JP7037781B2 - Environmental information sensing system for power generation equipment and facilities using it - Google Patents

Description

The present invention relates to a power generation device that effectively utilizes the kinetic energy of the air flowing in the ventilation duct, and an environmental information sensing system of a facility that uses this device.

For ventilation of facilities (living rooms, etc.), the first-class mechanical ventilation shown in FIG. 13 (A), the second-class mechanical ventilation shown in FIG. 13 (B), and the third-class mechanical ventilation shown in FIG. 13 (C) are known. Has been done.
In the facility 8A where the first-class mechanical ventilation shown in FIG. 13A is performed, air is supplied from the air supply duct 83 by the air supply fan 81, and exhaust is performed from the exhaust duct 84 by the exhaust fan 82. In the first-class mechanical ventilation, the room can be maintained at a positive pressure or a negative pressure by adjusting the power of the air supply fan 81 and the exhaust fan 82. Ventilation of underground facilities such as underground malls and underground parking lots is basically type 1 mechanical ventilation.

In the facility 8B where the second type mechanical ventilation shown in FIG. 13B is performed, air is supplied from the air supply duct 83 by the air supply fan 81, and exhaust gas is discharged from the exhaust duct 84 by natural ventilation. In this second type mechanical ventilation, the air supply fan 81 can maintain the room at a positive pressure. Ventilation in a clean room is basically type 2 mechanical ventilation.

In the facility 8C where the third-class mechanical ventilation shown in FIG. 13C is performed, air is supplied from the air supply duct 83 by natural ventilation, and exhaust is performed from the exhaust duct 84 by the exhaust fan 82. In the third type mechanical ventilation, the exhaust fan 82 can keep the room at a negative pressure. Ventilation of a residential room is basically a third-class mechanical ventilation, for example, when the door of the toilet is opened, the air in the toilet does not flow out to the next room.

JP 2009-8370

By the way, in the various mechanical ventilations shown in FIGS. 13 (A), 13 (B) and 13 (C), the air supplied from the air supply duct 83 is introduced into the room as it is and exhausted from the exhaust duct. The air is released into the atmosphere as it is.
Therefore, the kinetic energy of the air supplied from the air supply duct or the kinetic energy of the air exhausted from the exhaust duct is wasted.

An object of the present invention is to provide a power generation device that effectively utilizes the kinetic energy of the air flowing in the ventilation duct, and an environmental information sensing system of a facility using this device.

The gist of the power generation device of the present invention is as follows.
(1) A power generation device provided with a power generation device attached to any part of a ventilation path formed in a structure or a vehicle and receiving stress from the air flowing through the ventilation path to generate power.
Structures include buildings, underground facilities such as underground malls and underground parking lots, tunnels, and the like.
Vehicles include devices for moving and transporting people or luggage such as automobiles, trains, and ships.
(2)
At least one power generation device that generates power by receiving stress is provided at any point in the flow path of the ventilation duct or at the beginning or end of the flow path, and the power generation device is subjected to the stress from the air flowing in the ventilation duct. A power generator characterized by receiving.
The power generation device of the present invention includes type 1 mechanical ventilation (see FIG. 13 (A) described above), type 2 mechanical ventilation (see FIG. 13 (B) described above), and type 3 mechanical ventilation (see FIG. 13 (B) described above). It can be applied to any of C)).
Ventilation ducts also include air supply ducts, exhaust ducts or circulation ducts. For example, when a room is to be ventilated, both an air supply duct and an exhaust duct may be provided, only one of them may be provided, and both an air supply duct and a circulation duct may be provided. It may be provided with air supply ducts, circulation ducts and exhaust ducts.
For example, the ventilation duct may have one air inlet and one air outlet. Further, for example, when one ventilation duct is branched into a plurality of branches, there is one air inlet but a plurality of air outlets. When a plurality of ducts are integrated into one, there is one air outlet but a plurality of air inlets.
In the present invention, the air inlet of the air supply duct is referred to as an air acquisition port, the air outlet is referred to as an air inlet, the air inlet of the exhaust duct is referred to as an air suction port, and the air outlet is referred to as an air outlet.
The location where the power generation device is provided may be near the air inlet and the air outlet of the ventilation duct, or may be inside the ventilation duct.
Further, when one ventilation duct is branched into a plurality of branches, fins for adjusting the branching amount may be provided at the branching points, and the power generation device of the present invention can be attached to these fins. Further, the fin itself can be configured as a power generation device.
Further, inside the ventilation duct, a shutter-shaped anti-vibration attenuator (slat) may be provided. In the shutter-shaped anti-vibration attenuator, a power generation device can be attached to the plate used for the shutter. Further, the fin itself can be configured as a power generation device.
Examples of elements, devices, and devices that generate power by receiving stress include piezo power generation devices and magnetostrictive power generation devices, which will be described later.

