CN112158148B - Input signal self-adaptive identification method and system - Google Patents
Input signal self-adaptive identification method and system Download PDFInfo
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- CN112158148B CN112158148B CN202010859426.8A CN202010859426A CN112158148B CN 112158148 B CN112158148 B CN 112158148B CN 202010859426 A CN202010859426 A CN 202010859426A CN 112158148 B CN112158148 B CN 112158148B
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- 239000003921 oil Substances 0.000 description 3
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
Abstract
The invention provides an input signal self-adaptive identification method and a system, wherein the method comprises the following steps: in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator lamp is received, the signal source of the indicator lamp is judged to be a CAN bus, and functional application is carried out according to the CAN signal; if the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not; if the AD signal is received and the AD signal is in the effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal; and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal. Based on the scheme, the workload and the maintenance cost of the calibration service of the automobile instrument indicating lamp can be reduced, the accuracy of self-adaptive identification and calibration is guaranteed, and the high-medium-low difference requirements of platforms of different types or platforms of the same type of the whole automobile are met.
Description
Technical Field
The invention relates to the field of automobile signal processing, in particular to an input signal self-adaptive identification method and system.
Background
The automobile instrument ECU, as an appearance part of the entire automobile electric control system, often needs to display some physical signals on the entire automobile, such as an indicator light, fault information, function information, a function menu, and the like. Generally, the corresponding input of the automobile instrument is determined, but with the development of market and the change of customer requirements, the automobile instrument assembly needs to be compatible with more whole automobile changes as much as possible under the condition of no assembly change, and some uncertain requirement inputs are adapted to simplify the automobile instrument scheme and the commodity supply scheme. Uncertain demand inputs include, but are not limited to: switching of inputs and outputs of the same signal, difference in signal types of signal sources of the same signal, and the like.
When a vehicle instrument is developed, the use scene of the whole vehicle cannot be completely determined, the input signal sources of the same vehicle instrument indicating lamp may not be unique among platforms of different vehicle types and among platforms of the same vehicle type, and there are several signal input modes, so that the self-adaptive identification of compatible signal input and output is required, and the self-adaptive identification of compatible signal input of different signal sources is also required.
Even if the traditional automobile instrument assembly introduces a mature whole automobile calibration technology to distinguish the two types of signals, the calibration service is too huge due to too large samples of the number and the types of the signals, so that the workload is large in practice, the maintenance cost is high, and errors are easy to occur.
Disclosure of Invention
In view of this, embodiments of the present invention provide an input signal adaptive identification method and system, so as to solve the problems of large workload, high maintenance cost and easy error in the conventional automobile instrument calibration service.
In a first aspect of the embodiments of the present invention, there is provided an input signal adaptive identification method, including:
in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator lamp is received, the signal source of the indicator lamp is judged to be a CAN bus, and functional application is carried out according to the CAN signal;
if the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the AD signal is received and the AD signal is in the effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
In a second aspect of the embodiments of the present invention, there is provided an input signal adaptive recognition system, including:
the acquisition module is used for acquiring an instrument indicator light signal in the power-on self-test process of the automobile instrument;
the identification module is used for judging that the signal source of the indicator lamp is a CAN bus when receiving a CAN message signal corresponding to the indicator lamp of the instrument and performing function application according to the CAN signal; when the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the AD signal is received and the AD signal is in the effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
In the embodiment of the invention, the input signal source is judged based on the self-adaptive identification of the input signal, and corresponding calibration and function application are carried out according to the signal type, so that the workload and the maintenance cost can be reduced, the accuracy of a calibration result is ensured, and the problems of large workload, high maintenance cost and high possibility of error of the conventional automobile instrument calibration service are solved. The automobile instrument assembly height difference input method can be suitable for the problems caused by the input of different automobile type platforms or the high-low difference requirements of the same automobile type platform, is compatible with more influences caused by the difference of the whole automobile as much as possible under the conditions that the assembly is not changed, the supply drawing number is not changed and the part number is not changed, reduces the management difficulty and cost of the whole automobile on parts, the after-sale service cost of the whole automobile and the like, and optimizes the supply management and market performance of the automobile instrument assembly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of an adaptive input signal identification method according to an embodiment of the present invention;
fig. 2 is another schematic flow chart of an adaptive identification method for an input signal according to an embodiment of the present invention;
fig. 3 is another schematic flow chart of an adaptive identification method for an input signal according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an input signal adaptive identification system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons skilled in the art without any inventive work shall fall within the protection scope of the present invention, and the principle and features of the present invention shall be described below with reference to the accompanying drawings.
