Flexible sensor pressure distribution measuring device

Abstract

The invention discloses a flexible sensor pressure distribution measuring device, and particularly relates to the technical field of sensor measurement, the flexible sensor pressure distribution measuring device comprises a measuring instrument, a plurality of leads and a plurality of strain gages, one side of the measuring instrument is provided with an accurate assembly, and the accurate assembly is used for accurately inserting the leads into a measuring circuit of the measuring instrument; the precise assembly comprises a precise shell fixedly connected to one side of the measuring instrument, a centering rod fixedly connected to the outer portion of the lead in a sleeving mode and a through groove formed in the outer portion of the precise shell and communicated with the inner portion of the precise shell. Through the arrangement of the precise assembly, the leads and the measuring instrument, the resistance applied to the leads in the inserting and pulling-out processes can be different, errors caused when a user inserts the leads into a measuring circuit of the measuring instrument are prevented, each lead can still be stably inserted into the measuring instrument after being frequently pulled out, and the measuring instrument is more convenient to use. Therefore, the device can accurately measure the pressure of the flexible sensor.

Description

Technical Field

[0001] The invention relates to the technical field of sensor measurement, and in particular to a flexible sensor pressure distribution measurement device. Background Art

[0002] Flexible sensors refer to sensors made of flexible materials, which have good flexibility and ductility and can be bent or even folded freely. However, before using the flexible sensor, in order to ensure the uniformity of the pressure of the flexible sensor, a measuring device is generally used to measure the pressure response of different parts of the flexible sensor, thereby discovering the unevenness of the pressure of the flexible sensor during the measurement process, and then adjusting and optimizing these unevennesses, which can effectively improve the measurement accuracy of the sensor and ensure the accuracy and reliability of its output data. At present, when measuring the flexible sensor, the strain distribution on the surface of the flexible sensor may not be uniform when it is under pressure. In order to fully understand the overall strain state of the sensor, Strain gauges need to be pasted at multiple positions to accurately measure the strain conditions in various areas. In actual measurements, the pasting positions of the strain gauges need to be adjusted according to different measurement requirements. When measuring strain at different parts of a complex structure, in order to obtain more comprehensive and accurate strain data, the strain gauge needs to be moved from one position to another. This requires first pulling out the leads of the strain gauge from the measurement circuit, adjusting the position, re-pasting the strain gauge, and then inserting the leads into the measurement circuit. Frequent plugging and unplugging of the leads of the strain gauge by users makes it easy for users to make mistakes when inserting the leads into the measurement circuit, resulting in the incorrect connection method of the leads, which affects the device's accurate measurement of the flexible sensor pressure. Summary of the invention

[0003] The object of the present invention is to provide a flexible sensor pressure distribution measurement device to solve the above-mentioned deficiencies in the technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flexible sensor pressure distribution measuring device, comprising a measuring instrument, a plurality of lead wires and a plurality of strain gauges, a precision component is provided on one side of the measuring instrument, and the precision component is used to accurately insert the lead wires into the measuring circuit of the measuring instrument and maintain stable pressure measurement between the strain gauge and the flexible sensor, the precision component comprises a precision shell fixedly connected to one side of the measuring instrument, a centering rod fixedly sleeved on the outside of the lead wires, and a through groove provided on the outside of the precision shell and communicating with the inside thereof, and the centering rod is plugged in and out of the inside of the precision shell, An arc-shaped arc plate is provided between the precision shell and the through groove, one end of the arc plate is fixedly connected to the second arc block, the outside of the centering rod is fixedly connected to the first arc block, and the slopes of the first arc block and the second arc block match, a resistance block is fixedly connected to one side of the arc plate adjacent to the second arc block, and the resistance block frictionally resists the bottom of the centering rod, a centering component is provided between the precision shell and the arc plate, and the centering component is used to reset the arc plate after movement to ensure that the centering rod is frequently and accurately inserted into the interior of the precision shell, a prompt component is provided in the centering component, and the prompt component is used to connect the first arc block with the second arc block A predetermined component is provided between the precision shell and the centering rod, and the predetermined component is used to keep the precision shell and the centering rod stable, so that the lead and the measuring instrument are kept stable: and the number of the precision components is equal to the lead and the strain gauge, and there is a difference in the slope between each first arc block and each second arc block. The setting of different slopes can change the contact angle and contact area between the first arc block and the second arc block, so that the lead is subjected to different resistance during the insertion and extraction process. At the same time, the lead forms a tighter fit with the precision shell after insertion. When the first When an arc block is inserted along the slope, a certain pre-tightening force will be generated in the precision shell, making the contact between the lead and the precision shell and the measuring instrument more firm and not easy to loosen, ensuring that each lead can maintain a precise connection with the measuring instrument, so that each lead can still maintain a stable connection with the measuring instrument after frequent withdrawal. In addition, the slope between the first arc block and the second arc block is coordinated, which makes insertion and withdrawal smoother, avoiding excessive friction and extrusion between the lead and the edge of the precision shell. At the same time, the existence of the slope can also disperse stress and reduce the tension and pressure on the lead locally.

