Electric push rod durability testing device and method, electronic equipment and storage medium

Abstract

The invention discloses an electric push rod durability testing device and method, electronic equipment and a storage medium, and the device comprises an air cylinder module which is used for applying a target force to an electric push rod; the controller is used for controlling the air cylinder module to perform air inlet and outlet operation and controlling the electric push rod to perform telescopic operation in response to a test instruction of an operation object; wherein in the test stage, the air cylinder module keeps the target force to cooperate with the telescopic operation of the electric push rod to perform push-pull operation. According to the embodiment of the invention, the air inlet and outlet quantity of the air cylinder and the movement speed of the push rod are synchronously coordinated, so that the push-pull operation forms a dynamic balance system, and the load characteristic under the real working condition is accurately simulated; the method can improve the testing efficiency and testing accuracy, and can be widely applied to the technical field of device testing.

Description

Technical Field

[0001] The present invention relates to the technical field of device testing, and in particular to a device, method, electronic equipment and storage medium for testing the durability of an electric push rod. Background Art

[0002] Current traditional load simulation methods have the following limitations: Existing test devices often use fixed weights or spring mechanisms to apply loads, making dynamic force adjustment impossible. Furthermore, when the electric actuator retracts and retracts, the load force fluctuates due to the mechanical characteristics of the structure, resulting in significant deviations between the test conditions and the actual operating environment. Furthermore, existing test systems often utilize independent control modes, which cannot accurately simulate the dynamic interaction between the electric actuator and the external actuator in actual operating conditions. Summary of the Invention

[0003] The main purpose of the embodiments of the present invention is to provide an electric push rod durability testing device, method, electronic equipment and storage medium, in order to solve at least one problem of the prior art. The present invention can improve the test efficiency and test accuracy of the electric push rod durability test.

[0004] To achieve the above-mentioned purpose, one aspect of an embodiment of the present invention provides an electric linear actuator durability testing device, which is applied to the electric linear actuator, and includes:

[0005] Cylinder module, used to apply target force to the electric linear actuator;

[0006] The controller is used to control the cylinder module to perform air inlet and outlet operations and control the electric push rod to perform extension and retraction operations in response to the test instructions of the operation object;

[0007] During the testing phase, the cylinder module maintains the target force and cooperates with the extension and retraction operations of the electric push rod to perform pushing and pulling operations.

[0008] In some embodiments, the cylinder module includes a cylinder and a solenoid valve, and the test instruction includes a manual pressure adjustment instruction. When in the test preparation stage, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, specifically performing the following operations:

[0009] In response to the manual pressure adjustment instruction of the operation object, the solenoid valve is powered on and off to control the air inlet and outlet operation of the cylinder until the force applied by the cylinder to the electric push rod reaches the target force;

[0010] Among them, the manual pressure adjustment instruction is also used to adjust the stroke length of the cylinder; when the solenoid valve is energized, the air inlet of the cylinder is opened and the air outlet is closed for air intake operation; when the solenoid valve is de-energized, the air inlet of the cylinder is closed and the air outlet is opened for air discharge operation.

[0011] In some embodiments, the cylinder module includes a cylinder, a solenoid valve, and a constant pressure regulating valve. The test instruction includes an automatic pressure regulation instruction. When in the test phase, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, specifically for performing the following operations:

[0012] In response to the automatic pressure regulation instruction of the operation object, the real-time force value of the force applied by the cylinder module to the electric push rod is continuously collected;

[0013] When the real-time force value is not equal to the target force, the constant pressure regulating valve is activated through the automatic pressure regulation instruction, so that the constant pressure regulating valve controls the solenoid valve to perform power on and off operations to control the air inlet and outlet operations of the cylinder until the force value applied by the cylinder to the electric push rod reaches the target force;

[0014] Among them, when the solenoid valve is energized, the air inlet of the cylinder is opened and the air outlet is closed to perform the air intake operation; when the solenoid valve is de-energized, the air inlet of the cylinder is closed and the air outlet is opened to perform the air discharge operation.

[0015] In some embodiments, the device further comprises a force sensor and a force display meter;

[0016] The force sensor is arranged between the electric push rod and the cylinder module, and is used to collect the force signal of the force applied by the cylinder module to the electric push rod;

[0017] The force value display meter is used to numerically quantify the force applied by the cylinder module to the electric push rod based on the force value signal.

