CN112804120A - Test system for automobile LIN bus data - Google Patents
Test system for automobile LIN bus data Download PDFInfo
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- CN112804120A CN112804120A CN202110019449.2A CN202110019449A CN112804120A CN 112804120 A CN112804120 A CN 112804120A CN 202110019449 A CN202110019449 A CN 202110019449A CN 112804120 A CN112804120 A CN 112804120A
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- 238000004891 communication Methods 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
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- 238000007405 data analysis Methods 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/04—Processing captured monitoring data, e.g. for logfile generation
- H04L43/045—Processing captured monitoring data, e.g. for logfile generation for graphical visualisation of monitoring data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/14—Arrangements for monitoring or testing data switching networks using software, i.e. software packages
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40234—Local Interconnect Network LIN
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Abstract
The invention relates to a test system of automobile LIN bus data, which is connected with a controller system ECU of an automobile through an LIN bus and comprises a PC end upper computer and a test tool, wherein the test tool is connected with the PC end upper computer through a USB data line, and the test tool is connected with the controller system ECU of the automobile through the LIN bus. The test system for the automobile LIN bus data is simple to operate, low in cost, professional, practical, small in size and convenient to carry.
Description
Technical Field
The invention relates to the field of automobile communication, in particular to a test system for automobile LIN bus data.
Background
LIN is an abbreviation of Local Interconnect Network, is a low-cost serial communication protocol, and can be applied to various fields of automobiles, household electrical appliances, office equipment and the like. In the era of car networking, LIN is more widely applied to distributed electronic network systems of automobiles, such as window controllers, car light control systems, wiper controllers, seat controllers, rainfall sensors and the like. Most of the current bus test tools contain many complex protocols and functions, are sold in bundles, are hundreds of thousands of times and expensive, and some of the bus test tools also need additional independent power supply equipment, so that the development and test of the related LIN bus ECU are high in cost.
Disclosure of Invention
In order to solve the problem that a vehicle LIN bus test tool in the prior art is high in cost, the invention provides a test system for vehicle LIN bus data.
The scheme for solving the technical problem is to provide a test system of automobile LIN bus data, wherein the test system is connected with a controller system of an automobile through an LIN bus and comprises a PC end upper computer and a test tool, the test tool is connected with the PC end upper computer through a USB data line, and the test tool is connected with the controller system of the automobile through the LIN bus; the test tool comprises: the first transceiver module is connected with the controller system through the LIN bus and is used for communicating LIN bus data with the controller system; the conversion module is connected with the first transceiver module and is used for carrying out data conversion between the LIN bus data and the USB data; the second transceiver module is connected with the conversion module, is connected with the PC end upper computer through the USB data line and is used for carrying out USB data communication with the PC end upper computer; and the PC side upper computer is used for testing the controller system according to the USB data and displaying a test result.
Preferably, the first transceiver module specifically includes: the test tool is characterized in that an LIN interface is arranged outside the test tool and used for communication, and the test system for the automobile LIN bus data comprises an LIN master node ECU and a plurality of LIN slave node ECUs which are connected with the LIN master node ECU.
Preferably, the conversion module specifically includes: the second transceiver module is internally provided with a fourth chip, the fourth chip comprises a first capacitor and a fourth resistor, a third pin is electrically connected with the first capacitor, the first capacitor is electrically connected with a grounding terminal, the fourth pin is electrically connected with the fourth resistor, the fourth resistor is electrically connected with the grounding terminal, a fifth pin, a sixth pin, a seventh pin, an eighth pin and a ninth pin are connected with a 3.3V voltage in parallel, a tenth pin, an eleventh pin and a twelfth pin are electrically connected with the grounding terminal, and a thirteenth pin is connected with a reset terminal.
Preferably, the second transceiver module is a USB data processing module, the first transceiver module is an LIN data receiving module, the conversion module is a USB data and LIN data conversion processing module, the second transceiver module further comprises an inverter module and a CPU, the USB data processing module, the LIN data receiving module, the USB data and LIN data conversion processing module, the inverter module and the CPU are electrically connected, the USB data processing module and the USB data and LIN data conversion processing module are electrically connected, and the LIN data receiving module and the USB data and LIN data conversion processing module are electrically connected.