[0005] Preferably, the side of the precision shell close to the arc plate is also fixedly connected to a positioning shell that communicates with the inside of the through slot, the interior of the positioning shell is rotatably connected to a concentric column, the arc plate is sleeved on the outside of the concentric column, and the concentric column is used to make the arc plate perform lever movement in the positioning shell and the through slot; and parts of the second arc block, arc plate and interference block are all located inside the positioning shell, ensuring that the second arc block, arc plate and interference block can cooperate between the through slot and the positioning shell to avoid mutual interference.

[0006] Preferably, the centering assembly includes a centering plate fixedly connected to the inside of the positioning shell and a limiting column connected between the concentric column and the positioning shell, and the centering plate is sleeved on the outside of the limiting column, and the outside of the limiting column is connected with a centering ear plate, and the side of the centering plate close to the centering column is fixedly connected with two symmetrical centering columns, and the two centering columns are staggered and interfere with the centering ear plate, and one side of the centering ear plate is fixedly connected with a connecting column, and a fixed column is provided on one side of the centering plate, and a first spring is commonly connected between the fixed column and the connecting column, and a guide assembly is provided between the centering plate and the centering column, and the guide assembly is used for guiding the movement of the centering ear plate and the arc plate at the same time to ensure stable contact between the second arc block and the first arc block; and the first spring will generate a reaction force when being pulled, and this reaction force will maintain a certain pressure between the first arc block and the second arc block to ensure that the first arc block and the second arc block will not easily loosen or detach, thereby ensuring the normal operation of the measuring device and the accuracy of the measurement results The precision of the precision shell is high, and the setting of the two centering columns can limit the swing angle of the centering ear plate. When one side of the centering ear plate approaches and contacts the outside of one of the centering columns, the moving distance between the first arc block and the second arc block is maximized, so that the second arc block, the arc plate and the first arc block maintain stable contact, so that the contact block maintains stable contact with the outside of the centering rod, and then the centering rod maintains two-point restriction in the precision shell. At the same time, the elasticity of the first spring itself can give tension to the centering ear plate and one side of the arc plate, which is beneficial to the frequent plugging and unplugging of the lead wire, so that the first spring drives the centering ear plate and the arc plate to reset after moving, ensuring that the first arc block and the second arc block can return to the initial position after each plugging and unplugging, and can ensure that the contact area and contact pressure between the second arc block and the first arc block are always consistent, which can greatly improve the operating efficiency, reduce the waiting time of the operator, and improve the fluency of the entire measurement process, thereby improving the repeatability and reliability of the measurement results of the flexible sensor.

[0007] Preferably, the guide assembly includes a pulling column connected to the side of the centering ear plate close to the connecting column and a side plate fixedly connected to one end of the fixed column, one end of the side plate is fixedly connected to a rectangular ring frame, the top of the rectangular ring frame is fixedly connected to an ear rod, the top of the ear rod is provided with an ear groove for the movement of the pulling column, and the ear groove and the ear rod are combined to form a Y-shaped structure, the centering plate is connected to the side close to the rectangular ring frame with an extension column, and the rectangular ring frame is movable sleeved on the outside of the extension column; to ensure good contact and fit between the first arc block and the second arc block, the first spring will stretch or contract according to the force conditions, so that the second arc block makes corresponding position adjustments to ensure that the first arc block can be smoothly inserted and fits tightly with the second arc block.

[0008] Preferably, the prompt assembly includes a prompt ring fixedly connected to one side of the positioning shell, one end of the limiting column passes through the positioning shell and the prompt ring and is fixedly connected with a connecting ring, and the connecting ring moves in a circle along one end of the prompt ring, one end of the prompt ring is recessed inwardly to form an arc-shaped prompt groove, the inside of the prompt groove is slidably connected with the prompt column, one end of the connecting ring is fixedly connected with a prompt swing frame, and the prompt swing frame is sleeved on the outside of the prompt column; and the prompt swing frame is a U-shaped structure, so that the inside of the prompt swing frame fits with the outside of the prompt column, so that the prompt swing frame moves to form a conflict between its inside and the outside of the prompt column, and then the prompt swing frame pushes the prompt column to move along the inside of the prompt groove, in addition, the rotation of the prompt column can timely understand the plug-in status of the first arc block and the second arc block, when the first arc block and the second arc block begin to be inserted, the slope will make them gradually approach and drive the swing of the arc plate and the limiting column, so that the lead and the measuring instrument are stably plugged in, thereby improving the accuracy and reliability of plugging and unplugging between the strain gauge and the measuring instrument.

