A sensor device of three-dimensional zinc oxide hybrid structure and a method of operating the same

Abstract

The application is suitable for the field of ultraviolet light intensity monitoring and piezoelectric signal monitoring technology improvement, and provides a sensor device based on three-dimensional zinc oxide hybrid structure functional material, which comprises a sensing unit, an input end of a sampling unit connected with an output end of the sensing unit, an input end of a main control unit connected with an output end of the sampling unit, an input end of a display unit connected with an output end of the main control unit, an input end of the main control unit connected with an output end of an interactive unit, a power supply unit electrically connected with the main control unit and the sensing unit respectively, and the main control unit controls whether the power supply unit supplies power to the sensing unit according to user-set transmission data type; if the transmission data is ultraviolet light intensity, the power supply unit supplies power to the sensing unit, and if the transmission data is a piezoelectric signal, power supply is not needed; if both signals need to be collected, the signals are collected in a certain time proportion polling mode and then transmitted to the main control unit. The device has the dual functions of detecting ultraviolet light of different light intensity and detecting piezoelectric signals caused by mechanical movement and shows excellent performance.

Description

Technical Field

[0001] This invention belongs to the field of ultraviolet light intensity monitoring and piezoelectric signal monitoring technology improvement, and particularly relates to a three-dimensional zinc oxide hybrid structure functional material sensor device and its operation method. Background Technology

[0002] In recent years, flexible wearable sensors have developed rapidly and have been widely used in fields such as electronic skin, physiological information collection, human-computer interaction, and energy storage. Among them, flexible pressure sensors play a very important role in human health monitoring and artificial intelligence, and continue to be a hot research topic. However, single functions can no longer meet people's growing needs. Therefore, flexible wearable pressure sensors with other signal detection functions are more in line with the needs of social development.

[0003] Current research indicates that zinc oxide (ZnO) is widely used in pressure sensing, temperature sensing, ultraviolet detection, and gas sensing due to its semiconductor properties, photoelectric and piezoelectric characteristics. Further research shows that sensors with three-dimensional zinc oxide hybrid structures possess extremely high ultraviolet detection sensitivity, while triboelectric nanogenerator pressure sensors based on this structure exhibit excellent pressure signal monitoring capabilities, significantly reducing sensor and application costs. Although zinc oxide sensors have been extensively researched and manufactured, flexible wearable sensor devices that combine extremely high ultraviolet detection sensitivity with pressure signal monitoring functionality based on a single sensor are still lacking. Summary of the Invention

[0004] The purpose of this invention is to provide a three-dimensional zinc oxide hybrid structure functional material sensor device and its operation method, aiming to solve the technical problem of lacking a flexible wearable sensor device with a single sensor that can simultaneously detect ultraviolet light and monitor pressure signals.

[0005] This invention is implemented as follows: a three-dimensional zinc oxide hybrid structure functional material sensor device, comprising a sensing unit, a sampling unit, a main control unit, an interaction unit, a display unit, and a power supply unit. The output of the sensing unit is connected to the input of the sampling unit, the output of the sampling unit is connected to the input of the main control unit, the output of the main control unit is connected to the input of the display unit, and the output of the interaction unit is connected to the input of the main control unit. The power supply unit is electrically connected to both the main control unit and the sensing unit. The main control unit controls whether the power supply unit supplies power to the sensing unit according to the user-set data type of transmission. If the transmitted data is ultraviolet light intensity, the power supply unit supplies power to the sensing unit; if the transmitted data is a piezoelectric signal, no power supply is required. If both signals need to be collected, the signals are collected in a polling manner according to a certain time ratio and then transmitted to the main control unit.

[0006] A further technical solution of the present invention is as follows: the main control unit includes a chip U1, a resistor R4, a capacitor C1, a resistor R2, a capacitor C5, a capacitor C3, a resistor R3, a capacitor C6, a capacitor C7, and a crystal oscillator X1. The fifth pin of the chip U1 is connected to one end of the crystal oscillator X1 and one end of the capacitor C6. The seventh pin of the chip U1 is connected to one end of the capacitor C1 and one end of the resistor R2. The ninth pin of the chip U1 is connected to one end of the capacitor C3, one end of the capacitor C5, and one end of the resistor R3. The fourth and fourth pins of the chip U1 are grounded through the resistor R4.