[0018] In some embodiments, the test instruction includes a start instruction and a test adjustment instruction, the electric push rod includes a motor and a push rod, and the controller includes a first time relay; when the controller controls the electric push rod to perform a telescopic operation in response to the test instruction of the operation object, it is specifically used to perform the following operations:

[0019] In response to a start instruction of the operation object, the motor of the electric push rod is connected to a preset DC power supply; wherein the start instruction is preset with a time node and a time limit for the motor to be connected to the DC power supply;

[0020] In response to a test adjustment instruction of the operation object, the polarity of the positive and negative voltages of the motor is adjusted through the first time relay to control the motor to perform forward and reverse rotation operations, so that the motor controls the push rod to perform extension and retraction operations;

[0021] When the motor rotates forward, the push rod extends; when the motor rotates reverse, the push rod retracts.

[0022] In some embodiments, the controller includes a first time relay and a second time relay. When in the test phase, the controller responds to the test instruction of the operation object to control the cylinder module to perform air inlet and outlet operations and the electric push rod to perform extension and retraction operations, and is specifically used to perform the following operations:

[0023] In response to a test instruction of the operation object, the electric push rod is adjusted to perform a telescopic operation through the first time relay; the telescopic operation includes an extension operation and a retraction operation;

[0024] When the test is a pressure test, when the electric push rod is extended, the cylinder module is adjusted to perform an air intake operation through the second time relay so that the cylinder module applies pressure to the electric push rod;

[0025] When the test is a tension test, when the electric push rod is retracted, the cylinder module is adjusted to perform an air outlet operation through the second time relay so that the cylinder module applies tension to the electric push rod.

[0026] In some embodiments, a lifting platform is used to adjust the matching height of the electric push rod and the cylinder module;

[0027] Monitoring equipment is used to collect test data of the electric linear actuator during the testing phase; the test data includes audio and video data, self-locking force data and temperature rise value data.

[0028] To achieve the above-mentioned purpose, another aspect of the present invention provides a method for testing the durability of an electric linear actuator, which is applied to the above-mentioned testing device. The method includes:

[0029] Apply target force to the electric push rod through the cylinder module;

[0030] The controller responds to the test instruction of the operation object, controls the cylinder module to perform air inlet and outlet operations and controls the electric push rod to perform extension and retraction operations;

[0031] During the testing phase, the cylinder module maintains the target force and cooperates with the extension and retraction operations of the electric push rod to perform pushing and pulling operations.

[0032] To achieve the above object, another aspect of an embodiment of the present invention provides an electronic device, which includes a memory and a processor. The memory stores a computer program, and the processor implements the above method when executing the computer program.

[0033] To achieve the above object, another aspect of an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the above method is implemented.

[0034] The embodiments of the present invention include at least the following beneficial effects: The present invention provides an electric push rod durability test device, method, electronic device and storage medium, the device is applied to the electric push rod, the device includes: a cylinder module, for applying a target force to the electric push rod; a controller, for responding to the test instructions of the operation object, controlling the cylinder module to perform air inlet and outlet operations and controlling the electric push rod to perform telescopic operations; wherein, during the test phase, the cylinder module maintains the target force and cooperates with the telescopic operation of the electric push rod to perform push-pull operations. The embodiment of the present invention adopts synchronous coordination of the cylinder air inlet and outlet volume and the push rod movement speed, so that the push-pull operation forms a dynamic balance system, accurately simulating the load characteristics under real working conditions. Compared with traditional testing devices, this solution can improve test efficiency and test accuracy through the rapid response characteristics of the pneumatic system and the synchronous and collaborative control strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 1 is a schematic diagram of a structural example of an electric push rod durability testing device provided by an embodiment of the present invention;

[0036] Figure 2 1 is a schematic diagram of a circuit architecture of an electric push rod durability testing device provided by an embodiment of the present invention;

[0037] Figure 3 A schematic flow chart of a method for testing the durability of an electric push rod provided by an embodiment of the present invention;

[0038] Figure 4 It is a schematic diagram of the hardware structure of the electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present invention. They are merely examples of devices and methods consistent with some aspects of the embodiments of the present invention as detailed in the appended claims.

[0040] It will be understood that the terms "first," "second," and the like used in the present invention may be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are merely used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of," "when," or "in response to a determination."

[0041] The terms "at least one", "plurality", "each", "any", etc. used in the present invention include at least one, two or more, multiple, two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein are for the purpose of describing embodiments of the present invention only and are not intended to limit the present invention.

