CN115617007A - Ethernet protocol vehicle-mounted entertainment system test bench construction method and test bench - Google Patents
Ethernet protocol vehicle-mounted entertainment system test bench construction method and test bench Download PDFInfo
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- CN115617007A CN115617007A CN202110799385.2A CN202110799385A CN115617007A CN 115617007 A CN115617007 A CN 115617007A CN 202110799385 A CN202110799385 A CN 202110799385A CN 115617007 A CN115617007 A CN 115617007A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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Abstract
The invention provides a method for building a test bench of a vehicle-mounted entertainment system of an Ethernet protocol and the test bench, wherein the building method comprises the following steps: (1) Drawing a schematic diagram of a test bench of the entertainment system according to a schematic diagram of a whole vehicle system; (2) According to the principle diagram of the entertainment system test bench, building the entertainment system test bench; (3) The method comprises the following steps that CAN bus test equipment is additionally arranged on an entertainment system test bench; (4) Connecting the electric device into a test bench of the entertainment system for debugging; (5) The method comprises the following steps that an Ethernet communication test device is additionally arranged on an entertainment system test bench; and (6) debugging the functions of the entertainment system test bench. The invention provides a method for building a test environment for the function test related to the current entertainment system Ethernet protocol, the test environment can be built quickly according to the method, the functional design problem of the entertainment system host can be found in the development stage, the development cycle of the entertainment system host is further effectively shortened, and more time is provided for the optimization of products.
Description
Technical Field
The invention relates to the field of vehicle testing, in particular to a vehicle-mounted entertainment system testing bench based on an Ethernet protocol.
Background
With the development of networks and electronic devices, vehicle-mounted intelligent entertainment systems are becoming the main interactive systems for drivers to communicate with vehicles.
The current vehicle-mounted CAN communication protocol adopts 500k bandwidth, and cannot bear the requirement of large-scale data transmission of the entertainment system, and the application of the Ethernet communication protocol CAN meet the data load of the current entertainment system to the maximum extent, so that the vehicle-mounted CAN communication protocol becomes the first choice of the vehicle-mounted communication protocol of the entertainment system. There are two major types of on-board Ethernet communication protocols, 100BASE-T1 and 1000BASE-T1, for hundreds of megabytes and gigabytes of data transfer, respectively.
In order to meet the market demand, the vehicle type proposed in recent years has more and more requirements on the functions of the entertainment system, and the entertainment system needs to be tested completely so as to reduce the error rate of the entertainment system and improve the reliability of each function of the entertainment system. For testing requirements of an entertainment system for testing a large number of functions, testing the environment through an entertainment system test bench is currently the most common and efficient way.
Different from the parallel connection and bridging connection mode of the vehicle-mounted CAN communication protocol, the vehicle-mounted Ethernet communication belongs to a star one-to-one communication mode, and the bridging connection mode is not feasible at present, so that the serial connection mode CAN be only adopted.
For the entertainment system test based on the vehicle-mounted CAN communication protocol, relatively mature test methods and test environments are already provided in the market, but the establishment of the entertainment system test environment based on the vehicle-mounted Ethernet communication protocol has no established scheme.
Disclosure of Invention
In order to improve the testing speed and accuracy of the entertainment system aiming at the Ethernet protocol, the invention provides a method for building a vehicle-mounted entertainment system testing bench of the Ethernet protocol.
The invention relates to a method for building a test bench of an Ethernet protocol vehicle-mounted entertainment system, which comprises the following steps:
(1) Acquiring a schematic diagram of a whole vehicle system, and drawing a schematic diagram of an entertainment system test bench according to the schematic diagram of the whole vehicle system;
(2) Building an entertainment system test bench according to the entertainment system test bench schematic diagram;
(3) The method comprises the following steps that CAN bus test equipment is additionally arranged on an entertainment system test bench;
(4) Connecting the electric device into a test bench of the entertainment system for debugging;
(5) The method comprises the following steps that an Ethernet communication test device is additionally arranged on an entertainment system test bench;
(6) And carrying out function debugging on the entertainment system test bench.
Preferably, the schematic diagram of the whole vehicle system records: and the whole vehicle electrical appliance connection information and/or the electrical appliance type selection information.
Preferably, the entertainment system test bench schematic illustrates: entertainment system appliance connection information and/or appliance type selection information.
