CN115407236A - Method and device for testing high-speed transmission wire harness of vehicle, vehicle and storage medium - Google Patents
Method and device for testing high-speed transmission wire harness of vehicle, vehicle and storage medium Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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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
- B60R16/0207—Wire harnesses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The invention discloses a method and a device for testing a high-speed transmission wire harness of a vehicle, the vehicle and a storage medium. Wherein, the method comprises the following steps: acquiring operation data obtained by detecting the operation of the vehicle in the running process by a detector; acquiring a test signal sent by a controller to a high-speed data transmission harness of the vehicle based on the operation data; testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result; and determining the working state of the high-speed transmission wire harness based on the test result. The invention solves the technical problem of low efficiency of testing the high-speed wire harness.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a method and a device for testing a high-speed transmission wiring harness of a vehicle, the vehicle and a storage medium.
Background
At present, with the increasing of the vehicle-mounted data transmission quantity, the data transmission frequency and the data transmission rate present a rapidly increasing situation. The application of the high-speed data transmission wire harness as a main medium of signal transmission is more and more, and the high-speed data transmission wire harness is a key technology which is suitable for large data volume and high transmission rate of future automatic driving vehicles, so that the realization of the reliability test of the high-speed data transmission wire harness has important significance.
In the related art, the reliability of the high-speed transmission wire harness is only verified by a rack, the whole vehicle road test is not verified, and the problem of part of high-speed data transmission fed back cannot be reproduced through the rack verification, so that the technical problem of low efficiency of testing the high-speed wire harness exists.
Aiming at the technical problem of low testing efficiency of the high-speed data transmission wire harness in the prior art, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for testing a high-speed transmission wire harness of a vehicle, the vehicle and a storage medium, and at least solves the technical problem of low testing efficiency of the high-speed wire harness.
According to an aspect of an embodiment of the present invention, there is provided a method of testing a high-speed transmission harness of a vehicle, including: acquiring operation data obtained by detecting the operation of the vehicle in the running process by a detector; acquiring a test signal sent by a controller to a high-speed transmission harness of the vehicle based on the operation data; testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result; and determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working.
Optionally, acquiring, based on the operation data, a test signal sent by the controller to a high-speed data transmission harness of the vehicle includes: the test signal is acquired in response to the operational data being used to characterize the vehicle as being in a powered-on state.
Optionally, determining the operating state of the high-speed transmission line bundle based on the test result includes: and determining that the working state is a normal state in response to the test result not exceeding the threshold value.
Optionally, determining the operating state of the high-speed transmission harness based on the test result includes: and in response to the test result exceeding a threshold value, determining the working state as a fault state, wherein the vehicle enters a fault detection mode in the fault state.
Optionally, in response to the operating state being a fault state, prompt information output by the detector is obtained, where the prompt information is used to prompt the vehicle to enter a fault detection mode.
Optionally, in response to at least one of: controlling the vehicle to exit the fault detection mode; and according to the ending instruction acquired by the vehicle, the test result does not exceed the threshold value in the test periods of continuous target number, and the vehicle is in a power-off state.
According to another aspect of the embodiments of the present invention, there is also provided a test apparatus of a high speed transmission harness of a vehicle, including: a first acquisition unit configured to acquire operation data obtained by detecting an operation of the vehicle during running by the detector; a second acquisition unit for acquiring, based on the operation data, a test signal sent from the controller to a high-speed data transmission harness of the vehicle; the processing unit is used for testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result; and the determining unit is used for determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working.
According to another aspect of the embodiment of the invention, a vehicle is also provided. The vehicle is used for executing the testing method of the high-speed transmission wiring harness of the vehicle.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium. The computer readable storage medium includes a stored program, wherein the apparatus where the computer readable storage medium is located is controlled to execute the method for testing the high-speed transmission harness of the vehicle according to the embodiment of the present invention when the program is executed.
In the embodiment of the invention, operation data obtained by detecting the operation of a vehicle in the running process by a detector is obtained; acquiring a test signal sent by a controller to a high-speed data transmission harness of the vehicle based on the operation data; testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result; and determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working. In other words, according to the embodiment of the invention, the operation data detected by the detector in the running process of the vehicle is acquired, and the controller detects various performance data of the high-speed data transmission wire harness in real time according to different operation data of the vehicle to test the high-speed wire harness, so that the condition of the high-speed wire harness in the using process is rapidly and accurately confirmed, the technical problem of low testing efficiency of the high-speed wire harness is solved, and the technical effect of improving the testing efficiency of the high-speed wire harness is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of testing a high speed transmission harness of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a detection system of a method of testing a high speed transmission line bundle of a vehicle according to an embodiment of the present invention;
fig. 3 is a flowchart of a detection system control method of a test method of a high-speed transmission harness of a vehicle according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an apparatus for testing a high speed transmission harness of a vehicle according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
In accordance with an embodiment of the present invention, there is provided an embodiment of a method for testing a high speed transmission line bundle of a vehicle, it is noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions and that, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different than that herein.