[0043] On the one hand, referring to Figure 1 , which is a schematic diagram of an optional structural component of an electric linear actuator durability testing device provided by an embodiment of the present invention. Specifically, the electric linear actuator durability testing device 100 according to an embodiment of the present invention may include:

[0044] The cylinder module 101 is used to apply a target force to the electric push rod 102;

[0045] The controller 103 is used to control the cylinder module 101 to perform air inlet and outlet operations and the electric push rod 102 to perform extension and retraction operations in response to a test instruction of the operation object;

[0046] During the test phase, the cylinder module 101 maintains the target force and cooperates with the extension and retraction operation of the electric push rod 102 to perform push and pull operations.

[0047] It should be noted that, in actual applications, the electric push rod durability testing device of the embodiment of the present invention also includes a frame structure for assembling / placing the above-mentioned component structures. The frame structure can be set according to actual needs and is not the core point of the embodiment of the present invention.

[0048] For example, in some specific implementations, the device structure of the embodiments of the present invention can be implemented as follows:

[0049] Cylinder Module: This module utilizes a double-acting cylinder connected to the air source via a pneumatic line. A force sensor is installed at the front end to monitor the applied force in real time. An adjustable clamp is installed at the end of the cylinder actuator to accommodate various sizes of electric actuators.

[0050] Control unit: A PLC controller is integrated with an HMI human-machine interface to control the air inlet and outlet of the cylinder through a solenoid valve group, while establishing a communication control link with the electric push rod driver (such as a motor) through a bus.

[0051] Specifically, in practical applications, the workflow of the device of the present invention can be implemented as follows:

[0052] (1) Initialization phase: The test parameters (such as the number of tests, target force value, telescopic stroke, and action frequency) are set through the HMI, and the controller automatically calculates the cylinder pressure setting value.

[0053] (2) Force loading stage: The cylinder is controlled to extend until it contacts the electric push rod, and a constant target force is maintained through PID regulation; preferably, closed-loop control can be formed through force sensor feedback.

[0054] (3) Durability test phase:

[0055] Electric actuators perform the retraction and extension cycles;

[0056] The cylinder performs dynamic follow-up synchronously, performing auxiliary thrust when the push rod extends and applying reverse pulling force when it retracts

[0057] Automatically pause every N cycles (can be set according to actual needs) to collect audio and video data of the actuator test process, actuator thrust data, actuator drive device temperature data, etc. to verify the test results;

[0058] (4) Termination condition: Automatically shut down when the set number of cycles is reached or poor performance degradation is detected (such as the push rod is stuck, noise occurs, thrust attenuation exceeds the preset range, and temperature exceeds the preset value, etc.).

[0059] The embodiment of the present invention realizes the accelerated life test of the electric push rod under simulated real load conditions through a pneumatic-electric composite loading method. Compared with the traditional pure mechanical loading method, it has the technical advantages of high control accuracy and programmable adjustment of test parameters.

[0060] In some optional embodiments, the cylinder module includes a cylinder and a solenoid valve, and the test instruction includes a manual pressure adjustment instruction. When in the test preparation stage, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, and is specifically used to perform the following operations: in response to the manual pressure adjustment instruction of the operation object, the solenoid valve is powered on and off to control the cylinder to perform air inlet and outlet operations until the force applied by the cylinder to the electric push rod reaches the target force; wherein the manual pressure adjustment instruction is also used to adjust the stroke length of the cylinder; when the solenoid valve is energized, the air inlet of the cylinder is opened and the air outlet is closed for air intake operation; when the solenoid valve is de-energized, the air inlet of the cylinder is closed and the air outlet is opened for air outlet operation.

[0061] For example, in some specific embodiments, during the test preparation stage, it is first necessary to adjust the cylinder air pressure to reach the rated load (i.e., target force) of the electric push rod. Specifically, the controller responds to relevant adjustment instructions. After the solenoid valve is energized, air is taken in through the air inlet of the cylinder (the air outlet is closed), and the cylinder air pressure rises. After the solenoid valve is de-energized, air is discharged from the air outlet of the cylinder (the air inlet is closed), and the cylinder air pressure drops.

[0062] In some optional embodiments, the cylinder module includes a cylinder, a solenoid valve and a constant pressure regulating valve, and the test instruction includes an automatic pressure regulation instruction. When in the test stage, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, and is specifically used to perform the following operations: in response to the automatic pressure regulation instruction of the operation object, continuously collect the real-time force value of the force applied by the cylinder module to the electric push rod; when the real-time force value is not equal to the target force, activate the constant pressure regulating valve through the automatic pressure regulation instruction, so that the constant pressure regulating valve controls the solenoid valve to perform power on and off operations to control the cylinder to perform air inlet and outlet operations until the force value of the force applied by the cylinder to the electric push rod reaches the target force; wherein, when the solenoid valve is energized, the air inlet of the cylinder is opened and the air outlet is closed for air intake operation; when the solenoid valve is de-energized, the air inlet of the cylinder is closed and the air outlet is opened for air outlet operation.

