CN213403042U - Universal network hardware-in-loop test system - Google Patents

Abstract

The utility model discloses a universal network hardware-in-the-loop test system, wherein, a PXI bus control system and a measurement distribution and fault injection module are respectively connected with an industrial computer and a network topology configuration module; the power supply module is used for supplying power to all components of the system; the network topology configuration module is connected with the measured point through an external bus cable and a connector; in the network topology configuration module, a bus voltage acquisition unit, a bus signal acquisition unit and an I/O execution unit which are arranged in parallel are respectively connected with a digital signal processing unit and a network topology program control switch, the network topology program control switch distributes a plurality of sub-network program control switches to be in one-to-one correspondence with all sub-networks of a tested whole vehicle, and the sub-network program control switch distributes a plurality of single-controller program control switches to be in one-to-one correspondence with controllers in the sub-networks of the tested whole vehicle. The utility model discloses can realize single controller, the integrated and whole car integrated network bus automation test of subnet, and the nimble switching of test configuration environment.

Description

Universal network hardware-in-loop test system

Technical Field

The utility model belongs to the technical field of passenger car electrical test, concretely relates to universalization network hardware is at ring test system.

Background

The bus network test is an important link for developing passenger cars, and provides powerful guarantee for the reliability and correctness of electric systems of the passenger cars. The bus network test system applied to the automobile field at present needs to configure an independent test environment for each test. When the traditional test system is switched among single controller test, subnet network test and whole vehicle network test, hardware connection and software matching debugging need to be carried out on the test environment again, so that the test period is long, the efficiency is low and the test consistency of a physical layer is poor. Moreover, for different test vehicle types, the traditional test system needs to design and modify hardware connection to match the test vehicle type network topology, needs professional maintenance and is expensive in development cost.

Disclosure of Invention

To the defect that exists among the above-mentioned prior art, the utility model discloses a universalization network hardware is at ring test system realizes single controller, the integrated and whole car integrated network bus automation test of subnet to automatic generation, output test report. The system can realize flexible switching of different test configuration environments so as to solve the problems of long test period, low efficiency and poor test consistency of the traditional network. With the attached drawings, the technical scheme of the utility model is as follows:

a universal network hardware-in-the-loop test system comprises an industrial computer, a PXI bus control system, a power supply module, a measurement distribution and fault injection module, a network topology configuration module, a measurement control wiring harness, a power supply cable, an external bus cable and a connector;

the industrial computer is respectively connected with the PXI bus control system and the measurement distribution and fault injection module through measurement control wiring harnesses, and the PXI bus control system and the measurement distribution and fault injection module are respectively connected with the network topology configuration module through the measurement control wiring harnesses;

the power supply module supplies power to the industrial computer, the PXI bus control system, the measurement distribution and fault injection module and the network topology configuration module through power supply cables respectively;

the network topology configuration module is connected with the measured controller, the subnet or the whole vehicle rack through an external bus cable and a connector;

in the network topology configuration module, a digital signal processing unit is respectively connected with a bus voltage acquisition unit, a bus signal acquisition unit and an I/O execution unit, and the bus voltage acquisition unit, the bus signal acquisition unit and the I/O execution unit are connected in parallel and then connected in series with a network topology program-controlled switch;

the network topology program-controlled switch is composed of a subnet program-controlled switch and a single-controller program-controlled switch, the network topology program-controlled switch distributes a plurality of subnet program-controlled switches with independent communication addresses according to the whole vehicle bus topology to be connected with all subnets of a whole vehicle to be tested in a one-to-one correspondence mode, and a plurality of single-controller program-controlled switches with independent communication addresses are distributed under each subnet program-controlled switch to be connected with all controllers in the whole vehicle subnet to be tested in a one-to-one correspondence mode.

Furthermore, the PXI bus control system is composed of a CAN bus communication card, a LIN bus communication card and an I/O control module which are mutually and independently arranged;

the CAN bus communication card, the LIN bus communication card and the I/O control module are respectively connected with the network topology configuration module through a measurement control wiring harness;

the CAN bus communication card and the LIN bus communication card send analog bus communication messages to the tested controller or the integrated network according to the test requirements and process the received bus signals;

and the I/O control module controls an I/O execution unit in the network topology configuration module according to the test requirement.