Fig. 1 is a flowchart of a method for testing a high-speed transmission harness of a vehicle according to an embodiment of the present invention, where the vehicle includes a detector and a controller, where the detector may be a monitoring display, and may be configured to obtain operation data, such as data about whether the vehicle is powered on, and the controller may be a monitoring controller, and may be configured to control a running mode of the vehicle, such as a normal detection mode or a fault detection mode.
The method for testing the high-speed transmission line bundle of the vehicle as shown in fig. 1 comprises the following steps:
in step S102, operation data obtained by detecting the operation of the vehicle during running by the detector is acquired.
In the technical solution provided by step S102 of the present invention, when the vehicle is running, the detector may detect an operation of the vehicle in the running process, so as to obtain operation data, where the operation data may be used to characterize the operation of the vehicle in the running process, for example, the operation data obtained by the detector and selected by the user to start/stop detection in the operation interface of the detector may be the operation data that is obtained by the detector and selected by the user.
Optionally, a selection instruction triggered by the user to the operation control is received on a display of the detector, for example, a button for determining the test may be clicked by the user, and the monitoring display may obtain operation data representing the click operation, so as to achieve the purpose of obtaining the operation data in the monitoring display. It should be noted that the manner in which the detector obtains the operation data during the operation of the vehicle is not specifically limited.
For example, the monitoring display may be disposed at a suitable position of the vehicle, during the driving process of the vehicle, a user may click a determination test button on the monitoring display, acquire operation data for characterizing the start of detection, and start a switch component inside the monitoring display in response to the operation data, to operate the monitoring display to start a detection function, where the monitoring display may be disposed on a console of the vehicle, and it should be noted that the disposition position of the monitoring display on the vehicle is not specifically limited here.
And step S104, acquiring a test signal sent to the high-speed data transmission wire harness of the vehicle by the controller based on the operation data.
In the technical solution provided by step S104 of the present invention, a test signal sent by the controller to the high-speed transmission harness of the vehicle may be obtained, where the test signal may be used to control the test harness module, for example, the test signal may be issued to the test harness module in a form of a digital signal 0 or 1, where it should be noted that the state of the test signal is only an example, and no specific limitation is imposed on the transmission form and state of the test signal.
Optionally, when the vehicle is in a power-on state, the operation of the user may be collected through the monitoring display to obtain operation data, and the operation data is transmitted to the monitoring controller, so as to achieve a purpose that the monitoring controller receives the operation data from the monitoring display, for example, the operation data (which may be an instruction to start detection) from the monitoring display may be received through a signal receiving module in the monitoring controller, and based on the operation data, a test signal sent by the controller to the high-speed data transmission harness of the vehicle is obtained.
For example, when the vehicle is in operation, the monitoring display may transmit the acquired operation data to the monitoring controller through the local area internet, and the monitoring controller may transmit the test signal to the test harness module through the interface conversion device through a high-frequency signal such as ethernet or a coaxial cable (fakra).
And S106, testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result.
In the technical solution of step S106 in the present invention, when the test signal is received, the high-speed transmission harness of the vehicle may be tested based on the test signal to obtain a test result, where the test result may be a calculation result obtained by calculating the data related to the test high-speed harness.
Optionally, in the running process of the vehicle, the monitoring display can collect the operation of starting detection and selecting test data by a user, the monitoring display transmits the operation data to the monitoring controller, the monitoring controller transmits the test signal to the test harness module, and the test harness module receives the test signal, so that various test data of the high-speed transmission harness can be acquired in real time, the test data can be calculated, and a test result can be obtained.
For example, the test harness module may receive a test signal for testing a short circuit or an open circuit, and may obtain test data of the short circuit or the open circuit of the transmission harness in real time, so as to obtain a test result, for example, calculate a voltage or a current to obtain the test result.
For another example, in the running process of the vehicle, the test can be started, the required test data can be selected, the signal receiving module of the monitoring controller receives the operation data from the monitoring display, the monitoring controller issues the test signal to the test harness module, the vehicle can be in a conventional detection mode, the control chip of the high-speed transmission harness acquires the current test data in real time, and the acquired test data can be calculated to obtain the test result.
As an optional example, the test harness module may detect various data in real time, so that the test harness module enters a conventional detection mode state, the monitoring controller signal sending module starts to work and sends out a test signal periodically, the monitoring controller signal receiving module receives the test signal, the control chip performs judgment according to a current test data value, if the test data exceeds a threshold value, the test harness module enters a fault detection mode, detection of a continuous detection period is continuously performed in the fault detection mode, and the monitoring controller records the data of the fault mode to the storage device through a universal serial bus (USB 2.0); if the threshold value is not exceeded, the normal detection mode detection is continued, and the monitoring controller records the test result to the storage device through a universal serial bus (USB 2.0).
And step S108, determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working.
