CN116436834A

CN116436834A - Vehicle-mounted Ethernet testing device, method, equipment and storage medium

Info

Publication number: CN116436834A
Application number: CN202310491896.7A
Authority: CN
Inventors: 孟令帅; 王浩
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-07-14

Abstract

The disclosure provides a vehicle-mounted Ethernet test device, a method, equipment and a storage medium, relates to the technologies of automatic test, fault diagnosis and the like in the field of circuits, and can be used for intelligent driving and unmanned driving. Wherein, on-vehicle ethernet testing arrangement includes: the connecting assembly is used for connecting equipment to be tested or a wire harness to be tested, wherein the equipment to be tested is equipment with a vehicle-mounted Ethernet communication function, and the wire harness to be tested is a wire harness for transmitting data in the vehicle-mounted Ethernet; the test assembly is connected with the connection assembly and comprises a vehicle-mounted Ethernet physical layer chip; and the control component is connected with the test component and used for controlling the vehicle-mounted Ethernet physical layer chip to perform physical layer test of the equipment to be tested in physical layer test of the equipment to be tested, and controlling the vehicle-mounted Ethernet physical layer chip to perform test of open circuit fault and/or short circuit fault of the wire harness to be tested in fault test of the wire harness to be tested. Therefore, the one-machine multi-purpose of the vehicle-mounted Ethernet test is realized, and the hardware cost is reduced.

Description

Vehicle-mounted Ethernet testing device, method, equipment and storage medium

Technical Field

The disclosure relates to automatic testing, fault diagnosis and other technologies in the circuit field, and can be used for intelligent driving and unmanned driving, in particular to a vehicle-mounted Ethernet testing device, a method, equipment and a storage medium.

Background

On the vehicle, the sensor is connected with the domain control component through a wire harness and communicated with the domain control component through an on-board Ethernet. In order to improve the safety of the vehicle, the vehicle is required to be tested in relation to the vehicle-mounted Ethernet communication.

In a laboratory, sensors, a domain control assembly and a wire harness related to the on-board Ethernet on a vehicle are tested through a plurality of large instruments respectively.

However, the above method requires a plurality of instruments, and is costly.

Disclosure of Invention

The present disclosure provides an in-vehicle ethernet testing apparatus, method, device, and storage medium for reducing hardware cost of in-vehicle ethernet testing.

According to a first aspect of the present disclosure, there is provided an in-vehicle ethernet testing device, comprising:

the device to be tested is a device with a vehicle-mounted Ethernet communication function, and the wire harness to be tested is a wire harness for transmitting data in the vehicle-mounted Ethernet;

the test assembly is connected with the connection assembly and comprises a vehicle-mounted Ethernet physical layer chip;

and the control component is connected with the test component and is used for controlling the vehicle-mounted Ethernet physical layer chip to perform physical layer test of the equipment to be tested in physical layer test of the equipment to be tested, and controlling the vehicle-mounted Ethernet physical layer chip to perform test of open circuit fault and/or short circuit fault of the wire harness to be tested in fault test of the wire harness to be tested.

According to a second aspect of the present disclosure, there is provided a vehicle-mounted ethernet testing method applied to the vehicle-mounted ethernet device of the first aspect, the vehicle-mounted ethernet testing method including:

determining a test mode;

if the test mode is equipment test, controlling a vehicle-mounted Ethernet physical layer chip in the test assembly to perform physical layer test on equipment to be tested connected with the connection assembly to obtain a test result of the equipment to be tested, wherein the equipment to be tested is equipment with a vehicle-mounted Ethernet communication function;

and if the test mode is a wire harness test, controlling the vehicle-mounted Ethernet physical layer chip to test short-circuit faults and/or open-circuit faults of the wire harness to be tested connected with the connecting assembly, and obtaining a fault test result of the wire harness to be tested, wherein the wire harness to be tested is a wire harness for transmitting data in the vehicle-mounted Ethernet.

According to a third aspect of the present disclosure, there is provided an electronic device comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the in-vehicle ethernet testing method of the second aspect.

According to a fourth aspect of the present disclosure, there is provided an in-vehicle apparatus including the in-vehicle ethernet testing device of the first aspect.

According to a fifth aspect of the present disclosure, there is provided a vehicle including the in-vehicle apparatus of the fourth aspect.

According to a sixth aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the in-vehicle ethernet testing method of the second aspect.

According to a seventh aspect of the present disclosure, there is provided a computer program product comprising: a computer program stored in a readable storage medium, from which it can be read by at least one processor of an electronic device, the at least one processor executing the computer program causing the electronic device to perform the in-vehicle ethernet testing method of the second aspect.

According to the technical scheme provided by the disclosure, the vehicle-mounted Ethernet testing device comprises a connecting component, a testing component and a control component, wherein the testing component comprises a vehicle-mounted Ethernet physical layer chip. Because the vehicle-mounted Ethernet physical layer chip has the functions of performing physical layer test on equipment with the vehicle-mounted Ethernet communication function, performing short-circuit fault test on a wire harness transmitting data in the vehicle-mounted Ethernet and performing short-circuit fault test on the wire harness, the vehicle-mounted Ethernet equipment can be used for testing the equipment and the wire harness: in the test of the equipment to be tested, the connecting component is connected with the equipment to be tested, and the control component controls the vehicle-mounted Ethernet physical layer chip to perform physical layer test on the equipment to be tested; in the test of the wire harness to be tested, the connecting component is connected with the wire harness to be tested, and the control component controls the vehicle-mounted Ethernet physical layer chip to test the open circuit fault and/or the short circuit fault of the wire harness to be tested. Therefore, the one-machine multi-purpose of the vehicle-mounted Ethernet testing device is realized, and the hardware cost of the vehicle-mounted Ethernet testing is effectively reduced.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The drawings are for a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic diagram of an application scenario to which embodiments of the present disclosure are applicable;

FIG. 2 is a schematic diagram according to a first embodiment of the present disclosure;

FIG. 3 is a schematic diagram according to a second embodiment of the present disclosure;

FIG. 4 is a schematic diagram according to a third embodiment of the present disclosure;

FIG. 5 is a schematic diagram according to a fourth embodiment of the present disclosure;

FIG. 6 is a schematic diagram according to a fifth embodiment of the present disclosure;

FIG. 7 is an exemplary in-vehicle Ethernet test chart one;

FIG. 8 is an in-vehicle Ethernet test example diagram II;

FIG. 9 is an in-vehicle Ethernet test example diagram III;

FIG. 10 is a schematic diagram according to a sixth embodiment of the present disclosure;

FIG. 11 is a schematic diagram according to a seventh embodiment of the present disclosure;

FIG. 12 is a schematic diagram according to an eighth embodiment of the present disclosure;

fig. 13 is a schematic block diagram of an example electronic device 1300 that can be used to implement embodiments of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

Fig. 1 is a schematic diagram of an application scenario to which an embodiment of the present disclosure is applicable. As shown in fig. 1, the vehicle may include a plurality of devices (fig. 1 illustrates a first device and a second device as examples) having an on-vehicle ethernet communication function and a wire harness (fig. 1 illustrates a wire harness connecting the first device and the second device as examples) for data transmission in the on-vehicle ethernet communication. Wherein a first device, e.g. an autopilot controller, and a second device, e.g. a sensor on a vehicle, such as an in-vehicle lidar. The first device may include a vehicle-mounted ethernet physical layer chip, a connector and other circuits, and the second device may also include a vehicle-mounted ethernet physical layer chip, a connector and other circuits, where one end of the wire harness is connected to the connector in the first device, and the other end of the wire harness is connected to the connector in the second device.

In order to improve safety and reliability of a vehicle, in the application scenario, a vehicle-mounted Ethernet physical layer can be tested on the first device and the second device to diagnose whether the vehicle-mounted Ethernet communication of the first device is normal or not and the vehicle-mounted Ethernet communication of the second device is normal or not, and a wire harness can be tested to test whether the data transmission function of the wire harness is normal or not.

In the related art, the test of the vehicle-mounted Ethernet physical layer and the vehicle-mounted Ethernet cable harness is finished by depending on a plurality of large-scale instruments, and the following defects exist: 1. the test cost is high, the portability is poor, and the method is suitable for laboratory tests, but cannot be used for on-site problem positioning and on-line fault diagnosis; 2. and one machine cannot be used for multiple purposes.

