TW201736805A - Self-powered sensing device - Google Patents

Abstract

The invention is related to a self-powered sensing device, which comprises an optical wave guide element, a self-powered battery which comprises at least one photovoltaic, a sensor, an adjusting circuit which is electronically connected in between the self-powered battery and the sensor for providing electricity generated from the self-powered battery to the sensor, and a signal transmission element, which is electronically connected to the sensor; wherein the photovoltaic comprises a light receiving surface and the optical wave guide element guides the light incident on the self-powered sensing device to the light receiving surface of the photovoltaic. The photovoltaic equipped with the optical wave guide element captures indoor weak light nearby the self-powered sensing device and steadily provides the sensor with the required electricity such that the sensor can continuously sense environment while the maintenance fee required for replacing batteries thereof can be reduced.

Description

Self-powered sensing device

The invention relates to a self-powered sensing device, in particular to a self-powered sensing device for instantaneously transmitting sensing information in a room.

Self-powered sensing devices used in indoor applications for detecting environmental information often draw weak indoor light sources or energy sources from photovoltaic cells and other hunting devices to stabilize the power required to provide sensing elements. However, in the case of using a photovoltaic cell, the capture of light energy is limited by the effective power generation area of the photovoltaic cell on the device and the angle of incidence of light. Therefore, the installation of the self-powered sensing device must take into account the angle of incidence of the light source, so that the installation of the device will be limited by the angle of the incident light source, and the diversification of its application is also limited. Accordingly, the amount of power generated by the self-powered battery in the self-powered sensing device known in the art has gradually failed to meet the power required for the increasing sensing demand in various occasions, and further improvement is necessary.

In view of the above, an object of the present invention is to provide a self-powered sensing device, and more particularly to a self-powered sensing device for instantaneously transmitting sensing information in a room. The self-powered sensing device can draw a weak light source or energy source in the room and stably supply the power required by the sensing component, so that the sensing component can continuously sense the environment and transmit information, and reduce the management cost required for replacing the battery.

To achieve the above object, the present invention provides a self-powered sensing device comprising: an optical waveguide component; a self-powered battery comprising at least one photovoltaic cell; a sensing component; and a matching circuit electrically connected to the foregoing a self-powered battery and the sensing component to supply electrical energy generated by the self-powered battery to the sensing component; a signal transmitting component electrically connecting the sensing component; wherein the photovoltaic cell comprises a light receiving surface, and the light The waveguide element directs light incident to the self-powered sensing device to the aforementioned light receiving surface of the photovoltaic cell.

Preferably, the optical waveguide component covers the self-powered battery, the sensing component, the aforementioned matching circuit, the aforementioned signal transmitting component, or a combination thereof.

Preferably, the optical waveguide component defines an internal space, and the self-powered battery, the sensing component, the matching circuit, the signal transmitting component or a combination thereof is disposed in the internal space.

Preferably, the self-powered sensing device further includes a housing, the housing defines an accommodating space, and the accommodating space accommodates the optical waveguide component, the self-powered battery, the sensing component, The modulating circuit and the signal transmitting component; the housing is provided with at least one light incident surface, and the light receiving surface of the photovoltaic cell is substantially perpendicular to the at least one light incident surface.

Preferably, the optical waveguide component comprises a substrate, and the substrate is doped with at least one particle.

Preferably, the material of the substrate is Polymethyl-methacrylate PMMA, Polyvinyl Alcohol (PVA), Polyvinyl Pyrrolidone (PVP), Polydimethyloxane (Polydimethylsiloxane, PDMS), or a combination thereof.

Preferably, the material of the particles is scattering type titanium dioxide (AO-TiO ₂ ), titanium dioxide (TiO ₂ ), silicone (Silicone), acrylic styrene copolymer (MMA/Styrene copolymer), acrylic (PMMA), barium sulfate (BaSO ₄ ), zinc sulfide (ZnS), nylon powder, or a combination thereof.

Preferably, the optical waveguide component further comprises a luminescent dye, a luminescent quantum dot, a phosphor, or a combination thereof.

Preferably, the aforementioned photovoltaic cell is a dye-sensitized photovoltaic cell.

Preferably, the self-powered battery system further comprises a thermoelectric battery, a mechanical energy battery, or a combination thereof.

Preferably, the sensing component is a temperature sensor, a humidity sensor, a pressure sensor, a position sensor, a gas sensor, a speed sensor, and a light intensity sense. Detector, or a combination thereof.

Preferably, the foregoing configuration circuit further includes an energy storage component, a power tracking circuit, a power supply management module, a voltage adjustment circuit, a voltage regulation output circuit, or a combination thereof.