[0009] Preferably, the predetermined component includes an earring frame fixedly connected to one end of the precision shell and a predetermined through tube fixedly sleeved on the outside of the centering rod, the outside of the guide ring frame is recessed inward to form a limiting groove, the outside of the earring frame is provided with a ball groove, and the inside of the ball groove is movably connected with a sphere that matches the limiting groove; and the guide ring frame and the limiting groove are matched with the inclination of the sphere, so that the sphere moves back and forth between the guide ring frame and the limiting groove to avoid mutual influence between them. Since the centering rod is pre-inserted into the inside of the earring frame before insertion, it is used to pre-guide the centering rod and the lead in the precision shell, so that the front end of the lead can be accurately inserted, reducing the occurrence of damage to the front end of the lead. In addition, after the lead is stably plugged into the measuring instrument, the position of the lead after fixing is restricted again, so that the position of the strain gauge and the flexible sensor is frequently changed. By restricting the position of the lead, it can be ensured that the path and conditions of signal transmission are basically the same during each measurement, thereby improving the repeatability and reliability of the measurement results.

[0010] Preferably, the outside of the earring frame is fixedly sleeved with a centering ring, the inside of the predetermined through tube moves along the outside of the centering ring, the inside of the predetermined through tube is fixedly connected with a support ring, and the support ring is slidably sleeved on the outside of the earring frame, and the outside of the support ring contacts the top of the sphere.

[0011] Preferably, a second spring is commonly connected between the centering ring and the supporting ring, and the second spring is sleeved on the outside of the earring frame.

[0012] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. Through the setting of precise components, leads and measuring instruments, it is possible to achieve different resistances to the leads during insertion and removal, preventing users from making mistakes when inserting the leads into the measuring circuit of the measuring instrument, facilitating the correct connection of the leads, so that each lead can still maintain a stable connection with the measuring instrument after frequent removal, thereby improving the device's accurate measurement of the flexible sensor pressure.

[0013] 2. Through the setting of the first arc block, the second arc block, the lead, the centering rod and the precision shell, a tighter fit can be achieved between the lead and the precision shell after insertion. When the first arc block is inserted along the slope, a certain pre-tightening force will be generated in the precision shell, making the contact between the lead and the precision shell and the measuring instrument more firm and not easy to loosen, ensuring that each lead can maintain a precise connection with the measuring instrument, so that each lead can still maintain a stable connection with the measuring instrument after frequent pull-outs, further improving the accurate measurement of the flexible sensor pressure.

[0014] 3. Through the arrangement of the centering assembly, the arc plate, the first arc block, the centering rod, the second arc block and the lead wire, it can be achieved that the first spring will generate a reaction force when being pulled. This reaction force will maintain a certain pressure between the first arc block and the second arc block, ensuring that the first arc block and the second arc block will not easily loosen or detach, and the resistance block maintains stable resistance with the outside of the centering rod, and then the centering rod maintains two-point restrictions in the precise shell, ensuring the precise connection between the lead wire and the measuring instrument, thereby ensuring the normal operation of the measuring device and the accuracy of the measurement results.

[0015] 4. Through the setting of the first spring, the second arc block, the first arc block, the arc plate and the centering ear plate, it can be achieved that during the frequent plugging and unplugging of the lead, the first spring drives the centering ear plate and the arc plate to reset after moving, ensuring that the first arc block and the second arc block can return to their initial positions after each plugging and unplugging, and that the contact area and contact pressure between the second arc block and the first arc block are always consistent, which can greatly improve operating efficiency, reduce the waiting time of operators, and improve the fluency of the entire measurement process, thereby improving the repeatability and reliability of the measurement results of the flexible sensor.

[0016] 5. Through the arrangement of the prompt assembly, limiting column, arc plate, lead wire and measuring instrument, the prompt swing frame can push the prompt column to move along the inside of the prompt groove. In addition, the rotation of the prompt column can timely understand the plug-in status of the first arc block and the second arc block. When the first arc block and the second arc block begin to be inserted, the slope will make them gradually approach and drive the swing of the arc plate and the limiting column, so that the lead wire and the measuring instrument are stably plugged in, thereby improving the accuracy and reliability of plugging and unplugging between the strain gauge and the measuring instrument.

