CN109405885B - Automatic measuring instrument for light color electric characteristic detection under flexible electronic quasi-static pressure - Google Patents
Automatic measuring instrument for light color electric characteristic detection under flexible electronic quasi-static pressure Download PDFInfo
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- CN109405885B CN109405885B CN201811480474.5A CN201811480474A CN109405885B CN 109405885 B CN109405885 B CN 109405885B CN 201811480474 A CN201811480474 A CN 201811480474A CN 109405885 B CN109405885 B CN 109405885B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention discloses an automatic measuring instrument for detecting light, color and electric characteristics of flexible electronic devices or products in a quasi-static pressure state, which consists of a computer, a data acquisition card, a current measuring module, a program-controlled voltage source module, a triaxial moving platform, a brightness spectrum measuring module and a pressure generating/controlling device. Wherein the computer is used as a core for controlling hardware and software programs; the data acquisition card comprises a digital-to-analog (DA) conversion card, an analog-to-digital (AD) conversion card and an input-output (IO) switching value card; the current measuring module converts a current signal of the flexible electronic into a voltage signal; the program-controlled voltage source applies a voltage signal to the flexible electrons; the three-axis moving platform is used for controlling the three-dimensional movement of the brightness spectrum measuring module; the pressure generating/controlling device is used for applying pressure to the flexible electronic.
Description
Technical Field
The invention relates to an automatic measuring instrument for detecting light, color and electric characteristics of flexible electronic devices or products under quasi-static pressure, which is suitable for measuring the light, color and electric comprehensive properties of flexible electronic devices and products in scientific research and industrial production, such as flexible organic light emitting diodes, flexible display screens, flexible light detector devices and the like.
Background
In recent years, with the rapid development of optoelectronic devices, especially organic light emitting devices, flexible display screens based on organic light emission have begun to be industrialized, and become hot spots for consumer products such as mobile phones. The life time research of flexible electronics is mainly focused on both bending and compression characteristics of the sample. It is inevitable that the flexible electronic is squeezed during use, and the rule of influence of the magnitude of pressure and the form of pressure (X direction, Y direction or diagonal direction) on the performance of the flexible electronic and the limit of the pressure that the flexible electronic can bear are very important for practical application of the flexible electronic. There is little research on the behavior of flexible electrons in a stressed state, mainly because there is no corresponding test research equipment. The invention aims at the current situation, and designs and develops an automatic measuring instrument for detecting the optical, color and electrical characteristics of flexible electronic devices or products under a quasi-static pressure state.
Disclosure of Invention
The invention aims to design an automatic measuring instrument for detecting the optical, color and electrical characteristics of a flexible electronic device or a product in a quasi-static pressure state, and provides a feasible scheme for measuring the flexible electronic pressure characteristic.
The invention is implemented by adopting the following technical scheme:
an automatic measuring instrument for detecting light, color and electric characteristics of flexible electronic devices or products under quasi-static pressure state is composed of seven parts, as shown in fig. 1, respectively: the system comprises a computer, a data acquisition card, a current measurement module, a program-controlled voltage source module, a brightness spectrum measurement module, a triaxial mobile platform and a pressure generation/control device. Wherein the computer serves as a center for hardware and program control; the data acquisition card comprises a digital-to-analog (DA) conversion card, an analog-to-digital (AD) conversion card and an input-output (IO) switching value card; the current measuring module converts a current signal of the flexible electronic into a voltage signal; the program-controlled voltage source provides a required voltage signal for the flexible electronic; the brightness spectrum measuring module is used for measuring the light color parameters of the flexible electrons; the three-axis moving platform is used for controlling the three-dimensional movement of the brightness spectrum measuring module; the pressure generating/controlling device is used for applying pressure to the flexible electronic.
Drawings
FIG. 1 is a block diagram of an automatic measuring instrument for detecting light, color, and electrical characteristics of a flexible electronic device or product under quasi-static pressure.
