CN107144704B - Self-driven ultraviolet light and wind speed sensing integrated system - Google Patents
Self-driven ultraviolet light and wind speed sensing integrated system Download PDFInfo
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- CN107144704B CN107144704B CN201710272624.2A CN201710272624A CN107144704B CN 107144704 B CN107144704 B CN 107144704B CN 201710272624 A CN201710272624 A CN 201710272624A CN 107144704 B CN107144704 B CN 107144704B
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- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
Abstract
The invention provides a self-driven ultraviolet light and wind speed sensing integrated system, which can self-drive ultraviolet light and air flow in a detection environment and realize the visualization of ultraviolet light and wind signals, wherein the self-driven ultraviolet light detection function part is based on a heterojunction formed by a zinc oxide film and a nickel oxide film, an electric field built in the heterojunction region drives a photogenerated carrier cavity pair to be separated, so as to realize the self-driven ultraviolet light detection, the self-driven wind speed detection function part is based on a contact separation type friction nano generator, polytetrafluoroethylene and aluminum foil are respectively arranged at two ends of a friction sequence, when air flows, the self-driven ultraviolet light and the photogenerated current are in contact separation, when the air flow speeds are different, the generated current values are different, and the acquired current value is compared with a preset current threshold value through the current acquisition and analysis of Labview software, and (4) lighting different color bulbs on different software interfaces so as to visually detect ultraviolet light and wind in the environment.
Description
Technical Field
The invention belongs to the field of preparation of nanometer functional devices, and particularly relates to a self-driven ultraviolet light and wind speed sensing integrated system.
Background
The self-driven nanometer device has the advantages of small volume, stable performance, low energy consumption and the like, and is widely applied to the fields of environment detection, health monitoring and the like, such as ultraviolet detection, wind detection, in-vivo enzyme concentration detection, human body temperature detection and the like. But single function devices can only detect one type of signal and are not suitable for increasingly complex detection environments, so that multifunctional detection devices become highly desirable.
The ultraviolet detector plays a very important role in the fields of military, civil use and the like, and can be used for monitoring marine oil pollution, flame detection and the like in the civil use; in military, the device can be used for ultraviolet guidance, optical communication and the like. In the years, people are more and more concerned about self-driven nanometer devices due to the energy crisis. Self-driven ultraviolet light detectors are mainly classified into two main categories: one is based on heterojunction, and the other is to construct a self-driven nano system. The zinc oxide is used as a direct band gap wide forbidden band semiconductor, the forbidden band width reaches 3.37eV, the exciton confinement energy reaches 60meV, and the zinc oxide is a good material for ultraviolet detection. Self-driven ultraviolet detectors based on ZnO heterojunctions can be classified into Schottky type, pn type and the like.
The sensors of construction force or motion may be based on the following mechanisms: piezoelectric effect, piezoresistive effect and triboelectric effect. The motion sensor based on the triboelectrification effect has the advantages of low manufacturing cost, long service life, high power density and the like. The motion sensor constructed based on the triboelectrification effect can be used for detecting the pulse of a human body, wind in the nature, humidity in the environment, heavy ions and the like.
The visualization of the signals plays an important role in the field of application of the sensor. The signal visualization can improve the monitoring efficiency of people on the signal in the environment, and people can apply the signal visualization to robotics, human-computer interfaces, touch simulation display and the like.
Based on the research background, a self-driven visual ultraviolet light and wind detection system is designed and constructed, can realize self-driven ultraviolet light detection and wind speed detection, and can visualize the two signals.
