Static pressure test bench for piezoelectric film sensor

Abstract

The utility model relates to the field of film sensors, and discloses a static pressure test bench for a piezoelectric film sensor. According to the device, the sliding base is arranged in the outer surface of the lead screw in a sleeving mode, the lead screw and the servo motor are fixedly connected through the rotating shaft, the servo motor serves as a power source for driving the lead screw to rotate, the lead screw rotates through power generated by the servo motor, and the output direction of the power of the lead screw is controlled through the servo motor; the screw rod can rotate forwards and backwards, so that the screw rod can drive the sliding seat on the outer surface of the screw rod to move forwards or backwards, a tray on the upper surface of the sliding seat can be automatically brought in and moved out of a test area, the test efficiency is improved, and clamping damage of a tested assembly caused by manual misoperation is reduced; the device is provided with a part for automatically feeding or moving the piezoelectric film sensor to be tested into or out of the test area, so that manual operation and placement are not needed when the test is needed, the piezoelectric film sensor can be quickly moved out after the test is completed, and the overall test efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of thin film sensors, and particularly relates to a piezoelectric thin film sensor static pressure test platform. BACKGROUND

[0002] A thin film sensor is a sensing device manufactured based on thin film technology. The thin film sensor is used for detecting common physical quantities such as pressure, strain and temperature. A functional film layer can produce specific interaction with a measured physical quantity or chemical quantity, and further cause changes in measurable signals such as electricity, light and sound. The piezoelectric thin film sensor static pressure test platform is a set of experimental devices specially used for evaluating performance of a piezoelectric thin film sensor under the action of static pressure.

[0003] A piezoelectric thin film sensor static pressure test platform is disclosed in a patent with the announcement number CN202661226U, which comprises a table body. A plurality of test card seats are arranged on a table top of the table body. Each row of the test card seats has front and rear clamping plates. Through holes are formed on left and right sides of the clamping plates. Fixing rods are installed in the through holes. The test card seats are installed in a row between the two fixing rods. The test card seat is a sealed hollow ring. An air inlet is formed at a lower end of the test card seat. The air inlet is connected to a booster pump installed at a lower end of the table body through a pipeline. An air outlet is formed on an inner wall of the test card seat. The air outlet of the inner wall of the test card seat faces a stress receiving part of the piezoelectric thin film sensor. The piezoelectric thin film sensor static pressure test platform can simultaneously perform static pressure test on a large number of sensors, is convenient to operate, and greatly improves production efficiency.

[0004] However, the device does not have a component for automatically sending or moving the piezoelectric thin film sensor to be tested into or out of the test area. When the test needs to be performed, the piezoelectric thin film sensor can only be placed by manual operation. After the test is completed, the piezoelectric thin film sensor cannot be quickly moved out, which leads to low overall test efficiency. INVENTION CONTENTS

[0005] The application aims to solve the problem that the device does not have a component for automatically sending or moving the piezoelectric thin film sensor to be tested into or out of the test area. When the test needs to be performed, the piezoelectric thin film sensor can only be placed by manual operation. After the test is completed, the piezoelectric thin film sensor cannot be quickly moved out, which leads to low overall test efficiency. The application provides a piezoelectric thin film sensor static pressure test platform.

[0006] The technical scheme adopted by the application is as follows: a workbench is provided, characterized in that a plurality of sliding grooves are fixedly installed on an upper surface of the workbench. Sliding blocks are attached and installed in the sliding grooves. A tray is fixedly installed on a lower surface of the sliding blocks. A sliding seat is fixedly installed at a rear side of the tray. A screw rod is screwedly installed in the sliding seat. A servo motor is fixedly installed on a front side outer surface of the screw rod.

