Hair dryer testing system and testing method thereof

Abstract

The application discloses a hair dryer testing system and a testing method thereof, which are used for testing a hair dryer with an air outlet, a handle part, a first button and a second button arranged on the handle part, wherein the hair dryer testing system comprises a base, a fixing unit including a first limiting assembly and a second limiting assembly, the first limiting assembly including a limiting seat arranged on the base and provided with an opening for inserting the hair dryer, and the second limiting assembly being used for limiting the handle part, a triggering unit including a first triggering assembly used for pressing the first button and a second triggering assembly used for pressing the second button, a testing unit used for acquiring the humidity, temperature and air speed of the airflow entering the hair dryer, and a controller electrically connected with the testing unit and the hair dryer respectively. The performance of the hair dryer can be automatically measured.

Description

Technical Field

[0001] This invention relates to the field of intelligent measuring instruments and equipment technology, and in particular to a hair dryer testing system and its testing method. Background Technology

[0002] Hair dryers, as a common garden care tool, are widely used in lawn maintenance, leaf removal, and site drying. When exported to overseas markets such as Saudi Arabia, Europe, and Southeast Asia, lawn dryers face vastly different environmental challenges, with significant variations in temperature and humidity. Existing performance testing methods for lawn dryers have significant limitations, typically fixing the testing environment to standard laboratory conditions of normal temperature and humidity (20℃~25℃, 40%~60%RH). This testing method can only verify basic factory specifications such as airflow velocity, completely severing the dynamic relationship between product performance and environmental factors. It lacks effective means to evaluate the comprehensive performance of the hair dryer under different temperature and humidity conditions, making it difficult to guarantee the product's reliability in complex climatic environments. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a hair dryer testing system capable of automatically measuring the performance of hair dryers.

[0004] The present invention also proposes a test method for having the above-mentioned hair dryer test system.

[0005] A hair dryer testing system according to a first aspect of the present invention is used to test a hair dryer having an air outlet, a handle, and a first button and a second button disposed on the handle, the hair dryer testing system comprising: Base; The fixing unit includes a first limiting component and a second limiting component. The first limiting component includes a limiting seat, which is disposed on the base and has an opening for inserting the blower. The second limiting component is used to limit the handle portion. The triggering unit includes a first triggering component for pressing the first button and a second triggering component for pressing the second button; The testing unit includes a wind speed sensor, a temperature sensor, and a first humidity sensor. The wind speed sensor is disposed inside the limiting seat, with its detection end extending to the opening, for collecting the wind speed at the air outlet. The temperature sensor is disposed on the side wall of the limiting seat and located at the edge of the opening, for fitting against the outer wall of the air outlet when the hair dryer is inserted, to detect the surface temperature change data of the air outlet under sudden environmental changes. The first humidity sensor is disposed on the air inlet side of the hair dryer for acquiring the humidity of the airflow entering the hair dryer. The controller is electrically connected to both the test unit and the hair dryer.

[0006] A hair dryer testing system according to an embodiment of the present invention has at least the following beneficial effects: By setting a base and a fixing unit including a first limiting component and a second limiting component, the main body and handle of the hair dryer can be effectively limited, ensuring that the hair dryer always maintains a preset posture during the test, avoiding deviation of the test position due to manual handling or shaking, thereby improving the stability and consistency of the test process; the triggering unit includes a first triggering component and a second triggering component for pressing the first button and the second button respectively, realizing automated simulation operation of different function levels of the hair dryer, eliminating the need for manual switching, improving test efficiency, and ensuring that the force and stroke of each press are consistent, reducing the uncertainty caused by manual operation; the test unit sets the wind speed sensor inside the limiting base and the detection end extends to the opening, enabling accurate... The system accurately collects real-time wind speed at the air outlet; a temperature sensor is located on the side wall of the limiting seat at the edge of the opening, fitting against the outer wall of the air outlet when the hair dryer is inserted, effectively detecting surface temperature changes at the air outlet under sudden environmental changes, providing a reliable basis for evaluating the temperature response characteristics of the hair dryer; a first humidity sensor is located on the air inlet side of the hair dryer, acquiring the humidity of the airflow entering the hair dryer, which is beneficial for analyzing the impact of inlet air humidity on the working performance of the hair dryer, realizing multi-dimensional comprehensive testing of the hair dryer's wind speed, temperature, and humidity-related performance; the controller is electrically connected to both the test unit and the hair dryer, enabling real-time acquisition of test data and synchronous control of the hair dryer's working status, achieving automation and intelligence in the testing process, improving the accuracy and efficiency of test data, and providing reliable technical support for the performance evaluation and quality inspection of the hair dryer.

[0007] According to some embodiments of the present invention, the side wall of the limiting seat is provided with at least two sensor mounting holes, the sensor mounting holes are spaced apart along the circumferential direction of the opening, and each of the sensor mounting holes is provided with a temperature sensor. The multiple temperature sensors are used to fit against multiple different positions on the outer wall of the air outlet when the hair dryer is inserted, so as to detect the temperature distribution data of the air outlet along the circumferential direction.

[0008] According to some embodiments of the present invention, the testing unit further includes a second humidity sensor, which is disposed inside the limiting seat and located on one side of the wind speed sensor. The detection end of the second humidity sensor extends to the air outlet of the hair dryer to obtain the humidity of the airflow inside the air outlet.

[0009] According to some embodiments of the present invention, the second limiting component further includes a first limiting post, a second limiting post, and an adjustment mechanism. The adjustment mechanism is disposed between the base and the first limiting post and / or the second limiting post, and is used to adjust the interval distance between the first limiting post and the second limiting post so that the second limiting component can adapt to hair dryers of different sizes. The top of the first limiting post and the second limiting post are provided with guide rounded corners, which are used to form a guide engagement with the outer contour of the handle of the hair dryer.

[0010] According to some embodiments of the present invention, the triggering unit further includes a moving component disposed below the first triggering component and the second triggering component. The moving component includes a sliding seat and a driving member. The first triggering component includes a first triggering cylinder, and the second triggering component includes a second triggering cylinder. Both the first triggering cylinder and the second triggering cylinder are fixedly mounted on the sliding seat. The driving member is convexly connected to the sliding seat and is used to drive the sliding seat to reciprocate along the longitudinal direction of the base, so as to drive the first triggering cylinder and the second triggering cylinder to move synchronously. The controller is also electrically connected to the driving member and is used to control the action of the driving member according to the model information of the hair dryer, so as to drive the first triggering cylinder and the second triggering cylinder to move to the triggering position corresponding to the first button and the second button.

[0011] According to some embodiments of the present invention, the base is provided with a plurality of ventilation holes, the ventilation holes penetrating the upper surface and the lower surface of the base.

[0012] According to some embodiments of the present invention, the first limiting component further includes a locking cylinder, the limiting seat has a locking through hole, the locking cylinder is disposed on one side of the locking through hole, and the piston rod of the locking cylinder can extend and retract through the locking through hole for locking the hair dryer inserted at the opening onto the limiting seat.

[0013] According to some embodiments of the present invention, a protective housing is further provided outside the base, the protective housing having a viewing window on one side and a movable door for replacing the hair dryer on the other side; the top of the base is open to form a heat dissipation channel, and a protective light grating is provided at the movable door, the protective light grating being electrically connected to the controller for controlling the hair dryer to stop working when foreign object intrusion is detected.

