Environmental warehouse waste tail pipe system and control method thereof

Abstract

The present application provides an environmental chamber exhaust tail pipe system and a control method thereof, including: a test bench for placing a test vehicle in the environmental chamber, the test vehicle is equipped with a heat dissipation fan, when the test vehicle is tested on the test bench, the heat dissipation fan generates heat dissipation wind to dissipate heat for the test vehicle; a tail pipe bracket is arranged at the exhaust port near the rear of the test vehicle, the tail pipe bracket is used to support and fix the tail pipe during the test, and the tail pipe is connected to the exhaust port of the test vehicle; a supporting device includes a support plate, the support plate is detachably connected to the tail pipe bracket, a fixing component is provided on the support plate, and the fixing component is used to automatically adjust the fixing force according to the wind speed of the heat dissipation wind and the vibration intensity of the test bench during the test, so as to fix the support plate on the test bench. This solution can effectively prevent the tail pipe bracket from shaking or shifting when the wind speed of the heat dissipation fan is large or the vibration of the test bench is strong, thereby avoiding the loosening of the tail pipe and the vehicle exhaust port.

Description

Technical Field

[0001] The present application relates to the field of automobile testing technology, and in particular to an environmental chamber exhaust tail pipe system and a control method thereof. Background Art

[0002] With the continuous development of the automotive industry, the demand for vehicle performance testing is also increasing. As an important testing equipment, environmental chambers are widely used in various tests of fuel vehicles and hybrid vehicles.

[0003] In the prior art, the exhaust tail pipe device of the environmental chamber is mainly composed of components such as a tail pipe, a tail pipe bracket and an exhaust fan. However, this traditional exhaust tail pipe device has some obvious shortcomings. During the test, as the vehicle speed increases, the wind speed of the vehicle's cooling fan will also increase. At this time, the tail pipe bracket will become shaky due to the lack of effective fixation. In order to prevent the tail pipe bracket from shaking, it is usually necessary to use heavy objects to hold it down, but this temporary solution is not only inconvenient to operate, but also poses a safety hazard. If the tail pipe bracket shakes too much, it may cause the tail pipe to loosen from the vehicle's exhaust port, causing the vehicle's exhaust gas to leak. Once the exhaust gas leaks, it will not only affect the accuracy of the test results, but may also trigger the alarm system of the environmental chamber, causing unnecessary damage to the test equipment and personnel. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide an environmental bin waste discharge tail pipe system and a control method thereof to effectively fix the tail pipe bracket.

[0005] In a first aspect, the present application proposes an environmental warehouse waste tail pipe system, comprising: An environmental chamber, wherein the environmental chamber has a test bench for placing a test vehicle, and the test vehicle is equipped with a cooling fan. When the test vehicle is tested on the test bench, the cooling fan generates cooling air to dissipate heat from the test vehicle; A tail pipe bracket, the tail pipe bracket is arranged near the tail exhaust port of the test vehicle, the tail pipe bracket is used to support and fix the tail pipe during the test, and the tail pipe is connected to the exhaust port of the test vehicle; A supporting device, the supporting device includes a supporting plate, the supporting plate is detachably connected to the tail pipe bracket, a fixing component is provided on the supporting plate, and the fixing component is used to automatically adjust the fixing force according to the wind speed of the cooling air and the vibration intensity of the test bench during the test to fix the supporting plate on the test bench.

[0006] According to the technical solution provided in the embodiment of the present application, the fixing component includes a plurality of fixed suction cups installed on the support plate, and a negative pressure component for vacuuming the fixed suction cups, each of the fixed suction cups has an air suction port, each of the air suction ports is respectively connected to an air suction pipe, and all of the air suction pipes are connected to the air suction port of the negative pressure component.

[0007] According to the technical solution provided in the embodiment of the present application, it also includes a collection component, which at least includes a vibration sensor installed on the test bench and a wind speed sensor installed on the side of the heat dissipation fan facing the tail pipe bracket; the negative pressure component includes a vacuum module and a calculation module, the calculation module is electrically connected to the collection component, the calculation module is used to calculate the target vacuum degree of the vacuum module according to the real-time reading of the vibration sensor and the real-time reading of the wind speed sensor, and the vacuum module is used to vacuum each of the fixed suction cups according to the target vacuum degree.