In order to solve the problems, the present disclosure provides a vehicle-mounted ethernet testing device, a method, a device and a storage medium, which can be applied to the fields of intelligent driving, unmanned driving and the like. The vehicle-mounted Ethernet testing device comprises a connecting component, a testing component and a control component, wherein the testing component comprises a vehicle-mounted Ethernet physical layer chip. Based on the structures, on one hand, the vehicle-mounted Ethernet testing device can test the vehicle-mounted Ethernet physical layer of the equipment with the vehicle-mounted Ethernet communication function, can test the wire harness for transmitting data in the vehicle-mounted Ethernet, and can be used for multiple purposes; on the other hand, the vehicle-mounted Ethernet testing device has simple structure, high portability and low hardware cost, can be used for off-line testing, and also can be used for on-site problem positioning and on-line fault diagnosis.

It should be noted that the vehicle-mounted ethernet testing device provided in the present disclosure may be applied to any device having a vehicle-mounted ethernet communication function, for example: an autopilot domain controller on an autopilot vehicle, a sensor (Lidar, radar, etc.) with an on-board ethernet interface, an on-board ethernet gateway, an on-board ethernet diagnostic instrument, etc.

It should be noted that the vehicle-mounted ethernet testing device provided in the present disclosure may be used alone as a portable vehicle-mounted ethernet diagnostic apparatus or may be embedded in a device having a vehicle-mounted ethernet communication function (e.g., an autopilot controller) to implement an automatic test and an online fault diagnosis.

The following describes the technical scheme of the present disclosure and how the technical scheme of the present disclosure solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present disclosure will be described below with reference to the accompanying drawings.

Fig. 2 is a schematic diagram according to a first embodiment of the present disclosure. As shown in fig. 2, the in-vehicle ethernet testing device 200 includes:

The connection component 210 is configured to connect to a device to be tested or a wire harness to be tested, where the device to be tested is a device with a vehicle-mounted ethernet communication function, and the wire harness to be tested is a wire harness for transmitting data in the vehicle-mounted ethernet.

The test component 220, which is connected to the connection component 210, includes an on-board ethernet physical layer chip 221.

And the control component 230 is connected with the test component 220, and is configured to control the vehicle-mounted ethernet physical layer chip 221 to perform physical layer test of the device under test in physical layer test of the device under test, and control the vehicle-mounted ethernet physical layer chip 221 to perform test of open circuit fault and/or short circuit fault of the wire harness under test in fault test of the wire harness under test.

The device with the vehicle-mounted ethernet communication function may be simply referred to as a vehicle-mounted ethernet device, and a wire harness for transmitting data in the vehicle-mounted ethernet may be simply referred to as a vehicle-mounted ethernet wire harness.

In this embodiment, one end of the connection component 210 is used for connecting a device under test or a wire harness under test, the other end is connected with one end of the test component 220, and the other end of the test component 220 is connected with the control component 230, so that the test component 220 tests the device under test or the wire harness under test under the control of the control component 230. The test component 220 includes a vehicle-mounted ethernet physical layer chip 221, one end of the vehicle-mounted ethernet physical layer chip 221 is connected to the connection component 210 (fig. 2, in which connection of the test component 220 to the connection component 210 indicates that the vehicle-mounted ethernet physical layer chip 221 is connected to the connection component 210), and the other end is connected to the control component 230 (fig. 2, in which connection of the test component 220 to the control component 230 indicates that the vehicle-mounted ethernet physical layer chip 221 is connected to the control component 230). The vehicle-mounted ethernet physical layer chip 221 has functions of testing a vehicle-mounted ethernet physical layer, testing a harness open circuit fault and testing a harness open circuit fault, so that the test component 220 can realize physical layer test of a device to be tested, open circuit fault test of a harness to be tested and short circuit fault test of the harness to be tested.

In this embodiment, during the testing process of the device under test, one end of the connection component 210 is connected to the device under test, the other end is connected to the vehicle-mounted ethernet physical layer chip 221 in the testing component 220, and the control component 230 controls the vehicle-mounted ethernet physical layer chip 221 to perform the physical layer test of the device under test. In the testing process of the wire harness to be tested, one end of the connecting component 210 is connected with the wire harness to be tested, the other end is connected with the vehicle-mounted ethernet physical layer chip 221 in the testing component 220, and the control component 230 controls the vehicle-mounted ethernet physical layer chip 221 to perform physical layer testing of the wire harness to be tested.

In the embodiment of the disclosure, in the vehicle-mounted ethernet testing device 200, the connection component 210, the testing component 220, the vehicle-mounted ethernet physical layer chip 221 in the testing component 220 and the control component 230 can realize the testing of the vehicle-mounted ethernet equipment and the vehicle-mounted ethernet harness, so that the vehicle-mounted ethernet testing device has the advantages of multiple purposes, simple structure and high portability, effectively reduces the hardware cost of the vehicle-mounted ethernet testing, and improves the testing efficiency.

Fig. 3 is a schematic diagram according to a second embodiment of the present disclosure. As shown in fig. 3, the test assembly 220 may further include a harness loss test circuit 222, the harness loss test circuit 222 being used for loss testing of the harness under test. Other structures in fig. 3 may refer to the embodiment shown in fig. 2, and will not be described again.

As shown in fig. 3, one end of the vehicle-mounted ethernet physical layer chip 221 is connected to the control component 230, and the other end is connected to the connection component 210; one end of the harness loss test circuit 222 is connected to the control module 230, and the other end is connected to the connection module 210. The vehicle-mounted ethernet physical layer chip 221 may be used for physical layer testing of a device under test and fault testing of a wire harness under test, and specifically, reference may be made to the foregoing embodiments, which are not repeated. The harness loss test circuit 222 can be used for testing the loss of the harness to be tested, and the test process is as follows:

in the loss test of the wire harness to be tested, one end of the connection component 210 may be connected to the wire harness to be tested, the other end of the connection component 210 is connected to the wire harness loss test circuit 222, and the control component 230 may control the wire harness loss test circuit 222 to perform the loss test of the wire harness to be tested. The control component 230 may control the harness loss test circuit 222 to generate an electrical signal during the loss test of the to-be-tested harness, and control the harness loss test circuit 222 to transmit the electrical signal to the to-be-tested harness, and then the to-be-tested harness is transmitted to the harness loss test circuit 222, so as to test the loss of the to-be-tested harness during the signal transmission.

According to the embodiment of the disclosure, the vehicle-mounted Ethernet testing device 200 can be used for testing equipment to be tested and a wire harness to be tested, so that one machine is multipurpose, wherein the test on the wire harness to be tested comprises the test on the short circuit and open circuit fault of the wire harness to be tested and the test on the wire harness loss of the wire harness to be tested, and the integrated test is realized.

Fig. 4 is a schematic diagram according to a third embodiment of the present disclosure. As shown in fig. 4, the connection assembly 210 may include a first connector 211 for connecting a device under test or a wire harness under test. Specifically, one end of the first connector 211 is used for connecting to a device under test or a wire harness under test, and the other end is connected to the vehicle-mounted ethernet physical layer chip 221. Other structures in fig. 4 may refer to the foregoing embodiments, and will not be described again.

In the physical layer test of the device under test, one end of the first connector 211 is connected to the device under test, the other end is connected to the vehicle-mounted ethernet physical layer chip 221, and the control component 230 controls the vehicle-mounted ethernet physical layer chip 221 to perform the physical layer test of the device under test, where the vehicle-mounted ethernet physical layer chip 221 may perform the physical layer test of the device under test through the self-contained physical layer test function.

In the fault test of the wire harness to be tested, one end of the first connector 211 is connected with the wire harness to be tested, the other end of the wire harness to be tested is suspended, the other end of the first connector 211 is connected with the vehicle-mounted Ethernet physical layer chip 221, the control component 230 controls the vehicle-mounted Ethernet physical layer chip 221 to perform the physical layer test of the wire harness to be tested, the vehicle-mounted Ethernet physical layer chip 221 can perform the short circuit test of the wire harness to be tested through the wire harness short circuit test function of the vehicle-mounted Ethernet physical layer chip, and the wire harness to be tested can perform the circuit break test of the wire harness to be tested through the wire harness circuit break test function of the vehicle-mounted Ethernet physical layer chip.

