Manual and automatic fault injection box of automobile chassis electric control system

Abstract

The invention discloses a manual and automatic fault injection box of an automobile chassis electric control system, and relates to the technical field of automobile testing. The computer case comprises a case body, a case panel is arranged on one side of the case body, supporting mechanisms are arranged on the two sides of the case body, each supporting mechanism comprises a first rotating rod, one end of each first rotating rod is rotationally connected with a first rotating wheel, and a second rotating rod is arranged below each first rotating rod; through the arrangement of the supporting mechanism, after the case is completely drawn out, a second rotating rod automatically rotates under the action of a torsion spring and is limited by a check block to form stable rear support, a clamping block is pulled upwards to be separated from a clamping groove, a first rotating rod also rotates along with the clamping block to form front support, the stability of the case in the using process is ensured, and the using effect of the case is improved. And therefore, the stability and the safety of the case in the moving process are ensured, the movement of the case is more convenient, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile testing, in particular to a manual-automatic fault injection box for an automobile chassis electronic control system. Background Art

[0002] The performance of the automotive chassis electronic control system is the key to vehicle safety and electrification. The performance test of the chassis electronic control system is essential in the development of automotive intelligence. When conducting simulation tests, it is necessary to provide the samples with a simulation environment that simulates the samples on the vehicle, so that the corresponding performance tests can be achieved.

[0003] The simulation environment required for the automobile chassis electronic control system test includes powering on the sample, providing a CAN bus environment for signal interaction with the sample, simulating the EPB electronic caliper, controlling the switch signal of the sample and the on and off of the signal light, etc. These functions are connected to the corresponding PIN pins of the sample under test through a standardized chassis. When fault injection is performed, the on and off of the line is realized through a homemade multi-channel relay board. The large relay board is installed inside the fault injection box, and the hard wires led out of the channels of the relay board are integrated into the EDAC connector on the panel of the fault injection box.

[0004] The existing manual and automatic fault injection boxes of automobile chassis electronic control systems are generally placed in test cabinets and connected to other standardized chassis to achieve signal transmission. When testing the chassis electronic control system, it is necessary to provide power supply and CAN bus simulation environment for the tested device. When performing fault injection, it is necessary to disconnect the hard wire connection of the corresponding PIN pin and connect the circuit to the device. However, when the tested vehicles are placed in a scattered manner, due to the limitation of the length of the wires, it is necessary to move the entire test cabinet, which is inconvenient. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a manual-automatic fault injection box for an automobile chassis electronic control system to solve the technical problem that when vehicles are placed in a scattered manner, the entire test cabinet needs to be moved due to the limitation of the length of the wires.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a manual-automatic fault injection box for an automobile chassis electronic control system, comprising a chassis body, a chassis panel is arranged on one side of the chassis body, support mechanisms are arranged on both sides of the chassis body, the support mechanisms comprise a first rotating rod, one end of the first rotating rod is rotatably connected to a first rotating wheel, a second rotating rod is arranged below the first rotating rod, a second rotating wheel is arranged on one side of the second rotating rod, and a stopper is arranged on one side of the second rotating rod.

[0007] By adopting the above technical solution, the design of the manual and automatic fault injection box of the automobile chassis electronic control system provides a convenient movement and support mechanism. The first rotating rod and the second rotating rod in the support mechanism and the corresponding first rotating wheel and the second rotating wheel enable the chassis to be easily pulled out and pushed into the test cabinet and can be moved to a suitable position, thereby improving the convenience of use.

[0008] Furthermore, a slot is provided on the first rotating rod, and a block is engaged inside the slot.

[0009] By adopting the above technical solution, by opening a slot on the first rotating rod and engaging a block inside the slot, additional stability and fixity are provided for the supporting mechanism of the chassis. The slot and the block enable the first rotating rod to be firmly locked in the required position to prevent it from accidental movement or rotation.

[0010] Furthermore, the material of the card block is rubber, and the card block is fixedly connected to the chassis body.

[0011] By adopting the above technical solution and selecting rubber as the material of the card block, the card structure provides good elasticity and wear resistance. The rubber card block can better adapt to the shape of the card slot, ensuring the tightness and stability of the card engagement, while enabling quick unlocking when unlocking is required.