Disclosure of Invention
In order to solve the problems, the invention provides a self-driven ultraviolet light and wind speed sensing integrated system, which is characterized in that two self-driven devices, namely a self-driven ultraviolet light detector and a wind speed detector, are simultaneously prepared on the same substrate and integrated into a whole to construct a self-driven multifunctional detection device, and the current value generated by the device is analyzed through a Labview software interface, so that ultraviolet light detection and wind speed detection are completed;
furthermore, the system comprises a self-driven detection ultraviolet light detector, a self-driven wind speed detector and an integrated analysis unit, wherein the self-driven detection ultraviolet light detector and the self-driven wind speed detector are both connected with the integrated analysis unit;
a self-driven detection ultraviolet light detector capable of self-driven detection of ultraviolet light signals;
the self-driven wind speed detector can self-drive to detect a wind signal;
the integrated analysis unit integrates and analyzes signals collected by the self-driven detection ultraviolet light detector and the self-driven wind speed detector and performs signal distinguishing visualization;
furthermore, the self-driven ultraviolet detection function part in the self-driven detection ultraviolet detector is based on a heterojunction formed by a zinc oxide film and a nickel oxide film, and an electric field built in the heterojunction region drives a photon-generated carrier hole pair to be separated, so that self-driven ultraviolet detection is realized;
furthermore, the self-driven wind signal detection function in the self-driven wind speed detector is based on a contact separation type friction nano generator, polytetrafluoroethylene and aluminum foil are respectively arranged at two ends of a friction sequence, and are in contact separation to generate current when air flows, and the generated current values are different when the air flow speeds are different, so that the wind speed is measured;
further, the integrated analysis unit analyzes a current value generated by the device through a Labview software interface, compares the collected current value with a set current threshold value, and triggers and lights bulbs with different colors on the software interface when the current value is in the range of different current threshold values;
further, the self-driven detection ultraviolet light detector is constructed by the following method:
s11: ultrasonically cleaning a conductive glass FTO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the conductive glass FTO substrate by using nitrogen for later use;
s12, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 150W and 75W respectively in a magnetron sputtering instrument, setting the working pressure to be 1Pa, and sputtering;
s13, tearing off the insulating tape adhered on the substrate, dispensing silver paste on the exposed area of the FTO, and leading out the lead;
s14, point-coating silver paste on the sputtered ITO conductive electrode, leading out a lead, and obtaining the self-driven ultraviolet detector;
further, the construction method of the self-driven wind speed detector comprises the following steps:
s21: adhering a layer of aluminum foil on the non-conducting surface of the same substrate used in the step S12 to be used as an electrode of the wind speed detector;
s22, another glass plate with the same size is taken, and a layer of aluminum foil is stuck on the glass plate to be used as the other electrode of the wind speed detector;
s23, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates as a support body of the device in total, and supporting two glass plates by using the 4 acrylic strips;
s24: fixing one end of a polytetrafluoroethylene sheet at the middle section between the two supported glass plates, respectively leading out wires from the two aluminum sheets, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector;
further, the method for integrating, analyzing and signal distinguishing and visualizing the integrated analysis unit is as follows:
s31, testing the current value of the device under certain ultraviolet light intensity, certain wind speed and both ultraviolet light and wind speed;
s32, setting 3 current thresholds which are respectively marked as I1, I2 and I3 in LabView software; wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I2 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time;
s33: the editing program meets the following requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted;
the invention has the following beneficial effects:
1) the built-in electric field of the heterojunction region can drive the separation of photon-generated carrier hole pairs, thereby realizing self-driven ultraviolet detection;
2) the self-driven wind speed detection function part is based on a contact separation type friction nano generator, and based on that polytetrafluoroethylene and aluminum foil are respectively positioned at two ends of a friction sequence, when air flows, the polytetrafluoroethylene and the aluminum foil are in contact separation to generate current, and when the air flows at different speeds, the generated current values are different;
3) comparing the collected current value with a preset current threshold value, and lighting bulbs with different colors on different software interfaces so as to visually detect ultraviolet light and wind in the environment;
4) the device can automatically drive and detect ultraviolet light and air flow in the environment;
5) the visualization of both ultraviolet light and wind signals can be realized.