[0017] 6. Through the setting of predetermined components, centering rods, leads, precision shells, measuring instruments and precision shells, the position of the leads can be restricted again after being stably plugged into the measuring instrument, so that the positions of the strain gauges and the flexible sensors can be frequently replaced. By restricting the position of the leads, it can be ensured that the path and conditions of signal transmission are basically the same during each measurement, thereby improving the repeatability and reliability of the measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the structure of the lead wire and the measuring instrument assembly of the present invention; Figure 2 It is a structural schematic diagram of the centering rod of the present invention; Figure 3 It is a partial cross-sectional view of the precision shell of the present invention; Figure 4 It is a schematic structural diagram of the first arc block of the present invention; Figure 5 For the present invention Figure 4 A local enlarged view of point A in FIG. Figure 6 It is a structural schematic diagram of the assembly of the centering ear plate and the centering column of the present invention; Figure 7 For the present invention Figure 6 A local enlarged view of point B in FIG. Figure 8 It is a schematic structural diagram of the first arc block of the present invention; Fig. 9 is a schematic structural diagram of the first spring of the present invention; Fig.10 It is a schematic diagram of the structure of the restriction column of the present invention; Fig.11 For the present invention Fig.10 A local enlarged view of point C in FIG. Fig.12 It is an exploded view of the predetermined components of the present invention.

[0020] Description of reference numerals: 1. Measuring instrument; 11. Strain gauge; 12. Lead wire; 2. Precision assembly; 21. Precision shell; 22. Centering rod; 23. First arc block; 24. Second arc block; 25. Through slot; 26. Positioning shell; 27. Concentric column; 28. Arc plate; 29. ​​Resistance block; 3. Centering assembly; 31. Centering plate; 32. Centering column; 33. Centering ear plate; 34. Limiting column; 35. First spring; 36. Ear rod; 37. Ear groove; 38. Pull column; 39. Rectangular ring frame; 301. Side plate; 302. Fixed column; 303. Connecting column; 304. Extension column; 4. Prompt assembly; 41. Prompt column; 42. Prompt slot; 43. Prompt swing frame; 44. Connecting ring; 45. Prompt ring; 5. Predetermined assembly; 51. Predetermined through cylinder; 52. Support ring; 53. Centering ring; 54. Earring frame; 55. Second spring; 56. Ball groove; 57. Ball; 58. Guide ring frame; 59. Limiting groove. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] The present invention provides Figure 1-Figure 7 A flexible sensor pressure distribution measuring device shown includes a measuring instrument 1, a plurality of lead wires 12 and a plurality of strain gauges 11; The specific structures and principles of the measuring instrument 1 and the strain gauge 11 are prior art, so they are not described in detail in this application. Currently, in the measurement of flexible sensors, the process of the measuring instrument 1 generally includes the following steps: 1. Connect the strain gauge 11 to a four-arm bridge (full bridge) or half bridge configuration to improve sensitivity and temperature compensation.

[0023] Second, for complex stress states, multiple strain gauges 11 are arranged in different directions to measure multi-axial strain.

[0024] 3. Use an instrumentation amplifier to amplify the weak bridge output signal (usually in the microvolt level).

[0025] 4. Add a low-pass filter to eliminate high-frequency noise (such as 50Hz power frequency interference).

[0026] 5. Use compensation strain gauges 11 or temperature sensors to correct the temperature drift effect in real time.

[0027] 6. Digitize the analog signal using a high-resolution ADC (e.g., 24-bit).

[0028] 7. Adjust the sampling rate according to the frequency of pressure changes (such as static or dynamic pressure) to ensure signal integrity.

[0029] 8. Apply a known pressure (such as a weight or pressure calibrator), record the output voltage, and establish a pressure-voltage relationship curve (linear or polynomial fit).

[0030] 9. Evaluate the performance stability of the sensor after repeated loading and optimize the material and structural design.

