A testing device and method for a self-adjustable multifunctional flexible monitoring sensor

Abstract

This invention discloses a self-adjustable multifunctional flexible monitoring sensor testing device and method. One side of the flexible monitoring sensor is held by a specific clamp, which is fixed to the rear side of a rotatable mechanism via a key connection, rotating along the mechanism's axis. The main shaft of the rotatable mechanism maintains stable rotation through two fixed deep groove ball bearings. A servo motor is connected to the front side via a reduction coupling to drive the flexible monitoring sensor to achieve a relatively stable rotational bending function in a predetermined direction. The other side is fixed to a horizontally reciprocating upper connecting frame via a cam compression clamp with a friction contact surface. The upper connecting frame has a graduated vernier scale, which is fixed by screws to achieve both movement and fixation. It is attached to a lower fixed frame with a main scale function. The upper connecting frame is manually moved back and forth to stretch the flexible monitoring sensor. The flexible monitoring sensor transmits its changing data to a computer for storage and processing via experimentally designed electrodes.

Description

Technical Field

[0001] This invention relates to the field of flexible monitoring sensing devices and their testing methods, and more particularly to a self-adjusting multifunctional flexible monitoring sensor testing device and its testing method. Background Technology

[0002] Flexible monitoring and sensing is an emerging monitoring and sensing method with greater practical application prospects. Research on flexible monitoring sensors is of great significance for the development of technologies such as robotics, wearable medical monitoring, and human-computer interaction.

[0003] Currently, common methods for testing the performance of flexible monitoring sensors include single-pass tensile testing, single-bending testing, reciprocating tensile testing, and cyclic bending testing. However, each of these methods can only perform one test at a time and is difficult to repeat, requiring the flexible sensor to be re-clamped, fixed, and adjusted. This wastes a significant amount of time on unnecessary work, and the repetitive clamping work can lead to inconsistent test conditions. Consequently, the collected tensile and bending signals may not accurately reflect the characteristics of the flexible monitoring sensor, and could even damage the sensor's electrodes.

[0004] Traditional testing equipment can usually only perform one type of test and is difficult to complete a large number of repetitive tasks. It relies on the precision of processing and installation to control the performance of flexible monitoring sensors and cannot guarantee the accuracy of the test work.

[0005] Therefore, ensuring that the entire testing process can be repeated extensively while maintaining its self-adjustment and accuracy, as well as simultaneously conducting tensile or bending tests in multiple dimensions, have become significant technical challenges. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a self-adjusting multifunctional flexible monitoring sensor testing device, which can increase the testing methods and dimensions of flexible monitoring sensor performance, improve the authenticity and accuracy of flexible monitoring sensor performance testing, and has a simple structure.

[0007] Meanwhile, the present invention also provides a test method for a self-adjustable multifunctional flexible monitoring sensor, which can improve the authenticity and accuracy of the performance test of the flexible monitoring sensor, and is simple to operate.

[0008] The technical solution of the present invention is as follows: A self-adjustable multifunctional flexible monitoring sensor testing device includes a servo motor, a reduction coupling, a fixed support base plate, a motor support seat, a bearing seat, a rotating spindle, a rotating functional fixture, a reciprocating displacement functional fixture, an upper connecting frame, and a lower fixed frame; wherein, the rotating functional fixture and the displacement functional fixture are respectively located on both sides of the flexible monitoring sensor being held, the bottom of the rotating functional fixture is provided with electrodes for circuit connection, and the reciprocating displacement functional fixture has a friction contact surface; the reduction coupling is located between the servo motor and the rotating spindle, and is used to maintain a horizontal connection between the two and to perform rotational bending function testing of the flexible monitoring sensor; the servo motor is set at the upper end of the fixed support plate to maintain its horizontal transmission of power and torque; the upper connecting frame has a reciprocating displacement fixture fixed on it, and its lower end is connected to the lower fixed frame, and it has a graduated "vernier scale" that can move horizontally back and forth on the lower fixed frame; the lower fixed frame has fixing screws for the horizontal movement and fixation of the "vernier scale", and at the same time, it works with the "main scale" to form a spatial structure with vernier caliper function. The lower fixing frame is fixed to the fixed support base plate with screws to ensure the stability and reliability of the above-mentioned parts. The rotating functional fixture drives the lower flexible monitoring sensor to perform linear reciprocating horizontal motion or rotational bending motion relative to a fixed angle or number of turns relative to the stationary reciprocating functional fixture. At the same time, the electrodes on the flexible monitoring sensor maintain tension and bending signal acquisition through the circuit on the fixture with the signal acquisition system and computer.