[0007] A further technical solution of the present invention is as follows: the sampling unit includes an ultraviolet light intensity sensor sampling circuit and a piezoelectric sensor sampling circuit. The ultraviolet light intensity sensor sampling circuit includes a diode D2, a resistor R15, a capacitor C18, a sliding rheostat R21, a resistor R13, a resistor R14, a Zener diode D3, and an operational amplifier U5. Pin 11 of the chip U1 is connected to one end of the resistor R15, one end of the capacitor C18, and the anode of the diode D2. The other end of the resistor R15 is connected to pin 1 of the operational amplifier U5, one end of the sliding rheostat R21, and the sliding end. The other end of the sliding rheostat R21 is connected to one end of the resistor R13 and pin 4 of the operational amplifier U5. Pin 3 of the operational amplifier U5 is connected to one end of the resistor R14 and the cathode of the Zener diode D3. The other end of the resistor R14 is connected to pin 13 of the chip U1.

[0008] A further technical solution of the present invention is as follows: the piezoelectric sensor sampling circuit includes a resistor R5, MOSFETs Q1, Q2, and Q3, resistors R8, R9, R6, and R7, and a sampling and voltage divider resistor U3. One end of resistor R5 is connected to pin 18 of chip U1, one end of resistor R8 is connected to pin 20 of chip U1, one end of resistor R9 is connected to pin 19 of chip U1, the source of MOSFET Q3 is connected to pin 12 of chip U1, and the source of MOSFET Q2... Connect pin 13 of chip U1. The gate of MOSFET Q2 is connected to the other end of resistor R8. The drain of MOSFET Q2 is connected to one end of sampling and voltage divider resistor U3 and one end of resistor R7. The other end of resistor R7 is connected to one end of resistor R6 and the drain of MOSFET Q3. The gate of MOSFET Q3 is connected to the other end of resistor R9. The other end of sampling and voltage divider resistor U3 is connected to the source of MOSFET Q1. The gate of MOSFET Q1 is connected to the other end of resistor R5.

[0009] A further technical solution of the present invention is as follows: the display unit includes a terminal block H1, a display LED1, capacitors C15 and C17, resistors R23, R21, and R20, a diode D1, resistor R22, capacitors C18, C16, C13, and C14. The second pin of the terminal block H1 is connected to one end of resistor R20 and the 10th pin of the display LED1. The third pin of the terminal block H1 is connected to one end of resistor R21 and the 11th pin of the display LED1. The 14th pin of the display LED1 is grounded through capacitor C15. Pin 13 connects to capacitor C17 for grounding. Pin 12 of LED1 is grounded via resistor R23. Pin 9 of LED1 is connected to the anode of diode D1, one end of resistor R22, and one end of capacitor C18. Pin 8 of LED1 is grounded via capacitor C16. Pin 4 of LED1 is connected to one end of capacitor C14. The other end of capacitor C14 is connected to pin 3 of LED1. Pin 2 of LED1 is connected to one end of capacitor C13. The other end of capacitor C13 is connected to pin 1 of LED1.

[0010] A further technical solution of the present invention is as follows: the interactive unit includes a push switch SW3, a push switch SW2, a push switch SW1, a capacitor C16, a resistor R11, a capacitor C17, a resistor R12, a capacitor C20, and a resistor R20. The fourth pin of the push switch SW3 is connected to one end of the resistor R11, one end of the capacitor C16, and the fourth pin of the chip U1. The fourth pin of the push switch SW2 is connected to one end of the resistor R12, one end of the capacitor C17, and the fourth pin of the chip U1. The fourth pin of the push switch SW1 is connected to one end of the resistor R20, one end of the capacitor C20, and the fourth pin of the chip U1.

[0011] A further technical solution of the present invention is: the sensing power supply includes an ultraviolet light intensity sensor and a piezoelectric sensor, the output terminal of the ultraviolet light intensity sensor is connected to the input terminal of the ultraviolet light intensity sensor sampling circuit, and the output terminal of the piezoelectric sensor is connected to the input terminal of the piezoelectric sensor sampling circuit.

[0012] A further technical solution of the present invention is: the power supply unit includes a switching power supply, an LDO buck circuit and a BOOST boost circuit, the output terminal of the switching power supply is connected to the input terminal of the LDO buck circuit, and the output terminal of the LDO buck circuit is connected to the input terminal of the BOOST boost circuit.