[0063] For example, in some specific implementations, to ensure test accuracy, the cylinder needs to be set to continuously apply a preset constant force (i.e., a target force) to the push rod. This constant force is achieved by controlling the cylinder through a constant-pressure regulating valve that controls a solenoid valve. The internal pressure of the cylinder is always maintained at a preset value (for example, when the internal pressure of the cylinder exceeds the preset value, the constant-pressure regulating valve will automatically release the pressure).

[0064] In some optional embodiments, the device also includes a force sensor and a force display meter; the force sensor is arranged between the electric push rod and the cylinder module, and the force sensor is used to collect the force signal of the force applied by the cylinder module to the electric push rod; the force display meter is used to numerically quantify the force applied by the cylinder module to the electric push rod based on the force signal.

[0065] For example, in some specific implementations, in order to facilitate the operator to intuitively understand the force applied by the cylinder, the force signal can be collected and converted into analog-to-digital signals through a force sensor and a force display meter to achieve numerical quantitative display.

[0066] Specifically, the force sensor can be a strain gauge type force sensor, rigidly connected via a flange between the cylinder piston rod and the actuator end of the electric push rod. The sensor housing is equipped with an anti-torsion guide groove to ensure axial force accuracy. The sensor output can then be connected to a 24-bit high-precision analog-to-digital converter to digitally filter the raw signal (removing noise interference caused by cylinder vibration). Finally, an industrial-grade touch screen can be configured as a force display, capable of displaying both real-time curves (showing force fluctuations) and digital dual-display modes.

[0067] In some optional embodiments, the test instruction includes a start instruction and a test adjustment instruction, the electric push rod includes a motor and a push rod, and the controller includes a first time relay; when the controller responds to the test instruction of the operation object and controls the electric push rod to perform a telescopic operation, it is specifically used to perform the following operations: in response to the start instruction of the operation object, the motor of the electric push rod is connected to a preset DC power supply; wherein the start instruction presets a time node and a time limit for the connection between the motor and the DC power supply; in response to the test adjustment instruction of the operation object, the polarity of the positive and negative voltages of the motor is adjusted through the first time relay to control the motor to perform forward and reverse operations, so that the motor controls the push rod to perform a telescopic operation; wherein, when the motor rotates forward, the push rod is extended; when the motor reverses, the push rod is retracted.

[0068] For example, in some specific implementations, the electric push rod is controlled by a time relay to output a DC power supply, and the polarity of the positive and negative voltages of the electric push rod is changed to control the forward and reverse rotation of the motor, thereby realizing the extension and retraction of the electric push rod.

[0069] In practical applications, a double-pole double-throw relay group (H-bridge structure) can be used as the DC power supply polarity switching core. In addition, the first time relay can use a digital display programmable relay, and then the test command input controller sets the physical knob (for setting the time node) and the membrane button (for selecting the forward and reverse mode). Specifically, the workflow can be implemented as follows:

[0070] (1) Parameter preset stage:

[0071] Through the control panel, you can set: the start time node (such as power on after a 5-second delay), the duration of a single action (such as automatic switching to reverse after 30 seconds of forward rotation), and the total number of test cycles (such as 5000 cycles).

[0072] (2) Start instruction execution:

[0073] After the controller receives the start command, the first time relay starts counting down; when the preset time node is reached, the main contacts of the relay close and the DC power supply is connected to the motor circuit (the initial polarity is forward direction);

[0074] (3) Telescopic cycle control:

[0075] Forward phase: Maintain the preset polarity power supply (such as V+→A terminal, V-→B terminal), and the push rod continues to extend;

[0076] Switching criterion: triggering the polarity switching instruction after the timing of the first time relay reaches the set time limit (such as 30s);

[0077] Reversal stage: The H-bridge relay group switches the contact state (V+→B terminal, V-→A terminal), and the motor runs in the reverse direction to retract the push rod.

[0078] The cycle counter accumulates the number of actions and automatically cuts off the power supply when the total test cycle is reached.