Drawings
FIG. 1 is a schematic structural diagram of a self-driven multifunctional detection system constructed according to the present invention;
FIG. 2 is a graph of the periodic response of the present invention to ultraviolet light (365 nm);
FIG. 3 is the response current of the present invention at different wind speeds;
fig. 4 is a diagram of external conditions corresponding to the visual signal lamp of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
The invention is further described with reference to the following figures and specific examples, which are not intended to be limiting. The following are preferred examples of the present invention:
as shown in fig. 1-4, the present invention provides a self-driven ultraviolet light and wind speed sensing integrated system, wherein two self-driven devices, namely a self-driven ultraviolet light detector and a wind speed detector, are simultaneously prepared on the same substrate, and are integrated into a whole to construct a self-driven multifunctional detection device, and the current value generated by the device is analyzed through a Labview software interface, so as to complete ultraviolet light detection and wind speed detection, the system comprises a self-driven detection ultraviolet light detector, a self-driven wind speed detector and an integrated analysis unit, and the self-driven detection ultraviolet light detector and the self-driven wind speed detector are both connected with the integrated analysis unit;
a self-driven detection ultraviolet light detector capable of self-driven detection of ultraviolet light signals;
the self-driven wind speed detector can self-drive to detect a wind signal;
and the integrated analysis unit integrates and analyzes the signals acquired by the self-driven detection ultraviolet detector and the self-driven wind speed detector and performs signal distinguishing visualization.
The self-driven ultraviolet detection function part in the self-driven detection ultraviolet detector is a heterojunction formed on the basis of a zinc oxide film and a nickel oxide film, and an electric field built in the heterojunction region drives a photon-generated carrier hole pair to be separated, so that self-driven ultraviolet detection is realized.
The self-driven wind signal detection function in the self-driven wind speed detector is based on a contact separation type friction nano generator, polytetrafluoroethylene and aluminum foil are respectively arranged at two ends of a friction sequence and are in contact separation to generate current when air flows, and the generated current values are different when the air flows at different speeds, so that the wind speed is measured.
The integrated analysis unit analyzes the current value generated by the device through a Labview software interface, compares the collected current value with a set current threshold value, and triggers and lights bulbs with different colors on the software interface when the current value is in the range of different current threshold values.
The self-driven detection ultraviolet light detector is constructed as follows:
s11: ultrasonically cleaning a conductive glass FTO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the conductive glass FTO substrate by using nitrogen for later use;
s12, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 150W and 75W respectively in a magnetron sputtering instrument, setting the working pressure to be 1Pa, and sputtering;
s13, tearing off the insulating tape adhered on the substrate, dispensing silver paste on the exposed area of the FTO, and leading out the lead;
and S14, point-coating silver paste on the sputtered ITO conductive electrode, and leading out a lead to obtain the self-driven ultraviolet detector.
The construction method of the self-driven wind speed detector comprises the following steps:
s21: adhering a layer of aluminum foil on the non-conducting surface of the same substrate used in the step S12 to be used as an electrode of the wind speed detector;
s22, another glass plate with the same size is taken, and a layer of aluminum foil is stuck on the glass plate to be used as the other electrode of the wind speed detector;
s23, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates as a support body of the device in total, and supporting two glass plates by using the 4 acrylic strips;
s24: and fixing one end of a polytetrafluoroethylene sheet at the middle section between the two supported glass plates, respectively leading out wires from the two aluminum sheets, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector.
The method for integrating, analyzing and distinguishing and visualizing the signals of the integrated analysis unit comprises the following steps:
s31, testing the current value of the device under certain ultraviolet light intensity, certain wind speed and both ultraviolet light and wind speed;
s32, setting 3 current thresholds which are respectively marked as I1, I2 and I3 in LabView software; wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I2 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time;
s33: the editor program meets the requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted.
Example 1
(1) Construction of the self-driven ultraviolet light detector: a, ultrasonically cleaning a conductive glass FTO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the substrate by using nitrogen for later use; b, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 150W and 75W respectively in a magnetron sputtering instrument, and setting the working pressure to be 1Pa for sputtering; tearing off the insulating tape adhered to the substrate, dispensing silver paste on the exposed area of the FTO, and leading out a lead; and d, point-coating silver paste on the sputtered ITO conductive electrode, and leading out a lead to obtain the self-driven ultraviolet detector.
