JP7031416B2 - Lighting equipment and control method of lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a lighting device and a method for controlling the lighting device.

Conventionally, there is known a lighting device that illuminates a predetermined facility and images the inside of the facility with a built-in camera. Such a lighting device can be used, for example, for the purpose of grasping the situation of workers and work processes in a factory, monitoring the intrusion of suspicious persons, and the like.

JP-A-2017-59414

By the way, in such a lighting device, since the storage unit for storing an image is finite, for example, an image captured by a built-in camera may be stored in the storage unit so as to be overwhelming. However, when an image is stored so that it can be overwritten as in the conventional technique, if the image to be confirmed is overwritten, there is a possibility that the administrator or the like cannot confirm the image.

An object of the present invention to be solved is to provide a lighting device and a control method of the lighting device capable of surely confirming a stored image by a manager or the like.

The lighting device according to the embodiment includes a lighting unit, an image pickup unit, a storage processing unit, and an acquisition unit. The lighting unit illuminates the inside of a predetermined facility. The image pickup unit takes an image of the inside of the predetermined facility. The storage processing unit stores the image captured by the image pickup unit in the storage unit in a state in which it can be overwritten. The acquisition unit acquires situation information indicating the surrounding situation in the lighting device. When the situation information acquired by the acquisition unit satisfies a predetermined change condition, the storage processing unit stores the image in the storage unit in a state in which overwriting is prohibited.

FIG. 1 is a diagram showing an outline of a control method of a lighting device according to an embodiment. FIG. 2 is a block diagram showing a configuration example of the lighting device according to the embodiment. FIG. 3 is a diagram showing condition information. FIG. 4 is a diagram showing the processing contents of the storage processing unit. FIG. 5 is a flowchart showing a processing procedure of the overwrite prohibition process executed by the lighting device. FIG. 6 is a flowchart showing a processing procedure of the release processing executed by the lighting device.

The lighting device 1 according to the embodiment described below includes a lighting unit 20, an imaging unit 30, a storage processing unit 120, and an acquisition unit 110. The lighting unit 20 illuminates the inside of a predetermined facility. The image pickup unit 30 takes an image of the inside of a predetermined facility. The storage processing unit 120 stores the image captured by the image pickup unit 30 in the storage unit 200 in a state in which it can be overwritten. The acquisition unit 110 acquires status information indicating the surrounding conditions in the lighting device 1. When the status information acquired by the acquisition unit 110 satisfies a predetermined change condition, the storage processing unit 120 stores the image in the storage unit 200 in a state in which overwriting is prohibited.

In the lighting device 1 according to the embodiment described below, the acquisition unit 110 acquires the type of a predetermined facility in which the lighting device 1 is installed. The storage processing unit 120 sets change conditions according to the type acquired by the acquisition unit 110.

In the lighting device 1 according to the embodiment described below, the acquisition unit 110 acquires the pattern of the flow of people in a predetermined facility as situation information based on the time-series images captured by the image pickup unit 30. When the human flow is an abnormal pattern different from the normal pattern, the storage processing unit 120 changes the image to the overwrite prohibition state, assuming that the change condition is satisfied.

In the lighting device 1 according to the embodiment described below, the acquisition unit 110 acquires a specific change operation input by the management user who manages the lighting device 1 as status information.

In the lighting device 1 according to the embodiment described below, the acquisition unit 110 acquires the change operation including the power on / off pattern in the lighting device 1 as status information.

The lighting device 1 according to the embodiment described below further includes a notification unit 130. The notification unit 130 notifies the outside of the overwrite prohibition information indicating that the overwriting of the image is prohibited by the storage processing unit 120.

In the lighting device 1 according to the embodiment described below, when the capacity of the storage unit 200 is filled with the overwrite-prohibited image, the storage processing unit 120 sets a state in which some of the images are overwrite-protected. To release.

In the lighting device 1 according to the embodiment described below, the storage processing unit 120 cancels the overwrite prohibition state of the image when a predetermined period has elapsed after changing the image to the overwrite prohibition state.

Hereinafter, the lighting device and the control method of the lighting device according to the embodiment will be described with reference to the drawings. In the embodiment, the same parts are designated by the same reference numerals, and duplicate description is omitted.

