CN107478268B - A comprehensive performance testing system for electronic skin - Google Patents

Abstract

The invention belongs to the field of electronic skin testing and discloses an electronic skin comprehensive performance testing system. The system includes a control module, an information transmission module and a performance testing module. On the one hand, the control module accepts external instructions and processes them and transmits them to the circuit; on the other hand, it receives signals fed back from the information transmission module and processes, displays and saves them. The information transmission module includes a regulating circuit and a signal acquisition and conditioning circuit. The regulating circuit is used to accept instructions from the control module and realize the regulation of the performance test module. The collection and conditioning circuit is used to capture the signal of the performance test module and condition it After feedback to the control module, the performance test module provides a test environment for the electronic skin to be tested, and leads out the test signal. Through the present invention, the test and characterization of the comprehensive performance of the electronic skin can be completed collaboratively in a modular manner, and it is an important test device for transforming scientific research achievements in the field of flexible electronics into practical products.

Description

A comprehensive performance testing system for electronic skin

technical field

The invention belongs to the field of electronic skin testing, and more specifically relates to an electronic skin comprehensive performance testing system.

Background technique

Electronic skin is a sensory system that can be processed into various shapes and can be attached to the surface of the device like clothes to sense external stimuli, such as temperature, light, gas, wind, vibration, etc. Applied to medical, robotics, wearable devices and other fields. Today's electronic skin is mostly in the stage of scientific research and development. The developed electronic skin materials need to be tested in detail. These properties include what external stimuli can be sensed, how sensitive are these different types of external stimuli, and the electronic skin itself. Stable performance under different external conditions and so on. These performance tests of electronic skin require professional equipment to complete, but there is no comprehensive performance test equipment for electronic skin on the market.

Contents of the invention

In view of the above defects or improvement needs of the prior art, the present invention provides an electronic skin comprehensive performance testing system, which solves the technical problem of electronic skin comprehensive performance testing through the integrated design of multiple test units.

In order to achieve the above object, according to the present invention, a comprehensive performance testing system for electronic skin is provided, the system includes a control module, an information transmission module and a performance testing module, and is characterized in that:

On the one hand, the control module accepts external instructions and processes them and transmits them to the information transmission module; on the other hand, it accepts signals fed back from the information transmission module and processes, displays and saves them;

The information transfer module includes an adjustment circuit and a signal acquisition and conditioning circuit, the adjustment circuit is used to accept instructions from the control module and realize the adjustment of the performance testing module, and the acquisition and conditioning circuit is used to capture the performance The signal of the test module is adjusted and fed back to the control module;

The performance test module includes a heat-sensitive performance test unit, a photosensitive performance test unit, a gas-sensitive performance test unit, a bending performance test unit, a tensile performance test unit, a pressure-sensitive performance test unit, a wind pressure performance test unit, and a sound pressure performance test unit. unit, a static pressure performance test unit, a dynamic static pressure performance test unit and a vibration performance test unit, are used to provide a test environment for the electronic skin to be tested, and then obtain a state signal of the electronic skin to be tested in the test environment, and The state signal is fed back to the information transmission module after being extracted.

Further preferably, the thermal performance testing unit includes a heating element and a temperature sensor for providing the required temperature testing environment; the photosensitive performance testing unit includes a light excitation source for providing the required lighting testing environment; The gas-sensing performance test unit includes an air source and an air distribution box for providing the required atmosphere test environment; the bending performance test unit includes a curvature master block, a motor and a cam pressure regulating mechanism for providing the required bending Deformation test environment; the tensile performance test unit includes a stretching device for providing the required tensile deformation test environment; the pressure-sensitive performance test unit includes wind pressure, sound pressure, static pressure, dynamic static pressure and vibration A performance test unit is used to provide the required pressure test environment, wherein the wind pressure performance test unit includes a pressure sensor, an air source and an air distribution box, and the sound pressure unit includes a buzzer and a decibel test head, and the The static pressure performance testing unit includes a pogo pin and a pressure sensor, the dynamic static pressure performance testing unit includes a pogo pin, a pressure sensor, a motor and a cam pressure regulating mechanism, and the vibration performance testing unit includes a motor and a pressure sensor.

Further preferably, the heating element is preferably a heating chip with nickel wire encapsulated in ceramics.

Further preferably, the light excitation source is preferably an LED light source.

Further preferably, the gas distribution box preferably adopts a three-channel mass flow meter.

Further preferably, two primary and secondary blocks with the same curvature are preferably used as the primary and secondary blocks of curvature.

