CN222801037U - A cockpit system functional safety fault injection test system - Google Patents
A cockpit system functional safety fault injection test system Download PDFInfo
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- CN222801037U CN222801037U CN202421382517.7U CN202421382517U CN222801037U CN 222801037 U CN222801037 U CN 222801037U CN 202421382517 U CN202421382517 U CN 202421382517U CN 222801037 U CN222801037 U CN 222801037U
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Abstract
The utility model relates to the technical field of automobile electronic testing, and provides a cabin system functional safety fault injection testing system which comprises a device to be tested and a control module which are connected, wherein an analog fault reporting interface and an analog fault communication interface are arranged between the device to be tested and the control module, the analog fault reporting interface is used for being connected with an external power supply for outputting a high-level signal or a low-level signal, and the analog fault communication interface is used for being in communication connection with external analog communication equipment. After receiving the high-level signal or the low-level signal input from the analog fault reporting interface, the control module triggers the operation and performs fault information interaction with the analog communication equipment through the analog fault communication interface. The control module triggers the reading of fault information according to the fault interrupt notification received by the control module, and further confirms the fault reason according to the read simulated fault information, so as to realize the fault injection test of the functional safety fault detection mechanism of the device to be tested of the cabin system.
Description
Technical Field
The utility model relates to the technical field of automobile electronic testing, in particular to a cabin system functional safety fault injection testing system.
Background
With the development of industry, automobile cabin systems are gradually required to meet the functional safety requirements of ASIL B at the highest, and in the process of functional safety development, verification activities are important processes for ensuring that safety requirements and mechanisms are correctly and completely realized. The test verification method of the functional safety mechanism mainly adopts fault injection test, and the fault injection test needs to inject expected faults into the running tested system to check whether the behavior of the system accords with the expected design. How to accurately inject some expected failure into a peripheral IC related to functional safety in a system without introducing other types of safety failures is the key to the failure injection test.
At present, a program-controlled wiring board card is proposed to receive signal message instructions such as CAN message instructions and the like, analyze the signal message instructions, and control a relay module connected with a tested interface and a peripheral interface according to analysis results by a control module to realize automatic configuration fault injection. The external interface is used for connecting the CAN/LIN interface of the detection communication instrument and the power line, the tested interface is used for connecting the CAN/LIN wiring harness of the tested electronic controller and the power line, obviously, the equipment is only used for realizing fault injection of the communication line, the problem of poor universality exists, and single fault controllability also needs to be considered.
Disclosure of utility model
The utility model provides a cabin system function safety fault injection test system, which aims to overcome the defects of poor universality and single fault controllability of the fault injection test means in the prior art.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
A cabin system function safety fault injection test system comprises a device to be tested and a control module which are connected, wherein a simulation fault reporting interface and a simulation fault communication interface are arranged between the device to be tested and the control module, the simulation fault reporting interface is used for being connected with an external power supply outputting a high-level signal or a low-level signal, and the simulation fault communication interface is used for being in communication connection with external simulation communication equipment. After receiving the high-level signal or the low-level signal input from the analog fault reporting interface, the control module triggers the operation and performs fault information interaction with the analog communication equipment through the analog fault communication interface.
According to the technical scheme, a simulated fault reporting interface and a simulated fault communication interface are additionally arranged between a device to be tested and a control module, wherein the simulated fault reporting interface is used for being connected with an external power supply, inputting a high-level signal or a low-level signal through the external power supply and simulating fault interrupt notification of the device to be tested, and the simulated fault communication interface is used for being in communication connection with external simulated communication equipment and simulating fault information sending states of the device to be tested through communication connection between the external simulated communication equipment and the control module. The control module triggers the reading of fault information according to the fault interrupt notification received by the control module, and further confirms the fault reason according to the read simulated fault information, so as to realize the fault injection test of the functional safety fault detection mechanism of the device to be tested of the cabin system.
The external power supply comprises a voltage-adjustable direct current power supply, wherein the positive electrode of the external power supply is connected with the simulated fault reporting interface, and the negative electrode of the external power supply is grounded.
Preferably, the external power supply comprises a GPR3060D direct current stabilized power supply.
Preferably, the simulated fault communication interface includes one of an I2C serial port, a UART serial port, or an SPI serial port.
Preferably, the external analog communication device is configured with a first communication unit for data interaction with the terminal.
