Surveillance system

Abstract

To provide a monitoring system which is operated by power supplied from a solar battery to monitor an indoor state of a factory or a warehouse, and has a simpler wiring configuration.SOLUTION: A monitoring system comprising: a plurality of monitoring terminals that are provided separately from facility devices that move or operate in a room of a factory or a warehouse and that monitor conditions in the room; and a power supply device that supplies power to the monitoring terminals, wherein each of the monitoring terminals includes a sensor, a wireless communicator, and a controller, the control unit of the monitoring terminal is configured to transmit information including a sensing result by the sensor to at least one of another monitoring terminal, the facility equipment, and a computer that controls or monitors the facility equipment, by wireless communication by the wireless communication unit, The power supply device includes a solar cell that is disposed in the room and generates power by light from illumination in the room.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a monitoring system that operates on power supplied from a solar cell and monitors the conditions inside a factory or warehouse. [Background technology]

[0002] A monitoring system described in Patent Document 1 has been publicly known in the past, which includes multiple monitoring terminals that are installed separately from the equipment operating in a factory room and monitor the conditions within the room, and a power supply unit that supplies power to the monitoring terminals, wherein the monitoring terminals have sensors, wireless communication units, and control units, and the control units of the monitoring terminals are configured to transmit information including sensing results from the sensors to the equipment via wireless communication via the wireless communication units, and the power supply unit has a solar cell.

[0003] According to the monitoring system described in the above document, the monitoring terminal can be operated using electricity generated by solar cells, eliminating the need to supply power from the power plant to the monitoring terminal, leading to power savings and eliminating the need for wiring for power supply.

[0004] Incidentally, according to the monitoring system of the above-mentioned document, the solar cell is only shown in the block diagram of Figure 2A of the same document, and its detailed configuration is unknown. However, as the name suggests, solar cells are generally installed outdoors so that they generate electricity using sunlight, and in this case, wiring is required to bring the electricity generated by the solar cell into the room. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6983111 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to provide a monitoring system that operates on power supplied from a solar cell and monitors the conditions inside a factory or warehouse, and that has a simpler wiring configuration. [Means for solving the problem]

[0007] In order to solve the above problems, the monitoring system of the present invention comprises a plurality of monitoring terminals that are provided separately from the equipment moving or operating within a room in a factory or warehouse and that monitor the situation within the room, and a power supply unit that supplies power to the monitoring terminals, wherein the monitoring terminals have sensors, wireless communication units, and control units, and the control units of the monitoring terminals are configured to transmit information including the sensing results of the sensors to at least one of the other monitoring terminals, the equipment, and a computer that controls or monitors the equipment via wireless communication via the wireless communication units, and the power supply unit has a solar cell that is placed within the room and generates electricity using light from the lighting within the room.

[0008] The sensor may be configured to sense information used to control the operation or movement of the facility equipment.

[0009] A power supply device may be provided for each of a plurality of monitoring terminals, and the monitoring terminal and the power supply device provided in the monitoring terminal may be unitized to form a monitoring unit.

[0010] The solar cell may have a photoelectric conversion layer containing a perovskite material.

[0011] The computer may be configured to be able to communicate with the facility equipment wirelessly or via wire.

[0012] The computer may further include a power supply device that supplies power to the computer. [Effects of the Invention]

[0013] Since the power is supplied to the monitoring terminal from a solar cell that is placed indoors and generates power using light irradiated from indoor lighting, there is no need for wiring from outside to inside the room to supply power to the monitoring terminal, simplifying the wiring configuration.In addition, since power is generated using light from indoor lighting, there is no need to install a fixed power supply device including a solar cell, and it can be installed on the mobile monitoring terminal.