[0008] According to the technical solution provided in the embodiment of the present application, the support plate has an installation area at its center position, the installation area has a plurality of installation holes, the installation holes are used to install the tail pipe bracket, the fixing assembly is arranged in the remaining area, the remaining area is the area on the support plate except the installation area, and the fixing suction cups are evenly distributed in the remaining area.

[0009] According to the technical solution provided in the embodiment of the present application, a plurality of movable wheels with a self-locking function are provided on the back of the support plate.

[0010] According to the technical solution provided in the embodiment of the present application, the vacuum module is provided with a vacuum status display, and the vacuum status display is used to display the target vacuum degree and the actual vacuum degree in each of the fixed suction cups.

[0011] According to the technical solution provided in the embodiment of the present application, a movable handle is rotatably connected to the support plate, and the rotation axis direction of the movable handle is a first direction, and the first direction is the thickness direction of the support plate.

[0012] In a second aspect, the present application provides a control method for an environmental bin exhaust tail pipe system, which is used to control the fixed components of the environmental bin exhaust tail pipe system as described above; the method comprises the following steps: Setting an initial vacuum degree, and upon receiving a test start signal, controlling each of the fixed suction cups to reach the initial vacuum degree; the initial vacuum degree is greater than the target vacuum degree; At intervals of a first preset time length, wind speed information and vibration information are acquired in real time, wherein the wind speed information is a reading of the wind speed sensor, and the vibration information is a reading of the vibration sensor; According to the wind speed information and the vibration information, a required vacuum degree is obtained, wherein the required vacuum degree is a vacuum degree corresponding to a force provided by the fixing assembly and sufficient to ensure that the tail pipe bracket and the support plate are stably fixed on the test bench in order to resist the interference force generated by the wind speed of the cooling fan and the vibration of the test bench during the test; Obtaining the number of suction cups of the fixed suction cup contained in the fixed assembly, and obtaining a target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree; if the difference between the initial vacuum degree and the target vacuum degree is less than or equal to the first preset threshold, the initial vacuum degree is kept unchanged.

[0013] According to the technical solution provided in the embodiment of the present application, the setting of the initial vacuum degree specifically includes the following steps: Obtaining a test type, and obtaining, according to the test type, a maximum wind speed of the cooling fan and a maximum vibration intensity of the test bench during the test; The initial vacuum degree is obtained according to the maximum wind speed and the maximum vibration intensity.

[0014] According to the technical solution provided in the embodiment of the present application, after obtaining the target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree, the following steps are also included: Get the cumulative duration of the test corresponding to the current moment; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, controlling the vacuum pumping module to reduce the initial vacuum degree to the target vacuum degree specifically includes the following steps: If the cumulative test duration is greater than or equal to a first preset duration, and the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree.

[0015] Compared with the prior art, the beneficial effect of the present application is that in the vehicle test scenario, the fixing components of the exhaust tail pipe system of the environmental chamber can automatically adjust the fixing force according to the wind speed of the cooling air and the vibration intensity of the test bench, ensuring that the tail pipe bracket and the support plate can remain stable under various test conditions. Even when the cooling fan wind speed is high or the test bench vibrates strongly, it can effectively prevent the tail pipe bracket from shaking or shifting, thereby avoiding the loosening of the tail pipe and the vehicle exhaust port, reducing the risk of vehicle exhaust leakage, and improving the safety of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the environmental chamber waste tail pipe system provided in an embodiment of the present application; Figure 2 A flow chart of the steps of a method for controlling an environmental bin waste tail pipe system provided in an embodiment of the present application.

[0017] The text annotations in the figure represent: 1. Support plate; 2. Moving handle; 3. Fixed suction cup 1; 4. Fixed suction cup 2; 5. Fixed suction cup 3; 6. Fixed suction cup 4; 7. Mounting hole; 8. Moving wheel 1; 9. Moving wheel 2, 10. Moving wheel 3; 11. Moving wheel 4; 12. Negative pressure component; 13. Vacuum status display. DETAILED DESCRIPTION

[0018] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] Example 1 As mentioned in the background technology, in view of the problems in the prior art, the present application proposes an environmental warehouse waste tail pipe system, comprising: An environmental chamber, wherein the environmental chamber has a test bench for placing a test vehicle, and the test vehicle is equipped with a cooling fan. When the test vehicle is tested on the test bench, the cooling fan generates cooling air to dissipate heat from the test vehicle; A tail pipe bracket, the tail pipe bracket is arranged near the tail exhaust port of the test vehicle, the tail pipe bracket is used to support and fix the tail pipe during the test, and the tail pipe is connected to the exhaust port of the test vehicle; A supporting device, the supporting device comprises a supporting plate 1, the supporting plate 1 is detachably connected to the tail pipe bracket, a fixing component is provided on the supporting plate 1, and the fixing component is used to automatically adjust the fixing force according to the wind speed of the cooling wind and the vibration intensity of the test bench during the test to fix the supporting plate 1 on the test bench.

