Equipment Control System

Abstract

To provide an equipment control system capable of reducing the required capacity of a battery unit that supplies the power to power supply unit in the event of a power failure.SOLUTION: An equipment control system 10 includes: a power supply unit 20 that has multiple devices to be supplied with the power and multiple connection ports 21 that supplies the power to the multiple devices to be supplied with the power via multiple connection ports 21; and a battery unit 90 that supply the electric power to the power supply unit 20 in the event of a power failure. The power supply unit 20 is configured, in the event of a power failure, to reduce the number of the devices to be supplied with the power by the power supply unit 20 to be fewer than the number of the devices to which the power supply unit 20 normally supplies the power.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention is a PoE (Power over This paper relates to a device control system based on Ethernet (registered trademark). [Background technology]

[0002] PoE is a technology that allows a power supply device to send and receive data and supply power to a power receiving device in parallel through a standard cable that complies with the Ethernet (registered trademark) standard. By using PoE, it is possible to install a power receiving device even in a place where it is difficult to secure a power source, and it is also possible to reduce the cost related to the power wiring. In recent years, the power that can be supplied by PoE has been increased, and the range of devices that can be used as power receiving devices is expanding. Patent Document 1 discloses technology related to PoE. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6693002 Summary of the Invention [Problem to be solved by the invention]

[0004] In the power supply from a power supply device to a power receiving device in a PoE system, a battery was used to supply power to the power supply device during a power outage in order to shorten the time it takes for the power receiving device to recover and to correct variations in the timing of the recovery of the power receiving device. However, there was an issue with the large battery capacity required.

[0005] The present invention provides an equipment control system that can reduce the required capacity of a battery that supplies power to a power supply equipment during a power outage. [Means for solving the problem]

[0006] An equipment control system according to one embodiment of the present invention includes a plurality of power receiving devices, a power supplying device having a plurality of connection ports and supplying power to the plurality of power receiving devices through the plurality of connection ports, and a battery device that supplies power to the power supplying device when a power supply is interrupted, wherein the power supplying device reduces the number of the power receiving devices to which the power supplying device supplies power when a power supply is interrupted from the number of the power receiving devices to which the power supplying device supplies power under normal circumstances. Effect of the Invention

[0007] The device control system of the present invention can reduce the required capacity of the battery that supplies power to the power supply device during a power outage. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a functional configuration of a device control system according to an embodiment. [Diagram 2] FIG. 2 is a flowchart of an operation example of the device control system according to the embodiment. [Diagram 3] FIG. 3 is a flowchart showing the operation of the control unit 22 to determine whether or not a power interruption has occurred. [Figure 4] FIG. 4 is a flowchart illustrating an example of an operation of selecting a power receiving device based on device information in the device control system according to the embodiment. [Diagram 5] FIG. 5 is a flowchart showing an example of an operation of selecting a power receiving device based on the priority order in the device control system according to the embodiment. [Figure 6] FIG. 6 is a flowchart showing an operation of changing the dimming level of a power receiving device depending on the remaining charge level of the battery device. [Figure 7] FIG. 7 is a flowchart showing the operation of changing the dimming level of the power receiving device depending on the power cut-off time. [Figure 8] FIG. 8 is a flowchart showing the operation of changing the number of power receiving devices depending on the remaining charge of the battery device. [Figure 9] FIG. 9 is a flowchart showing the operation of changing the number of power receiving devices depending on the power cutoff time. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiments will be described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component arrangement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. In addition, among the components in the following embodiments, components that are not described in the independent claims will be described as optional components.

[0010] In addition, each drawing is a schematic diagram and is not necessarily a precise illustration. In each drawing, the same reference numerals are used for substantially the same configurations, and duplicated explanations may be omitted or simplified.

[0011] (Embodiment 1) [composition] First, an overview of a device control system according to an embodiment will be described below. Fig. 1 is a block diagram showing a functional configuration of the device control system according to an embodiment.

[0012] The device control system 10 according to the embodiment is a PoE system (PoE-based system) that controls target devices using the PoE mechanism. The device control system 10 includes a power supply device 20 (PSE: Power Sourcing Equipment), one or more power receiving devices (PD: Powered Devices), and a battery device 90. The power receiving devices are devices having a PD interface, and in FIG. 1, the lighting device 30, the disaster prevention device 40, the camera 50, and the air conditioning device 60 each correspond to a power receiving device. The power receiving devices may be audio devices (speakers), video devices, wireless devices, sensors, user interface devices, or the like.