Furthermore, the power supply module consists of an alternating current power distribution supply, a direct current distribution box and a programmable linear direct current power supply;

the alternating current power distribution power supply supplies power to the industrial computer, the PXI bus control system and the measurement distribution and fault injection module through power supply cables respectively;

the direct current distribution box supplies power to the network topology configuration module through a power supply cable;

the programmable linear direct current power supply supplies power to the measured controller, the subnet or the whole vehicle rack through the power supply cable and the network topology configuration module respectively.

Furthermore, the measurement distribution and fault injection module consists of an oscilloscope, a program-controlled digital universal meter, a fault analog adaptation box and a signal interference adaptation box which are arranged independently;

the oscilloscope, the program-controlled digital universal meter, the fault analog adaptation box and the signal interference adaptation box are respectively connected with the network topology configuration module through a measurement control wiring harness;

the oscilloscope and the program-controlled digital universal meter are used for carrying out physical layer measurement on a bus and an analog signal of a measured controller or an integrated network;

the fault simulation adaptive box performs simulation signal fault injection on the tested controller or the integrated network according to the test requirement;

and the signal interference adaptation box interferes the bus signal of the tested controller or the integrated network according to the test requirement.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. universalization network hardware has platform ization network test function at ring test system, under the condition that does not change test software and hardware environment, through setting up different test software configurations (change signal communication type, test function module and test network connection and match), realizes the nimble switching to different grade type bus network test (single controller test, subnet network test and whole car network test) and different network topology motorcycle types tests.

2. Universalization network hardware makes different grade type bus network test and different network topology motorcycle types switch the process and can not receive the influence of human factor through standardized test method, the data input/output and the programmed control of quantization at ring test system to reduce test cycle, improve work efficiency and guaranteed the uniformity of test.

Drawings

FIG. 1 is a block diagram of a generalized network hardware-in-the-loop test system according to the present invention;

fig. 2 is a schematic diagram of a network topology configuration module in a ring test system of the generalized network hardware of the present invention.

1-1 standard cabinet, 1-2 industrial computer, 1-3PXI bus control system,

1-4 power supply modules, 1-5 measurement distribution and fault injection modules,

1-6 network topology configuration module, 1-7 measurement control wiring harness, 1-8 power supply cable,

1-9 external bus cable and connector, 1-10CAN bus communication card,

1-11LIN bus communication card, 1-12I/O control module, 1-13 AC power distribution source,

1-14 DC distribution boxes, 1-15 programmable linear DC power supplies,

1-16 oscilloscopes, 1-17 program-controlled digital universal meters, 1-18 fault simulation adapter boxes,

1-19 signal interference adaptation boxes;

2-1 digital signal processing unit, 2-2 bus voltage acquisition unit, 2-3 bus signal acquisition unit,

2-4I/O execution units, 2-5 network topology program control switches, 2-6 control wire harnesses,

2-7 signal wire harnesses, 2-8 subnet program-controlled switches and 2-9 single controller program-controlled switches.

Detailed Description

For clear and complete description of the technical solution and the specific working process of the present invention, the following embodiments are provided in conjunction with the accompanying drawings of the specification:

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1, the utility model discloses a universalization network hardware is at ring test system, include: the system comprises a standard cabinet 1-1, an industrial computer 1-2, a PXI bus control system 1-3, a power module 1-4, a measurement distribution and fault injection module 1-5, a network topology configuration module 1-6, a measurement control wiring harness 1-7, a power supply cable 1-8 and an external bus cable and connector 1-9; the industrial computer 1-2, the PXI bus control system 1-3, the power supply module 1-4, the measurement distribution and fault injection module 1-5 and the network topology configuration module 1-6 are arranged in the standard cabinet 1-1 according to a layout rule.