In the above technical solution of step S108 in the present invention, based on the test result, the working state of the high-speed transmission harness may be determined, where the working state may be used to represent a normal state or a fault state of the high-speed transmission harness, for example, the working state of the high-speed transmission harness at this time may be obtained as a fault state by judging that a voltage passing through the transmission harness exceeds a threshold value.
Optionally, the test result may be judged, whether the test result exceeds a threshold value is judged, and if not, the working state of the high-speed transmission harness may be determined to be a normal state; if the threshold value is exceeded, the working state of the high-speed transmission harness can be determined to be a fault state.
In the above steps S102 to S108, operation data obtained by detecting the operation of the vehicle in the running process by the detector is obtained; acquiring a test signal sent by a controller to a high-speed data transmission harness of the vehicle based on the operation data; testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result; and determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working. In other words, according to the embodiment of the invention, the operation data detected by the detector in the running process of the vehicle is acquired, and the controller detects various performance data of the high-speed data transmission wire harness in real time according to different operation data of the vehicle to test the high-speed wire harness, so that the condition of the high-speed wire harness in the using process is rapidly and accurately confirmed, the technical problem of low testing efficiency of the high-speed wire harness is solved, and the technical effect of improving the testing efficiency of the high-speed wire harness is realized.
The above-described method of this embodiment is further described below.
As an alternative embodiment, step S104, based on the operation data, acquiring a test signal sent by the controller to the high-speed data transmission harness of the vehicle, includes: the test signal is acquired in response to the operational data being used to characterize the vehicle as being in a powered-on state.
In this embodiment, whether the operation data is used for representing that the vehicle is in the power-on state is judged, if the vehicle is in the power-on state, the operation data of the start/stop test can be acquired through the monitoring display, the acquired operation data of the start/stop test is transmitted to the monitoring controller, and based on the acquired operation data, the monitoring controller sends a test signal to the test harness module, so that the purpose of acquiring the test signal is achieved.
Optionally, when the vehicle is in a power-on state, a user may turn on/off a test function of the entire vehicle high-speed data transmission harness by clicking a "start/stop test" button on the monitoring display, the monitoring display transmits the acquired operation data to the monitoring controller through the local area internet, and the detection controller transmits a start/stop test signal to the test harness module through a high-frequency signal.
For example, the controller can be deployed at a proper position of a vehicle, the interface converter, the test harness module, the power supply interface and other devices are connected, the vehicle is started to drive, a user can click the monitoring display to determine a test button in the process, a switch assembly of the monitoring display is turned on, the monitoring display can transmit an acquired operation data instruction to the controller, and the controller transmits a test signal to the test harness module through a high-frequency signal. It should be noted that, the placement position of the monitoring controller is not specifically limited, for example, the controller may also be effectively fixed to a sheet metal of a vehicle body.
As an alternative embodiment, step S108, determining the operating state of the high-speed transmission line bundle based on the test result, includes: and determining that the working state is a normal state in response to the test result not exceeding the threshold value.
In this embodiment, the test result may be obtained, and whether the test result exceeds the threshold value is determined, and if the test result is determined that the test result does not exceed the threshold value, the working state of the high-speed transmission harness may be determined to be a normal state, where the threshold value may be a preset value or a value determined according to an actual situation, and is not limited herein.
Optionally, in the embodiment, the test on the related data of the high-speed transmission harness may be started in the running process of the vehicle, the control chip of the high-speed transmission harness may obtain the test result by acquiring the test parameters in real time, and judge the calculation result, and if the calculation result obtained by the judgment does not exceed the threshold, the working state of the transmission harness at the time may be determined to be a normal state.
Optionally, in this embodiment, the test result may be obtained by calculating the test data through the control chip of the high-speed transmission harness, and the test result may be determined, if it is determined that the test result does not exceed the threshold, the detection in the next detection cycle may be continued in the conventional detection mode, it may be determined that the working state of the system at this time is a normal state, the system may stop the detection, and the test result may be recorded in the storage module to wait for an instruction of the user to start the detection next time.
For example, a control for performing an "open circuit/short circuit test" on a transmission harness may be selected on a monitoring display, a test signal for testing an open circuit or short circuit condition of the transmission harness may be received by a test harness module, a component control chip included in the test harness module may monitor test data of the transmission harness in real time based on the test signal, for example, voltage or current may be monitored in real time to obtain a test result, the test result may be compared with a threshold, if the voltage or current is within the threshold range, it may be determined that the transmission harness is in a normal state at this time, the monitoring controller may record the test result to a storage module, and transmit the monitoring data to the monitoring display, the system may stop detecting, and wait for an instruction for a user to start detection next time.