[0013] The power supply device 20 includes a plurality of connection ports 21, a control unit 22, a storage unit 23, and a detection unit 24. The plurality of connection ports 21 are connection structures (connectors) to which standard cables 70 conforming to the Ethernet (registered trademark) standard are connected. Specifically, the standard cables 70 are so-called LAN (Local Area Network) cables or the like. The power receiving devices are electrically connected to the connection ports 21 via the standard cables 70. The power receiving devices (lighting devices 30, disaster prevention devices 40, cameras 50, and air conditioning devices 60) can receive power from the power supply device 20 via the standard cables 70 and can communicate with the power supply device 20 via the standard cables 70.

[0014] The control unit 22 supplies power to the power receiving device connected to the connection port 21. The control unit 22 also controls the power receiving device connected to the connection port 21 by transmitting a control signal to the power receiving device via the standard cable 70. The control unit 22 is specifically realized by a microcomputer or a processor, and is built into the power supply device 20. The functions of the control unit 22 are realized, for example, by the microcomputer or processor constituting the control unit 22 executing a computer program stored in the storage unit 23.

[0015] The storage unit 23 is a storage device that stores the computer programs and various information necessary for controlling the power receiving device, etc. The storage unit 23 is realized by, for example, a semiconductor memory.

[0016] The detector 24 detects whether the power supplied to the power supply device 20 is DC power or AC power.

[0017] The lighting device 30 operates by receiving power supply from the power supply device 20. The lighting device 30 is, for example, a lighting device that illuminates an indoor space, and more specifically, is a base light, a system ceiling light, a down light, a spot light, or an emergency light. The specific embodiment of the lighting device 30 is not particularly limited. The device control system 10 includes one lighting device 30, but may include two or more lighting devices 30. The lighting device 30 includes a light-emitting element 31 and a light-emission control unit 32.

[0018] The light emitting element 31 constitutes a light source of the lighting device 30. The light emitting element 31 is, for example, an LED (Light Emitting Diode) or an organic EL (Electro Luminescence) element.

[0019] The light-emission control unit 32 converts the power supplied from the power supply device 20 into power suitable for the light emission of the light-emitting element 31, and supplies the converted power to the light-emitting element 31. Specifically, the light-emission control unit 32 applies a voltage to the light-emitting element 31. The light-emission control unit 32 is realized by a DC-DC converter circuit or the like.

[0020] The disaster prevention device 40 includes a sensor 41 and a detection control unit 42. The detection control unit 42 is a processor that operates by receiving power supply from the power supply device 20. The detection control unit 42 may include a communication circuit. The detection control unit 42 receives a signal from the power supply device 20 and operates based on the received signal. In addition, the sensor 41 transmits a detected signal to the detection control unit 42. The detection control unit 42 performs an operation of detecting an object through the sensor 41. The detection control unit 42 may communicate with the power supply device 20.

[0021] The camera 50 includes an imaging element 51 and an imaging control unit 52. The imaging element 51 converts light into an electrical signal by photoelectric conversion due to the photoelectric effect, thereby converting an image into an electrical signal. The imaging control unit 52 is a processor that operates by receiving power supply from the power supply device 20. The imaging control unit 52 may include a communication circuit. The imaging control unit 52 receives a signal from the power supply device 20 and operates based on the received signal. The imaging control unit 52 captures an image of a target through the imaging element 51. The imaging control unit 52 may communicate with the power supply device 20.

[0022] The air conditioning equipment 60 includes an air conditioning control unit 62 and a heat exchanger 61. The heat exchanger 61 removes hot or cold heat from the outside air by bringing the taken-in outside air into contact with a refrigerant, and generates air whose temperature and humidity have been adjusted. The air conditioning control unit 62 is a processor that operates by receiving power supply from the power supply equipment 20. The air conditioning control unit 62 may include a communication circuit. The air conditioning control unit 62 receives a signal from the power supply equipment 20 and operates based on the received signal. The air conditioning control unit 62 generates air whose temperature and humidity have been adjusted through the heat exchanger 61. The air conditioning control unit 62 may communicate with the power supply equipment 20.