[0013] A further technical solution of the present invention is as follows: the LDO step-down circuit includes a chip U2, a capacitor C4 and a capacitor C2, pin 2 of the chip U2 is connected to one end of the capacitor C4, and pin 3 of the chip U2 is connected to one end of the capacitor C2; the BOOST step-up circuit includes a chip U4, a capacitor C9, an inductor L1 and a capacitor C8, pin 2 of the chip U4 is connected to one end of the inductor L1, the other end of the inductor L1 is connected to the positive terminal of the capacitor C8, and pin 3 of the chip U4 is connected to the positive terminal of the capacitor C9.

[0014] Another object of the present invention is to provide an operating method for a sensor device based on a three-dimensional zinc oxide hybrid structure functional material, the operating method of which includes the following steps:

[0015] S1. Wear the flexible sensor onto the corresponding part that needs to be detected;

[0016] S2. Select the required detection and output signals according to the requirements of the interactive unit;

[0017] S3. The sensing unit acquires ultraviolet light intensity signals or piezoelectric signals and performs amplification and filtering processing.

[0018] S4. The processed signal is transmitted to the main control unit for corresponding signal fitting processing and then output to the display unit for display, so that the user can obtain the current ambient ultraviolet light intensity and piezoelectric signal.

[0019] The advantages of this invention are: it possesses the dual function of detecting ultraviolet light of different intensities and monitoring electrical signals caused by mechanical motion. Furthermore, its low cost, simple implementation, and sophisticated user interface make it a promising candidate for applications in wearable photoelectric detectors and pressure sensors. Attached Figure Description

[0020] Figure 1 This is a structural block diagram of the three-dimensional zinc oxide hybrid structure sensor device provided in the embodiments of the present invention.

[0021] Figure 2 This is an electrical schematic diagram of the LDO step-down circuit and the BOOST step-up circuit in the power supply unit provided in the embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the sensor device for the three-dimensional zinc oxide hybrid structure functional material provided in this embodiment of the invention.

[0023] Figure 4 This is the time-current curve of the ultraviolet detector constructed with the three-dimensional zinc oxide hybrid structure provided in the embodiments of the present invention.

[0024] Figure 5 These are the ultraviolet light sensitivities of different sensors provided in the embodiments of the present invention, wherein the sensor with a sensitivity of 4029 is the sensor of the present invention.

[0025] Figure 6 This invention relates to a pressure sensor constructed with a three-dimensional zinc oxide hybrid structure for signal monitoring under different pressures.

[0026] Figure 7 This is an electrical schematic diagram of an OLED display unit driven by a 4-pin IIC communication protocol of a sensor device with a three-dimensional zinc oxide hybrid structure provided in an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the sampling circuit of the ultraviolet light intensity sensor of the sensor device with a three-dimensional zinc oxide hybrid structure provided in the embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the piezoelectric sensor sampling circuit of the sensor device with a three-dimensional zinc oxide hybrid structure provided in an embodiment of the present invention.

[0029] Figure 10 This is a circuit diagram of the interaction unit of the sensor device with a three-dimensional zinc oxide hybrid structure provided in an embodiment of the present invention.

[0030] Figure 11 This is a circuit diagram of the main control unit of the sensor device with a three-dimensional zinc oxide hybrid structure provided in an embodiment of the present invention. Detailed Implementation

[0031] To address the shortcomings and deficiencies of the existing technologies, this invention provides a device with a single sensor possessing extremely high ultraviolet detection sensitivity, reaching 4000 ohms at a relatively low voltage, while also capable of detecting piezoelectric signals. This device features human-computer interaction, allowing users to freely select the sensor's operating mode and providing real-time data display to the user.

[0032] like Figure 1-11As shown, the sensor device with a three-dimensional zinc oxide hybrid structure provided by the present invention includes a sensing unit, a sampling unit, a main control unit, an interaction unit, a display unit, and a power supply unit. The output terminal of the sensing unit is connected to the input terminal of the sampling unit, the output terminal of the sampling unit is connected to the input terminal of the main control unit, the output terminal of the main control unit is connected to the input terminal of the display unit, and the output terminal of the interaction unit is connected to the input terminal of the main control unit. The power supply unit is electrically connected to both the main control unit and the sensing unit. The main control unit controls whether the power supply unit supplies power to the sensing unit according to the data type set by the user. If the transmitted data is ultraviolet light intensity, the power supply unit supplies power to the sensing unit; if the transmitted data is a piezoelectric signal, no power supply is required; if both signals need to be collected, the signals are collected in a polling manner according to a certain time ratio and then transmitted to the main control unit.

