A testing device and testing method for pressure sensitive products

Abstract

This invention discloses a testing device for pressure-sensitive products. Through the coordinated arrangement of a support base, a pressure-sensitive product placement seat, a support frame assembly, a first driver, a second driver, a pressure sensor, and an impactor, the pressure sensor can be set to a preset pressure value. The second driver controls the impactor to press down a preset step value according to the preset pressure value, bringing it into contact with the test position of the pressure-sensitive product under test. The pressure-sensitive chip on the product under test reads the current pressure value. The control module determines whether the current pressure value is the same as the preset pressure value; if they are the same, the test is passed. The testing device has a simple structure and can perform pressure-sensitive product testing without expensive equipment, achieving a low-cost method. Different combinations of impactors and the second driver can achieve tests of varying accuracy, adapting to different testing environments. Furthermore, the entire test is completed automatically, requiring minimal operator skill.

Description

Technical Field

[0001] This invention relates to the field of pressure-sensitive product testing technology, specifically to a pressure-sensitive product testing device and testing method. Background Technology

[0002] Before being released to the market, pressure-sensitive products must undergo testing to ensure they operate accurately, stably, and reliably in real-world usage scenarios. Testing is not only a necessary part of quality control but also a fundamental guarantee for product functionality and user experience.

[0003] The following types of testing equipment are used in the routine production testing of pressure-sensitive products: Digital pressure calibrators: While they can automate some processes, the equipment is expensive, especially for mass production where costs increase significantly. Piston pressure gauges offer extremely high accuracy, but are bulky, inconvenient to move, and difficult to adapt to field use. Reference sensors / standards: While they can guarantee high accuracy, they are expensive and sensitive to environmental changes.

[0004] Manual or electric pressure pumps: used to generate precise pressure values, but require skilled operators and are less efficient. Summary of the Invention

[0005] Therefore, it is necessary to provide a testing device and method for pressure-sensitive products. This addresses the problems mentioned in the background art, such as the high cost, sensitivity to environmental changes, and the need for skilled operators in existing testing equipment.

[0006] A testing device for pressure-sensitive products includes a support base, a pressure-sensitive product placement seat, a support frame assembly, a first driver, a second driver, a pressure sensor, and an impact component. The pressure-sensitive product placement seat and the support frame assembly are respectively installed at both ends of the support base. The support frame assembly includes a bracket, a guide shaft, and a worktable. The bracket and the guide shaft are respectively installed on the support base. The first driver is installed on the support base, and its other end is fixedly connected to the worktable. The worktable is driven by the first driver to slide along the bracket. The second driver is installed on the worktable. The pressure sensor is installed on the second driver. The impact component is installed on the pressure sensor and corresponds vertically to the pressure-sensitive product placement seat.

[0007] In one embodiment, the first driver has a mounting plate that is detachably connected to the worktable.

[0008] In one embodiment, the testing device for the pressure-sensitive product further includes a moving component, which includes a third driver, a limiting seat, a moving plate, a slide rail, and a slider. The slide rail, the limiting seat, and the third driver are respectively mounted on the worktable. One end of the moving plate is mounted on the slider, and the other end is fixedly connected to the third driver.

[0009] In one embodiment, a limiting groove is provided on the limiting seat, and one end of the movable plate slides within the limiting groove.

[0010] In one embodiment, the first driver and the third driver are cylinders.

[0011] In one embodiment, the second driver is a stepper motor.

[0012] A testing method for a pressure-sensitive product, applied in a testing device for the pressure-sensitive product, the method comprising: Place the pressure-sensitive product to be tested on the pressure-sensitive product placement base; The first driver drives the worktable to a preset position; The pressure sensor sets a preset pressure value and sends it to the control module; The second actuator controls the striking element to press down a preset step value according to the preset pressure value and to abut against the test position of the pressure-sensitive product under test; The pressure-sensitive chip of the pressure-sensitive product under test reads the actual pressure value and sends it to the control module. The control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value. If it is, proceed to the next step. Determine whether the testing equipment needs calibration; if yes, proceed to the next step. The testing equipment is calibrated.