[0014] According to some embodiments of the present invention, the first limiting component further includes a sealing sleeve and a clamping member. The sealing sleeve is fitted onto the opening edge of the limiting seat, and the inner wall of the sealing sleeve is provided with an elastic sealing ring edge for fitting the outer wall of the air outlet. The clamping member is disposed on the outer side of the sealing sleeve for adjusting the diameter of the sealing sleeve to adapt to the air outlet of different sizes.

[0015] The testing method according to a second aspect of the present invention further includes an environmental simulation unit disposed outside the base for adjusting the temperature and humidity of the environment in which the base is located; the testing unit further includes a second humidity sensor; the testing method includes the following steps: Power supply preparation steps: Remove the lithium battery from the hair dryer, electrically connect the external adjustable power supply to the power supply terminal of the hair dryer, supply test power to the hair dryer through the external adjustable power supply, and record the power supply voltage and current values ​​of the external adjustable power supply. Programming steps: The controller communicates with the ECU of the blower through the communication interface, programs the test program to the ECU, and returns a successful programming signal to the controller after programming is completed; Environmental preparation steps: The controller controls the environmental simulation unit to adjust the environment where the base is located to a first ambient temperature value and a first ambient humidity value, and maintains it for a first preset time. Dew point calculation steps: The controller acquires the first ambient temperature value and the first ambient humidity value, and calculates the dew point temperature under the current ambient conditions; First detection step: The controller controls the fixing unit to lock the hair dryer on the limiting seat, controls the first trigger component and the second trigger component to press the first button and the second button respectively to start the hair dryer, the wind speed sensor collects the first wind speed data, the temperature sensor collects the first temperature data, the first humidity sensor collects the first air inlet humidity data, and the second humidity sensor collects the first air outlet humidity data. First condensation judgment step: The controller compares the first temperature data with the dew point temperature. If the first temperature data is lower than or equal to the dew point temperature, and the difference between the first outlet humidity data and the first inlet humidity data exceeds the first preset difference threshold, it is determined that there is a risk of condensation inside the hair dryer, and a first condensation alarm signal is generated. Environment switching steps: The controller controls the environment simulation unit to switch the environment where the base is located from the first ambient temperature value and the first ambient humidity value to the second ambient temperature value and the second ambient humidity value. The absolute value of the temperature difference between the second ambient temperature value and the first ambient temperature value is not less than 15℃, and the absolute value of the humidity difference between the second ambient humidity value and the first ambient humidity value is not less than 30%RH. Second detection step: After the environmental simulation unit is switched, the wind speed sensor collects the second wind speed data, the temperature sensor collects the second temperature data, the first humidity sensor collects the second inlet humidity data, and the second humidity sensor collects the second outlet humidity data. Second condensation judgment step: The controller compares the second temperature data with the dew point temperature under the current environmental conditions. If the second temperature data is lower than or equal to the current dew point temperature, and the difference between the second outlet humidity data and the second inlet humidity data exceeds the second preset difference threshold, it is determined that the blower generates condensate water inside after the environment is switched, and a second condensation alarm signal is generated. Comparison and judgment steps: The controller calculates the rate of change of wind speed between the first wind speed data and the second wind speed data, and the rate of change of temperature between the first temperature data and the second temperature data. If the rate of change of wind speed exceeds the first preset threshold or the rate of change of temperature exceeds the second preset threshold, the hair dryer is judged to be unqualified under the sudden change of environmental conditions. Stability recovery test steps: The controller controls the environmental simulation unit to restore the environment where the base is located to the first ambient temperature value and the first ambient humidity value and maintain it for a second preset time. Then, the wind speed sensor collects the third wind speed data, the temperature sensor collects the third temperature data, and the second humidity sensor collects the third outlet humidity data. The controller compares the third wind speed data with the first wind speed data. If the difference exceeds the third preset threshold, it is determined that the performance of the hair dryer cannot be stabilized after the environment is restored, and the test is unqualified. Condensation dissipation judgment step: The controller compares the third outlet humidity data with the first outlet humidity data. If the difference between the two exceeds the fourth preset threshold, it is determined that the condensate inside the hair dryer has not completely dissipated and the test is unqualified. Reset procedure: After the test is completed, the controller controls the first trigger component and the second trigger component to reset, and controls the fixing unit to loosen.

[0016] The testing method according to embodiments of the present invention has at least the following beneficial effects: Through centralized control of the environmental simulation unit, fixing unit, triggering unit, and various sensors by the controller, the testing method can automatically perform power preparation, program burning, environmental adjustment, data acquisition, judgment analysis, and reset operations without manual intervention, significantly improving testing efficiency. It also eliminates errors introduced by manual operation, ensuring the consistency and repeatability of test results. The testing method incorporates drastic environmental switching steps with an absolute temperature difference of not less than 15°C and an absolute humidity difference of not less than 30%RH, simulating the sudden temperature and humidity changes of a hair dryer in real, harsh usage scenarios such as moving from a cold outdoor environment to a humid bathroom. Based on this, the second detection step and the second condensation judgment step effectively assess whether condensation occurs inside the hair dryer after a sudden environmental change, providing a reliable verification basis for the product's anti-condensation design. The controller calculates the dew point temperature based on the current ambient temperature and humidity, compares the outlet surface temperature with the dew point temperature, and performs a dual judgment based on the humidity difference between the inlet and outlet air, enabling scientific and accurate identification of whether there is a risk of condensation inside the hair dryer. Compared to single humidity or single temperature determination methods, this method significantly improves the accuracy and reliability of condensation warning. By comparing the determination steps, calculating the rate of change of wind speed and temperature before and after the environmental change, and determining whether the test is qualified according to the preset threshold, it can evaluate the output stability and temperature control response capability of the hair dryer under sudden environmental changes, making up for the shortcomings of traditional steady-state testing and more closely reflecting the transient change characteristics in actual use.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a hair dryer testing system according to an embodiment of the present invention; Figure 2 This is one of the internal schematic diagrams of a hair dryer testing system according to an embodiment of the present invention; Figure 3 This is a second internal schematic diagram of a hair dryer testing system according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the fixing unit and the triggering unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a hair dryer according to an embodiment of the present invention.

[0019] Reference numerals: Protective housing 100; Viewing window 110; Blower 120; Trigger unit 130; Vent 140; First limit post 150; Second limit post 160; Limit seat 170; Locking cylinder 180; Moving component 190; First trigger component 200; Second trigger component 210; First button 220; Second button 230; Air outlet 240; Air inlet side 250; Base 260. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this invention in conjunction with the specific content of the technical solution. In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figures 1 to 5 A hair dryer testing system is provided for testing a hair dryer 120 having an air outlet 240, a handle, and a first button 220 and a second button 230 disposed on the handle. The hair dryer 120 testing system includes: Base plate 260; The fixing unit includes a first limiting component and a second limiting component. The first limiting component includes a limiting seat 170, which is disposed on the base 260 and has an opening for inserting the blower 120. The second limiting component is used to limit the handle. The trigger unit 130 includes a first trigger component 200 for pressing the first button 220 and a second trigger component 210 for pressing the second button 230; The testing unit includes a wind speed sensor, a temperature sensor, and a first humidity sensor. The wind speed sensor is located inside the limiting seat 170, with its detection end extending to the opening, for collecting the wind speed at the air outlet 240. The temperature sensor is located on the side wall of the limiting seat 170 at the edge of the opening, for fitting against the outer wall of the air outlet 240 when the blower 120 is inserted, to detect the surface temperature change data of the air outlet 240 under sudden environmental changes. The first humidity sensor is located on the air inlet side 250 of the blower 120, for acquiring the humidity of the airflow entering the blower 120. The controller is electrically connected to both the test unit and the blower 120.