In one possible implementation manner, the on-board ethernet physical layer chip 221 has a function of locating a short circuit and open circuit fault of the wire harness through a time domain reflectometry (time domain reflectometry, abbreviated as TDR) technology, and the control component 230 can control the on-board ethernet physical layer chip 221 to locate the short circuit and open circuit fault of the wire harness to be tested by adopting the TDR technology, so as to obtain whether the short circuit and open circuit fault and the fault point position of the wire harness to be tested exist. Therefore, the accuracy of short-circuit open-circuit fault test on the electrical wiring harness is improved by using the TDR technology.

Optionally, as shown in fig. 4, the connection assembly 210 may further include a second connector 212 and a third connector 213, where the second connector 212 and the third connector 213 are used to connect different ends of the wire harness to be tested. The test assembly 220 also includes a harness loss test circuit 222. One end of the harness loss test circuit 222 is connected to the second connector 212 and the third connector 213, and the other end is connected to the control assembly 230.

In the loss test of the wire harness to be tested, the second connector 212 is connected to one end of the wire harness to be tested, the third connector 213 is connected to the other end of the wire harness to be tested, and the control component 230 controls the wire harness loss test circuit 222 to perform the wire harness loss test on the wire harness to be tested.

In the process that the control component 230 can control the harness loss test circuit 222 to perform loss test on the to-be-tested harness, the harness loss test circuit 222 can be controlled to generate an electric signal, the electric signal is transmitted to the to-be-tested harness through the second connector 212, and then the to-be-tested harness is transmitted to the harness loss test circuit 222 through the third connector 213, and loss of the to-be-tested harness in signal transmission is tested through the process.

In the embodiment of the present disclosure, by designing one or more connectors in the connection assembly 210, the physical layer test of the on-vehicle ethernet testing device 200 on the device under test and the test of the wire harness under test are implemented, and the test of the wire harness under test may further include the fault test of the wire harness under test and the loss test of the wire harness under test. Thus, the one-machine multi-purpose and integrated test of the vehicle-mounted Ethernet test device 200 is realized, the portability of the vehicle-mounted Ethernet test device 200 is improved, and the hardware cost of the vehicle-mounted Ethernet test is reduced.

In some embodiments, the first connector 211 and the third connector 213 in fig. 4 may be the same connector. Based on this, the embodiment shown in fig. 5 is provided:

fig. 5 is a schematic diagram according to a fourth embodiment of the present disclosure. As shown in fig. 5, the connection assembly 210 includes a first connector 211 and a second connector 212, and the test assembly 220 includes an in-vehicle ethernet physical layer chip 221, a harness loss test circuit 222, and a switching circuit 223. The switch circuit 223 has a first end connected to the vehicle-mounted ethernet physical layer chip 221, a second end connected to the harness loss test circuit 222, and a third end connected to the first connector 211. Therefore, the switching circuit 223 may turn on the in-vehicle ethernet physical layer chip 221 and the first connector 211 so that the in-vehicle ethernet physical layer chip 221 performs a physical layer test on a device under test connected to the first connector and performs a fault test on a wire harness under test connected to the first connector, or the switching circuit 223 may turn on the wire harness loss test circuit 222 and the first connector 211 so that the wire harness loss test circuit 222 performs a wire harness loss test on the wire harness under test connected to the first connector 211.

In the fault test of the wire harness to be tested, the first connector 211 is connected with one end of the wire harness to be tested, the other end of the wire harness to be tested is suspended, the control component 230 controls the switch circuit 223 to establish connection between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, and controls the vehicle-mounted ethernet physical layer chip 221 to test the open circuit fault and/or the short circuit fault of the wire harness to be tested. The control switch circuit 223 establishes connection between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, that is, the control switch circuit 223 conducts the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, and the vehicle-mounted ethernet physical layer chip 221 performs signal transmission with a wire harness to be tested connected with the first connector 211, so as to implement fault test.

In the loss test of the wire harness to be tested, the first connector 211 is connected with one end of the wire harness to be tested, the second connector 212 is connected with the other end of the wire harness to be tested, the control component 230 controls the switch circuit 223 to establish connection between the first connector 211 and the wire harness loss test circuit 222, and controls the wire harness loss test circuit 222 to perform the wire harness loss test on the wire harness to be tested. The control switch circuit 223 establishes connection between the first connector 211 and the wire harness loss test circuit 222, that is, the control switch circuit 223 conducts the first connector 211 and the wire harness loss test circuit 222, and signal transmission can be performed between the wire harness loss test circuit 222 and the wire harness to be tested connected with the first connector 211, so as to realize the wire harness loss test.

In the physical layer test of the device under test, the first connector 211 is connected to the device under test, and the control component 230 controls the switch circuit 223 to establish connection between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, and controls the vehicle-mounted ethernet physical layer chip 221 to perform the physical layer test of the device under test. The switch circuit 223 establishes connection between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, and then, signal transmission can be performed between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, so as to implement physical layer test of the device to be tested connected to the first connector 211.

In the embodiment of the disclosure, the first connector 211 is connected to a device to be tested, the switch circuit 223 establishes connection between the first connector 211 and the vehicle-mounted ethernet physical layer chip 221, and the control component 230 controls the vehicle-mounted ethernet physical layer chip 221 to perform a physical layer test of the device to be tested; the first connector 211 is connected with one end of the wire harness to be tested, the other end of the wire harness to be tested is suspended, the switch circuit 223 establishes connection between the first connector 211 and the vehicle-mounted Ethernet physical layer chip 221, and the control component 230 controls the vehicle-mounted Ethernet physical layer chip 221 to perform short circuit breaking fault test of the wire harness to be tested; the first connector 211 is connected with one end of the wire harness to be tested, the second connector 212 is connected with the other end of the wire harness to be tested, the switch circuit 223 establishes connection between the first connector 211 and the wire harness loss test circuit 222, and the control component 230 controls the wire harness loss test circuit 222 to conduct loss test of the wire harness to be tested. Thus, the one-machine multi-purpose and integrated test of the vehicle-mounted Ethernet test device 200 is realized, the whole structure is simple, and the test process is simple to operate.

Alternatively, the switching circuit 223 may include a switch, which may be a single pole double throw switch, such as various types of relays, and a chip that is an analog switch.

Alternatively, the switching circuit 223 may include a transistor through which the switching function is implemented.

Optionally, the harness loss test circuit 222 may include a signal generation circuit, a signal transceiver circuit, a signal amplification circuit, and an analog-to-digital conversion circuit. The signal generating circuit is connected with the control component 230 and the signal receiving and transmitting circuit, the signal receiving and transmitting circuit is connected with the signal amplifying circuit and the second connector 212, the signal amplifying circuit is connected with the analog-to-digital converter, and the analog-to-digital converter is connected with the control component 230.

In the case where the connection assembly 210 includes the first connector 211, the second connector 212, and the third connector 213, the signal transceiving circuit is also connected to the third connector 213. In the loss test of the wire harness to be tested, the electrical signal generated by the signal generating circuit passes through the signal transceiving circuit, the third connector 213, the wire harness to be tested, the second connector 212, the signal amplifying circuit and the analog-to-digital conversion circuit to reach the control assembly 230, and the wire harness loss is tested through the signal transmission process.

In the case where the connection assembly 210 includes the first connector 211 and the second connector 212, the signal transceiving circuit is further connected to the switching circuit 223, and in the loss test of the wire harness to be tested, the electric signal generated by the signal generating circuit passes through the signal transceiving circuit, the switching circuit 223, the first connector 211, the wire harness to be tested, the second connector 212, the signal amplifying circuit and the analog-to-digital conversion circuit to reach the control assembly 230, and the wire harness loss is tested through the signal transmission process.

Based on the switch circuit 223 including a switch, the harness loss test circuit 222 includes a signal generation circuit, a signal transceiver circuit, a signal amplification circuit, and an analog-to-digital conversion circuit, the embodiment shown in fig. 6 is provided:

fig. 6 is a schematic diagram according to a fifth embodiment of the present disclosure. As shown in fig. 6, the in-vehicle ethernet testing device 200 may include: the first connector 211, the second connector 212, the in-vehicle ethernet physical layer chip 221, the switch 2231, the signal generating circuit 2221, the signal transmitting and receiving circuit 2222, the signal amplifying circuit 2223, the analog-to-digital conversion circuit 2224, and the control component 230.