[0013] In one embodiment, The control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value as follows: If the actual pressure value is greater than or less than the preset threshold, the testing device is calibrated; otherwise, the host computer determines that the calibration has failed. In one embodiment, The method for calibrating the testing device is as follows: Move the striking head to a position above the button to be tested, but without making contact with the button; Control the preset step value of the downward pressure of the striking head; Obtain the current pressure value of the pressure sensor at this moment; Calculate the compensation step value: ΔS = (set pressure value - current pressure value) / pressure calibration coefficient, where pressure calibration coefficient = pressure value corresponding to each step; Raise the striking head back to the starting point, then press down the newly calculated step value.

[0014] In one embodiment, when acquiring the current pressure value of the pressure sensor, the current pressure value can be acquired continuously a preset number of times, and it can be determined whether the difference between the first current pressure value and the last current pressure value is less than a preset threshold. If so, the data is considered valid; otherwise, it is resampled.

[0015] The aforementioned pressure-sensitive product testing device, through the coordinated arrangement of a support base, a pressure-sensitive product placement seat, a support frame assembly, a first driver, a second driver, a pressure sensor, and an impactor, allows the pressure sensor to be set with a preset pressure value. The second driver controls the impactor to press down a preset step value according to the preset pressure value and abut against the test position of the pressure-sensitive product under test. The pressure-sensitive chip on the pressure-sensitive product under test reads the current pressure value, and the control module determines whether the current pressure value is the same as the preset pressure value. If they are the same, the test is passed. The testing device has a simple structure and can achieve pressure-sensitive product testing without expensive equipment and instruments, thus achieving low-cost testing. Different combinations of impactors and the second driver can achieve tests with different accuracies, adapting to the testing needs of different environments. At the same time, the entire test is completed automatically, requiring low operator proficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a testing device for a pressure-sensitive product according to an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the moving component structure of a pressure-sensitive product testing device according to an embodiment of the present invention; Figure 3 This is a flowchart of a testing method for a pressure-sensitive product according to an embodiment of the present invention. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly" connected to another component, there is no intermediary component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] like Figure 1 , Figure 2 As shown, a testing device for pressure-sensitive products includes a support base 1, a pressure-sensitive product placement seat 2, a support frame assembly 3, a first driver 4, a second driver 5, a pressure sensor 6, and an impactor 7. The pressure-sensitive product placement seat 2 and the support frame assembly 3 are respectively installed at both ends of the support base 1. The support frame assembly 3 includes a bracket 31, a guide shaft 32, and a worktable 33. The bracket 31 and the guide shaft 32 are respectively installed on the support base 1. The first driver 4 is installed on the support base 1, and its other end is fixedly connected to the worktable 33. The worktable 33 is driven by the first driver 4 to slide along the bracket 31. The second driver 5 is installed on the worktable 33. The pressure sensor 6 is installed on the second driver 5. The impactor 7 is installed on the pressure sensor 6 and corresponds vertically to the pressure-sensitive product placement seat 2.

[0021] The first driver 4 is a cylinder, and the second driver 5 is a stepper motor. The first driver 4 has a mounting plate 41, which is detachably connected to the worktable 33. The mounting plate 41 is mounted on the telescopic rod of the first driver 4. During the movement of the telescopic rod controlled by the first driver 4, the worktable 33 is moved vertically through the mounting plate 41, adjusting the worktable 33 to a preset height. The pressure sensor 6 is set with a pressure value adapted to the test component. The impact component 7 can be replaced according to different test products, making the device more versatile.

[0022] When testing a pressure-sensitive product, the product to be tested is placed on the pressure-sensitive product placement seat 2. A preset pressure value is set on the pressure sensor 6 according to the test component. The second driver 5 controls the striking element 7 to press down a preset step value according to the preset pressure value, bringing it into contact with the test position of the pressure-sensitive product. The pressure-sensitive chip on the product reads the current pressure value. The control module determines whether the current pressure value is the same as the preset pressure value. If they are the same, the test passes. If they are different, it determines whether the current pressure value is less than a preset threshold set on the control module. If the current pressure value is less than the preset threshold, the fit of the pressure-sensitive chip of the product is considered abnormal, and an error message is sent to the host computer via the control module. If the current pressure value is greater than the preset threshold but less than the preset pressure value, the control module sends a message to the host computer indicating that the device needs calibration.