Preferably, the signal transmission component is a wireless transmission module.

Preferably, the self-powered sensing device further includes a disposable battery; wherein the disposable battery is electrically connected to the self-powered battery, the matching circuit, and/or the sensing element.

According to the invention as described above, the self-powered feeling with the optical waveguide element described above The measuring device can help the photovoltaic cells in the self-powered device to draw a weak light source. One of the core concepts of the present invention is to guide the light irradiated to the optical waveguide component into the photovoltaic cell in the self-power supply device by the light guiding and spectral conversion functions of the optical waveguide component, thereby improving the light entering amount and the power generation efficiency. In addition, the wavelength conversion function of the optical waveguide component also helps to perform red Shift conversion on short-wavelength light waves that are not in the absorption spectrum of the photovoltaic cell, so that the wavelength falls within the absorption spectrum of the photovoltaic cell, thereby improving the photovoltaic cell module. Efficiency. In summary, by providing the optical waveguide component, the limitation of the installation of the self-powered sensing device can be effectively solved, and the possibility of more commercial application of the self-powered sensing device is given. At the same time, in other cases, other environmental energy ingesting devices can be matched at the same time to meet the power required by the sensing component with a large power demand, so that the sensing component can continuously sense the environment and reduce the risk of insufficient power.

100, 200, 300‧‧‧ optical waveguide components

101, 301‧‧‧ shell

103, 201, 303‧‧‧ accommodating space

202, 302‧‧‧ openings

110, 210, 310‧‧‧Dye-sensitized photovoltaic cells

111,311‧‧‧ piezoelectric battery

120, 220, 320‧‧‧ motherboard

130, 230, 330‧‧‧ provisioning circuit

131, 231, 331‧‧‧ power tracking circuit

132, 232, 332‧‧‧ voltage adjustment circuit

133, 233, 333 ‧ ‧ energy storage unit

134, 234, 334‧‧‧ power management circuits

135, 235, 335‧‧‧ regulated output circuit

136, 236, 336‧ ‧ Microcontrollers

237‧‧‧Disposable battery

140‧‧‧ indoor position sensor

240‧‧‧temperature and humidity sensor

340‧‧‧ gas sensor

150, 250, 350‧‧‧ wireless modules

160, 260, 360‧‧‧ remote devices

The first A is an exploded view of the self-powered sensing device of the first embodiment of the present invention.

The first B diagram illustrates the self-powered sensing device of the first embodiment of the present invention.

The first C diagram is a schematic diagram of the first A-picture motherboard 120.

The first D diagram is a schematic diagram of the electrical connection of the self-powered sensing device shown in FIG.

The second A is a self-powered sensing device of the second embodiment of the present invention.

The second B is a cross-sectional view taken along line A in the second A diagram.

The second C diagram is a schematic diagram of the second A-picture motherboard 220.

The second D diagram is the electrical connection of the self-powered sensing device shown in Figure 2A. schematic diagram.

Figure 3A is an exploded view of the self-powered sensing device of the third embodiment of the present invention.

The third B diagram is a cross-sectional view taken along line B in the third A diagram.

The third C diagram illustrates the self-powered sensing device of the third embodiment of the present invention.

The third D diagram is a schematic diagram of the third A-picture motherboard 320.

The third E diagram is a schematic diagram of the electrical connection of the self-powered sensing device shown in FIG.

The invention provides a self-powered sensing device, wherein the self-powered sensing device can extract a weak light source or energy source in the room, and stably provide power required for the sensing component, so that the sensing component can continuously sense the environment and transmit information, and Reduce the management costs required to replace batteries.

As used herein, "self-powered sensing device" means a device that accepts environmental energy and thereby provides electrical energy for the desired device. Environmental energy sources include, but are not limited to, energy sources such as light energy, piezoelectric energy, wind energy, and thermal energy. More specifically, the term "self-powered sensing device" as used in the present invention means that the device includes an element that accepts ambient energy and thereby provides at least a portion of the electrical energy required by the device.

The invention provides a self-powered sensing device, comprising: an optical waveguide component; a self-powered battery comprising at least one photovoltaic cell; a sensing component; and a matching circuit electrically connected to the self-powered battery and the foregoing a sensing component for supplying electrical energy generated by the self-powered battery to the sensing component; a signal transmitting component Electrically connecting the sensing element; wherein the photovoltaic cell comprises a light receiving surface, and the optical waveguide component directs light incident on the self-powered sensing device to the light receiving surface of the photovoltaic cell.