[0031] A precision component 2 is provided on one side of the measuring instrument 1, and the precision component 2 is used to accurately insert the lead 12 into the measuring circuit of the measuring instrument 1 and maintain stable pressure measurement between the strain gauge 11 and the flexible sensor. The precision component 2 includes a precision shell 21 fixedly connected to one side of the measuring instrument 1, a centering rod 22 fixedly sleeved on the outside of the lead 12, and a through groove 25 opened on the outside of the precision shell 21 and communicating with the inside thereof, and the centering rod 22 is plugged into and pulled out of the inside of the precision shell 21, and an arc-shaped arc plate 28 is provided between the precision shell 21 and the through groove 25, one end of the arc plate 28 is fixedly connected to the second arc block 24, the outside of the centering rod 22 is fixedly connected to the first arc block 23, and the slopes of the first arc block 23 and the second arc block 24 are matched, and a resistance block 29 is fixedly connected to one side of the arc plate 28 adjacent to the second arc block 24, and the resistance block 29 frictionally resists the bottom of the centering rod 22 A centering component 3 is provided between the precision shell 21 and the arc plate 28, and the centering component 3 is used to reset the arc plate 28 after moving, ensuring that the centering rod 22 is frequently and accurately inserted into the interior of the precision shell 21, and a prompt component 4 is provided in the centering component 3, and the prompt component 4 is used to prompt the contact between the first arc block 23 and the second arc block 24, and a predetermined component 5 is provided between the precision shell 21 and the centering rod 22, and the predetermined component 5 is used to keep the precision shell 21 and the centering rod 22 stable, so that the lead 12 and the measuring instrument 1 are kept stable: the side of the precision shell 21 close to the arc plate 28 is also fixedly connected with a positioning shell 26 that is connected to the interior of the through slot 25, and the interior of the positioning shell 26 is rotatably connected with a concentric column 27, the arc plate 28 is sleeved on the outside of the concentric column 27, and the concentric column 27 is used to make the arc plate 28 do a lever movement in the positioning shell 26 and the through slot 25; When the lead 12 needs to be plugged into the measuring instrument 1, the lead 12 is inserted into the inside of the lead 12, and then the centering rod 22 moves along the inside of the precision shell 21. At this time, the movement of the centering rod 22 drives the first arc block 23 to move at the same time, and the bottom of the first arc block 23 and the top slope of the second arc block 24 match, so that the bottom of the first arc block 23 and the second arc block 24 collide and generate friction, and the first arc block 23 moves to push the second arc block 24, so that the second arc block 24 moves downward and drives the arc plate 28 to swing in the through groove 25, and the second arc block 23 moves downward and drives the arc plate 28 to swing in the through groove 25. The block 24 moves downward, driving the arc plate 28 to move downward at the same time, and then the arc plate 28 and the concentric column 27 rotate inside the positioning shell 26, so that the arc plate 28 swings and drives the resistance block 29 to slowly approach the bottom of the centering rod 22 and form a resistance, so that the contact between the lead 12 and the precision shell 21 and the measuring instrument 1 is more firm and not easy to loosen, ensuring that each lead 12 can maintain a precise connection with the measuring instrument 1, so that each lead 12 can still maintain a stable connection with the measuring instrument 1 after frequent unplugging, thereby improving the repeatability and reliability of the measurement results of the flexible sensor.

[0032] refer to Figure 2 , Figure 4 , Figure 6 , Fig. 9 and Fig.10 As shown, the centering assembly 3 includes a centering plate 31 fixedly connected to the inside of the positioning shell 26 and a limiting column 34 connected between the concentric column 27 and the positioning shell 26, and the centering plate 31 is sleeved on the outside of the limiting column 34, and the outside of the limiting column 34 is connected with a centering ear plate 33, and the side of the centering plate 31 close to the centering column 32 is fixedly connected with two symmetrical centering columns 32, and the two centering columns 32 are staggered and abut against the centering ear plates 33, and one side of the centering ear plates 33 is fixedly connected with a connecting column 303, and a fixed column 302 is provided on one side of the centering plate 31, and a first spring 35 is commonly connected between the fixed column 302 and the connecting column 303, and a guide assembly is provided between the centering plate 31 and the centering column 32, and the guide assembly is provided between the centering plate 31 and the centering column 32. The guide assembly is used to guide the movement of the centering ear plate 33 and the arc plate 28 at the same time, so as to ensure the stable contact between the second arc block 24 and the first arc block 23; the guide assembly includes a pull column 38 connected to the side of the centering ear plate 33 close to the connecting column 303 and a side plate 301 fixedly connected to one end of the fixed column 302, one end of the side plate 301 is fixedly connected to a rectangular ring frame 39, the top of the rectangular ring frame 39 is fixedly connected to an ear rod 36, the top of the ear rod 36 is provided with an ear groove 37 for the pull column 38 to move, and the ear groove 37 and the ear rod 36 are combined to form a Y-shaped structure, the side of the centering plate 31 close to the rectangular ring frame 39 is connected to an extension column 304, and the rectangular ring frame 39 is movably sleeved on the outside of the extension column 304; When the centering rod 22 is inserted into the precision shell 21 and the first arc block 23 contacts the second arc block 24, the arc plate 28 rotates to drive the concentric column 27 to rotate, and then the concentric column 27 rotates to drive the limiting column 34 to rotate simultaneously in the positioning shell 26 and inside the limiting column 34. As the limiting column 34 rotates, the centering ear plate 33 is also rotated, and then the centering ear plate 33 swings along one side of the centering plate 31. At this time, one side of the centering ear plate 33 approaches the outside of one of the centering columns 32, and the other side of the centering ear plate 33 moves away from the outside of the other centering column 32. The centering ear plate 33 moves upward to drive the pulling column 38 to move at the same time, and then the pulling column 38 moves upward along the inside of the ear groove 37 and forms a conflict with the ear groove 37, which is used to drive the ear groove 37 along one side of the centering ear plate 33 Swing left and right, at this time the ear groove 37 swings to drive the ear rod 36 and the rectangular ring frame 39 to tilt on the centering plate 31 and the extension column 304, so that the two ends of the first spring 35 move in the moving guide of the connecting column 303 and the side plate 301, so that the centering ear plate 33 swings to drive the connecting column 303 to move upward, and then the connecting column 303 moves upward to pull the first spring 35, so that the first spring 35 is stretched between the connecting column 303 and the fixed column 302, and the first spring 35 will generate a reaction force when being pulled, and this reaction force will keep a certain pressure between the first arc block 23 and the second arc block 24, ensuring that the first arc block 23 and the second arc block 24 will not easily loosen or detach, thereby ensuring the normal operation of the measuring device and the accuracy of the measurement results.