Detailed Description
The aim of the invention is achieved by the following measures:
an automatic measuring instrument for detecting light, color and electric characteristics of flexible electronic devices or products under quasi-static pressure state is composed of seven parts, as shown in fig. 1, respectively: the system comprises a computer, a data acquisition card, a current measurement module, a program-controlled voltage source module, a brightness spectrum measurement module, a triaxial mobile platform and a pressure generation/control device. The functions and the working principles of each part are as follows:
the computer is used as a center for controlling hardware and software, and is connected with the data acquisition card, the triaxial mobile platform and the brightness spectrum measuring module through data interfaces. The computer measurement control software is written by VC or VB.
The data acquisition card comprises a digital-to-analog (DA) conversion card, an analog-to-digital (AD) conversion card and an input-output (IO) switching value card. And the computer is connected with the USB interface, the serial port interface or the PCI interface. The DA conversion card (16 bits and above) converts the digital signal output by the computer into an analog voltage signal and outputs the analog voltage signal to the program-controlled voltage source; the AD conversion card (24 bits and above) converts the voltage signal output by the current measurement module into a digital signal, and then the digital signal is read by a computer; the IO switch card is used for controlling the program-controlled voltage source, the current measuring module and the tension generating/controlling device.
The current measuring module converts the current signal of the flexible electronic into a voltage signal according to a certain amplification factor. Can realize that the current signal between 1 nA and 1A is amplified by 10 times 9 ~10 0 V/A (total of 10 amplification factors) is converted into a voltage signal of 1-10V, then the voltage signal is converted into a digital signal by an AD conversion card, and finally the digital signal is read and processed by a computer.
The program-controlled voltage source module amplifies the analog voltage (-10V to +10V) output by the DA conversion card to a voltage value required to be applied by flexible electronic measurement according to a certain amplification factor. Can realize the output of various scanning modes of-200V voltage.
The brightness measurement module is connected with the computer through a USB or serial port and is used for measuring parameters such as brightness and spectrum of the flexible electronic, for example, light color parameters such as brightness, relative spectrum power distribution, color coordinates, color temperature and color rendering index of the flexible light emitting device and the flexible display screen, and the measured parameters are read and processed by the computer.
The three-axis mobile platform is connected with a computer through a serial interface and consists of a controller (lower computer), a stepping motor and an XYZ mobile shaft, the computer is used as an upper computer to send coordinate positions of XYZ three-axis movement to the mobile platform, and the mobile platform moves the brightness spectrum measurement module to the corresponding position.
The pressure generating/controlling device consists of a motor, a driver, a linear sliding table, a pressure sensor, a frame and a control circuit. The motor can adopt a stepping motor or a servo motor, the motor is connected with the linear sliding table through a coupler and drives a sliding block on the sliding table to do linear motion, an optical axis is arranged on the sliding block, a pressure sensor and a pressure plate are arranged at the upper end of the optical axis through an adapter plate, and the pressure plate is used for placing a sample to be tested; the pressure sensor is installed below the pressure plate and detects pressure in real time. The motor runs to extrude the sample upwards to the quartz plate on the frame, the brightness measurement module can detect the photoelectric characteristic of the sample through the quartz plate, the pressure sensor converts the pressure signal into an analog voltage signal, the analog voltage signal is collected and processed by the AD conversion card, when the real-time pressure is greater than a set pressure value, the electrode runs reversely, the pressure is released, and thus the cycle is repeated, and a dynamic stable pressure is realized.