Preferably, the first communication unit includes one of a USB chip, a bluetooth chip, or a 4G chip.
Preferably, the control module is configured with a second communication unit for data interaction with the terminal.
Preferably, the second communication unit comprises a CAN transceiver or a LIN bus chip.
The method is characterized in that a first switch is arranged between the simulated fault reporting interface and the device to be tested, and a second switch is arranged between the simulated fault communication interface and the device to be tested.
The control module is characterized in that a first relay is arranged between the simulated fault reporting interface and the device to be tested, a second relay is arranged between the simulated fault communication interface and the device to be tested, and the output end of the control module is connected with the input ends of the first relay and the second relay respectively.
Compared with the prior art, the technical scheme of the utility model has the beneficial effects that:
According to the utility model, a simulated fault reporting interface and a simulated fault communication interface are arranged between a device to be tested and a control module, a fault interrupt notification of the device to be tested is simulated by matching with an external power supply to input a high-level signal or a low-level signal, and a fault information sending state of the device to be tested is simulated by matching with external simulated communication equipment;
According to the utility model, the connection with the external equipment is realized by arranging the simulated fault reporting interface and the simulated fault communication interface, so that the cabin system to be tested can be prevented from being led into other unexpected simulated faults, and the cabin system to be tested has higher reliability and controllability.
Drawings
Fig. 1 is a configuration diagram of a cabin system functional safety failure injection test system of embodiment 1.
Fig. 2 is a configuration diagram of a cabin system functional safety failure injection test system of embodiment 2.
Fig. 3 is a construction diagram of a cabin system functional safety failure injection test system of embodiment 3.
Fig. 4 is a construction diagram of a cabin system functional safety failure injection test system of embodiment 4.
The device to be tested 1-comprises a device to be tested 2-comprises a control module, a 3-simulation fault reporting interface, a 4-simulation fault communication interface, a 5-external power supply and 6-simulation communication equipment.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the application;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a cabin system functional safety fault injection test system, as shown in fig. 1, which is a framework diagram of the cabin system functional safety fault injection test system of the embodiment.
The cabin system function safety fault injection test system comprises a device to be tested 1 and a control module 2 which are connected, wherein a simulated fault reporting interface 3 and a simulated fault communication interface 4 are arranged between the device to be tested 1 and the control module 2, the simulated fault reporting interface 3 is used for being connected with an external power supply 5 outputting a high-level signal or a low-level signal, the simulated fault communication interface 4 is used for being in communication connection with external simulated communication equipment 6, and the control module 2 triggers the control module 2 to work and performs fault information interaction with the simulated communication equipment 6 through the simulated fault communication interface 4 after receiving the high-level signal or the low-level signal input from the simulated fault reporting interface 3.
In this embodiment, the device under test 1 is a peripheral IC under test of a cabin system.
In this embodiment, a first end of the control module 2 is connected to a fault reporting pin of the device under test 1, and is used for reading a level state of the fault reporting pin of the device under test 1, and a second end of the control module 2 is connected to the device under test 1 in a communication manner, and is used for reading fault information output by the device under test 1.
The simulated fault reporting interface 3 provided in this embodiment is configured to be connected to the external power supply 5, and input a high level signal or a low level signal through the external power supply 5, so as to simulate fault interrupt notification of the device 1 to be tested.
The simulated fault communication interface 4 provided in this embodiment is used for being in communication connection with the external simulated communication device 6, and simulates the fault information sending state of the device 1to be tested through the communication connection between the external simulated communication device 6 and the control module 2.
As an exemplary illustration, the external analog communication apparatus 6 in the present embodiment is configured with the same communication address, communication rate, and/or communication protocol as those of the device under test 1 to simulate the communication between the device under test 1 and the control module 2 instead.
The working process of the system in the embodiment is that after the system is powered on, the state of the system is observed, and the whole system is determined to have no other faults and to be in a normal working state. And connecting an analog communication device 6 to the analog fault communication interface 4, wherein the analog communication device 6 is configured with the same communication parameters as the device 1 to be tested to simulate the communication between the device 1 to be tested and the control module 2 instead, and pre-storing a data set to be transmitted in the analog communication device 6, wherein the data set contains fault information which possibly violates a safety target. Meanwhile, an external power supply 5 is connected to the simulated fault reporting interface 3, and a high-level signal or a low-level signal is input to maintain a simulated fault-free output state.