FIG. 1 is a diagram showing an outline of a control method of a lighting device according to an embodiment. As shown in FIG. 1, the lighting device 1 according to the embodiment is installed in, for example, a predetermined facility F. The predetermined facility F is, for example, a facility such as a factory where a specific person enters and exits, a facility such as a shopping mall where an unspecified number of people enter and exit, and a specific service such as a kindergarten and a long-term care facility. There are facilities provided to children). The lighting device 1 is not limited to the case where it is installed inside the facility F, and may be installed outside the facility F. Further, the lighting device 1 is not limited to the case where it belongs to a specific facility F, and may be a lighting device that does not belong to a specific facility F, such as a street light.

The lighting device 1 uses a semiconductor light emitting element such as an LED (Light Emitting Diode), a fluorescent lamp, or a light bulb as a light source, is installed in a predetermined facility F, and illuminates the inside of the predetermined facility F. For example, the lighting device 1 is installed on the ceiling of the facility F and illuminates the inside of the facility F by lighting a light source using the electric power supplied from the system power supply. Further, the lighting device 1 has, for example, an emergency light and various storage batteries, and when the power supply from the system power supply is stopped in an emergency such as an earthquake or a fire, the power charged in the storage battery is used. It may be an emergency light that lights up. As the lighting device 1, any lighting device such as a ceiling light, a base light, or a downlight can be adopted.

As shown in FIG. 1, the lighting device 1 according to the embodiment includes a main body unit 10, an illumination unit 20, and an image pickup unit 30. The main body 10 stores various control circuits that control the illumination unit 20 and the image pickup unit 30. Further, the main body unit 10 controls the lighting unit 20 and the image pickup unit 30 by using the electric power supplied from the system power supply.

The lighting unit 20 is a light source included in the lighting device 1, and is, for example, a semiconductor light emitting element such as an LED. The image pickup unit 30 is an image pickup device for taking a picture of a predetermined range from the position where the lighting device 1 is installed, and is, for example, a camera that takes a picture using various image pickup elements. The image pickup unit 30 may capture not only a still image but also a moving image.

As described above, the lighting device 1 according to the embodiment has a function as a lighting device and a function as a camera. By installing such a lighting device 1 in the facility F, it is not necessary to install a surveillance camera, so that the feeling of intimidation in the facility F due to the installation of the surveillance camera can be reduced.

Further, as shown in FIG. 1, the lighting device 1 stores the image captured by the image pickup unit 30 in the storage unit in a state in which it can be overwritten. The storage unit may be, for example, a portable storage medium such as an SD memory card that can be inserted and removed, or a built-in storage medium such as an HDD (hard disk drive).

By the way, in such a lighting device, since the storage unit for storing the captured image is finite, for example, the captured image is stored in the storage unit so as to be overwhelming. However, as described above, when the image is stored so that it can be overwritten, if the image to be confirmed is overwritten, there is a possibility that the administrator or the like cannot confirm the image. For example, when an abnormal situation such as a manufacturing process error occurs in a factory, there is a possibility that the abnormal situation cannot be confirmed.

Therefore, in the control method of the lighting device 1 according to the embodiment, the image stored in the storage unit can be overwritten. Specifically, as shown in FIG. 1, the lighting device 1 according to the embodiment acquires situation information indicating the situation around the own device (step S1). The situation information includes, for example, a situation obtained from an analysis result of an image captured in the facility F by the image pickup unit 30, a situation such as a specific operation performed by a management user who manages the lighting device 1. The details of the situation information will be described later.

Subsequently, the lighting device 1 according to the embodiment changes the captured image to the overwrite-prohibited state when the acquired status information satisfies a predetermined change condition (step S2). It should be noted that the image captured after the change to the overwrite-prohibited state is also stored in the storage unit in the overwrite-prohibited state.

For example, the lighting device 1 according to the embodiment changes the captured image to a state in which overwriting is prohibited, assuming that the change condition is satisfied when an abnormal situation such as a manufacturing process error occurs in the factory. As described above, according to the control method of the lighting device 1 according to the embodiment, the factory manager or the like can surely confirm the image showing the situation at the time when the manufacturing process error occurs, that is, the image to be confirmed. Can be done.