The "optical waveguide element" referred to in the present invention is an element composed of a light guiding material, and the light guiding material is made of a transparent plastic as a substrate. The raw material of the substrate may be, but not limited to, polymethylmethacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), polydimethylsiloxane (Polydimethylsiloxane). PDMS), or a combination thereof. The term "light guiding" as used in the present invention means that light is refracted, scattered, or otherwise optically transmitted to a desired position, or that light is converted from a wavelength to a desired wavelength. The term "guiding" as used in the present invention refers to a process in which an optical waveguide element exerts its light guiding action.

The aforementioned substrate may be doped with particles of different refractive indices. The material of the foregoing particles may be, but not limited to, metal oxide, silicone, MMA/Styrene copolymer, PMMA, BaSO ₄ , zinc sulfide (ZnS), or nylon powder. (nylon powder). In a preferred embodiment, the metal oxide may be, but not limited to, scattering titanium dioxide (AO-TiO ₂ ), titanium dioxide (TiO ₂ ), or a combination thereof. The difference in refractive index between the particles and the substrate can produce the aforementioned light guiding effect, thereby increasing the light entering amount of the photovoltaic cell, thereby improving the efficiency of the photovoltaic cell module. In addition, a material such as a luminescent dye, a luminescent quantum dot, a fluorescent powder, or the like which has ultraviolet light or a shorter wavelength and a spectral red shifting ability to a battery having a low photoelectric conversion efficiency can be mixed. These materials can red-shift the short-wavelength incident light, causing the converted wavelength to fall within the absorption spectrum of the photovoltaic cell, thereby increasing battery efficiency and lifetime. The luminescent dye may be, but not limited to, a green dye (C545T), a red dye (DCJTI) or a combination thereof; the luminescent quantum dots may be, but not limited to, cadmium sulfide (CdS), copper indium sulfide (CuInS ₂ ) or The combination may be, but not limited to, YAG (Yttrium aluminium garnet) phosphor powder, PFS (potassium fluoroantimonate) phosphor powder, or a combination thereof.

In a preferred embodiment, the optical waveguide component can also be directly used as an outer casing of the self-powered sensing device to define an internal space for accommodating a self-powered battery, a sensing component, a compounding circuit, a signal transmitting component, or Its combination. Alternatively, the optical waveguide component can be wrapped in a self-powered battery, a sensing component, a compounding circuit, a signal transmitting component, or a combination thereof. In the preferred embodiment, the optical waveguide component can provide the foregoing light guiding function and can simultaneously provide protection for use, and can reduce the volume of the self-powered sensing device and can be applied to more fields.

The "photovoltaic cell" referred to in the present invention has a battery that absorbs light energy from the environment and thereby converts it into electric energy. The light energy includes, but is not limited to, a light source that exists in an environment such as sunlight, indoor illumination, a direct light source, or a reflected light source. Optical Waveguide Element In a preferred embodiment, the photovoltaic cell can be a dye sensitized photovoltaic cell.

The term "dye-sensitized photovoltaic cell" as used in the present invention is a well-known definition in the art. Briefly, the aforementioned dye-sensitized photovoltaic cell refers to a device that uses a dye as an active layer to absorb light into electrical energy. Specifically, in a preferred embodiment, the dye-sensitized photovoltaic cell comprises: a working electrode, a photosensitive dye layer, and a pair of electrodes. The working electrode comprises a substrate and a transparent conductive layer. The foregoing substrate may be, but not limited to, glass, metal plate, conductive plastic plate, or combination. The aforementioned transparent conductive layer may be, but not limited to, FTO, ITO, AZO, or a combination thereof. The aforementioned photosensitizing dye may be, but not limited to, a ruthenium metal dye, an organic dye, or a combination thereof. The aforementioned counter electrode may be, but not limited to, Pt, C, or a combination thereof. It is feasible that the peak wavelength of the absorption spectrum wavelength of the dye-sensitized photovoltaic cell is between 400 nm and 800 nm, so that the dye-sensitized photovoltaic cell can absorb more visible light sources in the indoor environment.

The term "sensing element" as used in the present invention refers to a sensor that can sense environmental information. Specifically, in a preferred embodiment, the sensing component can be a temperature sensor, a humidity sensor, a pressure sensor, a position sensor, a gas sensor, and a speed. A sensor, a light intensity sensor, or a combination thereof.