[0025] This hair dryer 120 testing system uses the base 260 as the supporting foundation. Through the coordinated operation of the fixing unit, triggering unit 130, testing unit and controller, it realizes automated and standardized performance testing of the hair dryer 120.

[0026] The specific working process is as follows: The hair dryer 120 under test is inserted into the opening of the limiting seat 170, so that the air outlet 240 is aligned with the opening direction. At the same time, the second limiting component limits the handle of the hair dryer 120, thereby reliably fixing the hair dryer 120 to the base 260 and ensuring that its posture does not shift during the test. The controller is electrically connected to the hair dryer 120 and the test unit respectively. After the test is started, the controller controls the first trigger component 200 and the second trigger component 210 to press the first button 220 and the second button 230 on the handle of the hair dryer 120 respectively to simulate user operation and make the hair dryer 120 enter the preset working position. After the hair dryer 120 is running, the airflow generated by its outlet 240 is monitored in real time by a wind speed sensor located inside the limiting seat 170 with its detection end extending to the opening. Simultaneously, a temperature sensor located on the side wall of the limiting seat 170 at the edge of the opening, in close contact with the outer wall of the outlet 240 when the hair dryer 120 is inserted, monitors the temperature changes on the surface of the outlet 240 in real time, especially for capturing the transient response of surface temperature during sudden environmental changes (such as rapid changes in temperature and humidity). Furthermore, a first humidity sensor located on the air inlet side 250 of the hair dryer 120 continuously acquires the humidity data of the airflow entering the hair dryer 120. All the aforementioned wind speed, temperature, and humidity signals are transmitted to the controller in real time. The controller records, processes, and analyzes the data to comprehensively evaluate the stability of the hair dryer 120's output wind speed, the temperature change characteristics of the outlet 240 surface, and the impact of the inlet humidity on operation, thus completing the automated detection of the key performance indicators of the hair dryer 120.

[0027] By setting the base 260 and the fixing unit including the first limiting component and the second limiting component, the main body and handle of the hair dryer 120 can be effectively limited, ensuring that the hair dryer 120 always maintains the preset posture during the test, avoiding deviation of the test position due to manual handling or shaking, thereby improving the stability and consistency of the test process; the trigger unit 130 includes a first trigger component 200 and a second trigger component 210 for pressing the first button 220 and the second button 230 respectively, realizing automated simulation operation of different function levels of the hair dryer 120 without manual switching, improving test efficiency, and ensuring that the force and stroke of each press are consistent, reducing the uncertainty caused by human operation; the test unit sets the wind speed sensor inside the limiting base 170 and the detection end extends to the opening, which can accurately collect the real-time wind speed at the air outlet 240; temperature sensor The first humidity sensor, located on the side wall of the limiting seat 170 and at the edge of the opening, fits against the outer wall of the air outlet 240 when the hair dryer 120 is inserted. This effectively detects the surface temperature change data of the air outlet 240 under sudden environmental changes, providing a reliable basis for evaluating the temperature response characteristics of the hair dryer 120. The first humidity sensor, located on the air inlet side 250 of the hair dryer 120, can acquire the humidity of the airflow entering the hair dryer 120. This is beneficial for analyzing the impact of the airflow humidity on the working performance of the hair dryer 120, enabling multi-dimensional comprehensive testing of the hair dryer 120's wind speed, temperature, and humidity-related performance. The controller is electrically connected to both the test unit and the hair dryer 120, enabling real-time acquisition of test data and synchronous control of the hair dryer 120's working status. This achieves automation and intelligence in the testing process, improves the accuracy and efficiency of the test data, and provides reliable technical support for the performance evaluation and quality inspection of the hair dryer 120.

[0028] The side wall of the limiting seat 170 is provided with at least two sensor mounting holes. The sensor mounting holes are spaced apart along the circumferential direction of the opening. Each sensor mounting hole is provided with a temperature sensor. Multiple temperature sensors are used to fit against multiple different positions on the outer wall of the air outlet 240 when the blower 120 is inserted, so as to detect the temperature distribution data of the air outlet 240 along the circumferential direction.

[0029] At least two sensor mounting holes are formed on the side wall of the limiting seat 170 along the circumferential direction of the opening. When the blower 120 is inserted into the limiting seat 170, the temperature sensor in each mounting hole forms a close contact with a different circumferential position on the outer wall of the air outlet 240. Since the sensors are distributed at equal or unequal intervals along the circumference, when the blower 120 is running, each temperature sensor independently collects the surface temperature signal at its corresponding position and transmits these signals to the controller in real time. The controller synchronously records and compares the temperature data at multiple positions to construct a temperature distribution curve of the outer wall of the air outlet 240 along the entire circumferential direction, which can accurately reflect the temperature differences and trends of different angle areas under the same operating conditions.

[0030] By using at least two circumferentially distributed temperature sensors, the outer wall temperature of the air outlet can be simultaneously acquired from more than 240 different locations. This overcomes the limitation of single-point temperature measurement, which cannot reflect the overall distribution, and provides direct and reliable data for evaluating the circumferential uniformity of the blower's 120mm outlet temperature. When the ambient temperature or humidity changes abruptly, the thermal response speed of different circumferential areas of the air outlet may vary. Simultaneous acquisition by multiple sensors can completely record the transient temperature change process of each area, avoiding the risk of missing temperature peaks in critical areas that might occur with single-point measurements, and enhancing the system's ability to identify condensation risks.

[0031] The test unit also includes a second humidity sensor, which is located inside the limit seat 170 and on one side of the wind speed sensor. The detection end of the second humidity sensor extends to the air outlet 240 of the blower 120 to obtain the humidity of the airflow inside the air outlet 240.

[0032] The second humidity sensor is fixedly installed inside the limiting seat 170, spatially positioned to one side of the wind speed sensor, with its detection end extending into the internal airflow channel of the air outlet 240 of the blower 120. When the blower 120 is running, the airflow discharged from the air outlet 240 flows over the surface of the detection end. The sensitive element inside the humidity sensor (such as a capacitive or resistive humidity-sensitive material) changes its electrical parameters (capacitance or resistance value) according to the change in the partial pressure of water vapor in the airflow. This change is converted into a standard electrical signal by the internal conversion circuit and transmitted to the controller in real time. Since the detection end is directly placed inside the air outlet 240, the acquired humidity data accurately reflects the actual moisture content of the airflow output by the blower 120 after heating and airflow through the duct, providing the system with key humidity information from the air outlet 240 side.

[0033] The detection end is placed directly inside the air outlet 240, in direct contact with the high-speed airflow output. This avoids measurement deviations caused by the mixing of external ambient air or interference from heat and mass transfer on the outer wall of the air duct. The obtained humidity value accurately reflects the actual humidity of the airflow output by the blower 120. When the system is also equipped with a first humidity sensor on the air inlet side 250, by comparing the inlet and outlet humidity, the change in airflow humidity caused by the lawn blower 120 during operation can be accurately calculated, providing a quantitative basis for evaluating the airflow characteristics of the equipment under different ambient humidity levels. The lawn blower 120 is often used in humid outdoor environments. If it draws in high-humidity air, condensation may occur on the internal air duct or motor surface. By monitoring the outlet humidity in real time and combining it with temperature data, abnormally high outlet humidity can be detected in a timely manner (indicating internal moisture accumulation or poor drainage), thereby warning of condensation risks, preventing moisture from entering the motor and electronic components, avoiding short circuits or corrosion, and improving the operational reliability of the equipment in harsh weather conditions.