Preferably, the entertainment system test bench is built, and the method comprises the following steps:
(2a) Building a structural frame of a test bench of the entertainment system;
(2b) Building a power supply circuit of a test bench of the entertainment system;
(2c) And building a device circuit of the entertainment system test bench.
Preferably, the debugging includes: CAN communication debugging, CAN diagnosis debugging and power line stability debugging.
Preferably, the method for adding the Ethernet communication test equipment to the entertainment system test bench comprises the following steps:
(4a) Cutting off 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines of the entertainment system test bench;
(4b) Respectively installing a butt plug A and a butt plug B at two ends of a 100BASE-T1 Ethernet cable and a 1000BASE-T1 Ethernet cable of the truncated entertainment system test bench and butting the two ends;
(4c) And disconnecting the butt joint plug, respectively connecting the butt joint plug A and the butt joint plug B into a Y-shaped line butt joint plug A 'and a Y-shaped line butt joint plug B' of the Ethernet communication test equipment, and connecting the Y-shaped line plug C of the Ethernet communication test equipment into the Ethernet communication test equipment.
Preferably, the function debugging includes: CAN communication debugging, CAN diagnosis debugging, 100BASE-T1 and 1000BASE-T1 Ethernet communication debugging, ethernet diagnosis debugging and power line stability debugging.
More preferably, the 100BASE-T1 and 1000BASE-T1 Ethernet communication debugging comprises the following steps:
(6a) Checking whether the Ethernet communication related function item of the entertainment system test bench is normal, and rewriting the parameters of the entertainment system test bench controller if the Ethernet communication related function item is abnormal; if the Ethernet communication related function item is normal, accessing Ethernet communication test equipment;
(6b) Disconnecting the butt joint plug, respectively connecting the butt joint plug A and the butt joint plug B into a Y-shaped wire butt joint plug A 'and a Y-shaped wire butt joint plug B' of the Ethernet communication test equipment, and connecting the Y-shaped wire plug C of the Ethernet communication test equipment into the Ethernet communication test equipment;
(6c) Performing on-off test of the master controller and the slave controller through Ethernet communication test equipment;
(6d) Building an Ethernet communication test software project, starting the Ethernet communication test software project after the Ethernet communication test software project is finished, checking whether the Ethernet protocol message is normally received and sent, if the Ethernet protocol message cannot be normally received and sent, checking the on-off performance of a master controller and a slave controller and the Ethernet communication test software project, and repeating the step (6 c) and the step (6 d) until the Ethernet protocol message can be normally received and sent; if the Ethernet protocol message can be normally received and sent, the Ethernet communication debugging of 100BASE-T1 and 1000BASE-T1 is completed.
More preferably, the ethernet diagnostic debugging mainly includes the following steps:
accessing Ethernet diagnosis debugging equipment and an upper computer, reading the diagnosis states of all controllers of the entertainment system test bench, and if all the controllers can be read and can respond to the Ethernet diagnosis message, the Ethernet diagnosis debugging is passed; if any controller can not be read, the controller is checked for failure and replaced, and the diagnostic state of all controllers of the entertainment system test bench is repeatedly read until the Ethernet diagnostic debugging is passed.
More preferably, after the function debugging of the entertainment system test bench is carried out, whether the function debugging of the entertainment system test bench passes is judged; if the entertainment system test bench passes the function debugging, the entertainment system test bench is built; if the entertainment system test bench fails in function debugging, performing on-off test on the entertainment system test bench and judging whether the on-off test on the entertainment system test bench passes; if the on-off test of the entertainment system test bench circuit passes, checking and modifying the schematic diagram of the entertainment system test bench, and repeating the steps (1) to (6) until the function debugging of the entertainment system test bench passes; and (4) if the on-off test of the entertainment system test bench circuit fails, changing the fault circuit, and repeating the step (6) until the entertainment system test bench function debugging passes.
