Height adjusting device and method of range hood noise testing system and readable storage medium

Abstract

The invention provides a height adjusting device of a range hood noise testing system, the range hood noise testing system comprises an adjusted cross beam, the height adjusting device comprises a signal receiving device, an actuator, a distance measuring device and a controller, the signal receiving device is used for receiving the preset height of a tested range hood; the actuator is connected with the adjusted cross beam; the distance measuring device is used for measuring the actual height of the adjusted cross beam; the controller is in communication connection with the signal receiving device, the actuator and the distance measuring device, and the controller is configured to generate a control instruction for controlling the actuator to move according to the preset height of the detected range hood and the actual height of the adjusted cross beam. And the actuator executes the control instruction to adjust the height of the adjusted cross beam to a target height corresponding to the preset height of the detected range hood. According to the invention, the height of the adjusted cross beam can be automatically adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of range hood noise testing, and in particular to a height adjustment device, method and readable storage medium of a range hood noise testing system. Background Art

[0002] A range hood, also known as a range hood, is a kitchen appliance that purifies the kitchen environment. Installed above the kitchen stove, it quickly extracts stovetop waste and harmful cooking fumes, exhausting them outdoors. It also condenses and collects the fumes, reducing pollution, purifying the air, and providing safety features like anti-poisoning and explosion-proofing.

[0003] However, range hoods generate noise during operation, and if the noise is too loud, it will affect the user experience. Therefore, range hoods undergo rigorous noise testing before leaving the factory, and are only released to the market if they meet the noise standards.

[0004] Currently, noise testing of range hoods is typically performed in a semi-anechoic chamber. This chamber is equipped with a support device to support the range hood under test. To accommodate noise testing requirements for range hoods of varying sizes, the support device's height must be manually adjusted. However, manual adjustment results in significant positioning errors, long adjustment times, wasted testing time, and low efficiency, making it unsuitable for intelligent production.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to at least overcome some of the shortcomings of the existing technology and provide a height adjustment device for a range hood noise testing system. A controller is used to generate control instructions for controlling the movement of an actuator based on the preset height of the range hood under test and the actual height of the adjusted beam, so that the actuator executes the control instructions to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood under test, thereby realizing automatic adjustment of the height of the adjusted beam.

[0007] To solve the above technical problems, the first aspect of the present invention is to provide a height adjustment device for a range hood noise testing system, wherein the range hood noise testing system includes an adjustable crossbeam, and the height adjustment device includes:

[0008] A signal receiving device for receiving the preset height of the range hood under test;

[0009] an actuator connected to the adjusted beam;

[0010] a distance measuring device for measuring the actual height of the adjusted crossbeam; and

[0011] A controller is communicatively connected to the signal receiving device, the actuator and the distance measuring device. The controller is configured to generate a control instruction for controlling the movement of the actuator based on the preset height of the range hood being tested and the actual height of the adjusted beam, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood being tested.

[0012] In some embodiments, the actuator includes any one of a mechanically driven actuator, a pneumatically driven actuator, or a hydraulically driven actuator.

[0013] In some embodiments, the distance measuring device includes an infrared rangefinder or a laser rangefinder.

[0014] In some embodiments, the height adjustment device of the range hood noise testing system further includes:

[0015] The intelligent terminal is communicatively connected with the signal receiving device and is used to send the preset height to the signal receiving device.

[0016] A second aspect of the present invention is to provide a method for adjusting the height of a range hood noise test system, which is implemented in the height adjustment device of the range hood noise test system described above. The method comprises:

[0017] Receive the preset height of the range hood under test through a signal receiving device;

[0018] Measuring the actual height of the adjusted beam by a distance measuring device; and

[0019] A control instruction for controlling the movement of the actuator is generated according to the preset height and the actual height, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the tested range hood.

[0020] In some embodiments, the step of generating a control instruction for controlling the movement of an actuator based on the preset height and the actual height, so that the actuator executes the control instruction to adjust the height of the adjustable crossbeam to a target height corresponding to the preset height of the range hood under test, includes:

[0021] The following steps are executed in a loop:

[0022] generating a control instruction for controlling the movement of the actuator according to the preset height and the actual height;

[0023] The actuator executes the control instruction to adjust the height of the adjusted beam to the target height;

[0024] Measuring the actual height of the adjusted beam again by a distance measuring device;

[0025] A control instruction for controlling the movement of the actuator is generated again according to the preset height and the actual height measured again, until the difference between the actual height measured again and the target height meets a preset condition.