The term "circuitry" as used in the present invention is an electronic component and/or a functional combination thereof. The aforementioned electronic components may include wires, resistors, capacitors, batteries, inductors, transistors, insulators, wafers, controllers, or combinations thereof. In a possible implementation, the matching circuit electrically connected between the self-powered battery and the sensing element is a wire. In a preferred embodiment, the matching circuit electrically connected between the self-powered battery and the sensing component comprises an energy storage component, a power tracking circuit, a power supply management module, a voltage adjustment circuit, and a voltage regulator. Output circuit, or a combination thereof. The balance between the electrical energy produced by the self-powered battery and the electrical energy required by the aforementioned sensing component is properly configured to achieve high efficiency energy application and saving purposes. The energy storage component is used to store electrical energy. In a specific implementation, the energy storage component can be a capacitor, a super capacitor, or a rechargeable battery. In a specific implementation, the rechargeable battery is a lithium battery, a lithium polymer battery, a nickel hydrogen battery, or a combination thereof.

The term "signal transmission component" as used in the present invention refers to transmitting a signal sensed by a sensing component and transmitting it. The signal transmitting component is electrically connected to the sensing component. For example, after the sensing component senses a message, the information or the derivative signal of the information can be transmitted to a predetermined location through the signal transmitting component. In a possible implementation, the predetermined position is a display device. The aforementioned display device is, for example, but not limited to, an LED lamp, a screen, or a combination thereof. In a preferred embodiment, the predetermined location is a mobile device of a consumer.

The term "derived signal of information" as used in the present invention refers to a signal that represents the existence and/or characteristics of the information. For example, in one embodiment, the sensing element is a harmful gas sensor. When the harmful gas sensor detects that a harmful gas exists in the environment (ie, information), an instruction (a derivative signal of information) is transmitted to an LED lamp (predetermined position) through the signal transmitting component to allow the foregoing The LED light flashes to alert.

In a preferred embodiment, the aforementioned "signal transmission component" is a wireless transmission module. The so-called "wireless transmission module" means that the signal can be transmitted to a distant place by the action of an electric field or a magnetic field without requiring a physical connection. In a specific implementation, the foregoing wireless transmission module is, but not limited to, BLE, Zigbee, 6LoWPAN, EnOcean, LoRa, Z-Wave, Sub GHz, or a combination thereof.

In a preferred embodiment, the self-powered sensing device of the present invention may further include a housing defining an accommodation space. The accommodating space is provided by a self-powered battery, a sensing component, a matching circuit, a signal transmitting component, or a combination thereof. In a preferred embodiment, the housing is provided with at least one light incident surface. The aforementioned light incident surface means the aforementioned Light is passed through the housing to the surface of the housing space of the housing.

In a possible implementation, the unformed optical waveguide component can be formed by injecting into the casing, and the structural matching of the casing and the optical waveguide component can achieve design and function in different application fields. Good configuration on demand. For example, the light-receiving surface of the photovoltaic cell can be substantially perpendicular to the light incident surface, and the light is guided to the photovoltaic cell by the performance of the optical waveguide component, which can greatly increase the effective light-receiving area of the photovoltaic cell and increase the installation of the photovoltaic cell. The flexibility of location. This allows the self-powered sensing element to have a more efficient internal space configuration and can be applied to more fields.

The term "substantially perpendicular" as used in the present invention refers to a design completed by the concept of verticality, and does not limit the case where the two planes are sandwiched by 90 degrees. It is understood by those skilled in the art that the "light-receiving surface of the photovoltaic cell can be substantially perpendicular to the light-incident surface" means that the light-receiving surface of the photovoltaic cell and the light-incident surface are at an angle, so that the light incident amount is affected. A situation that is adversely affected. In most cases, the angle may be 70 to 110 degrees, or 85 to 95 degrees.

[First Embodiment]

This embodiment is a self-powered sensing device applied to an employee's electronic identification card. Please refer to FIG. 1A, which is an exploded view of the self-powered sensing device of the embodiment. As shown, the self-powered sensing device includes a housing 101 in which the housing 101 defines an accommodation space 103. The accommodating space 103 can be used for accommodating a business card 102, a dye-sensitized photovoltaic cell 110, a piezoelectric battery 111, and a motherboard 120. The dye-sensitized photovoltaic cell 110 is mounted on the inner side of the casing 101, and an optical waveguide component 100 is infused with a business card 102, a dye-sensitized photovoltaic cell 110, and a piezoelectric cell 111. And a casing 101 of a motherboard 120 to form a layer. The schematic diagram of the self-powered sensing device of this embodiment is as shown in the first B diagram. It should be noted that the optical waveguide component 100 described above is not a fixed-shaped layer structure before the aforementioned infusion. The foregoing first A diagram is only for the purpose of disassembling and disassembling the components of the self-powered sensing device shown in FIG.