[0014] Furthermore, the monitoring terminal transmits its sensing results via wireless communication, and even when using unlicensed wireless communication equipment and standards, wireless communication is possible over distances of several hundred meters, eliminating the need for wiring between them, which can significantly reduce installation costs (specifically, the cost of wiring between them). [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic diagram showing a monitoring system to which the present invention is applied; [Figure 2] FIG. 2 is a block diagram showing the configuration of a monitoring unit, facility equipment, and a computer. [Figure 3] FIG. 1 is a cross-sectional side view showing the configuration of a perovskite solar cell. [Figure 4] FIG. 10 is a block diagram showing the configuration of a monitoring unit, facility equipment, and a computer according to another embodiment of the present invention. [Figure 5] FIG. 10 is a block diagram showing the configuration of a monitoring unit, facility equipment, and a computer according to another embodiment of the present invention. [Figure 6] FIG. 10 is a block diagram showing a configuration of a monitoring terminal according to another embodiment of the present invention. [Figure 7] FIG. 10 is a block diagram showing the configuration of a computer according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] FIG. 1 is a schematic diagram showing a monitoring system to which the present invention is applied. The illustrated monitoring system includes multiple monitoring terminals 20 that are provided separately from equipment 10 that moves or operates within a room S of a factory or warehouse and that monitor the status within the room S, and a power supply device 30 that is located within the room S and supplies power to the monitoring terminals 20. A power supply device 30 is provided for each monitoring terminal 20. The monitoring terminals 20 and the power supply devices 30 provided for the monitoring terminals 20 are unitized and configured as a monitoring unit 40. Also located within the room S are a computer 50 for controlling or monitoring the equipment 10, and a light 60 that irradiates light into the room S. Furthermore, the power supply device 30 has a solar cell 31 that generates power using light irradiated from the light 60.

[0017] The equipment 10 performs work such as assembling, processing, or transporting the product P. For example, the equipment 10 operating in the room S is placed on a production line and appropriately assembles or processes the product P carried on the belt conveyor B. On the other hand, the equipment 10 moving in the room S has a moving means such as running wheels 11, and moves while holding the product P, thereby transporting the product P to a predetermined destination. Note that the configuration of the equipment 10 is not limited to the example described above. For example, when the equipment 10 operates in the room S of a warehouse, it may also manage the inventory number of the product P.

[0018] The lighting 60 is a fluorescent lamp placed on the ceiling or upper part of the wall of the room S, and its illuminance is set to, for example, 70 lx to 3000 lx. The lighting 60 is turned on even when no workers are present in the room S. The lighting 60 is not limited to a fluorescent lamp as long as it is configured to emit light with an illuminance that allows the solar cell 31 to generate power. For example, an LED lighting may be used as the lighting 60.

[0019] According to this configuration, the solar cell 31 of the power supply device 30 is installed inside the room S and is capable of generating electricity using light emitted by the lighting 60, and supplies that electricity to the monitoring terminal 20, eliminating the need for wiring from outside the room to the room S and simplifying the wiring configuration.

[0020] The monitoring unit 40 is configured by embedding or attaching a power supply device 30 in a monitoring terminal 20, and multiple monitoring units 40 are installed in the room S. The monitoring unit 40 is, for example, a monitoring camera 40 having an image sensor 20 as the monitoring terminal 20, and captures (senses) images of the movement or operation of the equipment 10 or the status of workers in the room S, and transmits the information to other monitoring units 40, the equipment 10, or the control unit 50. Note that the monitoring unit 40 is not limited to the above example, and may be a sensor unit 40 that senses the status of the product P on the production line, etc.

[0021] The computer 50 is configured with a CPU, memory, etc., and stores programs, etc. used for controlling or monitoring the facility equipment 10. In this example, the computer 50 is a control unit 50 that controls the facility equipment 10. This control unit 50 is housed together with various electronic components in a control panel 70 installed in the room S. In the example shown in the figure, a single control unit 50 is provided in the room S, but a configuration in which multiple control units 50 are provided may also be used.

[0022] Next, the configurations of the monitoring unit 40, the facility device 10, and the computer 50 will be described with reference to FIG.

[0023] 2 is a block diagram showing the configuration of the monitoring unit, facility devices, and computer. As described above, the monitoring unit 40 integrally includes the monitoring terminal 20 and the power supply device 30.

[0024] Monitoring terminal 20 has multiple sensors 21, 21, 21, a control unit 22, a wireless communication unit 23, and a power receiving unit 24. Monitoring terminal 20 also has a monitoring terminal-side circuit, which is an electric circuit including these components. Note that the number of sensors 21 included in monitoring terminal 20 is not limited to three and may be changed as appropriate.

[0025] The sensor 21 is a variety of sensors such as a photoelectric sensor, a distance sensor, a human presence sensor, a temperature sensor, a humidity sensor, a CO2 sensor, or an image sensor, and senses information used to control the operation or movement of the facility equipment 10. Information including the sensing results of the sensor 21 is input to the control unit 22.