[0026] In some embodiments, the adjustable crossbeam includes a first adjustable crossbeam and a second adjustable crossbeam, the first adjustable crossbeam having a first target height corresponding to a preset height of the tested range hood, and the second adjustable crossbeam having a second target height corresponding to the preset height of the tested range hood;

[0027] The step of determining that the difference between the actual height measured again and the target height satisfies a preset condition comprises:

[0028] The difference between the first actual height of the first adjusted beam measured again and the first target height meets the first preset condition, and the difference between the actual height difference between the first adjusted beam and the second adjusted beam measured again and the preset height of the range hood being tested meets the second preset condition.

[0029] In some embodiments, the step of receiving the preset height of the tested range hood by a signal receiving device includes:

[0030] The preset height of the range hood under test sent from the smart terminal is received by the signal receiving device.

[0031] A third aspect of the present invention is to provide a range hood noise testing system, comprising a height adjustment device according to the above-mentioned range hood noise testing system.

[0032] A fourth aspect of the present invention is to provide a readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the height adjustment method of the range hood noise test system described above is implemented.

[0033] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0034] (1) The height adjustment device of the range hood noise test system provided by the present invention utilizes a controller to generate a control instruction for controlling the movement of an actuator according to the preset height of the range hood under test and the actual height of the adjusted beam, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood under test, thereby realizing automatic adjustment of the height of the adjusted beam and improving adjustment accuracy and test efficiency.

[0035] (2) The height adjustment method of the range hood noise test system provided by the present invention uses a distance measuring device to measure the actual height of the adjusted beam at the current moment, and feeds back the measurement result to the controller. The controller continuously adjusts the height of the adjusted beam according to the feedback result to match the preset height of the range hood being tested, thereby achieving the purpose of small positioning error of the adjusted beam and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0037] Figure 1 2 is a schematic structural diagram of a height adjustment device of a range hood noise testing system according to an exemplary embodiment of the present invention;

[0038] Figure 2 2 is a schematic structural diagram of a test fixture for a range hood noise test system according to an exemplary embodiment of the present invention;

[0039] Figure 3 is a flow chart of a method for adjusting the height of a range hood noise testing system according to an exemplary embodiment of the present invention;

[0040] Figure 4 is a schematic structural diagram of an electronic device provided according to an exemplary embodiment of the present invention;

[0041] In the figure: 100, height adjustment device; 110, controller; 120, signal receiving device; 130, actuator; 140, distance measuring device; 150, intelligent terminal;

[0042] 200, test tool; 210, first adjusted beam; 220, second adjusted beam;

[0043] 400, electronic device; 401, processor; 402, memory; 403, bus; 404, communication interface.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0048] Figure 1 A height adjustment device 100 for a range hood noise testing system according to an exemplary embodiment of the present invention is shown. The range hood noise testing system includes a beam for supporting the range hood under test. Because the range hood noise testing system needs to accommodate noise testing requirements for range hoods of varying sizes, the height of the beam supporting the range hood under test is adjustable. The adjustable beam referred to herein refers to the beam supporting the range hood under test.

[0049] like Figure 1As shown, the height adjustment device 100 includes a signal receiving device 120, an actuator 130, a distance measuring device 140, and a controller 110. The signal receiving device 120 is used to receive the preset height of the range hood being measured. As an example, the signal receiving device 120 can be a device that allows a user to manually input the preset height of the range hood being measured. The signal receiving device 120 can also be a device that wirelessly receives the preset height of the range hood being measured from a smart terminal 150. The smart terminal 150 and the signal receiving device 120 are connected to each other using a wireless transmission method such as WLAN, WIFI, or Bluetooth. The smart terminal 150 can be a smartphone, iPad, etc. The actuator 130 is connected to the adjustable beam. The distance measuring device 140 is used to measure the actual height of the adjustable beam. Optionally, the distance measuring device 140 includes an infrared rangefinder or a laser rangefinder. The controller 110 is communicatively connected to the signal receiving device 120, the actuator 130 and the distance measuring device 140. The controller 110 is configured to generate a control instruction for controlling the movement of the actuator 130 based on the preset height of the range hood being tested and the actual height of the adjusted beam, so that the actuator 130 executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood being tested.

