JP6564486B1 - Video surveillance device - Google Patents

Abstract

A signal lamp and a state of a manufacturing facility connected to the signal lamp are easily monitored. A video monitoring device 2 includes a video reception unit 21 that receives a video of a signal lamp that informs a change in a detection target state by lighting of a lighting unit from a photographing device, and positional information on the position of the lighting unit in the video. And signal light information storage unit 22 for storing signal lamp information that associates state information indicating the state of the detection target by lighting of the lighting unit, and when lighting is detected in the video, the signal lamp information is used to correspond to the lighted position And a state detection unit 24 that detects the current state of the detection target from the state information. [Selection] Figure 1

Description

  The present invention relates to a signal lamp and a technique for monitoring a manufacturing facility connected to the signal lamp.

  In factories, signal lights are used for quality control of factories (Non-Patent Document 1). The signal lamp is physically and electrically connected to a manufacturing facility that operates in a manufacturing facility facility of a factory, and lights up in response to an abnormal signal output when the manufacturing facility is abnormal.

  However, signal lights are based on the premise that “monitors will be resident in the manufacturing equipment facility and directly monitor the lighting / non-lighting of the signal lights”, so quality control is performed at large factories with hundreds of manufacturing facilities. In order to do this, it was necessary to secure a certain number of supervisors, and it was difficult to increase the production facilities.

  Therefore, as a facility management method using signal lights, a method of monitoring a plurality of signal lights and production equipment from a place outside the production equipment facility is expected. For example, (1) A distributor is inserted into the electrical line that connects between the manufacturing facility and the signal lamp, the abnormal signal from the manufacturing facility is branched, and a current measurement circuit is provided on the branch line to measure the current value of the abnormal signal. In addition, there is a method of outputting the current value of the abnormal signal to the outside through an electric line disposed on the ceiling. In addition, (2) there is a method in which an illuminance meter is directly attached to a signal lamp to measure the brightness value of the lighting part, and the measured brightness value of the lighting part is converted into signal data and output to the outside.

  The current value of the abnormal signal or the lightness value of the signal lamp based on the method of (1) or (2) is transmitted to a management center or the like outside the manufacturing facility facility and displayed on the monitor as a warning, so that a small number of supervisors can be obtained. Even a plurality of signal lights and manufacturing equipment can be monitored at once.

PATLITE, “Improvement case: FA site”, [online], [Search on March 15, 2018], <URL: http://www.patlite.co.jp/adoption_case/index_fa.html>

  However, in the case of (1), it is necessary for an electrician to visit the factory, and to perform circuit design and wiring design for attaching a distributor and a current measurement circuit to each of a plurality of manufacturing facilities. There was a problem of requiring a period. In addition, there is a problem that a blind spot is generated in the signal lamp when the electric cable of the branch line wired toward the ceiling overlaps the signal lamp.

  Further, even in the case of (2), there is a problem that it takes at least about 3 hours to install and cure the illuminance meters on the plurality of signal lights. Further, since the illuminance meter is directly attached to the signal lamp, there is a problem that a part of the lighting part is covered with the attached curing tape and a blind spot is generated in the signal lamp. Furthermore, the illuminometer has a problem that the color of the lighting part cannot be distinguished.

  The present invention has been made in view of the above, and an object of the present invention is to easily monitor the state of a signal lamp and a manufacturing facility connected to the signal lamp.

In order to solve the above problems, in the video monitoring apparatus according to claim 1, the same signal lamp informing the state change of the detection target by lighting of the lighting unit and the detection target connected to the signal lamp are respectively photographed at different angles. a receiver for receiving a plurality of images from a plurality of imaging apparatus, the detection target and a plurality of position information the lighting section of the same signal light in the plurality of images are located respectively, by lighting the lighting section a storage unit for storing the state information, the signal lamp information associated with indicating the state, when detecting the lighting in any image of the plurality of images, referring to the signal lamp information, and detects the lighting picture And a detection unit that detects a current state of the detection target from state information corresponding to a position that is lit using only the light.