When the safety fault injection test is executed, the simulation fault reporting interface 3 is accessed through the external power supply 5, and a low-level signal or a high-level signal is input to simulate and output fault interrupt notification. After receiving the fault interrupt notification, the control module 2 triggers the reading of fault information, reads the data set sent by the analog communication device 6, further confirms the fault reason according to the read analog fault information, and realizes the fault injection test of the functional safety fault detection mechanism of the cabin system device 1 to be tested.
In this embodiment, the control module 2 triggers the reading of the fault information according to the fault interrupt notification received by the control module, and further confirms the fault reason according to the read simulated fault information, so as to implement the fault injection test of the functional safety fault detection mechanism of the device 1 to be tested in the cabin system. In addition, the configuration is carried out on the data set to be sent in the analog communication device 6 according to the type of the functional safety fault to be detected, so that the system has universality, and the connection with the external device is realized by arranging the analog fault reporting interface 3 and the analog fault communication interface 4, so that the cabin system to be detected can be ensured not to be led into other unexpected analog faults, and the system has higher reliability and controllability.
In an alternative embodiment, the external power supply 5 includes a voltage-adjustable dc power supply, the positive electrode of the external power supply 5 is connected to the analog fault reporting interface 3, and the negative electrode of the external power supply 5 is grounded.
Further alternatively, the external power supply 5 is a GPR3060D dc regulated power supply.
In this embodiment, an adjustable voltage dc power supply is selected to be connected to the simulated fault reporting interface 3, where the adjustable voltage dc power supply has a characteristic that the voltage can be adjusted to a value within an allowable range of any device performance, and by using this characteristic, the output voltage can be manually controlled, so as to control the simulated fault reporting state.
As an exemplary illustration, assuming that the fault reporting pin of the device under test 1 is in a low level state when there is a fault output, in the system installation initialization process, the voltage-adjustable dc power supply is connected to the analog fault reporting interface 3 and inputs a high level signal to maintain an analog fault-free output state, and when a safety fault injection test needs to be executed, the voltage-adjustable dc power supply is directly adjusted to output a low level signal to simulate output of a fault interrupt notification.
In another alternative embodiment, the simulated fault communication interface 4 includes one of an I2C serial port, a UART serial port, or an SPI serial port. The control module 2 accesses the fault state of the device under test 1 through the I2C, UART or SPI link to determine the specific cause of the fault, and determines whether the fault is related to safety.
Example 2
The present embodiment is an improvement on the cabin system functional safety fault injection test system proposed in embodiment 1. As shown in fig. 2, an architecture diagram of the cabin system functional safety fault injection test system of the present embodiment is shown.
The cabin system function safety fault injection test system comprises a device to be tested 1 and a control module 2 which are connected, wherein a simulated fault reporting interface 3 and a simulated fault communication interface 4 are arranged between the device to be tested 1 and the control module 2, the simulated fault reporting interface 3 is used for being connected with an external power supply 5 outputting a high-level signal or a low-level signal, the simulated fault communication interface 4 is used for being in communication connection with external simulated communication equipment 6, and after the control module 2 receives the high-level signal input from the simulated fault reporting interface 3, the control module 2 performs fault information interaction with the simulated communication equipment 6 through the simulated fault communication interface 4.
In this embodiment, the device under test 1 is a peripheral IC under test of a cabin system.
In this embodiment, a first end of the control module 2 is connected to a fault reporting pin of the device under test 1, and is used for reading a level state of the fault reporting pin of the device under test 1, and a second end of the control module 2 is connected to the device under test 1 in a communication manner, and is used for reading fault information output by the device under test 1.
Further, the external analog communication device 6 is configured with a first communication unit for data interaction with the terminal PC 1.
The analog communication device 6 in the present embodiment performs data interaction with the terminal PC1 through the first communication unit to complete the configuration of the communication address, the communication rate, and/or the communication protocol, and stores a data group to be transmitted containing one kind of failure information that may violate the security target in the analog communication device 6.
Further optionally, the first communication unit includes one of a USB chip, a bluetooth chip, or a 4G chip. The analog communication device 6 optionally performs data interaction with the terminal PC1 via a USB connection, a bluetooth connection and a 4G wireless network connection.