[0079] This embodiment, through the regulation and control of a time relay, enables precise timing control of the electric push rod's telescopic motion. It also implements an automatic cycle counting function. This system is particularly suitable for scenarios requiring high-frequency reciprocating motion testing, such as electric push rods, and can effectively verify the durability of the mechanism and the reliability of the motor's commutation.

[0080] In some optional embodiments, the controller includes a first time relay and a second time relay. When in the testing phase, the controller controls the cylinder module to perform air inlet and outlet operations and controls the electric push rod to perform telescopic operations in response to the test instructions of the operation object. Specifically, the controller is used to perform the following operations: in response to the test instructions of the operation object, the electric push rod is adjusted to perform telescopic operations through the first time relay; the telescopic operations include extension operations and retraction operations; when the test is a pressure test, when the electric push rod is extended, the cylinder module is adjusted to perform air intake operations through the second time relay so that the cylinder module applies pressure to the electric push rod; when the test is a tension test, when the electric push rod is retracted, the cylinder module is adjusted to perform air outlet operations through the second time relay so that the cylinder module applies tension to the electric push rod.

[0081] For example, in some specific embodiments, during operation, a time relay is used to control the timing of the power on and off of the solenoid valve to control the extension and retraction of the cylinder, and the extension and retraction duration of the specific working condition is set by the time relay. The electric push rod is controlled by another time relay to output a DC power supply, and the polarity of the positive and negative voltages of the electric push rod is changed to control the forward and reverse rotation of the motor to achieve the extension and retraction of the electric push rod. Specifically, the timing of the two time relays can be based on the requirements of the test. The cylinder can apply pressure and tension to the electric push rod. If the direction of the cylinder movement is relative to the direction of movement of the electric push rod, it is a pressure test, and if the direction is opposite, it is a tension test. Among them, the timing control logic of the time relay for the power on and off of the solenoid valve is set in conjunction with the logic for the electric push rod. The specific control logic is similar to the specific implementation of the first time relay mentioned above and will not be repeated here.

[0082] In some optional embodiments, the device may also include at least one of the following: a lifting platform for adjusting the matching height between the electric push rod and the cylinder module; a monitoring device for collecting test data of the electric push rod during the testing phase; wherein the test data includes audio and video data, self-locking force data and temperature rise value data.

[0083] For example, in some specific embodiments, the lifting platform can adopt a vertical lifting mechanism of a ball screw driven by a servo motor, and an anti-overturning guide rail is installed at the bottom; in addition, a T-slot array can be set on the surface of the lifting platform, which is compatible with multi-position fixation of pneumatic clamps and push rod mounting bases; and the height adjustment instructions are received through the controller to realize the adjustment of the test height parameters.

[0084] The monitoring equipment can be triggered by a camera to synchronize with the push rod movement (capturing the push rod starting position signal through a photoelectric sensor) to record the full stroke movement status of the push rod; and it can pause after every N extension and retraction cycles, control the cylinder to pressurize at a preset rate, and record the critical force value (i.e., self-locking force) corresponding to the sudden change in the push rod displacement; the surface temperature of the motor can also be monitored using a temperature rise meter.

[0085] Specifically, the fault judgment criteria for the test data collected by the monitoring device can be implemented as follows:

[0086] 1: The push rod load operation should be smooth, without sticking or noise (based on audio and video data);

[0087] 2: The self-locking force of the push rod during and after the load operation should meet the design requirements (self-locking force: when the push rod runs to any stroke point, in the power-off state, it can withstand the rated load under the condition of no displacement);

[0088] 3: The push rod is operated according to the working load until thermal equilibrium is reached, and the surface temperature rise of the push rod motor is ≤80K (the surface temperature of the motor is monitored by a temperature rise meter).

[0089] In order to explain the principle of the technical solution of the present invention in detail, the device structure composition of the present invention and its implementation function logic are described below in combination with some specific embodiments. It is easy to understand that the following is an explanation of the technical principle of the present invention and cannot be regarded as a limitation of the present invention.

[0090] First of all, it should be noted that the durability of the electric linear actuators in current electric beds and electric sofas is basically tested by installing them on the finished product. Different electric linear actuators have different stroke and installation distance parameters, which requires different finished products to be tested with electric linear actuators. The finished product production cycle is long and the materials are relatively wasteful. In view of this, the embodiment of the present invention has developed a vertical electric linear actuator durability testing device, which aims to comprehensively and in-depth verify the reliability of different electric linear actuators, and then make corresponding assessments of product quality, thereby providing strong guarantees for product optimization and consumer use.