The signal generating circuit 2221 is connected to the control unit 230 and the signal transmitting/receiving circuit 2222, and the signal transmitting/receiving circuit 2222 is connected to the signal amplifying circuit 2223, the second connector 212 and the switch 2231. The signal amplifying circuit 2223 is connected to the analog-to-digital conversion circuit 2224, and the analog-to-digital conversion circuit 2224 is connected to the control component 230. The signal generating circuit 2221 is configured to generate an electrical signal, and transmit the electrical signal to the signal transmitting/receiving circuit 2222; the signal transceiver circuit 2222 is configured to receive, process (e.g., modulate, mix, couple signals, separate incident and transmitted waves, etc.) and forward electrical signals; the signal amplifying circuit 2223 is configured to amplify the received electrical signal; the analog-to-digital conversion circuit 2224 is configured to convert the received electrical signal from an analog signal to a digital signal, and then transmit the digital signal to the control component 230.

In this embodiment, in the loss test of the wire harness to be tested, the control component 230 controls the signal generating circuit 2221 to generate an electrical signal, and the electrical signal sequentially passes through the signal transceiver circuit 2222, the switch 2231, the first connector 211, the wire harness to be tested, the second connector 212, the signal transceiver circuit 2222, the signal amplifier circuit 2223, and the analog-to-digital conversion circuit 2224 to reach the control component 230. Therefore, the wire harness loss test of the wire harness to be tested is completed through the signal transmission process.

Alternatively, the signal transceiver circuit 2222 may be a radio frequency transceiver circuit. The radio frequency transceiver circuit can be used for generating, transmitting, receiving and processing radio frequency signals, modulating, mixing and the like of the radio frequency signals, directionally coupling the signals, separating incident waves and reflected waves, and more accurately processing the electric signals through the radio frequency transceiver circuit, so that the accuracy of loss test of the wire harness to be tested is improved. At the position of

Alternatively, the signal amplifying circuit 2223 may be a voltage-controlled amplifying circuit. The voltage-controlled amplifying circuit can adjust the amplification factor of the electric signal through voltage so as to accurately control the amplification factor of the signal.

Optionally, the loss test of the wire harness to be tested may include a test of insertion loss and/or return loss of the wire harness to be tested. The insertion loss of the wire harness to be tested refers to attenuation of signals caused by inserting the wire harness to be tested into a signal link, and the return loss of the wire harness to be tested refers to signal attenuation caused by signal reflection due to discontinuous impedance or unmatched impedance of the wire harness to be tested. Thus, the integrated test of the wire harness loss of the wire harness to be tested is realized, and the functional diversity of the vehicle-mounted Ethernet test device 200 is improved.

In this alternative, the harness loss test circuit 222 corresponds to a vector network analyzer (Vector Network Analyzers, abbreviated as VNA), and in the case where the signal transceiver circuit 2222 is a radio frequency transceiver circuit, the harness loss test circuit 222 corresponds to a radio frequency VNA. The insertion loss of the wire harness and the return loss of the wire harness can be tested through the VNA function.

Optionally, the physical layer test of the device under test may include at least one of: physical layer connection state test of equipment to be tested, signal quality evaluation test of equipment to be tested, and data link bandwidth test of equipment to be tested. The physical layer connection state test and the signal quality evaluation test can be implemented by the on-board ethernet physical layer chip 221, and the data link bandwidth test can be implemented by a network performance test tool, for example, the network performance test tool is pre-installed in the control component 230. Therefore, the physical layer integrated test of the device to be tested is realized, and the functional diversity of the vehicle-mounted Ethernet test device 200 is improved.

Optionally, as shown in fig. 6, the on-board ethernet testing device 200 may further include at least one of the following: input/output component 240, storage component 250, power supply component 260. The input/output component 240 may be a separate input component and/or a separate output component, or may be an integrated input/output component. The input component is used for receiving input information of a user, such as an instruction for testing equipment to be tested and an instruction for testing a test wire bundle, which are input by the user, and is a touch device; the output component is used for outputting a test result of the equipment to be tested and/or the wire harness to be tested, and the output component is a display device for example. The test result of the device to be tested is a physical layer test result of the device to be tested, and the test result of the wire harness to be tested comprises a fault test result and/or a loss test result of the device to be tested. The storage assembly 250 is used for storing test results of the device under test and/or the wire harness under test. The power supply assembly 260 is used to provide power to the in-vehicle ethernet testing device 200.

As an example, the input/output unit 240, the storage unit 250, and the power unit 260 may be connected to the control unit 230 (the connection is not shown in the figure), the on-board ethernet physical layer chip 221 (the connection is not shown in the figure), and the power unit 260 may be connected to at least one of the signal generating circuit 2221, the signal transmitting/receiving circuit 2222, the signal amplifying circuit 2223, and the analog-to-digital conversion circuit 2224 (the connection is not shown in the figure).

Further alternatively, the power supply assembly 260 may include a battery (not shown) and a charge and discharge management module (not shown).

Based on any of the foregoing embodiments, optionally, the control component 230 may include a controller (not shown in the drawings), which may be a field programmable gate array (Field Programmable Gate Array, abbreviated as FPGA), an advanced reduced instruction set machine (Advanced RISC Machine, abbreviated as ARM), a micro control unit (Microcontroller Unit, abbreviated as MCU), and other controllers, and may be used to control an operation mode of the on-board ethernet physical layer chip 221, to communicate with the on-board ethernet physical layer chip 221 to complete a physical layer test of a device to be tested, and to complete a fault test of a wire harness to be tested, to control the switch circuit 223, to control the signal generating circuit 2221 to generate a signal, to control the analog-to-digital conversion circuit 2224 to complete an analog-to-digital conversion, to control an amplification factor of the signal amplifying circuit 2223, to control the input/output component 240 to output data, receive a touch signal, and the like.

Based on any of the foregoing embodiments, optionally, the communication interface between the in-vehicle ethernet physical layer chip 221 and the control component 230 may be at least one of: serial gigabit media independent interface (Serial Gigabit Media Independent Interface, SGMII for short), simplified gigabit media independent interface (Reduced Gigabit Media Independent Interface, RGMII for short), gigabit media independent interface (Gigabit Media Independent Interface, GMII for short), etc., which support data transmission at thousand/hundred/ten megaspeeds, and can meet test requirements.

Based on any of the foregoing embodiments, optionally, the control interface between the on-board ethernet physical layer chip 221 and the control component 230 may be a serial management interface (Serial Management Interface, abbreviated as SMI). The SMI may include a management data clock (Management Data Clock, MDC) interface and/or a management data input Output (Management Data Input/Output, MDIO) interface, among others. Controller 110 reads 111 the connection status register via the SMI interface

Fig. 7 is an illustration of an in-vehicle ethernet test example. As shown in fig. 7, taking the first device or the second device shown in fig. 1 as a device to be tested as an example, a dashed line indicates a transmission route of a data stream when the first device or the second device is subjected to physical layer test by the in-vehicle ethernet test apparatus. The control component 230 may send a corresponding device test instruction to the on-vehicle ethernet physical layer chip 221, and control the switch 2231 to establish connection between the on-vehicle ethernet physical layer chip 221 and the first connector 211, and in response to the instruction, the on-vehicle ethernet physical layer chip 221 may send a corresponding test signal to the first device/second device through the switch 2231 and the first connector 211 to perform a physical layer test, and the first device/second device may perform information feedback to the on-vehicle ethernet physical layer chip 221 through the first connector 211 and the switch 2231.

Fig. 8 is an in-vehicle ethernet test example diagram two. As shown in fig. 8, the broken line represents a transmission route of the data stream when the harness to be tested is subjected to fault test by the on-board ethernet test device. The control component 230 may send a corresponding wire harness fault test instruction to the vehicle-mounted ethernet physical layer chip 221, and control the switch 2231 to establish connection between the vehicle-mounted ethernet physical layer chip 221 and the first connector 211, and the vehicle-mounted ethernet physical layer chip 221 may send, in response to the instruction, a corresponding test signal to the wire harness to be tested through the switch 2231 and the first connector 211, so as to perform a fault test, and the wire harness to be tested may perform information feedback to the vehicle-mounted ethernet physical layer chip 221 through the first connector 211 and the switch 2231.