Preferably, the controller system further comprises a power supply module, wherein the power supply module is connected with a power supply interface of the controller system and used for supplying power to the controller system.
Preferably, the power supply module specifically includes: the first transceiver module specifically includes: a second chip is arranged in the first transceiver module, a first pin of the second chip is electrically connected with a first resistor, the first resistor is electrically connected with a peak voltage end, and the peak voltage end is used for programming/erasing voltage; the second pin is electrically connected with a second resistor, the second resistor is electrically connected with a data sending end, and the data sending end is used for sending data; the twelfth pin of the second chip is electrically connected with a third resistor, the third resistor is electrically connected with a data receiving end, the data receiving end is used for receiving data, a fifth resistor is electrically connected between the twelfth pin and the third resistor, and the fifth resistor is electrically connected with a working voltage end; the fourteenth pin is electrically connected with the second capacitor, the second capacitor is electrically connected with the ground terminal, a second peak voltage end is electrically connected between the fourteenth pin and the second capacitor, and the second peak voltage end is used for programming/erasing voltage; the fifteenth pin is electrically connected with the grounding end; the eighth pin is electrically connected with the first fuse, the third capacitor is electrically connected between the eighth pin and the first fuse, the third capacitor is electrically connected with the grounding end, the first fuse is electrically connected with the automobile BUS end LINBUS end, the connection part of the first fuse and the LINBUS end is electrically connected with the 24V voltage stabilizing diode and the 15V voltage stabilizing diode in sequence, the 24V voltage stabilizing diode and the 15V voltage stabilizing diode are connected in series, and the 15V voltage stabilizing diode is electrically connected with the grounding end.
Preferably, the power supply voltage output by the power supply module is 12V, and the power supply module can supply power to the controller system with the working current not exceeding 100 mA.
Preferably, a plurality of different hierarchical levels of vehicle controllers are included in the controller system; then PC end host computer still includes: and the setting unit is used for issuing a setting instruction, and the testing tool converts the setting instruction into the LIN bus data and sends the LIN bus data to the controller system so as to construct a plurality of vehicle controllers into a controller node tree, thereby meeting the simulation test requirement of the controller system.
Preferably, the test system connects up to 16 of the vehicle controllers to form the controller node tree.
Preferably, a test software installation package is arranged in the test tool, the test software installation package is connected with any PC end upper computer through a USB interface, and the test software installation package in the test tool is copied and pasted to any PC end upper computer for installation.
Compared with the prior art, the test system for the automobile LIN bus data is simple to operate, low in cost, professional and practical, small in size and convenient to carry.
Drawings
Fig. 1 is a block diagram of a test system for automotive LIN bus data in accordance with the present invention;
fig. 2 and 3 are block diagrams of a test tool of a test system for automotive LIN bus data according to the present invention;
fig. 3 is a block diagram of a test tool of a test system for automotive LIN bus data of the present invention;
fig. 4 is a network topology block diagram of a test tool of a test system for automotive LIN bus data of the present invention;
fig. 5 is a circuit diagram of a USB data processing module of a test tool of a test system for automotive LIN bus data according to the present invention;
fig. 6 is a circuit diagram of a LIN data receiving module of a test tool of a test system for automotive LIN bus data of the present invention;
fig. 7 is a chip diagram of a USB data and LIN data conversion processing module of a testing tool of a testing system for automotive LIN bus data according to the present invention;
fig. 8 is a chip diagram of an inverter module of a test tool of a test system for automotive LIN bus data according to the present invention.