(2) Construction of the self-driven wind speed detector: a. sticking a layer of aluminum foil on the non-conducting surface of the same substrate used in the step (1) as an electrode of the wind speed detector; b, another glass plate with the same size is taken, and a layer of aluminum foil is adhered on the glass plate and used as the other electrode of the wind speed detector; c, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates in total as a support body of the device, and supporting two glass plates by using the 4 acrylic strips with certain sizes; d, fixing one end of a polytetrafluoroethylene sheet at the middle section between the two supported glass plates, respectively leading out wires from the two aluminum sheets, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector.
(3) Designing and applying a visual interface: firstly, testing the current value of a device under certain ultraviolet light intensity, the current value under certain wind speed and the current value when both ultraviolet light and wind speed exist; set 3 current thresholds in LabView software, denoted I1, I2, I3 respectively. Wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I2 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time; c, the editing program makes the requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted.
Example 2:
(1) construction of the self-driven ultraviolet light detector: a, ultrasonically cleaning a conductive glass ITO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the conductive glass ITO substrate by using nitrogen for later use; b, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 120W and 75W respectively in a magnetron sputtering instrument, and setting the working pressure to be 1Pa for sputtering; tearing off the insulating tape adhered to the substrate, dispensing silver paste on the exposed area of the FTO, and leading out a lead; and d, point-coating silver paste on the sputtered ITO conductive electrode, and leading out a lead to obtain the self-driven ultraviolet detector.
(2) Construction of the self-driven wind speed detector: a, pasting a layer of copper foil on the non-conducting surface of the same substrate used in the step (1) to be used as an electrode of a wind speed detector; b, another glass plate with the same size is taken, and a layer of copper foil is adhered on the glass plate and used as the other electrode of the wind speed detector; c, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates in total as a support body of the device, and supporting two glass plates by using the 4 acrylic strips with certain sizes; d, fixing one end of the polyethyleneimine at the middle section between the two supported glass plates, respectively leading out wires from the two aluminum sheets, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector.
(3) Designing and applying a visual interface: firstly, testing the current value of the ultraviolet light intensity of the device under another light intensity, the current value under another wind speed and the current values when both the ultraviolet light and the wind speed exist; set 3 current thresholds in LabView software, denoted I1, I2, I3 respectively. Wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I2 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time; c, the editing program makes the requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted.
Example 3:
(1) construction of the self-driven ultraviolet light detector: a, ultrasonically cleaning a conductive glass ITO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the conductive glass ITO substrate by using nitrogen for later use; b, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 120W and 75W respectively in a magnetron sputtering instrument, and setting the working pressure to be 1Pa for sputtering; tearing off the insulating tape adhered to the substrate, dispensing gold paste on the exposed area of the FTO, and leading out a lead; and d, dotting gold paste on the sputtered ITO conductive electrode, and leading out a lead to obtain the self-driven ultraviolet detector.
(2) Construction of the self-driven wind speed detector: a, pasting a layer of copper foil on the non-conducting surface of the same substrate used in the step (1) to be used as an electrode of a wind speed detector; b, another glass plate with the same size is taken, and a layer of copper foil is adhered on the glass plate and used as the other electrode of the wind speed detector; c, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates in total as a support body of the device, and supporting two glass plates by using the 4 acrylic strips with certain sizes; d, fixing one end of the polyethyleneimine at the middle section between the two supported glass plates, respectively leading out wires from the two aluminum sheets, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector.
(3) Designing and applying a visual interface: firstly, testing the current value of the ultraviolet light intensity of the device under another light intensity, the current value under another wind speed and the current values when both the ultraviolet light and the wind speed exist; set 3 current thresholds in LabView software, denoted I1, I2, I3 respectively. Wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I2 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time; c, the editing program makes the requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted.