[0033] refer to Figure 4 , Fig.10 and Fig.11 As shown, the prompt assembly 4 includes a prompt ring 45 fixedly connected to one side of the positioning shell 26, one end of the limiting column 34 penetrates the positioning shell 26 and the prompt ring 45 and is fixedly connected to a connecting ring 44, and the connecting ring 44 moves in a circle along one end of the prompt ring 45, one end of the prompt ring 45 is recessed inward to form an arc-shaped prompt groove 42, the inside of the prompt groove 42 is slidably connected to the prompt column 41, one end of the connecting ring 44 is fixedly connected to a prompt swing frame 43, and the prompt swing frame 43 is sleeved on the outside of the prompt column 41; When the first arc block 23 contacts the second arc block 24 and drives the arc plate 28 and the limiting column 34 to rotate, the limiting column 34 is rotated to rotate it along the inside of the positioning shell 26 and the prompt ring 45, and then the limiting column 34 rotates to drive the connecting ring 44 to rotate at the same time. At this time, the connecting ring 44 rotates to drive the prompt swing frame 43 to move in a circle along one end of the prompt ring 45, and the prompt swing frame 43 moves to push the prompt column 41 to move synchronously along the prompt groove 42, so that the position of the prompt column 41 in the prompt groove 42 is adjusted, so that the rotation of the prompt column 41 can timely understand the plug-in status of the first arc block 23 and the second arc block 24, and then the user can judge the position of the lead 12 and the measuring instrument 1 during plug-in based on the movement of the prompt column 41, to ensure the precise plug-in between the measuring instrument 1 and the lead 12, thereby improving the accuracy and reliability of the plug-in and unplugging between the strain gauge 11 and the measuring instrument 1.

[0034] refer to Figure 4 , Figure 5 and Fig.12 As shown, the predetermined component 5 includes an earring frame 54 fixedly connected to one end of the precision shell 21 and a predetermined through tube 51 fixedly sleeved on the outside of the centering rod 22, the outside of the guide ring frame 58 is recessed inward to form a limiting groove 59, the outside of the earring frame 54 is provided with a ball groove 56, and the inside of the ball groove 56 is movably connected with a ball 57 that matches the limiting groove 59; the outside of the earring frame 54 is fixedly sleeved with a centering ring 53, the inside of the predetermined through tube 51 moves along the outside of the centering ring 53, the inside of the predetermined through tube 51 is fixedly connected with a support ring 52, and the support ring 52 is slidably sleeved on the outside of the earring frame 54, and the outside of the support ring 52 contacts the top of the ball 57; a second spring 55 is commonly connected between the centering ring 53 and the support ring 52, and the second spring 55 is sleeved on the outside of the earring frame 54; When the centering rod 22 is inserted into the interior of the earring frame 54, the user is required to push the predetermined through tube 51 in advance, and then the predetermined through tube 51 moves along the outside of the earring frame 54 and the centering ring 53. At this time, the movement of the predetermined through tube 51 drives the support ring 52 to move along the outside of the earring frame 54 at the same time. As the support ring 52 moves, its interior loses contact with the outside of the ball 57, which is used to make the ball 57 lose contact and lock in the ball groove 56. The movement of the support ring 52 pushes the second spring 55 to move in the direction of the force, and then the second spring 55 is squeezed between the support ring 52 and the centering ring 53, and then the guide ring frame 58 slowly approaches the outside of the ball 57. At this time, the guide ring frame 58 conflicts with the ball 57 and pushes the ball 57 along the ball groove 56. The inner part moves upward, and the top of the guide ring frame 58 of the centering rod 22 slides over the bottom of the sphere 57 under continuous movement, and is staggered between the guide ring frame 58 and the sphere 57 through the movement of the guide ring frame 58, and the sphere 57 loses the interference with the guide ring frame 58, so that the sphere 57 moves downward along the ball groove 56 and moves to the inside of the limiting groove 59, and then the moving distance of the centering rod 22 in the precision shell 21 and the earring frame 54 is limited. After the lead 12 is stably plugged into the measuring instrument 1, the position of the lead 12 after being fixed is restricted again, so that the position of the strain gauge 11 and the flexible sensor is frequently changed. By limiting the position of the lead 12, it can be ensured that the path and conditions of signal transmission are basically the same during each measurement, thereby improving the repeatability and reliability of the measurement results.