The industrial computer 1-2 is respectively connected with a PXI bus control system 1-3 and a measurement distribution and fault injection module 1-5 through a measurement control wiring harness 1-7, and the PXI bus control system 1-3 and the measurement distribution and fault injection module 1-5 are respectively connected with a network topology configuration module 1-6 through the measurement control wiring harness 1-7;

the measurement distribution and fault injection module 1-5 is composed of an oscilloscope 1-16, a program control digital universal meter 1-17, a fault analog adaptation box 1-18 and a signal interference adaptation box 1-19 which are independently arranged, wherein the oscilloscope 1-16, the program control digital universal meter 1-17, the fault analog adaptation box 1-18 and the signal interference adaptation box 1-19 are respectively connected with a network topology configuration module 1-6 through a measurement control wiring harness 1-7; the oscilloscopes 1 to 16 and the program control digital universal meters 1 to 17 are used for carrying out physical layer measurement on a bus and an analog signal of a measured controller or an integrated network; the fault simulation adaptive boxes 1-18 carry out simulation signal fault injection on the tested controller or the integrated network according to the test requirements; and the signal interference adaptation boxes 1 to 19 interfere the bus signals of the tested controller or the integrated network according to the test requirements.

The PXI bus control system 1-3 is composed of a CAN bus communication card 1-10, an LIN bus communication card 1-11 and an I/O control module 1-12 which are arranged independently, wherein the CAN bus communication card 1-10, the LIN bus communication card 1-11 and the I/O control module 1-12 are respectively connected with a network topology configuration module 1-6 through a measurement control wiring harness 1-7; the CAN bus communication cards 1-10 and the LIN bus communication cards 1-11 send analog bus communication messages to a tested controller or an integrated network according to test requirements and process received bus signals; the I/O control module 1-12 controls the I/O execution unit in the network topology configuration module 1-6 according to the test requirement.

The power supply module 1-4 consists of an alternating current power distribution power supply 1-13, a direct current distribution box 1-14 and a programmable linear direct current power supply 1-15; the alternating current power distribution power supply 1-13 respectively supplies power to the industrial computer 1-2, the PXI bus control system 1-3 and the measurement distribution and fault injection module 1-5 through power supply cables 1-8; the direct current distribution boxes 1-14 supply power to the network topology configuration modules 1-6 through power supply cables 1-8; the programmable linear direct current power supplies 1-15 respectively supply power to the measured controller, the subnet or the whole vehicle rack through the power supply cables 1-8 and the network topology configuration modules 1-6.

The network topology configuration module 1-6 is connected with the measured controller, the subnet or the whole vehicle rack through an external bus cable and a connector 1-9.

The industrial computer 1-2 respectively configures a PXI bus control system 1-3 and a measurement distribution and fault injection module 1-5 according to the test requirements, and the PXI bus control system 1-3 comprises: the communication board cards including the CAN bus communication cards 1-10, the LIN bus communication cards 1-11 and the I/O control modules 1-12 are set to the bus communication type required for the test and called from the measurement distribution and fault injection modules 1-5 the required ones including: when different types of network tests are switched, only a PXI bus control system 1-3 and a measurement distribution and bus fault injection module 1-5 are needed to be configured, and the signal communication type and the test function module are replaced without changing software and hardware test environments, so that the flexible switching of the different types of bus network tests is realized; wherein:

the CAN bus communication cards 1-10 and the LIN bus communication cards 1-11 set a single or a plurality of channels to perform bus communication with the network topology configuration modules 1-6 according to the bus type of the integrated network to be tested, so that the CAN bus communication cards 1-10 and the LIN bus communication cards 1-11 respectively perform communication with the integrated network to be tested;

the I/O control module 1-12 sets single or multiple channels according to the analog signal type of the measured controller to communicate with the network topology configuration module 1-6 through analog signals.

The industrial computer 1-2 configures the network topology configuration module 1-6 through the PXI bus control system 1-3, and the network topology configuration module 1-6 can allocate any plurality of independent communication addresses, subnet program control switches and single controller program control switches to be connected with the controller in the tested network according to the bus topology of the tested whole vehicle.

When the whole vehicle network is tested, the network topology configuration module sets a subnet program-controlled switch and a single controller program-controlled switch to be closed and connected with the whole vehicle network; when the subnet network is tested, the network topology configuration module sets the subnet program-controlled switches corresponding to the tested subnet and all the single-controller program-controlled switches on the subnet to be closed; when the single controller is tested, the network topology configuration module sets the subnet program control switch which is only corresponding to the tested controller and the single controller program control switch to be closed. Therefore, the test system can simultaneously meet the requirements of single controller test, subnet network test and whole vehicle network test without rebuilding the test environment, and can be expanded at will according to the requirements of the test bus topological structure.