[0034] The second limiting component also includes a first limiting post 150, a second limiting post 160, and an adjustment mechanism. The adjustment mechanism is disposed between the base 260 and the first limiting post 150 and / or the second limiting post 160, and is used to adjust the gap between the first limiting post 150 and the second limiting post 160 so that the second limiting component can be adapted to hair dryers 120 of different sizes. The tops of the first limiting post 150 and the second limiting post 160 are provided with guide rounded corners, which are used to form a guide engagement with the outer contour of the handle of the hair dryer 120.

[0035] During the process of inserting the hair dryer 120 into the limiting seat 170, the guide rounded corners at the top of the first limiting post 150 and the second limiting post 160 first contact the outer contour of the handle. The rounded corners guide the handle to smoothly slide into the limiting area between the two limiting posts until the handle is reliably constrained between the two posts, thus completing the positioning and fixing.

[0036] By adjusting the distance between the first limit post 150 and the second limit post 160, the system can accommodate the handle width of different sizes and models of lawn blowers 120 without changing clamps or using additional adapters. A single testing system can meet the testing needs of multiple product varieties, significantly reducing testing tooling costs and management complexity. The adjustment mechanism has a simple structure, allowing operators to quickly adjust the limit post spacing according to the actual size of the blower 120 under test. The adjustment process requires no special tools or complex disassembly, shortening changeover time and facilitating rapid switching and continuous testing of multiple batches and models of products on the production line.

[0037] The trigger unit 130 also includes a moving component 190, which is disposed below the first trigger component 200 and the second trigger component 210. The moving component 190 includes a sliding seat and a driving component. The first trigger component 200 includes a first trigger cylinder, and the second trigger component 210 includes a second trigger cylinder. Both the first and second trigger cylinders are fixedly mounted on the sliding seat. The driving component is connected to the sliding seat and is used to drive the sliding seat to slide back and forth along the longitudinal direction of the base 260, so as to drive the first and second trigger cylinders to move synchronously. The controller is also electrically connected to the driving component and is used to control the action of the driving component according to the model information of the hair dryer 120, so as to drive the first and second trigger cylinders to move to the trigger positions corresponding to the first button 220 and the second button 230.

[0038] The moving component 190 serves as the displacement adjustment mechanism for the trigger unit 130, carrying the first and second trigger cylinders. A sliding seat is slidably mounted on the base 260, and both the first and second trigger cylinders are fixedly mounted on the sliding seat, moving synchronously with it. The driving component is connected to the sliding seat and electrically connected to the controller. Before the test begins, the controller retrieves or calculates the position coordinates of the first button 220 and the second button 230 on the handle according to the model information of the lawn blower 120 under test, and sends an action command to the driving component. After receiving the command, the driving component drives the sliding seat to reciprocate along the side of the blower 120 in the insertion direction to the designated position, causing the first and second trigger cylinders mounted on the sliding seat to move synchronously to positions directly above or in front of the first button 220 and the second button 230, respectively. The trigger cylinders then actuate to complete the pressing operation.

[0039] Different models or batches of lawn blowers 120 may have variations in the button positions on their handles. The moving component 190 automatically adjusts the longitudinal position of the sliding seat based on the model information via a controller, ensuring the trigger cylinder accurately aligns with the buttons at different locations. This eliminates the need for manual adjustment or replacement of the trigger component. One trigger unit 130 can cover the testing needs of various product specifications, significantly enhancing the versatility and compatibility of the testing system. The controller controls the drive mechanism based on preset model parameters, allowing the sliding seat to move precisely to the calculated position. This ensures the pressing end of the trigger cylinder is always aligned with the effective pressing area of ​​the button, avoiding problems such as pressing failure, accidental activation, or uneven pressing force caused by positional deviations. This improves the success rate of test actions and the effectiveness of data acquisition.

[0040] The base 260 has several ventilation holes 140, which extend through the upper and lower surfaces of the base 260. The ventilation holes 140 are located on the base 260 and extend along its thickness, forming a continuous ventilation channel. During the operation test of the lawn blower 120, the high-speed airflow discharged from the blower 120's outlet 240 is blown out through the opening of the limiting seat 170, and some of the airflow diffuses outward along the upper surface of the base 260. When the airflow passes through the area where the ventilation holes 140 are located, because the ventilation holes 140 provide a low-resistance path for airflow, the airflow can smoothly flow from the upper surface to the lower surface of the base 260 through these holes, achieving pressure balance and natural convection between the upper and lower air layers. Meanwhile, during the long-term continuous operation of the lawn blower 120, the heat generated inside the base 260 and the various components installed on it can also be dissipated to the outside through the ventilation holes 140 by air convection, maintaining the base 260 and sensor elements within a suitable operating temperature range.

[0041] The lawn blower 120 features a large air volume and high air velocity, with its output airflow directly impacting the surfaces of the limit seat 170 and the base 260. The vent 140 provides a dissipation channel for the high-speed airflow, allowing excess airflow to be discharged downwards through the base 260. This reduces airflow reflection, accumulation, and eddy formation on the surface of the base 260, thus avoiding interference from turbulence on the accuracy of the wind speed sensor measurement and ensuring the authenticity and stability of the test data. Testing the lawn blower 120 typically requires continuous operation for extended periods to assess its durability and thermal stability. Heat from the motor and the environmental simulation unit can cause the temperature of the base 260 to rise. The vent 140 uses convection heat exchange to dissipate heat from the base 260 and its internal components (such as sensors and circuit boards), preventing excessive temperature rise from affecting sensor accuracy and the lifespan of electronic components, thereby improving the stability and reliability of the testing system during long-term continuous operation.

[0042] The first limiting component also includes a locking cylinder 180. A locking through hole is provided on the limiting seat 170. The locking cylinder 180 is located on one side of the locking through hole, and the piston rod of the locking cylinder 180 can extend and retract through the locking through hole to lock the blower 120 inserted at the opening onto the limiting seat 170.

[0043] The locking cylinder 180 is fixedly installed on one side of the limiting seat 170, with its piston rod extending in the direction of the locking through hole on the limiting seat 170. When the lawn blower 120 under test is inserted into the limiting seat 170 through the opening, the controller sends an action signal to the locking cylinder 180, driving the piston rod to extend and pass through the locking through hole, so that its end presses against the corresponding abutment part of the blower 120 housing (such as the housing groove, positioning plane, or reinforcing rib), fixing the blower 120 in the limiting seat 170 through a lateral or oblique clamping force. After the test is completed, the controller controls the piston rod of the locking cylinder 180 to retract in the opposite direction, disengaging from the blower 120 and releasing the locking state so that the operator can remove the blower 120.

[0044] The piston rod of the locking cylinder 180 extends and passes through the locking through-hole, acting directly on the housing of the blower 120. This provides a stable and sufficiently large locking force, effectively preventing the lawn blower 120 from shifting, deflecting, or loosening due to vibration or airflow backlash during high-speed operation. This ensures that the blower 120 remains in the preset position throughout the test, significantly improving the stability and safety of the test operation. The driving force of the cylinder is precisely adjusted by the pneumatic system, and the pressure exerted by the piston rod on the housing of the blower 120 can be stably controlled within a preset range. This ensures reliable fixation without causing deformation, indentation, or cracking of the housing due to excessive locking force, effectively protecting the appearance and structural integrity of the lawn blower 120.

[0045] It also includes a protective housing 100 disposed outside the base 260. One side of the protective housing 100 is provided with a viewing window 110, and the other side is provided with a movable door for replacing the blower 120. The top of the base 260 is open to form a heat dissipation channel, and a protective light grid is provided at the movable door. The protective light grid is electrically connected to the controller and is used to control the blower 120 to stop working when foreign object intrusion is detected.