[0023] In this way, the pressure-sensitive product testing device, through the coordinated arrangement of the support base 1, pressure-sensitive product placement seat 2, support frame assembly 3, first driver 4, second driver 5, pressure sensor 6, and impact element 7, allows the pressure sensor 6 to be set with a preset pressure value. The second driver 5 controls the impact element 7 to press down a preset step value according to the preset pressure value and abut against the test position of the pressure-sensitive product under test. The pressure-sensitive chip on the pressure-sensitive product under test reads the current pressure value, and the control module determines whether the current pressure value is the same as the preset pressure value. If they are the same, the test is passed. The testing device has a simple structure and can realize the testing of pressure-sensitive products without expensive equipment and instruments, achieving a low-cost way to complete the testing of pressure-sensitive products. Different combinations of impact element 7 and second driver 5 can achieve tests with different accuracies, adapting to the testing needs of different environments. At the same time, the entire test is completed automatically, requiring low operator proficiency.

[0024] In one embodiment, in order to test multiple components of a pressure-sensitive product on the same device, the testing device for the pressure-sensitive product further includes a moving component 8. The moving component 8 includes a third actuator 81, a limiting seat 82, a moving plate 83, a slide rail 84, and a slider 85. The slide rail 84, the limiting seat 82, and the third actuator 81 are respectively mounted on the worktable 33. One end of the moving plate 83 is mounted on the slider 85, and the other end is fixedly connected to the third actuator 81. A limiting groove 821 is formed on the limiting seat 82, and one end of the moving plate 83 slides in the limiting groove 821. The third actuator 81 is a cylinder.

[0025] When different components of a pressure-sensitive product need to be tested, the third driver 81 is activated. The third driver 81 controls the moving plate 83 to move on the limit seat 82, thereby moving the second driver 5, pressure sensor 6, and impact component 7 to a preset position, so that the impact component 7 corresponds to the component to be tested in the pressure-sensitive product in the vertical direction. This allows the different components of the pressure-sensitive product to be tested, and the testing efficiency is higher.

[0026] A testing method for a pressure-sensitive product, applied in a testing device for the pressure-sensitive product, the method comprising: S1. Place the pressure-sensitive product to be tested on the pressure-sensitive product placement seat 2; align the component to be tested of the pressure-sensitive product with the striking component 7 in the vertical direction. S2, The first driver 5 drives the worktable 33 to the preset position; S3, Pressure sensor 6 sets a preset pressure value and sends it to the control module; the control module converts the preset pressure value into a step value and sends it to the second driver 5; S4. The second driver 5 controls the striking element 7 to press down a preset step value according to the preset pressure value and to abut against the test position of the pressure-sensitive product to be tested. S5. The pressure-sensitive chip of the pressure-sensitive product under test reads the actual pressure value and sends it to the control module. S6. The control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value. If so, proceed to the next step. S61, the method by which the control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value is as follows: The system determines whether the actual pressure value is greater than or less than the preset threshold. If so, the testing device is calibrated; otherwise, the host computer determines that the calibration has failed. For example, if the preset pressure value is 500 grams and the preset threshold is 200 grams, then the actual pressure value should also be 500 grams under normal circumstances. If the actual pressure value is 300 grams, it proves that the pressure value is inaccurate and the device needs to be calibrated. If the actual pressure value is 100 grams, then the adhesion of the pressure-sensitive chip is abnormal, and the host computer determines that the calibration has failed, requiring the pressure-sensitive product under test to be inspected.

[0027] S7. Determine whether the test device needs to be calibrated. If yes, proceed to the next step. S8. Calibrate the testing device.

[0028] The method for calibrating the testing device is as follows: S81. Move the striking head 7 to a position above the button to be tested but not in contact with the button to be tested (origin). S82, control the downward pressure of the striking head 7 by a preset step value (e.g., 500 steps). S83. Obtain the current pressure value of pressure sensor 6 (e.g., 50 grams). S84. Calculate the compensation step value: ΔS = (set pressure value - current pressure value) / pressure calibration coefficient, pressure calibration coefficient = pressure value corresponding to each step; for example, the set pressure value is 500 grams, the current pressure value is 50 grams, and the pressure calibration coefficient is 0.1 grams / step; S85, lift the striking head back to the origin, and then press down the newly calculated step value.

[0029] New step value = 500 + (500 - 50) / 0.1 = 5000 In one embodiment, when acquiring the current pressure value of the pressure sensor, the current pressure value can be acquired continuously a preset number of times, and it can be determined whether the difference between the first current pressure value and the next current pressure value is less than a preset threshold. If so, the data is considered valid; otherwise, it is resampled.