In order to improve the testing speed and accuracy of the entertainment system aiming at the Ethernet protocol, the invention also provides a vehicle-mounted entertainment system testing bench of the Ethernet protocol, which comprises: the system comprises a gateway, CAN bus test equipment, an online connecting unit controller, a power amplifier controller, a whole vehicle host, a central controller, an instrument, a diagnostic interface, a whole vehicle starting hard wire signal output line, a storage battery normal electric signal output line and a grounding wire, wherein the CAN bus test equipment is accessed to the gateway through a CAN bus;
the online connection unit controller is accessed into the gateway through an OLN Ethernet cable, and is also respectively connected with a storage battery constant electric signal output line and a grounding wire;
the power amplifier controller is connected with the gateway through the CAN and is also respectively connected with a storage battery constant electric signal output line and a grounding line;
the whole vehicle host is connected to the gateway through a host Ethernet cable, and is also connected with a storage battery constant electric signal output line and a grounding wire respectively;
the central controller is connected with the gateway through a CAN (controller area network), and is also respectively connected with a vehicle starting hard wire signal output line, a battery cell normal electric signal output line and a grounding wire;
the instrument is connected to the gateway through the CAN, and is also respectively connected with a storage battery normal electric signal output line and a grounding line;
the diagnosis interface is accessed to the gateway through a diagnosis Ethernet activation line and a diagnosis CAN, and is also respectively connected with a whole vehicle starting hard line signal output line, a storage battery constant electric signal output line and a grounding line;
the whole vehicle starting hard wire signal output line is used for providing a whole vehicle starting signal;
the battery constant-current signal output line is used for providing a battery constant-current signal;
the grounding wire is used for grounding.
Preferably, the CAN bus test device includes: at least one of the expansion CAN, the power CAN, the comfort CAN, the chassis CAN and the infotainment CAN is respectively connected with the expansion CAN reading interface, the power CAN reading interface, the comfort CAN reading interface, the chassis CAN reading interface and the infotainment CAN reading interface and is used for transmitting expansion information, power information, comfort information, chassis information and infotainment information.
Preferably, the host ethernet line includes: 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines.
Preferably, the entertainment system test stand further comprises: and the Ethernet communication test equipment is respectively connected with the gateway and the whole vehicle host.
More preferably, the middle part of the host ethernet cable is provided with a docking plug a and a docking plug B, the docking plug a is plugged with the docking plug B, and the docking plug is arranged in the middle part of the host ethernet cable, so that the ethernet communication test equipment can be conveniently plugged or detached.
The invention provides a method for building a test environment for the function test related to the current entertainment system Ethernet protocol, and the test environment can be built quickly according to the method, so that the problem of functional design of the entertainment system host can be found in the development stage, thereby effectively shortening the development period of the entertainment system host and providing more time for the optimization of products.
Meanwhile, the entertainment system test bench based on the vehicle-mounted Ethernet protocol can flexibly select two modes of Ethernet direct connection or Ethernet serial connection test equipment to test the entertainment system test bench, can simulate the actual functional state of a vehicle, and can conveniently intercept Ethernet messages from the bench for fault analysis, thereby providing a solution for the current entertainment system test based on the vehicle-mounted Ethernet protocol.
Drawings
FIG. 1 is a flow chart of a method for building an entertainment system test bench based on a vehicle-mounted Ethernet protocol
FIG. 2 is a schematic diagram of an entertainment system test bench of the present invention
FIG. 3 is a flow chart of the present invention for building an entertainment system test bench
FIG. 4 is a flow chart of the present invention for an installed Ethernet test device
FIG. 5 is a flowchart of the Ethernet communication debugging process for 100BASE-T1 and 1000BASE-T1 according to the present invention
FIG. 6 is an entertainment system test stand 100BASE-T1 and 1000BASE-T1 Ethernet line connection scheme of the present invention
FIG. 7 is an Ethernet line connection scheme for an entertainment System test bench test device of the present invention
Description of the main element symbols:
1 diagnostic CAN2 extended CAN
3 power CAN4 comfortable CAN
5-chassis CAN 6 OLN Ethernet cable
7 host Ethernet 8 infotainment CAN
9 whole vehicle starting hard wire signal output line 10 storage battery constant current signal output line
11 ground wire 12 diagnostic ethernet activation wire
13 gateway
20 entertainment system test bench 21 ethernet cable
22 ethernet master controller 23 ethernet slave controller
24Y type line 25 Ethernet communication test equipment
21A docking plug A21B docking plug B
24A 'docking plug A' 24B 'docking plug B'
24C Y type line plug C
CI instrument 4RC reversing radar controller
OLN on-line connection unit controller AMP power amplifier controller
HU entire car host computer Switch Light headlight Switch
Diag diagnostic interface of BCM central controller
ECAN extended CAN reading interface ACAN power CAN reading interface
KCAN comfortable CAN reading interface FCAN chassis CAN reading interface
ICAN information entertainment CAN reading interface
Detailed Description
For the sake of clear description, the method for building the test bench of the entertainment system based on the vehicle-mounted ethernet protocol according to the present invention will be further described with reference to the accompanying drawings and embodiments.
