A simulation teaching device for automobile electronically controlled air suspension system

Abstract

The utility model belongs to the technical field of vehicle electronic control experimental equipment, and specifically relates to a simulation teaching equipment for automobile electronic control air suspension system, including a vehicle-type test bench, an ECAS controller, a control panel, a centralized wiring terminal, a front axle solenoid valve, a rear axle solenoid valve, a height sensor, an air pipe, an air bag, a shock absorber and an air compressor, wherein the air pipe is used to connect the air compressor, the front axle solenoid valve, the rear axle solenoid valve and the corresponding air bag, the front axle solenoid valve, the rear axle solenoid valve, the height sensor and the air compressor are all electrically connected to the ECAS controller through the centralized wiring terminal, and the control panel is used to input instructions to the ECAS controller, and the ECAS controller controls the front axle solenoid valve and the rear axle solenoid valve to work according to the instructions. The utility model can realize comprehensive operation test and fault simulation and online fault diagnosis and debugging of automobile electronic control air suspension system, and has multiple advantages such as simple structure, clear principle and high integration, low teaching cost and good teaching effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle electronic control experimental equipment, and in particular relates to a simulation teaching device for an automobile electronic control air suspension system. Background Art

[0002] The automobile electronic air suspension system mainly includes electronic control units (ECU), various sensors, control valves and suspension actuators. When the electronic air suspension is working, the interaction of the control valves controls the air flow to the air spring elements (suspension actuators). The sensors detect the driving status of the car and feed back to the ECU. The ECU combines the feedback information to calculate and output instructions to control the inflation and deflation of the air spring elements, so that the electronic air suspension changes with the driving and road conditions, improving the driving smoothness of the car, and then improving the handling stability and ride comfort of the car.

[0003] With the development of automobile electronic air suspension system, it has shown a trend of computerization, intelligence and diversification. Traditional repair tools such as pliers and sledgehammers have become history, replaced by professional automobile testing equipment and correct maintenance ideas. Advanced maintenance and testing equipment such as four-wheel alignment, scanner, automobile oscilloscope, fault computer diagnosis analyzer, etc., which were once very unfamiliar to ordinary automobile maintenance personnel, have become necessary maintenance tools for modern maintenance companies today. Simple disassembly and assembly maintenance methods can no longer meet the requirements of today's society. The electronic control technology maintenance skills of practitioners need to be improved through a combination of theoretical training and practical operation. In the actual operation process, when the real car electronic air suspension is used as the operation object, the operation cost is high, and when there are many students, the students in the back row may not be able to observe the content displayed on the car dashboard; in addition, the real car electronic air suspension is not easy to operate when simulating a fault, and the teaching effect is not ideal. Utility Model Content

[0004] The utility model aims to provide a simulation teaching device for an automobile electronically controlled air suspension system, so as to solve the problem that the teaching effect of an actual automobile electronically controlled air suspension system is not good.

[0005] In order to achieve the above-mentioned purpose, the scheme of the utility model is: a simulation teaching device for an automobile electronically controlled air suspension system, comprising a vehicle-type test bench, an ECAS controller, a control panel, a centralized wiring terminal, a front axle solenoid valve, a rear axle solenoid valve, a height sensor, an air pipe, an air bag, a shock absorber and an air compressor;

[0006] The vehicle-type test stand includes a bottom test stand and an upper test stand. The number of the airbags and shock absorbers are four, and the four airbags and shock absorbers are distributed at the four corners between the bottom test stand and the upper test stand. The number of the height sensors is three, and the three height sensors are respectively installed on both sides of the bottom surface of the upper test stand;

[0007] One end of the air pipe is connected to the air compressor, and the other end of the air pipe has two interfaces, and the two interfaces are respectively connected to the front axle solenoid valve and the rear axle solenoid valve. The front axle solenoid valve is respectively connected to the two air bags through bronchus I, and the rear axle solenoid valve is respectively connected to the remaining two air bags through bronchus II.