Further preferably, the motor preferably adopts a low-voltage DC speed-regulating motor.

Further preferably, the buzzer preferably adopts a low-voltage regulator buzzer.

Further preferably, the motor preferably adopts a miniature low-voltage vibration motor.

Further preferably, the heat-sensitive performance test unit, gas-sensitive performance test unit, light-sensitive performance test unit, bending performance test unit, tensile performance test unit and pressure-sensitive performance test unit are connected in parallel, except for the wind pressure, static pressure, Except that the dynamic static pressure and vibration performance testing unit and the bending performance testing unit or tensile performance testing unit cannot be tested at the same time, the others can be combined and tested simultaneously.

Generally speaking, compared with the prior art, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

1. Through the integration of modular functions, the present invention can coordinately complete the testing and characterization of the comprehensive performance of the electronic skin in a modular manner, and can provide various testing environments for the electronic skin to be tested. It is the transformation of scientific research achievements in the field of flexible electronics into practical Important testing equipment for products;

2. Through the mutual cooperation of two or more test units, the present invention provides multiple test environments for the electronic skin at the same time, thereby realizing simultaneous testing of multiple properties, shortening test time, and reducing test costs;

3. The performance system provided by the present invention includes three modules with simple structure, highly integrated functions and convenient operation.

Description of drawings

Fig. 1 is a schematic structural diagram of an electronic skin comprehensive testing system constructed according to a preferred embodiment of the present invention;

Fig. 2 is a schematic structural view of the test cavity of the electronic skin comprehensive test system built according to the preferred embodiment of the present invention;

Fig. 3 is the schematic diagram of the heat-sensitive property testing unit constructed according to the preferred embodiment of the present invention;

Fig. 4 is the schematic diagram of the photosensitivity performance test constructed according to the preferred embodiment of the present invention;

Fig. 5 is a schematic diagram of a bending performance test constructed according to a preferred embodiment of the present invention;

Figure 6 is a schematic diagram of a tensile property test constructed according to a preferred embodiment of the present invention;

Fig. 7 is a schematic diagram of a wind pressure performance test constructed according to a preferred embodiment of the present invention;

Fig. 8 is a schematic diagram of a sound pressure performance test constructed according to a preferred embodiment of the present invention;

Fig. 9 is a schematic diagram of static pressure and dynamic static pressure performance tests constructed according to a preferred embodiment of the present invention;

Fig. 10 is a schematic diagram of a vibration performance test constructed according to a preferred embodiment of the present invention.

Throughout the drawings, the same reference numerals are used to designate the same elements or structures, wherein:

1-computer 2-circuit 3-performance test module 4-control software 5-control circuit 6-acquisition and conditioning circuit 7-thermal performance test unit 8-photosensitive performance test unit 9-air sensitivity test unit 10-bending performance test Unit 11 Tensile performance test unit 12-Pressure sensitive performance test unit 13-Wind pressure unit 14-Sound pressure unit 15-Static pressure unit 16-Dynamic static pressure unit 17-Vibration unit 18-Inside test chamber device 19-Outside test chamber Device 20-heating plate 21-temperature sensor 22-LED light source 23-device outside the test chamber including air source 24-gas distribution box 25-curvature master block 26-DC speed regulating motor 27-cam pressure regulating mechanism 28-stretching device 29-pressure sensor 30-buzzer 31-decibel test head 32-pogo pin 33-vibration motor 34-light source holder 35-sealing ring A 36-cavity cover 37-sealing ring B 38-ceramic plate 39-electronics to be tested Skin 40-cavity seat 41-zipper 42-airway connector 43-breathable partition 44-signal lead out circuit board 45-heating plate pressing plate 46-LED light source fixing plate 47-quartz glass 48-quartz glass fixing plate 49-pressure Tightening screw fixing seat 50-compression screw 51-electronic skin pressing block 52-stretching seat 53-stretching guide rail 54-stretching screw rod 55-stretching mechanism frame 56-electronic skin fixing seat 57-electronic skin pressing block guide rail 58-airway joint 59-airway joint fixing plate 60-cam 61-cam roller 62-guide rod 63-pressure rod 64-guiding cylinder 65-guide cylinder fixing plate 66-spring pin

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

An electronic skin comprehensive performance testing system, in which the testing system mainly includes a control module, an information transmission module and a performance testing module 3, wherein the control module is a computer 1, and the information transmission module corresponds to a circuit 2.