[0046] A protective housing 100 is installed outside the base 260, isolating the test area from the external environment and forming a relatively enclosed test space. A viewing window 110 is provided on one side of the protective housing 100, allowing operators to directly observe the operation of the blower 120 and the actions of its components during the test. A movable door is provided on the other side, serving as an access channel for placing and removing the blower 120 under test. Operators can open the movable door to replace the blower 120 and close it to restore the sealed protective state. The top of the base 260 remains open, forming an air convection path together with the ventilation holes 140 at the bottom of the base 260 and the internal space of the housing. This allows high-speed airflow and heat to dissipate naturally in both upward and downward directions, preventing excessive internal temperature rise. A protective light curtain is installed at the movable door, and its signal output is electrically connected to the input of the controller. When the beam of the protective light curtain is blocked, it detects a hand or foreign object entering the movable door area and immediately sends an interrupt signal to the controller. The controller then controls the blower 120 and the trigger unit 130 to stop working, achieving emergency shutdown protection. The system can only be restarted after the foreign object has been removed and the grating beam has been restored to normal operation.

[0047] The protective housing 100 confines the high-volume, high-speed airflow and high-decibel operating noise generated by the lawn blower 120 within its interior, preventing direct impact and noise interference on external operators. This significantly reduces noise pollution and airflow discomfort in the work area, creating a safer and more comfortable operating environment. The enclosed protective housing 100 effectively prevents external debris, dust, and operator limbs from accidentally entering the blower 120's operating area during testing. Combined with the active detection of the protective light curtain, a dual safety protection system is constructed from both physical isolation and active emergency stop levels, effectively preventing injury to the human body caused by high-speed rotating parts or high-pressure airflow.

[0048] The first limiting component also includes a sealing sleeve and a clamping member. The sealing sleeve is fitted onto the opening edge of the limiting seat 170. The inner wall of the sealing sleeve is provided with an elastic sealing ring edge for fitting the outer wall of the air outlet 240. The clamping member is located on the outer side of the sealing sleeve and is used to adjust the diameter of the sealing sleeve to fit different sizes of air outlets 240.

[0049] The sealing sleeve is fitted onto the opening edge of the limiting seat 170, serving as an interface transition element between the air outlet 240 of the blower 120 and the limiting seat 170. The inner wall of the sealing sleeve is provided with an elastic sealing ring edge, which is made of a flexible elastomer material and has compressible deformation characteristics. When the lawn blower 120 is inserted into the limiting seat 170 through the opening, the outer wall of the air outlet 240 first contacts the elastic sealing ring edge. Under the pushing action of the air outlet 240, the ring edge undergoes elastic deformation, tightly fitting against the circumferential surface of the outer wall of the air outlet 240, forming an annular sealing band. Meanwhile, the clamping component is fitted onto the outside of the sealing sleeve. Adjusting its clamping force manually or pneumatically changes the radial diameter of the sealing sleeve: when the outlet 240 of the blower under test (120) is small, tightening the clamping component reduces the sealing sleeve diameter, causing the elastic sealing ring to retract inwards, ensuring a tight fit with the smaller outer diameter outlet 240; when the outlet 240 is large, appropriately loosening the clamping component expands the sealing sleeve diameter to accommodate a larger outer diameter outlet 240. Through the elastic adaptation of the sealing sleeve and the active adjustment of the clamping component, a circumferential full-fit seal is achieved on the outer wall of outlets 240 of different sizes.

[0050] With the cooperation of the clamping device, the elastic sealing ring edge fits tightly against the outer wall of the air outlet 240 to form a continuous circumferential seal, effectively preventing the high-speed airflow output by the blower 120 from leaking outward through the gap between the air outlet 240 and the opening of the limiting seat 170. This ensures that most of the airflow flows through the wind speed sensor via the internal channel of the limiting seat 170, thereby improving the accuracy of wind speed measurement and the integrity of the air path. The outer diameter of the air outlet 240 varies depending on the model of the lawn blower 120. The clamping device allows for flexible adjustment of the sealing sleeve's diameter, and combined with the deformation capability of the elastic sealing ring edge, the same sealing sleeve can adapt to various air outlet 240 sizes within a certain range. This eliminates the need to replace the sealing ring or limiting seat 170 separately for each model, significantly reducing the tooling cost and changeover time of the testing system.

[0051] Reference Figures 1 to 5 The base 260, serving as the supporting foundation for the entire testing system, is made of metal and possesses sufficient structural strength and stability. The upper surface of the base 260 is a working plane used to mount and fix the various components of the trigger unit 130. Several ventilation holes 140 are provided on the base 260, extending through the upper and lower surfaces and spaced apart along the longitudinal direction of the base 260. The ventilation holes 140 guide the high-speed airflow discharged from the outlet 240 of the lawn blower 120 during operation, preventing airflow accumulation and turbulence on the surface of the base 260. They also serve as heat dissipation channels, facilitating heat dissipation from the interior of the base 260 and the various sensor components.

[0052] The fixing unit includes a first limiting component and a second limiting component.

[0053] The first limiting assembly includes a limiting seat 170, a sealing sleeve, a clamping member, and a locking cylinder 180. The limiting seat 170 is fixedly mounted on the base 260 and has a cylindrical structure, with an opening at its top for inserting a blower 120. The side wall of the limiting seat 170 has at least two sensor mounting holes, spaced apart circumferentially along the opening, for mounting temperature sensors in the test unit. The side wall of the limiting seat 170 also has a locking through hole located below the sensor mounting holes.

[0054] A sealing sleeve is fitted onto the opening edge of the limiting seat 170. The sealing sleeve is made of elastic materials such as silicone rubber or fluororubber. The inner wall of the sealing sleeve has an elastic sealing ring that extends continuously along the circumferential direction of the sealing sleeve. This ring is used to fit against the outer wall of the air outlet 240 when the blower 120 is inserted, forming a circumferential seal. A clamping member is located on the outside of the sealing sleeve. In this embodiment, the clamping member adopts a worm gear type clamp structure. The clamping force can be changed by rotating the adjusting bolt, thereby adjusting the diameter of the sealing sleeve to accommodate air outlets 240 with different outer diameters. When the air outlet 240 of the blower 120 under test is small, tightening the clamping member reduces the diameter of the sealing sleeve, causing the elastic sealing ring to retract inwards, ensuring a tight fit with the smaller outer diameter air outlet 240. When the air outlet 240 is large, the clamping member is appropriately loosened, expanding the diameter of the sealing sleeve to accommodate the larger outer diameter air outlet 240.

[0055] A locking cylinder 180 is located on one side of the locking through hole and is fixedly mounted on the outer wall of the limiting seat 170 via a cylinder bracket. The piston rod of the locking cylinder 180 extends and retracts through the locking through hole, and a flexible buffer pad is provided at the end of the piston rod. When the blower 120 is inserted into the opening of the limiting seat 170, the piston rod of the locking cylinder 180 extends, passes through the locking through hole, and presses against the corresponding part of the blower 120 housing, locking the blower 120 onto the limiting seat 170 to prevent it from shifting or deviating during testing due to vibration or airflow backlash.