The existing vehicle production has both universal accessories and special accessories, taking a K vehicle type as an example, economic version, comfortable version and luxury version of the No. 8230, and the No. 8230vehicle can carry different types or models of electric devices in the same entertainment system so as to expand the customer groups facing the same vehicle type. In order to improve the production efficiency and reduce the production cost, the economic version, the comfortable version and the luxury version of the K vehicle model \8230the \8230theK vehicle model \8230hasdifferent schematic diagrams of the whole vehicle system respectively, and the schematic diagram of the whole vehicle system records: and the whole vehicle electrical appliance connection information and/or the electrical appliance type selection information.
FIG. 1 is a flow chart of a method for building a test bench of an entertainment system based on a vehicle-mounted Ethernet protocol. The invention relates to a method for building an entertainment system test bench based on a vehicle-mounted Ethernet protocol, which comprises the following steps:
According to a K vehicle type whole vehicle system schematic diagram, an entertainment system test bench is determined, corresponding entertainment system electrical appliances are screened, and a corresponding schematic diagram scheme is made.
Specifically, in this embodiment, according to the schematic diagram of the entire vehicle system of the K vehicle type, the requirement of the entertainment system test bench can be determined: connecting wires, ground wires, a CAN bus, LIN wires, and Ethernet wires.
The CAN bus is a signal line with high message receiving and sending rate requirements of a controller in an electric device, and the controller is distributed under different CAN buses according to the definition of the CAN bus.
The LIN line is a signal line of a controller with low signal receiving and transmitting speed requirement in the electric device, the controller is distributed below the LIN line according to the definition of the LIN bus, and the LIN line of the controller distributed below the LIN bus is connected with the gateway.
The Ethernet line is a signal line with the highest message receiving and sending rate of the controller in the electric device, the vehicle-mounted Ethernet line is divided into a hundred-mega Ethernet (100 BASE-T1) wiring harness and/or a gigabit Ethernet (1000 BASE-T1) wiring harness, and theoretical transmission bandwidths are 100Mb and 1000Mb respectively.
The 12V power supply needs to be connected with all electric devices through fuses, and therefore stability of the electric device power supply of the whole vehicle is guaranteed.
After the corresponding entertainment system electrical devices are screened and a corresponding schematic diagram scheme is formulated, a schematic diagram of an entertainment system test bench is further drawn (see the schematic diagram of the entertainment system test bench shown in fig. 2). The principle drawing of the entertainment system test bench is a basic drawing built by the entertainment system test bench.
Building an entertainment system test bench according to the entertainment system test bench schematic diagram;
in the schematic diagram of the entertainment system test bench shown in fig. 2, 1 is a diagnostic CAN,2 is an extended CAN,3 is a power CAN,4 is a comfortable CAN, 5 is a chassis CAN, 6 is an OLN ethernet cable, 7 is a host ethernet cable, 8 is an infotainment CAN, 9 is a vehicle starting hard wire signal output line, 10 is a battery normal electric signal output line, 11 is a ground wire, 12 is a diagnostic ethernet activating line, CI is an instrument, 4RC is a reverse radar controller, OLN is an online connecting unit controller, AMP is a power amplifier controller, HU is a vehicle host, switch Light is a headlight Switch, BCM is a central controller, diag is a diagnostic interface, ECAN is an extended CAN read interface, ACAN is a power CAN read interface, KCAN CAN comfortable read interface, FCAN is a chassis read interface, and ICAN is an infotainment CAN read interface.
Firstly, a test bench of an entertainment system is built from a physical structure, and the test bench mainly comprises the following steps:
1) Building a structural framework of a test bench of an entertainment system;
2) Building a power supply circuit of the entertainment system test bench, selecting a corresponding wire diameter and a corresponding fuse according to the actual current of the access controller, and respectively connecting the wires and the ground wires of all entertainment system controllers;
3) And (3) building a device circuit of the entertainment system test bench, respectively connecting the CAN lines and the hard line trigger lines of all the entertainment system controllers, and performing on-off test on the circuit according to the schematic diagram of the entertainment system test bench after wiring.
Install CAN bus test equipment additional on entertainment system test rack:
the extended CAN2, the power CAN3, the comfortable CAN4, the chassis CAN5 and the infotainment CAN8 are connected into the CAN bus test equipment and the upper computer in a bridging mode.