[0026] The control unit 22 is composed of a CPU, RAM, etc. The control unit 22 controls sensing by the sensor 21, converts analog information including the sensing result by the sensor 21 into digital information (hereinafter referred to as "sensor information") and transmits it to the wireless communication unit 23, sets at least one of the other monitoring terminals 20, the facility devices 10, or the control unit 50 as a destination when transmitting the sensor information by the wireless communication unit 23, and transmits the sensor information, stores information related to the sensing result in RAM, etc., or controls the distribution of power by the power receiving unit 24, etc.

[0027] The wireless communication unit 23 is wirelessly connected to other monitoring terminals 20, facility devices 10, or control units 50 via the network in the room S, and transmits sensor information to a destination set by the control unit 22. On the other hand, it receives sensor information transmitted from the wireless communication unit 23 of the other monitoring terminals 20, and inputs the information to the control unit 22.

[0028] The power receiving unit 24 is electrically connected to the power supply device 30 and distributes the power supplied from the power supply device 30 to the sensor 21, the control unit 22, or the wireless communication unit 23 via the monitoring terminal side circuit.

[0029] Incidentally, the monitoring terminal 20 is not limited to a configuration having a plurality of sensors 21, and may have a single sensor 21. In this case, the processing load on the control unit 22 and the power consumption by the sensor 21 can be reduced compared to a configuration having a plurality of sensors 21.

[0030] The power supply device 30 has a solar cell 31 configured to be able to generate electricity using light irradiated from the lighting 60, and a DC / DC converter 32 that converts (transforms) the voltage of electricity supplied from the solar cell 31 to the monitoring terminal 20. The electricity transformed by the DC / DC converter 32 is supplied to the power receiving unit 24. The power supply device 30 also has a power supply device side circuit, which is an electric circuit including these components.

[0031] The control unit (computer) 50 has a communication unit 51 that communicates with the monitoring terminal 20 or the equipment 10, a control unit 52 that performs various information processing on the information received by the communication unit 51, and a memory unit 53 that is composed of RAM or ROM or the like and in which predetermined control programs to be executed by the control unit 50 are pre-stored.

[0032] The communication unit 51 is configured to be able to communicate with the wireless communication unit 23 wirelessly, receives sensor information from the wireless communication unit 23, and inputs the information to the control unit 52. The communication unit 51 is also configured to be able to communicate with the facility equipment 10 wirelessly or via a wired connection, and acquires information relating to the movement or operation status of the facility equipment 10 (hereinafter referred to as "equipment information") and inputs the information to the control unit 52.

[0033] Based on the control program, the control unit 52 performs a generation process to generate control information, which is information related to the control of the facility device 10 or the monitoring terminal 20, using the sensor information or device information input from the communication unit 51, or a processing process to process the sensor information or device information into control information. The control information is transmitted to the monitoring terminal 20 or the facility device 10 via the communication unit 51. Note that the control unit 52 may be configured to perform the generation process or processing process using both the sensor information and the device information.

[0034] The storage unit 53 may be configured to store, in addition to the control program, the sensor information received by the communication unit 51, information relating to the sensor information, device information, or the above-mentioned control information. Examples of the information relating to the sensor information include the time when the sensor information was received, information identifying the sensor 21 that detected the sensor information, or the monitoring terminal 20 that transmitted the sensor information, etc.

[0035] The facility equipment 10 has a communication unit 11 that communicates with the monitoring terminal 20 or the control unit 50, a processing execution unit 12 that executes processing based on control information transmitted from the control unit 50 or sensor information transmitted from the wireless communication unit 23, and a memory unit 13 that is composed of RAM or ROM or the like and in which control programs and the like for controlling the operation of the facility equipment 10 are pre-stored.

[0036] The communication unit 11 is configured to be able to communicate with the communication unit 51 wirelessly or via a wired connection, receives control information from the communication unit 51, and inputs the control information to the processing execution unit 12. The communication unit 11 is also configured to be able to communicate with the wireless communication unit 23 wirelessly, receives sensor information from the wireless communication unit 23, and inputs the sensor information to the processing execution unit 12.

[0037] The processing execution unit 12 executes processing according to the control information based on the control program and the control information input from the communication unit 11. As specific processing contents, for example, in the case of a moving equipment 10, processing such as changing the moving route or changing the product P to be transported is performed, and in the case of an operating equipment 10, processing such as changing and adjusting the operating output is performed.

[0038] The storage unit 13 may be configured to store, in addition to the control program, control information received by the communication unit 11, information relating to the control information, sensor information, or information relating to the sensor information.

[0039] Next, the configuration of the solar cell 31 included in the power supply device 30 will be described with reference to FIG.