[0023] The battery device 90 includes a battery 91, a discharge control unit 92, and a battery detection unit 93. The battery 91 is a secondary battery that is charged before use. The battery 91 is, for example, a lithium ion battery, but may be a nickel-metal hydride battery. The battery 91 includes an electrode and an active material. The battery 91 may include an electrolyte instead of the active material. The discharge control unit 92 performs control so as to supply power to the power supply device 20 when the power supply is cut off. The battery detection unit 93 detects that the power supplied to the battery device 90 from the system power supply has been cut off.

[0024] The battery device 90, during normal operation (when the system power supply is not interrupted), receives AC power from the system power supply and supplies the received AC power to the power supply device 20. At the same time, the battery device 90 charges a battery 91 provided in the battery device 90 with the AC power received from the system power supply.

[0025] On the other hand, when the power supply is cut off (when the system power supply is cut off), the battery device 90 supplies the DC power that has been charged in the battery 91 to the power supply equipment 20 by discharging the battery 91.

[0026] [Example] Next, an operation example of the device control system 10 will be described. Fig. 2 is a flowchart of an operation example of the device control system 10 according to the embodiment. In the device control system 10, the power supply device 20 supplies power to each of a plurality of power receiving devices. When the power supply that supplies power to the power supply device 20 is cut off (hereinafter, referred to as power cut-off), the power supply device 20 receives power supply from the battery device 90. However, when there are many power receiving devices to which the power supply device 20 supplies power, there is a problem that the capacity of the battery device 90 must be made larger.

[0027] Therefore, in the device control system 10, the power supply device 20 reduces the number of power receiving devices to which it supplies power when the power supply is cut off. This allows the device control system 10 to supply power to the power supply device 20 using a battery device 90 with a smaller capacity than before.

[0028] First, the power supply device 20 determines whether a power supply interruption has occurred (step S100). Here, a power supply interruption refers to a power supply system or the like that supplies power to the power supply device 20 being interrupted. For example, the power supply device 20 determines whether a power supply interruption has occurred as follows. The battery detection unit 93 of the battery device 90 determines whether a power supply interruption to the battery device 90 has occurred. When the battery detection unit 93 determines that a power supply interruption has occurred, the discharge control unit 92 supplies DC power to the power supply device 20 by discharging the battery 91. The detection unit 24 of the power supply device 20 detects that DC power has been supplied to the power supply device 20. When the detection unit 24 of the power supply device 20 detects that DC power has been supplied to the power supply device 20, the control unit 22 of the power supply device 20 determines that a power supply interruption has occurred.

[0029] Next, the power supply device 20 receives power supply from the battery device 90 (step S101).

[0030] Next, the control unit 22 reduces the number of power receiving devices to which power is supplied (step S102). At this time, the control unit 22 may select the lighting device 30 as the power receiving device to which power is supplied.

[0031] [Power interruption detection] Next, the above-mentioned operation of the control unit 22 to determine whether or not a power interruption has occurred will be described below. Fig. 3 is a flowchart showing the operation of the control unit 22 to determine whether or not a power interruption has occurred.

[0032] When the power supply device 20 receives power supply, the control unit 22 performs the following operations.

[0033] First, the control unit 22 determines whether or not a direct current is detected (step S200). That is, the control unit 22 determines whether or not the current supplied as the power supply is a direct current. For example, the control unit 22 may determine whether the current supplied as the power supply is a direct current or an alternating current.

[0034] When the control unit 22 determines that the current supplied with power is a direct current (Yes in step S200), the control unit 22 determines that a power cutoff has occurred (step S201). That is, the control unit 22 determines that the power supply to the control unit 22 is not the system power supply but the battery device 90, and determines that the system power supply has been cut off.

[0035] When the control unit 22 determines that the current supplied with power is not a direct current (No in step S200), the control unit 22 determines that a power cutoff has not occurred (step S202). In other words, the control unit 22 determines that the power supply to the control unit 22 is not supplied from the battery device 90 but from the system power supply, and determines that the system power supply has not been cut off.