Step 4
Debugging five groups of CAN accessing the entertainment system test bench:
the debugging comprises communication debugging of five groups of CAN, diagnosis debugging of five groups of CAN and power line stability debugging of five groups of CAN.
The communication debugging is a CAN bus message read by the upper computer through CAN bus test equipment, and if the message of each CAN line in the five groups of CAN CAN be received and the message of the CAN line has no error frame, the communication debugging of the CAN of the entertainment system test bench passes;
the diagnosis and debugging are CAN bus diagnosis messages and controller diagnosis lists which are read by the upper computer through diagnosis equipment, if the diagnosis messages of all CAN lines in the five groups of CAN CAN be received and all the controller diagnosis lists of the entertainment system test bench CAN be read, the diagnosis and debugging of the CAN of the entertainment system test bench are passed;
power supply line stability debugging is realized through the adjustment power, through the voltmeter measurement, by standard voltage 12V adjustment to 14.5V, whether have the ablation phenomenon by power cord, ground wire and the fuse of looking over each controller of entertainment system test bench, if appear ablating, then power cord, ground wire line footpath and fuse are adjusted according to table 1:
TABLE 1 selection of wire diameter, rated current and fuse
| Wire diameter | Rated current | Fuse model selection |
| 6mm 2 | 40A | 50A |
| 4mm 2 | 32-35A | 40A |
| 2.5mm 2 | 20-24A | 30A |
| 1.5mm 2 | 15-16A | 20A |
| 1mm 2 | 10-12A | 15A |
| 0.75mm 2 | 7.5A-8A | 10A |
| 0.5mm 2 | 5-6A | 10A |
| 0.35mm 2 | 4A | 5A |
Install ethernet communication test equipment additional on entertainment system test rack:
in order to realize the physical connection between the Ethernet communication test equipment and the rack, the Ethernet communication test equipment can be additionally installed through the following steps:
1) Cutting off 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines of the entertainment system test bench;
2) The method comprises the following steps of respectively installing a butt-joint plug A and a butt-joint plug B at two ends of a 100BASE-T1 Ethernet cable and a 1000BASE-T1 Ethernet cable of a truncated entertainment system test bench, and butting according to the following modes:
as shown in FIG. 6, 20 is the test rack of the entertainment system, 21 is the Ethernet lines of 100BASE-T1 and 1000BASE-T1 at the test rack end of the entertainment system, 22 is the Ethernet master controller, 23 is the Ethernet slave controller, 21A is the docking plug A, and 21B is the docking plug B.
3) The docking plug a21A and the docking plug B21B are respectively connected to the docking plug a '24A' and the docking plug B '24B' of the Y-type 24 of the ethernet communication test device 25, and the Y-type plug C24C is connected to the ethernet communication test device 25.
As shown in fig. 7, 20 is an entertainment system test bench, 21 is entertainment system test bench ends 100BASE-T1 and 1000BASE-T1 ethernet lines, 22 is an ethernet master controller, 23 is an ethernet slave controller, 24 is a Y-type line, and 25 is an ethernet test device; 21A and 21B are butt plugs of the Ethernet wire 21, 24A 'and 24B' are butt plugs of Y- type wire 24, and 24C is plug C of Y-type wire.
Carrying out function debugging on the entertainment system test bench:
the function debugging comprises the Ethernet communication debugging and the Ethernet diagnosis debugging of the entertainment system test bench 100BASE-T1 and 1000 BASE-T1.
1) 100BASE-T1 and 1000BASE-T1 Ethernet communication debugging, comprising:
a) Firstly, the Ethernet communication test equipment is disconnected, the entertainment system test bench docking plug 21A is docked with the docking plug 21B again, and whether the following related function items of the entertainment system test bench Ethernet communication are normal is checked:
I. for 1000BASE-T1 Ethernet communication functions: the host of the K vehicle type realizes software updating and upgrading through the T-BOX, namely an OTA (Over the air) function, namely the host can realize real-time downloading of updating data through network equipment; downloading host application in a host application market of a K vehicle type;
for 100BASE-T1 Ethernet communication functions: the host computer of K motorcycle type can show the image of 360 looks around the camera.