In the present application, pin 3-first pin, pin 4-second pin, pin 29-third pin, pin 32-fourth pin, pin 25-fifth pin, pin 16-sixth pin, pin 30-seventh pin, pin 6-eighth pin, pin 31-ninth pin, pin 0-tenth pin, pin 2-eleventh pin, pin 1-twelfth pin, pin 9-thirteenth pin, pin 7-fourteenth pin, pin 5-fifteenth pin; the resistor R14-a first resistor, the resistor R15-a second resistor, the resistor R4-a fourth resistor, the resistor R16-a third resistor and the resistor R-a fifth resistor; the capacitor C5-a first capacitor, the capacitor C10-a second capacitor and the capacitor C11-a third capacitor; fuse L2-first fuse; the chip U-fourth chip, the chip U1-first chip, the chip U2-second chip, the chip U3-third chip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the test system for the automobile LIN bus data is used for sending and receiving the automobile LIN bus data, the test system is connected with a controller system ECU of an automobile through an LIN bus, and comprises a PC-side upper computer 11 and a test tool 12, the test tool 12 is connected with the PC-side upper computer 11 through a USB data line, and the test tool 12 is connected with the controller system ECU of the automobile through the LIN bus; the analysis and processing of the corresponding data are realized by matching the test tool 12 with the corresponding test software on the PC end upper computer 11.
Referring to fig. 2 and 3, the test tool 12 includes:
the first transceiver module 123 is connected to the controller system ECU through the LIN bus, and is configured to communicate LIN bus data with the controller system ECU;
a conversion module 122, connected to the first transceiver module 123, for performing data conversion between the LIN bus data and the USB data;
the second transceiver module 121 is connected to the conversion module 122, connected to the PC-side upper computer 11 through the USB data line, and configured to communicate with the PC-side upper computer 11 through the USB data;
the PC-side upper computer 11 is configured to test the controller system ECU according to the USB data, and display a test result.
The controller system ECU further comprises a power supply module 124, wherein the power supply module 124 is connected with a power supply interface of the controller system ECU and used for supplying power to the controller system ECU. The power supply voltage output by the power supply module 124 is 12V, and can supply power to the controller system ECU with the working current not exceeding 100 mA.
The PC end upper computer 11 is a computer end, test software is installed in the PC end upper computer 11, and the PC end upper computer 11 is used for operating a software interface;
referring to fig. 4, the controller system ECU includes a plurality of vehicle controllers in different levels;
then the PC-side upper computer 11 further includes:
and the setting unit is used for issuing a setting instruction, and the test tool 12 converts the setting instruction into the LIN bus data and sends the LIN bus data to the controller system ECU so as to construct a plurality of vehicle controllers to form a controller node tree, thereby meeting the simulation test requirement of the controller system ECU.
The test system connects up to 16 of the vehicle controllers to form the controller node tree.
The test tool 12 is a box body, a USB interface, a voltage output end, an LIN interface and a ground wire interface are arranged outside the test tool, the USB interface is connected with the PC end upper computer 11, and the voltage output end, the LIN interface and the ground wire interface are connected with the ECU 13. The USB interface is a USB2.0 interface, supplies power to the testing tool 12 through a USB data line, and is also used for being connected with a PC end upper computer 11 provided with corresponding testing software to perform data exchange and communication. The voltage output end is a 12V power output interface; the LIN interface is an LIN bus communication interface and is used for performing data interaction communication and related function control on the ECU to be tested with the LIN bus protocol interface through an LIN signal bus.
In the present invention, the second transceiver module 121 is a USB data processing module 121, the first transceiver module 123 is an LIN data receiving module 123, the conversion module 122 is a USB data and LIN data conversion processing module 122, and further includes an inverter module 125 and a CPU124, the USB data processing module 121, the LIN data receiving module 123, the USB data and LIN data conversion processing module 122, the inverter module 125 and the CPU124 are electrically connected, the USB data processing module 121 and the USB data and LIN data conversion processing module 122 are electrically connected, and the LIN data receiving module 123 and the USB data and LIN data conversion processing module 122 are electrically connected.
The USB data processing module 121 is connected with the USB interface and is connected with a PC end upper computer through the USB interface, and the USB data processing module is used for receiving and sending data to realize the interactive communication and control functions of computer communication data and LIN bus data;
the LIN data receiving module 123 is connected with the LIN interface and receives data transmitted by the ECU through the LIN interface;
the USB data and LIN data conversion processing module 122 is configured to convert USB data and LIN data into each other, and receive and transmit data.
The ECU is an Electronic Control Unit, also called a traveling computer, a vehicle-mounted computer and the like, is a special microcomputer controller for an automobile in terms of application, and is composed of a microprocessor (CPU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (A/D), a shaping circuit, a driving circuit and other large-scale integrated circuits like a common computer.