The lighting device 1 according to the embodiment has at least a part of the lighting device 1 when the predetermined period is changed after the overwrite-prohibited state is changed, or when the capacity of the storage unit is filled with the overwrite-prohibited image. The overwrite prohibition state of the image is canceled and the image can be overwritten, but this point will be described later.

Next, the configuration of the lighting device 1 according to the embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing a configuration example of the lighting device 1 according to the embodiment. As shown in FIG. 2, the main body 10 of the lighting device 1 has a control unit 100 and a storage unit 200.

The control unit 100 has an internal memory for storing a program defining various processing procedures and the like and required data, and executes various processing by these. Further, the control unit 100 includes an acquisition unit 110, a storage processing unit 120, and a notification unit 130.

The storage unit 200 is realized by, for example, a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory (Flash Memory), or a storage device such as a hard disk or an optical disk. The storage unit 200 according to the embodiment stores the image information 210 and the condition information 220.

The image information 210 is information including an image captured by the image pickup unit 30. The image information 210 is stored, for example, in chronological order in the order in which the images were taken.

The condition information 220 is information including change conditions that serve as a change criterion for overwriting prohibition in the storage processing unit 120 described later, and is information preset by an administrator or the like. The storage processing unit 120 performs processing using the change condition included in the condition information 220. FIG. 3 is a diagram showing condition information 220.

As shown in FIG. 3, the condition information 220 includes items such as a type and a change condition. The "type" is the type of the facility F in which the lighting device 1 is installed. "Arbitrary" in "type" indicates that the change condition is used regardless of the type of facility F. The "change condition" indicates a change condition used for processing of the storage processing unit 120 described later.

The acquisition unit 110 of the control unit 100 acquires various information. For example, the acquisition unit 110 acquires information on the type of facility F in which the lighting device 1 is installed, situation information indicating the surrounding situation of the lighting device 1, and the like.

For example, the acquisition unit 110 acquires the type of the facility F by an input operation of the management user or the like. Further, the acquisition unit 110 may estimate the type of the facility F from the image captured by the image pickup unit 30. Further, the acquisition unit 110 may acquire the type of facility F by using, for example, a position measurement system such as GPS (Global Positioning System).

For example, the acquisition unit 110 analyzes the image captured by the image pickup unit 30 and acquires status information such as the number of people included in the image and individual attributes (adult or child, gender, etc.). Further, the acquisition unit 110 acquires the pattern of the flow of people (human flow) in the image as situation information based on the time-series images stored in the storage unit 200.

Further, the acquisition unit 110 acquires a specific change operation input by the management user who manages the lighting device 1 as status information. For example, the acquisition unit 110 acquires a specific operation expressed by the management user using the body as a change operation. It is preferable that such a specific motion is an motion that a person does not perform in daily life. Further, the acquisition unit 110 may acquire the recognition result of the recognized object by the character, the color, the shape, or the combination thereof written in the predetermined medium by the management user as the situation information. As the predetermined medium, any medium such as paper, a screen of a mobile terminal, a dedicated card, or the like can be adopted. The management user may be recognized by, for example, recognizing a part of the body of the management user such as a face, a voiceprint, or a fingerprint, or may be recognized by a password manually entered by the management user.

Further, the acquisition unit 110 may acquire the power on / off pattern in the lighting device 1 as a change operation as a specific change operation. Further, the acquisition unit 110 may acquire, for example, information transmitted by a mobile terminal owned by the management user, a dedicated operation terminal for operating the lighting device 1, or the like as status information.

Further, the acquisition unit 110 may acquire the status information by voice recognition. For example, the acquisition unit 110 may recognize the voice of an unspecified person existing around the lighting device 1 or a specific word uttered by the management user and acquire it as situation information. The acquisition unit 110 notifies the storage processing unit 120 of the acquired status information.

The storage processing unit 120 stores the image captured by the image pickup unit 30 in the storage unit 200 in a state in which it can be overwritten. Then, when the status information acquired by the acquisition unit 110 satisfies the change condition included in the condition information 220, the storage processing unit 120 stores the image in an overwrite-prohibited state. Specifically, the storage processing unit 120 sets a flag indicating overwriting prohibition for each image stored as the image information 210.