[0012] Furthermore, the first rotating rod and the second rotating rod are both rotatably connected to the chassis body via a torsion shaft.

[0013] By adopting the above technical solution, the first rotating rod and the second rotating rod are rotatably connected to the chassis body through the torsion shaft, so that the rotating rod can be pushed by the torsion rotation when needed to achieve automatic opening, which is convenient for supporting the chassis.

[0014] Furthermore, a multi-channel relay board is arranged in the middle of the interior of the chassis body to realize the fault injection function for the sample and can be used to control the on and off of the hard-wire path.

[0015] By adopting the above technical solution and setting a multi-channel relay board in the middle of the chassis, a powerful fault injection function is provided for the sample. The relay board can accurately control the on and off of the hard-wired path, thereby simulating various possible fault conditions and providing comprehensive support for the testing of the automotive chassis electronic control system.

[0016] Furthermore, the relay board can control the on / off of the corresponding channel through the CAN message sent by the host computer software, thereby realizing automatic fault injection.

[0017] By adopting the above technical solution, by allowing the host computer software to control the on and off of the corresponding channel of the relay board through CAN messages, the automatic control not only reduces the complexity and error rate of manual operation, but also makes the test process more efficient and accurate.

[0018] Furthermore, the relay board can be used to implement on-off fault injection and high-pull-ground fault injection for PINs that require fault injection in the sample.

[0019] By adopting the above technical solution, the relay board can realize on-off fault injection for the PIN that needs fault injection in the sample. It can simulate the open circuit or short circuit in the circuit by controlling the opening and closing of the relay, which helps engineers understand and improve the stability and reliability of the system under abnormal conditions.

[0020] Furthermore, the chassis panel is provided with panel connectors, and the panel connectors include an EDAC input connector, an EDAC output connector, an interface, a fault injection type indicator light, and a power indicator light.

[0021] By adopting the above technical solution, by setting panel connectors on the chassis panel, including EDAC input connectors, EDAC output connectors, interfaces, fault injection type indicator lights and power indicator lights, the connectivity and ease of use of the equipment are enhanced. The EDAC input connectors and EDAC output connectors enable the equipment to be easily connected to samples and standardized chassis, thereby quickly building a test system.

[0022] Furthermore, the fault injection type indicator light may be used to indicate whether there is currently a fault injection and what type of fault injection it is.

[0023] By adopting the above technical solution, the fault injection type indicator light can clearly indicate whether fault injection is currently in progress, providing an intuitive judgment basis for testers, allowing them to quickly understand the test status of the system without having to refer to complex test data or reports.

[0024] Furthermore, the support mechanisms are provided in two groups, and the two groups of support mechanisms are provided in a mirror image structure.

[0025] By adopting the above technical solution, by setting up two sets of support mechanisms with a mirror structure, the stability and supporting force of the manual automatic fault injection box of the automobile chassis electronic control system are enhanced. The two sets of support mechanisms can provide balanced support from different positions, effectively preventing the chassis from tilting or shaking during use.

[0026] In summary, the present invention mainly has the following beneficial effects:

[0027] 1. The present invention provides a support mechanism. When the injection box needs to be taken out, the first rotating rod and the second rotating rod in the support mechanism can be flexibly rotated, and the action of the rotating wheel makes the chassis easily drawn out from the test cabinet, thereby improving the convenience of operation. When the chassis is completely drawn out, the second rotating rod automatically rotates under the action of the torsion spring and is restricted by the block to form a stable rear support. By pulling the card block upward, the card block is disengaged from the card slot, and the first rotating rod also rotates accordingly to form a front support, thereby ensuring the stability of the chassis during use, and then ensuring the stability and safety of the chassis during movement, making the movement of the chassis more convenient and improving work efficiency.

[0028] 2. The present invention can provide fault injection for automobile chassis electronic control system testing by setting relay boards and panel connectors. For the hard-wired connections of PINs such as switch signals, signal lights, wheel speeds, and CAN channels of the sample, a fault injection box is added between the sample and the standardized chassis. The CAN signal is sent through the upper computer software to control the on and off of the relay board, thereby controlling the on and off of the hard wire. The module is integrated into a standardized chassis and connected to other parts of the test system and the sample through the connectors on the chassis panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the cross-section structure of the chassis body of the present invention;

[0031] Figure 3 It is a partially cutaway enlarged structural schematic diagram of the support mechanism of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the chassis panel design of the present invention.