(3)
The power generation device according to (2).
The power generation device is a piezo power generation device, and the piezo power generation device has at least one inner wall of the ventilation duct and a workpiece in the flow path of the ventilation duct so as to receive stress from the air flowing in the ventilation duct. (Stay, etc.) or a power generation device fixed to the start member or end member of the ventilation duct.
The piezo power generation device is, for example, rectangular and can be arranged such that one end on the longitudinal side is angled (typically approximately perpendicular) to the axis of the flow path.
The piezo power generation device is a windsock type, that is, when the piezo power generation device is a rectangular type, one end on the longitudinal side can be arranged so that the rectangular surface is substantially parallel to the axis of the flow path.

(4)
The power generation device according to (2).
The magnetostrictive power generation device is a magnetostrictive power generation device, and the magnetostrictive power generation device has at least one vent duct so that a coil is wound around a magnetostrictive material core and stress is received from air flowing in the vent duct. A power generation device fixed to the inner wall of the ventilation duct, a workpiece (stay) in the flow path of the ventilation duct, or a start member or an end member of the ventilation duct.
In the present invention, a magnetostrictive power generation device in which a coil is wound around a magnetostrictive material core can be used as the power generation device.
The form of attaching the magnetostrictive power generation device to the stay can be the same as the form of attaching the piezo power generation device described above.

(5)
The power generation device according to (2).
The power generation device is a piezoelectric / magnetic strain power generation device that simultaneously performs piezoelectric power generation and magnetic strain power generation, and the piezoelectric / magnetic strain power generation device has at least one ventilation portion so as to receive stress from air flowing in the ventilation duct. A power generation device fixed to an inner wall of a duct, a work (stay) in a flow path of the ventilation duct, or a start end member or an end member of the ventilation duct.
The mounting form of the piezoelectric / magnetostrictive power generation device to the stay can be the same as the mounting form of the piezo power generation device described above.

(6)
The power generation device according to any one of (2) to (5).
A power generation device in which the ventilation duct is an air supply duct or an exhaust duct provided in a clean room or an underground facility.
The power generation device of the present invention is suitable for application to an underground facility or a ventilation duct in a clean room.
The electric power generated by the power generation device can be used as the electric power for sensing in the sensing system of the clean room of the present invention.

The gist of the environmental information sensing system of the facility of the present invention is as follows.
(7)
A system that senses environmental information of a facility using the power generation device according to any one of (2) to (6).
The power generation device provided at any point in the flow path of the ventilation duct of the facility, and
At least one sensor for detecting environmental information of the facility provided at any location in the flow path of the ventilation duct or anywhere inside or outside the facility.
The main circuit driven by the electric power generated by the power generation device,
The facility's environmental information sensing system is characterized by being equipped with.
The environmental information sensing system of the facility of the present invention can be equipped with a charging device for electric power generated by the power generation device described in (2) to (6).
Ventilation ducts include air supply ducts, exhaust ducts or circulation ducts.
Since a large amount of electric power is not required for sensing temperature, humidity, atmospheric pressure, etc., the above charging device can be used as a power source.