An LIN interface is arranged outside the test tool 12 and used for communication, and the test system for the automobile LIN bus data comprises an LIN master node ECU and a plurality of LIN slave node ECUs which are connected with the LIN master node ECU. Because the physical connection transmission of the LIN bus protocol only needs one wire, only one LIN communication main node can be arranged in one LIN network topology structure network, and only one LIN bus interface is needed to be reserved by synthesizing the factors of practicability, portability, cost and the like of actual development and test.
Referring to fig. 5, in the USB data receiving module 121 of the testing tool 12, a fourth chip U is disposed in the USB data receiving module 121, the model of the chip U is USB3300, the fourth chip U includes a first capacitor C5 and a fourth resistor R4, a third pin 29 is electrically connected to the first capacitor C5, a first capacitor C5 is electrically connected to a ground terminal, the fourth pin 32 is electrically connected to the fourth resistor R4, the fourth resistor R4 is electrically connected to the ground terminal, a fifth pin 25, a sixth pin 16, a seventh pin 30, an eighth pin 6 and a ninth pin 31 are connected in parallel to a 3.3V voltage, a tenth pin 0, an eleventh pin 2 and a twelfth pin 1 are electrically connected to the ground terminal, and a thirteenth pin 9 is connected to a reset terminal.
Referring to fig. 6, a second chip U2 is disposed in the LIN data receiving module 123 of the test tool 12, the model of the second chip U2 is TLE72593, the first pin 3 is electrically connected to a first resistor R14, the first resistor R14 is electrically connected to a peak voltage terminal, and the peak voltage terminal is used for programming/erasing voltage;
the second pin 4 is electrically connected to the second resistor R15, the second resistor R15 is electrically connected to the data transmitting terminal, and the data transmitting terminal is used for transmitting data;
the twelfth pin 1 is electrically connected with the third resistor R16, the third resistor R16 is electrically connected with a data receiving terminal, the data receiving terminal is used for receiving data, the fifth resistor R is electrically connected between the twelfth pin 1 and the third resistor R16, and the fifth resistor R is electrically connected with a working voltage terminal;
the fourteenth pin 7 is electrically connected to the second capacitor C10, the second capacitor C10 is electrically connected to the ground, a second peak voltage terminal is electrically connected between the fourteenth pin 7 and the second capacitor C10, and the second peak voltage terminal is used for programming/erasing voltages; the fifteenth pin 5 is electrically connected to the ground terminal;
eighth pin 6 electric connection first fuse L2, electric connection third electric capacity C11 between eighth pin 6 and the first fuse L2, third electric capacity C11 electric connection earthing terminal, first fuse L2 electric connection car BUS end LIN BUS end, the junction electric property of first fuse L2 and LIN BUS end connects gradually 24V zener diode and 15V zener diode, 24V zener diode and 15V zener diode series connection, 15V zener diode electric connection earthing terminal.
Referring to fig. 7, the chip in the USB DATA to LIN DATA conversion processing module 122 is a first chip U1, and the first chip U1 has 20 pins including a pin VS, a pin RST, a pin VDD, a pin CLK, a pin USB _ DATA1, a pin USB _ XTP, a pin USB _ DIR, a pin USB _ STP, a pin USB _ CLK, a pin LRXD, a pin LTXD, a pin TMS, a pin GND, and 8 USB _ DATA pins. The pins USB _ XTP, USB _ DIR, USB _ STP, USB _ CLK and 8 USB _ DATA pins are used to connect the USB DATA processing module 121.
Referring to fig. 8, a third chip U3 is disposed in an inverter module in a test tool of a test system for automotive LIN bus data according to the present invention, and is used for converting a voltage of 5V into a voltage of 12V and outputting a direct current of 12V at a voltage output terminal of the test tool 12. Chip U3 has 8 pins, including pin VCC, pin OMP, pin GND, pin TCAP, pin IPK, pin IDC, pin ISWC, and pin ISWE. The inverter module is a power module for converting 5V into 12V, can provide power for the low-power ECU with the current of not more than 100mA, and does not need to carry extra power supply equipment. If the ECU with high power is a high-power ECU, such as the ECU with a high-power motor or an LED load, the ECU can be externally connected with a power supply, and when the ECU is used, only the LIN bus data test tool and the ECU to be tested need to share a GND ground wire.