Special control software is installed on the computer 1, and the computer software controls the circuit by executing commands, and processes, displays and saves the captured signals on the computer;

The circuit 2 is mainly composed of a control circuit 5 and a signal acquisition and conditioning circuit 6 . The control circuit 5 executes computer instructions to control the function execution of each test unit; the signal acquisition and conditioning circuit 6 captures signals from different test unit conditions, and uploads them to the computer after the signal conditioning is completed;

The performance test module 3 provides a test environment including temperature, light, gas type and concentration, bending deformation, tensile deformation, wind pressure, sound pressure, static pressure, dynamic static pressure, and vibration for the electronic skin 39 to be tested. The corresponding test environment is composed of thermal performance testing unit 7, photosensitive performance testing unit 8, gas-sensing performance testing unit 9, bending performance testing unit 10, tensile performance testing unit 11 and pressure-sensitive performance testing unit 12, wherein the pressure-sensitive performance testing unit The sensitivity test unit 12 can provide the electronic skin with a pressure test environment similar to the actual environment including wind pressure, sound pressure, static pressure, dynamic static pressure and vibration.

The performance testing module 3 is mainly composed of a device 18 inside the test chamber and a device 19 outside the test chamber. The device in the test chamber includes a heating plate 20, a temperature sensor 21, an LED light source 22, a curvature master block 25, a stretching device 28, a pressure sensor 29, a buzzer 30, a decibel test head 31, a pogo pin 32, and a vibration motor 33. The device outside the test chamber includes an air source 23 , an air distribution box 24 , a DC speed regulating motor 26 and a cam pressure regulating mechanism 27 .

Fig. 2 is a schematic structural view of the test chamber of the electronic skin comprehensive test system built according to the preferred embodiment of the present invention, as shown in Fig. 2, the device 18 in the test chamber is mainly sealed by the chamber cover sealing plate 24 and the chamber cover Board sealing ring 25, cavity cover 26, cavity seat cavity cover joint part is made up of sealing ring 27, cavity seat 40, zipper 41, signal lead-out circuit board 44. The cavity cover sealing plate 24 is connected with the cavity cover 26 by screws, and the cavity cover sealing plate is sealed with a sealing ring 25; the cavity cover 26 is connected with the cavity seat 40 by a zipper 41, and the cavity seat cavity cover The junction is sealed with a sealing ring 27; the signal lead-out circuit board 44 is fixed on the cavity base 40 and sealed by a high-temperature sealant.

FIG. 3 is a schematic diagram of a thermosensitive performance testing unit constructed according to a preferred embodiment of the present invention. As shown in FIG. After the computer software sets the working temperature, the heating sheet 20 is heated, and the temperature sensor 21 detects the current temperature in real time. According to the temperature fed back, the working state of the heating sheet 20 is controlled in real time through the computer software terminal algorithm, thereby providing a stable temperature test for the electronic skin 39. surroundings.

FIG. 4 is a schematic diagram of a photosensitive performance test constructed according to a preferred embodiment of the present invention. As shown in FIG. 4 , the lighting function of the photosensitive performance testing unit 8 is mainly provided by an LED light source 22 . At the same time, in order to meet the sealing conditions during the gas sensitivity test, the LED light source 22 is fixed on the LED light source fixing plate 46 by screws, and the LED light source fixing plate 46 is fixed on the cavity cover 26 by screws; The glass fixing plate 48 is fixed on the cavity cover 26, and the cavity cover 26 and the quartz glass fixing plate 48 are connected with screws and sealed with a sealant. The above structure provides a stable light test environment for the electronic skin 39 .

As shown in Figures 1 and 2, the gas-sensing performance testing unit 9 is mainly composed of a gas source 22 and a gas distribution box 24. The gas source provides the type of gas required, and the gas distribution box provides the concentration and flow of the gas required. The gas enters and exits the cavity seat 40 through the gas line pipe through the gas line joint 42 . After the gas enters the cavity base 40 , the gas is uniformly distributed in the cavity base 40 through the two-stage airflow screen 42 , thereby providing a stable gas testing environment for the electronic skin 39 .

FIG. 5 is a schematic diagram of a bending performance test constructed according to a preferred embodiment of the present invention. As shown in FIG. 5 , the bending performance testing unit 10 is mainly composed of a curvature master block 25 . A stable bending test environment can be provided for the electronic skin 39 by changing the curvature of the joint surface of the curvature master block 25 .