[0091] like Figure 2 As shown (only the circuit interaction components of some data signals are shown), the tooling of the testing device of the present invention may include: a cylinder, a constant pressure regulating valve, a solenoid valve, a time relay, a force sensor, a force display meter, a lifting platform, and a DC power supply; specifically, after the solenoid valve is energized, air is taken in through the air inlet of the cylinder (the air outlet is closed), and the support rod of the cylinder is extended; after the solenoid valve is de-energized, air is discharged through the air outlet of the cylinder (the air inlet is closed), and the support rod of the cylinder is retracted.

[0092] The test process based on the device of the present invention can be implemented as follows:

[0093] 1. Install the electric push rods with different strokes and different loads on the lifting platform, adjust the cylinder pressure to reach the rated load of the electric push rod. When adjusting the cylinder pressure, the electric push rod is in a retracted state; after adjusting the cylinder pressure to the rated load of the push rod, the electric push rod begins to extend and retract repeatedly, and the cylinder moves up and down synchronously, and keeps the cylinder pressure at the rated load of the push rod.

[0094] 2. Adjust the time relay so that the push rod can work continuously and cyclically according to the corresponding working time and rest time while maintaining the rated load.

[0095] Specifically, during the working time, the cylinder continuously applies a preset constant force to the push rod. This constant pressure is achieved by controlling the constant pressure regulating valve. The internal pressure of the cylinder is always maintained at the preset value (for example, when the internal pressure of the cylinder exceeds the preset value, the constant pressure regulating valve will automatically release the pressure).

[0096] 3. Observe and record the operating status of the electric linear actuator every day to evaluate its reliability.

[0097] Specifically, the criteria for determining the test results can be implemented as follows:

[0098] The actuator runs 20,000 times under rated load, with a working time mode of S3 20% MAX 2min / 8min (i.e. working for 2min and resting for 8min) or set according to R&D requirements;

[0099] Evaluation of test results: 1: During the test, record whether the push rod has any shaking, sticking, or abnormal noise; 2: Whether the self-locking force of the push rod during and after load operation meets the design requirements; 3: Use a temperature rise meter to monitor the surface temperature of the motor, and the temperature rise value is ≤80K.

[0100] It should be noted that Figure 2 The functional control loop in Figure 1Specifically, during the test, a time relay controls the timing of the solenoid valve's power on and off to control the cylinder's extension and retraction. The time relay sets the extension and retraction duration for specific working conditions. Another time relay controls the DC power output of the electric push rod, which changes the polarity of the positive and negative voltages to control the motor's forward and reverse rotation, thereby extending and retracting the push rod. The timing of the two time relays can be adjusted based on the test requirements. The cylinder can apply pressure and tension to the push rod. If the direction of the cylinder's movement is opposite to the direction of the push rod's movement, a pressure test is being performed; if the directions are opposite, a tension test is being performed.

[0101] It should also be noted that the force value can be changed by switching the control method to manual before the test, adjusting the air pressure in the cylinder pipeline and the length of the cylinder stroke, looking at the force value on the torque display, and after adjusting to the force value required by our product, switching the control method to automatic. At this time, it starts as fully automatic control and the equipment enters the preset cycle test.

[0102] In summary, the present invention aims to develop a vertical electric linear actuator durability testing device to comprehensively and thoroughly verify the reliability of different specifications, thereby making corresponding assessments of product quality, thereby providing strong guarantees for product optimization and consumer use. Specifically, the embodiment of the present invention can install electric linear actuators of different strokes and loads on a lifting platform to simulate a fully loaded push rod usage scenario. After testing, the reliability of the electric linear actuator during its service life can be well assessed, and possible defects and faults can be discovered in a timely manner, thereby enabling timely improvement and optimization of the product.

[0103] On the other hand, an embodiment of the present invention further provides an electric push rod durability test method, which is applied to the aforementioned electric push rod durability test device, and relates to the field of device testing technology. The electric push rod durability test method provided by the embodiment of the present invention can be applied to a terminal, can also be applied to a server, and can also be software running in a terminal or a server. In some embodiments, the terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, and a car terminal, etc., but is not limited to this; the server side can be configured as an independent physical server, or as a server cluster or distributed system composed of multiple physical servers, and can also be configured as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The server can also be a node server in a blockchain network; the software can be an application that implements the electric push rod durability test method, etc., but is not limited to the above forms.