In a further alternative embodiment, the control module 2 is provided with a second communication unit for data interaction with the terminal PC 2.
After receiving the fault interrupt notification, the control module 2 in this embodiment triggers the reading of the fault information, obtains the simulated fault information sent by the simulated communication device 6, further confirms the fault reason according to the read simulated fault information, generates a message, and sends the message to the terminal PC2 through the second communication unit. The staff can check the actual execution action of the message monitoring system through the terminal PC2, so as to judge whether the safety state is entered or not, and whether the safety state meets the design of the expected requirement or not.
Further optionally, the second communication unit includes a CAN transceiver or a LIN bus chip.
Example 3
This embodiment is an improvement over the cabin system functional safety fault injection test system set forth in embodiments 1 or 2. As shown in fig. 3, an architecture diagram of the cabin system functional safety fault injection test system of the present embodiment is shown.
The cabin system function safety fault injection test system comprises a device to be tested 1 and a control module 2 which are connected, wherein a simulated fault reporting interface 3 and a simulated fault communication interface 4 are arranged between the device to be tested 1 and the control module 2, the simulated fault reporting interface 3 is used for being connected with an external power supply 5 outputting a high-level signal or a low-level signal, the simulated fault communication interface 4 is used for being in communication connection with external simulated communication equipment 6, and after the control module 2 receives the high-level signal input from the simulated fault reporting interface 3, the control module 2 performs fault information interaction with the simulated communication equipment 6 through the simulated fault communication interface 4.
In this embodiment, the device under test 1 is a peripheral IC under test of a cabin system.
In this embodiment, a first end of the control module 2 is connected to a fault reporting pin of the device under test 1, and is used for reading a level state of the fault reporting pin of the device under test 1, and a second end of the control module 2 is connected to the device under test 1 in a communication manner, and is used for reading fault information output by the device under test 1.
Further, a first switch S1 is arranged between the simulated fault reporting interface 3 and the device under test 1, and a second switch S2 is arranged between the simulated fault communication interface 4 and the device under test 1.
As an exemplary illustration, the first switch S1 is disposed on a connection line between the first end of the control module 2 and the failure reporting pin of the device under test 1, and the second switch S2 is disposed on a communication link between the second end of the control module 2 and the device under test 1.
The working process of the system in the embodiment is that after the system is powered on, the state of the system is observed, and the whole system is determined to have no other faults and to be in a normal working state. At this time, the device 1 to be tested and the control module 2 are in a connected state, and the first switch S1 arranged between the simulated fault reporting interface 3 and the device 1 to be tested is in a closed state, and the second switch S2 arranged between the simulated fault communication interface 4 and the device 1 to be tested is in a closed state.
And connecting an analog communication device 6 to the analog fault communication interface 4, wherein the analog communication device 6 is configured with the same communication parameters as the device 1 to be tested to simulate the communication between the device 1 to be tested and the control module 2 instead, and pre-storing a data set to be transmitted in the analog communication device 6, wherein the data set contains fault information which possibly violates a safety target. Meanwhile, an external power supply 5 is connected to the simulated fault reporting interface 3, and a high-level signal or a low-level signal is input to maintain a simulated fault-free output state.
When the safety fault injection test is executed, the first switch S1 and the second switch S2 are disconnected firstly, at this time, the control module 2 is disconnected with the device 1 to be tested, meanwhile, the external power supply 5 continuously inputs a high-level signal or a low-level signal through the simulation fault reporting interface 3 to maintain a simulation fault-free output state, namely, the state of a fault reporting pin of the device 1 to be tested in fault-free output is kept consistent, the system is still in a normal working state, and it is ensured that two external devices for simulating fault injection are fused with the whole system and other unexpected faults which can affect the operation of the system are not introduced. Further, the external power supply 5 is connected to the analog fault reporting interface 3, and a low-level signal or a high-level signal is input to simulate and output fault interrupt notification. After receiving the fault interrupt notification, the control module 2 triggers the reading of fault information, reads the data set sent by the analog communication device 6, further confirms the fault reason according to the read analog fault information, and realizes the fault injection test of the functional safety fault detection mechanism of the cabin system device 1 to be tested.
Example 4
This embodiment is an improvement over the cabin system functional safety fault injection test system set forth in embodiments 1 or 2. As shown in fig. 4, an architecture diagram of the cabin system functional safety fault injection test system of the present embodiment is shown.