[0021] Please refer to Figure 1As shown, further, the support plate 1 has an installation area at its center position, and the installation area has a plurality of installation holes 7, and the installation holes 7 are used to install the tail pipe bracket. The fixing assembly is arranged in the remaining area, and the remaining area is the area on the support plate 1 except the installation area, and the fixing suction cups are evenly distributed in the remaining area.

[0022] Furthermore, the fixing component includes a plurality of fixed suction cups mounted on the support plate 1, and a negative pressure component 12 for evacuating the fixed suction cups, each of the fixed suction cups having an air suction port, each of the air suction ports being respectively connected to an air suction pipe, and all of the air suction pipes being connected to the air suction port of the negative pressure component 12.

[0023] Specifically, the fixing suction cup is made of high-strength, wear-resistant materials to ensure its stability and durability for long-term use; the support plate 1 is a rectangular or square plate structure with four mounting holes 7 at the center. The tail pipe bracket is placed on the mounting area of ​​the support plate 1 so that the connection point on the tail pipe bracket is aligned with the four mounting holes 7 on the support plate 1. Insert the bolts into the four mounting holes 7 from the back of the support plate 1 in sequence so that the head of the bolt is located on the front of the support plate 1 and the threaded part extends out of the back. Put gaskets on the threaded part of the bolt in sequence. The function of the gasket is to increase the contact area, disperse the pressure, and prevent the bolt from loosening. Align the connection part of the tail pipe bracket with the bolt to ensure that the hole of the connection part completely overlaps with the mounting hole 7. Screw the nut onto the bolt from the back of the support plate 1 and tighten the nut step by step using a wrench or other tool. In the process of tightening the nut, ensure that the tail pipe bracket fits tightly with the support plate 1 without any gap. Check the firmness of the installation. Gently shake the tail pipe bracket to check if there is any looseness. If any looseness is found, tighten the nut further or check the connection for problems until there is no looseness.

[0024] Specifically, a fixed suction cup is provided at each of the four edges of the rectangular support plate 1. The knob-type fixed suction cups can be selected, namely fixed suction cup 1 3, fixed suction cup 2 4, fixed suction cup 3 5, and fixed suction cup 4 6. The suction surface of the fixed suction cup faces the ground side of the test bench (i.e., the back of the fixed suction cup), and the air intake of the fixed suction cup is provided on the front of the support plate 1. For the air intake of each fixed suction cup, an independent air intake pipe is connected. The air intake pipe adopts a rubber tube or plastic hose with certain flexibility and pressure resistance to ensure that it can adapt to different angles and position changes during the connection process, and at the same time ensure that it will not break or deform under the action of negative pressure. The four air intake pipes are arranged along the edge of the support plate 1, and interference with other components is avoided as much as possible. The air intake pipe can be fixed to the edge of the support plate 1 with a pipe clamp or a fixing belt to prevent the air intake pipe from shaking or shifting during use. The tail ends of the four suction pipes gradually converge to form a main pipe. The diameter of the main pipe can be selected according to the size of the suction port of the negative pressure component 12 to ensure a tight connection and no leakage. The negative pressure component 12 is arranged at an end corner of the rectangular support plate 1 to ensure that the installation position of the vacuum module is stable and will not be affected by vibration or external force.

[0025] Furthermore, it also includes a collection component, which at least includes a vibration sensor installed on the test bench and a wind speed sensor installed on the side of the heat dissipation fan facing the tail pipe bracket; the negative pressure component 12 includes a vacuum module and a calculation module, the calculation module is electrically connected to the collection component, the calculation module is used to calculate the target vacuum degree of the vacuum module according to the real-time reading of the vibration sensor and the real-time reading of the wind speed sensor, and the vacuum module is used to vacuum each of the fixed suction cups according to the target vacuum degree.