[0036] Also, for example, when a power cutoff occurs, the control unit 22 may receive power from the battery device 90 and also receive a signal from the battery device 90 indicating that the battery device 90 is supplying power, and determine that a power cutoff has occurred based on the received signal. When a power cutoff has not occurred, the control unit 22 may not receive power from the battery device 90 and may not receive a signal from the battery device 90 indicating that the battery device 90 is supplying power, and may determine that a power cutoff has not occurred based on the fact that the signal has not been received. When a power cutoff has not occurred, the control unit 22 may receive a signal from the battery device 90 indicating that the battery device 90 is not supplying power, and determine that a power cutoff has not occurred based on the received signal.

[0037] [Details on selecting power receiving device] Next, an operation of the power supply device 20 reading device information and supplying power to the power receiving device when the power supply is cut off will be described. Fig. 4 is a flowchart showing an example of an operation of selecting a power receiving device based on device information in the device control system 10 according to the embodiment.

[0038] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0039] First, the control unit 22 reads the device information stored in each of the power receiving devices from each of the power receiving devices (step S300). Here, the device information is information indicating the power consumption of each of the power receiving devices. The control unit 22 may read the device information from the power receiving devices before the power receiving devices are started, while the power receiving devices are starting, or when the battery device 90 is starting. Here, "before the power receiving devices are started" refers to a state in which the power receiving devices are not operating but are energized. Also, "when the battery device 90 is started" refers to a state in which the battery device 90 is started and the power receiving devices are energized.

[0040] Next, the control unit 22 selects a power receiving device to which power is to be supplied in accordance with the device information (step S301). At this time, the control unit 22 selects the power receiving device such that the sum of the power consumptions of the multiple power receiving devices calculated from the multiple device information is smaller than the sum of the power consumptions of the power receiving devices that supplied power in normal times (when no power interruption occurs). Here, the control unit 22 may select the lighting device 30 as the power receiving device to which power is to be supplied. For example, the control unit 22 may select an emergency light that does not supply power (does not light up) when the power supply is energized and the power supply is not interrupted, as the power receiving device to which power is to be supplied in the event of a power interruption.

[0041] Next, an operation of the control unit 22 reading the priority order and supplying power to the power receiving devices when the power is cut off will be described. Fig. 5 is a flowchart showing an example of an operation of selecting a power receiving device based on the priority order in the device control system 10 according to the embodiment.

[0042] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0043] First, the control unit 22 reads the priority order stored in each of the power receiving devices from each of the power receiving devices (step S400). Here, the priority order may be a rank assigned to the multiple power receiving devices in sequence, or a numerical value indicating the importance assigned independently to each of the multiple power receiving devices. At this time, the control unit 22 selects some of the multiple power receiving devices according to the priority order. (Step S401) The control unit 22 may select the power receiving devices according to the priority order so that the number of power receiving devices to which power is supplied during a power interruption is reduced from the number of power receiving devices to which power is supplied during normal times (when no power interruption has occurred).

[0044] [Change dimming ratio] Next, an operation of the control unit 22 determining the remaining charge of the battery device 90 and changing the dimming level of the power receiving device when the power is cut off will be described. Fig. 6 is a flowchart showing the operation of changing the dimming level of the power receiving device depending on the remaining charge of the battery device 90.

[0045] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0046] First, the control unit 22 determines the remaining charge of the battery device 90 (step S500). At this time, the control unit 22 may determine whether the remaining charge of the battery device 90 is equal to or less than a threshold. In this case, there may be multiple thresholds, and the control unit 22 may determine the remaining charge of the battery device 90 in multiple stages.

[0047] Next, the control unit 22 changes the dimming level of the power receiving device according to the remaining charge of the battery device 90 (step S501). At this time, the power receiving device is the lighting device 30. When the remaining charge of the battery device 90 is lower than a threshold, the control unit 22 may lower the dimming level of the lighting device 30, which is the power receiving device, than usual (reduce the dimming level). When the control unit 22 determines the remaining charge of the battery device 90 in multiple stages, the control unit 22 may lower the dimming level of the lighting device 30, which is the power receiving device, (reduce the dimming level) as the remaining charge becomes lower.