[0035] Through the above technical solution: When in use; The first step is to fully understand the overall strain state of the flexible sensor, so that several leads 12 and several strain gauges 11 can accurately measure the strain conditions of various areas, which is beneficial to the flexible sensor when it is under pressure. The strain distribution on its surface is more uniform, and the flexible sensor needs to move the strain gauge 11 from one position to another during the measurement process. This requires that the leads 12 of the strain gauge 11 be frequently plugged in and out of the measuring circuit of the measuring instrument 1. When one of the leads 12 needs to be reinserted into the measuring circuit of the measuring instrument 1, the user inserts the centering rod 22 into the inside of the earring frame 54 and the precision shell 21, and the user pre-pushes the predetermined through cylinder 51, and then the predetermined through cylinder 51 moves along the outside of the earring frame 54 and the centering ring 53. When the predetermined through cylinder 51 moves, it drives the support ring 52 to move simultaneously along the outside of the earring frame 54. As the support ring 52 moves, its inside loses the contact with the outside of the sphere 57, which is used to make the sphere 57 lose the contact and lock in the ball groove 56, and the movement of the support ring 52 pushes the second spring 55 to move in the direction of the force, and then the second spring 55 is squeezed between the support ring 52 and the centering ring 53, and then the guide ring frame 58 slowly approaches the outside of the sphere 57. At this time, the guide ring frame 58 contacts with the sphere 57 and pushes the sphere 57 to move upward along the inside of the ball groove 56, and the centering rod 22 guides the top of the ring frame 58 to slide over the bottom of the sphere 57 under continuous movement, and is staggered with the sphere 57 through the movement of the guide ring frame 58.

[0036] In the second step, the bottom of the first arc block 23 matches the top slope of the second arc block 24. At this time, the first arc block 23 moves to the right to rub against the second arc block 24 and push the second arc block 24 to generate a downward thrust. The second arc block 24 moves downward and drives the arc plate 28 and the concentric column 27 to rotate in the positioning shell 26, and the rotation of the arc plate 28 drives the resistance block 29 to slowly approach the bottom of the centering rod 22, so that the rotation of the arc plate 28 drives the concentric column 27 and the limiting column 34 to rotate at the same time, and as the limiting column 34 rotates, the centering ear plate 33 is driven to rotate at the same time, and then the centering ear plate 33 moves along one side of the centering plate 31 Swing, at this time, one side of the centering ear plate 33 approaches the outside of one of the centering columns 32, and the other side of the centering ear plate 33 moves away from the outside of the other centering column 32, and the centering ear plate 33 moves upward, driving the pulling column 38 to move at the same time, and then the pulling column 38 moves upward along the inside of the ear groove 37 and forms a conflict with the ear groove 37, which is used to drive the ear groove 37 to swing left and right along one side of the centering ear plate 33. At this time, the swing of the ear groove 37 drives the ear rod 36 and the rectangular ring frame 39 to tilt on the centering plate 31 and the extension column 304, so that the two ends of the first spring 35 move in the moving guide of the connecting column 303 and the side plate 301.

[0037] In the third step, the limiting column 34 then rotates to drive the connecting ring 44 to rotate at the same time. At this time, the rotation of the connecting ring 44 drives the prompt swing frame 43 to move in a circle along one end of the prompt ring 45, and the prompt swing frame 43 moves to push the prompt column 41 to move synchronously along the prompt groove 42, so that the position of the prompt column 41 in the prompt groove 42 is adjusted, so that the rotation of the prompt column 41 can timely understand the plug-in status of the first arc block 23 and the second arc block 24, and then the user can judge the position of the lead 12 and the measuring instrument 1 during plug-in based on the movement of the position of the prompt column 41, to ensure accurate plug-in between the measuring instrument 1 and the lead 12.

[0038] The above only describes certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, a person skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flexible sensor pressure distribution measuring device, comprising a measuring instrument (1), a plurality of lead wires (12) and a plurality of strain gauges (11), characterized in that: A precision component (2) is provided on one side of the measuring instrument (1), and the precision component (2) is used to precisely insert a lead wire (12) into a measuring circuit of the measuring instrument (1) and maintain stable pressure measurement between the strain gauge (11) and the flexible sensor. The precision component (2) comprises a precision shell (21) fixedly connected to one side of the measuring instrument (1), a centering rod (22) fixedly sleeved on the outside of the lead wire (12), and a through groove (25) provided on the outside of the precision shell (21) and communicating with the inside of the precision shell (21), and the centering rod (22) is inserted into and removed from the inside of the precision shell (21), an arc-shaped arc plate (28) is provided between the precision shell (21) and the through groove (25), one end of the arc plate (28) is fixedly connected to a second arc block (24), the outside of the centering rod (22) is fixedly connected to a first arc block (23), and between the first arc block (23) and the second arc block (24) The arc plate (28) is fixedly connected to a side adjacent to the second arc block (24) with a resistance block (29), and the resistance block (29) is frictionally in contact with the bottom of the centering rod (22). A centering component (3) is provided between the precision shell (21) and the arc plate (28), and the centering component (3) is used to reset the arc plate (28) after movement, so as to ensure that the centering rod (22) is frequently and accurately inserted into the interior of the precision shell (21). A prompt component (4) is provided in the centering component (3), and the prompt component (4) is used to prompt the contact status between the first arc block (23) and the second arc block (24). A predetermined component (5) is provided between the precision shell (21) and the centering rod (22), and the predetermined component (5) is used to keep the precision shell (21) and the centering rod (22) stable, so that the lead wire (12) and the measuring instrument (1) are kept stable.