[0009] The self-adjustable multifunctional flexible monitoring sensor testing device includes: a rotary clamp fixed to a rotating spindle via threads, which rotates radially along its axis without axial displacement; the rotary clamp is provided with a clamp base, an upper clamping plate, a lower clamping plate, a rubber pad, a spring, and a locking bolt; the engagement position of the upper and lower clamping plates is exactly aligned with the axis of the rotating spindle to ensure that the clamped object can be fixed along a predetermined length; the rotary clamp is connected to the bottom of the base and is used to adjust the upper and lower contact surfaces of the flexible monitoring sensor around the axis of the rotating spindle.

[0010] The self-adjustable multifunctional flexible monitoring sensor testing device includes a rotating spindle fixed to a motor support and a bearing seat by two deep groove ball bearings. The front end of the rotating spindle is fixed and positioned by parts such as parallel keys and sleeves. The rotating spindle receives and transmits motion through a reduction coupling, and is used to rotate the functional fixture to complete the bending test of the flexible monitoring sensor.

[0011] The self-adjustable multifunctional flexible monitoring sensor testing device includes: a servo motor fixed to a support base plate by hexagonal bolts; the servo motor spindle, the rotary spindle, and the rotary function fixture displacement are on the same axis; and the servo motor has an automatic speed adjustment function to control the bending angle and number of turns, ensuring the stability and accuracy of the motion.

[0012] The reciprocating clamp is located directly above the upper connecting frame and is fixed by bolts. This clamp only needs to move axially along the axis of the rotating spindle and does not require radial rotation. The clamp includes a cam mechanism, a clamp base, a clamp moving block, a clamp fixing block, hexagonal socket head cap screws, a vernier scale, and fixing bolts. Rotating the handle moves the cam mechanism, which pushes the clamp moving block through a slot. The horizontal fixation of the flexible monitoring sensor is achieved through compression with the clamp fixing block. The lower connecting surface of the clamp is connected to the top of the upper connecting frame base and is used to adjust the contact surface of the upper and lower specimens around the axis of the reciprocating clamp.

[0013] The self-adjustable multifunctional flexible monitoring sensor testing device includes: the top end of the upper connecting frame is connected to the reciprocating clamp, and its bottom end is fixedly connected to the lower fixed frame. The upper connecting frame is located directly below the clamp and is used to adjust its height by changing its Z-axis height to ensure that the centers of the two clamps are at the same height. It can reciprocate along the X-axis on the lower connecting frame. The fixing bolt ensures that its position can be fixed by manual adjustment. It has a graduated "vernier scale" and forms a spatial structure with vernier caliper function with the "main scale" on the lower connecting plate below it. The connection between the two structures must be kept horizontal and stable.

[0014] The self-adjustable multifunctional flexible monitoring sensor testing device, wherein: the upper connecting frame for Z-direction displacement is located on the lower fixed frame for X-direction displacement, used to adjust the displacement of the upper connecting frame relative to the lower fixed frame in the X direction, used for tensile function testing, and the scale on it, similar to that of a vernier caliper, can clearly indicate the distance of the tensile displacement.

[0015] The self-adjustable multifunctional flexible monitoring sensor testing device includes a servo motor, a motor support, a bearing seat, and a lower fixed plate, all mounted on a fixed support plate to support the motor support, bearing seat, rotating spindle, rotating functional fixture, reciprocating functional fixture, and upper connecting frame.