[0048] Next, an operation of control unit 22 determining the duration of power interruption and changing the dimming level of the power receiving device when the power is interrupted will be described. Fig. 7 is a flowchart showing the operation of changing the dimming level of the power receiving device depending on the power interruption duration.

[0049] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0050] First, the control unit 22 determines how long the power-off duration, which is the time during which the power-off continues, has continued (step S600). At this time, the control unit 22 may determine whether the power-off duration is equal to or greater than a threshold. In this case, there may be multiple thresholds, and the control unit 22 may determine the length of the power-off duration in multiple stages.

[0051] Next, the control unit 22 changes the dimming level of the power receiving device according to the length of the power cut-off time (step S601). At this time, the power receiving device is the lighting device 30. When the power cut-off time is longer than the threshold, the control unit 22 may reduce the dimming level of the lighting device 30, which is the power receiving device, compared to normal (reduce the dimming level). When the control unit 22 determines the length of the power cut-off time in multiple stages, the control unit 22 may reduce the dimming level of the lighting device 30, which is the power receiving device, (reduce the dimming level) the longer the power cut-off time is.

[0052] [Reduction of power receiving devices] Next, an operation of the control unit 22 determining the remaining charge of the battery device 90 and changing the number of power receiving devices when the power is cut off will be described. Fig. 8 is a flowchart showing the operation of changing the number of power receiving devices depending on the remaining charge of the battery device 90.

[0053] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0054] First, the control unit 22 determines whether the remaining charge of the battery device 90 is equal to or less than a predetermined value (step S700).

[0055] When the control unit 22 determines that the remaining charge of the battery device 90 is equal to or less than a predetermined value (Yes in step S700), the control unit 22 reduces the number of power receiving devices to which power is supplied (step S701). In this case, the control unit 22 may further reduce the number of power receiving devices to which power is supplied from the number of power receiving devices to which power is supplied that was reduced when the power supply was cut off.

[0056] When the control unit 22 determines that the remaining charge of the battery device 90 is not equal to or less than a predetermined value (No in step S700), the control unit 22 maintains the number of power receiving devices to which it supplies power (step S702). Here, maintaining refers to supplying power during power interruption to the same number of power receiving devices as the number of power receiving devices to which the control unit 22 supplies power during normal times (when no power interruption has occurred). The control unit 22 may supply power during power interruption to the same power receiving devices as the power receiving devices to which it supplies power during normal times (when no power interruption has occurred).

[0057] The control unit 22 may determine in multiple stages whether the remaining charge of the battery device 90 is below a predetermined value, and in that case, the number of power receiving devices to which power is supplied may be reduced in multiple stages according to the remaining charge of the battery device 90.

[0058] Next, an operation of the control unit 22 determining the power cut-off time and changing the number of power receiving devices when the power is cut off will be described. Fig. 9 is a flowchart showing the operation of changing the number of power receiving devices depending on the power cut-off time.

[0059] When the control unit 22 determines that a power interruption has occurred, it performs the following operations.

[0060] First, the control unit 22 determines whether the power supply cut-off time is equal to or longer than a predetermined value (step S800).

[0061] When the control unit 22 determines that the power interruption time is equal to or longer than the predetermined value (Yes in step S800), the control unit 22 reduces the number of power receiving devices to which power is supplied (step S801). In this case, the control unit 22 may further reduce the number of power receiving devices to which power is supplied from the number of power receiving devices to which power was supplied reduced when the power was interrupted.

[0062] When the control unit 22 determines that the power interruption time is not equal to or longer than a predetermined value (No in step S800), the control unit 22 maintains the number of power receiving devices to which power is supplied (step S802). Here, maintaining means that the control unit 22 supplies power to the same number of power receiving devices during power interruption as the number of power receiving devices to which the control unit 22 supplies power during normal times (when no power interruption has occurred). The control unit 22 may supply power during power interruption to the same power receiving devices as the power receiving devices to which the control unit 22 supplies power during normal times (when no power interruption has occurred).

[0063] The control unit 22 may determine in multiple stages whether the power-off time is equal to or greater than a predetermined value, and in that case, may reduce the number of power receiving devices to which power is supplied in multiple stages according to the length of the power-off time.