For example, a control for "insertion loss test" of the transmission harness may be selected on the monitoring display, a test harness module may receive a test signal for testing the insertion loss condition of the transmission harness, a component control chip included in the test harness module may detect a signal input by the signal sending end and a signal received by the signal receiving end, the signal frequency received and sent is calculated by using an insertion loss detection principle, a test result is compared with a preset threshold value, if the test result does not exceed the threshold value, it is determined that the insertion loss is not problematic, the working state at this time is a normal state, the monitoring controller may record the test result to the storage module, and transmit the monitoring data to the monitoring display, the system may stop detecting, and wait for an instruction for the user to start detection next time.
It should be noted that, the testing of open circuit or short circuit and insertion loss is only an example, and no specific limitation is imposed on the problem to be monitored and the test data on the transmission line bundle.
As an alternative embodiment, step S108, based on the test result, determining the operating state of the high-speed transmission line bundle includes: and in response to the test result exceeding a threshold value, determining the working state as a fault state, wherein the vehicle enters a fault detection mode in the fault state.
In this embodiment, whether the test result exceeds the threshold value or not can be judged through the obtained test result, if the test result is judged to exceed the threshold value, the working state of the high-speed transmission harness can be determined to be a fault state, in the fault state, the vehicle can enter a fault detection mode to continuously perform detection in a continuous detection period, the fault data of the time can be recorded to the storage module, and the user can conveniently take and analyze the fault data.
Optionally, in a conventional detection mode, the high-speed transmission harness of the vehicle may be tested, the test harness module may obtain a test result through calculation of test data, and when the test result may be used to represent that the working state of the high-speed transmission harness of the vehicle is a normal state, the detection may be stopped, and a user waits for a next detection instruction to be started; the method comprises the steps that a high-speed transmission wire harness of a vehicle is tested in a normal state, a test wire harness module can obtain a test result through calculation of test data, when the test result is used for representing that the working state of the high-speed transmission wire harness of the vehicle is a fault state, a fault detection mode can be entered, the test wire harness module can detect the fault data in a continuous detection period spontaneously at the moment, and a user does not need to wait for an instruction for starting detection next time.
For example, the test harness module receives a test signal of a short circuit, the control chip of the built-in component of the test harness module can monitor the test data of the high-speed transmission harness in real time, for example, the current is monitored in real time, the current value can be obtained to be 5A, when the threshold value is 1A, the judgment test result is larger than the threshold value, and the current on the transmission harness is too large, so that the short circuit of the high-speed transmission harness at the moment can be determined, the harness is in a fault state, at the moment, the system enters a fault detection mode, and the test harness module can spontaneously detect the current in a continuous detection period.
As an alternative embodiment, in step S108, in response to that the operating state is the failure state, the prompt information output by the detector is obtained, where the prompt information is used to prompt the vehicle to enter the failure detection mode.
In this embodiment, when the test result is judged to exceed the threshold value, the working state is the fault state, the vehicle enters the fault detection mode, the monitoring controller may transmit information to the monitoring display, and the monitoring display outputs prompt information for prompting the user that the vehicle is in the fault state, where the prompt information may be an alarm instruction including fault information, it should be noted that this is only an example, and specific limitations are not imposed on the content and form of the prompt information, for example, the detection display may also transmit the fault information of the specific position of the wire harness fault or the data of the wire harness fault problem in the form of images or characters.
Optionally, the test harness module may determine whether the test result exceeds a threshold value based on the test result, and if the test result exceeds the threshold value, the monitoring controller may transmit the fault data and the fault information to the monitoring display for a user to call and analyze the fault reason, for example, the monitoring controller may transmit the fault information to the monitoring display through a local area internet (lin signal), and it should be noted that a transmission form in which the monitoring controller transmits the fault information to the monitoring display is not specifically limited here.
For example, the test harness module may detect the current of the high-speed data transmission harness, so that the current is too large, and at this time, it may be determined that the harness short circuit occurs, and the system enters a fault detection mode, and in the fault detection mode, the test harness module may obtain a specific position of the harness short circuit through calculation, and may transmit fault information to the monitoring display through the monitoring controller, for example, the monitoring display may display the position of the harness short circuit, the current magnitude of the short circuit, and the like.
As an alternative embodiment, step S108 is in response to at least one of: controlling the vehicle to exit the fault detection mode: and (4) acquiring an ending instruction by the vehicle, wherein in the test periods of continuous target number, the test result does not exceed the threshold value, and the vehicle is in a power-off state.
In the embodiment, whether the test result exceeds the threshold value is judged based on the test result, if the test result exceeds the threshold value, the working state of the high-speed transmission wire harness can be determined to be a fault state, the vehicle enters a fault detection mode, and when the vehicle is in a power-off state, the vehicle exits the fault detection mode in response to the condition that the vehicle is in the power-off state; or when an ending instruction for ending detection is acquired, the system can be controlled to exit the fault detection mode; or in the test period of the continuous target number, if the test result does not exceed the threshold, the system exits the fault detection mode, wherein the target number may be a preset value, and the specific value of the target number is not limited here.
It should be noted that the foregoing is only an example of the exit condition of the failure detection mode, and the exit condition is not specifically limited.