[0033] First, the power supply unit provides power to the main control system through linear voltage regulation. The user selects the signal to be collected through the interaction unit. After amplification or voltage division, the signal is transmitted to the main control unit. The main control unit outputs the corresponding sensor data to the display unit according to the user's selection and the communication protocol.

[0034] The voltage divider resistor of the pressure sensor acquisition system: RPress = (VUVSensor / ILightmax) / (VPressSensor * 3 / VMcu)

[0035] The sampling unit's resistor and voltage divider resistor are shared: Ruv = RPress

[0036] The operational amplifier's gain should be: 0.5 * Vmcu * VpressSensor / ((VUVSensor / ILightMax) + RPress))

[0037] Sensing Unit: A flexible sensor with a three-dimensional zinc oxide hybrid structure, capable of both pressure detection and sensing / absorbing ultraviolet light intensity. Power Supply Unit: Includes a power supply, a main chip power supply, and a sensor power supply. Sampling Unit: Filters and amplifies the sensor signal, then transmits the amplified and filtered signal to the main control system. Display Unit: Displays the sensor data on an interface; this invention utilizes an OLED display controlled by IIC communication. Interaction Unit: Can select between outputting ultraviolet signals, piezoelectric signals, or both. Main Control Unit: Responsible for signal collection and output. It possesses extremely high ultraviolet light sensing sensitivity and can also detect piezoelectric signals caused by motion. Its low cost, simple implementation, and comprehensive interactive interface make it a promising candidate for applications in wearable photodetectors and pressure sensors.

[0038] The main control unit includes a chip U1, a resistor R4, a capacitor C1, a resistor R2, a capacitor C5, a capacitor C3, a resistor R3, a capacitor C6, a capacitor C7, and a crystal oscillator X1. Pin 5 of the chip U1 is connected to one end of the crystal oscillator X1 and one end of the capacitor C6. Pin 7 of the chip U1 is connected to one end of the capacitor C1 and one end of the resistor R2. Pin 9 of the chip U1 is connected to one end of the capacitor C3, one end of the capacitor C5, and one end of the resistor R3. Pin 44 of the chip U1 is grounded through the resistor R4.

[0039] Main control unit: First, the microprocessor receives the acquisition mode selected by the interactive system. The main control system controls the power supply of the sensor by controlling the MOSFET, and simultaneously acquires the corresponding ultraviolet light intensity or piezoelectric signal. The chip used according to the claims is: STM32F103C8T6.

[0040] The sampling unit includes an ultraviolet light intensity sensor sampling circuit and a piezoelectric sensor sampling circuit. The ultraviolet light intensity sensor sampling circuit includes a diode D2, a resistor R15, a capacitor C18, a sliding rheostat R21, a resistor R13, a resistor R14, a Zener diode D3, and an operational amplifier U5. Pin 11 of the chip U1 is connected to one end of the resistor R15, one end of the capacitor C18, and the anode of the diode D2. The other end of the resistor R15 is connected to pin 1 of the operational amplifier U5, one end of the sliding rheostat R21, and its sliding end. The other end of the sliding rheostat R21 is connected to one end of the resistor R13 and pin 4 of the operational amplifier U5. Pin 3 of the operational amplifier U5 is connected to one end of the resistor R14 and the cathode of the Zener diode D3. The other end of the resistor R14 is connected to pin 13 of the chip U1.

[0041] Ultraviolet (UV) light intensity sensor and its detection system: When exposed to UV light, the internal resistance decreases, activating the constant voltage source and generating a current corresponding to the light intensity. This current is converted into a voltage signal by a sampling resistor. When there is no light but a constant voltage source is present, the generated dark current is extremely small, and the corresponding sampling circuit is also minimal. The acquired sampling signal is amplified by an operational amplifier and filtered by a filter capacitor to obtain the UV light intensity signal. The operational amplifier chip used is the GS8331-TR.