[0056] The second limiting component is located behind the limiting seat 170 (i.e., on the side where the handle of the hair dryer 120 is located) and is used to limit the handle. The second limiting component includes a first limiting post 150, a second limiting post 160, and an adjustment mechanism. Both the first limiting post 150 and the second limiting post 160 are vertically arranged cylindrical structures made of engineering plastic or metal. The tops of the first limiting post 150 and the second limiting post 160 are respectively provided with guide rounded corners, which are arc-shaped transition surfaces used to guide the hair dryer 120 to form a guiding fit with the outer contour of the handle when it is inserted, guiding the handle to smoothly slide into the limiting area between the two limiting posts.

[0057] An adjustment mechanism is located between the base 260 and the first limiting post 150 and / or the second limiting post 160. In this embodiment, the adjustment mechanism adopts a screw and nut adjustment structure, including an adjusting screw and a slider. The first limiting post 150 is fixedly installed on the slider, and the slider is threadedly engaged with the adjusting screw. The operator can rotate the adjusting screw to drive the first limiting post 150 to move in the lateral direction of the base 260, thereby changing the interval distance between the first limiting post 150 and the second limiting post 160, so that the second limiting component can be adapted to the handle of the blower 120 of different sizes.

[0058] The trigger unit 130 is located at the rear upper part of the limit seat 170 and includes a first trigger component 200, a second trigger component 210 and a moving component 190.

[0059] The first triggering component 200 includes a first triggering cylinder, and the second triggering component 210 includes a second triggering cylinder. Both the first and second triggering cylinders are miniature linear cylinders, and their piston rod ends are respectively provided with flexible pressing heads for pressing the first button 220 and the second button 230 on the handle of the hair dryer 120.

[0060] The moving component 190 is disposed below the first trigger component 200 and the second trigger component 210, and includes a sliding seat and a driving component. The sliding seat is slidably mounted on the base 260 via a linear guide rail. The first trigger cylinder and the second trigger cylinder are both fixedly mounted on the sliding seat, and their relative positions on the sliding seat are fixed. The driving component is driven by the sliding seat. In this embodiment, the driving component adopts a servo motor and a lead screw transmission mechanism. The output shaft of the servo motor is connected to the lead screw via a coupling, and the sliding seat is threadedly engaged with the lead screw. The driving component is electrically connected to the controller. The controller controls the operation of the driving component according to the model information of the hair dryer 120 under test, driving the sliding seat to slide back and forth along the longitudinal direction of the base 260, so as to drive the first trigger cylinder and the second trigger cylinder to move synchronously to the trigger positions corresponding to the first button 220 and the second button 230.

[0061] The test unit includes a wind speed sensor, a temperature sensor, a first humidity sensor, and a second humidity sensor.

[0062] The wind speed sensor is located inside the limit seat 170. It is a hot-wire or impeller-type wind speed sensor. Its detection end extends to the opening and is located at the central axis of the air outlet 240. It is used to collect wind speed data of the air outlet 240.

[0063] Multiple temperature sensors are provided; in this embodiment, two temperature sensors are provided, each installed in a sensor mounting hole on the side wall of the limiting seat 170. The two sensor mounting holes are evenly spaced along the circumferential direction of the opening (i.e., one is set every 180°). Each temperature sensor is a thermocouple or thermistor type temperature sensor. When the blower 120 is inserted, its sensing end is attached to multiple different positions on the outer wall of the air outlet 240 to detect the temperature distribution data of the air outlet 240 along the circumferential direction. Especially under sudden environmental changes, it can capture the transient temperature change response of various areas on the surface of the air outlet 240.

[0064] The protective housing 100 is located outside the base 260, enclosing the entire testing area. The protective housing 100 is made of a transparent PC board or metal frame with a transparent observation panel. One side of the protective housing 100 has a viewing window 110, allowing operators to directly observe the operation of the blower 120 and the movement of its components during the test. The other side of the protective housing 100 has a movable door, serving as a passage for placing and removing the blower 120 under test. Operators can open the door to replace the blower 120 and close it to restore the sealed protective state. The top of the base 260 is open, forming a continuous heat dissipation channel with the internal space of the protective housing 100 and the ventilation holes 140 at the bottom of the base 260, ensuring that high-speed airflow and heat can dissipate naturally.

[0065] A protective light curtain is installed at the movable door, comprising a transmitter and a receiver, respectively installed on both sides of the door opening. The protective light curtain is electrically connected to the controller. When the beam of the protective light curtain is blocked (i.e., a hand or foreign object is detected entering the movable door area), the protective light curtain immediately sends an interrupt signal to the controller. The controller then controls the blower 120 and the trigger unit 130 to stop working, achieving emergency shutdown protection. The system can only restart after the foreign object has been removed and the light curtain beam is unobstructed.

[0066] The first humidity sensor is located on the air inlet side 250 of the blower 120 (i.e., at the air inlet at the rear of the blower 120), and is fixedly mounted on the base 260 by a bracket. Its sensing end faces the air inlet and is used to acquire the humidity of the airflow entering the blower 120. The second humidity sensor is located inside the limiting seat 170 and on one side of the wind speed sensor. Its sensing end extends into the air outlet 240 of the blower 120 and is used to acquire the humidity of the airflow inside the air outlet 240. The second humidity sensor works in conjunction with the first humidity sensor. By comparing the inlet and outlet humidity, the ability of the blower 120 to regulate the airflow humidity during operation can be accurately calculated. All sensors are electrically connected to the controller via signal lines, transmitting the collected wind speed, temperature, and humidity signals to the controller in real time.

[0067] The testing method according to a second aspect embodiment of the present invention further includes an environmental simulation unit disposed outside the base 260 for adjusting the temperature and humidity of the environment in which the base 260 is located. The testing unit also includes a second humidity sensor. The testing method includes the following steps: Power supply preparation steps: Remove the lithium battery from the hair dryer 120, connect the external adjustable power supply to the power supply terminal of the hair dryer 120, supply test power to the hair dryer 120 through the external adjustable power supply, and record the power supply voltage and current values ​​of the external adjustable power supply. Programming steps: The controller communicates with the ECU of the blower 120 through the communication interface, programs the test program into the ECU, and returns a successful programming signal to the controller after programming is completed. Environmental preparation steps: The controller controls the environmental simulation unit to adjust the environment where the base 260 is located to the first ambient temperature value and the first ambient humidity value, and maintains it for the first preset time. Dew point calculation steps: The controller acquires the first ambient temperature value and the first ambient humidity value, and calculates the dew point temperature under the current ambient conditions; First detection step: The controller controls the fixing unit to lock the hair dryer 120 on the limit seat 170, and controls the first trigger component 200 and the second trigger component 210 to press the first button 220 and the second button 230 respectively to start the hair dryer 120. The wind speed sensor collects the first wind speed data, the temperature sensor collects the first temperature data, the first humidity sensor collects the first air inlet humidity data, and the second humidity sensor collects the first air outlet humidity data. First condensation judgment step: The controller compares the first temperature data with the dew point temperature. If the first temperature data is lower than or equal to the dew point temperature, and the difference between the first outlet humidity data and the first inlet humidity data exceeds the first preset difference threshold, it is determined that there is a risk of condensation inside the blower 120, and a first condensation alarm signal is generated. Environment switching steps: The controller controls the environment simulation unit to switch the environment where the base 260 is located from the first ambient temperature value and the first ambient humidity value to the second ambient temperature value and the second ambient humidity value. The absolute value of the temperature difference between the second ambient temperature value and the first ambient temperature value is not less than 15℃, and the absolute value of the humidity difference between the second ambient humidity value and the first ambient humidity value is not less than 30%RH. Second detection step: After the environmental simulation unit is switched, the wind speed sensor collects the second wind speed data, the temperature sensor collects the second temperature data, the first humidity sensor collects the second inlet humidity data, and the second humidity sensor collects the second outlet humidity data. Second condensation judgment step: The controller compares the second temperature data with the dew point temperature under the current environmental conditions. If the second temperature data is lower than or equal to the current dew point temperature, and the difference between the second outlet humidity data and the second inlet humidity data exceeds the second preset difference threshold, it is determined that the blower 120 generates condensate water inside after the environment is switched, and a second condensation alarm signal is generated. Comparison and judgment steps: The controller calculates the rate of change of wind speed between the first wind speed data and the second wind speed data, and the rate of change of temperature between the first temperature data and the second temperature data. If the rate of change of wind speed exceeds the first preset threshold or the rate of change of temperature exceeds the second preset threshold, the blower 120 is judged to be unqualified under the sudden change of environmental conditions. Stability recovery test steps: The controller controls the environment simulation unit to restore the environment where the base 260 is located to the first ambient temperature value and the first ambient humidity value and maintain it for the second preset time. Then, the wind speed sensor collects the third wind speed data, the temperature sensor collects the third temperature data, and the second humidity sensor collects the third outlet humidity data. The controller compares the third wind speed data with the first wind speed data. If the difference exceeds the third preset threshold, it is determined that the performance of the blower 120 cannot be stabilized after the environment is restored, and the test is unqualified. Condensation dissipation judgment steps: The controller compares the third outlet humidity data with the first outlet humidity data. If the difference between the two exceeds the fourth preset threshold, it is determined that the condensate inside the blower 120 has not completely dissipated and the test is unqualified. Reset procedure: After the test is completed, the controller controls the first trigger component 200 and the second trigger component 210 to reset, and controls the fixing unit to loosen.