The software interface diagram of the PC-side upper computer of the automobile LIN bus data testing system comprises a data analysis display module and a setting module, wherein the setting module is used for inputting setting parameters, and the data analysis display module is used for displaying LIN bus data and performing data analysis.
The testing tool 12 is provided with a corresponding PC end upper computer 11 and testing software, can perform configuration setting of communication baud rate, master-slave node attributes and the like of corresponding LIN network data, can display the state of bus communication data in real time, and performs visual analysis of normal messages and warning and reminding of abnormal conditions on the LIN bus data.
The invention relates to a test system of automobile LIN bus data, which carries out interactive control and test of LIN data on an ECU through an LIN bus data test tool 12, wherein a PC end upper computer 11 is used as a device for man-machine interaction and display, the LIN bus data test tool 12 and ECU nodes form a complete LIN bus communication network through the setting of the PC end upper computer 11 to carry out virtual simulation and semi-physical simulation tests, and the LIN bus data test tool 12 and the ECU nodes can be respectively used as an LIN main node and an LIN slave node under the condition of meeting the LIN network topology principle. The total number of nodes (including all slave nodes of the master node) cannot exceed 16.
The ECU is connected with an LIN bus data testing tool 12 through an LIN bus, and is transmitted into the USB data and LIN data conversion processing module 122 through the LIN data receiving module 123 to convert LIN data into USB data, and then the data is transmitted into a computer of the PC end upper computer 11 through a USB data line connected with the USB data processing module 121, the computer interactively controls the upper computer to analyze the data through the PC, and the final data is stored or displayed on a computer screen of the PC end upper computer 11, so that the communication from the ECU to the LIN bus data testing tool and the display flow on the computer are completed; the same procedure is used for communication from the LIN bus data test tool 12 to the ECU and display on the computer, but the directions are interchanged. Together, these two processes are the workflow of the data communication test of the entire LIN bus data test tool 12.
As a variation, the test tool 12 of the test system for the automotive LIN bus data of the present invention may be provided with a test software installation package, and connected to any PC-side upper computer 11 through a USB interface, and the test software installation package in the test tool 12 is copied and pasted to the PC-side upper computer 11 for installation, and the PC-side upper computer 11 may be a portable and replaceable computer device such as a notebook computer or a tablet computer, so that the LIN bus data test work is more convenient.
In an automotive electronic product, software debugging, function calibration, modification and program updating are indispensable parts, and sometimes a vehicle-mounted product may also perform program updating. The testing tool 12 can provide power for the low-power ECU controller to be tested and the program burning device, and does not need to additionally carry relatively heavy power supply equipment.
Compared with the prior art, the test system for the automobile LIN bus data is simple to operate, low in cost, professional and practical, small in size and convenient to carry.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A test system of car LIN bus data, characterized by: the testing system is connected with a controller system of the automobile through an LIN bus and comprises a PC end upper computer and a testing tool, the testing tool is connected with the PC end upper computer through a USB data line, and the testing tool is connected with the controller system of the automobile through the LIN bus;
the test tool comprises:
the first transceiver module is connected with the controller system through the LIN bus and is used for communicating LIN bus data with the controller system;
the conversion module is connected with the first transceiver module and is used for carrying out data conversion between the LIN bus data and the USB data;
the second transceiver module is connected with the conversion module, is connected with the PC end upper computer through the USB data line and is used for carrying out USB data communication with the PC end upper computer;
and the PC side upper computer is used for testing the controller system according to the USB data and displaying a test result.
2. A test system as claimed in claim 1, characterized in that: the first transceiver module specifically includes: the test tool is characterized in that an LIN interface is arranged outside the test tool and used for communication, and the test system for the automobile LIN bus data comprises an LIN master node ECU and a plurality of LIN slave node ECUs which are connected with the LIN master node ECU.