(8)
The environmental information sensing system of the facility described in (7).
An environmental information sensing system for a facility, wherein the environmental information is the concentration, temperature, humidity, and atmospheric pressure of a predetermined gas inside the facility.

(9)
The environmental information sensing system of the facility according to (7) or (8).
An environmental information sensing system for a facility, wherein the facility is an underground facility (including an underground parking lot) or a clean room.

(10)
A human / animal sensing system using the power generation device according to any one of (2) to (6).
The power generation device provided at any point in the flow path of the ventilation duct of the facility, and
At least one sensor for detecting a person or an animal provided at any point in the flow path of the ventilation duct, anywhere inside or outside the facility.
The main circuit driven by the electric power generated by the power generation device,
A human / animal sensing system characterized by being equipped with.
As the sensor in the present invention, an infrared sensor or a far-infrared sensor can be used, or an imaging device (for example, an 8 * 8 pixel, 16 * 16 pixel CCD) can also be used.

In the present invention, the following power generation devices can be used.
(A) A power generation device including a flexible flat plate-shaped first electrode, a piezoelectric material formed on one side of the electrode, and a second electrode formed on the surface of the piezoelectric material.
(B) A power generation device including a flexible flat plate-shaped first electrode, a piezoelectric material formed on both sides of the electrode, and a second electrode formed on the surface of each of the piezoelectric materials.
(C) A core made of a magnetostrictive material in the form of a flexible flat plate,
A coil made of a coil wire wound around the core and a coil
Power generation device equipped with.
(D) A core composed of a flexible flat plate-shaped first electrode, a magnetostrictive / piezoelectric material formed on one side of the electrode, and a second electrode formed on the surface of the magnetostrictive / piezoelectric material.
A coil made of a coil wire wound around the core and a coil
Power generation device equipped with.
(E) A core composed of a flexible flat plate-shaped first electrode, a magnetostrictive / piezoelectric material formed on both sides of the electrode, and a second electrode formed on the surface of each magnetostrictive / piezoelectric material.
A coil made of a coil wire wound around the core and a coil
Power generation device equipped with.
(F) A flexible flat plate-like base formed by sandwiching a film-shaped piezoelectric material (PVDF (polyvinylidene fluoride) ferroelectric substance or the like) between a film-shaped first electrode and a second electrode. A power generation device that is attached to one or both sides of a material (typically composed of synthetic resin or metal).
(G) A power generator formed by sandwiching a film-shaped piezoelectric material between a film-shaped first electrode and a second electrode, and a flexible flat plate-shaped base material (typically a synthetic resin material or a metal material). A power generation device that is made up of (consisting of) and laminated alternately.
(H) A power generator formed by sandwiching a film-shaped piezoelectric material between a film-shaped first electrode and a second electrode is a flexible flat plate-shaped base material (typically a synthetic resin material or a metal material). Power generation device composed of.
(I) With the configuration of the power generation device of (f)-(h) using magnetostriction / piezoelectric material instead of the piezoelectric material as the core, a coil made of a coil wire wound around the core, and a coil.
Power generation device equipped with.
The power generation devices (a) to (i) are typically strip-shaped (rectangular), and one end thereof is fixed to a structure or the like.
The piezoelectric material or core (or coil) can be formed on the fixed end side and not on the side far from the fixed end side.
Usually, a plurality of power generation devices are used as one unit.
The power generation devices (c) to (e) and (i) typically include two terminals drawn from the coil and terminals drawn from the first electrode and the second electrode.
The two terminals from the coil are AC / DC converted and supplied to the sensing circuit (main body circuit). Further, the terminals drawn from the first electrode and the second electrode formed on the magnetostrictive / piezoelectric material are also AC / DC converted and supplied to the sensing circuit.
The electromotive force appearing in each piezoelectric electrode of the laminated body core can be combined so as to be synergistic (not offset), and this combined electromotive force can be AC / DC converted.