For example, it may be determined whether the test result exceeds a threshold, if the test result exceeds the threshold, the system may enter a fault detection mode, and continue to perform detection in the fault detection mode, and if none of the test results exceeds the threshold in consecutive test periods, the system may be controlled to exit the fault detection mode, for example, if none of the test results exceeds the threshold in consecutive 10 test periods, the system may be controlled to exit the fault detection mode.
According to the embodiment of the invention, the operation data detected by the detector in the running process of the vehicle is obtained, and the controller detects various performance data of the high-speed data transmission wire harness in real time according to different operation data of the vehicle to test the high-speed wire harness, so that the condition of the high-speed wire harness in the using process is rapidly and accurately confirmed, the technical problem of low testing efficiency of the high-speed wire harness is further solved, and the technical effect of improving the testing efficiency of the high-speed wire harness is realized.
Example 2
The technical solutions of the embodiments of the present invention will be illustrated below with reference to preferred embodiments.
The application of the high-speed transmission wire harness as a signal transmission medium is wide, so that the reliability verification of the high-speed data transmission wire harness is very important, and the high-speed data transmission wire harness is of great significance for helping researchers to improve future automatic driving vehicles and high-speed transmission.
In the current market, a cable detection (VCT) method is used for detecting the open circuit and short circuit conditions of a high-speed data transmission wire harness in real time by carrying a vehicle control unit. The test method is used for calculating by judging the pulse coefficients of open circuit and short circuit of a signal receiving end, the sending time of pulse waves, the receiving time of the pulse waves and the propagation speed. The interface of the controller hardware of the cable detection method is single, and products with different interfaces cannot be verified, so that the cable detection method is not universal; because the method can only test open circuit and short circuit, the detection performance is single, and other performance data of high-speed data transmission are not considered, such as: the problem of low testing efficiency of the high-speed wire harness is not reasonably solved due to characteristic impedance, insertion loss, return loss and the like.
In a related art, an ethernet testing method for a vehicle-mounted controller is proposed, which tests a high-speed data transmission harness only by using ethernet as a main medium for signal transmission, but the method does not consider a test for a coaxial cable as a signal transmission medium, and does not involve tests of a plurality of samples, so that the testing efficiency is low, and the testing range is narrow.
In another related technology, a train ethernet testing method is also proposed, which is only based on ethernet to limit the method to an ethernet testing system, but the method is not limited to single data testing, and tests multiple items of data of a train to realize the comprehensiveness of ethernet testing, thereby improving the safety factor of the train, but still has the problem that a single high-speed data transmission harness is used as a signal transmission medium.
In order to solve the problems, the invention provides a method for testing a high-speed transmission wire harness, which comprehensively tests data such as open circuit, short circuit, insertion return loss, return loss and the like of the high-speed data transmission wire harness of a vehicle by taking the high-speed data transmission wire harness of an Ethernet and a coaxial cable as a signal transmission medium.
Embodiments of the present invention are further described below.
Fig. 2 is a schematic diagram of a detection system of a test method of a high-speed transmission harness of a vehicle according to an embodiment of the invention, the system including: a monitoring controller 201, a test display 202, an interface conversion device 203, a test harness module 204 and a storage device 205.
By way of example, the major components contained within the monitoring controller 201 may include: the chip supporting the cable detection and return loss, insertion loss and characteristic impedance test method, the signal sending module, the signal receiving module, public hardware interfaces such as ethernet, coaxial cable (fakra), universal Serial Bus (USB), and the like, and the monitoring display 202 includes the following main components: a Light Emitting Diode (LED) display screen, a switch assembly, a control module, and the like, and the main components included in the interface conversion device 203 may include: ethernet, coaxial cable), etc., the main components contained in the test harness module 204 may include: corresponding test cables, female test connectors, internal connectors, etc.
Here, examples of a part of components included in the monitor display or the like of the detection system are not limited to all of the components.
In this embodiment, when the vehicle is in a power-on state, a user starts a test function, the monitoring display may transmit operation data for starting to detect to the monitoring controller 201, the monitoring controller may transmit a received instruction to the test harness module 204 through the component interface conversion device 203 of the monitoring controller, and if the test result does not exceed the threshold, the monitoring controller 201 may store the test result in the storage device 205 and transmit the current monitoring data to the detection display 202; if the test result exceeds the threshold, a failure detection mode may be entered, and the detection controller 201 may store failure data to the storage device 205 and may transmit failure information or alarm instructions to the monitoring display 202.
Optionally, when the vehicle is in a power-on state, the user starts the test function, and the monitoring display 202 may transmit the acquired operation data to the monitoring controller 201 as a signal of the local area internet.
Alternatively, when the monitoring controller 201 obtains operation data that the user needs to start detecting, the included component interface converting device 203 may transmit a test signal to the test harness module 204 through a high frequency signal such as ethernet or coaxial cable (fakra).