[0033] In the figure: 1. chassis body; 2. chassis panel; 3. support mechanism; 301. first rotating rod; 302. first rotating wheel; 303. second rotating rod; 304. second rotating wheel; 305. stopper; 306. card block; 307. card slot; 4. relay board; 6. panel connector; 601. EDAC input connector; 602. EDAC output connector; 603. interface; 604. fault injection type indicator light; 605. power indicator light. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms “first”, “second” and “third” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following describes an embodiment of the present invention based on its overall structure.

[0038] A manual automatic fault injection box for an automobile chassis electronic control system, such as Figure 1-Figure 4 As shown, the chassis body 1 includes a chassis panel 2 disposed on one side of the chassis body 1, support mechanisms 3 are disposed on both sides of the chassis body 1, and the support mechanisms 3 include a first rotating rod 301, one end of the first rotating rod 301 is rotatably connected to a first rotating wheel 302, a second rotating rod 303 is disposed below the first rotating rod 301, a second rotating wheel 304 is disposed on one side of the second rotating rod 303, and a stopper 305 is disposed on one side of the second rotating rod 303. The design of the manual automatic fault injection box for the automobile chassis electronic control system provides a convenient movement and support mechanism, and the support mechanism 3 includes a first rotating rod 301, one end of the first rotating rod 301 is rotatably connected to a first rotating wheel 302, a second rotating rod 303 is disposed below the first rotating rod 301, a second rotating wheel 304 is disposed on one side of the second rotating rod 303, and a stopper 305 is disposed on one side of the second rotating rod 303. The first rotating rod 301 and the second rotating rod 303 in the supporting mechanism 3 and the corresponding first rotating wheel 302 and the second rotating wheel 304 enable the chassis to be easily pulled out and pushed into the test cabinet and moved to a suitable position, thereby improving the convenience of use. At the same time, the design of the stopper 305 provides stable support for the chassis, ensuring that the second rotating rod 303 can provide stable support when performing fault injection testing, thereby ensuring that the chassis is stably placed in the desired position and will not move or tilt due to external factors, thereby ensuring the accuracy and reliability of the test.

[0039] See also Figure 1 and Figure 3A slot 307 is provided on the first rotating rod 301, and a block 306 is engaged inside the slot 307. By providing the slot 307 on the first rotating rod 301 and engaging the block 306 inside the slot 307, additional stability and fixity are provided for the supporting mechanism 3 of the chassis. The slot 307 and the block 306 enable the first rotating rod 301 to be firmly locked at the required position to prevent it from accidental movement or rotation. At the same time, this engagement design enhances the safety of the device and optimizes the user experience, making it more reliable when using the automobile chassis electronic control system.

[0040] See also Figure 1 and Figure 3 The material of the card block 306 is rubber, and the card block 306 is fixedly connected to the chassis case 1. By selecting rubber as the material of the card block 306, the locking structure provides good elasticity and wear resistance. The rubber card block 306 can better adapt to the shape of the card slot 307, ensuring the tightness and stability of the locking, and can achieve quick unlocking when unlocking is required. At the same time, the fixed connection between the card block 306 and the chassis case 1 further enhances the stability of the overall structure. This connection method ensures that the card block 306 will not fall off or shift due to external factors, thereby ensuring the reliability and safety of the support mechanism 3.

[0041] See also Figure 1 and Figure 3 The first rotating rod 301 and the second rotating rod 303 are both rotatably connected to the chassis body 1 through the torsion shaft. The first rotating rod 301 and the second rotating rod 303 are rotatably connected to the chassis body 1 through the torsion shaft, so that the rotating rod can be pushed by the torsion rotation when needed to achieve automatic opening, which is convenient for supporting the chassis. At the same time, the torsion shaft also has a certain tightening force, which can maintain the stability of the rotating rod after it reaches a predetermined position, preventing accidental rotation due to external force or vibration.