[0026] Specifically, the real-time reading of the vibration sensor represents the vibration intensity of the test bench, and the real-time reading of the wind speed sensor represents the wind speed of the cooling fan. Select a suitable position on the test bench to install the vibration sensor. Generally speaking, you can choose a position close to the tail pipe bracket of the test bench, or install it at a key support position of the test bench. Ensure that the vibration sensor is firmly installed and will not loosen or shift during the test. You can install multiple vibration sensors at different positions of the test bench and take the average reading of all vibration sensors as the real-time reading to obtain a more accurate vibration intensity. Install the wind speed sensor at a suitable position on the side of the cooling fan facing the tail pipe bracket. You can choose to install it near the air outlet of the cooling fan, or in the air duct between the fan and the tail pipe bracket. Ensure that the wind speed sensor can accurately measure the wind speed generated by the cooling fan facing the tail pipe bracket. Use a suitable mounting bracket or fixture to fix the wind speed sensor at the installation position. Ensure that the wind speed sensor is firmly installed and will not shake or shift during the operation of the fan.

[0027] Specifically, the computing module is equipped with a pre-trained computing model, the input of the computing model may be wind speed and vibration intensity, and the output is vacuum degree.

[0028] Furthermore, since the suction force of the fixed suction cup will be affected by the temperature and humidity of the environment, the higher the temperature and / or the greater the humidity, the less likely it is that the fixed suction cup will be adsorbed on the test bench floor of the environmental chamber, and a greater vacuum degree may be required at this time. Therefore, the environmental information is taken into account to improve the accuracy of the target vacuum degree calculation. Specifically, the acquisition component also includes a temperature sensor and a humidity sensor disposed in the environmental chamber, and the calculation module is used to calculate the target vacuum degree of the vacuum pump module based on the real-time reading of the vibration sensor, the real-time reading of the wind speed sensor, the real-time reading of the temperature sensor, and the real-time reading of the humidity sensor. Correspondingly, the input of the calculation model is wind speed, vibration intensity, air temperature, and air humidity, and the output is vacuum degree.

[0029] In a preferred embodiment, a plurality of moving wheels with a self-locking function are provided on the back of the support plate 1 .

[0030] Specifically, there are four moving wheels, namely, moving wheel one 8, moving wheel two 9, moving wheel three 10, and moving wheel four 11. Moving wheels with self-locking function are used, and ratchet and pawl mechanisms can be used. These mechanisms should be able to reliably lock the wheels. When the support plate 1 and the tail pipe bracket need to be moved, the self-locking state of the moving wheels is released, and the support plate 1 is conveniently pushed to the rear exhaust port position of the test vehicle. When it reaches the appropriate position, the moving wheels are locked to prevent the support plate 1 from accidentally moving during the test.

[0031] In a preferred embodiment, the vacuum module is provided with a vacuum status display 13, and the vacuum status display 13 is used to display the target vacuum degree and the actual vacuum degree in each of the fixed suction cups.

[0032] Specifically, a small pressure sensor is provided in each fixed suction cup to collect the actual vacuum degree therein. The vacuum status display 13 is electrically connected to the calculation module and each small pressure sensor. The vacuum status display 13 can be optionally a digital display screen, which can display the target vacuum degree calculated by the calculation module and the actual vacuum degree in each fixed suction cup in real time. The operator can intuitively understand the vacuum state of the fixed suction cup through the vacuum status display 13, so as to find problems in time and make adjustments. The vacuum status display 13 can also be an adsorption status indicator light, which is used to intuitively display the adsorption state of the fixed suction cup. When the fixed suction cup is in a normal adsorption state, the indicator light turns green, indicating that the adsorption force is stable. Once the adsorption force decreases or the vacuum degree is insufficient (the actual vacuum degree is less than the target vacuum degree), the indicator light will immediately turn red to remind the operator to take timely measures.

[0033] In a preferred embodiment, a movable handle 2 is rotatably connected to the support plate 1 , and the rotation axis direction of the movable handle 2 is a first direction, and the first direction is a thickness direction of the support plate 1 .

[0034] Specifically, the existing exhaust tail pipe bracket has no movable method. When testing the vehicle in the environmental chamber, it needs to be moved to the rear of the car by hand and connected to the exhaust port of the car, which is laborious and time-consuming, affecting work efficiency. Under this embodiment, the staff can hold the moving handle 2 and pull the support device to move. There are also moving wheels at the bottom of the support device, which saves effort and time.