The image changed to the overwrite-protected state by the storage processing unit 120 is, for example, all the images stored as the image information 210. Then, the storage processing unit 120 stores the newly captured image in the overwrite-prohibited state after the change process to the overwrite-prohibited state is performed.

The storage processing unit 120 is not limited to changing all the images stored as the image information 210 to the overwrite-prohibited state. For example, as shown in FIG. 4, only the images for a certain period of time are overwritten. You may change it.

FIG. 4 is a diagram showing the processing contents of the storage processing unit 120. In FIG. 4, it is assumed that the status information satisfies the change condition at time t. In such a case, the storage processing unit 120 puts the images at the predetermined time a before and after the time t into a overwrite-prohibited state with reference to the time t. As a result, it is possible to prevent unnecessary images that the management user does not need to confirm from being overwritten.

Although FIG. 4 shows a case where the predetermined time a before and after is the same with respect to the time t, the predetermined time a before and after may be different with respect to the time t. Alternatively, only one of the devices before or after the time t may be changed to the overwrite-protected state.

As the change condition that serves as the switching reference of the storage processing unit 120, for example, a condition corresponding to the type of the facility F acquired by the acquisition unit 110 is set. Specifically, the storage processing unit 120 selects and sets a change condition that matches the type of the facility F from the condition information 220 stored in the storage unit 200. As a result, appropriate change conditions can be set according to the facility F.

For example, when the pattern of the human flow acquired by the acquisition unit 110 is an abnormal pattern different from the normal pattern, the storage processing unit 120 stores the pattern in an overwrite-prohibited state as satisfying the change condition. As a result, for example, the occurrence of an abnormality in a factory or the like can be grasped by a change in the flow of people, so that an image indicating that such an abnormality has occurred can be reliably put in an overwrite-prohibited state.

The abnormal pattern of human flow is, for example, when the number of people included in the image exceeds a predetermined number per predetermined time, or the amount of change in the ratio of the attributes of people included in the image (ratio of adults and children) is a predetermined value. For example. Alternatively, the abnormal pattern may be a case where the average of the moving speeds of a plurality of people in a time-series image exceeds a predetermined value, a case where the moving directions of the plurality of people change, and the like.

Further, the storage processing unit 120 stores the image in an overwrite-prohibited state when the specific change operation by the management user acquired by the acquisition unit 110 satisfies the change condition. As a result, only the management user can arbitrarily change to the overwrite-protected state by performing a specific change operation.

Further, the storage processing unit 120 changes the image to the overwrite prohibition state when the power on / off pattern in the lighting device 1 satisfies the change condition. For the on / off pattern, for example, parameters such as the interval between the operation of turning on and the operation of turning off, and the number of times of switching between “on” and “off” are set. As a result, it is possible to change to the overwrite prohibition state by the existing equipment without introducing new equipment, so that it is possible to prevent the cost from increasing.

Alternatively, the storage processing unit 120 may change to the overwrite prohibition state when the acquisition unit 110 acquires the information instructing overwrite prohibition from the terminal of the management user. As a result, the management user can give an instruction to prohibit overwriting at any place.

Further, when the storage processing unit 120 changes the image to the overwrite prohibition state and then satisfies the predetermined cancellation condition, the storage processing unit 120 cancels the overwrite prohibition and returns the image to the overwrite enable state. For example, the storage processing unit 120 cancels the overwrite prohibition state of the image when a predetermined period has elapsed since the image was changed to the overwrite prohibition state. The predetermined period is determined according to, for example, the remaining capacity of the storage unit 200. For example, the predetermined period is set so that the capacity of the storage unit 200 is not full. The predetermined period may be set by the management user.

Further, when the capacity of the storage unit 200 is filled with the image in the overwrite-prohibited state, the storage processing unit 120 may cancel the overwrite-prohibited state of some of the images.

For example, when the capacity of the storage unit 200 is full, the storage processing unit 120 cancels the overwrite prohibition state of the oldest image among the image information 210 every time a new image is input by the image pickup unit 30. .. Alternatively, the storage processing unit 120 may cancel the overwriting prohibition of the image for a predetermined period from the oldest image when the capacity of the storage unit 200 is full.