[0008] An installation panel is fixedly connected to the bottom surface of the upper platform, and the front axle solenoid valve, rear axle solenoid valve and centralized wiring terminals are fixedly installed on the installation panel. The front axle solenoid valve, rear axle solenoid valve, height sensor and air compressor are electrically connected to the ECAS controller through the centralized wiring terminals. The control panel is electrically connected to the ECAS controller. The control panel is used to input instructions to the ECAS controller, and the ECAS controller controls the operation of the front axle solenoid valve and the rear axle solenoid valve according to the received instructions.

[0009] The working principle and beneficial effects of this scheme are as follows: this scheme simulates the electronically controlled air suspension system of a real vehicle. The operator inputs instructions through the control panel, and the ECAS controller controls the front axle solenoid valve, rear axle solenoid valve and air compressor to achieve the inflation and deflation control of the four airbags, and then achieves the lifting and side kneeling of the upper platform, intuitively showing the working process of the automobile electronically controlled air suspension system, which is convenient for teaching. In addition, in this scheme, circuit failures can be simulated by disconnecting some lines of the centralized wiring terminal, and part failures can be simulated by replacing damaged parts, thereby realizing fault simulation teaching of the automobile electronically controlled air suspension system.

[0010] In summary, this scheme can realize comprehensive operation test, fault simulation and online fault diagnosis and debugging of automobile electronic air suspension system. It has many advantages such as simple structure, clear principle, high integration, strong openness, high safety and low testing cost. It avoids the disadvantage of existing technology that the whole system can only be fully tested on a real vehicle. It provides convenience for the development and testing of automobile electronic air suspension system and has good teaching effect.

[0011] Optionally, an electronic display screen is further included, which is electrically connected to the ECAS controller and is used to display the device name.

[0012] In this solution, the electronic display screen is used to display the device name, so that the action execution device is displayed through dynamic, vivid, clear and easy-to-read text, avoiding limited content display. In addition, when the students cannot hear the teacher's voice clearly during teaching, they can understand the working device at this time through the electronic display screen.

[0013] Optionally, a voice playing module is also included, the voice playing module is electrically connected to the ECAS controller, and the voice playing module is used for voice prompting the operation process.

[0014] In this solution, the operation process is prompted to students through the voice playback module, which is very friendly to some students who are not familiar with the operation process.

[0015] Optionally, LED light bars are installed on both side walls opposite to each other on the upper platform, the LED light bars are electrically connected to the ECAS controller, and the LED light bars are used to prompt that the airbag has reached the upper limit position and / or the lower limit position.

[0016] In this solution, when the LED light bar lights up, it indicates that the corresponding airbag has reached the upper limit position and / or the lower limit position, thereby improving the safety of the trainee's operation and avoiding excessive inflation or deflation of the airbag.

[0017] Optionally, a pipeline filter is installed on the air pipe.

[0018] In this solution, a pipeline filter is used to filter impurities in the air to prevent the impurities from entering the front axle solenoid valve and the rear axle solenoid valve, thereby causing damage to the front axle solenoid valve and the rear axle solenoid valve.

[0019] Optionally, an air pressure sensor for detecting the air pressure in the air pipe is installed on the air pipe, and the air pressure sensor is electrically connected to the ECAS controller via a centralized wiring terminal.

[0020] In this solution, the air pressure data in the air pipe is collected by the air pressure sensor and transmitted to the ECAS controller to monitor the air pipeline pressure. When the pressure is too low, an alarm signal is sent to the ECAS controller to prohibit height adjustment, thereby improving equipment safety.

[0021] Optionally, a plurality of rollers are provided on the bottom surface of the bottom platform.

[0022] In this solution, the roller design on the bottom surface of the bottom frame facilitates the movement of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a simulation teaching device for an automobile electronically controlled air suspension system in a first embodiment of the utility model;

[0024] Figure 2 for Figure 1 Right side view (shock absorber not shown);

[0025] Figure 3 The present invention is a schematic structural diagram of a vehicle electronically controlled air suspension system simulation teaching device in the second embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The marks in the drawings of the specification include: vehicle-type test stand 1, bottom test stand 110, upper test stand 120, ECAS controller 2, control panel 3, centralized wiring terminal 4, front axle solenoid valve 5, rear axle solenoid valve 6, height sensor 7, air pipe 8, airbag 9, shock absorber 10, air compressor 11, electronic display screen 12, voice playback module 13, bronchus I 14, bronchus II 15, pipeline filter 16, installation panel 17, LED light bar 18, roller 19, air pressure sensor 20.