Optionally, the test harness module 204 executes a detection instruction issued by the interface conversion device 203 of the monitoring controller 201, wherein fig. 3 is a flowchart of a detection system control method of a test method of a high-speed transmission harness of a vehicle according to an embodiment of the present invention, and as shown in fig. 3, the detection control method may include the following steps:
step S301, the test harness module obtains a test result through calculation of the test data.
In the technical solution provided by the above step S301 of the present invention, various detection data of the testing harness module are detected in real time, where the detection data may be selected by a user on the monitoring display, or selected by a user on a part of the monitoring display, and it should be noted that the selection mode of the detection data is not specifically limited here.
Optionally, the user issues an operation instruction for starting detection, the monitoring controller acquires operation data from the monitoring display and issues a test signal to the test harness module, and the test harness module can start to detect various data of the high-speed data transmission harness required by the user in real time and can calculate the test data to obtain a test result.
For example, the insertion loss test result can be calculated according to the loss ratio, and can be calculated by the following formula:
L1＝V2/V1
wherein, V1 may be used to indicate the frequency of the signal input by the signal transmitting end, V2 may be used to indicate the frequency of the signal received by the signal receiving end, and L1 is used to indicate the test result of the insertion loss.
For example, the test result of the return loss can be calculated according to the loss ratio, and can be calculated by the following formula:
L2＝V3/V1
wherein, V1 may be used to indicate the frequency of the signal input by the signal transmitting end, V3 may be used to indicate the frequency of the signal received by the signal receiving end, and L2 is used to indicate the test result of the return loss.
Step S302, judging the test result in the conventional detection mode.
In the technical solution provided in step S302 of the present invention, the determination of the test result in the normal detection mode can be performed by comparing the test result with the threshold, and determining whether the test result exceeds the threshold.
Optionally, when the monitoring controller 201 enters the normal monitoring mode state, the signal sending module starts to work, periodically sends out the test signal, the signal receiving module receives the test signal, and the control chip determines whether the current test result exceeds the threshold.
Step S303, stopping detection and waiting for the user to issue a next detection instruction.
In the technical solution provided in step S303 of the present invention, it is determined whether the test result exceeds the threshold, and if not, it may be indicated that the test result does not exceed the threshold.
Optionally, the user initiates an operation instruction for starting the test, the test is performed in a conventional detection mode to obtain a test result, whether the test result exceeds a threshold value or not is judged, if the test result does not exceed the threshold value, the working state of the high-speed wire harness can be indicated to be normal, the test wire harness module can stop the detection, wait for the user to issue the detection instruction again, and then perform the detection again.
For example, it is determined whether the insertion loss test result exceeds the threshold, 11 is a set threshold, the signal transmitting end inputs the signal V1 with the frequency of 20, the signal receiving end receives the signal V2 with the frequency of 200, and the insertion loss calculation result is 10 at this time, so that L1 is less than or equal to 11, it may be determined that the insertion loss does not exceed the threshold at this time, the system may stop detecting, and wait for the user to issue a next detection instruction, it needs to be noted that 11 here is an example threshold, and no specific limitation is imposed on the size of the threshold, and the threshold may be selected or preset according to an actual situation.
For another example, whether the callback loss test result exceeds the threshold value is judged, 12 is a set threshold value, the signal sending end inputs a signal V1 with the frequency of 30, the signal receiving end receives a signal V3 with the frequency of 300, at this time, the return loss calculation result is 10, so that L2 is not greater than 12, it can be judged that the return loss does not exceed the threshold value at this time, the system can stop detecting, and wait for the user to issue a next detection instruction, it should be noted that 12 here is an example threshold value, and no specific limitation is made on the size of the threshold value, and the value can be selected or preset according to actual situations.
Step S304, entering a failure mode and continuing detection.
In the technical solution provided by step S304 of the present invention, it is determined whether the test result exceeds the threshold, and if so, it may indicate that the test result exceeds the threshold.
Optionally, a user initiates an operation instruction for starting testing, the testing is performed in a conventional detection mode to obtain a test result, whether the test result exceeds a threshold value or not is judged, if the test result exceeds the threshold value, the high-speed wiring harness working state fault can be indicated, the fault detection mode can be entered, and the testing wiring harness module can spontaneously detect fault data in a plurality of continuous detection periods in the fault detection mode.
For example, when the current or voltage is used to determine whether the wiring harness is open or short, and the result is open or short, the fault position on the wiring harness may be calculated by using a cable detection (VCT) working principle, where the cable detection may include the following steps: the signal sending end outputs pulse waves, and if the impedance of the receiving end is matched, no pulse waves are sent back to the sending end; if the receiving end is open-circuited, a forward pulse (the reflection coefficient is 1) is reflected back to the sending end; if the receiving end is short-circuited, a reverse pulse (reflection coefficient-1) will be reflected back to the transmitting end.
Alternatively, the position of the open circuit (short circuit) can be calculated by the following formula:
wherein, T1 can be used to represent the sending time of the system recording pulse wave, T2 can be used to represent the receiving time of the reflected pulse wave, V can be used to represent the propagation speed, and D is used to represent the position of the open circuit (short circuit).