[0042] See also Figure 2 A multi-channel relay board 4 is arranged in the middle of the chassis case 1 to realize the fault injection function for the sample, which can be used to control the on-off of the hard-wire path. By arranging a multi-channel relay board 4 in the middle of the chassis case 1, a powerful fault injection function is provided for the sample. The relay board 4 can accurately control the on-off of the hard-wire path, thereby simulating various possible fault conditions, and providing comprehensive support for the test of the automobile chassis electronic control system. At the same time, the multi-channel design enables the relay board 4 to control multiple hard-wire paths at the same time, thereby improving the test efficiency and accuracy. This design not only saves test time, but also enables testers to have a more comprehensive understanding of the performance of the system under fault conditions, and provides strong data support for product improvement and optimization.

[0043] See also Figure 2 , the relay board 4 can control the on and off of the corresponding channel through the CAN message sent by the host computer software, thereby realizing automatic fault injection. By allowing the host computer software to control the on and off of the corresponding channel of the relay board 4 through the CAN message, the automatic control not only reduces the complexity and error rate of manual operation, but also makes the test process more efficient and accurate. At the same time, the tester can set a specific fault injection sequence through programming as needed, so as to more comprehensively simulate and test the response of the system under various fault conditions, which helps to improve the quality of the test and provide more detailed and accurate data support for the design and improvement of the automotive chassis electronic control system.

[0044] See also Figure 2 Relay board 4 can be used to implement on-off fault injection and high-pull-ground fault injection for the PINs that need fault injection for the sample. Relay board 4 can implement on-off fault injection for the PINs that need fault injection for the sample. It can simulate the open circuit or short circuit in the circuit by controlling the opening and closing of the relay, which helps engineers understand and improve the stability and reliability of the system under abnormal conditions. At the same time, relay board 4 can also implement high-pull-ground fault injection, that is, by controlling the relay to pull a certain point in the circuit to a high level or pull it down to the ground level, thereby simulating abnormal voltage conditions, which can help testers evaluate the performance of the system when the voltage fluctuates or is abnormal, and ensure that the automotive chassis electronic control system can cope with various complex electrical environments in actual use.

[0045] See also Figure 1 , Figure 3 and Figure 4 A panel connector 6 is provided on the chassis panel 2, and the panel connector 6 includes an EDAC input connector 601, an EDAC output connector 602, an interface 603, a fault injection type indicator light 604, and a power indicator light 605. By providing the panel connector 6 on the chassis panel 2, including the EDAC input connector 601, the EDAC output connector 602, the interface 603, the fault injection type indicator light 604, and the power indicator light 605, the connectivity and ease of use of the device are enhanced. The EDAC input connector 601 and the EDAC output connector 602 enable the device to be easily connected to samples and standardized chassis, thereby quickly building a test system. At the same time, the interface 603 provides a connection point, which increases the flexibility and scalability of the device. The fault injection type indicator light 604 can intuitively display the current fault injection type, so that the tester can quickly understand the test status, and the power indicator light 605 is used to indicate the power status of the device, ensuring that the device has a stable power supply during normal operation, making the test process more intuitive and controllable.

[0046] See also Figure 1 , Figure 3 and Figure 4 The fault injection type indicator light 604 can be used to indicate whether there is currently a fault injection and what type of fault injection it is. The fault injection type indicator light 604 can clearly indicate whether there is currently a fault injection in progress, providing an intuitive basis for testers to quickly understand the test status of the system without having to refer to complex test data or reports. At the same time, the indicator light can further display the specific type of fault injection, which improves the transparency and efficiency of the test, because testers can immediately identify the type of fault being injected, so as to monitor the response and performance of the system more specifically.

[0047] See also Figure 2 There are two groups of support mechanisms 3, and the two groups of support mechanisms 3 are arranged in a mirror structure. By arranging two groups of support mechanisms 3 in a mirror structure, the stability and supporting force of the manual automatic fault injection box of the automobile chassis electronic control system are enhanced. The two groups of support mechanisms 3 can provide balanced support from different positions, effectively preventing the chassis from tilting or shaking during use. At the same time, the setting of the mirror structure also makes the entire chassis more visually coordinated and beautiful, and improves the overall texture of the product.