The functions can be explained in an entertainment system test bench, and the communication of the host 100BASE-T1 and the Ethernet 1000BASE-T1 of the K vehicle type is normal;
b) Disconnecting the docking plugs 21A and 21B, respectively connecting the docking plug 21A and the docking plug 21B to the Y-type docking plug 24A 'and the Y-type docking plug 24B' of the ethernet communication test device, and connecting the Y-type plug C of the ethernet communication test device to the ethernet communication test device 25; in this example, VN5640 of Vector corporation is adopted for the ethernet communication test device 25;
c) The Ethernet communication test equipment 25 performs the on-off test between the Ethernet gateway of the main controller 22 and the host of the slave controller 23, adopts the classic software CANoe in the industry to build the Ethernet communication test software engineering, completes the hardware channel configuration, can read the hardware communication state between the main controller 22 and the slave controller 23 through the test software engineering of the VN5640, and displays the Cable Connection is OK after accessing the Ethernet communication test equipment 25! "this indicates that there is no problem in the connection between the master controller 22 and the slave controller 23, and the on-off performance test of the master controller 22 and the slave controller 23 is passed.
Because the ethernet communication protocol adopts a point-to-point transmission mode, the master controller 22 sends a message to the specific slave controller 23 through an IP address and acquires a response from the slave controller 23 in the controller under the same lan, in this embodiment, the master controller is the ethernet gateway 13, and the slave controller is the vehicle host HU;
d) The method comprises the steps of establishing an Ethernet communication test software project by adopting a software CANoe which is classic in the industry, starting the Ethernet communication test software project after completing hardware channel configuration and other configurations, checking whether an Ethernet protocol message is normally transmitted and received, checking whether an error frame exists in the transmitting and receiving process, checking whether the Ethernet protocol message is normally transmitted and received, and enabling 100BASE-T1 and 1000BASE-T1 Ethernet communication to be debugged.
2) Ethernet diagnostic debug
The Ethernet diagnosis and debugging is based on the debugging of an entertainment system test bench by an Ethernet diagnosis protocol DoIP, firstly, an Ethernet diagnosis message Diagnose01 needs to be read in an Ethernet communication test software project, the Ethernet diagnosis message Diagnose01 can be normally received and sent, all nodes are normally communicated, and the Ethernet diagnosis, debugging and debugging are passed.
As shown in fig. 2, the test bench for the in-vehicle entertainment system of ethernet protocol created according to the above method includes: gateway, CAN bus test equipment, on-line connection unit controller, power amplifier controller, vehicle host, central controller, meter, diagnosis interface, vehicle starting hard wire signal output line, battery constant electric signal output line, and ground wire,
CAN bus test equipment passes through CAN bus access gateway, CAN bus test equipment includes: the extended CAN, the power CAN, the comfortable CAN, the chassis CAN and the infotainment CAN are respectively connected with the extended CAN reading interface, the power CAN reading interface, the comfortable CAN reading interface, the chassis CAN reading interface and the infotainment CAN reading interface and are used for transmitting extended information, power information, comfortable information, chassis information and infotainment information.
The online connecting unit controller is connected to the gateway through an OLN Ethernet cable, and is also respectively connected with a storage battery constant electric signal output line and a grounding wire;
the power amplifier controller is connected with the gateway through the CAN and is also respectively connected with a storage battery constant electric signal output line and a grounding line;
the whole car host computer passes through host computer ethernet line access gateway, and host computer ethernet line includes: 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines; the whole vehicle main machine is also respectively connected with a storage battery constant electric signal output line and a grounding wire.
The central controller is connected with the gateway through a CAN (controller area network), and is also respectively connected with a vehicle starting hard wire signal output line, a battery normal electric signal output line and a grounding wire;
the instrument is accessed to the gateway through the CAN and is also respectively connected with a storage battery normal electric signal output line and a grounding line;
the diagnosis interface is accessed to the gateway through a diagnosis Ethernet activation line and a diagnosis CAN, and is also respectively connected with a vehicle starting hard line signal output line, a storage battery constant electric signal output line and a grounding line;
the whole vehicle starting hard wire signal output line is used for providing a whole vehicle starting signal; the storage battery constant-current signal output line is used for providing a storage battery constant-current signal; the grounding wire is used for grounding.
The entertainment system test stand further comprises: and the Ethernet communication test equipment is respectively connected with the gateway and the whole vehicle host.
The invention provides a method for building an entertainment system test bench based on a vehicle-mounted Ethernet protocol, and provides a method for building a test environment for the function test related to the current entertainment system Ethernet protocol.