The terms "comprises" and "comprising," when used in this specification and claims, and in the accompanying drawings and figures, are intended to cover non-exclusive inclusions, such that a process, method or system, or apparatus that comprises a list of steps or elements is not limited to the listed steps or elements.
Referring to fig. 1, fig. 1 is a schematic flow chart of an adaptive identification method for an input signal according to an embodiment of the present invention, including:
s101, in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator lamp is received, judging that the signal source of the indicator lamp is a CAN bus, and performing function application according to the CAN signal;
in the starting process of the automobile, the automobile instrument can perform key power-on self-checking and detect whether the function of the instrument is normal. At this in-process, pilot lamp and the dial plate of motormeter regulation can carry out the self-checking, specifically are: the specified indicator light is turned on for 5s and then turned off, and then real-time display is performed according to input; the specified dial is displayed from 0 scale to full scale, then back to 0 scale, and then displayed in real time according to the input. Besides the function of detecting the instrument, the ECU can enter a ready state by utilizing the self-checking time, and the finished automobile signal enters the ready and stable states. The self-checking function is the core condition of the self-adaptive identification of the application.
The CAN message signal is a CAN bus message signal, and all nodes in the CAN bus CAN sense the transmitted message and CAN selectively respond to the message. The CAN bus is monitored in the whole power-on self-detection process, and if a CAN message signal of a specific instrument is received, subsequent function application such as diagnosis, display and the like is carried out according to the CAN signal.
S102, if the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the CAN message signal corresponding to the specific instrument indicator lamp is not received, subsequent corresponding identification processing is carried out according to whether an AD signal (analog-digital signal) is received or not.
S103, if the AD signal is received and the AD signal is in an effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
the valid range is used for judging the validity of the AD signal. If the vehicle connected sensor has AD converted signals, the possible signal range is [1000,4000] mV, but the disconnection may be 0V which is normally grounded or 5V which is normally higher.
And S104, if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
The IO hard line signal refers to a signal directly connected to a chip pin for transmission, and is generally a high level or a low level. And when the signal source is determined to be an IO hard wire, performing subsequent function application through the IO hard wire signal.
In one embodiment, taking the low oil pressure indicator as an example, the low oil pressure indicator has three signal source inputs: CAN bus, AD signal and IO hard wire. After the self-adaptive identification method, whether CAN signals, AD signals or IO hard-line signals are used CAN be judged
The automobile instrument monitors the CAN bus and the AD signal all the time in the whole electrifying self-checking process, if the oil pressure signal of the CAN bus is received in the whole process from the beginning to the end of the electrifying self-checking process of the automobile instrument, the CAN signal is judged to be an effective input signal, and the subsequent application function is carried out according to the CAN signal; if the CAN bus engine oil pressure signal is not received in the whole process from the beginning to the end of the electrification self-detection of the automobile instrument, judging whether an AD signal is received and whether the AD signal is in a normal signal range, and if the AD signal is in an effective range, judging that the AD signal is effective; and if the AD signal is not in the normal signal range, judging the IO hard wire as a valid input signal. The engine oil pressure low indicator light signal is collected from the IO hard wire of the whole vehicle, and the subsequent application function is carried out according to the IO hard wire signal.
It CAN be understood that, as shown in fig. 3 (a), when the type of the input signal of the indicator light of the automobile instrument is a CAN signal and an IO hard-line signal, in the power-on self-test process of the automobile instrument, if a CAN bus signal is received, it is determined that the CAN signal is an effective input signal, and subsequent function application is performed according to the CAN signal; and if the CAN bus signal is not received, judging that the CAN signal is an invalid input signal, acquiring the input signal from the IO hard wire of the whole vehicle, and performing subsequent function application according to the IO hard wire signal.
It can be understood that, as shown in fig. 3 (b), when the type of the input signal of the indicator light of the automobile instrument is an AD signal and an IO hard-line signal, in the power-on self-test process of the automobile instrument, if the AD signal is received and the AD signal is in an effective range, it is determined that the signal source of the indicator light is the AD signal, and the function application is performed according to the AD acquisition signal; and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
It CAN be understood that, as shown in fig. 3 (c), when the type of the input signal of the indicator light of the automobile instrument is the CAN signal and the AD signal, in the power-on self-test process of the automobile instrument, if the CAN bus signal is received, the CAN signal is determined to be an effective input signal, and the subsequent function application is performed according to the CAN signal; and if the CAN bus signal is not received, judging that the CAN signal is an invalid input signal, and performing subsequent function application according to the AD acquisition signal.