[0104] The present invention can be used in a wide variety of general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, and the like. The present invention can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. The present invention can also be practiced in distributed computing environments in which tasks are performed by remote processing devices connected via a communications network. In a distributed computing environment, program modules can be located in local and remote computer storage media, including storage devices.

[0105] Figure 3 This is an optional flow chart of the electric push rod durability testing method provided by an embodiment of the present invention. Figure 3 The method may include but is not limited to steps S100 to S200.

[0106] S100, applying a target force to the electric push rod through the cylinder module;

[0107] S200, controlling the cylinder module to perform air inlet and outlet operations and controlling the electric push rod to perform extension and retraction operations in response to a test instruction of the operation object by the controller;

[0108] During the testing phase, the cylinder module maintains the target force and cooperates with the extension and retraction operations of the electric push rod to perform pushing and pulling operations.

[0109] It can be understood that the contents of the above-mentioned device embodiments are applicable to the present method embodiments, the process steps specifically implemented by the present method embodiments are the same as the functional logic of the above-mentioned device embodiments, and the beneficial effects achieved are also the same as the beneficial effects achieved by the above-mentioned device embodiments.

[0110] An embodiment of the present invention further provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-described electric actuator durability testing method. The electronic device can be any intelligent terminal, including a tablet computer and an in-vehicle computer.

[0111] It can be understood that the contents of the above method embodiments are applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0112] See also Figure 4 , Figure 4 The hardware structure of an electronic device 1000 according to another embodiment is shown. The electronic device includes:

[0113] The processor 1001 may be implemented as a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute relevant programs to implement the technical solutions provided by the embodiments of the present invention.

[0114] The memory 1002 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 1002 can store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented through software or firmware, the relevant program codes are stored in the memory 1002 and are called by the processor 1001 to execute the electric linear actuator durability testing method of the embodiment of the present invention.

[0115] Input / output interface 1003, used to implement information input and output;

[0116] Communication interface 1004, used to implement communication interaction between this device and other devices, which can be achieved through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WiFi, Bluetooth, etc.);

[0117] Bus 1005 , which transmits information between various components of the device (e.g., processor 1001 , memory 1002 , input / output interface 1003 , and communication interface 1004 );

[0118] The processor 1001 , the memory 1002 , the input / output interface 1003 and the communication interface 1004 are connected to each other in communication within the device via the bus 1005 .

[0119] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the above-mentioned electric push rod durability testing method is implemented.

[0120] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiment, the functions specifically implemented by the present storage medium embodiment are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0121] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely arranged relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0122] Embodiments of the present invention provide a method, device, electronic device, and storage medium for testing the durability of an electric actuator. These methods involve obtaining sleep data from a target subject, including multiple sleep indicators. The sleep data is then divided into scores based on preset baseline values ​​to obtain a score for each sleep indicator. A ranking score for each sleep indicator is obtained based on preset importance coefficients and indicator score statistics. All sleep indicators are then ranked and displayed based on the ranking scores. Through baseline value comparison and weighted calculation of importance coefficients, the present invention automatically identifies the core indicators that are most valuable to the current user, enabling dynamic sorting of report content, breaking the limitations of fixed templates and creating a unique visual flow for each presentation. The present invention prioritizes key indicators through a sorting mechanism, allowing users to grasp the key points without having to browse all the data. The scoring system intuitively displays the health status of each indicator, simplifying the data interpretation process. By establishing a dynamic evaluation and ranking system for sleep indicators, the present invention fundamentally changes the homogeneity of traditional sleep reports, achieving a qualitative shift from "data presentation" to "insight presentation," and significantly enhancing the user experience and value of sleep monitoring products.

[0123] The embodiments described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present invention are also applicable to similar technical problems.

[0124] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present invention, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0125] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0126] Those skilled in the art will appreciate that all or some of the steps, devices, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0127] The terms "first," "second," "third," "fourth," and the like (if any) in the description of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or devices.

[0128] It should be understood that in the present invention, "at least one (item)" refers to one or more, and "plurality" refers to two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can represent: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0129] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0130] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0132] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes multiple instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store programs.

[0133] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. An electric push rod durability testing device, applied to an electric push rod, characterized in that: The device comprises: A cylinder module, used for applying a target force to the electric push rod; A controller, configured to control the cylinder module to perform air inlet and outlet operations and the electric push rod to perform extension and retraction operations in response to a test instruction of an operation object; During the test phase, the cylinder module maintains the target force and cooperates with the telescopic operation of the electric push rod to perform push and pull operations.