For another example, if the test result is a short circuit of the wire harness, the transmission time 2s of the pulse wave and the receiving time 3s of the reflected pulse wave are obtained through cable detection, and the measurement error Δ x may be 0.1 according to the propagation speed 2 m/s. And (3) calculating the position (D) of the short circuit to be 1.1, and obtaining the position of the short circuit at the position of 1.1 m of the length of the wire harness.
Optionally, in the fault detection mode, the detection of the insertion loss and the return loss is consistent with the detection steps in the normal mode.
For example, in the normal detection mode, if the insertion loss (L1) exceeds a threshold, the fault detection mode may be entered and detection for a continuous monitoring period may be performed.
For another example, 11 is a set threshold, a signal V1 with a frequency of 20 is input to the signal transmitting end, the signal receiving end receives a signal V2 with a frequency of 240, and the insertion loss calculation result is 12 at this time, so that L1 is greater than or equal to 11, it can be determined that the insertion loss exceeds the threshold at this time, a fault detection mode is entered, and detection of a continuous monitoring period can be performed.
For example, in the normal detection mode, if the return loss (L2) exceeds a threshold, the fault detection mode may be entered and detection for a continuous monitoring period may be performed.
For another example, 12 is a set threshold, the signal transmitting end inputs the signal V1 with the frequency of 30, the signal receiving end receives the signal V3 with the frequency of 600, and the return loss calculation result is 20 at this time, so L2 is greater than or equal to 12, it can be determined that the return loss exceeds the threshold at this time, the fault detection mode is entered, and detection of the continuous monitoring period can be performed.
Optionally, the supervisory controller 201 issues storage test data and fault information to the storage device 205 via an internal component pass serial bus.
For example, the test harness module detects data to judge whether the test result exceeds a threshold value, if the test results in the conventional detection mode do not exceed the threshold value, the test result of the test period can be recorded into the storage module, and the detection can be stopped; if the test result exceeds the threshold value, namely the vehicle enters a fault detection mode, the monitoring controller can still continuously detect corresponding data of the high-speed transmission wire harness at the moment, generate data of the fault mode and store the data to the storage device, and a user can analyze the problem of error data by acquiring data information of the storage device.
Optionally, the high-speed data transmission harness testing system of the vehicle enters a fault detection mode, and the condition for controlling the vehicle to exit the fault detection mode needs to satisfy at least one of the following conditions: the vehicle acquires an instruction sent by a user to finish a fault detection mode; the test result in failure mode does not exceed the threshold for a target number of consecutive test cycles; the vehicle is in a powered down state.
Alternatively, the monitoring controller 201 transmits the detection data and the failure information to the monitoring display through a local area internet (lin signal).
Optionally, if the test result does not exceed the threshold, the monitoring controller transmits the current monitoring data to the monitoring display for prompting the user to complete one detection, and the working state of the system at the time can be judged to be a normal state; if the test result exceeds the threshold value, the detection controller transmits the fault information and the alarm instruction to the detection display for warning the user of the system fault, and the system fault is checked in time, so that the working state of the system at the moment can be judged to be a fault state.
The embodiment obtains operation data obtained by user operation of a vehicle in the running process through a monitoring display, a monitoring controller receives a detection starting instruction from the monitoring display, an interface conversion device issues a command to a test harness module to start detection data, the vehicle enters a conventional detection mode at the moment, whether a test result in the mode exceeds a threshold value or not is judged, if not, the vehicle is continuously in the conventional detection mode to continue detection in the next period, the test result is put into a storage device to be recorded, and the detection data is issued to the monitoring display; if the fault detection mode exceeds the threshold value, the fault detection mode is entered, data detection is continued, fault information and problem data are placed in the storage device from the monitoring controller to the monitoring display, and the detection data and the fault information are issued to the monitoring display, so that the condition of the high-speed wire harness in the using process is rapidly and accurately confirmed, the technical problem of low testing efficiency of the high-speed wire harness is solved, and the technical effect of improving the testing efficiency of the high-speed wire harness is achieved.
Example 3
According to the embodiment of the invention, the testing device for the high-speed transmission wire harness of the vehicle is also provided. It should be noted that the testing device for the high-speed transmission harness of the vehicle can be used for executing the testing method for the high-speed transmission harness in embodiment 1.
Fig. 4 is a schematic diagram of a vehicle control apparatus according to an embodiment of the invention. As shown in fig. 4, the test apparatus 400 for a high-speed transmission harness of a vehicle may include: a first acquisition unit 402, a second acquisition unit 404, a processing unit 406 and a determination unit 408.
A first acquisition unit 402 configured to acquire operation data obtained by detecting an operation of the vehicle during running by the detector.
A second obtaining unit 404, configured to obtain, based on the operation data, a test signal sent by the controller to a high-speed data transmission harness of the vehicle.