Claims (1)
1. An automatic measuring instrument for detecting light color electric characteristics under flexible electronic quasi-static pressure is characterized by comprising the following parts:
the system comprises a computer, a data acquisition card, a current measurement module, a program-controlled voltage source module, a triaxial mobile platform, a brightness spectrum measurement module and a pressure generation/control device, wherein the data acquisition card comprises a digital-to-analog (DA) conversion card, an analog-to-digital (AD) conversion card and an input-output (IO) switching value card, and is connected with the computer through a USB, a serial port or a PCI interface, and the DA conversion card converts a digital signal output by the computer into an analog voltage signal and outputs the analog voltage signal to the program-controlled voltage source; the AD conversion card converts the voltage signal output by the current measurement module into a digital signal, and then the digital signal is read by a computer; the IO switching value card is used for controlling a program-controlled voltage source, a current measurement module and a tension generation/control device, the current measurement module converts a current signal of flexible electronics into a voltage signal according to a certain amplification factor, and the current signal between 1 nA and 1A can be realized according to the amplification factor of 10 9 ~10 0 V/A is converted into a voltage signal of 1-10V, then the voltage signal is converted into a digital signal by an AD conversion card, finally the digital signal is read and processed by a computer, a program-controlled voltage source module amplifies the analog voltage output by the DA conversion card to a voltage value required to be applied by flexible electronic measurement according to a certain amplification factor, multiple scanning modes of-200V voltage output can be realized, a three-axis moving platform is connected with the computer through a serial interface and consists of a controller, a stepping motor and an XYZ moving axis, and the computer is used as an upper computer to send coordinates of XYZ three-axis movementThe position is given to the mobile platform, the mobile platform moves the brightness spectrum measuring module to a corresponding position, the brightness measuring module is connected with the computer through a USB (universal serial bus) or a serial port, the mobile platform moves through a triaxial mobile platform and is used for measuring brightness and spectrum parameters of flexible electrons, the pressure generating/controlling device consists of a motor, a driver, a linear sliding table, a pressure sensor, a frame and a control circuit, the motor can adopt a stepping motor or a servo motor, the motor is connected with the linear sliding table through a coupler and drives a sliding block on the sliding table to do linear motion, an optical axis is arranged on the sliding block, a pressure sensor and a pressure plate are arranged at the upper end of the optical axis through an adapter plate, and the pressure plate is used for placing a sample to be measured; the pressure sensor is arranged below the pressure plate, the pressure is detected in real time, the motor operates to extrude the sample upwards to the quartz plate on the frame, the brightness measurement module can detect the photoelectric characteristic of the sample through the quartz plate, the pressure sensor converts the pressure signal into an analog voltage signal, the analog voltage signal is collected and processed by the AD conversion card, when the real-time pressure is larger than a set pressure value, the electrode reversely operates to release the pressure, and the cycle is repeated to realize a dynamic stable pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811480474.5A CN109405885B (en) | 2018-12-05 | 2018-12-05 | Automatic measuring instrument for light color electric characteristic detection under flexible electronic quasi-static pressure |
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| CN201811480474.5A CN109405885B (en) | 2018-12-05 | 2018-12-05 | Automatic measuring instrument for light color electric characteristic detection under flexible electronic quasi-static pressure |
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| CN109405885A CN109405885A (en) | 2019-03-01 |
| CN109405885B true CN109405885B (en) | 2023-05-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245923A (en) * | 2013-04-25 | 2013-08-14 | 上海大学 | Quick batch test device for light, color and electricity performance of LED |
| KR20150001155A (en) * | 2013-06-26 | 2015-01-06 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| CN106426089A (en) * | 2016-09-30 | 2017-02-22 | 华南理工大学 | Flexible three-degree of freedom parallel mechanism vibration detection control device and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI420086B (en) * | 2008-10-15 | 2013-12-21 | Ind Tech Res Inst | Flexible electronics pressure sensing apparatus and manufacturing method thereof |
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- 2018-12-05 CN CN201811480474.5A patent/CN109405885B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245923A (en) * | 2013-04-25 | 2013-08-14 | 上海大学 | Quick batch test device for light, color and electricity performance of LED |
| KR20150001155A (en) * | 2013-06-26 | 2015-01-06 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| CN106426089A (en) * | 2016-09-30 | 2017-02-22 | 华南理工大学 | Flexible three-degree of freedom parallel mechanism vibration detection control device and control method |
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| CN109405885A (en) | 2019-03-01 |
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