[0016] The self-adjustable multifunctional flexible monitoring sensor testing device includes a point half on the rotary function fixture and the reciprocating function fixture, which are locked and fixed by locking screws, for adjusting the relative position of the flexible monitoring sensor specimen with respect to the entire device along the axis of the lower rotation main shaft.

[0017] A testing method for a self-adjustable multifunctional flexible monitoring sensor testing device, comprising testing the electrical signals acquired by the flexible monitoring sensor under tension and bending using the testing device of any one of the above-mentioned self-adjustable multifunctional flexible monitoring sensor testing devices, specifically including the following steps: A. Clamping and fixing the flexible monitoring sensor to be tested; B. Adjust the position of the flexible monitoring sensor under test and select the test method (including two different methods: tension and bending). C. The above two methods allow for manual movement of the connecting plate to perform displacement operations, or the activation of a servo motor to perform bending and rotation operations. The data acquisition device collects the changing signals, which are then amplified and analyzed on a computer.

[0018] This invention provides a self-adjustable multifunctional flexible monitoring sensor testing device and method. Utilizing a servo motor, the rotation of the rotary fixture is precisely controlled via a reduction coupling. The fixture's opening and closing function is ensured by a high-elasticity spring, and a high-friction rubber pad is attached to guarantee a tight fit during rotational stretching. A vernier caliper function is employed for the reciprocating stretching motion, with a graduated "main scale" fixed to the lower fixed frame and a graduated "vernier scale" fixed to the upper connecting frame, ensuring measurement accuracy. Simultaneously, during repeated rotational and reciprocating stretching motions, the device improves the authenticity and accuracy of tensile or bending test characteristic data in multiple dimensions, while maintaining a simple structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention; Figure 2 This is a schematic diagram of the rotating fixture components in an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention; Figure 3 This is a schematic diagram of the reciprocating clamp component in an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention; in, Figures 1-3The names of the components used in the above are as follows: 1. Servo motor; 2. Gearbox coupling; 3. Fixed support base plate; 4. Motor support seat; 5. Bearing seat; 6. Rotary spindle; 7. Rotary function rubber clamp; 8. Reciprocating function clamp; 9. Upper connecting frame; 10. Lower fixed frame; 11. Rotary function clamp base; 12. Locking bolt; 13. Spring; 14. Lower clamp plate; 15. Rubber pad; 16. Upper clamp plate; 17. Cam device; 18. Reciprocating function clamp base; 19. Clamp moving block; 20. Clamp fixing block; 22. Socket head bolt; 23. Vernier function ruler; 24. Fixing bolt. Detailed Implementation

[0020] The specific embodiments and examples of the present invention will be described in detail below with reference to the accompanying drawings. The specific embodiments described are only used to explain the present invention and are not intended to limit the specific embodiments of the present invention.

[0021] like Figure 1 As shown, Figure 1 This is a schematic diagram of an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention. The self-adjustable multifunctional flexible monitoring sensor testing device includes a servo motor 1, a reduction coupling 2, a fixed support base plate 3, a motor support seat 4, a bearing seat 5, a rotating spindle 6, a rotating functional fixture 7, a reciprocating displacement functional fixture 8, an upper connecting frame 9, and a lower fixed frame 10. The rotating functional fixture 7 and the displacement functional fixture 8 are respectively located on both sides of the flexible monitoring sensor being held. The bottom of the rotating functional fixture 7 is provided with electrodes connected to a circuit, and the reciprocating displacement functional fixture 8 has frictional contact. The reduction coupling 2 is located between the servo motor 1 and the rotating spindle 6, used to maintain a horizontal connection between the two and to perform rotational bending function testing of the flexible monitoring sensor. The servo motor 1 is set on the upper end of the fixed support plate 3 to maintain its horizontal transmission of power and torque. The upper connecting frame 9 has a reciprocating clamp 8 fixed on it, and its lower end is connected to the lower fixed frame 10. It has a graduated vernier scale that can move horizontally back and forth on the lower fixed frame. The lower fixed frame has fixing screws for the horizontal movement and fixation of the vernier scale, and at the same time, it works with the main scale to form a spatial structure with vernier caliper function. The lower fixed frame 10 is fixed to the fixed support base plate 3 by screws to ensure the stability and reliability of the above parts. The rotating function clamp 7 drives the lower flexible monitoring sensor to perform linear reciprocating horizontal movement or rotational bending movement relative to a fixed angle or number of turns relative to the stationary reciprocating function clamp. At the same time, the electrodes on the flexible monitoring sensor maintain tension and bending signal acquisition through the circuit on the clamp and the signal acquisition system and computer.