[0064] [Effects, etc.] The device control system 10 of the present disclosure includes a plurality of power receiving devices, a power supplying device 20 having a plurality of connection ports 21 and supplying power to the plurality of power receiving devices through the plurality of connection ports 21, and a battery device 90 that supplies power to the power supplying device 20 when power is interrupted, and the power supplying device 20 reduces the number of power receiving devices to which the power supplying device 20 supplies power when power is interrupted from the number of power receiving devices to which the power supplying device 20 supplies power under normal circumstances.

[0065] As a result, the device control system 10 of the present disclosure can limit the number of devices to which the power supply device 20 supplies power when the power supply device 20 is shut off. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power supply device is shut off.

[0066] Furthermore, for example, in the device control system 10 of the present disclosure, at least one power receiving device to which the power supply device 20 supplies power during a power cutoff is the lighting device 30.

[0067] As a result, the device control system 10 of the present disclosure can turn on the lighting devices 30 while limiting the number of devices to which power is supplied during power interruption. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 during power interruption.

[0068] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 reads device information indicating the power consumption of each of the multiple power receiving devices, which is stored in each of the power receiving devices, from each of the power receiving devices, and selects a power receiving device to supply power to when the power is cut off, based on the device information.

[0069] In this way, the device control system 10 of the present disclosure can adjust the total power consumption of the power receiving devices and select a device to supply power to when the power supply is interrupted. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power supply is interrupted.

[0070] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 reads device information from the power receiving device before the power receiving device is started, while the power receiving device is being started, or when the battery device 90 is started.

[0071] This allows the device control system 10 of the present disclosure to read device information from the power receiving device at various times.

[0072] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 selects a power receiving device to which power is supplied when the power supply is cut off, based on the priority order preset for each of the multiple power receiving devices.

[0073] As a result, the device control system 10 of the present disclosure can supply power only to the power receiving device of high importance when the power supply is interrupted. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power supply is interrupted.

[0074] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 changes the dimming level of the selected power receiving device in accordance with the remaining charge level of the battery device 90.

[0075] As a result, the device control system 10 of the present disclosure can adjust the power consumption of the power receiving device when the power is cut off according to the remaining charge of the battery device 90. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power is cut off.

[0076] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 changes the dimming level of the selected power receiving device depending on the duration of the power supply interruption.

[0077] As a result, the device control system 10 of the present disclosure can adjust the power consumption of the power receiving device according to the power interruption time when the power is interrupted. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power is interrupted.

[0078] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 further reduces the number of selected power receiving devices in accordance with the remaining charge of the battery device 90.

[0079] As a result, the device control system 10 of the present disclosure can adjust the number of power receiving devices when the power is cut off according to the remaining charge of the battery device 90. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power is cut off.

[0080] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 further reduces the number of selected power receiving devices depending on the duration of the power supply interruption.

[0081] As a result, the device control system 10 of the present disclosure can adjust the number of power receiving devices according to the power interruption time when the power is interrupted. Therefore, the device control system 10 of the present disclosure can reduce the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power is interrupted.

[0082] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 determines that a power supply cutoff has occurred based on a signal transmitted from the battery device 90.

[0083] This allows the device control system 10 of the present disclosure to accurately determine whether or not a power cut has occurred.

[0084] Also, for example, in the device control system 10 of the present disclosure, the power supply device 20 determines that a power supply interruption has occurred based on whether the current detected by the power supply device 20 is AC or DC.

[0085] This allows the device control system 10 of the present disclosure to determine whether or not a power interruption has occurred without sending or receiving any signals.

[0086] Also, for example, in the device control system 10 of the present disclosure, when the power supply device 20 detects a power interruption, the power supply device 20 selects an emergency light that is not turned on when the power supply is energized as a power receiving device to which the power supply device 20 supplies power.

[0087] As a result, the device control system 10 of the present disclosure can turn on the emergency lighting when the power supply is interrupted. Therefore, the device control system 10 of the present disclosure can ensure safety while reducing the required capacity of the battery device 90 that supplies power to the power supply device 20 when the power supply is interrupted.

[0088] For example, in the device control system 10 of the present disclosure, the lighting device 30 is a base light, a system ceiling light, a downlight, or a spotlight.

[0089] This allows the device control system 10 of the present disclosure to be equipped with a variety of lighting devices 30.