[0007] By adopting the technical scheme, the upper surface of the workbench is fixedly installed with a plurality of sliding grooves, the inner part of the sliding groove is fixedly installed with a sliding block, the lower surface of the sliding block is fixedly installed with a tray, the rear side of the tray is fixedly installed with a sliding seat, the inner part of the sliding seat is screw-installed with a lead screw, the front side outer surface of the lead screw is fixedly installed with a servo motor, the workbench is used as the installation basis of the table top component, is used for providing conditions for connecting the test assembly, the placement assembly and other components inside the device, the sliding groove is used for limiting the movement range of the placement component, the sliding block drives the tray on the upper surface thereof to move within the range limited by the sliding groove, so as to prevent the placement assembly from falling out of the upper surface of the workbench, the tray is used as a bearing for providing a position for the component for preventing displacement of the piezoelectric film sensor, and the tray is used as the main part of the placement assembly, is used for driving the piezoelectric film sensor on the upper surface thereof to enter and exit the test area, the combination of the sliding seat, the lead screw and the servo motor is adopted, the sliding seat is sleeved on the outer surface of the lead screw, the lead screw and the servo motor are fixedly connected through the rotating shaft, the servo motor is used as the power source for driving the lead screw to rotate, the lead screw is rotated through the power generated by the servo motor, the output direction of the power of the servo motor is controlled, the lead screw is reversely rotated or forward rotated, the sliding seat on the outer surface of the lead screw can be driven to move forward or backward, the tray on the upper surface of the sliding seat can be automatically brought into or moved out of the test area, the test efficiency is improved, manual misoperation is reduced, the tested assembly is prevented from being clamped, the piezoelectric film sensor to be tested is automatically sent into or moved out of the test area, manual operation is not needed when testing is needed, the piezoelectric film sensor can be quickly moved out after testing is completed, and the overall test efficiency is improved.

[0008] In a preferred embodiment, the upper surface of the tray is fixedly installed with a positioning seat, and the front side outer surface of the positioning seat is slidingly installed with a limiting block.

[0009] By adopting the technical scheme, the upper surface of the tray is fixedly installed with a positioning seat, the front side outer surface of the positioning seat is slidingly installed with a limiting block, the inner part of the positioning seat is divided into three parts, three piezoelectric film sensors can be simultaneously subjected to static pressure testing, a groove is formed in the inner part of the positioning seat to prevent deviation during testing, a long groove is formed in the front side outer surface of the positioning seat to provide a range for sliding of the limiting block, the limiting block can slide within the range limited by the long groove of the positioning seat, the joint part of the limiting block is prevented from sliding out of the positioning seat, and a cavity region is formed in the inner part of the limiting block to allow the cable of the sensor to pass through, the cable and the sensor body can be taken out by lifting the limiting block upward, and the limiting block plays an auxiliary fixing role.

[0010] In a preferred embodiment, the upper surface of the workbench is fixedly installed with a plurality of sliding rails, and the inner part of the sliding rail is slidingly installed with an electric sliding block.

[0011] The upper surface of the workbench is fixedly installed with a plurality of sliding rails, the inside of the sliding rails is slidably installed with an electric sliding block, the combination of the sliding rail and the electric sliding block is adopted, the sliding rail is used for limiting a certain range of movement of the electric sliding block, and the electric sliding block can drive the test assembly inside the electric sliding block to change the height, and the stroke of the test assembly in the downward pressing can be controlled.

[0012] In a preferred embodiment, a plurality of hydraulic cylinders are fixedly installed inside the electric sliding block, and a pressing block is fixedly installed on the lower surface of the hydraulic cylinder.

[0013] By adopting the technical scheme, the plurality of hydraulic cylinders are fixedly installed inside the electric sliding block, and the pressing block is fixedly installed on the lower surface of the hydraulic cylinder, the hydraulic cylinder provides a stable and reliable pressure source for testing the performance of the piezoelectric film sensor under different static pressure conditions, and the pressing block cooperates with the hydraulic cylinder to uniformly disperse the concentrated pressure output by the hydraulic cylinder to the surface of the sensor, so that the stress of each part of the sensor is uniform, and a real and uniform pressure environment is simulated.

[0014] In a preferred embodiment, a power distribution cabinet is fixedly installed on the lower surface of the workbench, and a maintenance door is hingedly installed on the front outer surface of the power distribution cabinet.