[0022] The present invention provides a self-adjustable multifunctional flexible monitoring sensor testing device and its testing method. By employing a servo motor 1, the rotation of the rotary fixture 7 is precisely controlled by a reduction coupling 2. The opening and closing function of the fixture is ensured by a high-elasticity spring 12, and a rubber pad 15 with a high coefficient of friction is attached to ensure a tight fit during rotational stretching. In the reciprocating stretching motion, a vernier caliper function is used on the reciprocating displacement fixture 8. A graduated "main scale" is fixed to the lower fixed frame 10, and a graduated "vernier scale" is fixed to the upper connecting frame 9, ensuring measurement accuracy. Simultaneously, during repeated rotational and reciprocating stretching motions, the device improves the authenticity and accuracy of tensile or bending test characteristic data in multiple dimensions, while maintaining a simple structure.

[0023] Combination Figure 2 As shown, Figure 2 This is a schematic diagram of the rotating functional fixture components in an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention: Further, the rotating functional fixture is connected to the rotating spindle 6 via a rotating functional fixture base 11. The upper clamping plate 16 and the lower clamping plate 14 open and close via a spring 13, which has a rubber pad 15 attached to it to ensure that the upper and lower clamping plates can fit tightly under pressure.

[0024] Preferably, the servo motor 1 spindle, the rotary spindle 6, and the rotary functional fixture displacement are on the same axis. The servo motor 1 has an automatic speed adjustment function to control the bending angle and number of turns, ensuring the stability and accuracy of the motion. The front end of the rotary spindle 6 is fixed and positioned by parts such as parallel keys and sleeves. The rotary spindle 6 receives and transmits motion through the reduction coupling 2, which is used by the rotary functional fixture 7 to complete the bending test of the flexible monitoring sensor.

[0025] Preferably, the engagement position of the upper and lower clamping plates of the rotary functional fixture is exactly aligned with the axial direction of the rotary spindle 6, ensuring that the clamped object can be fixed along the predetermined length direction. The rotary functional fixture 6 is connected to the bottom of the base and is used to adjust the upper and lower contact surfaces of the flexible monitoring sensor around the axis of the rotary spindle 6. The rotating handle rotates the moving cam mechanism, which pushes the fixture moving block to move through the slot. The horizontal fixation of the flexible monitoring sensor is achieved by squeezing it with the fixture fixing block.

[0026] Combination Figure 3 As shown, Figure 3This is a schematic diagram of the reciprocating clamp components in an embodiment of the self-adjustable multifunctional flexible monitoring sensor testing device of the present invention: Preferably, the top end of the upper connecting frame 9 is connected to the reciprocating clamp 8, and its bottom end is fixedly connected to the lower fixed frame 10. The upper connecting frame 9 is located directly below the clamp and is used to adjust its height by changing its own Z-axis height to ensure that the centers of the two clamps are at the same height. It can achieve reciprocating movement along the X-axis on the lower connecting frame 10. The fixing bolt 24 ensures that its position can be fixed by manual adjustment. It has a "vernier scale" with graduations, which forms a spatial structure with vernier caliper function with the "main scale" on the lower connecting plate below it. The connection of the two structures ensures horizontal stability and the accuracy of the reciprocating movement test.

[0027] Preferably, the reciprocating fixture 8 uses a rotating handle to rotate the cam mechanism 17, which pushes the fixture moving block 19 to move via a slot. The horizontal fixation of the flexible monitoring sensor is achieved through compression with the fixture fixing block 20. The lower connecting surface of the fixture is connected to the top of the upper connecting frame 9 base, used to adjust the contact surface of the upper and lower specimens around the axis of the reciprocating fixture. The reciprocating fixture base 18 is connected to the upper connecting frame 9 via hexagonal bolts. The reciprocating fixture 8 and the upper connecting frame 9 move through a locking mechanism 10 via a protrusion.