[0035] Example 2 Based on Example 1, this example proposes a control method for an environmental bin exhaust tail pipe system, which specifically includes the following steps: Place the test vehicle on the test bench and fix the tail pipe on the tail pipe bracket; start the test vehicle and the cooling fan and start the test; The acquisition component collects the vibration information of the test bench and the wind speed information of the cooling fan in real time, and transmits the vibration information and wind speed information to the calculation module. The calculation module calculates the target vacuum degree of the vacuum module according to the information, and sends the target vacuum degree to the vacuum module; The vacuum module performs a vacuum operation on the fixed suction cup according to the target vacuum degree, so that the fixed suction cup generates sufficient adsorption force to fix the support plate 1 on the test bench, thereby playing a role in stably supporting the tail pipe bracket; During the test, the system continuously monitors the wind speed and vibration information in real time, and automatically adjusts the target vacuum degree of the vacuum module to ensure that the support plate 1 always remains stable and fixed.

[0036] Specifically, the control method can use the vacuum module to perform a vacuum operation on the fixed suction cup according to the target vacuum degree calculated in real time, so that the fixed suction cup generates sufficient adsorption force to fix the support plate 1, thereby ensuring the stability of the position of the tail pipe bracket on the test bench. At the same time, stable fixation can also reduce the impact of vehicle shaking on the accuracy of test data. For example, in vehicle dynamic performance testing, exhaust emission testing, etc., accurate vehicle position helps to improve the reliability of test data.

[0037] Specifically, the vibration information and wind speed information are output to the above-mentioned calculation model to obtain the total vacuum degree, which is then divided by the number of corresponding fixed suction cups to obtain the target vacuum degree of each fixed suction cup.

[0038] This embodiment proposes a control method, which can achieve the technical effect of fixing the support plate 1 to the floor of the test platform of the environmental chamber by fixing the suction cup to a certain extent. However, since this method vacuums the fixed suction cup only after the wind speed and vibration information are collected, there may be control lag in some scenarios. For example, at a certain moment, the wind speed of the cooling fan suddenly increases or the vibration intensity of the test platform suddenly increases. When the vacuum degree of the fixed suction cup is controlled after this information is collected, it is very likely that the fixed suction cup will be detached from the floor of the test platform due to the insufficient vacuum degree of the current fixed suction cup, and the purpose of stably fixing the tail pipe bracket cannot be achieved. Therefore, the following improvement plan is proposed.

[0039] Example 3 Based on Example 1, this example proposes a control method for an environmental bin exhaust tail pipe system, which is used to control the fixed components of the environmental bin exhaust tail pipe system as described above; Figure 2 As shown, the control method includes the following steps: Setting an initial vacuum degree, and upon receiving a test start signal, controlling each of the fixed suction cups to reach the initial vacuum degree; the initial vacuum degree is greater than the target vacuum degree; At intervals of a first preset time length, wind speed information and vibration information are acquired in real time, wherein the wind speed information is a reading of the wind speed sensor, and the vibration information is a reading of the vibration sensor; According to the wind speed information and the vibration information, a required vacuum degree is obtained, wherein the required vacuum degree is a vacuum degree corresponding to a force provided by the fixing assembly that is sufficient to ensure that the tail pipe bracket and the support plate 1 are stably fixed on the test bench in order to resist the interference force generated by the wind speed of the cooling fan and the vibration of the test bench during the test; Obtaining the number of suction cups of the fixed suction cup contained in the fixed assembly, and obtaining a target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree; if the difference between the initial vacuum degree and the target vacuum degree is less than or equal to the first preset threshold, the initial vacuum degree is kept unchanged.