[0050] Figure 2 The structure of a test fixture 200 of a range hood noise test system according to an exemplary embodiment of the present invention is shown. The range hood noise test system is set in a simulated noise room of a semi-anechoic room. The range hood noise test system includes Figure 1 The height adjustment device 100 shown and Figure 2 The test fixture 200 is shown. The aforementioned adjustable beam is part of the test fixture 200. As an example, the adjustable beam includes a first adjustable beam 210 and a second adjustable beam 220, upon which the upper and lower ends of the range hood under test can be mounted. The first adjustable beam 210 and the second adjustable beam 220 are respectively connected to corresponding actuators 130 to adjust their respective heights. The actuators 130 include any one of a mechanically driven actuator 130, a pneumatically driven actuator 130, or a hydraulically driven actuator 130.

[0051] As an example, the mechanical actuator 130 may include components such as a motor and a chain, wherein the chain is connected to the first adjustable beam 210 or the second adjustable beam 220, and the motor drives the chain to move, thereby adjusting the height of the first adjustable beam 210 or the second adjustable beam 220 to the target height. Alternatively, the mechanical actuator 130 may include components such as a motor and a screw, wherein the screw is connected to the first adjustable beam 210 or the second adjustable beam 220, and the motor drives the screw to move, thereby adjusting the height of the first adjustable beam 210 or the second adjustable beam 220 to the target height. The pneumatic actuator 130 may include components such as a cylinder and a piston rod, wherein the piston rod is connected to the first adjustable beam 210 or the second adjustable beam 220, and the piston rod is driven by changes in air pressure within the cylinder to move, thereby adjusting the height of the first adjustable beam 210 or the second adjustable beam 220 to the target height. The hydraulically driven actuator 130 may include components such as a hydraulic cylinder and a piston rod. The piston rod is connected to the first adjusted beam 210 or the second adjusted beam 220. The change in liquid pressure in the hydraulic cylinder is used to drive the piston rod to move, thereby adjusting the height of the first adjusted beam 210 or the second adjusted beam 220 to the target height.

[0052] Figure 2 The flowchart of a method for adjusting the height of a range hood noise testing system according to an exemplary embodiment of the present invention is shown.

[0053] like Figure 2 As shown, the execution of the height adjustment method 300 includes the following steps:

[0054] S310, receiving the preset height of the range hood to be tested through a signal receiving device;

[0055] S320, measuring the actual height of the adjusted beam by a distance measuring device; and

[0056] S330: Generate a control instruction for controlling the movement of an actuator according to the preset height and the actual height, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood being tested.

[0057] It should be understood that the steps shown in the height adjustment method 300 are not exclusive, and the height adjustment method 300 may also include additional steps not shown and / or may omit the steps shown, and the scope of the present invention is not limited in this respect. It should be noted that the embodiments of the present invention and the features in the embodiments may be combined with each other unless there is a conflict. In addition, unless explicitly limited or inconsistent with the context, the specific steps included in the method described in the present invention are not necessarily limited to the order described, but may be executed in any order or in parallel. Figures 1 to 3Steps S310 to S330 are described in detail.

[0058] Specifically, in step S310, the signal receiving device 120 receives the preset height of the range hood under test, either manually or from the smart terminal 150. In step S320, the distance measuring device 140 measures the current actual height of the adjustable beam. In step S330, the controller 110 generates a control instruction for controlling the movement of the actuator 130 based on the preset height and the actual height, and transmits the control instruction to the actuator 130. Upon receiving the control instruction, the actuator 130 executes the control instruction to adjust the height of the adjustable beam to the target height corresponding to the preset height of the range hood under test.

[0059] In the above scheme, the controller 110 is used to generate a control instruction to control the movement of the actuator 130 according to the preset height of the range hood under test and the actual height of the adjusted beam, so that the actuator 130 executes the control instruction to adjust the height of the adjusted beam to the target height corresponding to the preset height of the range hood under test, thereby realizing automatic adjustment of the height of the adjusted beam and improving the adjustment accuracy and test efficiency.

[0060] In some embodiments, step S330 includes:

[0061] The following steps are executed in a loop:

[0062] S331, generating a control instruction for controlling the movement of an actuator according to the preset height and the actual height;

[0063] S332: The actuator executes the control instruction to adjust the height of the adjusted beam to the target height;

[0064] S333, measuring the actual height of the adjusted beam again by using a distance measuring device;

[0065] S334 , generating a control instruction for controlling the movement of the actuator again according to the preset height and the actual height measured again, until the difference between the actual height measured again and the target height meets a preset condition.

[0066] The following describes steps S331 to S334 by taking the adjustment of the height of the first adjusted beam 210 and the second adjusted beam 220 as an example.