[0068] Before the test begins, a power supply preparation step is performed. The lithium battery inside the hair dryer 120 is removed and replaced with an external adjustable power supply. Simultaneously, the power supply voltage and current values ​​are recorded to eliminate the interference of battery degradation on the test results and ensure consistent power supply conditions for each test. Next, the program is programmed. The controller programs the test program to the ECU of the hair dryer 120 via the communication interface, causing the hair dryer 120 to operate according to the preset test logic. Upon completion of the programming, a confirmation signal is returned to ensure the control link is functioning correctly.

[0069] Upon entering the formal testing phase, the controller first adjusts the environment of the base 260 to the first ambient temperature and humidity values ​​and maintains them for a first preset duration, allowing the blower 120 to fully reach the initial environmental equilibrium state. Subsequently, the controller calculates the dew point temperature under the current conditions based on the acquired first ambient temperature and humidity values—the dew point temperature is the critical temperature at which water vapor in the air begins to condense into liquid water, and its value is determined by both temperature and humidity.

[0070] In the first detection step, the controller controls the fixing unit to lock the blower 120 and controls the trigger component to press the button to start the blower 120. Each sensor synchronously collects the first wind speed data, first temperature data, first inlet air humidity data, and first outlet air humidity data in the initial state to establish a performance benchmark value. Based on this, the first condensation judgment step compares the surface temperature of the outlet 240 with the dew point temperature: if the surface temperature is lower than or equal to the dew point temperature, it indicates that the outer wall of the outlet 240 has reached the critical condition for water vapor condensation; simultaneously, it combines the change in the difference between the outlet humidity and the inlet humidity—if the difference exceeds a first preset difference threshold, it indicates that the humidity of the airflow inside the blower 120 has not been effectively reduced after flowing through the air duct, and there may be moisture accumulation or poor drainage. When both of the above conditions are met simultaneously, a condensation risk is determined, and a first condensation alarm signal is generated.

[0071] The environment then transitions to a switching phase. The environmental simulation unit drastically switches the environment of the base 260 from a first environmental state to a second environmental state, with an absolute temperature difference of not less than 15°C and an absolute humidity difference of not less than 30%RH. This simulates the harsh operating conditions of the lawn blower 120 experiencing a rapid climate change (such as transitioning from a cold outdoor environment to a hot and humid one) within a very short time. After the environment switching is complete, the second detection step collects the second set of data from each sensor. The second condensation judgment step uses the same logic as the first condensation judgment, comparing the temperature of the outlet 240 after the switch with the current dew point temperature, and combining this with the humidity difference between the inlet and outlet air to determine whether condensation has occurred internally after the environment switching.

[0072] The comparison and judgment process calculates the rate of change of wind speed and temperature before and after the environmental change to quantitatively evaluate the output stability and temperature control response capability of the hair dryer 120 under sudden environmental shocks. If the rate of change of wind speed or temperature exceeds the preset threshold, it indicates that the hair dryer 120 cannot maintain normal operating performance under this extreme condition and is judged as unqualified.

[0073] The recovery and stabilization test step involves collecting a third wind speed data point after the environment returns to its initial state and is maintained for a second preset time. This data is then compared with the first wind speed data to verify whether the hair dryer 120 has the ability to recover to its original performance level after experiencing environmental shocks. If the difference exceeds the third preset threshold, it indicates that irreversible performance drift has occurred inside the hair dryer 120. The condensation dissipation judgment step further compares the recovered outlet humidity with the initial outlet humidity. If the difference exceeds the fourth preset threshold, it indicates that the condensate inside the hair dryer 120 has not completely dissipated after the environment returns to normal and remains in the air duct or internal structure.

[0074] Finally, the reset step controls the trigger component and the fixed unit to reset, completing the entire test process.

[0075] Through centralized control of the environmental simulation unit, fixing unit, triggering unit 130, and various sensors by the controller, the testing method can automatically perform power supply preparation, program burning, environmental adjustment, data acquisition, judgment analysis, and reset operations without manual intervention, significantly improving testing efficiency and eliminating errors introduced by manual operation, ensuring the consistency and repeatability of test results. The testing method sets up drastic environmental switching steps with an absolute temperature difference of not less than 15℃ and an absolute humidity difference of not less than 30%RH, which can simulate the sudden temperature and humidity changes of the hair dryer 120 in real harsh usage scenarios such as moving from a cold outdoor environment to a humid bathroom. Based on this, through the second detection step and the second condensation judgment step, it effectively assesses whether condensation is generated inside the hair dryer 120 after a sudden change in environment, providing a reliable verification basis for the product's anti-condensation design. The controller calculates the dew point temperature based on the current ambient temperature and humidity, compares the surface temperature of the air outlet 240 with the dew point temperature, and performs a dual judgment based on the humidity difference between the inlet and outlet air, which can scientifically and accurately identify whether there is a risk of condensation inside the hair dryer 120. Compared to single humidity or single temperature determination methods, this method significantly improves the accuracy and reliability of condensation warning. By comparing the determination steps, calculating the rate of change of wind speed and temperature before and after the environmental change, and determining whether the test is qualified according to the preset threshold, it can evaluate the output stability and temperature control response capability of the hair dryer 120 under sudden environmental changes, making up for the shortcomings of traditional steady-state testing and more closely reflecting the transient change characteristics in actual use.

[0076] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A hair dryer testing system for testing a hair dryer having an air outlet, a handle, and a first button and a second button disposed on the handle, characterized in that, The hair dryer testing system includes: Base; The fixing unit includes a first limiting component and a second limiting component. The first limiting component includes a limiting seat, which is disposed on the base and has an opening for inserting the blower. The second limiting component is used to limit the handle portion. The triggering unit includes a first triggering component for pressing the first button and a second triggering component for pressing the second button; The testing unit includes a wind speed sensor, a temperature sensor, and a first humidity sensor. The wind speed sensor is disposed inside the limiting seat, with its detection end extending to the opening, for collecting the wind speed at the air outlet. The temperature sensor is disposed on the side wall of the limiting seat and located at the edge of the opening, for fitting against the outer wall of the air outlet when the hair dryer is inserted, to detect the surface temperature change data of the air outlet under sudden environmental changes. The first humidity sensor is disposed on the air inlet side of the hair dryer for acquiring the humidity of the airflow entering the hair dryer. The controller is electrically connected to both the test unit and the hair dryer.