It is also possible to synthesize this DC electromotive force after AC / DC conversion of the electromotive force appearing in each piezoelectric electrode of the laminated body core.
In the present invention, as the magnetostrictive / piezoelectric material of (c) to (e), a synthetic resin piezoelectric material in which the magnetostrictive fiber is oriented and kneaded can be used. In this case, the coil wire is wound around the core so as to be orthogonal to the direction of the magnetostrictive fiber.
A non-magnetic metal is used as the first electrode and the second electrode, and the coil can be surrounded by a soft magnetic material.

According to the power generation device of the present invention, the kinetic energy of the air flowing in the ventilation duct can be effectively used.
According to the clean room sensing system of the present invention, since the power generation device of the present invention is used, a clean room sensing system can be constructed without using a commercial power source.

FIG. 1 is a front explanatory view of an underground facility S showing an embodiment in which a power generation device of an underground facility that performs first-class mechanical ventilation is applied. FIG. 2 is an explanatory diagram of a ventilation duct of an attic space CS of an underground facility S showing an embodiment in which a power generation device of an underground facility that performs first-class mechanical ventilation is applied. FIG. 3 is a diagram showing an outline of the environmental information sensing system 3. FIG. 4 is a diagram showing in detail the piezo power generation device 311 having a unimorph configuration used as the power generation device 31 of the present invention. FIG. 4A is a front view of the piezo power generation device 311 and FIG. 4B is a side view of the piezo power generation device 311. FIG. 5 is a diagram showing in detail the piezo power generation device 311 having a bimorph configuration used as the power generation device 31 of the present invention. FIG. 5A is a front view of the piezo power generation device 311 and FIG. 5B is a side view of the piezo power generation device 311. FIG. 6 is a diagram showing a magnetostrictive power generation device 311A that can be used in place of the piezo power generation device 311. FIG. 7 is an explanatory diagram of an embodiment in which the present invention is applied to a clean room where type 2 mechanical ventilation is performed. FIG. 8 is a diagram showing an example in which the main air supply duct 51 branches into a plurality of branch air supply ducts 52. FIG. 9 is an explanatory diagram showing a ventilation system in which the air in the clean room CR can be exhausted to the outside by the exhaust duct 56. FIG. 10 is a diagram showing a plurality of piezo power generation devices 311 provided in the air acquisition port 54 of the main air supply duct 51 of the clean room. FIG. 11 is an explanatory diagram showing a mode in which the piezoelectric / magnetostrictive power generation device used as the power generation device of the present invention is installed in a subway station. FIG. 12 is an explanatory diagram showing a piezoelectric / magnetostrictive power generation device used as the power generation device of the present invention, and FIG. 12A is a diagram showing an example in which a wire rod having a length substantially the same as the coil length is used as the magnetostrictive material. FIG. 12B is a diagram showing an example in which a wire rod sufficiently shorter than the coil length is used as the magnetostrictive material. 13 is a diagram showing ventilation of a facility (living room, etc.), FIG. 13 (A) is a first-class mechanical ventilation, FIG. 13 (B) is a second-class mechanical ventilation, and FIG. 13 (C) is a third-class machine. It is explanatory drawing of ventilation.

In the present invention, the power generation device can be applied to a vehicle, but an example of applying the power generation device to a structure will be described below.
1 and 2 are diagrams showing an embodiment in which the power generation device of the present invention is applied to an underground facility that performs first-class mechanical ventilation.
FIG. 1 is a front explanatory view of the underground facility S, and FIG. 2 is an explanatory view of a ventilation duct of the attic space CS of the underground facility S.
As shown in FIG. 1, an aisle space P, a store space M, and an attic space CS are formed in the underground facility S.
As shown in FIG. 2, a main air supply duct 11 and a main exhaust duct 21 are installed in the attic space CS.
As shown in FIGS. 1 and 2, the branch air supply duct 12 branches from the main air supply duct 11, and the branch exhaust duct 22 branches from the main exhaust duct 21.