[0015] By adopting the technical scheme, the power distribution cabinet is fixedly installed on the lower surface of the workbench, and the maintenance door is hingedly installed on the front outer surface of the power distribution cabinet, the power distribution cabinet is electrically connected with each electrical component, the power distribution cabinet contains a power supply and a circuit breaker, the power supply can distribute the required electricity of the internal equipment of the device, and the circuit breaker is arranged in the circuit output by the power supply and is used for ensuring the safety of the electricity in the device, and the internal equipment of the power distribution cabinet can be maintained by opening the maintenance door.

[0016] In a preferred embodiment, ventilation openings are fixedly installed on the left and right outer surfaces of the power distribution cabinet, and protective nets are fixedly installed on the outer surfaces of the ventilation openings.

[0017] By adopting the technical scheme, the ventilation openings are fixedly installed on the left and right outer surfaces of the power distribution cabinet, and the protective nets are fixedly installed on the outer surfaces of the ventilation openings, the ventilation openings promote the air exchange between the inside and outside of the power distribution cabinet, timely discharge the heat generated by the equipment operation, introduce the cold air from the outside, and maintain the suitable working temperature of the equipment, and the protective nets cover the outer surfaces of the ventilation openings, prevent foreign matters such as dust particles, small insects, and debris from entering the inside of the power distribution cabinet through the ventilation openings, and avoid the physical damage of the internal components.

[0018] In a preferred embodiment, a control console is fixedly installed on the right side of the upper surface of the workbench.

[0019] By adopting the technical scheme, the upper surface right side of the workbench is fixedly installed with the console, the inside of the console contains a microprocessor, a touch panel, buttons and other devices, and is electrically connected with electrical components inside the device, the console integrates various operation functions of the test table, and centralized control of the whole test process is realized.

[0020] In a preferred embodiment, a storage box is fixedly installed on the left side of the upper surface of the workbench, and a storage box cabinet door is hingedly installed on the outer surface of the storage box.

[0021] By adopting the technical scheme, the upper surface left side of the workbench is fixedly installed with the storage box, the outer surface of the storage box is hingedly installed with the storage box cabinet door, the storage box is used for temporarily storing the sensor to be tested, the sensor can be tested at any time, when the storage box cabinet door is closed, the components inside the storage box are protected from dust and moisture in the external environment, rusting of tools and damage of accessories caused by environmental factors are avoided, and the sensor components can be put in or taken out by opening the storage box cabinet door.

[0022] In summary, due to the adoption of the above technical scheme, the application has the following beneficial effects:

[0023] In the application, the combination of the sliding seat, the lead screw and the servo motor is adopted, the sliding seat is sleeved on the outer surface of the lead screw, the lead screw is fixedly connected with the servo motor through the rotating shaft, the servo motor serves as a power source for driving the lead screw to rotate, the lead screw rotates by the power generated by the servo motor, the output direction of the power of the servo motor is controlled, the forward rotation and the reverse rotation of the lead screw are realized, the sliding seat on the outer surface of the lead screw can be driven to move forward or backward, the tray on the upper surface of the sliding seat can be automatically brought into or moved out of the test area, the test efficiency is improved, manual misoperation causing the tested components to be clamped is reduced, the components for automatically sending the piezoelectric film sensor to be tested into or moving out of the test area are installed in the device, manual operation is not needed when the test is needed, the piezoelectric film sensor can be quickly moved out after the test is completed, and the overall test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a front side perspective structure schematic view in the application;

[0025] Figure 2 It is a rear side perspective structure schematic view in the application;

[0026] Figure 3 It is a placing assembly structure schematic view in the application;

[0027] Figure 4 It is a static pressure assembly structure schematic view in the application;

[0028] Figure 5The device component structure schematic diagram in the present application.

[0029] Marked in the figure: 1, workbench; 2, sliding groove; 3, sliding block; 4, tray; 5, sliding seat; 6, screw rod; 7, servo motor; 8, positioning seat; 9, limiting block; 10, sliding rail; 11, electric sliding block; 12, hydraulic cylinder; 13, pressing block; 14, power distribution cabinet; 15, access door; 16, ventilation opening; 17, protective net; 18, control console; 19, storage box; 20, storage box cabinet door. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0031] Embodiment:

[0032] With reference to Figures 1-3 , including workbench 1, workbench 1 as the installation basis of the table top component, used to provide conditions for connecting the test components, placing components and other components inside the device, sliding groove 2 is used to limit the moving range of the placing components, sliding block 3 drives the tray 4 on the upper surface of itself to move within the range limited by the sliding groove 2, preventing the placing components from falling off the upper surface of the workbench 1, the tray 4 is used to provide the position for the components that prevent the displacement of the piezoelectric film sensor, and the tray 4 is the main part of the placing components, used to drive the piezoelectric film sensor on the upper surface of itself to enter and exit the test area, adopting the combination of sliding seat 5, screw rod 6 and servo motor 7, sliding seat 5 is sleeved on the outer surface of screw rod 6, screw rod 6 is fixedly connected with servo motor 7 through the rotating shaft, servo motor 7 is the power source for driving screw rod 6 to rotate, screw rod 6 rotates through the power generated by servo motor 7, and the output direction of the power of servo motor 7 is controlled, realizing the forward rotation and reverse rotation of screw rod 6, so that it can drive sliding seat 5 on the outer surface of screw rod 6 to move forward or backward, automatically bringing the tray 4 on the upper surface of sliding seat 5 into or out of the test area, speeding up the test efficiency, and reducing the risk of being injured by the tested components due to manual misoperation, through installing the components for automatically sending the piezoelectric film sensor to be tested into or out of the test area in the device, when testing is needed, manual operation is not needed, and after the test is completed, the piezoelectric film sensor can be quickly moved out, improving the overall test efficiency.

[0033] With reference to Figure 3The inner part of the positioning seat 8 is divided into three parts, which can simultaneously test three piezoelectric film sensors under static pressure. The inner part is provided with a groove to prevent deviation during the test. The front outer surface of the positioning seat 8 is provided with a long groove to provide a certain range for the sliding of the limiting block 9. The limiting block 9 can slide in the range defined by the long groove of the positioning seat 8, and the joint part of the sensor is limited to slide out of the positioning seat 8. The limiting block 9 is internally provided with a cavity area, which can run the cable of the sensor. The cable and the sensor body can be taken out by lifting the limiting block 9 upward, which plays an auxiliary fixing role.

[0034] Referring to Figure 2 With Figure 3 , the combination of the sliding rail 10 and the electric sliding block 11 is adopted. The sliding rail 10 is used to limit the range of movement of the electric sliding block 11. The electric sliding block 11 can drive the test assembly inside to change the height, and the stroke of the test assembly can be controlled.

[0035] Referring to Figure 2 With Figure 3 , the hydraulic cylinder 12 provides a stable and reliable pressure source for testing the performance of the piezoelectric film sensor under different static pressure conditions. The pressing block 13 cooperates with the hydraulic cylinder 12 to uniformly disperse the concentrated pressure output by the hydraulic cylinder 12 to the surface of the sensor, so as to ensure that the sensor is uniformly stressed and simulates a real uniform pressure environment.

[0036] Referring to Figure 1 , Figure 2 With Figure 5 , the power distribution cabinet 14 is electrically connected with each electrical component. The power distribution cabinet 14 contains a power supply and a circuit breaker. The power supply can distribute the required power to the internal equipment of the device. The circuit breaker is arranged in the circuit output by the power supply to ensure the safety of the power in the device. The equipment inside the power distribution cabinet 14 can be repaired by opening the access door 15.

[0037] Referring to Figure 5 , the ventilation opening 16 promotes the air exchange between the inside and outside of the power distribution cabinet 14, timely discharges the heat generated by the equipment operation, introduces the external cold air, and maintains the suitable working temperature of the equipment. The protective net 17 covers the outer surface of the ventilation opening 16 to prevent foreign matters such as dust particles, small insects, and debris from entering the inside of the power distribution cabinet 14 through the ventilation opening 16, and to avoid physical damage to the internal components.

[0038] Referring to Figure 1 , the inside of the control console 18 contains a microprocessor, a touch panel, a button, and other equipment, and is electrically connected with the electrical components inside the device. The control console 18 integrates various operation functions of the test bench, and realizes centralized control of the whole test process.