Alternatively, the storage processing unit 120 may analyze each image in the image information 210, set a priority for canceling the overwrite prohibition for each image, and cancel the overwrite prohibition in ascending order of priority.

In this way, the storage processing unit 120 avoids a situation in which a new image is not stored in the storage unit 200 by canceling the overwrite prohibition state of a part of the images when the capacity of the storage unit 200 is full. can do.

Further, the storage processing unit 120 may release the overwrite prohibition state, for example, when the acquisition unit 110 acquires a specific release operation from the management user. For example, the storage processing unit 120 cancels the overwrite prohibition state when the acquisition unit 110 acquires that the management user has performed the specific change operation described above again.

Further, the storage processing unit 120 may cancel the overwrite prohibition state of the confirmed image when the acquisition unit 110 acquires the information indicating that the management user has confirmed the overwrite prohibited image.

The notification unit 130 notifies the outside of the overwrite prohibition information indicating that the overwriting of the image is prohibited by the storage processing unit 120. For example, the notification unit 130 is a lamp attached to the lighting device 1 and capable of outputting light of a predetermined color. Specifically, the notification unit 130 notifies whether the current state is an overwrite prohibition state or an overwrite enable state by outputting light of colors such as green, red, and yellow.

Further, the notification unit 130 may transmit overwrite prohibition information to a terminal or the like owned by the management user. Alternatively, the notification unit 130 may notify the predetermined server of the overwrite prohibition information so that the management user can access the server via the terminal and check the status of the lighting device 1. In this way, by notifying that the overwrite is currently prohibited, the management user can be surely recognized that the overwrite is being prohibited.

Further, the notification unit 130 may control to emit light having a specific wavelength via the illumination unit 20 to notify the overwrite prohibition information. For example, the notification unit 130 may notify the overwrite prohibition information by the management user wearing a spectacle-type wearable device that emits light having a specific wavelength by the illumination unit 20 and visualizes the light. This makes it possible to prevent users other than the management user from easily confirming whether or not overwrite is prohibited.

Next, the processing procedure executed by the lighting apparatus 1 according to the embodiment will be described with reference to FIGS. 5 and 6. FIG. 5 is a flowchart showing a processing procedure of the overwrite prohibition process executed by the lighting device 1. FIG. 6 is a flowchart showing a processing procedure of the release processing executed by the lighting device 1.

First, the processing procedure of the overwrite prohibition process will be described with reference to FIG. As shown in FIG. 5, first, the acquisition unit 110 acquires the type of the facility F in which the lighting device 1 is installed (step S101). Subsequently, the storage processing unit 120 sets the change condition according to the type of the facility F acquired by the acquisition unit 110 (step S102).

Subsequently, the acquisition unit 110 acquires status information indicating the surrounding conditions in the lighting device 1 (step S103). Subsequently, the storage processing unit 120 determines whether or not the status information acquired by the acquisition unit 110 satisfies the change condition (step S104).

When the status information satisfies the change condition (step S104, Yes), the storage processing unit 120 stores the image in the storage unit 200 in the overwrite-protected state (step S105), and ends the processing.

On the other hand, when the status information does not satisfy the change condition (step S104, No), the storage processing unit 120 stores the image in the storage unit 200 in a state where the image can be overwritten (step S106), and ends the processing.

Next, the processing procedure of the release process will be described with reference to FIG. As shown in FIG. 6, the storage processing unit 120 stores the image in the storage unit 200 in an overwrite-protected state (step S201). Subsequently, the storage processing unit 120 determines whether or not there has been a release operation by the management user (step S202).

When there is a release operation (step S202, Yes), the storage processing unit 120 cancels the image overwrite prohibition state (step S203), and ends the process.

On the other hand, when there is no release operation (step S202, No), the storage processing unit 120 determines whether or not a predetermined period has elapsed since the state was changed to the overwrite prohibition state (step S204).

When the storage processing unit 120 determines that a predetermined period has elapsed since the state was changed to the overwrite prohibition state (steps S204, Yes), the storage processing unit 120 shifts the processing to step S203.

On the other hand, when the storage processing unit 120 determines that a predetermined period has not elapsed since the state was changed to the overwrite prohibition state (step S204, No), the storage processing unit 120 determines whether or not the capacity of the storage unit 200 is full (step). S205).