[0030] Thus, for example, if the preset threshold is 1 gram, if the difference is > 1 gram: resample; if the difference is ≤ 1 gram: the data is valid, making the calibration more accurate.

[0031] For example, the first fine-tuning: deviation calculation: ΔF = target value - current value (e.g., 500-504=-4 grams). The number of adjustment steps required is -4 / 0.1=-40 steps. The new position is 5000-40=4960 steps.

[0032] Second fine-tuning: The measured weight is 499.5 grams. The number of adjustment steps required is 0.5 / 0.1 = 5 steps. The new position requires 4960 + 5 = 4965 steps to achieve the target accuracy (error 0.5 grams < 1 gram).

[0033] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A testing device for pressure-sensitive products, characterized in that: The device includes a support base, a pressure-sensitive product placement seat, a support frame assembly, a first driver, a second driver, a pressure sensor, and an impact component. The pressure-sensitive product placement seat and the support frame assembly are respectively installed at both ends of the support base. The support frame assembly includes a bracket, a guide shaft, and a worktable. The bracket and the guide shaft are respectively installed on the support base. The first driver is installed on the support base, and its other end is fixedly connected to the worktable. The worktable is driven by the first driver to slide along the bracket. The second driver is installed on the worktable. The pressure sensor is installed on the second driver. The impact component is installed on the pressure sensor and corresponds vertically to the pressure-sensitive product placement seat.

2. The testing device for pressure-sensitive products according to claim 1, characterized in that: The first driver has a mounting plate that is detachably connected to the worktable.

3. The testing device for pressure-sensitive products according to claim 1, characterized in that: The testing device for the pressure-sensitive product also includes a moving component, which includes a third driver, a limiting seat, a moving plate, a slide rail, and a slider. The slide rail, the limiting seat, and the third driver are respectively mounted on the worktable. One end of the moving plate is mounted on the slider, and the other end is fixedly connected to the third driver.

4. The testing device for pressure-sensitive products according to claim 3, characterized in that: The limiting seat has a limiting groove, and one end of the moving plate slides in the limiting groove.

5. The testing device for pressure-sensitive products according to claim 3, characterized in that: The first driver and the third driver are cylinders.

6. The testing device for pressure-sensitive products according to claim 1, characterized in that: The second driver is a stepper motor.

7. A testing method for pressure-sensitive products, characterized in that, A test method applied to a test apparatus for a pressure-sensitive product as described in any one of claims 1 to 6, the method comprising: Place the pressure-sensitive product to be tested on the pressure-sensitive product placement base; The first driver drives the worktable to a preset position; The pressure sensor sets a preset pressure value and sends it to the control module; The second actuator controls the striking element to press down a preset step value according to the preset pressure value and to abut against the test position of the pressure-sensitive product under test; The pressure-sensitive chip of the pressure-sensitive product under test reads the actual pressure value and sends it to the control module. The control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value. If it is, proceed to the next step. Determine whether the testing equipment needs calibration; if yes, proceed to the next step. The testing equipment is calibrated.

8. The testing method for a pressure-sensitive product according to claim 7, characterized in that: The control module determines whether the fit of the pressure-sensitive chip of the pressure-sensitive product under test is normal based on the preset pressure value and the actual pressure value as follows: If the actual pressure value is greater than or less than the preset threshold, the testing device is calibrated; otherwise, the host computer determines that the calibration has failed.

9. A testing method for a pressure-sensitive product according to claim 8, characterized in that: The method for calibrating the testing device is as follows: Move the striking head to a position above the button to be tested, but without making contact with the button; Control the preset step value of the downward pressure of the striking head; Obtain the current pressure value of the pressure sensor at this moment; Calculate the compensation step value: ΔS = (set pressure value - current pressure value) / pressure calibration coefficient, where pressure calibration coefficient = pressure value corresponding to each step; Raise the striking head back to the starting point, then press down the newly calculated step value.

10. A testing method for a pressure-sensitive product according to claim 9, characterized in that: When acquiring the current pressure value of the pressure sensor, the current pressure value can be acquired continuously a preset number of times, and it can be determined whether the difference between the first current pressure value and the last current pressure value is less than a preset threshold. If it is, the data is considered valid; otherwise, it is resampled.

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