According to the method, a test environment can be quickly established, and the functional design problem of the entertainment system host can be found in the development stage, so that the development cycle of the entertainment system host is effectively shortened, and more time is provided for product optimization.
Meanwhile, the entertainment system test bench based on the vehicle-mounted Ethernet protocol can flexibly select two modes of Ethernet direct connection or Ethernet serial connection test equipment to test the entertainment system test bench, can simulate the actual functional state of a vehicle, and can conveniently intercept Ethernet messages from the bench for fault analysis, thereby providing a solution for the current entertainment system test based on the vehicle-mounted Ethernet protocol.
Claims (15)
1. A method for building a test bench of an Ethernet protocol vehicle-mounted entertainment system is characterized by comprising the following steps:
s1, drawing a schematic diagram of a test bench of an entertainment system according to a schematic diagram of a whole vehicle system;
s2, building an entertainment system test bench according to the entertainment system test bench schematic diagram;
s3, adding CAN bus test equipment on the entertainment system test bench;
s4, connecting the electric device to the entertainment system test bench for debugging;
s5, additionally arranging Ethernet communication testing equipment on the entertainment system testing bench;
and s6, carrying out function debugging on the entertainment system test bench.
2. The method for building the Ethernet protocol vehicle-mounted entertainment system test bench as claimed in claim 1, wherein the complete vehicle system schematic diagram records complete vehicle electrical connection information and/or electrical equipment type selection information.
3. The method of claim 1, wherein the schematic diagram of the entertainment system test bench describes: entertainment system appliance connection information and/or appliance type selection information.
4. The method for building an ethernet protocol in-vehicle entertainment system test bench as claimed in claim 1, wherein said building an entertainment system test bench comprises the steps of:
(2a) Building a structural frame of a test bench of the entertainment system;
(2b) Building a power supply circuit of a test bench of the entertainment system;
(2c) And building a device circuit of the entertainment system test bench.
5. The ethernet protocol in-vehicle entertainment system test bench set-up method of claim 1, wherein said debugging comprises: CAN communication debugging, CAN diagnosis debugging and power line stability debugging.
6. The method for building an ethernet protocol in-vehicle entertainment system test bench as claimed in claim 1, wherein the step of adding ethernet communication test equipment to the entertainment system test bench comprises the steps of:
(4a) Cutting off 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines of the entertainment system test bench;
(4b) Respectively installing a butt plug A and a butt plug B at two ends of a 100BASE-T1 Ethernet cable and a 1000BASE-T1 Ethernet cable of the truncated entertainment system test bench and butting the two ends;
(4c) And disconnecting the butt joint plug, respectively connecting the butt joint plug A and the butt joint plug B into a Y-shaped wire butt joint plug A 'and a Y-shaped wire butt joint plug B' of the Ethernet communication test equipment, and connecting the Y-shaped wire plug C of the Ethernet communication test equipment into the Ethernet communication test equipment.
7. The method of claim 1, wherein the debugging the functionality comprises: CAN communication debugging, CAN diagnosis debugging, 100BASE-T1 and 1000BASE-T1 Ethernet communication debugging, ethernet diagnosis debugging and power line stability debugging.
8. The method for building an Ethernet protocol in-vehicle entertainment system test bench of claim 7, wherein the 100BASE-T1 and 1000BASE-T1 Ethernet communication debugging comprises the steps of:
(6a) Checking whether the Ethernet communication related function item of the entertainment system test bench is normal, and rewriting the parameters of the entertainment system test bench controller if the Ethernet communication related function item is abnormal; if the Ethernet communication related function item is normal, accessing Ethernet communication test equipment;
(6b) Disconnecting the docking plug, respectively connecting the docking plug A and the docking plug B into a Y-shaped line docking plug A 'and a Y-shaped line docking plug B' of the Ethernet communication test equipment, and connecting the Y-shaped line plug C of the Ethernet communication test equipment into the Ethernet communication test equipment;
(6c) Performing on-off test on the master controller and the slave controller through Ethernet communication test equipment;
(6d) Building an Ethernet communication test software project, starting the Ethernet communication test software project after the Ethernet communication test software project is completed, checking whether the Ethernet protocol message is normally received and sent, if the Ethernet protocol message cannot be normally received and sent, checking the on-off of the master controller and the slave controller and the Ethernet communication test software project, and repeating the step (6 c) and the step (6 d) until the Ethernet protocol message can be normally received and sent; if the Ethernet protocol message can be normally received and transmitted, the Ethernet communication debugging of 100BASE-T1 and 1000BASE-T1 is completed.