Based on the method provided by the embodiment of the invention, the problem that the whole automobile requires the function of the automobile instrument indicator lamp to adapt to the input of different configuration requirements of the whole automobile is solved. The automobile instrument assembly can be compatible with more influences caused by vehicle differences under the conditions of constant assembly, constant supply drawing number and constant part number, and the functional scheme of the automobile instrument indicator lamp and the commodity supply management are simplified by adapting to the requirement input of vehicle difference.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 4 is a schematic structural diagram of an input signal adaptive identification system according to an embodiment of the present invention, where the system includes:
the acquisition module 410 is used for acquiring an instrument indicator light signal in the power-on self-test process of the automobile instrument;
the identification module 420 is used for judging that the signal source of the indicator light is a CAN bus when receiving a CAN message signal corresponding to the indicator light of the instrument, and performing function application according to the CAN signal; when the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the AD signal is received and the AD signal is in the effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; 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 (4)
1. An input signal adaptive identification method, comprising:
in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator lamp is received, the signal source of the indicator lamp is judged to be a CAN bus, and functional application is carried out according to the CAN signal;
if the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the AD signal is received and the AD signal is in the effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal;
when the input signal type of the automobile instrument indicating lamp is a CAN signal and an AD signal, in the power-on self-test process of the automobile instrument, if a CAN bus signal is received, the CAN signal is judged to be an effective input signal, and subsequent function application is carried out according to the CAN signal;
and if the CAN bus signal is not received, judging that the CAN signal is an invalid input signal, and performing subsequent function application according to the AD acquisition signal.
2. The method according to claim 1, wherein in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator is received, it is determined that the indicator signal source is a CAN bus, and performing functional application according to the CAN signal further comprises:
when the input signal types of the automobile instrument indicating lamp are CAN signals and IO hard wire signals, in the power-on self-test process of the automobile instrument, if CAN bus signals are received, the CAN signals are judged to be effective input signals, and follow-up function application is carried out according to the CAN signals;
and if the CAN bus signal is not received, judging that the CAN signal is an invalid input signal, acquiring the input signal from the IO hard wire of the whole vehicle, and performing subsequent function application according to the IO hard wire signal.
3. The method according to claim 1, wherein in the power-on self-test process of the automobile instrument, if a CAN message signal corresponding to an instrument indicator is received, it is determined that the indicator signal source is a CAN bus, and performing functional application according to the CAN signal further comprises:
when the type of the input signal of the automobile instrument indicating lamp is an AD signal and an IO hard wire signal, in the power-on self-test process of the automobile instrument, if the AD signal is received and the AD signal is in an effective range, judging that the signal source of the indicating lamp is the AD signal, and performing function application according to the AD acquisition signal;
and if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal.
4. An input signal adaptive identification system comprising:
the acquisition module is used for acquiring an instrument indicator light signal in the power-on self-test process of the automobile instrument;
the identification module is used for judging that the signal source of the indicator lamp is a CAN bus when receiving a CAN message signal corresponding to the indicator lamp of the instrument and performing function application according to the CAN signal; when the CAN message signal corresponding to the instrument indicator lamp is not received, judging whether an AD signal is received or not;
if the AD signal is received and the AD signal is in an effective range, judging that the signal source of the indicator light is the AD signal, and performing functional application according to the AD acquisition signal;
if the AD signal is not received or the received AD signal is not in the effective range, judging the IO hard wire as effective signal input, and performing function application according to the IO hard wire signal;
when the input signal type of the automobile instrument indicating lamp is a CAN signal and an AD signal, in the power-on self-test process of the automobile instrument, if a CAN bus signal is received, the CAN signal is judged to be an effective input signal, and subsequent function application is carried out according to the CAN signal;
and if the CAN bus signal is not received, judging that the CAN signal is an invalid input signal, and performing subsequent function application according to the AD acquisition signal.
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| CN113242639B (en) * | 2021-04-22 | 2024-04-26 | 东风电驱动系统有限公司 | Soft and hard dual-control and mutual isolation protection circuit of automobile instrument alarm lamp and working method |
| CN116184306B (en) * | 2023-05-05 | 2023-06-23 | 深圳市锐深科技有限公司 | CAN communication isolation device for resisting pulse group and interference elimination method |
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| US9381813B2 (en) * | 2014-03-24 | 2016-07-05 | Harman International Industries, Incorporated | Selective message presentation by in-vehicle computing system |
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| CN202345414U (en) * | 2011-11-30 | 2012-07-25 | 东风襄樊仪表系统有限公司 | Automobile electronic combination instrument matched with engine conforming China stage-4 emission standard |
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