In the present embodiment, the main air supply duct 11 and the main exhaust duct 21 are ducts having a rectangular cross section, and the branch air supply duct 12 and the branch exhaust duct 22 are bellows type ducts having a circular cross section.
The tip of the branch air supply duct 12 extends to the air inlet AIN on the ceiling of the underground facility S, and the branch air supply duct 12 opens at the air inlet AIN.
As shown in FIG. 1, the tip of the branch exhaust duct 22 extends to the air suction port ADR at the lower part of the wall surface of the underground facility S, and the branch exhaust duct 22 opens at the air suction port ADR.
In FIGS. 1 and 2, the environmental information sensing system 3 is provided in the main exhaust duct 21.

FIG. 3 is a diagram showing an outline of the environmental information sensing system 3.
In FIG. 3, the environmental information sensing system 3 includes a power generation device 31, a sensor 32, and a circuit unit 33.
In the present embodiment, as shown in FIG. 3, the power generation device 31 is attached in the flow path of the main exhaust duct 21 by using a stay (workpiece in the flow path in the present invention) ST. Further, the sensor 32 is attached in the flow path of the main exhaust duct 21 (inside the main exhaust duct 21).
The circuit unit 33 is attached to the outer surface of the main exhaust duct 21 (outside the main exhaust duct).

The circuit unit 33 incorporates an AC / DC converter 331 (AC / DC converter group), a regulator 332, a power supply 333, a secondary battery 334, a processor 335, a communication circuit 336, and an A / D converter 337, and has an antenna 338. It is implemented.
In the present embodiment, the power generation device 31 is composed of a plurality of piezo power generation devices 311. Normally, the AC / DC converter 331 steps down the power from the power generation device 31.
The electric power generated by the power generation device 31 (electric power generated from the plurality of piezo power generation devices 311) is converted into DC electric power by the AC / DC converter 331. In this embodiment, the regulator 332 synthesizes the power from the AC / DC converter 331 and adjusts it to an appropriate voltage (step-up or step-down, usually step-down).
The power prepared by the regulator 332 is sent to the power supply 333. The power supply 333 may be used for driving itself (environmental information sensing system 3) or for charging the secondary battery 334.
The electric power charged in the secondary battery 334 is used to drive the environmental information sensing system 3 when the air flow in the main exhaust duct 21 is weak or the like.

The processor 335 controls the entire environment information sensing system 3 by a program stored in a storage device (ROM or the like) (not shown).
The detection signal from the sensor 32 (several sensors in FIG. 3) is taken into the processor 335 via the A / D converter 337. As the sensor 32, a gas detector such as CO, CO2, NO, NO2, a temperature detector, a humidity detector, and a pressure detector can be used.
The processor 335 may perform a predetermined sensing operation and then pass the sensing data (digitized detection signal) to the communication circuit 336, and the communication circuit 336 may transmit the sensing data to a host device (not shown) via the antenna 338. can.
The detection by the sensor 32 and the transmission of the sensing data by the communication circuit 336 to the host device can be appropriately performed at predetermined time intervals.

FIG. 4 is a diagram showing in detail the piezo power generation device 311 having a unimorph configuration used as the power generation device 31 of the present invention. FIG. 4A is a front view of the piezo power generation device 311 and FIG. 4B is a side view of the piezo power generation device 311.
As shown in FIGS. 4A and 4B, the piezo power generation device 311 includes a piezo material 3112, a first electrode 3111 and a second electrode 3113 formed on both surfaces thereof, and vibration provided on the second electrode 3113 side. It is composed of a structure 3114.
In this embodiment, the piezo power generation device 311 is attached to the stay ST.
As the piezo material 3112, a PVDF (polyvinylidene fluoride) ferroelectric substance or the like can be used.
The first electrode 3111 and the second electrode 3113 are connected to the AC / DC converter 331 shown in FIG. 3 via the wirings w1 and W2.
The vibrating structure 3114 can be made of a flexible plate material made of a metal such as aluminum or a synthetic resin.
The vibration structure 3114 may be provided not only above the second electrode 3113 but also below the second electrode 3113.