Fig. 9 is an in-vehicle ethernet test example diagram three. As shown in fig. 9, the broken line represents the transmission route of the data stream when the harness loss test is performed on the harness to be tested by the in-vehicle ethernet test device. The data transmission process of the wire harness loss test is described in the foregoing embodiments, and is not repeated.

The respective structures in fig. 7 to 9 can refer to the foregoing embodiments, and will not be described in detail.

Next, based on the on-vehicle ethernet testing device provided in the foregoing embodiment, according to fig. 10 to fig. 12, a method embodiment of on-vehicle ethernet testing is provided.

Fig. 10 is a schematic diagram according to a sixth embodiment of the present disclosure. As shown in fig. 10, the on-vehicle ethernet testing method may include the steps of:

s1001, determining a test mode.

Wherein S1001 is an optional step.

The test mode may be a device test or a harness test, among others.

Before testing, a test mode needs to be configured in advance, and initialization work is performed, wherein the initialization work includes initializing each circuit module in the vehicle-mounted Ethernet equipment testing device, such as error state resetting, configuring the working mode and the working frequency of the vehicle-mounted Ethernet physical layer chip, setting the sampling frequency of an analog-to-digital conversion circuit, and the like.

In this embodiment, the test mode may be determined by a controller in the in-vehicle ethernet test device.

S1002, whether the test mode is a device test.

Wherein S1002 is an optional step.

In the present embodiment, if the test mode is the device test, S1003 may be executed; if the test pattern is a harness test, 1004 may be performed.

Optionally, the vehicle-mounted ethernet testing device may further determine whether to test the device to be tested or test the wire harness to be tested currently according to a test instruction input by a user. If the test instruction input by the user indicates to test the device to be tested, S1003 is executed; if the test instruction input by the user indicates to test the wire harness to be tested, S1004 is executed.

S1003, controlling a vehicle-mounted Ethernet physical layer chip in the test assembly to perform physical layer test on the equipment to be tested connected with the connection assembly, and obtaining a test result of the equipment to be tested.

The device to be tested is a device with a vehicle-mounted Ethernet communication function.

In the device test, the connecting component is connected with the device to be tested.

In this embodiment, in the vehicle-mounted ethernet testing apparatus, the control component may send a device testing instruction to the vehicle-mounted ethernet physical layer chip through the control interface, and the vehicle-mounted ethernet physical layer chip responds to the device testing instruction to perform physical layer testing on the device to be tested connected to the connection component, so as to obtain a test result of the device to be tested, and cache the test result into the register; and then, the control component can read the test result of the device to be tested from a register in the vehicle-mounted Ethernet physical layer chip.

S1004, controlling the vehicle-mounted Ethernet physical layer chip to test short-circuit faults and/or open-circuit faults of the wire harness to be tested connected with the connecting assembly, and obtaining a fault test result of the wire harness to be tested.

The wire harness to be tested is a wire harness for transmitting data in the vehicle-mounted Ethernet.

In the wire harness test, the connecting assembly is connected with the wire harness to be tested.

In this embodiment, in the vehicle-mounted ethernet testing device, the control component may send a wire harness fault testing instruction to the vehicle-mounted ethernet physical layer chip through the control interface, and the vehicle-mounted ethernet physical layer chip responds to the wire harness fault testing instruction to perform a short-circuit fault and/or an open-circuit fault test on the wire harness to be tested connected to the connection component, so as to obtain a fault testing result of the device to be tested, and cache the fault testing result in the register; and then, the control component can read and obtain a fault test result of the wire harness to be tested from a register in the vehicle-mounted Ethernet physical layer chip.

In the embodiment of the disclosure, the physical layer test can be performed on the equipment to be tested according to the test mode, or the fault test can be performed on the test line bundle, so that one machine of the vehicle-mounted Ethernet test device is multipurpose, the hardware cost of the vehicle-mounted Ethernet test is reduced, and the test efficiency is improved.

For clarity of description and ease of understanding, the testing of the device under test and the testing of the wire harness under test are described separately in the following by separate embodiments.

Fig. 11 is a schematic diagram according to a seventh embodiment of the present disclosure. As shown in fig. 11, the test process of the device under test in the vehicle-mounted ethernet test method may include the following steps:

S1101, the control switch circuit establishes connection between the first connector and the vehicle-mounted Ethernet physical layer chip, wherein the first connector is connected with the device to be tested.

Wherein S1101 is an optional step.

In this embodiment, based on the vehicle-mounted ethernet testing apparatus shown in fig. 4 to 5, before the physical layer test is performed on the device to be tested (in this embodiment, before the test of the physical layer connection state is performed on the device to be tested), the switch circuit may be controlled to establish connection between the first connector and the vehicle-mounted ethernet physical layer chip, so that the vehicle-mounted ethernet physical layer chip may establish communication connection with the device to be tested, and further may perform the physical layer test on the device to be tested. For example, a control component in the vehicle-mounted ethernet testing device may send a corresponding control instruction to the switch circuit, so as to control the switch circuit to establish a connection between the first connector and the vehicle-mounted ethernet physical layer chip.

S1102, testing the physical layer connection state of the device to be tested through the vehicle-mounted Ethernet physical layer chip to obtain the physical layer connection state of the device to be tested.

In this embodiment, the control component may test, through the vehicle-mounted ethernet physical layer chip, the physical layer connection state of the device to be tested connected by the connection component under the condition that the test mode is device test, and read the physical layer connection state of the device to be tested from a connection state register included in the vehicle-mounted ethernet physical layer chip. Wherein the control component may read the physical layer connection state from a connection state register (e.g., SMI) through a control interface, the connection state register being a register for storing an indicator indicating the physical layer connection state, for example, link up, which is one of important indicators of whether the physical layer connection state is normal.

S1103, it is determined whether the physical layer connection state is normal.

Wherein, S1103-S1111 are optional steps. In other words, the physical layer test of the device to be tested may only include the test of the physical layer connection state of the device to be tested, or after the physical layer connection state is tested, whether the physical layer connection state is normal or not may be further judged, and the test of the signal quality and/or the data link bandwidth of the device to be tested may be further performed.

In this embodiment, the physical layer connection state of the device under test may be normal or abnormal. The physical layer connection state of the equipment to be tested is normal, which indicates that the equipment to be tested and the vehicle-mounted Ethernet physical layer chip are successfully connected on the physical layer; the abnormal connection state of the physical layer of the equipment to be tested indicates that the equipment to be tested and the vehicle-mounted Ethernet physical layer chip are failed to be connected on the physical layer, and further indicates that the equipment to be tested has faults on the physical layer connection. S1104 may be performed if the physical layer connection state is normal, otherwise S1109 may be performed.

S1104, evaluating the signal quality of the equipment to be tested through the vehicle-mounted Ethernet physical layer chip to obtain a signal quality evaluation value.

The signal quality evaluation (also referred to as signal quality test) is also a function of the vehicle-mounted ethernet physical layer chip, and the test process needs to be performed on the basis that the vehicle-mounted ethernet physical layer chip and the device to be tested are in a connection state.

The signal quality evaluation value is a signal quality index (signal quality index, simply SQI), and therefore, the signal quality evaluation value may also be referred to as an SQI value, and the larger the SQI value, the better the signal quality.

In this embodiment, under the condition that the physical layer connection state of the device to be tested is normal, the control component may evaluate the signal quality of the device to be tested through the vehicle-mounted ethernet physical layer chip based on the connection of the device to be tested and the vehicle-mounted ethernet physical layer chip on the physical layer, to obtain a signal quality evaluation value, and read from a related register in the vehicle-mounted ethernet physical layer chip to obtain the signal quality evaluation value. The control component can start the evaluation of the signal quality of the device to be tested by the vehicle-mounted Ethernet physical layer chip in a mode of configuring the related registers in the vehicle-mounted Ethernet physical layer chip, and the configured registers and the registers for storing the signal quality evaluation values can be different registers.

S1105, it is determined whether the signal quality evaluation value is greater than or equal to a signal quality threshold.

The signal quality threshold is a pre-configured threshold, and can be configured by a professional according to experience.

In this embodiment, if the signal quality evaluation value is greater than or equal to the signal quality threshold, it indicates that the signal quality meets the standard, S1106 may be executed, otherwise S1110 is executed.

And S1106, testing the data link bandwidth of the equipment to be tested to obtain a bandwidth test value of the equipment to be tested.

