, and then the information can be conveniently transmitted to the ADAS or DMS and other devices, thereby realizing advanced driving assistance.
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 some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method for rapidly identifying signals and parameters of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system for a method of rapidly identifying signals and parameters of a vehicle according to an embodiment of the present invention
Fig. 3 is a flowchart of a specific method for analyzing left-right transfer information according to an embodiment of the present invention;
FIG. 4 is a flowchart illustrating a specific method for analyzing vehicle speed data according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The method for rapidly identifying the automobile signals and the parameters provided by the embodiment of the invention can solve at least one or more of the technical problems.
Fig. 1 shows a method for quickly identifying signals and parameters of a vehicle, wherein the method comprises the following steps:
s101: connecting a CAN box with a CAN bus and/or an IN line of an automobile to acquire automobile body data;
s102: filtering the collected automobile body data;
s103: and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile.
The CAN box CAN be used for collecting the CAN data of the automobile body. The CAN data receiving and transmitting tool USB-CAN is used for connecting CANH of the USB-CAN with vehicle body CANH and connecting CANL of the USB-CAN with vehicle body CANL, so that data acquisition CAN be realized. After filtering and analyzing, the information of left and right turn and the vehicle speed of the vehicle can be accurately positioned, and then the information can be conveniently transmitted to the ADAS or DMS and other devices, thereby realizing advanced driving assistance.
Meanwhile, as shown in fig. 2, the invention also discloses a system for rapidly identifying automobile signals and parameters, wherein the system comprises a CAN box 14, a CAN bus 11 and an upper computer 12.
The CAN box 14 is connected with a CAN bus 11 of the automobile, and the CAN box 14 is configured to collect automobile body data;
the upper computer 12 is configured to filter the acquired automobile body data; and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile.
Through the cooperation of the CAN box 14 and the upper computer 12, the left-right turn information and the vehicle speed information of the vehicle CAN be accurately positioned, so that the final intelligent auxiliary driving is realized.
Usually, the CAN box 14 is in communication connection with the ADAS or DMS device 15, the CAN box 14 and the ADAS or DMS device 15 communicate with each other through bus communication or RS232, and the CAN box 14 transmits the left and right turn information and the vehicle speed information of the vehicle to the ADAS or DMS device 15.
Through the cooperation of CAN box and host computer, the location that CAN be accurate is to the left and right sides of vehicle and is changeed information and speed of a motor vehicle information to transmit corresponding information to equipment such as ADAS or DMS, realize final intelligent driver assistance.
Meanwhile, the invention also comprises a vehicle type database, wherein the vehicle type database stores the left-right turning information and the vehicle speed information of the vehicle which are matched and associated with the model information of the vehicle, and the CAN box is in communication connection with the vehicle type database.
After the vehicle type database is arranged, the information of the vehicle type database can be uploaded to a server or a cloud end, a special auditor audits the vehicle type database, and the vehicle type database can be opened for all clients after the audit is passed. The customer only needs to download the vehicle type database matched with the vehicle of the customer into the CAN box. With the increase of users, the vehicle model database can also increase, and basically all vehicle models can be covered.
Meanwhile, a system for rapidly recognizing automobile signals and parameters according to the present invention may further include an IN line 16. The intelligent control system comprises a CAN box 11, an IN line 16 and an upper computer 12, wherein the CAN box 12 is connected with a body switch and a body sensor 13 of an automobile through the IN line 16,
the CAN box 14 is configured to collect vehicle body data via the IN line 16;
the upper computer is configured to filter the acquired automobile body data; and analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile. .
If corresponding signals of some vehicle models cannot be acquired IN the CAN bus, the IN line CAN be taken. And data acquisition is realized through an IN line. After filtering and analyzing, the information of left and right turn and the vehicle speed of the vehicle is accurately positioned, and then the information can be conveniently transmitted to the equipment 15 such as ADAS or DMS, so that advanced driving assistance is realized.
Specifically, as shown in fig. 3, a specific method of left-right transfer information analysis is as follows:
instructing to turn on the ACC, but not to start the engine, and turn off the turn signal;
prompting to turn a left turn light, and detecting CAN data in a left turn state;
detecting CAN data in a state of not hitting left and right turns;
prompting to turn a right turn lamp and detecting CAN data in a right turn state;
removing data with changed numerical values in a static state;
removing data which are not matched for the first time;
removing data with less message number;
removing data with less periodicity and larger periodicity error;
removing data with a value of not always 0 corresponding to the right turn when the left turn is performed;
removing data with a value of not always 0 corresponding to the left turn when the right turn is performed;
arranging possible data of left and right rotation, if one data is not available, prompting to start the engine, and performing matching again;
arranging and combining the data results which are possible to be converted from left to right;
listing three combinations that can be verified;
and sequentially verifying, if the vehicle speed is consistent, performing the next vehicle speed matching, and if the vehicle speed is inconsistent, restarting and acquiring by using an IN line.