[0067] After the controller 110 receives the preset height h of the range hood under test, it can determine the first target height H1 of the first adjusted beam 210 and the second target height H2 of the second adjusted beam 220. According to the above content, the upper and lower ends of the range hood under test are respectively mounted on the first adjusted beam 210 and the second adjusted beam 220. Therefore, theoretically speaking, the difference between the first target height of the first adjusted beam 210 and the second target height of the second adjusted beam 220 should be consistent with the preset height h of the range hood under test.

[0068] In step S331, the controller 110 determines control instructions for controlling the movement of the corresponding actuators 130 based on the preset height being measured and the current heights of the first and second adjustable beams 210, 220, and sends the control instructions to the corresponding actuators 130. In step S332, the two actuators 130 respectively execute their received control instructions, adjusting the heights of the first and second adjustable beams 210, 220 to the first and second target heights. In step S333, the actual heights of the first and second adjustable beams 210, 220 after step S332 are measured using the distance measuring device 140. In step S334, if the controller 110 determines that the difference between the actual heights of the first adjusted beam 210 and the second adjusted beam 220 measured in step S333 and their respective target heights meets the preset conditions, it means that the heights of the first adjusted beam 210 and the second adjusted beam 220 are appropriate at this time, and the range hood under test can be mounted on the first adjusted beam 210 and the second adjusted beam 220 to start the noise test. If the controller 110 determines that the difference between the actual heights of the first adjusted beam 210 and the second adjusted beam 220 measured in step S333 and their respective target heights does not meet the preset conditions, it means that the heights of the first adjusted beam 210 and the second adjusted beam 220 are not appropriate at this time, and the heights of the first adjusted beam 210 and the second adjusted beam 220 need to be readjusted. Steps S331 to S334 are executed in a loop until the controller 110 determines that the differences between the actual heights of the first adjusted beam 210 and the second adjusted beam 220 measured in step S333 and their respective target heights meet a preset condition.

[0069] The first target height and the second target height can be determined by comprehensively considering factors such as the preset height of the range hood being measured, the distance between the distance measuring device 140 and the first adjusted crossbeam 210 and the second adjusted crossbeam 220 , and the like.

[0070] In some embodiments, the step of the difference between the actual height measured again and the target height meeting the preset condition in step S333 includes: the difference between the first actual height of the first adjusted beam 210 measured again and the first target height meets the first preset condition, and the difference between the actual height difference between the first adjusted beam 210 and the second adjusted beam 220 measured again and the preset height of the range hood being tested meets the second preset condition.

[0071] As an example, when the difference between the first actual height of the first adjusted beam 210 measured again and the first target height is less than or equal to the first difference threshold, and the difference between the actual height difference between the first adjusted beam 210 and the second adjusted beam 220 measured again and the preset height of the range hood being tested is less than or equal to the second difference threshold, it is considered that the difference between the first actual height of the first adjusted beam 210 measured again and the first target height meets the first preset condition, and the difference between the actual height difference between the first adjusted beam 210 and the second adjusted beam 220 measured again and the preset height of the range hood being tested meets the second preset condition.

[0072] The first difference threshold and the second difference threshold can be selected according to the measurement accuracy of the distance measuring device 140. As an example, the first difference threshold and the second difference threshold are in the range of 5 mm to 15 mm. Optionally, the first difference threshold and the second difference threshold are 10 mm.

[0073] Figure 4 The structure of an electronic device provided according to an exemplary embodiment of the present invention is shown.

[0074] like Figure 4 As shown, electronic device 400 includes a processor 401 and a memory 402. Processor 401 is connected to the vibration sensor system 120 and receives a signal indicating that the vibration detection pulse has been triggered. Memory 402 is in communication with processor 401. Memory 402 stores a program executable by the processor. When the program is executed by the processor, processor 401 is capable of executing the height adjustment method 300 for the range hood noise test system described above. As an example, the electronic device may be controller 110 of the height adjustment device 100.

[0075] Figure 4 The electronic device 400 shown further includes a bus 403 and a communication interface 404 , and the processor 401 , the communication interface 404 and the memory 402 are connected via the bus 403 .

[0076] The memory 402 may include a high-speed random access memory (RAM), and may also include a non-volatile memory 402 (Non-Volatile Memory), such as at least one disk storage. The communication connection between the system network element and at least one other network element is achieved through at least one communication interface 404 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 403 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus 403 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one bidirectional arrow is used in the figure, but it does not mean that there is only one bus 403 or one type of bus 403.