[0040] 3 is a side cross-sectional view showing the structure of a solar cell. The solar cell 31 shown is a perovskite solar cell 31, and has, from the top surface (light-receiving surface) side, a protective layer 31a, a transparent electrode layer 31b, an electron transport layer 31c, a photoelectric conversion layer 31d, a hole transport layer 31e, and a positive electrode layer 31f.

[0041] The protective layer 31a is made of a film of glass or plastic such as PET, and has gas barrier properties, insulating properties, flexibility, and light transmission properties. When glass is used as the protective layer 31a, it is preferable to use ultra-thin glass formed to a thickness of about 200 μm in order to ensure flexibility.

[0042] The transparent conductive layer (negative electrode layer) 31b is an electrode substrate made of a metal oxide material such as indium tin oxide (ITO) or fluorine-doped tin oxide (FTO), and has light-transmitting properties.

[0043] The electron transport layer 31c is an n-type semiconductor containing a metal oxide such as titanium dioxide (TiO2), zinc oxide (ZnO), or tin oxide (SnO2), and is light-transmitting. The electron transport layer 31c is formed by applying a solution containing a metal oxide to the upper surface of the transparent conductive layer 31b by a method such as spin coating, screen printing, or inkjet printing, or by depositing the solution by a method such as vacuum deposition.

[0044] The photoelectric conversion layer 31d contains a perovskite compound exhibiting photoelectric conversion properties, such as methylammonium lead iodide ((CHNH)Pb1). The perovskite compound is a compound having a perovskite crystal structure represented by the general formula ABX or ABX. In the above general formula, A is a monovalent cation, B is a divalent cation, and X is a monovalent anion. The photoelectric conversion layer 31d is formed (deposited) by applying a solution containing the perovskite compound to the upper surface of the electron transport layer 31c by spin coating, screen printing, inkjet printing, or the like.

[0045] The hole transport layer 31e is a p-type semiconductor containing a triphenylamine-based organic compound material such as Spiro-OMeTAD, and is formed by applying a solution containing the organic compound material to the upper surface of the photoelectric conversion layer 31d by a spin coating method or the like.

[0046] The positive electrode layer 31f is an electrode substrate made of a metal such as silver, gold, aluminum, copper, titanium, or nickel, an alloy containing any of these, or a metal oxide material such as ITO or FTO, and is electrically connected to the transparent conductive layer 31b.

[0047] Light incident from the light-receiving surface side of the solar cell 31 passes through the translucent protective layer 31a, transparent electrode layer 31b, and electron transport layer 31c, and is absorbed by the photoelectric conversion layer 31d. Charge separation occurs within the photoelectric conversion layer 31d that has absorbed the light, generating free electrons and holes. The free electrons move to the transparent electrode layer 31b via the electron transport layer 31c, while the holes move to the positive electrode layer 31f via the hole transport layer 31e. This movement of the free electrons and holes generates photovoltaic power, conducting electricity between the transparent electrode layer 31b (negative electrode) and the positive electrode layer 31f.

[0048] Furthermore, the photoelectric conversion layer 31d can generate electricity by absorbing visible light with a wavelength of 300 nm to 800 nm, and by appropriately selecting the composition ratio and type of the perovskite compound used to form the layer 31d or the content of the perovskite compound in the solution, the power generation efficiency in a predetermined wavelength band can be improved. This allows the solar cell 31 to generate power with improved power generation efficiency at the wavelength of light irradiated by lighting.

[0049] According to this configuration, the monitoring device 20 is operated by generating power using light with low illuminance, thereby enabling stable operation of the monitoring system.

[0050] The solar cell 31 is not limited to the above example, and may have any configuration as long as it can generate electricity using light irradiated by the lighting 60. For example, the solar cell 31 may be an organic thin-film solar cell. In this case, the solar cell 31 can be manufactured more easily than a perovskite solar cell.

[0051] The solar cell 31 may also be a tandem solar cell in which a photoelectric conversion layer configured to be capable of absorbing visible light in a wavelength band different from that of the photoelectric conversion layer 31d and generating electricity is further provided below the positive electrode layer 31f, and an electrode layer is provided below the photoelectric conversion layer. In this case, it is preferable to use a perovskite-type photoelectric conversion layer, a silicon (Si)-based photoelectric conversion layer, or a CIGS-based photoelectric conversion layer containing copper (Cu), indium (In), gallium (Ga), and selenium (Se) as the different photoelectric conversion layer.