[0028] Embodiment 1

[0029] This embodiment is basically Figure 1 and Figure 2 As shown: a simulation teaching device for an automobile electronically controlled air suspension system, comprising a vehicle-type test bench 1, an ECAS controller 2, a control panel 3, a centralized wiring terminal 4, a front axle solenoid valve 5, a rear axle solenoid valve 6, a height sensor 7, an air pipe 8, an air bag 9, a shock absorber 10, an air compressor 11, an electronic display screen 12 and a voice playback module 13.

[0030] The vehicle-type test stand 1 includes a bottom test stand 110 and an upper test stand 120. There are four airbags 9 and four shock absorbers 10, which are distributed at the four corners between the bottom test stand 110 and the upper test stand 120. For ease of description, the four airbags 9 are numbered 1#, 2#, 3#, and 4# in sequence, where the 1# and 4# airbags 9 are located on the left, and the 2# and 3# airbags 9 are located on the right; there are three height sensors 7, which are respectively installed on both sides of the bottom surface of the upper test stand 120. Specifically, two height sensors 7 are installed at both ends of the front bottom surface of the upper test stand 120, and the remaining height sensor 7 is installed at the left end of the rear bottom surface of the upper test stand 120.

[0031] One end of the air pipe 8 is connected to the air compressor 11, which is located on the bottom platform 110. The other end of the air pipe 8 has two interfaces, and the two interfaces are respectively connected to the front axle solenoid valve 5 and the rear axle solenoid valve 6. The front axle solenoid valve 5 is respectively connected to the two air bags 9 (2# and 3#) located on the right side through the bronchial tube I 14, and the rear axle solenoid valve 6 is respectively connected to the two air bags 9 (1# and 4#) located on the left side through the bronchial tube II 15. The number of bronchial tubes I 14 and II 15 is two. A pipeline filter 16 is installed on the air pipe 8 to filter impurities in the air and prevent impurities from entering the front axle solenoid valve 5 and the rear axle solenoid valve 6.

[0032] The bottom surface of the upper platform 120 is fixedly connected with an installation panel 17, and the front axle solenoid valve 5, the rear axle solenoid valve 6 and the centralized wiring terminal 4 are fixedly installed on the installation panel 17. The front axle solenoid valve 5, the rear axle solenoid valve 6, the height sensor 7 and the air compressor 11 are all electrically connected to the ECAS controller 2 through the centralized wiring terminal 4. The control panel 3 is electrically connected to the ECAS controller 2. The control panel 3 is used to input instructions to the ECAS controller 2. The ECAS controller 2 controls the front axle solenoid valve 5 and the rear axle solenoid valve 6 to work according to the received instructions. The electronic display screen 12 and the voice playback module 13 are both electrically connected to the ECAS controller 2. The electronic display screen 12 is arranged on the outer wall of the ECAS controller 2. The electronic display screen 12 is used to display the device name; the voice playback module 13 is a voice speaker. The voice playback module 13 is arranged on the outer wall of the ECAS controller 2. The voice playback module 13 is used to voice prompt the operation process.

[0033] LED light bars 18 are installed on the front and rear side walls of the upper rack 120. The LED light bars 18 are electrically connected to the ECAS controller 2. The LED light bars 18 are used to prompt that the airbag 9 has reached the upper limit position and / or the lower limit position. In this embodiment, the LED light bars 18 are used to prompt that the airbag 9 has reached the upper limit position and the lower limit position, thereby improving the safety of operation. The bottom surface of the bottom rack 110 is provided with a plurality of rollers 19. In this embodiment, the number of rollers 19 is four, which facilitates the movement of the entire device.

[0034] In actual use, the operator (teacher or student) inputs instructions on the control panel 3. After receiving the instructions, the ECAS controller 2 controls the air compressor 11, the front axle solenoid valve 5 and the rear axle solenoid valve 6 to work according to the instructions, so that the corresponding airbags 9 are inflated and deflated, thereby realizing the lifting or sideways movement of the upper platform 120, that is, realizing the simulation of the automobile electronically controlled air suspension system.