FIG. 5 is a diagram showing in detail the piezo power generation device 311 having a bimorph configuration used as the power generation device 31 of the present invention. FIG. 5A is a front view of the piezo power generation device 311 and FIG. 5B is a side view of the piezo power generation device 311.
As shown in FIGS. 5A and 5B, in the piezo power generation device 311, the first electrode 3111, the first piezo material 3112, the second electrode 3113, the vibration structure 3114, the third electrode 3115, and the third piezo material It is composed of 3116 and a fourth electrode 3117.
Although not shown, the piezo power generation device can be configured by stacking a plurality of piezo power generation device elements (piezo power generation device 311 in FIG. 4 or FIG. 5).
The first electrode 3111, the second electrode 3113, the third electrode 3115, and the fourth electrode 3117 are shown in FIG. 3 via the wirings w1 and W2, similarly to the first electrode 3111 and the second electrode 3113 of the power generation device 31 of FIG. It is connected to the shown AC / DC converter 331.
It is also possible to short-circuit the second electrode and the third electrode.
In the case of the bimorph structure, the vibration structure 3114 does not have to exist in theory, but it is preferable that the vibration structure 3114 actually exists.

FIG. 6 shows a magnetostrictive power generation device 311A that can be used in place of the piezo power generation device 311 in the power generation device 31 of the environmental information sensing system 3 of FIG. In FIG. 6, the magnetostrictive power generation device 311A is configured by winding a coil 3119 around a magnetostrictive metal core 3118.
Although the coil 3119 is shown with a small number of turns for convenience of explanation, it is different from the actual configuration.
Explaining with reference to FIG. 3, the magnetostrictive power generation device 311A converts the electromotive force into direct current by the AC / DC converter 331, similarly to the piezo power generation device 311. In this case, normally, the output of the AC / DC converter 331 is boosted by the regulator 332. The regulator 332 synthesizes the power from the AC / DC converter 331 and adjusts it to an appropriate voltage. As in this example, when the power generation device 31 is a magnetostrictive power generation device 311A, the regulator 332 usually boosts the input voltage.

FIG. 7 is an explanatory diagram of an embodiment in which the present invention is applied to a clean room where type 2 mechanical ventilation is performed.
In FIG. 7, the clean room CR is provided with an air shower area SA.
A main air supply duct 51, a branch air supply duct 52, and a return duct 53 are laid in the clean room CR.
A filter 541 is provided in the air acquisition port 54 of the main air supply duct 51. Further, a piezo power generation device 311 is attached to the air acquisition port 54 (see FIG. 10) as described later.
A mechanical fan 55 is provided on the flow path of the main air supply duct 51, and a humidifier 57 is provided between the air acquisition port 54 and the mechanical fan 55.
As shown in FIG. 8, the main air supply duct 51 is branched into a plurality of branch air supply ducts 52.
The branch air supply duct 52 is opened via the filter 521 in the ceiling of the clean room CR.

In FIG. 7, the air in the clean room CR is circulated through the return duct 53, but as shown in FIG. 9, the air in the clean room CR can be exhausted to the outside from the air discharge port AOUT of the exhaust duct 56. ..

FIG. 10 is a diagram showing a plurality of piezo power generation devices 311 provided in the air acquisition port 54 of the main air supply duct 51 of the clean room.
As shown in FIG. 10, a stay ST is provided inside the air acquisition port of the main air supply duct 51.
A piezo power generation device 311 is attached to this stay ST.