[0052] Next, with reference to FIG. 4, another embodiment of the present invention will be described with reference to the differences from the above embodiment.

[0053] FIG. 4 is a block diagram showing the configuration of a monitoring unit, facility equipment, and computer according to another embodiment of the present invention.

[0054] The monitoring system according to the above-described embodiment is configured to include the facility equipment 10 and the control unit 50 separately, but the monitoring system according to the present embodiment is configured to include the facility equipment 10 and a control unit (computer) 50 that is provided integrally with the facility equipment 10. In this case, a control unit 50 that controls the facility equipment 10 may be provided for each of the plurality of facility equipment 10.

[0055] This configuration prevents communication failures due to interference with radio waves emitted by other equipment 10, the monitoring terminal 20, or various communication devices brought into the room S, and enables the equipment 10 to receive control information and the control unit 50 to acquire equipment information more quickly and accurately.

[0056] Next, with reference to FIG. 5, another embodiment of the present invention will be described with reference to the differences from the above embodiment.

[0057] FIG. 5 is a block diagram showing the configuration of a monitoring unit, facility equipment, and computer according to another embodiment of the present invention.

[0058] The monitoring system according to the above-described embodiment includes a plurality of monitoring terminals 10 and a power supply device 30 that supplies power to the monitoring terminals 10, with a power supply device 30 provided for each monitoring terminal 10. However, the monitoring system according to the present embodiment further includes a power supply device 30' that supplies power to a control unit (computer) 50, and the control unit 50 has a power receiving unit 56 that distributes the power supplied from the power supply device 30' to a communication unit 51, a signal processing unit 52, and a storage unit 53. Like the power supply device 30 included in the monitoring unit 40, the power supply device 30' included in the control unit 50 includes a solar cell 31' and a DC / DC converter 32'.

[0059] Furthermore, while the control unit 50 in the above-described embodiment was stored inside the control panel 70 installed in the room S, the control unit 50 in this embodiment is placed in a predetermined location where light irradiated from the lighting 60 in the room S reaches.

[0060] According to this configuration, electricity is generated by the lighting 60 in the room S to supply the power necessary to operate the control unit 50, thereby reducing the cost of using external electricity compared to a configuration that only has a power supply unit 30 that supplies power to the monitoring terminal 20.

[0061] Next, with reference to FIG. 6, another embodiment of the present invention will be described with reference to the differences from the above embodiment.

[0062] FIG. 6 is a block diagram showing the configuration of a monitoring terminal according to another embodiment of the present invention.

[0063] The monitoring terminal 20 in the above-described embodiment was a sensor unit 20 equipped with a plurality of sensors 21, a control unit 22, a wireless communication unit 23, and a power receiving unit 24, but the monitoring terminal 20 in this embodiment has a PLC (Programmable Logic Controller) 25 equipped with the control unit 22, the wireless communication unit 23, and the power receiving unit 24, and a plurality of sensors 21, 21, 21 connected from outside to the control unit 22 of the PLC 25.

[0064] According to this configuration, since the monitoring terminal 20 has the PLC 25, the processing executed by the control unit 22 can be changed by changing the program, which makes it easy to maintain and highly versatile.

[0065] 6, the wireless communication unit 23 may be provided separately from the monitoring terminal 20 and connected to the control unit 22 of the PLC 25 via a wired connection from outside the PLC 25. In this case, the wireless communication unit 23 and the PLC 25 are connected via a wired connection using various cables capable of transmitting Ethernet signals, such as optical fiber or a LAN cable. From the viewpoints of transmission distance and cost, it is desirable to use a twisted pair cable as the LAN cable. This allows the wireless communication unit 23 to be independently relocated, and for example, it can be positioned to avoid obstructions that may interfere with the wireless communication of the wireless communication unit 23.

[0066] Next, with reference to FIG. 7, another embodiment of the present invention will be described with reference to the differences from the above embodiment.

[0067] FIG. 7 is a block diagram showing the configuration of a computer according to another embodiment of the present invention.

[0068] The computer 50 according to this embodiment is configured to control or monitor the facility equipment 10, and the computer 50 may be, for example, a tablet, a regular home PC, or an industrial PC (IPC).

[0069] The computer 50 is equipped with a wired or wireless communication interface 51 that enables communication using a general-purpose protocol such as TCP / IP, a control unit 52 that is composed of a CPU, RAM, etc. and can implement various functions by executing programs, a memory unit 53 that includes RAM and storage such as an SSD or HDD, an input interface 55 such as a keyboard, mouse, or touch panel for inputting information, and an output interface 56 such as a monitor, printer, or speaker for outputting information.