9. The method for building an ethernet protocol in-vehicle entertainment system test bench as claimed in claim 7, wherein said ethernet diagnostics debug essentially comprises the steps of:
accessing Ethernet diagnosis debugging equipment and an upper computer, reading the diagnosis states of all controllers of the entertainment system test bench, and if all the controllers can be read and can respond to the Ethernet diagnosis message, the Ethernet diagnosis debugging is passed; if any controller can not be read, the controller is checked for failure and replaced, and the diagnostic state of all controllers of the entertainment system test bench is repeatedly read until the Ethernet diagnostic debugging is passed.
10. The method for building the test bench of the Ethernet protocol for the vehicle-mounted entertainment system according to claim 1, wherein after the function debugging of the test bench of the entertainment system is performed, it is first determined whether the function debugging of the test bench of the entertainment system is passed; if the entertainment system test bench passes the function debugging, the entertainment system test bench is built; if the entertainment system test bench fails in function debugging, performing on-off test on the entertainment system test bench and judging whether the on-off test on the entertainment system test bench passes; if the on-off test of the entertainment system test bench circuit passes, checking and modifying the entertainment system test bench schematic diagram, and repeating the steps s1 to s6 until the entertainment system test bench function debugging passes; and if the on-off test of the entertainment system test bench circuit fails, changing the fault circuit, and repeating the step s6 until the entertainment system test bench function debugging passes.
11. An ethernet protocol in-vehicle entertainment system test rack, comprising: gateway, CAN bus test equipment, on-line connection unit controller, power amplifier controller, vehicle host, central controller, meter, diagnosis interface, vehicle starting hard wire signal output line, battery constant electric signal output line, and ground wire,
the CAN bus test equipment is accessed to the gateway through the CAN bus;
the online connection unit controller is accessed into the gateway through an OLN Ethernet cable, and is also respectively connected with a storage battery constant electric signal output line and a grounding wire;
the power amplifier controller is connected with the gateway through the CAN and is also connected with a constant electric signal output line and a grounding line of the storage battery respectively;
the whole vehicle host is connected to the gateway through a host Ethernet cable, and is also connected with a storage battery constant electric signal output line and a grounding line respectively;
the central controller is connected with the gateway through a CAN (controller area network), and is also respectively connected with a vehicle starting hard wire signal output line, a battery normal electric signal output line and a grounding wire;
the instrument is connected to the gateway through the CAN, and is also respectively connected with a storage battery normal electric signal output line and a grounding line;
the diagnosis interface is accessed to the gateway through a diagnosis Ethernet activation line and a diagnosis CAN, and is also respectively connected with a whole vehicle starting hard line signal output line, a storage battery constant electric signal output line and a grounding line;
the whole vehicle starting hard wire signal output line is used for providing a whole vehicle starting signal;
the battery constant-current signal output line is used for providing a battery constant-current signal;
the grounding wire is used for grounding.
12. The ethernet protocol in-vehicle entertainment system test rack of claim 11, wherein the CAN bus test device comprises: at least one of the extended CAN, the power CAN, the comfortable CAN, the chassis CAN and the infotainment CAN is respectively connected with the extended CAN reading interface, the power CAN reading interface, the comfortable CAN reading interface, the chassis CAN reading interface and the infotainment CAN reading interface and is used for transmitting extended information, power information, comfortable information, chassis information and infotainment information.
13. The Ethernet protocol in-vehicle entertainment System test bench of claim 11, wherein the host Ethernet cable has a docking plug A and a docking plug B in the middle, and the docking plug A is plugged into the docking plug B.
14. The ethernet protocol in-vehicle entertainment system test rack of claim 11, wherein the host ethernet line comprises: 100BASE-T1 Ethernet lines and 1000BASE-T1 Ethernet lines.
15. The ethernet protocol in-vehicle entertainment system test rack of claim 11, further comprising: and the Ethernet communication test equipment is respectively connected with the gateway and the whole vehicle host.
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| CN116418655A (en) * | 2023-06-12 | 2023-07-11 | 广汽埃安新能源汽车股份有限公司 | TBOX fault repairing method and system |
| CN116418655B (en) * | 2023-06-12 | 2023-08-08 | 广汽埃安新能源汽车股份有限公司 | TBOX fault repairing method and system |
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