2. The device according to claim 1, characterized in that The cylinder module includes a cylinder and a solenoid valve, and the test instruction includes a manual pressure adjustment instruction. When in the test preparation stage, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, specifically for performing the following operations: In response to the manual pressure adjustment instruction of the operation object, the solenoid valve is powered on and off to control the cylinder to perform the air inlet and outlet operations until the force applied by the cylinder to the electric push rod reaches the target force; Among them, the manual pressure adjustment instruction is also used to adjust the stroke length of the cylinder; when the solenoid valve is energized, the air inlet of the cylinder is opened and the air outlet is closed to perform the air intake operation; when the solenoid valve is de-energized, the air inlet of the cylinder is closed and the air outlet is opened to perform the air discharge operation.

3. The device according to claim 1, characterized in that The cylinder module includes a cylinder, a solenoid valve, and a constant pressure regulating valve. The test instruction includes an automatic pressure regulating instruction. When in the test phase, the controller controls the cylinder module to perform air inlet and outlet operations in response to the test instruction of the operation object, specifically for performing the following operations: In response to the automatic pressure regulation instruction of the operation object, continuously collecting the real-time force value of the force applied by the cylinder module to the electric push rod; When the real-time force value is not equal to the target force, the constant pressure regulating valve is activated by the automatic pressure regulation instruction, so that the constant pressure regulating valve controls the solenoid valve to perform power on and off operations to control the cylinder to perform the air inlet and outlet operations until the force value of the force applied by the cylinder to the electric push rod reaches the target force; When the solenoid valve is powered on, the air inlet of the cylinder is opened and the air outlet is closed to perform an air intake operation; when the solenoid valve is powered off, the air inlet of the cylinder is closed and the air outlet is opened to perform an air discharge operation.

4. The device according to any one of claims 1 to 3, characterized in that The device also includes a force sensor and a force display meter; The force sensor is provided between the electric push rod and the cylinder module, and is used to collect a force signal of the force applied by the cylinder module to the electric push rod; The force value display table is used to numerically quantify the force applied by the cylinder module to the electric push rod according to the force value signal.

5. The device according to claim 1, characterized in that The test instruction includes a start instruction and a test adjustment instruction, the electric push rod includes a motor and a push rod, and the controller includes a first time relay; when the controller controls the electric push rod to perform a telescopic operation in response to the test instruction of the operation object, it is specifically used to perform the following operations: In response to the start-up instruction of the operation object, the motor of the electric push rod is connected to a preset DC power supply; wherein the start-up instruction presets a time node and a time limit for the motor to be connected to the DC power supply; In response to the test adjustment instruction of the operation object, adjusting the polarity of the positive and negative voltages of the motor through the first time relay to control the motor to perform forward and reverse rotation operations, so that the motor controls the push rod to perform the extension and retraction operation; When the motor rotates forward, the push rod is extended; when the motor rotates reverse, the push rod is retracted.

6. The device according to claim 1, characterized in that The controller includes a first time relay and a second time relay. When in the test phase, the controller controls the cylinder module to perform air inlet and outlet operations and controls the electric push rod to perform extension and retraction operations in response to the test instruction of the operation object, and is specifically used to perform the following operations: In response to the test instruction of the operation object, regulating the electric push rod to perform the telescopic operation through the first time relay; the telescopic operation includes an extension operation and a retraction operation; When the test is a pressure test, when the electric push rod performs the extension operation, the second time relay is used to adjust the cylinder module to perform an air intake operation, so that the cylinder module applies pressure to the electric push rod; When the test is a tension test, when the electric push rod performs the retraction operation, the cylinder module is adjusted to perform the air outlet operation through the second time relay, so that the cylinder module applies tension to the electric push rod.

7. The device according to claim 1, characterized in that The device further comprises at least one of the following: A lifting platform, used to adjust the matching height of the electric push rod and the cylinder module; Monitoring equipment is used to collect test data of the electric push rod during the test phase; wherein the test data includes audio and video data, self-locking force data and temperature rise value data.

8. A method for testing the durability of an electric linear actuator, characterized in that: Applied to the durability test of the electric linear actuator as claimed in claim 1, the method comprises: Apply target force to the electric push rod through the cylinder module; The controller controls the cylinder module to perform air inlet and outlet operations and controls the electric push rod to perform extension and retraction operations in response to a test instruction of the operation object; During the test phase, the cylinder module maintains the target force and cooperates with the telescopic operation of the electric push rod to perform push and pull operations.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the method according to claim 8 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to claim 8 is implemented.

Images