[0042] The piezoelectric sensor sampling circuit includes resistor R5, MOSFETs Q1, Q2, and Q3, resistors R8, R9, R6, and R7, and a sampling and voltage divider resistor U3. One end of resistor R5 is connected to pin 18 of chip U1, one end of resistor R8 is connected to pin 20 of chip U1, one end of resistor R9 is connected to pin 19 of chip U1, the source of MOSFET Q3 is connected to pin 12 of chip U1, and the source of MOSFET Q2 is connected to pin 12 of chip U1. Pin 13 of U1 is connected to the gate of MOSFET Q2 and the other end of resistor R8. The drain of MOSFET Q2 is connected to one end of sampling and voltage divider resistor U3 and one end of resistor R7. The other end of resistor R7 is connected to one end of resistor R6 and the drain of MOSFET Q3. The gate of MOSFET Q3 is connected to the other end of resistor R9. The other end of sampling and voltage divider resistor U3 is connected to the source of MOSFET Q1. The gate of MOSFET Q1 is connected to the other end of resistor R5.

[0043] Piezoelectric signal sensor and its detection system: The power supply to the sensor is turned off by a MOSFET. When a pressure signal is generated, the sensor produces a voltage. After voltage division by resistors, the voltage signal is transmitted to the microcontroller. The MOSFET used is AO3400A.

[0044] The display unit includes a terminal block H1, a display LED1, capacitors C15 and C17, resistors R23, R21, and R20, a diode D1, resistor R22, capacitors C18, C16, C13, and C14. Pin 2 of terminal block H1 is connected to one end of resistor R20 and pin 10 of display LED1. Pin 3 of terminal block H1 is connected to one end of resistor R21 and pin 11 of display LED1. Pin 14 of display LED1 is grounded via capacitor C15. Pin 13 of display LED1... The capacitor C17 is grounded. The 12th pin of the LED1 of the display screen is grounded through the resistor R23. The 9th pin of the LED1 of the display screen is connected to the anode of the diode D1, one end of the resistor R22, and one end of the capacitor C18. The 8th pin of the LED1 of the display screen is grounded through the capacitor C16. The 4th pin of the LED1 of the display screen is connected to one end of the capacitor C14. The other end of the capacitor C14 is connected to the 3rd pin of the LED1 of the display screen. The 2nd pin of the LED1 of the display screen is connected to one end of the capacitor C13. The other end of the capacitor C13 is connected to the 1st pin of the LED1 of the display screen.

[0045] Display Unit: Provides the OLED and its display circuitry, processing the voltage signals generated by the main control circuitry and providing feedback to the user. The OLED module used in the claims is: N096-2864TMBEG0-H30, and the driver chip used in the OLED is: SSD1306.

[0046] The interactive unit includes push switches SW3, SW2, and SW1, capacitor C16, resistors R11, C17, R12, C20, and R20. The fourth pin of push switch SW3 is connected to one end of resistor R11, one end of capacitor C16, and the fourth pin of chip U1. The fourth pin of push switch SW2 is connected to one end of resistor R12, one end of capacitor C17, and the fourth pin of chip U1. The fourth pin of push switch SW1 is connected to one end of resistor R20, one end of capacitor C20, and the fourth pin of chip U1.

[0047] The interactive unit selects the signals to be transmitted and output via a button circuit. When a button is pressed, the signal acquisition mode is switched.

[0048] The sensing power supply includes an ultraviolet light intensity sensor and a piezoelectric sensor. The output terminal of the ultraviolet light intensity sensor is connected to the input terminal of the ultraviolet light intensity sensor sampling circuit, and the output terminal of the piezoelectric sensor is connected to the input terminal of the piezoelectric sensor sampling circuit.

[0049] The power supply unit includes a switching power supply, an LDO buck circuit, and a BOOST boost circuit. The output terminal of the switching power supply is connected to the input terminal of the LDO buck circuit, and the output terminal of the LDO buck circuit is connected to the input terminal of the BOOST boost circuit.

[0050] The LDO step-down circuit includes chip U2, capacitor C4, and capacitor C2. Pin 2 of chip U2 is connected to one end of capacitor C4, and pin 3 of chip U2 is connected to one end of capacitor C2. The BOOST step-up circuit includes chip U4, capacitor C9, inductor L1, and capacitor C8. Pin 2 of chip U4 is connected to one end of inductor L1, and the other end of inductor L1 is connected to the positive terminal of capacitor C8. Pin 3 of chip U4 is connected to the positive terminal of capacitor C9.

[0051] Power Supply Unit: The power supply needs to be regulated by an LDO linear buck converter to provide power to the main control system. Additionally, when the sensor needs to detect ultraviolet light intensity, it needs to be boosted by a BOOST converter to provide the power required by the ultraviolet light intensity sensor and its detection system. The LDO chip used in the claims is HT7533-1; the BOOST converter chip used in the claims is ME2188A50XG.