2. A flexible sensor pressure distribution measurement device according to claim 1, characterized in that: A positioning shell (26) communicating with the interior of the through slot (25) is fixedly connected to one side of the precision shell (21) close to the arc plate (28); a concentric column (27) is rotatably connected to the interior of the positioning shell (26); the arc plate (28) is sleeved on the outside of the concentric column (27); and the concentric column (27) is used to make the arc plate (28) perform a lever movement in the positioning shell (26) and the through slot (25).

3. A flexible sensor pressure distribution measurement device according to claim 2, characterized in that: The centering assembly (3) comprises a centering plate (31) fixedly connected to the interior of the positioning shell (26) and a limiting column (34) connected between the concentric column (27) and the positioning shell (26), and the centering plate (31) is sleeved on the exterior of the limiting column (34), and the exterior of the limiting column (34) is connected to a centering lug plate (33), and two symmetrical centering columns (32) are fixedly connected to one side of the centering plate (31) close to the centering column (32), and the two centering columns (32) are staggered with the centering lug plates (33). A connecting column (303) is fixedly connected to one side of the centering ear plate (33), a fixed column (302) is provided on one side of the centering plate (31), a first spring (35) is commonly connected between the fixed column (302) and the connecting column (303), a guiding assembly is provided between the centering plate (31) and the centering column (32), and the guiding assembly is used to guide the centering ear plate (33) and the arc plate (28) to move simultaneously, thereby ensuring stable contact between the second arc block (24) and the first arc block (23).

4. A flexible sensor pressure distribution measurement device according to claim 3, characterized in that: The guide assembly comprises a pulling column (38) connected to a side of the centering ear plate (33) close to the connecting column (303) and a side plate (301) fixedly connected to one end of the fixed column (302); a rectangular ring frame (39) is fixedly connected to one end of the side plate (301); an ear rod (36) is fixedly connected to the top of the rectangular ring frame (39); an ear groove (37) for movement of the pulling column (38) is formed at the top of the ear rod (36); the ear groove (37) and the ear rod (36) are combined to form a Y-shaped structure; an extension column (304) is connected to a side of the centering plate (31) close to the rectangular ring frame (39); and the rectangular ring frame (39) is movably sleeved on the outside of the extension column (304).

5. A flexible sensor pressure distribution measurement device according to claim 4, characterized in that: The prompt assembly (4) comprises a prompt ring (45) fixedly connected to one side of the positioning shell (26); one end of the limiting column (34) penetrates the positioning shell (26) and the prompt ring (45) and is fixedly connected to a connecting ring (44); the connecting ring (44) moves in a circle along one end of the prompt ring (45); one end of the prompt ring (45) is recessed inward to form an arc-shaped prompt groove (42); the inside of the prompt groove (42) is slidably connected to the prompt column (41); one end of the connecting ring (44) is fixedly connected to a prompt swing frame (43); and the prompt swing frame (43) is sleeved on the outside of the prompt column (41).

6. The flexible sensor pressure distribution measurement device according to claim 1, characterized in that: The predetermined component (5) comprises an earring frame (54) fixedly connected to one end of the precision shell (21) and a predetermined through tube (51) fixedly sleeved on the outside of the centering rod (22); the outside of the guide ring frame (58) is inwardly recessed to form a limiting groove (59); the outside of the earring frame (54) is provided with a ball groove (56); the inside of the ball groove (56) is movably connected to a ball (57) that matches the limiting groove (59).

7. A flexible sensor pressure distribution measurement device according to claim 6, characterized in that: The outside of the earring frame (54) is fixedly sleeved with a centering ring (53), the inside of the predetermined through tube (51) moves along the outside of the centering ring (53), the inside of the predetermined through tube (51) is fixedly connected with a support ring (52), and the support ring (52) is slidably sleeved on the outside of the earring frame (54), and the outside of the support ring (52) contacts the top of the sphere (57).

8. The flexible sensor pressure distribution measurement device according to claim 7, characterized in that: A second spring (55) is commonly connected between the centering ring (53) and the supporting ring (52), and the second spring (55) is sleeved on the outside of the earring frame (54).

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