The network topology configuration modules 1-6 are used for distributing independent communication addresses to be matched with the tested controller or the integrated network, inputting buses and analog signals simulated by the PXI bus control system 1-3 and the measurement distribution and fault injection modules 1-5, collecting the buses and analog signals sent by the tested controller or the integrated network and feeding the buses and analog signals back to the PXI bus control system 1-3 and the measurement distribution and bus fault injection modules 1-5 for processing, and therefore closed-loop control is achieved.

As shown in fig. 2, the network topology configuration modules 1-6 include: the system comprises a digital signal processing unit 2-1, a bus voltage acquisition unit 2-2, a bus signal acquisition unit 2-3, an I/O execution unit 2-4, a network topology program control switch 2-5, a control wire harness 2-6 and a signal wire harness 2-7.

The digital signal processing unit 2-1 is respectively connected with the bus voltage acquisition unit 2-2, the bus signal acquisition unit 2-3 and the I/O execution unit 2-4, and the bus voltage acquisition unit 2-2, the bus signal acquisition unit 2-3 and the I/O execution unit 2-4 are connected in parallel and then connected in series with the network topology program control switch 2-5;

the network topology program control switches 2-5 are formed by serially and parallelly connecting subnet program control switches 2-8 and single controller program control switches 2-9, the number of the subnet program control switches 2-8 is set according to test requirements (the number is set to 1 when a single controller is tested and a subnet network is tested, and the number is set to the number of complete vehicle network topology subnets when a complete vehicle is tested), but not limited to the number of certain vehicle type subnets, the number can be infinitely expanded by a digital signal processing unit 2-1, and the network topology program control switches 2-5 correspond a plurality of subnet program control switches 2-8 with independent communication addresses to all subnets of a complete vehicle to be tested one to one according to the complete vehicle bus topology; and a plurality of single-controller program-controlled switches 2-9 with independent communication addresses are distributed under each subnet program-controlled switch 2-8 to be matched with all the controllers of the subnet in a one-to-one manner, and the number of the switches can be infinitely expanded by a digital signal processing unit.

The digital signal processing unit 2-1 configures the bus voltage acquisition unit 2-2, the bus signal acquisition unit 2-3, the I/O execution unit 2-4 and the network topology program control switch 2-5 through the control wiring harness 2-6 according to the configuration requirement sent by the PXI bus control system 1-3. Meanwhile, the digital signal processing unit 2-1 receives bus voltage signals acquired by the bus voltage acquisition module 2-2, bus digital signals acquired by the bus signal acquisition module 2-3 and analog signals after I/O operation executed by the I/O execution module 2-4 through the signal wiring harness 2-7, and feeds the analog signals back to the PXI bus control system 1-3 and the measurement distribution and bus fault injection module 1-5 through the measurement control wiring harness 1-7.

The test process of the universal network hardware in the ring test system is explained as follows:

before test operation, the network topology program-controlled switch 2-5 receives a control signal of the digital signal processing unit 2-1, the sub-network program-controlled switches 2-8 and the single-controller program-controlled switches 2-9 are configured to be switched on and off according to test requirements, the network topology program-controlled switches 2-5 correspond a plurality of sub-network program-controlled switches 2-8 with independent communication addresses to all sub-networks of a tested whole vehicle one by one according to the bus topology of the whole vehicle, and a plurality of single-controller program-controlled switches 2-9 with independent communication addresses are distributed under each sub-network program-controlled switch 2-8 to be matched with all sub-network controllers one by one;

when the whole vehicle network is tested, all the subnet program control switches 2-8 and the single controller program control switches 2-9 are closed, and the digital signal processing unit 2-1, the bus voltage acquisition module 2-2, the bus signal acquisition module 2-3 and the I/O execution module 2-4 monitor the whole vehicle network through the signal wire harness 2-7;

when a certain subnet network is tested, the subnet program-controlled switches 2-8 corresponding to the subnet to be tested and all the single-controller program-controlled switches 2-9 below the subnet to be tested are closed, other network topology program-controlled switches 2-5 are opened, and the digital signal processing unit 2-1, the bus voltage acquisition module 2-2, the bus signal acquisition module 2-3 and the I/O execution module 2-4 only monitor the subnet to be tested through the signal wire harness 2-7;