In this embodiment, if the signal quality evaluation value is greater than or equal to the signal quality threshold, that is, if the signal quality meets the standard, the bandwidth of the data link of the device to be tested may be tested by the network performance testing tool, for example, the bandwidth of the data link of the device to be tested may be tested by the iperf (iperf is a streaming tool), and finally bandwidth test data may be obtained. The iperf may be used to test parameters such as a limiting bandwidth value, bandwidth stability, and packet loss rate in a user datagram protocol (user datagram protocol, abbreviated as UDP) mode of the device to be tested. The bandwidth test value may be a limit bandwidth value.

S1107, judging whether the bandwidth test value is larger than or equal to the bandwidth threshold value.

Wherein the bandwidth threshold is a pre-configured threshold that can be empirically configured by a practitioner.

In this embodiment, if the bandwidth test value is greater than or equal to the bandwidth threshold, it indicates that the data link bandwidth of the device under test meets the standard, S1108 may be executed, otherwise S1111 may be executed.

S1108, outputting prompt information of normal physical layer test.

In this embodiment, since the physical layer connection state, the signal quality and the data link bandwidth are tested in sequence, if the bandwidth test value is greater than or equal to the bandwidth threshold, it is indicated that the physical layer connection state of the device to be tested is normal, the signal quality reaches the standard, and the data link bandwidth reaches the standard, and a prompt message indicating that the physical layer test is normal can be output to tell the tester that the physical layer test of the device to be tested is normal. Then, the test of the device under test may be ended.

The method can output the normal prompt message of the physical layer test through voice, and can display the normal prompt message of the physical layer test on a display screen.

Optionally, the signal quality evaluation value and the bandwidth test value can also be output, so that a specific test value is provided for a tester under the condition that the tester is informed of the normal physical layer test of the device to be tested, and the tester can record or further judge according to own experience.

S1109, outputting prompt information of physical layer connection failure, and ending the test of the device to be tested.

In this embodiment, if the physical layer connection state of the device to be tested is abnormal, a prompt message of the physical layer connection failure may be output, and in case of the physical layer connection failure, the signal quality test and the data link bandwidth test are not required, so that the test of the device to be tested may be directly ended.

The method can output the prompt information of the physical layer connection failure through voice, and can display the prompt information of the physical layer connection failure on a display screen.

S1110, outputting prompt information of abnormal signal quality, and ending the test of the device to be tested.

In this embodiment, if the signal quality evaluation value is smaller than the signal quality threshold, that is, if the signal quality of the device to be tested does not reach the standard, a prompt message of abnormal signal quality may be output to inform the tester of abnormal signal quality of the device to be tested, so that the tester can adjust and maintain the device. After the prompt information of abnormal signal quality is output, the test of the device to be tested can be ended without the test of the data link bandwidth.

The prompt information of abnormal signal quality can be output through voice, and the prompt information of abnormal signal quality can be displayed on a display screen.

Alternatively, the signal quality evaluation value may also be output. Thus, in the case of abnormal signal quality, the test value of the signal quality is provided to the tester for the tester to record or make further judgment according to own experience.

S1111, outputting prompt information of abnormal data link bandwidth.

In this embodiment, if the bandwidth test value is smaller than the bandwidth threshold, that is, if the data link bandwidth of the device to be tested does not reach the standard, a prompt message of the abnormal data link bandwidth may be output to inform the tester of the abnormal data link bandwidth of the device to be tested, so that the tester can adjust and maintain the device. After the prompt information of abnormal data link bandwidth is output, the test of the device to be tested can be ended.

Alternatively, the bandwidth test value may also be output. Therefore, in the case of abnormal data link bandwidth, the test value of the data link bandwidth is provided for the tester so that the tester can record or make further judgment according to own experience.

In the embodiment of the disclosure, the physical layer test of the equipment to be tested is realized through the vehicle-mounted Ethernet test device, wherein the test comprises the measurement of the physical layer connection state, the signal quality and the data link bandwidth of the equipment to be tested, so that the vehicle-mounted Ethernet test device has multiple test functions, realizes integrated test, reduces the hardware cost of the vehicle-mounted Ethernet test, and improves the convenience of the vehicle-mounted Ethernet test.

By way of example, in the embodiment shown in fig. 11, after testing the device under test, the following faults of the device under test may be located quickly: level 0, physical layer connection failure; level 1, signal quality anomalies; level 2: bandwidth testing is abnormal. Wherein, the level 0-2 represents the fault level, and the fault severity of the level 0 is the highest.

Fig. 12 is a schematic diagram according to an eighth embodiment of the present disclosure. As shown in fig. 12, the test process of the wire harness to be tested in the vehicle-mounted ethernet test method may include the following steps:

s1201, the control switch circuit establishes connection between the first connector and the vehicle-mounted Ethernet physical layer chip, the first connector is connected with one end of the wire harness to be tested, and the other end of the wire harness to be tested is suspended.

Wherein S1201 is an optional step.

In this embodiment, based on the vehicle-mounted ethernet testing device shown in fig. 4 to 5, when the test mode is the harness test, before the test is performed on the to-be-tested harness, the switch circuit may be controlled to establish connection between the first connector and the vehicle-mounted ethernet physical layer chip, so that the vehicle-mounted ethernet physical layer chip may establish communication connection with the to-be-tested harness, and further may perform short-circuit fault and/or open-circuit fault test on the to-be-tested harness. The control component in the vehicle-mounted Ethernet testing device can send a corresponding control instruction to the switch circuit so as to control the switch circuit to establish connection between the first connector and the vehicle-mounted Ethernet physical layer chip.

S1202, controlling the vehicle-mounted Ethernet physical layer chip to test short-circuit faults and/or open-circuit faults of the wire harness to be tested connected with the connecting assembly, and obtaining a fault test result of the wire harness to be tested.

Herein, S1202 may refer to the description of the foregoing embodiments, and will not be repeated.

In one possible implementation manner, the vehicle-mounted ethernet physical layer chip has a function of locating a wire harness short-circuit and open-circuit fault through a TDR technology, and the control component can control the vehicle-mounted ethernet physical layer chip to locate the open-circuit and short-circuit fault of the wire harness to be tested by adopting the TDR technology, so as to obtain whether the wire harness to be tested has the short-circuit and open-circuit fault and the fault point position (for example, the distance between the fault point and the vehicle-mounted ethernet physical layer chip can be located). Therefore, the accuracy of short-circuit open-circuit fault test on the electrical wiring harness is improved by using the TDR technology.

And S1203, determining whether the wire harness to be tested is short-circuited or broken according to the fault test result.

Wherein, S1203-S1209 are optional steps.

In this embodiment, the fault test result is used to indicate whether the wire harness to be tested is shorted or opened, so that whether the wire harness to be tested is shorted or opened can be determined according to the fault test result. If the wire harness under test is not shorted or not open, S1204 may be performed, otherwise S1209 may be performed.

S1204, controlling a switch circuit to establish connection between a first connector in the connection assembly and a wire harness loss test circuit, wherein one end of the wire harness to be tested is connected with the first connector, and the other end of the wire harness to be tested is connected with a second connector in the connection assembly.

In this embodiment, based on the vehicle-mounted ethernet testing device shown in fig. 5, before the harness loss test is performed on the to-be-tested wire harness, the switch circuit may be controlled to establish connection between the first connector and the harness loss testing circuit, so that the harness loss testing circuit may establish communication connection with the to-be-tested wire harness, and further may perform the harness loss test on the to-be-tested wire harness.

Alternatively, based on the in-vehicle ethernet testing apparatus shown in fig. 4, one end of the wire harness to be tested is connected to the third connector, and the other end is connected to the second connector, and S1204 may not be executed.

S1205, testing the insertion loss and/or return loss of the wire harness to be tested through the wire harness loss testing circuit to obtain an insertion loss testing value and a return loss testing value.

The harness loss test process may refer to the foregoing embodiment.