[0035] Specifically, the operator long presses the "up" button on the control panel 3, and the ECAS controller 2 receives the up command. The ECAS controller 2 controls the air compressor 11, the front axle solenoid valve 5, and the rear axle solenoid valve 6 to work, and the inflation channels inside the front axle solenoid valve 5 and the rear axle solenoid valve 6 are opened. The air compressor 11 compresses the outside air, and the compressed air enters the 2# and 3# airbags 9 through the air pipe 8, the front axle solenoid valve 5, and the bronchial tube I 14. At the same time, the compressed air enters the 1# and 4# airbags 9 through the air pipe 8, the rear axle solenoid valve 6, and the bronchial tube II 15, thereby achieving the inflation of the four airbags 9, and then achieving the elevation of the upper platform 120. In this process, the height sensor 7 detects the height of the upper platform 120. After the top of the airbag 9 reaches the upper limit position, the ECAS controller 2 controls the LED light bar 18 to light up, prompting the operator to immediately stop pressing the "up" button. In the above process, when the upper stage 120 rises to a suitable height, the operator stops pressing the “up” button, so that the upper stage 120 can be kept at the corresponding height.

[0036] When the operator long presses the "down" button on the control panel 3, the ECAS controller 2 receives the descending instruction, and the ECAS controller 2 controls the front axle solenoid valve 5 and the rear axle solenoid valve 6 to work, and the exhaust passages inside the front axle solenoid valve 5 and the rear axle solenoid valve 6 are opened, and the air in the airbag 9 is discharged through the front axle solenoid valve 5 and the rear axle solenoid valve 6, thereby achieving the exhaust of the four airbags 9, and then achieving the descent of the upper platform 120. In this process, the height sensor 7 detects the height of the upper platform 120. After the top of the airbag 9 reaches the lower limit position, the ECAS controller 2 controls the LED light bar 18 to light up, prompting the operator to immediately stop pressing the "down" button. In the above process, when the upper platform 120 descends to a suitable height, the operator stops pressing the "down" button, and the upper platform 120 can be kept at the corresponding height.

[0037] When the operator clicks the "right kneeling" button on the control panel 3, the ECAS controller 2 receives the right kneeling instruction, and the ECAS controller 2 controls the front axle solenoid valve 5 and the rear axle solenoid valve 6 to work, and the exhaust passages corresponding to the 1# and 2# airbags 9 in the front axle solenoid valve 5 and the rear axle solenoid valve 6 are opened, so that the air in the 1# and 2# airbags 9 is exhausted, and the front side of the upper platform 120 ( Figure 1 The front side in the view corresponds to the right side of the vehicle) descends, and when the front side of the upper platform 120 descends to the set height (the height is detected by the height sensor 7), the ECAS controller 2 controls the exhaust channels of the front axle solenoid valve 5 and the rear axle solenoid valve 6 to be closed, and the 1# and 2# airbags 9 are no longer exhausted, realizing the right kneeling function.

[0038] Similarly, when the operator clicks the "left kneeling" button on the control panel 3, the ECAS controller 2 receives the left kneeling instruction, and the ECAS controller 2 controls the front axle solenoid valve 5 and the rear axle solenoid valve 6 to work, and the exhaust channels corresponding to the 3# and 4# airbags 9 inside the front axle solenoid valve 5 and the rear axle solenoid valve 6 are opened, so that the air in the 3# and 4# airbags 9 is discharged, and the rear side of the upper platform 120 (equivalent to the left side of the vehicle) descends. When the rear side of the upper platform 120 descends to the set height (the height is detected by the height sensor 7), the ECAS controller 2 controls the exhaust channels of the front axle solenoid valve 5 and the rear axle solenoid valve 6 to close, and the 3# and 4# airbags 9 are no longer exhausted, thereby realizing the left kneeling function.

[0039] During the above process, the electronic display screen 12 displays the name of the action execution part. For example, in the process of kneeling on the left side, the electronic display screen 12 displays "3# airbag 9, 4# airbag 9 exhaust, kneel on the left side". At the same time, the voice playback module 13 plays voice during the operation to prompt the operator to perform the next operation process. For example, during the process of the upper platform 120 rising, when the top of the airbag 9 reaches the upper limit position, the voice playback module 13 plays "Please stop pressing the rising button immediately" and the like.