[0039] Referring toFigure 1 The storage box 19 is used for temporarily storing the sensor to be tested, facilitating the testing at any time, and when the storage box cabinet door 20 is closed, the components inside the storage box 19 are protected from the invasion of external dust and water vapor, avoiding the rusting of tools and the damage of accessories due to environmental factors. The sensor components can be put in or taken out by opening the storage box cabinet door 20.

[0040] The implementation principle of the piezoelectric film sensor static pressure test table embodiment of the application is as follows: the workbench 1 is used as the installation basis of the table top component, provides conditions for connecting the test assembly, the placement assembly and other components inside the device, the sliding groove 2 is used to limit the movement range of the placement component, the sliding block 3 drives the tray 4 on the upper surface of the sliding block 3 to move within the range limited by the sliding groove 2, preventing the placement assembly from falling off the upper surface of the workbench 1, the tray 4 is used as a bearing to provide a position for the component for preventing displacement of the piezoelectric film sensor, and the tray 4 is the main part of the placement assembly, used to drive the piezoelectric film sensor on the upper surface of the tray 4 to enter and exit the test area, the combination of the sliding seat 5, the lead screw 6 and the servo motor 7 is adopted, the sliding seat 5 is sleeved on the outer surface of the lead screw 6, the lead screw 6 is fixedly connected with the servo motor 7 through the rotating shaft, the servo motor 7 is the power source for driving the lead screw 6 to rotate, the lead screw 6 rotates by the power generated by the servo motor 7, and the output direction of the power of the servo motor 7 is controlled, realizing the forward rotation and reverse rotation of the lead screw 6, so that the sliding seat 5 on the outer surface of the lead screw 6 can advance or retreat, the tray 4 on the upper surface of the sliding seat 5 can be automatically brought into or moved out of the test area, the test efficiency is improved, and the tested assembly is not damaged due to manual misoperation. By installing the component for automatically sending the piezoelectric film sensor to be tested into or out of the test area, manual placement is not required when testing is needed, and the tested assembly can be quickly moved out after testing, improving the overall test efficiency.

[0041] The above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A piezoelectric thin film sensor static pressure test bench comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly installed with a plurality of sliding grooves (2), the inner part of the sliding groove (2) is attached with a sliding block (3), the lower surface of the sliding block (3) is fixedly installed with a tray (4), the rear side of the tray (4) is fixedly installed with a sliding seat (5), the inner part of the sliding seat (5) is screwedly installed with a lead screw (6), and the front side outer surface of the lead screw (6) is fixedly installed with a servo motor (7).

2. A piezoelectric thin film sensor static pressure test bench as claimed in claim 1, characterized in that: The upper surface of the tray (4) is fixedly installed with a positioning seat (8), and the front side outer surface of the positioning seat (8) is slidably installed with a limiting block (9).

3. A piezoelectric thin film sensor static pressure test bench as claimed in claim 1, characterized in that: The upper surface of the workbench (1) is fixedly installed with a plurality of sliding rails (10), and the inner part of the sliding rail (10) is slidably installed with an electric sliding block (11).

4. A piezoelectric thin film sensor static pressure test bench as claimed in claim 3, characterized in that: The inner part of the electric sliding block (11) is fixedly installed with a plurality of hydraulic cylinders (12), and the lower surface of the hydraulic cylinder (12) is fixedly installed with a pressing block (13).

5. A piezoelectric thin film sensor static pressure test station as in claim 1, wherein: The lower surface of the workbench (1) is fixedly installed with a power distribution cabinet (14), and the front side outer surface of the power distribution cabinet (14) is hingedly installed with an access door (15).

6. A piezoelectric thin film sensor static pressure test bench as claimed in claim 5, characterized in that: The left and right outer surfaces of the power distribution cabinet (14) are fixedly installed with air vents (16), and the outer surface of the air vent (16) is fixedly installed with a protective net (17).

7. A piezoelectric thin film sensor static pressure test station as in claim 1, wherein: The upper surface right side of the workbench (1) is fixedly installed with a control console (18).

8. A piezoelectric thin film sensor static pressure test station as in claim 1, wherein: The upper surface left side of the workbench (1) is fixedly installed with a storage box (19), and the outer surface of the storage box (19) is hingedly installed with a storage box cabinet door (20).

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