Because the vehicle cannot turn left and turn right at the same time, when the information is accurately positioned, the data of which the left turn data is not always 0 can be removed; removing data of which left turn data is not always 0 during right turn; therefore, accurate positioning of left-right transfer information is realized.
Specifically, as shown in fig. 4, a specific method of vehicle speed data analysis:
prompting to start the engine, engaging a neutral gear and pulling up a hand brake;
detecting CAN data in a parking state;
prompting that the vehicle speed is stabilized at A km/h, and detecting CAN data;
prompting that the vehicle speed is stabilized at B km/h, and detecting CAN data;
prompting that the vehicle speed is stabilized at C km/h, and detecting CAN data;
removing data with less message number;
removing data larger than 0 in a stop state;
removing data with one byte being 0 in double-byte matching;
calculating A, B, C the average value of all messages;
error calculation is performed on the average value to obtain three error values: w1, W2, W3.
The data with larger error data in W1, W2 and W3 are removed.
Sorting the possible matching results;
the verification is carried out in sequence, and a manual verification mode can be adopted;
if the configuration is consistent with the CAN box, the configuration is transmitted to the CAN box in the next step
And if the data are inconsistent, restarting the next step, acquiring by using a vehicle speed sensor, and performing data transmission by matching with an IN line. .
Because the vehicle speed is definitely 0 in the stop state, a large amount of noise data can be quickly removed by removing the message which is not 0 in the stop state, and the accurate positioning is accelerated.
The method for filtering the collected automobile body data comprises the following steps:
external filtration: firstly, filtering the external condition which has obvious interference on the acquired data or has certain influence on the acquired data;
static filtration: in the case where the vehicle is stationary, the changed data is filtered out.
Because under the condition that the vehicle is static, the left and right turning data and the vehicle speed data are not changed, more noise data can be filtered through external filtering and static filtering, and the vehicle can be positioned accurately.
Meanwhile, the invention also provides a nonvolatile computer storage medium which stores a computer executable program for executing the method for quickly identifying the automobile signals and parameters, wherein the storage medium comprises but is not limited to ROM, RAM, a common hard disk, a U disk or a floppy disk.
The CAN box has the advantages that the CAN box only needs to be used for storing corresponding programs, after the corresponding executable programs are stored through the storage medium, the corresponding executable programs CAN be conveniently installed in the CAN box, and therefore left and right turn signals and vehicle speed signals of an automobile CAN be rapidly identified.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. A method for rapidly identifying automotive signals and parameters, wherein the method comprises the steps of:
the CAN box is connected with a CAN bus and/or an IN line of an automobile, a CAN data transceiving tool USB-CAN is used for connecting CANH of the USB-CAN with CANH of an automobile body, CANL of the USB-CAN is connected with CANL of the automobile body, data acquisition work is realized, and automobile body data are acquired;
filtering the collected automobile body data;
analyzing the residual automobile body data after filtering, and accurately positioning the left-right turning information and the speed information of the automobile;
the specific method for analyzing the left-right transfer information comprises the following steps:
collecting data twice, and removing the situation that only one data is collected in the two collection processes;
removing the condition of too few messages;
removing data with too few cycles and too large error of cycle interval;
removing data of which the right turn data is not always 0 when the left turn is performed;
removing data of which left turn data is not always 0 during right turn;
arranging and combining the remaining possible data, and manually verifying and determining which information is used by a user;
the specific method for analyzing the vehicle speed data comprises the following steps:
removing the messages with too few total message numbers;
removing messages which are not 0 in the stop state;
removing the message with the overlarge message error value;
removing data with overlarge errors calculated according to the proportion from three different sampling points;
sequencing the rest data, and manually verifying and determining which information is used by a user;
the method for filtering the collected automobile body data comprises the following steps:
external filtration: firstly, filtering the external condition which has obvious interference on the acquired data or has certain influence on the acquired data;
static filtration: under the condition that the vehicle is static, filtering out the changed data;
the positioned left-right turning information and the positioned vehicle speed information of the vehicle are matched with the model information of the vehicle, and a vehicle model database is established for other users to obtain by the CAN boxes.
2. A non-volatile computer storage medium storing a computer-executable program for performing the method for rapidly recognizing the car signals and parameters as set forth in claim 1, the storage medium comprising a ROM, a RAM, a general hard disk, a U-disk, or a floppy disk.
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| CN110588512A (en) * | 2019-09-25 | 2019-12-20 | 武汉极目智能技术有限公司 | Dangerous driving identification and early warning device, method and system |
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