when the single controller is tested, the subnet program control switches 2-8 corresponding to the tested controller and the single controller program control switches 2-9 corresponding to the subnet program control switches are closed, other network topology program control switches 2-5 are disconnected, and the digital signal processing unit 2-1, the bus voltage acquisition module 2-2, the bus signal acquisition module 2-3 and the I/O execution module 2-4 only monitor the tested controller through the signal wire harness 2-7;

after matching, a test case program in the industrial computer 1-2 carries out system integration calling on the PXI bus control system 1-3 and the measurement distribution and bus fault injection module 1-5 according to the writing script sequence, an automatic test scheme is completed through matching of the network topology configuration module 1-6 and the measured controller, and a test report is automatically generated and output.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (4)

1. A generalized network hardware-in-the-loop test system is characterized in that:

the system comprises an industrial computer, a PXI bus control system, a power supply module, a measurement distribution and fault injection module, a network topology configuration module, a measurement control wiring harness, a power supply cable, an external bus cable and a connector;

the industrial computer is respectively connected with the PXI bus control system and the measurement distribution and fault injection module through measurement control wiring harnesses, and the PXI bus control system and the measurement distribution and fault injection module are respectively connected with the network topology configuration module through the measurement control wiring harnesses;

the power supply module supplies power to the industrial computer, the PXI bus control system, the measurement distribution and fault injection module and the network topology configuration module through power supply cables respectively;

the network topology configuration module is connected with the measured controller, the subnet or the whole vehicle rack through an external bus cable and a connector;

in the network topology configuration module, a digital signal processing unit is respectively connected with a bus voltage acquisition unit, a bus signal acquisition unit and an I/O execution unit, and the bus voltage acquisition unit, the bus signal acquisition unit and the I/O execution unit are connected in parallel and then connected in series with a network topology program-controlled switch;

the network topology program-controlled switch is composed of a subnet program-controlled switch and a single-controller program-controlled switch, the network topology program-controlled switch distributes a plurality of subnet program-controlled switches with independent communication addresses according to the whole vehicle bus topology to be connected with all subnets of a whole vehicle to be tested in a one-to-one correspondence mode, and a plurality of single-controller program-controlled switches with independent communication addresses are distributed under each subnet program-controlled switch to be connected with all controllers in the whole vehicle subnet to be tested in a one-to-one correspondence mode.

2. The generalized network hardware-in-the-loop test system of claim 1, wherein:

the PXI bus control system consists of a CAN bus communication card, a LIN bus communication card and an I/O control module which are arranged independently;

the CAN bus communication card, the LIN bus communication card and the I/O control module are respectively connected with the network topology configuration module through a measurement control wiring harness;

the CAN bus communication card and the LIN bus communication card send analog bus communication messages to the tested controller or the integrated network according to the test requirements and process the received bus signals;

and the I/O control module controls an I/O execution unit in the network topology configuration module according to the test requirement.

3. The generalized network hardware-in-the-loop test system of claim 1, wherein:

the power supply module consists of an alternating current power distribution power supply, a direct current distribution box and a programmable linear direct current power supply;

the alternating current power distribution power supply supplies power to the industrial computer, the PXI bus control system and the measurement distribution and fault injection module through power supply cables respectively;

the direct current distribution box supplies power to the network topology configuration module through a power supply cable;

the programmable linear direct current power supply supplies power to the measured controller, the subnet or the whole vehicle rack through the power supply cable and the network topology configuration module respectively.

4. The generalized network hardware-in-the-loop test system of claim 1, wherein:

the measurement distribution and fault injection module consists of an oscilloscope, a program-controlled digital universal meter, a fault analog adaptation box and a signal interference adaptation box which are arranged independently;

the oscilloscope, the program-controlled digital universal meter, the fault analog adaptation box and the signal interference adaptation box are respectively connected with the network topology configuration module through a measurement control wiring harness;

the oscilloscope and the program-controlled digital universal meter are used for carrying out physical layer measurement on a bus and an analog signal of a measured controller or an integrated network;

the fault simulation adaptive box performs simulation signal fault injection on the tested controller or the integrated network according to the test requirement;

and the signal interference adaptation box interferes the bus signal of the tested controller or the integrated network according to the test requirement.

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