The light-receiving surface 110a of the photovoltaic cell 110 of the present embodiment is substantially perpendicular to the light-incident surface 100a of the optical waveguide component 100. Through the optical waveguide component 100, the light source of the surrounding environment can be extracted and guided into the dye-sensitized photovoltaic cell 110. In turn, electrical energy is generated for use by the self-powered sensing device. By the arrangement of the optical waveguide component 100, the mounting position of the dye-sensitized photovoltaic cell 110 can have greater flexibility. As shown in this embodiment, even if the light receiving surface 110a is substantially perpendicular to the light incident surface 100a of the optical waveguide element, the dye-sensitized photovoltaic cell 110 can obtain a sufficient amount of light incident by the optical waveguide element 100. The piezoelectric battery 111 is mainly an energy harvesting module that converts vibration generated when the human body moves into electric energy, and further supplies electric energy required for the self-powered sensing device.

According to the first embodiment, the optical waveguide element 100 of the present embodiment was prepared by adding 0.01 g of titanium oxide particles (TiO ₂ ) to 10 ml of PDMS according to Table 1 and uniformly mixing. Then, a PDMS thermal curing agent (sylgard 184 curing agent) is added in proportion. If a photocuring method is used, the curing agent may also be a photocuring agent, and there is no particular limitation (PDMS: curing agent=10:1), and defoaming is performed after uniform stirring. That is, the preparation of the raw material of the optical waveguide element 100 is completed. The raw material is poured into a casing 101 containing a dye-sensitized photovoltaic cell 110, a piezoelectric cell 111, and a motherboard 120, and heated to 60 ° C for 1 hour. After curing, the optical waveguide component 100 is completed. The finished product of an embodiment is also completed. This formulation is a preferred combination of materials for indoor light sources and is particularly suitable for achieving high conversion efficiencies and practicality when used indoors.

Please refer to the first C diagram and the first D diagram, which are respectively schematic diagrams of the motherboard 120 and electrical connections of the embodiment. The motherboard 120 has a piezoelectric battery 111, a matching circuit 130, an indoor position sensor 140, and a wireless module 150. The configuration circuit 130 includes a power tracking circuit 131, a voltage adjustment circuit 132, an energy storage unit 133, a power management circuit 134, a voltage regulation output circuit 135, and a microcontroller 136. In the example shown in the figure, the indoor position sensor 140 and the wireless module 150 are combined in the same module (using the commercially available TICC254x; or: nRF51822). The power tracking circuit 131, the voltage adjustment circuit 132, the power management circuit 134, the regulated output circuit 135, and the microcontroller 136 are combined in the same module (using the commercially available LTC3106, and may also be: SPV1050 or ADP5090). The energy storage unit 133 is commercially available as EDLNF474B5R5C (also: ML-2020/F1AN or EEC-S0HD334V).

Please refer to FIG. 1D, which is a schematic diagram of electrical connections of a first embodiment of a self-powered sensing device provided by the present invention. The dye-sensitized photovoltaic cell 110 and the piezoelectric cell 111 are electrically connected to the power tracking circuit 131 in the compounding circuit 130. Power tracking The road 131 is used to adjust the output and load of the overall compounding circuit 130 according to the intensity of the ambient light source, so that the dye-sensitized photovoltaic cell 110 can operate at the most appropriate efficiency and improve the performance of the overall self-powered sensing device.

In the provisioning circuit 130, the power tracking circuit 131 is electrically connected to the voltage adjustment circuit 132. The voltage adjusting circuit 132 is used to increase the voltage of the electric energy emitted by the dye-sensitized photovoltaic cell 110 and the piezoelectric cell 111 to be sufficiently charged into the energy storage unit 133, and to reduce the energy loss caused by the charging process. The voltage adjustment circuit 132 is electrically connected to the energy storage unit 133 for temporarily storing the electrical energy in the energy storage unit 133 so that the operation of the device can be maintained without the environmental energy being ingested. The energy storage unit 133 is electrically connected to the power management circuit 134. The power management circuit 134 is used to manage the power output of the energy storage unit 133 so that the power of the energy storage unit 133 can be used most efficiently. The power management circuit 134 is electrically coupled to the regulated output circuit 135. The regulated output circuit 135 is used to stabilize the voltage of the power management circuit 134 and is supplied to the microcontroller 136 for use.

When the power generated by the dye-sensitized photovoltaic cell 110 and the piezoelectric cell 111 is greater than the electrical energy consumed by the indoor position sensor 140, the remaining electrical energy is stored in the energy storage unit 133 via the compounding circuit 130. Conversely, when the energy emitted by the dye-sensitized photovoltaic cell 110 and the piezoelectric cell 111 is less than the electrical energy consumed by the indoor position sensor 140, the shortage of electrical energy is supplied by the energy storage unit 133 via the compounding circuit 130.