[0070] The control unit 52 has at least an equipment information acquisition processing unit 52a that executes processing to acquire the above-mentioned equipment information by communicating with the facility equipment 10 via the communication interface 51, a sensor information acquisition processing unit 52b that executes processing to acquire the above-mentioned sensor information by communicating with the monitoring terminal 20 via the communication interface 51, an information processing / generation processing unit 52c that executes the above-mentioned processing processing or generation processing, and an information provision processing unit 52d that executes processing to transmit and provide the above-mentioned control information to the facility equipment 10 or the monitoring terminal 20.

[0071] In addition to the above-mentioned processing and generation processing, the information processing / generation processing unit 52c processes the equipment information or sensor information into information that can be easily checked by factory or warehouse workers, etc. More specifically, it processes the equipment information or sensor information into information in a table format, etc., organized for each facility device 10 or monitoring terminal 20 that sent it.

[0072] The information processed in this manner is displayed in a visible manner on a monitor, touch panel, or the like, which is the output interface 56. This allows the computer 50 to monitor the operating status and operational status of the facility devices 10 and the monitoring terminal 20.

[0073] The storage unit 53 has at least a device information storage area 53a, which is a storage area in which the above-mentioned device information is stored, and a sensor information storage area 53b, which is a storage area in which the above-mentioned sensor information is stored.

[0074] As shown by the phantom line in FIG. 7, the computer 50 may be configured to be connected to a communication interface 51 used for communication using a communication protocol such as PRC or infrared communication.

[0075] Although the power supply device 30 is embedded in or attached to the monitoring terminal 20 to form an integrated monitoring unit 40, the configuration is not limited to the above, and any configuration may be used as long as the monitoring terminal 20 is operated by power supplied from the power supply device 30. For example, the power supply device 30 and the monitoring terminal 20 may be provided separately, and the power supply device 30 may be supported by a support attached to the monitoring terminal 20 so that it can be rotated up and down or left and right. In this case, by rotating the power supply device 30 and orienting the light receiving surface of the solar cell 31 toward the light 60, power generation efficiency can be improved.

[0076] Furthermore, in the above example, the wireless communication unit 23 of the monitoring terminal 20 is configured to directly perform wireless communication with the wireless communication unit 23 of another monitoring terminal 20, the facility equipment 10, or the computer 50, but a repeater or relay station may be provided, and wireless communication may be performed with another monitoring terminal 20, the facility equipment 10 (communication unit 11), or the computer 50 (communication unit 53) via the repeater or relay station. This makes it possible to extend the distance over which wireless communication is possible, which is a great advantage when constructing this monitoring system in, for example, a large room S.

[0077] Furthermore, by providing a gateway device or the like as a relay device, wireless communication can be performed even if the communication units 11, 23, and 51 use different communication standards. [Explanation of symbols]

[0078] 10 Equipment 20 Monitoring terminal 21 Sensors 22 Control Unit 23 Radio Communication Department 30 Power supply 30´ power supply 31 Solar Cell 31d Photoelectric conversion layer 40 Monitoring Unit 50 Control Unit (Computer) 60 Lighting

Claims

1. a plurality of monitoring terminals that are provided separately from the equipment that moves or operates in a room of a factory or warehouse and that monitor the situation in the room; a power supply device that supplies power to the monitoring terminal; the monitoring terminal has a sensor, a wireless communication unit, and a control unit; the control unit of the monitoring terminal is configured to transmit information including a sensing result by the sensor to at least one of the other monitoring terminals, the facility devices, and a computer that controls or monitors the facility devices via wireless communication by the wireless communication unit; The power supply device includes a solar cell that is disposed in the room and generates electricity using light from lighting in the room. A monitoring system characterized by:

2. The sensor is configured to sense information used to control the operation or movement of the facility equipment. The monitoring system of claim 1 .

3. the power supply device is provided for each of the plurality of monitoring terminals, The monitoring terminal and the power supply device provided in the monitoring terminal are unitized to form a monitoring unit. The monitoring system of claim 1 .

4. The solar cell has a photoelectric conversion layer containing a perovskite material. The monitoring system of claim 1 .

5. The computer is configured to be able to communicate with the facility equipment wirelessly or via wire. The monitoring system of claim 1 .

6. The power supply device supplies power to the computer. The monitoring system of claim 1 .

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