Taking the example that the harness loss test circuit comprises a signal generating circuit, a signal receiving and transmitting circuit, a signal amplifying circuit and an analog-to-digital conversion circuit, and the harness loss test is performed in a VNA mode, the harness loss test process can comprise: firstly, a switching circuit is used for enabling a first connector to be communicated with a wire harness loss circuit, and a VNA test in the wire harness test is started, wherein the operation is shown as S1204; then, the control component controls the signal generating circuit to generate a first signal and send the first signal to the signal receiving and transmitting circuit; the signal receiving and transmitting circuit sends a first signal to the wire harness to be detected through the first connector, and separates a transmitting signal (for convenience of distinguishing, the transmitting signal is called a second signal) of the signal receiving and transmitting circuit from a reflecting signal (for convenience of distinguishing, the reflecting signal is called a third signal) of the wire harness to be detected reflected back at the first connector; then, a second signal is sent to the wire harness to be tested, and the second signal returns to the signal receiving and transmitting circuit through the second connector after passing through the wire harness to be tested to become a fourth signal; the signal receiving and transmitting circuit transmits the second signal, the third signal and the fourth signal to the signal amplifying circuit in a time sharing way; then, the signal amplifying circuit amplifies the second signal, the third signal and the fourth signal, and the analog-to-digital conversion circuit performs analog-to-digital conversion on the amplified second signal, third signal and fourth signal to obtain a fifth signal, a sixth signal and a seventh signal (the fifth signal, the sixth signal and the seventh signal are digital voltage signals) which can be identified by the control component; finally, the control component can calculate an insertion loss test value of the wire harness to be tested through the fifth signal and the seventh signal, and can obtain a return loss test value of the wire harness to be tested through the fifth signal and the sixth signal.

S1206, it is determined whether the insertion loss test value is less than the insertion loss threshold and the return loss test value is less than the return loss threshold.

The insertion loss threshold and the return loss threshold are preconfigured thresholds, and can be preconfigured by a professional according to experience.

In this embodiment, it is determined whether the insertion loss test value is less than the insertion loss threshold and the return loss test value is less than the return loss threshold, and if the insertion loss test value is less than the insertion loss value and the return loss test value is less than the return loss threshold, then S1207 is executed, otherwise S1208 is executed.

S1207, outputting prompt information of normal wire harness.

In this embodiment, if the insertion loss test value is smaller than the insertion loss value and the return loss test value is smaller than the return loss threshold, a prompt message of the normal wire harness is output, so that the tester is informed that the wire harness to be tested is not shorted, is not broken and the wire harness loss is normal through the prompt message.

Alternatively, the insertion loss test value and the return loss test value may also be output. Therefore, specific test values are provided for the testers under the condition that the wire harness is normal, so that the testers can record or further judge according to own experience.

S1208, outputting prompt information of the harness loss fault.

In this embodiment, if the insertion loss test value is greater than or equal to the insertion loss value, or if the return loss test value is greater than or equal to the return loss threshold, it indicates that the loss of the wire harness to be tested is too large, and prompt information of the wire harness loss fault can be output, so that the tester is informed of abnormal wire harness loss of the wire harness to be tested through the prompt information, and the tester is convenient to repair and replace the wire harness.

Alternatively, the insertion loss test value and the return loss test value may also be output. Therefore, specific test values are provided for the testers under the condition of abnormal beam loss, so that the testers can record or further judge according to own experience.

S1209, outputting fault prompt information of the short circuit or the open circuit of the wire harness, and ending the test of the wire harness to be tested.

In this embodiment, if the fault test result indicates that the wire harness to be tested is shorted, a prompt message of the wire harness shorted is output, and the test of the wire harness to be tested is finished; if the fault test result indicates that the wire harness to be tested is broken, the prompting information of the wire harness broken circuit can be output, and the test of the wire harness to be tested is finished.

In the embodiment of the disclosure, the test of the wire harness to be tested is realized through the vehicle-mounted Ethernet test device, wherein the test comprises the test of the short circuit breaking fault of the wire harness to be tested, and the test of the wire harness loss of the wire harness to be tested is also included, so that the vehicle-mounted Ethernet test device has multiple test functions for the wire harness, the integrated test is realized, the hardware cost of the vehicle-mounted Ethernet test is reduced, and the test convenience is improved.

By way of example, in the embodiment shown in FIG. 12, after testing the test harness, the following faults of the test harness can be quickly located: level 0, short circuit or open circuit fault; level 1, harness damage failure. The level 0-1 represents a fault level, the fault severity of the level 0 is highest, and the fault level of the wire harness is level 1 under the condition that the insertion loss and/or the return loss of the wire harness are high.

According to an embodiment of the present disclosure, the present disclosure further provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the aspects provided in any one of the embodiments described above.

According to an embodiment of the present disclosure, there is also provided a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the solution provided by any one of the above embodiments.

According to an embodiment of the present disclosure, the present disclosure also provides a computer program product comprising: a computer program stored in a readable storage medium, from which at least one processor of an electronic device can read, the at least one processor executing the computer program causing the electronic device to perform the solution provided by any one of the embodiments described above.

According to an embodiment of the present disclosure, the present disclosure further provides a vehicle-mounted device, where the vehicle-mounted device includes the vehicle-mounted ethernet testing apparatus provided according to any one of the above embodiments.

According to an embodiment of the present disclosure, the present disclosure further provides a vehicle including the vehicle-mounted device provided according to the above embodiment.

Fig. 13 is a schematic block diagram of an example electronic device 1300 that can be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the disclosure described and/or claimed herein.

As shown in fig. 13, the electronic device 1300 includes a computing unit 1301 that can perform various appropriate actions and processes according to a computer program stored in a Read Only Memory (ROM) (fig. 13 is exemplified by ROM 1302) or a computer program loaded from a storage component 1308 into a random access Memory (Random Access Memory, RAM) (fig. 13 is exemplified by RAM 1303). In the RAM 1303, various programs and data required for the operation of the electronic device 1300 can also be stored. The computing unit 1301, the ROM 1302, and the RAM 1303 are connected to each other through a bus 1304. An input/output (I/O) interface (I/O interface 1305, FIG. 13 is also connected to bus 1304.

Various components in electronic device 1300 are connected to I/O interface 1305, including: an input unit 1306 such as a keyboard, a mouse, or the like; an output component 1307, such as various types of displays, speakers, etc.; storage component 1308, such as a magnetic disk, optical disk, etc.; and a communication unit 1309 such as a network card, a modem, a wireless communication transceiver, or the like. The communication unit 1309 allows the electronic device 1300 to exchange information/data with other devices through a computer network such as the internet and/or various telecommunication networks.

The computing unit 1301 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of computing unit 1301 include, but are not limited to, a central processing unit (Central Processing Unit, CPU), a graphics processing unit (Graphic Processing Unit, GPU), various dedicated artificial intelligence (Artificial Intelligence, AI) computing chips, various computing units running machine learning model algorithms, digital signal processors (Digital Signal Process, DSP), and any suitable processors, controllers, microcontrollers, etc. The computing unit 1301 performs the respective methods and processes described above, such as the in-vehicle ethernet test method. For example, in some embodiments, the in-vehicle ethernet testing method may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as storage component 1308. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 1300 via the ROM 1302 and/or the communication unit 1309. When the computer program is loaded into RAM 1303 and executed by computing unit 1301, one or more steps of the in-vehicle ethernet testing method described above may be performed. Alternatively, in other embodiments, computing unit 1301 may be configured to perform the in-vehicle ethernet testing method in any other suitable manner (e.g., by means of firmware).

Various implementations of the systems and techniques described here above can be implemented in digital electronic circuitry, integrated circuit systems, field programmable gate arrays (Field Program Gate Array, FPGAs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), application specific standard products (Application Specific Standard Parts, ASSPs), systems On a Chip (SOC), complex programmable logic devices (Complex Programming Logic Device, CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.

Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM or flash Memory), an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local area network (Local Area Network, LAN), wide area network (Wide Area Network, WAN) and the internet.

The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service ("Virtual Private Server" or simply "VPS") are overcome. The server may also be a server of a distributed system or a server that incorporates a blockchain.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the disclosed aspects are achieved, and are not limited herein.

The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.

Claims

1. An in-vehicle ethernet testing device, comprising:

2. The in-vehicle ethernet testing device of claim 1, wherein the connection assembly comprises a first connector;

in the physical layer test of the device to be tested, one end of the first connector is connected with the device to be tested, the other end of the first connector is connected with the vehicle-mounted Ethernet physical layer chip, and the control component controls the vehicle-mounted Ethernet physical layer chip to perform the physical layer test of the device to be tested;

in the fault test of the wire harness to be tested, one end of the first connector is connected with one end of the wire harness to be tested, the other end of the first connector is connected with the vehicle-mounted Ethernet physical layer chip, the other end of the wire harness to be tested is suspended, and the control assembly controls the vehicle-mounted Ethernet physical layer chip to test the open circuit fault and/or the short circuit fault of the wire harness to be tested.