Fig. 6 is a schematic diagram of the tensile performance test constructed according to a preferred embodiment of the present invention. As shown in Fig. 6, the tensile performance testing unit 10 is mainly composed of a compression screw 50, a compression screw holder 49, an electronic skin compact 51, a stretching seat 52, a stretching guide rail 53, a stretching screw rod 54, an electronic skin briquetting guide rail 57, an electronic skin fixing seat 56, and a stretching mechanism frame 55 are formed. Rotate the pressing screw 50 to press the electronic skin 39 on the stretching seat 52 and the electronic skin fixing seat 56 through the electronic skin pressing block 51 . Turn the stretching screw 54, the stretching seat 52 moves to the right, and the electronic skin 39 is stretched, thereby providing a stable stretching test environment for the electronic skin 39.

Fig. 7 is the schematic diagram of the wind pressure performance test that is built according to the preferred embodiment of the present invention, as shown in Fig. Joint 58 and gas path joint fixing plate 59 are formed. The gas path joint 58 is connected and sealed with the gas path joint fixing plate 59 through pipe threads, the gas path joint fixing plate 59 is connected with the cavity cover 26 through screws, and sealed with the sealing ring 25 through the cavity cover sealing plate. By adjusting the flow rate of the air source 22 and the gas distribution box 24, the electronic skin 39 is provided with a constant flow rate of air, thereby providing a stable wind pressure 12 test environment for the electronic skin 39.

FIG. 8 is a schematic diagram of a sound pressure performance test constructed according to a preferred embodiment of the present invention. As shown in FIG. 8 , the sound pressure 14 in the pressure-sensitive performance test unit 12 mainly consists of a buzzer 20 and a decibel test head 21. The control software on the computer 1 sends commands to let the control circuit 5 provide different power supply voltages to the buzzer 20, so that the buzzer 20 emits buzzing sounds of different decibels, and then detects the sound level emitted by the decibel test head 21 , so as to realize the output of different voltages to make the buzzer 20 output buzzing sounds in different decibels, thereby providing a stable sound pressure 14 test environment for the electronic skin 39 .

Fig. 9 is a schematic diagram of static pressure and dynamic static pressure performance test constructed according to a preferred embodiment of the present invention, as shown in Fig. , Cam 60, cam roller 61, guide block 62, guide rod 62, guide cylinder 64, guide cylinder fixed plate 65, spring pin 66 form. The motor 26 is fixed on the frame; the cam 60 is fixed on the motor 26; the cam roller 61 is fixed on the guide block 62, and the front end of the cam roller 61 is installed in the cam groove on the cam 60; the guide rod 62 is fixed on the guide block 62 and connected with the linear bearing in the guide cylinder 64, the Y-shaped sealing ring in the guide cylinder 64 realizes the sealing effect; the guide cylinder 64 and the guide cylinder fixing plate 65 are connected and sealed by pipe threads; the guide cylinder fixing plate 65 is screwed It is connected with the cavity cover 26 and sealed with the sealing ring 25 through the cavity cover sealing plate; the pogo pin 66 is fixed at the end of the guide rod 62; the control software on the computer 1 sends a command to let the control circuit 5 provide different duty for the motor 26 The ratio signal controls the speed of the motor 26, and the motor 26 drives the cam 60 to rotate. The shape of the cam groove on the cam 60 makes the cam roller 61 move up and down along the direction of the guide rod 62 according to a certain time and distance, thereby driving the guide rod 62, The pogo pin 66 moves up and down, thereby providing pressure to the electronic skin 39 . By controlling the rotation speed of the motor 26 , the trajectory of the cam 60 , and the stiffness coefficient of the pogo pin 66 , the electronic skin 39 can be provided with different steady-state static pressures and dynamic static pressures.

FIG. 10 is a schematic diagram of a vibration performance test constructed according to a preferred embodiment of the present invention. As shown in FIG. 10 , the vibration 17 in the pressure-sensitive performance testing unit 12 is mainly composed of a vibration motor 22 and a pressure sensor 29 . Send commands through the control software on the computer 1 to allow the control circuit 5 to provide different power supply voltages to the vibration motor 22, so that the vibration motor 22 produces vibrations with different vibration frequencies and forces, and then the pressure sensor 29 detects the frequency and vibration of the generated vibrations. The size of the force, so as to realize the output of different voltages to make the vibration motor 22 output vibrations of different vibration frequencies and forces, thereby providing a stable vibration 17 test environment for the electronic skin 39 .