And the processing unit 406 is used for testing the high-speed transmission wiring harness of the vehicle based on the test signal to obtain a test result.
And a determining unit 408, configured to determine, based on the test result, an operating state of the high-speed transmission harness, where the operating state is a normal state or a fault state in which the high-speed transmission harness is operated.
Optionally, the second obtaining unit 404 includes: the first obtaining module is used for responding to the operation data for representing that the vehicle is in a power-on state and obtaining a test signal.
Optionally, the determining unit 408 comprises: and the first determining module is used for determining that the working state is a normal state in response to the test result not exceeding the threshold value.
Optionally, the determining unit 408 comprises: and the second determination module is used for determining that the working state is a fault state in response to the test result exceeding a threshold value, wherein the vehicle enters a fault detection mode in the fault state.
Optionally, the second determining module includes: and the first determining submodule is used for responding to the working state as a fault state and acquiring prompt information output by the detector, wherein the prompt information is used for prompting the vehicle to enter a fault detection mode.
Optionally, the second determining module further includes: a second determination submodule for controlling the vehicle to exit the fault detection mode in response to at least one of; and according to the instruction acquired by the vehicle, the test result exceeds the threshold value in the test periods of continuous target number, and the vehicle is in a power-off state.
In the embodiment of the invention, the first acquisition unit is used for acquiring operation data obtained by detecting the operation of a vehicle in the running process by a detector, wherein the operation data is whether a user starts the high-speed data transmission harness detection, the second acquisition unit is used for acquiring a test signal sent to the high-speed data transmission harness of the vehicle by a controller based on the operation data acquired by the first acquisition unit, the signal for the user to start the detection is transmitted to the test harness module and can be used for obtaining a test result, the processing unit is used for testing the high-speed transmission harness of the vehicle based on the test signal to obtain the test result, the processed test result is whether the test result exceeds a threshold value, and the determining unit is used for determining the working state of the high-speed transmission harness based on the test result, wherein the working state is a normal state or a fault state to which the high-speed transmission harness belongs to work, so that the working state of the high-speed data transmission harness is determined, the technical problem of low testing efficiency of the high-speed harness is solved, and the technical effect of improving the high-speed testing efficiency of the harness is realized.
Example 4
According to the embodiment of the invention, the vehicle is also provided, and the vehicle is used for executing the testing method of the high-speed transmission wiring harness of the vehicle.
Example 5
According to an embodiment of the present invention, there is also provided a computer-readable storage medium including a stored program, wherein the program executes the method for testing a high-speed transmission harness of a vehicle described in embodiment 1.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, a division of a unit may be a division of a logic function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is substantially or partly contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method of testing a high speed transmission line beam of a vehicle, the vehicle comprising a detector and a controller, the method comprising:
acquiring operation data obtained by detecting the operation of the vehicle in the running process by the detector;
acquiring a test signal sent out to a high-speed data transmission harness of the vehicle by the controller based on the operation data;
testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result;
and determining the working state of the high-speed transmission wire harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wire harness during working.
2. The method of claim 1, wherein obtaining a test signal issued by the controller to a high speed data transmission harness of the vehicle based on the operational data comprises:
and acquiring the test signal in response to the operation data representing that the vehicle is in a power-on state.
3. The method of claim 1, wherein determining the operating state of the high speed transmission line bundle based on the test results comprises:
and determining that the working state is the normal state in response to the test result not exceeding a threshold value.
4. The method of claim 1, wherein determining the operating state of the high speed transmission line bundle based on the test results comprises:
and in response to the test result exceeding a threshold value, determining that the working state is the fault state, wherein the vehicle enters a fault detection mode in the fault state.
5. The method of claim 4, further comprising:
and responding to the working state as the fault state, and acquiring prompt information output by the detector, wherein the prompt information is used for prompting the vehicle to enter the fault detection mode.
6. The method of claim 4, further comprising:
in response to at least one of: controlling the vehicle to exit the fault detection mode; and acquiring an end instruction by the vehicle, wherein the vehicle is in a power-off state when the test result does not exceed the threshold value in the continuous target number of test periods.
7. A test apparatus for a high speed transmission line beam of a vehicle, the vehicle including a detector and a controller, comprising:
a first acquisition unit configured to acquire operation data obtained by detecting an operation of the vehicle during running by the detector;
a second acquisition unit configured to acquire, based on the operation data, a test signal sent from the controller to a high-speed data transmission harness of the vehicle;
the processing unit is used for testing the high-speed transmission wire harness of the vehicle based on the test signal to obtain a test result;
and the determining unit is used for determining the working state of the high-speed transmission wiring harness based on the test result, wherein the working state is a normal state or a fault state of the high-speed transmission wiring harness during working.
8. A vehicle, characterized by being adapted to carrying out the method of any one of claims 1 to 6.
9. A computer-readable storage medium, comprising a stored program, wherein the program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the method of any one of claims 1-6.
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