The indoor position sensor 140, the wireless module 150 and the microcontroller 136 are electrically connected to each other, and the signal from the indoor position sensor 140 is received by the microcontroller 136, and the signal is transmitted to the wireless module 150 by wireless. Module 150 forwards the signal to remote unit 160. In addition, the microcontroller 136 is also received from the external via the wireless module 150. The control signal further adjusts and controls the monitoring of the indoor position sensor 140. So come. The indoor position sensor 140 can adjust its sensed parameters according to different usage environments.

Table 2 is a comparison table of the efficiency before and after the mounting of the optical waveguide element 100 of the first embodiment. Among them, Voc stands for Open Circuit Voltage, Isc stands for Short Circuit Current, FF stands for Fill Factor, Pmax stands for Maximum Power, and Vmp stands for maximum power (Maximum Power) Voltage), Imp represents the maximum power current (Maximum Power Current), and the power gain effect refers to the percentage increase of Pmax before the installation of the optical waveguide component 100 after the optical waveguide component 100 is mounted. In this embodiment, since the light-receiving surface 110a of the dye-sensitized photovoltaic cell 110 is perpendicular to the light-incident surface 100a of the optical waveguide component 100, the light-guiding function of the optical waveguide component 100 is assisted, and the power generation of the dye-sensitized photovoltaic cell 110 is greatly affected. Big.

The specific application of this embodiment may, for example, when an employee is equipped with the electronic identification card to approach an access control system, the microcontroller 136 accepts the indoor position sensor 140. The sensed position signal is transmitted to the wireless module 150 and transmitted to the remote device 160 beside the access control system via the wireless module 150. After receiving the information of the employee, the remote device 160 can record and transmit the associated information to the access control system for identification, which is convenient for the enterprise to enter and exit the record and management.

[Second embodiment]

This embodiment is an application of the self-powered sensing device provided by the present invention for preventing heat stroke. Please refer to Figure 2A. As shown, the self-powered sensing device includes an optical waveguide component 200. The optical waveguide component 200 is formed by infusion molding, directly coating a dye-sensitized photovoltaic cell 210 and a motherboard 220, as shown in FIG. The optical waveguide component 200 has at least one opening 202.

The formulation of the optical waveguide component 200 of this example was as shown in Table 3. First, 0.08 g of C545T organic dye dissolved in 5 ml of ethanol was added to 30 ml of PDMS. Then, 0.02 g of PMMA particles were added and uniformly mixed, and then evacuated and ethanol was removed. Then, a PDMS thermal curing agent (sylgard 184 curing agent) is added in proportion. If a photocuring method is used, the curing agent may also be a photocuring agent, and there is no particular limitation (PDMS: curing agent = 10:1), and defoaming is performed after uniform stirring. That is, the preparation of the raw material of the optical waveguide element 200 is completed. Next, the raw material of the optical waveguide component 200 is poured into a mold containing a dye-sensitized photovoltaic cell 210 and a motherboard 220 and heated to 60 ° C for 1 hour. After the curing is completed, the sample is taken out and the finished product of the second embodiment is completed. Preparation.

Please refer to the second C diagram and the second diagram D, which are respectively schematic diagrams of the motherboard 220 and electrical connections of the embodiment. The motherboard 220 has a configuration circuit 230, a temperature and humidity sensor 240, and a wireless module 250. The foregoing configuration circuit 230 includes a power tracking circuit 231, a voltage adjustment circuit 232, an energy storage unit 233, a power management circuit 234, a voltage regulation output circuit 235, a microcontroller 236, and a disposable battery 237. In the specific example shown in the figure, the temperature and humidity sensor 240 is: HDC1000 (also: Si705x or TSYS02); the wireless module 250 is: TICC254x (also: nRF51822); the power tracking circuit 231 The voltage adjustment circuit 232, the power management circuit 234, the voltage regulation output circuit 235 and the microcontroller 236 are combined in the same module (using: LTC3106, may also be: SPV1050 or ADP5090); the energy storage unit 233 is: EDLNF474B5R5C ( It can also be used: ML-2020/F1AN or EEC-S0HD334V); the aforementioned disposable battery adopts: CR2032 (also: CR2477).