[0090] Further, for example, in the device control system 10 of the present disclosure, the power receiving device is an air conditioner, a camera, a speaker, a disaster prevention device, a sensor, a wireless device, or a user interface device.

[0091] This allows the device control system 10 of the present disclosure to be equipped with a variety of devices.

[0092] (Other embodiments) Although the embodiment has been described above, the present invention is not limited to the above embodiment.

[0093] For example, in the above embodiment, the device control system is realized by a plurality of devices, but may be realized as a single device. For example, the device control system may be realized as a single device corresponding to a power supply device, or may be realized as a single device corresponding to a power receiving device (such as a wireless device or a lighting device). When the device control system is realized by a plurality of devices, the components of the device control system described in the above embodiment may be distributed in any manner among the plurality of devices.

[0094] In the above embodiment, the processes executed by a specific processing unit may be executed by another processing unit. The order of multiple processes may be changed, or multiple processes may be executed in parallel.

[0095] In the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

[0096] Furthermore, each component may be realized by hardware. Each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.

[0097] Furthermore, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, or may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0098] For example, the present invention may be realized as the power supply device or the power receiving device of the above-mentioned embodiment. Also, the present invention may be realized as a control method of the device control system of the above-mentioned embodiment. The present invention may be realized as a program for causing a computer to execute such a control method, or as a computer-readable non-transitory recording medium on which such a program is recorded.

[0099] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0100] 10. Equipment Control System 20 Power supply equipment 30 Lighting equipment 40 Disaster prevention equipment 50 Camera 60 Air conditioning equipment 90 Battery Equipment

Claims

1. A plurality of power receiving devices; a power supply device having a plurality of connection ports and supplying power to the plurality of power receiving devices through the plurality of connection ports; a battery device that supplies power to the power supply device when a power source is cut off; The power supply device includes: determining whether a predetermined condition regarding the duration of the power interruption is satisfied at the time of the power interruption; When it is determined that the predetermined condition is satisfied, the number of the power receiving devices to which the power supplying device supplies power is reduced from the number of the power receiving devices to which the power supplying device supplies power under normal circumstances; When it is determined that the predetermined condition is not satisfied, the number of the power receiving devices to which the power supplying device supplies power is maintained to be the same as the number of the power receiving devices to which the power supplying device supplies power in the normal state. Equipment control system.

2. At least one of the power receiving devices to which the power supply device supplies power during a power interruption is a lighting device. The device control system according to claim 1 .

3. The power supply device reads device information indicating a power consumption of each of the power receiving devices, the device information being stored in each of the power receiving devices, from each of the power receiving devices, and selects the power receiving device to which power is supplied when a power source is cut off, according to the device information.

3. The device control system according to claim 1 or 2.

4. The power supply device reads the device information from the power receiving device before the power receiving device is started, during the power receiving device is started, or at the time of starting the battery device. The device control system according to claim 3 .

5. The power supply device determines the power receiving devices based on a priority order preset for each of the power receiving devices. Selecting the power receiving device to which power is to be supplied when the power supply is interrupted.

3. The device control system according to claim 1 or 2.

6. the power supply device changes a dimming ratio of the selected power receiving device in accordance with a remaining charge of the battery device. The device control system according to claim 2 .

7. The power supply device changes a dimming ratio of the selected power receiving device according to a duration of the power supply interruption. The device control system according to claim 2 .

8. The power supply device determines that a power supply interruption has occurred based on a signal transmitted from the battery device. The device control system according to any one of claims 1 to 7.

9. The power supply device determines whether a power interruption has occurred based on whether a current detected by the power supply device is AC or DC. The device control system according to any one of claims 1 to 7.

10. When the power supply device detects a power interruption, the power supply device selects an emergency light that is not turned on when the power supply is turned on as the power receiving device to which the power supply device supplies power. The device control system according to any one of claims 1 to 9.

11. The lighting device is a base light, a system ceiling light, a downlight, or a spotlight.

8. An equipment control system according to any one of claims 2, 6 and 7.

12. The power receiving device is an air conditioner, a camera, a speaker, a disaster prevention device, a sensor, a wireless device, or a user interface device. The device control system according to any one of claims 1 to 11.

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