The heat-sensitive performance test unit, gas-sensitive performance test unit, light-sensitive performance test unit, bending performance test unit and tensile performance test unit can be tested independently or combined in any combination. The sound pressure test can be combined with the heat-sensitive performance test unit, gas-sensitive performance test unit, light-sensitive performance test unit, bending performance test unit and tensile performance test unit for simultaneous testing. Wind pressure, static pressure, dynamic static pressure and vibration test can only be tested at the same time with any combination of heat-sensitive performance test unit, gas-sensitive performance test unit and photosensitive performance test unit, and cannot be tested simultaneously with bending performance test unit or tensile performance test unit carry out testing. The comprehensive performance test system of the electronic skin cooperates to complete the test and characterization of the comprehensive performance of the electronic skin in a unitized manner, and can provide the electronic skin to be tested with information including temperature, light, gas type and concentration, bending deformation, stretching deformation, The test environment including wind pressure, sound pressure, static pressure, dynamic static pressure and vibration is an important test equipment for the transformation of scientific research achievements in the field of flexible electronics into practical products.

It is easy for those skilled in the art to understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention, All should be included within the protection scope of the present invention.

Claims (10)

1. a kind of electronic skin comprehensive performance testing system, which includes control module, information transfer module and performance test Module, it is characterised in that:

On the one hand the control module receives extraneous instruction and passes to the information transfer module after being processed to, on the other hand Receive the signal fed back from the information transfer module and is handled, displayed and saved；

The information transfer module includes adjusting circuit and signal acquisition and conditioning circuit, and the adjusting circuit comes from for receiving Adjusting of the instruction and realization of control module to the performance test module, the acquisition is with conditioning circuit for capturing the property Can test module signal and feed back to the control module after improving it；

The performance test module includes thermo-sensitive property test cell, photosensitive property test cell, air-sensitive performance test cell, curved Bent performance test unit, tensile property test cell, voltage-dependent characteristic test cell, wind pressure property test cell, acoustic pressure performance are surveyed Unit, static pressure performance test unit, dynamic static pressure performance test unit and vibration performance test cell are tried, for being electricity to be tested Sub- skin provides test environment, then obtains status signal of the electronic skin to be tested in the test environment, and should Status signal feeds back to the information transfer module after drawing.

2. a kind of electronic skin comprehensive performance testing system as described in claim 1, which is characterized in that the thermo-sensitive property is surveyed Trying unit includes heating element and temperature sensor, for providing required temperature test environment；The photosensitive property test is single Member includes laser exciter, tests environment for providing required illumination；The air-sensitive performance test cell includes gas source and distribution Case tests environment for providing required atmosphere；The bending property test cell includes curvature primary and secondary block, motor and cam tune Press mechanism tests environment for providing required Bending Deformation；The tensile property test cell includes stretching device, for mentioning Environment is tested for required tensile deformation；The voltage-dependent characteristic test cell includes wind pressure, acoustic pressure, static pressure, dynamic static pressure and vibration Dynamic performance test unit, for providing required pressure test environment, wherein the wind pressure property test cell includes that pressure passes Sensor, gas source and air chest, the acoustic pressure unit include buzzer and decibel measuring head, and the static pressure performance test unit includes Spring needle and pressure sensor, the dynamic static pressure performance test unit include spring needle, pressure sensor, motor and cam tune Press mechanism, the vibration performance test cell includes motor and pressure sensor.

3. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the heating element is excellent It is selected as the heating sheet that nickel wire is encapsulated in ceramics.

4. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the laser exciter is excellent Choosing uses LED lamp source.

5. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the air chest is preferred Using triple channel mass flowmenter.

6. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the curvature primary and secondary block It is preferred that using the identical two sub- mother tubers of curvature.

7. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the motor is preferably adopted With low-voltage direct speed regulating motor.

8. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the buzzer is preferred Using low pressure pressure regulation buzzer.

9. a kind of electronic skin comprehensive performance testing system as claimed in claim 2, which is characterized in that the motor is preferably adopted With Miniature low voltage vibrating motor.

10. such as a kind of described in any item electronic skin comprehensive performance testing systems of claim 1-9, which is characterized in that described Thermo-sensitive property test cell, air-sensitive performance test cell, photosensitive property test cell, bending property test cell, tensile property Test cell and voltage-dependent characteristic test module are in parallel, remove the wind pressure, static pressure, dynamic static pressure and vibration performance test cell and institute State bending property test cell or tensile property test cell cannot test simultaneously it is outer, it is other can any combination test simultaneously.