[0040] Specifically, the present embodiment first sets the initial vacuum degree, and when the test start signal is received, the initial vacuum degree is controlled in each fixed suction cup. The initial vacuum degree is greater than the target vacuum degree, so that at the beginning of the test, the fixed suction cup has sufficient adsorption force to initially stabilize the support plate 1 and the tail pipe bracket, avoiding shaking at the beginning of the test due to the fixed suction cup not reaching the appropriate vacuum degree. Then, during the test, the wind speed information and vibration information are obtained in real time at each first preset time interval, and the required vacuum degree is obtained according to these information. The required vacuum degree is the total vacuum degree of all fixed suction cups obtained according to the two information, divided by the number of fixed suction cups, that is, the target vacuum degree of each fixed suction cup is obtained. If the target vacuum degree does not need to be so high at this time, in order to save energy and avoid unnecessary energy waste of the vacuum module (vacuum pump), the real-time vacuum degree is reduced from the initial vacuum degree to the target vacuum degree corresponding to the wind speed information and vibration information. Specifically, if the difference between the initial vacuum degree and the target vacuum degree is large, the initial vacuum degree is reduced to the target vacuum degree; if the difference is less than or equal to the first preset threshold value, the initial vacuum degree is kept unchanged. This method of comparing the difference and adjusting the vacuum degree in time allows the vacuum degree of the fixed suction cup to adapt to the changes in wind speed and vibration during the test more flexibly and timely, and can also reduce energy loss. Since Example 2 controls the vacuum degree based on information collected in real time, there may be a situation where the current vacuum degree is insufficient to support the interference force generated by the wind speed and vibration at the current moment. The present embodiment, on the basis of a vacuum degree that is sufficient to stably support the interference force (initial vacuum degree), adaptably reduces the real-time vacuum degree of the fixed suction cup according to the actual interference force during the test (vibration of the test bench and blowing of the cooling fan), thereby effectively solving the control lag problem that may occur in Example 2.

[0041] Furthermore, the setting of the initial vacuum degree specifically comprises the following steps: Obtaining a test type, and obtaining, according to the test type, a maximum wind speed of the cooling fan and a maximum vibration intensity of the test bench during the test; Specifically, the test type information can be entered by interacting with the test management system or by the operator manually when starting the test. For example, the test type can be divided into different types such as power performance test and exhaust emission test. The maximum wind speed and maximum vibration intensity are obtained according to the test type: different test types usually correspond to different cooling fan operation modes and test vehicle operation modes, and the test vehicle operation mode affects the vibration of the test bench. The system pre-stores the correspondence between different test types and the maximum wind speed of the cooling fan and the maximum vibration intensity of the test bench, and creates a correspondence table.

[0042] For example, in a power performance test, since the vehicle may run at a higher power and have a greater heat dissipation requirement, the cooling fan may run at a higher wind speed, and the test bench may also be subjected to greater vibration. By querying the pre-established correspondence table, the maximum wind speed of the cooling fan and the maximum vibration intensity of the test bench under this test type can be obtained.

[0043] The initial vacuum degree is obtained according to the maximum wind speed and the maximum vibration intensity.

[0044] Specifically, the system calculates the initial vacuum degree through the above calculation model according to the obtained maximum wind speed and maximum vibration intensity.

[0045] Furthermore, after obtaining the target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree, the method further includes the following steps: Get the cumulative duration of the test corresponding to the current moment; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, controlling the vacuum pumping module to reduce the initial vacuum degree to the target vacuum degree specifically includes the following steps: If the cumulative test duration is greater than or equal to a first preset duration, and the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree.

[0046] Specifically, the time after the start of the test can be recorded by a timer to obtain the cumulative duration of the test corresponding to the current moment. This timer can be started when the test start signal is triggered, and the time can be continuously recorded. After the system obtains the target vacuum degree of each suction cup, it is necessary to consider the cumulative duration of the test and the difference between the initial vacuum degree and the target vacuum degree at the same time. The next step is performed only when the cumulative duration of the test is greater than or equal to the first preset duration, and the difference between the initial vacuum degree and the target vacuum degree is greater than the first preset threshold. The first preset duration can be set according to actual conditions, for example, it can be set to a few minutes or tens of minutes after the start of the test. The setting of this time period must take into account the stability and response speed of the test system, avoiding too frequent adjustments to the vacuum degree, and ensuring that it can be adjusted in time when needed.

[0047] This embodiment further limits the control of the target vacuum degree corresponding to the wind speed and vibration intensity to a certain period of time after the start of the test, which effectively avoids the problem of frequent control of the target vacuum degree caused by frequent changes in wind speed and vibration intensity due to repeated debugging at the beginning of the test.

[0048] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An environmental warehouse waste tail pipe system, characterized in that: include: An environmental chamber, wherein the environmental chamber has a test bench for placing a test vehicle, and the test vehicle is equipped with a cooling fan. When the test vehicle is tested on the test bench, the cooling fan generates cooling air to dissipate heat from the test vehicle; A tail pipe bracket, the tail pipe bracket is arranged near the tail exhaust port of the test vehicle, the tail pipe bracket is used to support and fix the tail pipe during the test, and the tail pipe is connected to the exhaust port of the test vehicle; A support device, the support device comprising a support plate (1), the support plate (1) being detachably connected to the tail pipe bracket, the support plate (1) being provided with a fixing component, the fixing component being used to automatically adjust the fixing force according to the wind speed of the cooling air and the vibration intensity of the test bench during the test process, so as to fix the support plate (1) on the test bench.