[0028] Step S610: Clamp and fix one side of the flexible monitoring sensor to be tested with the rotary functional fixture 7: Press the upper clamping plate 16 and the lower clamping plate 14 to clamp it, place the flexible monitoring sensor on the rubber pad 15, and loosen the clamping plates to fix it to prevent it from moving when bending or stretching; clamp and fix the other side with the displacement reciprocating functional fixture 8: Place the flexible monitoring sensor between the fixture moving block 19 and the fixture fixing block 20 by adjusting the rotating handle of the cam device 17, and then fix it by rotating the rotating handle of the cam device 17.

[0029] Step S620: Perform a tensile test. Without turning on the servo motor 1, manually move the upper connecting frame 9 to make it horizontally displace in the X direction along the horizontal track of the lower fixed frame 10. The displacement is measured by forming a simple spatial vernier caliper using the scale on the vernier function scale on the upper connecting frame 9 and the scale on the main scale function scale on the lower fixed frame 10.

[0030] Step S630: By adjusting the height of the upper connecting frame 9, the gaps between the flexible monitoring sensor under test and the clamping plate of the rotary functional fixture 7 and between the clamping moving block 19 and the clamping fixing block 20 on the reciprocating functional fixture 8 are located at the same Y-direction height.

[0031] Step S640: Perform a bending test by fixing the upper connecting frame 9 onto the track of the lower fixed frame 10, ensuring it is in a suitable position. Turn on the servo motor 1 to drive the rotating spindle 6, the reduction coupling 2, and the rotating functional fixture 7 to rotate, causing the flexible monitoring sensor under test to bend at any angle or any number of turns.

[0032] Step S650: The flexible monitoring sensor under test deforms during the stretching or bending motion, and the internal resistance changes. Under the action of a fixed voltage or fixed current from the source meter, a change signal is generated. The change signal is then collected by the acquisition device and analyzed and recorded on the computer using a signal amplifier.

[0033] It should be understood that the above description is only a preferred embodiment of the present invention and is not intended to limit the technical solutions of the present invention. For those skilled in the art, within the spirit and principles of the present invention, additions, subtractions, substitutions, transformations or improvements can be made based on the above description. All such additions, subtractions, substitutions or improvements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A self-adjustable multifunctional flexible monitoring sensor testing device, characterized in that: The system includes a servo motor, a reduction coupling, a fixed support base plate, a motor support seat, a bearing seat, a rotating spindle, a rotating functional fixture, a reciprocating displacement functional fixture, an upper connecting frame, and a lower fixed frame. The rotating and displacement functional fixtures are located on opposite sides of the flexible monitoring sensor being held. The rotating fixture has electrodes for circuit connection at its bottom, and the reciprocating displacement functional fixture has a friction contact surface. The reduction coupling is located between the servo motor and the rotating spindle, maintaining a horizontal connection between them for testing the rotational bending function of the flexible monitoring sensor. The servo motor is positioned on the upper end of the fixed support plate, maintaining its horizontal transmission of power and torque. The upper connecting frame has a fixed reciprocating displacement fixture. The moving fixture, with its lower end connected to the lower fixed frame, has a graduated vernier scale that can reciprocate horizontally on the lower fixed frame. The lower fixed frame has fixing screws for horizontal movement and fixation of the vernier scale, and together with the main scale, forms a spatial structure with vernier caliper functionality. The lower fixed frame is fixed to the fixed support base plate by screws to ensure the stability and reliability of the above parts. The rotating functional fixture drives the lower flexible monitoring sensor to perform linear reciprocating horizontal movement relative to the stationary reciprocating moving functional fixture, or rotational bending movement relative to a fixed angle or number of turns. At the same time, the electrodes on the flexible monitoring sensor maintain tension and bending signal acquisition through the circuit on the fixture, connected to the signal acquisition system and computer.

2. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The rotary functional fixture is fixed to the rotating spindle by threads. It rotates radially along its axis without axial displacement. The rotary functional fixture is equipped with a fixture base, an upper clamping plate, a lower clamping plate, a rubber pad, a spring, and a locking bolt. The engagement position of the upper and lower clamping plates is exactly aligned with the axis of the rotating spindle, ensuring that the clamped object can be fixed along a predetermined length. The rotary functional fixture is connected to the bottom of the base and is used to adjust the upper and lower contact surfaces of the flexible monitoring sensor around the axis of the rotating spindle.

3. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The rotating spindle is fixed to the motor support and bearing housing by two deep groove ball bearings. The front end of the rotating spindle is fixed and positioned by parts such as parallel keys and sleeves. The rotating spindle receives and transmits motion through a reduction coupling, and is used to rotate the functional fixture to complete the bending test of the flexible monitoring sensor.

4. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The servo motor is fixed to the support base plate by hexagon socket bolts. The servo motor spindle, the rotary spindle, and the rotary function fixture displacement are on the same axis centerline. The servo motor has an automatic speed adjustment function to control the bending angle and number of turns, ensuring the stability and accuracy of the movement.

5. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The reciprocating clamp is located directly above the upper connecting frame and is fixed by bolts. The reciprocating clamp only needs to move axially along the axis of the rotating spindle and does not need to rotate radially. The reciprocating clamp is equipped with a cam device, a reciprocating clamp base, a clamp moving block, a clamp fixing block, hexagon socket head cap screws, a vernier scale, and fixing bolts. It rotates the cam mechanism by rotating the handle, which pushes the clamp moving block to move through the slot. The horizontal fixation of the flexible monitoring sensor is achieved by pressing against the clamp fixing block. The lower connecting surface of the clamp is connected to the top of the upper connecting frame base and is used to adjust the contact surface of the upper and lower specimens around the axis of the reciprocating clamp.

6. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The top of the upper connecting frame is connected to the reciprocating clamp, and its bottom is fixedly connected to the lower fixed frame. The upper connecting frame is located directly below the clamp and is used to adjust the height by changing its own Z-axis height to ensure that the centers of the two clamps are at the same height. It can reciprocate along the X-axis on the lower connecting frame. The fixing bolt ensures that its position can be fixed by manual adjustment. It has a vernier scale with graduations, which forms a spatial structure with vernier caliper function with the main scale on the lower connecting plate below. The connection between the two structures must be kept horizontal and stable.

7. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The upper connecting frame for Z-direction displacement is located on the lower fixed frame for X-direction displacement. It is used to adjust the displacement of the upper connecting frame relative to the lower fixed frame in the X direction, and is used for testing the tensile function. The scale on it, which is similar to that of a vernier caliper, can clearly indicate the distance of the tensile displacement.

8. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The servo motor, motor support, bearing housing, and lower fixing plate are all mounted on the fixed support plate and are used to support the motor support, bearing housing, rotary spindle, rotary function fixture, reciprocating function fixture, and upper connecting frame.

9. The self-adjustable multifunctional flexible monitoring sensor testing device according to claim 1, characterized in that: The rotary function fixture and the reciprocating function fixture are provided with a half-point and are locked and fixed by locking screws, which are used to adjust the relative position of the flexible monitoring sensor specimen with respect to the whole device along the axis of the lower rotary spindle.

10. A testing method for a self-adjustable multifunctional flexible monitoring sensor testing device, comprising testing the electrical signals acquired by the flexible monitoring sensor under tension and bending using the self-adjustable multifunctional flexible monitoring sensor testing device as described in any one of claims 1-9, specifically including the following steps: A. Clamping and fixing the flexible monitoring sensor to be tested; B. Adjust the position and select the testing method for the flexible monitoring sensor under test, including stretching and bending; C. Manually move the upper connecting plate to perform displacement operations or start the servo motor to perform bending and rotation operations; the acquisition device collects the changing signals, and the signal amplifier is used to analyze and record them on the computer.

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