The cabin system function safety fault injection test system comprises a device to be tested 1 and a control module 2 which are connected, wherein a simulated fault reporting interface 3 and a simulated fault communication interface 4 are arranged between the device to be tested 1 and the control module 2, the simulated fault reporting interface 3 is used for being connected with an external power supply 5 outputting a high-level signal or a low-level signal, the simulated fault communication interface 4 is used for being in communication connection with external simulated communication equipment 6, and after the control module 2 receives the high-level signal input from the simulated fault reporting interface 3, the control module 2 performs fault information interaction with the simulated communication equipment 6 through the simulated fault communication interface 4.
In this embodiment, the device under test 1 is a peripheral IC under test of a cabin system.
In this embodiment, a first end of the control module 2 is connected to a fault reporting pin of the device under test 1, and is used for reading a level state of the fault reporting pin of the device under test 1, and a second end of the control module 2 is connected to the device under test 1 in a communication manner, and is used for reading fault information output by the device under test 1.
Further, in this embodiment, a first relay K1 is disposed between the simulated fault reporting interface 3 and the device under test 1, a second relay K2 is disposed between the simulated fault communication interface 4 and the device under test 1, and output ends of the control module 2 are connected to input ends of the first relay K1 and the second relay K2, respectively.
As an exemplary illustration, the first relay K1 is disposed on a connection line between the first end of the control module 2 and the failure reporting pin of the device under test 1, and the second relay K2 is disposed on a communication link between the second end of the control module 2 and the device under test 1.
As an exemplary illustration, the control module 2 comprises an MCU (Microcontroller Unit ). Further, the output end of the control module 2 is connected with a digital-to-analog conversion module or a power amplification module, and the control signal output by the control module 2 is transmitted to the input ends of the first relay K1 and the second relay K2 after passing through the digital-to-analog conversion module or the power amplification module.
The working process of the system in the embodiment is that after the system is powered on, the state of the system is observed, and the whole system is determined to have no other faults and to be in a normal working state. At this time, the control module 2 outputs control signals to the first relay K1 and the second relay K2, and the device 1 to be tested is connected to the control module 2.
And connecting an analog communication device 6 to the analog fault communication interface 4, wherein the analog communication device 6 is configured with the same communication parameters as the device 1 to be tested to simulate the communication between the device 1 to be tested and the control module 2 instead, and pre-storing a data set to be transmitted in the analog communication device 6, wherein the data set contains fault information which possibly violates a safety target. Meanwhile, an external power supply 5 is connected to the simulated fault reporting interface 3, and a high-level signal or a low-level signal is input to maintain a simulated fault-free output state.
When the safety fault injection test is executed, the control module 2 stops outputting control signals to the first relay K1 and the second relay K2, the first relay K1 and the second relay K2 are disconnected, at this time, the control module 2 is disconnected with the device 1 to be tested, and meanwhile, the external power supply 5 continuously inputs a high-level signal or a low-level signal through the simulated fault reporting interface 3 to maintain a simulated fault-free output state, namely, maintain the same state as the fault reporting pin of the device 1 to be tested in the fault-free output, the system is still in a normal working state, and it is ensured that two external devices for simulating fault injection are fused with the whole system and other unexpected faults which can affect the operation of the system are not introduced.
Further, the external power supply 5 is connected to the analog fault reporting interface 3, and a low-level signal or a high-level signal is input to simulate and output fault interrupt notification. After receiving the fault interrupt notification, the control module 2 triggers the reading of fault information, reads the data set sent by the analog communication device 6, further confirms the fault reason according to the read analog fault information, and realizes the fault injection test of the functional safety fault detection mechanism of the cabin system device 1 to be tested.
The same or similar reference numerals correspond to the same or similar components;
The terms describing the positional relationship in the drawings are merely illustrative, and are not to be construed as limiting the application;
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202421382517.7U CN222801037U (en) | 2024-06-17 | 2024-06-17 | A cockpit system functional safety fault injection test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202421382517.7U CN222801037U (en) | 2024-06-17 | 2024-06-17 | A cockpit system functional safety fault injection test system |
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| CN222801037U true CN222801037U (en) | 2025-04-25 |
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| CN202421382517.7U Active CN222801037U (en) | 2024-06-17 | 2024-06-17 | A cockpit system functional safety fault injection test system |
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