FIG. 11 is an explanatory diagram showing an embodiment in which a piezoelectric / magnetostrictive power generation device used as the power generation device of the present invention is installed in a subway station.
FIG. 11 shows a state in which the power generation device 311 is attached to the ceiling C of the passage space P of the subway station. Since the train ET always creates an air flow, the power generation device 311 can efficiently generate electric power, and various sensing systems can be constructed without routing electric wires.
FIG. 12 is an explanatory diagram showing a piezoelectric / magnetostrictive power generation device used as the power generation device of the present invention, and FIG. 12A shows an example in which a wire rod having a length substantially the same as the coil length is used as the magnetostrictive material. Reference numeral 12 (B) shows an example in which a wire rod sufficiently shorter than the coil length is used as the magnetostrictive material, and the power generation device of the present invention can be configured by using this magnetostrictive / magnetostrictive power generation device 4.
In FIGS. 12A and 12B, the piezoelectric / magnetostrictive power generation device 4 has a flexible flat plate-shaped first electrode 411, a magnetostrictive / magnetostrictive material 412 formed on one side of the first electrode 411, and a magnetostrictive / piezoelectric material. It includes a core 41 made of a second electrode 413 formed on the surface of the material 412, and a coil 42 made of a coil wire wound around the core 41.
In FIGS. 12A and 12B, the magnetostrictive / piezoelectric material 412 is formed by embedding the magnetostrictive fiber F in a PVDF (polyvinylidene fluoride) ferroelectric substance.
The core 41 is connected to a support portion 44, and a pressure receiving portion 43 is formed in the core 41.
The support portion 44 and the pressure receiving portion 43 are made of a non-magnetic material (metal or non-metal material). In FIGS. 12A and 12B, the support portion 44 is attached to the stay ST.
The terminals a1 and a2 are drawn out from the first electrode 411 and the second electrode 413, and the terminals b1 and b2 are drawn out from the coil 42.

3 Environmental information sensing system 4 Piezoelectric / magnetic strain power generation device 11 Main air supply duct 12 Branch air supply duct 21 Main exhaust duct 22 Branch exhaust duct 31 Power generation device 32 Sensor 33 Circuit unit 41 Core 42 Coil 43 Pressure receiving part 44 Support part 51 Main main supply Air duct 52 Branch air supply duct 53 Return duct 54 Air acquisition port 55 Mechanical fan 56 Exhaust duct 57 Humidifier 311 Piezo power generation device 311A Magnetic strain power generation device 331 AC / DC converter 332 regulator 333 Power supply 334 Secondary battery 335 Processor 336 Communication circuit 337 A / D converter 338 antenna 332 regulator 333 power supply 411 1st electrode 412 magnetic strain / piezoelectric material 413 2nd electrode 521 filter 541 filter 334 secondary battery 334
335 Processor 336 Communication Circuit 337 A / D Converter 3111 1st Electrode 3112 Piezo Material (1st Piezo Material)
3113 2nd electrode 3114 Vibration structure 3115 3rd electrode 3116 2nd piezo material 3117 4th electrode 3118 Magnetostrictive metal core 3119 Coil AIN Air inlet AOUT Air outlet ADR Air suction port S Underground facility CS Ceiling space P Passage space M Store space CR clean room SA air shower area ST stay

Claims (2)

A support part with one end fixed to the fluid flow path,
It has a piezoelectric / magnetostrictive power generation device that is connected to this support and receives pressure from a fluid flowing through the flow path to perform piezo power generation and magnetostrictive power generation.
This piezoelectric / magnetostrictive power generation device has a core formed by embedding a magnetostrictive material in a piezo piezoelectric material and attaching electrodes.
The coil wire wound around this core and
The first terminal attached to the electrode and
Including the second terminal attached to the coil wire.
A power generation device that obtains outputs from the first terminal and the second terminal. The power generation device installed at any point in the flow path of the facility and
At least one sensor that detects the environmental information of the facility,
The environmental information sensing system of a facility using the power generation device according to claim 1, further comprising a main body circuit driven by the power generated by the power generation device.

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