[0052] A schematic diagram of a sensor device with a three-dimensional zinc oxide hybrid structure is attached. Figure 1 As shown, it mainly consists of the following parts: a sensing unit, a power supply unit, a sampling unit, a main control unit, an interaction unit, and a display unit. The user selects the content to be output through the interaction unit, which then transmits the selected content to the main control unit. On the other hand, after the user confirms the data to be transmitted, if the transmitted data is ultraviolet light intensity data, power needs to be supplied to the sensor. The signal is then transmitted to the main control unit via the operational amplifier circuit of the sampling system. If the transmitted data is a piezoelectric signal, no power supply to the sensor is required; the signal is transmitted to the main control system via the voltage divider circuit of the sampling system. If the user needs to collect both signals, the signals are collected through the sampling system in a polling manner according to a certain time slice ratio. The signals are then transmitted to the main control unit, which uses the IIC protocol to fit the corresponding data and transmits it to the display unit. The power supply unit provides power to the main control unit and the sensor when they are operating in ultraviolet light intensity signal detection mode.

[0053] The power supply unit circuit diagram for this implementation example is as follows: Figure 2 As shown, the left end is an LDO linear regulator circuit, and the right end is a BOOST boost circuit. Vin in the diagram is the external power supply, and capacitor C4 is a filter capacitor. After being stepped down by the LDO circuit, a stable 3.3V power supply is obtained to power the main control unit. The LDO chip is HT7533-1, which has a maximum input voltage of over 20V and high power supply tolerance. The 3.3V is boosted to 5V by the BOOST boost circuit to power the sensor operating in ultraviolet light intensity detection mode. The BOOST boost chip is ME2188A50XG.

[0054] The sensor in this implementation example is... Figure 3 As shown, the sensor consists of a PET film with interdigitated electrodes, a three-dimensional zinc oxide layer, and a PDMS encapsulation layer.

[0055] The time-current curve of the ultraviolet detector in this embodiment is as follows: Figure 4 As shown, the waveform remains unchanged during continuous triggering, indicating stable performance.

[0056] The detection sensitivity of the ultraviolet light intensity signal of the sensor in this embodiment is as follows: Figure 5 As shown, the sensor used in this example has an extremely high sensitivity of 4029.

[0057] In this implementation example, the pressure monitoring signal of the sensor is as follows: Figure 6 As shown, this sensor can monitor different pressure levels by outputting different signals.

[0058] This implementation example shows the system circuit diagram as follows: Figure 7 As shown, the left image is the 4-pin interface of the OLED module, and the right image is the OLED circuit. This example uses IIC communication to control and drive the OLED display. The OLED display control chip is SSD1306.

[0059] The operational amplifier circuit diagram of the sampling system in this implementation example is shown below. Figure 8 As shown, the amplification factor is adjustable up to 2000 times. D3 is a 3.3V Zener diode, protecting the operational amplifier from damage when acquiring piezoelectric signals. R21 is an adjustable resistor, allowing selection of the desired amplification factor. The operational amplifier chip is GS8331-TR.

[0060] The circuit diagram of the sampling unit voltage divider and sampling resistor in this implementation example is shown below. Figure 9 As shown, the sampling and voltage divider resistor is 20 KΩ, and MOSFET Q1 is a field-effect transistor that determines whether to provide power to the sensor; its model is AO3400A.

[0061] The operational amplifier circuit diagram of the interactive system in this implementation example is as follows: Figure 10 As shown, the user selects the corresponding input channel via buttons and transmits it to the main control unit.

[0062] The operational amplifier circuit diagram of the main control unit in this implementation example is as follows: Figure 11 As shown, the main control unit is responsible for collecting user data and sampled data, and then displaying it on the OLED screen via the IIC protocol. The main chip is an STM32F103C8T6, and X1 is an 8 MHz external system clock, which can be multiplied to a maximum of 72 MHz.

[0063] Another objective of this invention is to provide an operating method for a sensor device based on a three-dimensional zinc oxide hybrid structure functional material. The operating method of the sensor device with the three-dimensional zinc oxide hybrid structure includes the following steps: S1, wearing a flexible sensor on the corresponding part that needs to be detected; S2, selecting the signal to be detected and output according to the requirements of the interactive unit; S3, the sensing unit acquires the ultraviolet light intensity signal or the piezoelectric signal and performs amplification and filtering processing; S4, the processed signal is transmitted to the main control unit for corresponding signal fitting processing and then output to the display unit for display, so that the user can obtain the current ambient ultraviolet light intensity and piezoelectric signal.