Please refer to the second D diagram, which is a schematic diagram of electrical connections of the self-powered sensing device provided in the embodiment. The dye-sensitized photovoltaic cell 210, the power tracking circuit 231, the voltage adjustment circuit 232, the energy storage unit 233, the power management circuit 234, the voltage regulation output circuit 235, the microcontroller 236, the temperature and humidity sensor 240, and the wireless module 250 are electrically connected in substantially the same manner as the first embodiment, and are transported in substantially the same manner Work. The present embodiment adds a disposable battery 237 that is electrically coupled to the power management circuit 234 of the compounding circuit 230 and that is used to provide the aforementioned self-powered sensing device for longer endurance and to increase stability of use. The temperature and humidity sensor 240 senses the temperature and humidity of the environment through the opening 202 (see Figure 2A).

When the power generated by the dye-sensitized photovoltaic cell 210 is greater than the power consumed by the temperature and humidity sensor 240, the remaining electrical energy is stored in the energy storage unit 233 via the configuration circuit 230. When the energy emitted by the dye-sensitized photovoltaic cell 210 is less than the electrical energy consumed by the temperature and humidity sensor 240, the shortage of electrical energy is supplied by the energy storage unit 233 via the compounding circuit 230. When the energy storage unit 233 is unable to provide sufficient power, the disposable battery 237 will make up the shortage of power, so that the self-powered sensing device can continue to operate.

Table 4 is a comparison table of the efficiency before and after the installation of the self-powered sensor optical waveguide component 200 in the second embodiment, and the definition of each parameter is the same as that of the first embodiment.

In this embodiment, the optical waveguide component 200 is completely coated with the dye-sensitized photovoltaic cell 210 and the circuit board 220, and all the incident light irradiated on the optical waveguide component 200 is guided to the dye sensitive by the light guiding function of the optical waveguide component 200. The light receiving surface of the photovoltaic cell 210 In addition, the short-wavelength light wave is red-shifted by the function of wavelength conversion, so that the wavelength falls within the preferred absorption range of the dye-sensitized photovoltaic cell 210. Thereby, the dye-sensitized photovoltaic cell 210 inside the device can be improved in power generation efficiency, in addition to being not affected by the illumination angle. The user can hang the device on a backpack, a suitcase or any light-receiving personal belongings, and the temperature and humidity condition of the current user environment can be monitored at any time by the temperature and humidity sensor 240 in the device, once the heat stroke may be caused. Conditionally, the device transmits the signal to the user's mobile phone (remote device 260) via the wireless module 250 and informs the degree of heatstroke.

[Third embodiment]

This embodiment is an application of the self-powered sensing device provided by the present invention to vehicle air quality monitoring. Please refer to the third picture A. As shown, the self-powered sensing device includes a housing 301 for housing a dye-sensitized photovoltaic cell 310 coated with an optical waveguide component 300 as shown in FIG. 3A (as shown in FIG. A piezoelectric battery 311 and a motherboard 320, wherein the housing 301 has at least one opening 202. The assembled finished product is shown in Figure 3C.

The optical waveguide component 300 of this embodiment is prepared in the same manner as the second embodiment, and the formulation of the optical waveguide component 300 is as shown in Table 5. In this embodiment, the wireless sensor is applied to a relatively strong light environment. Therefore, the scattering particles in the optical waveguide component 300 are particularly selected from the group consisting of different size compositions, large specific surface area, and better light scattering performance (AO-TiO). ₂ ) Particles, material specifications are shown in Table 6.

Please refer to the third C diagram and the third D diagram, which are schematic diagrams and electrical connections of the motherboard 320 of the present embodiment. The motherboard 320 has a matching circuit 330 thereon. The configuration circuit 330 includes an indoor position and gas sensor 340, and a wireless module 350. The configuration circuit 330 includes a power tracking circuit 331, a voltage adjustment circuit 332, an energy storage unit 333, a power management circuit 334, a voltage regulation output circuit 335, and a microcontroller 336. In the specific example shown in the figure, the gas sensor 340 is used. Use: OZIR Ambient CO2 Sensor; the foregoing wireless module 350 adopts: TICC254x (also: nRF51822); the power tracking circuit 331 module, voltage adjustment circuit 332, power management circuit 334, voltage regulation output circuit 335 and microcontroller The 336 series is combined with the same module (using: LTC3106, and may also be: SPV1050 or ADP5090); the aforementioned energy storage unit 333 is: EDLNF474B5R5C (also: ML-2020/F1AN or EEC-S0HD334V). The gas sensor 340 senses ambient gas through the aforementioned opening 302 (see Figure 3C).

Please refer to the third E diagram, which is a schematic diagram of the electrical connection of the embodiment. The electrical connection manner in the matching circuit 330 is substantially the same as that shown in the first embodiment.