3. A test system as claimed in claim 2, characterized in that: the conversion module specifically comprises: the second transceiver module is internally provided with a fourth chip, the fourth chip comprises a first capacitor and a fourth resistor, a third pin is electrically connected with the first capacitor, the first capacitor is electrically connected with a grounding terminal, the fourth pin is electrically connected with the fourth resistor, the fourth resistor is electrically connected with the grounding terminal, a fifth pin, a sixth pin, a seventh pin, an eighth pin and a ninth pin are connected with a 3.3V voltage in parallel, a tenth pin, an eleventh pin and a twelfth pin are electrically connected with the grounding terminal, and a thirteenth pin is connected with a reset terminal.
4. A test system as claimed in claim 1, characterized in that: the second transceiver module is a USB data processing module, the first transceiver module is an LIN data receiving module, the conversion module is a USB data and LIN data conversion processing module, the second transceiver module further comprises an inverter module and a CPU, the USB data processing module, the LIN data receiving module, the USB data and LIN data conversion processing module, the inverter module and the CPU are electrically connected, the USB data processing module and the USB data and LIN data conversion processing module are electrically connected, and the LIN data receiving module and the USB data and LIN data conversion processing module are electrically connected.
5. A test system as claimed in claim 4, characterized in that: the controller system further comprises a power supply module, wherein the power supply module is connected with a power supply interface of the controller system and used for supplying power to the controller system.
6. A test system as claimed in claim 5, wherein: the power supply module specifically comprises: the first transceiver module specifically includes: a second chip is arranged in the first transceiver module, a first pin of the second chip is electrically connected with a first resistor, the first resistor is electrically connected with a peak voltage end, and the peak voltage end is used for programming/erasing voltage;
the second pin is electrically connected with a second resistor, the second resistor is electrically connected with a data sending end, and the data sending end is used for sending data;
the twelfth pin of the second chip is electrically connected with a third resistor, the third resistor is electrically connected with a data receiving end, the data receiving end is used for receiving data, a fifth resistor is electrically connected between the twelfth pin and the third resistor, and the fifth resistor is electrically connected with a working voltage end;
the fourteenth pin is electrically connected with the second capacitor, the second capacitor is electrically connected with the ground terminal, a second peak voltage end is electrically connected between the fourteenth pin and the second capacitor, and the second peak voltage end is used for programming/erasing voltage; the fifteenth pin is electrically connected with the grounding end;
the eighth pin is electrically connected with the first fuse, the third capacitor is electrically connected between the eighth pin and the first fuse, the third capacitor is electrically connected with the grounding end, the first fuse is electrically connected with the automobile BUS end LINBUS end, the connection part of the first fuse and the LINBUS end is electrically connected with the 24V voltage stabilizing diode and the 15V voltage stabilizing diode in sequence, the 24V voltage stabilizing diode and the 15V voltage stabilizing diode are connected in series, and the 15V voltage stabilizing diode is electrically connected with the grounding end.
7. A test system as claimed in claim 5, wherein: the power supply voltage output by the power supply module is 12V, and the power supply module can supply power to the controller system with the working current not exceeding 100 mA.
8. A test system as claimed in claim 1, characterized in that: the controller system comprises a plurality of vehicle controllers at different levels;
then PC end host computer still includes:
and the setting unit is used for issuing a setting instruction, and the testing tool converts the setting instruction into the LIN bus data and sends the LIN bus data to the controller system so as to construct a plurality of vehicle controllers into a controller node tree, thereby meeting the simulation test requirement of the controller system.
9. A test system as claimed in claim 8, wherein: the test system connects up to 16 of the vehicle controllers to form the controller node tree.
10. The system for testing automotive LIN bus data as claimed in claim 5, wherein: and a test software installation package is arranged in the test tool, is connected with any PC end upper computer through a USB interface, and copies and pastes the test software installation package in the test tool to any PC end upper computer for installation.
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| CN202110019449.2A CN112804120A (en) | 2021-01-07 | 2021-01-07 | Test system for automobile LIN bus data |
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| CN202110019449.2A CN112804120A (en) | 2021-01-07 | 2021-01-07 | Test system for automobile LIN bus data |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113595817A (en) * | 2021-07-19 | 2021-11-02 | 上汽通用五菱汽车股份有限公司 | LIN communication fault injection method, system and storage medium |
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