The above-described embodiment is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (4)
1. A self-driven ultraviolet light and wind speed sensing integrated system is characterized in that two self-driven devices are simultaneously prepared on the same substrate, namely a self-driven detection ultraviolet light detector and a wind speed detector, and are integrated into a whole to form a self-driven multifunctional detection device, and the current value generated by the devices is analyzed through a Labview software interface, so that ultraviolet light detection and wind speed detection are completed;
a self-driven detection ultraviolet light detector capable of self-driven detection of ultraviolet light signals;
the self-driven wind speed detector can self-drive to detect a wind signal;
the integrated analysis unit integrates and analyzes signals collected by the self-driven detection ultraviolet light detector and the self-driven wind speed detector and performs signal distinguishing visualization;
the self-driven detection ultraviolet light detector is constructed as follows:
s11: ultrasonically cleaning a conductive glass FTO substrate in acetone, ethanol and deionized water for 10 minutes in sequence, and drying the conductive glass FTO substrate by using nitrogen for later use;
s12, shielding a part of the conductive surface of the substrate, arranging sputtering zinc oxide, nickel oxide and ITO sputtering power of 80W, 150W and 75W respectively in a magnetron sputtering instrument, setting the working pressure to be 1Pa, and sputtering;
s13, tearing off the insulating tape adhered on the substrate, dispensing silver paste on the exposed area of the FTO, and leading out the lead;
s14, point-coating silver paste on the sputtered ITO conductive electrode, leading out a lead, and obtaining the self-driven ultraviolet detector;
the construction method of the self-driven wind speed detector comprises the following steps:
s21: adhering a layer of aluminum foil on the non-conducting surface of the same substrate used in the step S12 to be used as an electrode of the wind speed detector;
s22, taking another glass plate with the same size as the substrate, and sticking a layer of aluminum foil on the glass plate as the other electrode of the wind speed detector;
s23, cutting out acrylic plates with the size of 0.5cm multiplied by 8cm, taking 4 acrylic plates as the support bodies of the device in total, and supporting two glass plates by the 4 acrylic plates;
s24: fixing one end of a polytetrafluoroethylene sheet at the middle section between two supported glass plates with the same size, respectively leading out wires from the two aluminum foils, and connecting the wires to a rectifier bridge to obtain the self-driven wind speed detector;
the method for integrating, analyzing and distinguishing and visualizing the signals of the integrated analysis unit comprises the following steps:
s31, testing the current value of the device under certain ultraviolet light intensity, certain wind speed and both ultraviolet light and wind speed;
s32, setting 3 current thresholds which are respectively marked as I1, I2 and I3 in LabView software; wherein I1 is the current value of only ultraviolet light, I2 is the current value of only wind acting on the device, I3 is the current value of the device when ultraviolet light with certain wind speed and certain light intensity acts on the device at the same time;
s33: the editor program meets the requirements that when the current is less than I1, the red bulb is lighted, when the current value is between I1 and I2, the green bulb is lighted, and when the current value is greater than I3, the blue bulb is lighted.
2. The system of claim 1, wherein the self-driven ultraviolet light detection function of the self-driven ultraviolet light detection detector is based on a heterojunction formed by a zinc oxide film and a nickel oxide film, and an electric field built in the heterojunction region drives a photogenerated carrier hole pair to separate, thereby realizing self-driven ultraviolet light detection.
3. The system of claim 1, wherein the self-driven wind speed detector is based on a contact separation type friction nano-generator, in which teflon and aluminum foil are respectively disposed at both ends of a friction sequence, and contact separation of teflon and aluminum foil generates current when air flows, and the current value generated when the air flows at different speeds is different, thereby measuring the wind speed.
4. The system of claim 1, wherein the integrated analysis unit analyzes the current value generated by the device through a Labview software interface, compares the collected current value with a set current threshold value, and triggers and lights bulbs with different colors on the software interface when the current value is in the range of different current threshold values.
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| CN112578189A (en) * | 2019-09-27 | 2021-03-30 | 中国科学院物理研究所 | Self-driven photoelectric detection system |
| CN110729916B (en) * | 2019-10-21 | 2021-06-08 | 北京纳米能源与***研究所 | Friction nano generator, self-driven strain sensor and application thereof |
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