Table 4 shows the relationship between the current and the voltage of the dye-sensitized photovoltaic cell 310 of the present embodiment, which simulates a solar wave before and after the optical waveguide element 300 is applied, and the definition of each parameter is the same as that of the first embodiment. As shown in the table, after the optical waveguide component 300 is coated, the power generation efficiency of the dye-sensitized photovoltaic cell 310 can be effectively increased.

Gas sensor 340, wireless module 350 and micro control in this embodiment The devices 336 are electrically connected to each other. The microcontroller 336 receives the signal from the gas sensor 340 and provides the signal transmission to the wireless module 350. The wireless module 350 transmits the signal to the remote device 360. So come. The remote device 360 can instantly monitor the gas at the location of the gas sensor 340.

The optical waveguide component 300 of the present embodiment is completely covered around the dye-sensitized photovoltaic cell 310. The incident light optical waveguide component irradiated on the optical waveguide component 300 is guided to the light receiving surface of the dye-sensitized photovoltaic cell 310 by the light guiding action of the optical waveguide component 300, and the user can hang the device in the vehicle. It can be exposed to light without being affected by the angle.

For example, the user can hang the device on any light-receiving item in the vehicle, and the gas sensor 340 in the device can monitor the current air quality of the current user to prevent the carbon dioxide concentration from being too high and cause driving. A doze situation occurs.

100‧‧‧ Optical waveguide components

101‧‧‧shell

110‧‧‧Dye-sensitized photovoltaic cells

111‧‧‧Piezoelectric battery

120‧‧‧ motherboard

Claims (14)

A self-powered sensing device comprising: an optical waveguide component; a self-powered battery comprising at least one photovoltaic cell; a sensing component; and a matching circuit electrically connected to the self-powered battery and the sensing component And supplying the electrical energy generated by the self-powered battery to the sensing component; a signal transmitting component electrically connecting the sensing component; wherein the photovoltaic cell comprises a light receiving surface, and the optical waveguide component is guided to the foregoing Light from the inductance measuring device to the aforementioned light receiving surface of the photovoltaic cell. The self-powered sensing device of claim 1, wherein the optical waveguide component encapsulates the self-powered battery, the sensing component, the matching circuit, the signal transmitting component, or a combination thereof. The self-powered sensing device of claim 1, wherein the optical waveguide component defines an internal space, and the self-powered battery, the sensing component, the matching circuit, the signal transmitting component or a combination thereof is placed The aforementioned internal space. The self-powered sensing device of claim 1 or 2, further comprising a housing, wherein the housing defines an accommodating space, wherein the accommodating space accommodates the optical waveguide component, the self-powered battery, The sensing element, the matching circuit, and the signal transmitting component; the housing is provided with at least one light incident surface, and the light receiving surface of the photovoltaic cell is substantially perpendicular to the at least one light incident surface. The self-powered sensing device of claim 1, wherein the optical waveguide component comprises a substrate, and the substrate is doped with at least one particle. The self-powered sensing device of claim 5, wherein the material of the substrate is acrylic, polyvinyl alcohol, polyvinylpyrrolidone, polydimethylsiloxane, or a combination thereof. The self-powered sensing device of claim 5, wherein the material of the foregoing particles The system is a scattering type titanium dioxide, titanium dioxide, a cerium oxide resin, an acrylic styrene copolymer, acrylic, barium sulfate, zinc sulfide, nylon powder, or a combination thereof. The self-powered sensing device of claim 5, wherein the optical waveguide component further comprises a luminescent dye, a luminescent quantum dot, a phosphor, or a combination thereof. The self-powered sensing device of claim 1, wherein the photovoltaic cell is a dye-sensitized photovoltaic cell. The self-powered battery device of claim 1 , wherein the self-powered battery system further comprises a thermoelectric battery, or a mechanical energy battery, or a combination thereof. The self-powered sensing device of claim 1, wherein the sensing component is a temperature sensor, a humidity sensor, a pressure sensor, a position sensor, a gas sensor, and a A speed sensor, a light intensity sensor, or a combination thereof. For example, the self-powered sensing device of claim 1 further includes an energy storage component, a power tracking circuit, a power supply management module, a voltage adjustment circuit, a voltage regulation output circuit, or a combination thereof. For example, in the self-powered sensing device of claim 1, the signal transmitting component is a wireless transmission module. The self-powered sensing device of any one of the preceding claims, further comprising a disposable battery; wherein the disposable battery is connected to the self-powered battery, the aforementioned matching circuit, and/or the sensing element Electrical connections.