2. The hair dryer testing system according to claim 1, characterized in that, The side wall of the limiting seat has at least two sensor mounting holes, which are spaced apart along the circumferential direction of the opening. Each sensor mounting hole is equipped with a temperature sensor. The multiple temperature sensors are used to fit against multiple different positions on the outer wall of the air outlet when the hair dryer is inserted, so as to detect the temperature distribution data of the air outlet along the circumferential direction.

3. The hair dryer testing system according to claim 1, characterized in that, The testing unit also includes a second humidity sensor, which is disposed inside the limiting seat and located on one side of the wind speed sensor. The detection end of the second humidity sensor extends to the air outlet of the hair dryer to obtain the humidity of the airflow inside the air outlet.

4. The hair dryer testing system according to claim 1, characterized in that, The second limiting component further includes a first limiting post, a second limiting post, and an adjustment mechanism. The adjustment mechanism is disposed between the base and the first limiting post and / or the second limiting post, and is used to adjust the interval distance between the first limiting post and the second limiting post so that the second limiting component can adapt to hair dryers of different sizes. The top of the first limiting post and the second limiting post are provided with guide rounded corners, which are used to form a guide engagement with the outer contour of the handle of the hair dryer.

5. A hair dryer testing system according to claim 1, characterized in that, The triggering unit further includes a moving component disposed below the first triggering component and the second triggering component. The moving component includes a sliding base and a driving member. The first triggering component includes a first triggering cylinder, and the second triggering component includes a second triggering cylinder. Both the first and second triggering cylinders are fixedly mounted on the sliding base. The driving member is convexly connected to the sliding base and is used to drive the sliding base to reciprocate along the longitudinal direction of the base, thereby causing the first and second triggering cylinders to move synchronously. The controller is also electrically connected to the driving member and is used to control the operation of the driving member according to the model information of the hair dryer, thereby moving the first and second triggering cylinders to trigger positions corresponding to the first and second buttons.

6. A hair dryer testing system according to claim 1, characterized in that, The base has several ventilation holes that extend through the upper and lower surfaces of the base.

7. A hair dryer testing system according to claim 1, characterized in that, The first limiting component also includes a locking cylinder. The limiting seat has a locking through hole. The locking cylinder is disposed on one side of the locking through hole, and the piston rod of the locking cylinder can extend and retract through the locking through hole to lock the hair dryer inserted into the opening onto the limiting seat.

8. A hair dryer testing system according to claim 1, characterized in that, It also includes a protective housing disposed outside the base, with a viewing window on one side and a movable door on the other side for replacing the hair dryer; the top of the base is open to form a heat dissipation channel, and a protective light grid is provided at the movable door, the protective light grid being electrically connected to the controller for controlling the hair dryer to stop working when foreign object intrusion is detected.

9. A hair dryer testing system according to claim 1, characterized in that, The first limiting component further includes a sealing sleeve and a clamping member. The sealing sleeve is fitted onto the opening edge of the limiting seat. The inner wall of the sealing sleeve is provided with an elastic sealing ring edge for fitting the outer wall of the air outlet. The clamping member is disposed on the outer side of the sealing sleeve and is used to adjust the diameter of the sealing sleeve to adapt to the air outlet of different sizes.

10. A method for testing a hair dryer, applied to the hair dryer testing system as described in any one of claims 1 to 9, characterized in that, It also includes an environmental simulation unit, which is disposed outside the base and is used to adjust the temperature and humidity of the environment in which the base is located. The testing unit also includes a second humidity sensor. The testing method includes the following steps: Power supply preparation steps: Remove the lithium battery from the hair dryer, electrically connect the external adjustable power supply to the power supply terminal of the hair dryer, supply test power to the hair dryer through the external adjustable power supply, and record the power supply voltage and current values ​​of the external adjustable power supply. Programming steps: The controller communicates with the ECU of the blower through the communication interface, programs the test program to the ECU, and returns a successful programming signal to the controller after programming is completed; Environmental preparation steps: The controller controls the environmental simulation unit to adjust the environment where the base is located to a first ambient temperature value and a first ambient humidity value, and maintains it for a first preset time. Dew point calculation steps: The controller acquires the first ambient temperature value and the first ambient humidity value, and calculates the dew point temperature under the current ambient conditions; First detection step: The controller controls the fixing unit to lock the hair dryer on the limiting seat, controls the first trigger component and the second trigger component to press the first button and the second button respectively to start the hair dryer, the wind speed sensor collects the first wind speed data, the temperature sensor collects the first temperature data, the first humidity sensor collects the first air inlet humidity data, and the second humidity sensor collects the first air outlet humidity data. First condensation judgment step: The controller compares the first temperature data with the dew point temperature. If the first temperature data is lower than or equal to the dew point temperature, and the difference between the first outlet humidity data and the first inlet humidity data exceeds the first preset difference threshold, it is determined that there is a risk of condensation inside the hair dryer, and a first condensation alarm signal is generated. Environment switching steps: The controller controls the environment simulation unit to switch the environment where the base is located from the first ambient temperature value and the first ambient humidity value to the second ambient temperature value and the second ambient humidity value. The absolute value of the temperature difference between the second ambient temperature value and the first ambient temperature value is not less than 15℃, and the absolute value of the humidity difference between the second ambient humidity value and the first ambient humidity value is not less than 30%RH. Second detection step: After the environmental simulation unit is switched, the wind speed sensor collects the second wind speed data, the temperature sensor collects the second temperature data, the first humidity sensor collects the second inlet humidity data, and the second humidity sensor collects the second outlet humidity data. Second condensation judgment step: The controller compares the second temperature data with the dew point temperature under the current environmental conditions. If the second temperature data is lower than or equal to the current dew point temperature, and the difference between the second outlet humidity data and the second inlet humidity data exceeds the second preset difference threshold, it is determined that the blower generates condensate water inside after the environment is switched, and a second condensation alarm signal is generated. Comparison and judgment steps: The controller calculates the rate of change of wind speed between the first wind speed data and the second wind speed data, and the rate of change of temperature between the first temperature data and the second temperature data. If the rate of change of wind speed exceeds the first preset threshold or the rate of change of temperature exceeds the second preset threshold, the hair dryer is judged to be unqualified under the sudden change of environmental conditions. Stability recovery test steps: The controller controls the environmental simulation unit to restore the environment where the base is located to the first ambient temperature value and the first ambient humidity value and maintain it for a second preset time. Then, the wind speed sensor collects the third wind speed data, the temperature sensor collects the third temperature data, and the second humidity sensor collects the third outlet humidity data. The controller compares the third wind speed data with the first wind speed data. If the difference exceeds the third preset threshold, it is determined that the performance of the hair dryer cannot be stabilized after the environment is restored, and the test is unqualified. Condensation dissipation judgment step: The controller compares the third outlet humidity data with the first outlet humidity data. If the difference between the two exceeds the fourth preset threshold, it is determined that the condensate inside the hair dryer has not completely dissipated and the test is unqualified. Reset procedure: After the test is completed, the controller controls the first trigger component and the second trigger component to reset, and controls the fixing unit to loosen.

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