[0048] The implementation principle of the present invention is as follows: first, when it is necessary to take out the injection box, hold the handle and pull the chassis case 1 outwards, at this time the first rotating rod 301 and the second rotating rod 303 are in a retracted state, the first rotating wheel 302 and the second rotating wheel 304 play the role of sliding wheels, making it easier to pull out, when it is pulled out to a certain position, the second rotating wheel 304 at one end of the second rotating rod 303 loses the support of the test cabinet, and rotates downward under the force of the torsion spring, and then when it is fully pulled out, the second rotating rod 303 rotates and is restricted by the block 305, forming a complete rear support, and then the block 306 is pulled upwards so that one end of the block 306 can be disengaged from the slot 307, and then the torsion shaft drives the first rotating rod 301 to rotate and is blocked by the chassis panel 2, at this time, the front support is in place, and then the cable is connected to the interface 603 on the rear side, and then the chassis case 1 is pulled to a suitable position to perform the injection operation;

[0049] When folding, first rotate the first rotating rod 301 to clamp the clamping slot 307 and the clamping block 306 on the first rotating rod 301, and then push it into the frame. At this time, the first rotating wheel 302 contacts the track inside the frame to form a support, and then continue to push, so that the second rotating rod 303 and the second rotating wheel 304 are folded and provide support, and finally slide into the test cabinet;

[0050] The relay board 4 is fixed to the bottom of the chassis body 1 by screws, the power supply of the relay board 4 is connected to the chassis 12V power supply through a connecting line, the interface 603 connecting the sample CAN channel to the chassis panel 2 is connected to the corresponding interface 603 on the rear side through a connecting line, the rear panel interface 603 is connected to the CAN tool, the EDAC input connector 601 of the fault injection box is connected to the sample through a wiring harness, and the EDAC output connector 602 is connected to the standardized chassis through a wiring harness. The fault injection box is connected to the automobile chassis electronic control system test system, and subsequent testing is performed as needed.

[0051] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0052] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A manual and automatic fault injection box for an automobile chassis electronic control system, characterized in that: The invention comprises a chassis body (1), a chassis panel (2) is arranged on one side of the chassis body (1), support mechanisms (3) are arranged on both sides of the chassis body (1), and the support mechanisms (3) comprise a first rotating rod (301), one end of the first rotating rod (301) is rotatably connected to a first rotating wheel (302), a second rotating rod (303) is arranged below the first rotating rod (301), a second rotating wheel (304) is arranged on one side of the second rotating rod (303), and a stopper (305) is arranged on one side of the second rotating rod (303).

2. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 1 is characterized by: The first rotating rod (301) is provided with a slot (307), and a block (306) is engaged inside the slot (307).

3. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 2 is characterized in that: The material of the clamping block (306) is rubber, and the clamping block (306) is fixedly connected to the chassis body (1).

4. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 1 is characterized by: The first rotating rod (301) and the second rotating rod (303) are both rotatably connected to the chassis body (1) via a torque shaft.

5. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 1 is characterized by: A multi-channel relay card (4) is arranged in the middle of the chassis body (1) to realize a fault injection function for the sample and can be used to control the on and off of a hard-wired path.

6. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 5, characterized in that: The relay board (4) can control the on / off of the corresponding channel through the CAN message sent by the host computer software, thereby realizing automatic fault injection.

7. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 5, characterized in that: The relay board (4) can be used to implement on-off fault injection and high-pull-ground fault injection for PINs that require fault injection in a sample.

8. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 1 is characterized by: The chassis panel (2) is provided with a panel connector (6), and the panel connector (6) comprises an EDAC input connector (601), an EDAC output connector (602), an interface (603), a fault injection type indicator light (604), and a power indicator light (605).

9. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 8, characterized in that: The fault injection type indicator light (604) can be used to indicate whether there is currently a fault injection and what type of fault injection it is.

10. The manual and automatic fault injection box for the automobile chassis electronic control system according to claim 1, characterized in that: The support mechanisms (3) are provided in two groups, and the two groups of support mechanisms (3) are provided in a mirror image structure.

Images