[0064] First, the user wears the flexible sensor on the area to be detected. Then, the user controls the interactive system to select the signal to be detected and output. The sensor system acquires the corresponding ultraviolet light intensity and piezoelectric signal, and filters and amplifies them. The obtained signal is then transmitted to the main control system, which fits the corresponding signal and outputs it to the display system. The user can then obtain the relevant current ambient ultraviolet light intensity and piezoelectric signal. The power supply system provides power to the entire device. This application possesses both extremely high ultraviolet light sensing sensitivity and the ability to detect piezoelectric signals caused by motion. Furthermore, its low cost, simple implementation, and comprehensive interactive interface make it a promising candidate for application in wearable photodetectors and pressure sensors.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-dimensional zinc oxide hybrid structure functional material sensor device, characterized by, The sensor device based on the three-dimensional zinc oxide hybrid structure functional material comprises a sensing unit, a sampling unit, a master control unit, an interactive unit, a display unit and a power supply unit, an output end of the sensing unit is connected to an input end of the sampling unit, an output end of the sampling unit is connected to an input end of the master control unit, an output end of the master control unit is connected to an input end of the display unit, an output end of the interactive unit is connected to an input end of the master control unit, the power supply unit is electrically connected to the master control unit and the sensing unit respectively, the master control unit controls whether the power supply unit supplies power to the sensing unit according to user-set data type, if the transmission data is ultraviolet light intensity, the power supply unit supplies power to the sensing unit, if the transmission data is a piezoelectric signal, power supply is not needed, if both signals need to be collected, the signals are collected in a certain time proportion polling mode and then transmitted to the master control unit; The master control unit comprises a chip U1, a resistor R4, a capacitor C1, a resistor R2, a capacitor C5, a capacitor C3, a resistor R3, a capacitor C6, a capacitor C7 and a crystal oscillator X1, a fifth pin of the chip U1 is connected to one end of the crystal oscillator X1 and one end of the capacitor C6 respectively, a seventh pin of the chip U1 is connected to one end of the capacitor C1 and one end of the resistor R2 respectively, a ninth pin of the chip U1 is connected to one end of the capacitor C3, one end of the capacitor C5 and one end of the resistor R3 respectively, a forty-fourth pin of the chip U1 is grounded through the resistor R4; The sampling unit comprises an ultraviolet light intensity sensor sampling circuit and a piezoelectric sensor sampling circuit, the ultraviolet light intensity sensor sampling circuit comprises a diode D2, a resistor R15, a capacitor C18, a slide rheostat R21, a resistor R13, a resistor R14, a stabilizing diode D3 and an operational amplifier U5, an eleventh pin of the chip U1 is connected to one end of the resistor R15, one end of the capacitor C18 and an anode of the diode D2 respectively, the other end of the resistor R15 is connected to a first pin of the operational amplifier U5 and one end and a slide end of the slide rheostat R21 respectively, the other end of the slide rheostat R21 is connected to one end of the resistor R13 and a fourth pin of the operational amplifier U5 respectively, a third pin of the operational amplifier U5 is connected to one end of the resistor R14 and a cathode of the stabilizing diode D3 respectively, the other end of the resistor R14 is connected to a thirteenth pin of the chip U1; The piezoelectric sensor sampling circuit comprises a resistor R5, a MOS tube Q1, a MOS tube Q2, a MOS tube Q3, a resistor R8, a resistor R9, a resistor R6, a resistor R7 and a sampling and voltage dividing resistor U3, one end of the resistor R5 is connected to the 18th pin of the chip U1, one end of the resistor R8 is connected to the 20th pin of the chip U1, one end of the resistor R9 is connected to the 19th pin of the chip U1, the source electrode of the MOS tube Q3 is connected to the 12th pin of the chip U1, the source electrode of the MOS tube Q2 is connected to the 13th pin of the chip U1, the gate electrode of the MOS tube Q2 is connected to the other end of the resistor R8, the drain electrode of the MOS tube Q2 is connected to one end of the sampling and voltage dividing resistor U3 and one end of the resistor R7 respectively, the other end of the resistor R7 is connected to one end of the resistor R6 and the drain electrode of the MOS tube Q3 respectively, the gate electrode of the MOS tube Q3 is connected to the other end of the resistor R9, the other end of the sampling and voltage dividing resistor U3 is connected to the source electrode of the MOS tube Q1, and the gate electrode of the MOS tube Q1 is connected to the other end of the resistor R5. The power supply unit comprises a switching power supply, an LDO voltage reduction circuit and a BOOST voltage increasing circuit, the output end of the switching power supply is connected to the input end of the LDO voltage reduction circuit, and the output end of the LDO voltage reduction circuit is connected to the input end of the BOOST voltage increasing circuit.