3. The in-vehicle ethernet testing device of claim 2, wherein the connection assembly further comprises a second connector and a third connector;

the test assembly further comprises a wire harness loss test circuit, one end of the wire harness loss test circuit is connected with the second connector and the third connector, and the other end of the wire harness loss test circuit is connected with the control assembly;

In the loss test of the wire harness to be tested, the second connector is connected with one end of the wire harness to be tested, the third connector is connected with the other end of the wire harness to be tested, and the control assembly controls the wire harness loss test circuit to conduct wire harness loss test on the wire harness to be tested.

4. The in-vehicle ethernet testing device of claim 3, wherein the third connector is the same connector as the first connector;

the test assembly further comprises a switch circuit, wherein a first end of the switch circuit is connected with the vehicle-mounted Ethernet physical layer chip, a second end of the switch circuit is connected with the wire harness loss test circuit, and a third end of the switch circuit is connected with the first connector;

in the fault test of the wire harness to be tested, the first connector is connected with one end of the wire harness to be tested, the other end of the wire harness to be tested is suspended, the control assembly controls the switch circuit to establish connection between the first connector and the vehicle-mounted Ethernet physical layer chip, and controls the vehicle-mounted Ethernet physical layer chip to test the open circuit fault and/or the short circuit fault of the wire harness to be tested;

in the loss test of the wire harness to be tested, the first connector is connected with one end of the wire harness to be tested and the second connector is connected with the other end of the wire harness to be tested, the control component controls the switch circuit to establish connection between the first connector and the wire harness loss test circuit, and controls the wire harness loss test circuit to conduct wire harness loss test on the wire harness to be tested.

5. The on-board ethernet testing device of claim 4, wherein the harness loss testing circuit comprises a signal generation circuit, a signal transceiver circuit, a signal amplification circuit, and an analog-to-digital conversion circuit;

the signal generating circuit is connected with the control component and the signal receiving and transmitting circuit;

the signal receiving and transmitting circuit is connected with the signal amplifying circuit, the second connector and the switch circuit;

the signal amplifying circuit is connected with the analog-to-digital conversion circuit;

the analog-to-digital conversion circuit is connected with the control component;

in the loss test of the wire harness to be tested, the control component controls the signal generating circuit to generate an electric signal, and the electric signal sequentially passes through the signal receiving and transmitting circuit, the switch circuit, the first connector, the wire harness to be tested, the second connector, the signal receiving and transmitting circuit, the signal amplifying circuit and the analog-to-digital conversion circuit to reach the control component.

6. The in-vehicle ethernet testing device of claim 5, wherein the signal transceiving circuit is a radio frequency transceiving circuit and/or the signal amplifying circuit is a voltage controlled amplifying circuit.

7. The in-vehicle ethernet testing device according to any one of claims 3 to 6, wherein the loss test of the wire harness under test comprises a test of insertion loss and/or return loss of the wire harness under test.

8. The in-vehicle ethernet testing apparatus of any of claims 1-6, wherein the physical layer testing of the device under test comprises at least one of: the physical layer connection state test of the equipment to be tested, the signal quality evaluation of the equipment to be tested and the data link bandwidth test of the equipment to be tested.

9. The in-vehicle ethernet testing device according to any one of claims 1 to 6, wherein the in-vehicle ethernet testing device further comprises:

the storage component is used for storing the test results of the equipment to be tested and/or the wire harness to be tested;

and/or an output component is used for outputting the test result of the equipment to be tested and/or the wire harness to be tested.

10. The in-vehicle ethernet testing method applied to the in-vehicle ethernet testing device of any one of claims 1 to 9, wherein the in-vehicle ethernet testing method comprises:

determining a test mode;

11. The method for testing the on-board ethernet according to claim 10, wherein the on-board ethernet physical layer chip in the control testing component performs a physical layer test on the device under test connected to the connection component, so as to obtain a test result of the device under test, and the method comprises:

and testing the physical layer connection state of the equipment to be tested through the vehicle-mounted Ethernet physical layer chip to obtain the physical layer connection state of the equipment to be tested.

12. The on-board ethernet testing method of claim 11, further comprising:

if the physical layer connection state is abnormal, outputting prompt information of physical layer connection failure, and ending the test of the device to be tested.

13. The on-board ethernet testing method of claim 11, further comprising:

and if the physical layer connection state is normal, evaluating the signal quality of the equipment to be tested through the vehicle-mounted Ethernet physical layer chip to obtain a signal quality evaluation value.

14. The on-board ethernet testing method of claim 13, further comprising:

and if the signal quality evaluation value is smaller than the signal quality threshold, outputting prompt information of signal quality abnormality and the signal quality evaluation value, and ending the test of the equipment to be tested.

15. The on-board ethernet testing method of claim 13, further comprising:

and if the signal quality evaluation value is greater than or equal to the signal quality threshold value, testing the data link bandwidth of the equipment to be tested to obtain a bandwidth test value of the equipment to be tested.

16. The on-board ethernet testing method of claim 15, further comprising;

outputting the prompting information of the normal physical layer test, the signal quality evaluation value and the bandwidth test value if the bandwidth test value is greater than or equal to the bandwidth threshold value, otherwise outputting the prompting information of the abnormal data link bandwidth and the bandwidth test value.

17. The method for testing the on-board ethernet according to any one of claims 10 to 16, wherein the controlling the on-board ethernet physical layer chip in the testing component performs a physical layer test on the device under test connected to the connection component, and before obtaining the test result of the device under test, the method further comprises:

And the control switch circuit establishes connection between a first connector in the connection assembly and the vehicle-mounted Ethernet physical layer chip, and the first connector is connected with the equipment to be tested.

18. The method for testing the on-board ethernet according to any one of claims 10 to 16, wherein the controlling the on-board ethernet physical layer chip to test the harness to be tested connected to the connection component for a short-circuit fault and/or an open-circuit fault, and before obtaining the fault test result of the harness to be tested, further comprises:

the control switch circuit establishes connection between a first connector and the vehicle-mounted Ethernet physical layer chip, the first connector is connected with one end of the wire harness to be tested, and the other end of the wire harness to be tested is suspended.

19. The in-vehicle ethernet testing method according to any one of claims 10 to 16, further comprising:

if the fault test result indicates that the wire harness to be tested is short-circuited, outputting prompt information of the short circuit of the wire harness and ending the test of the wire harness to be tested;

if the fault test result indicates that the wire harness to be tested is broken, outputting prompt information of wire harness broken circuit, and ending the test of the wire harness to be tested.

20. The on-board ethernet testing method of claim 19, further comprising:

and if the fault test result indicates that the wire harness to be tested is not short-circuited and is not open-circuited, testing the insertion loss and/or the return loss of the wire harness to be tested through a wire harness loss test circuit to obtain an insertion loss test value and a return loss test value.

21. The on-board ethernet testing method of claim 20, further comprising:

if the insertion loss test value is smaller than the insertion loss threshold value and the return loss test value is smaller than the return loss threshold value, outputting prompting information of normal wire harness, the insertion loss test value and the return loss test value, otherwise outputting prompting information of wire harness loss fault, the insertion loss test value and the return loss test value.

22. The method for testing the vehicle-mounted ethernet according to claim 20, wherein before the insertion loss and/or the return loss of the wire harness to be tested are tested by the wire harness loss testing circuit to obtain the insertion loss test value and the return loss test value, the method further comprises:

the control switch circuit establishes connection between a first connector in the connection assembly and the wire harness loss test circuit, one end of the wire harness to be tested is connected with the first connector, and the other end of the wire harness to be tested is connected with a second connector in the connection assembly.

23. An electronic device, comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the in-vehicle ethernet testing method of any of claims 10 to 22.

24. An in-vehicle apparatus comprising the in-vehicle ethernet testing device according to any one of claims 1 to 9.

25. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the in-vehicle ethernet testing method of any one of claims 10 to 22.

26. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the in-vehicle ethernet testing method of any of claims 10 to 22.