2. The environmental warehouse waste tail pipe system according to claim 1, characterized in that: The fixing assembly comprises a plurality of fixing suction cups mounted on the support plate (1), and a negative pressure assembly (12) for evacuating the inside of the fixing suction cups, each fixing suction cup having a suction port, each suction port being connected to a suction pipe, and all the suction pipes being connected to the suction port of the negative pressure assembly (12).

3. The environmental warehouse waste tail pipe system according to claim 2, characterized in that: The invention also comprises a collection component, the collection component at least comprising a vibration sensor installed on the test bench and a wind speed sensor installed on the side of the heat dissipation fan facing the tail pipe bracket; the negative pressure component (12) comprises a vacuum module and a calculation module, the calculation module is electrically connected to the collection component, the calculation module is used to calculate the target vacuum degree of the vacuum module according to the real-time reading of the vibration sensor and the real-time reading of the wind speed sensor, and the vacuum module is used to vacuum each of the fixed suction cups according to the target vacuum degree.

4. The environmental warehouse waste tail pipe system according to claim 3, characterized in that: The support plate (1) has a mounting area at its center, the mounting area has a plurality of mounting holes (7), the mounting holes (7) are used to mount the tail pipe bracket, the fixing assembly is arranged in a remaining area, the remaining area is an area on the support plate (1) other than the mounting area, and the fixing suction cups are evenly distributed in the remaining area.

5. The environmental warehouse waste tail pipe system according to claim 3, characterized in that: A plurality of movable wheels with a self-locking function are provided on the back of the support plate (1).

6. The environmental warehouse waste tail pipe system according to claim 3, characterized in that: The vacuum pumping module is provided with a vacuum state display (13), and the vacuum state display (13) is used to display the target vacuum degree and the actual vacuum degree in each of the fixed suction cups.

7. The environmental warehouse waste tail pipe system according to claim 3, characterized in that: A movable handle (2) is rotatably connected to the support plate (1); the direction of the rotation axis of the movable handle (2) is a first direction; and the first direction is a thickness direction of the support plate (1).

8. A control method for an environmental bin exhaust tail pipe system, used to control the fixing assembly of the environmental bin exhaust tail pipe system according to any one of claims 3 to 7; characterized in that: The following steps are involved: Setting an initial vacuum degree, and upon receiving a test start signal, controlling each of the fixed suction cups to reach the initial vacuum degree; The initial vacuum degree is greater than the target vacuum degree; At intervals of a first preset time length, wind speed information and vibration information are acquired in real time, wherein the wind speed information is a reading of the wind speed sensor, and the vibration information is a reading of the vibration sensor; According to the wind speed information and the vibration information, a required vacuum degree is obtained, wherein the required vacuum degree is a vacuum degree corresponding to a force provided by the fixing assembly that is sufficient to ensure that the tail pipe bracket and the support plate (1) are stably fixed on the test bench in order to resist the interference force generated by the wind speed of the cooling fan and the vibration of the test bench during the test; Obtaining the number of suction cups of the fixed suction cup contained in the fixed assembly, and obtaining a target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree; if the difference between the initial vacuum degree and the target vacuum degree is less than or equal to the first preset threshold, the initial vacuum degree is kept unchanged.

9. The control method of the waste tail pipe system of the environmental warehouse according to claim 8, characterized in that: The setting of the initial vacuum degree specifically comprises the following steps: Obtaining a test type, and obtaining, according to the test type, a maximum wind speed of the cooling fan and a maximum vibration intensity of the test bench during the test; The initial vacuum degree is obtained according to the maximum wind speed and the maximum vibration intensity.

10. The control method of the waste tail pipe system of the environmental warehouse according to claim 8, characterized in that: After obtaining the target vacuum degree of each suction cup according to the number of suction cups and the required vacuum degree, the following steps are also included: Get the cumulative duration of the test corresponding to the current moment; If the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, controlling the vacuum pumping module to reduce the initial vacuum degree to the target vacuum degree specifically includes the following steps: If the cumulative test duration is greater than or equal to a first preset duration, and the difference between the initial vacuum degree and the target vacuum degree is greater than a first preset threshold, the vacuum pumping module is controlled to reduce the initial vacuum degree to the target vacuum degree.

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