2. The three-dimensional zinc oxide hybrid structure functional material sensor device of claim 1, wherein, The display unit comprises a wiring terminal H1, a display screen LED1, a capacitor C15, a capacitor C17, a resistor R23, a resistor R21, a resistor R20, a diode D1, a resistor R22, a capacitor C18, a capacitor C16, a capacitor C13 and a capacitor C14, the 2nd pin of the wiring terminal H1 is connected to one end of the resistor R20 and the 10th pin of the display screen LED1 respectively, the 3rd pin of the wiring terminal H1 is connected to one end of the resistor R21 and the 11th pin of the display screen LED1 respectively, the 14th pin of the display screen LED1 is grounded through the capacitor C15, the 13th pin of the display screen LED1 grounds the capacitor C17, the 12th pin of the display screen LED1 is grounded through the resistor R23, the 9th pin of the display screen LED1 is connected to the anode of the diode D1, one end of the resistor R22 and one end of the capacitor C18 respectively, the 8th pin of the display screen LED1 is grounded through the capacitor C16, the 4th pin of the display screen LED1 is connected to one end of the capacitor C14, the other end of the capacitor C14 is connected to the 3rd pin of the display screen LED1, the 2nd pin of the display screen LED1 is connected to one end of the capacitor C13, and the other end of the capacitor C13 is connected to the 1st pin of the display screen LED1.

3. The three-dimensional zinc oxide hybrid structure functional material sensor device of claim 2, wherein, The interaction unit includes a press switch SW3, a press switch SW2, a press switch SW1, a capacitor C16, a resistor R11, a capacitor C17, a resistor R12, a capacitor C20 and a resistor R20, the fourth pin of the press switch SW3 is connected with one end of the resistor R11, one end of the capacitor C16 and the 43th pin of the chip U1 respectively, the fourth pin of the press switch SW2 is connected with one end of the resistor R12, one end of the capacitor C17 and the 42th pin of the chip U1 respectively, the fourth pin of the press switch SW1 is connected with one end of the resistor R20, one end of the capacitor C20 and the 41th pin of the chip U1 respectively.

4. The three-dimensional zinc oxide hybrid structure functional material sensor device of claim 3, wherein, The sensing power source includes an ultraviolet light intensity sensor and a piezoelectric sensor, the output end of the ultraviolet light intensity sensor is connected with the input end of the ultraviolet light intensity sensor sampling circuit, and the output end of the piezoelectric sensor is connected with the input end of the piezoelectric sensor sampling circuit.

5. The three-dimensional zinc oxide hybrid structure functional material sensor device of claim 4, wherein, The LDO voltage reduction circuit includes a chip U2, a capacitor C4 and a capacitor C2, the second pin of the chip U2 is connected with one end of the capacitor C4, and the third pin of the chip U2 is connected with one end of the capacitor C2; the BOOST voltage increasing circuit includes a chip U4, a capacitor C9, an inductor L1 and a capacitor C8, the second pin of the chip U4 is connected with one end of the inductor L1, the other end of the inductor L1 is connected with the positive pole of the capacitor C8, and the third pin of the chip U4 is connected with the positive pole of the capacitor C9.

6. A method of operating a three-dimensional zinc oxide hybrid structure functional material sensor device according to any one of claims 1-5, characterized in that, The operation method of the three-dimensional zinc oxide hybrid structure functional material sensor device includes the following steps: S1, wearing the flexible sensor to the corresponding part needing detection; S2, operating the interaction unit to select the signal needing detection and output according to the requirement; S3, the sensing unit acquires the ultraviolet light intensity signal or the piezoelectric signal and performs amplification and filtering processing; S4, the processed signal is transmitted to the main control unit for corresponding signal fitting processing and then output to the display unit for display, so that the user obtains the current environmental ultraviolet light intensity and piezoelectric signal.

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