[0040] In addition, a certain connection of the centralized wiring terminal 4 is disconnected to simulate a circuit fault; a certain part is replaced with a damaged part to simulate a part fault, thereby realizing the fault simulation teaching of the automobile electronically controlled air suspension system. For example, the connection corresponding to the front axle solenoid valve 5 on the centralized wiring terminal 4 is disconnected to simulate a circuit fault; for another example, the front axle solenoid valve 5 is replaced with a damaged front axle solenoid valve to simulate a part fault.

[0041] In summary, this embodiment can realize comprehensive operation test, fault simulation and online fault diagnosis and debugging of automobile electronic air suspension system, and has many advantages such as simple structure, clear principle, high integration, strong openness, high safety and low testing cost. It avoids the disadvantage of the prior art that the whole system can only be fully tested on a real vehicle, and provides convenience for the development and testing of automobile electronic air suspension system, with good teaching effect.

[0042] Embodiment 2

[0043] The difference between this embodiment and the first embodiment is that: Figure 3 As shown, in this embodiment, an air pressure sensor 20 for detecting the air pressure in the air pipe is installed on the air pipe 8, and the air pressure sensor 20 is electrically connected to the ECAS controller 2 through the centralized wiring terminal 4.

[0044] In this embodiment, the air pressure information in the air pipe 8 is detected by the air pressure sensor 20, and the detected air pressure information is transmitted to the ECAS controller 2, so that when the air pressure in the air pipe 8 is too high or too low, the height adjustment of the upper platform 120 is prohibited, thereby improving the safety of the equipment.

[0045] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model. The specific implementation methods and other records in the specification can be used to explain the content of the claims.

Claims

1. A simulation teaching device for an automobile electronically controlled air suspension system, characterized in that: It includes a vehicle-type test bench, ECAS controller, control panel, centralized wiring terminal, front axle solenoid valve, rear axle solenoid valve, height sensor, air pipe, air bag, shock absorber and air compressor; The vehicle-type test stand includes a bottom test stand and an upper test stand. The number of the airbags and shock absorbers are four, and the four airbags and shock absorbers are distributed at the four corners between the bottom test stand and the upper test stand. The number of the height sensors is three, and the three height sensors are respectively installed on both sides of the bottom surface of the upper test stand; One end of the air pipe is connected to the air compressor, and the other end of the air pipe has two interfaces, and the two interfaces are respectively connected to the front axle solenoid valve and the rear axle solenoid valve. The front axle solenoid valve is respectively connected to the two air bags through bronchus I, and the rear axle solenoid valve is respectively connected to the remaining two air bags through bronchus II. An installation panel is fixedly connected to the bottom surface of the upper platform, and the front axle solenoid valve, rear axle solenoid valve and centralized wiring terminals are fixedly installed on the installation panel. The front axle solenoid valve, rear axle solenoid valve, height sensor and air compressor are electrically connected to the ECAS controller through the centralized wiring terminals. The control panel is electrically connected to the ECAS controller. The control panel is used to input instructions to the ECAS controller, and the ECAS controller controls the operation of the front axle solenoid valve and the rear axle solenoid valve according to the received instructions.

2. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: It also includes an electronic display screen, which is electrically connected to the ECAS controller and is used to display the device name.

3. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: It also includes a voice playing module, which is electrically connected to the ECAS controller and is used for voice prompting the operation process.

4. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: LED light bars are installed on both opposite side walls of the upper platform, the LED light bars are electrically connected to the ECAS controller, and the LED light bars are used to prompt that the airbag has reached the upper limit position and / or the lower limit position.

5. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: A pipeline filter is installed on the air pipe.

6. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: The air pipe is equipped with an air pressure sensor for detecting the air pressure in the pipe, and the air pressure sensor is electrically connected to the ECAS controller via a centralized wiring terminal.

7. The automobile electronically controlled air suspension system simulation teaching device according to claim 1, characterized in that: The bottom surface of the bottom platform is provided with a plurality of rollers.

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