[0077] Processor 401 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in processor 401 or software instructions. The above processor 401 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. A general-purpose processor may be a microprocessor, or processor 401 may be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in memory 402, and processor 401 reads information in memory 402 and, in conjunction with its hardware, completes the steps of the method of the aforementioned embodiment.

[0078] An exemplary embodiment of the present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is called and executed by the processor 401, the computer executable instructions prompt the processor 401 to implement the height adjustment method 300 of the above-mentioned range hood noise testing system. For specific implementation, please refer to the method embodiment and will not be repeated here.

[0079] The height adjustment method 300 of the range hood noise testing system and the computer program product of the electronic device 400 provided in the embodiments of the present invention include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the method in the previous method embodiment. For specific implementation, please refer to the method embodiment and will not be repeated here.

[0080] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device and / or eccentricity control device can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0081] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A height adjustment device for a range hood noise test system, the range hood noise test system comprising an adjustable crossbeam, characterized in that: include: A signal receiving device for receiving the preset height of the range hood under test; an actuator connected to the adjusted beam; a distance measuring device for measuring the actual height of the adjusted crossbeam; as well as A controller is communicatively connected to the signal receiving device, the actuator and the distance measuring device. The controller is configured to generate a control instruction for controlling the movement of the actuator based on the preset height of the range hood being tested and the actual height of the adjusted beam, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the range hood being tested.

2. The height adjustment device of the range hood noise testing system according to claim 1, characterized in that: The actuator includes any one of a mechanically driven actuator, a pneumatically driven actuator, or a hydraulically driven actuator.

3. The height adjustment device of the range hood noise testing system according to claim 1, characterized in that: The distance measuring device includes an infrared rangefinder or a laser rangefinder.

4. The height adjustment device of the range hood noise testing system according to any one of claims 1 to 3, characterized in that: Also includes: The intelligent terminal is communicatively connected with the signal receiving device and is used to send the preset height to the signal receiving device.

5. A method for adjusting the height of a range hood noise test system, implemented in the height adjustment device of the range hood noise test system according to any one of claims 1 to 4, characterized in that: The height adjustment method comprises: Receive the preset height of the range hood under test through a signal receiving device; Measuring the actual height of the adjusted beam by a distance measuring device; and A control instruction for controlling the movement of the actuator is generated according to the preset height and the actual height, so that the actuator executes the control instruction to adjust the height of the adjusted beam to a target height corresponding to the preset height of the tested range hood.

6. The height adjustment method of the range hood noise testing system according to claim 5, characterized in that: The step of generating a control instruction for controlling the movement of an actuator according to the preset height and the actual height so that the actuator executes the control instruction to adjust the height of the adjustable crossbeam to a target height corresponding to the preset height of the range hood under test includes: The following steps are executed in a loop: generating a control instruction for controlling the movement of the actuator according to the preset height and the actual height; The actuator executes the control instruction to adjust the height of the adjusted beam to the target height; Measuring the actual height of the adjusted beam again by a distance measuring device; A control instruction for controlling the movement of the actuator is generated again according to the preset height and the actual height measured again, until the difference between the actual height measured again and the target height meets a preset condition.

7. The height adjustment method of the range hood noise testing system according to claim 6, characterized in that: The adjustable crossbeam includes a first adjustable crossbeam and a second adjustable crossbeam, the first adjustable crossbeam has a first target height corresponding to a preset height of the range hood under test, and the second adjustable crossbeam has a second target height corresponding to the preset height of the range hood under test; The step of determining that the difference between the actual height measured again and the target height satisfies a preset condition comprises: The difference between the first actual height of the first adjusted beam measured again and the first target height meets the first preset condition, and the difference between the actual height difference between the first adjusted beam and the second adjusted beam measured again and the preset height of the range hood being tested meets the second preset condition.

8. The height adjustment method of a range hood noise testing system according to any one of claims 5 to 7, characterized in that: The step of receiving the preset height of the range hood to be tested by the signal receiving device includes: The preset height of the range hood under test sent from the smart terminal is received by the signal receiving device.

9. A range hood noise testing system, characterized in that: The device comprises a height adjustment device for a range hood noise testing system according to any one of claims 1 to 4.

10. A readable storage medium, characterized in that: A computer program is stored on the readable storage medium, and when the computer program is executed by the processor, the height adjustment method of the range hood noise testing system according to any one of claims 5 to 8 is implemented.

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