When the capacity of the storage unit 200 is full (step S205, Yes), the storage processing unit 120 cancels the overwrite prohibition state of some images (step S206), and ends the processing.

On the other hand, when the capacity of the storage unit 200 is not full (steps S205, No), the storage processing unit 120 shifts the processing to step S202.

As described above, the lighting device 1 according to the embodiment includes a lighting unit 20, an imaging unit 30, a storage processing unit 120, and an acquisition unit 110. The lighting unit 20 illuminates the inside of the predetermined facility F. The image pickup unit 30 takes an image of the inside of a predetermined facility F. The storage processing unit 120 stores the image captured by the image pickup unit 30 in the storage unit 200 in a state in which it can be overwritten. The acquisition unit 110 acquires status information indicating the surrounding conditions in the lighting device 1. When the status information acquired by the acquisition unit 110 satisfies a predetermined change condition, the storage processing unit 120 stores the image in the storage unit 200 in a state in which overwriting is prohibited. As a result, the stored image can be surely confirmed by the administrator or the like.

The lighting device 1 according to the embodiment may be connected to an external server device via, for example, a predetermined network. In such a case, when the capacity of the storage unit 200 is full, the storage processing unit 120 may transmit the stored image information 210 to the server device and store the image information 210 in the server device. .. As a result, a new image can be stored in the storage unit 200 without overwriting the past image information 210.

In such a case, the management user can access the server device via the terminal owned by the management user and check the image information 210 stored in the server device.

Although embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This embodiment and its modifications are included in the scope and gist of the invention as well as the invention described in the claims and the equivalent scope thereof.

1 Lighting device 10 Main unit 20 Lighting unit 30 Imaging unit 100 Control unit 110 Acquisition unit 120 Storage processing unit 130 Notification unit 200 Storage unit 210 Image information 220 Condition information F Facility

Claims (8)

With a lighting unit that illuminates the inside of a given facility;
With an image pickup unit that images the inside of the predetermined facility;
A storage processing unit that stores an image captured by the imaging unit in a storage unit in a state in which it can be overwritten;
It is equipped with an acquisition unit that acquires status information indicating the surrounding conditions in the lighting device;
The storage processing unit is
When the change condition according to the type of the facility is set and the status information acquired by the acquisition unit satisfies the predetermined change condition according to the type of the facility, the image is overwritten. A lighting device that stores in the storage unit. The acquisition unit
Based on the time-series images captured by the imaging unit, the pattern of the flow of people in the predetermined facility is acquired as the situation information.
The storage processing unit is
The lighting device according to claim 1 , wherein when the human flow is an abnormal pattern different from the normal pattern, the image is changed to the overwrite prohibition state, assuming that the change condition is satisfied. The acquisition unit
The lighting device according to claim 1 or 2 , wherein a specific change operation input by a management user who manages the lighting device is acquired as the status information. The acquisition unit
The lighting device according to claim 3 , wherein the change operation including the power on / off pattern in the lighting device is acquired as the status information. The lighting device according to any one of claims 1 to 4 , further comprising a notification unit for notifying the outside of overwrite prohibition information indicating that overwriting of the image is prohibited by the storage processing unit. The storage processing unit is
The invention according to any one of claims 1 to 5 , wherein when the capacity of the storage unit is filled with the overwrite-prohibited image, the overwrite-prohibited state of a part of the image is released. Lighting equipment. The storage processing unit is
The lighting device according to any one of claims 1 to 6 , wherein when a predetermined period has elapsed since the image was changed to the overwrite prohibition state, the overwrite prohibition state of the image is released. With a lighting step that illuminates a given facility;
With the imaging step of imaging the inside of the predetermined facility;
With the storage processing step of storing the image captured by the imaging step in the storage unit in a state in which it can be overwritten;
The acquisition step of acquiring the situation information indicating the surrounding situation in the lighting device;
The storage processing step is
When the change condition according to the type of the facility is set and the status information acquired by the acquisition step satisfies the predetermined change condition according to the type of the facility, the image is overwritten. A method for controlling a lighting device to be stored in the storage unit.

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