The video monitoring apparatus according to a second aspect is the video monitoring apparatus according to the first aspect, wherein the position information is position information related to a region of a predetermined size including the position coordinates of the lighting unit .

  ADVANTAGE OF THE INVENTION According to this invention, the state of the manufacturing equipment connected to the signal lamp and a signal lamp can be monitored easily.

It is a figure which shows the structure of the monitoring system which concerns on 1st Embodiment. It is a figure which shows the example of the image | video which concerns on 1st Embodiment. It is a figure which shows the processing flow of the video monitoring apparatus which concerns on 1st Embodiment. It is a figure which shows the example of the signal light information which concerns on 1st Embodiment. It is a figure which shows the structure of the monitoring system which concerns on 2nd Embodiment. It is a figure which shows the example of the image | video which concerns on 2nd Embodiment. It is a figure which shows the processing flow of the video monitoring apparatus which concerns on 2nd Embodiment. It is a figure which shows the example of the signal light information which concerns on 2nd Embodiment.

  Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram illustrating a configuration of a monitoring system 100 according to the first embodiment. The monitoring system 100 detects lighting / non-lighting of a signal lamp physically and electrically connected to a manufacturing facility operating in a manufacturing facility facility of a factory, and detects a change in state of the manufacturing facility connected to the signal lamp and the signal lamp. It is a monitoring system.

  As shown in FIG. 1, the monitoring system 100 includes a single photographing device 1 and a video monitoring device 2. The imaging device 1 and the video monitoring device 2 are connected via a wired or wireless communication network 3.

  The photographing apparatus 1 is a camera that is fixedly installed at a predetermined position in a manufacturing facility facility. The photographing device 1 has a function of photographing the signal lamp and the manufacturing facility connected to the manufacturing facility and transmitting the photographed video to the video monitoring device 2.

  Here, the signal lamp will be described. The signal lamp is composed of one or a plurality of lighting sections, and informs the state (normal / stop / abnormal) of the manufacturing facility by lighting one or more lighting sections. For example, it is possible to grasp that the manufacturing equipment related to the lighting unit is currently in a normal state by lighting the lighting unit at a predetermined position. In addition, it is possible to grasp that the manufacturing facility is currently stopped, in an abnormal state, or the like by lighting the lighting unit at another position. In addition, when the lighting unit is associated with a color, it is possible to associate the state of the signal lamp and the manufacturing equipment with the color. For example, if it is blue, the current state is normal. Since the present invention is characterized in that the position of the signal lamp is determined based on whether or not the signal lamp is turned on, the color of the signal lamp may be any color including colorless and is not limited to the color.

  Further, the “detection target” described in the claims is not limited to a manufacturing facility for manufacturing purposes. For example, an apparatus such as a transport facility that conveys parts to the belt may be included, or the signal lamp itself may be included in consideration of the state change of the signal lamp itself due to lighting. In this embodiment, the manufacturing facility is used.

  Further, the “signal lamp” and the “signal lamp itself” described in the claims include light emitters such as houses, buildings, store signs, neon signs, and lighthouses having light sources. In this case, the “lighting part” and the “detection target” are, for example, light of a house window.

  As shown in FIG. 1, the video monitoring apparatus 2 includes a video reception unit 21, a signal light information storage unit 22, a lighting detection unit 23, a state detection unit 24, and a state change notification unit 25. Is done.

  The video reception unit 21 has a function of receiving a signal lamp and a video captured by a manufacturing facility connected to the signal lamp from the imaging apparatus 1.

  The signal lamp information storage unit 22 has a function of storing signal lamp information in which position information where the lighting part of the signal lamp is located in the video and state information indicating the state of the manufacturing facility by lighting of the lighting part are associated with each other.

  The lighting detection unit 23 measures the brightness or luminance of each coordinate position in the video received from the imaging device 1 and detects lighting in the video based on whether the measured brightness or luminance value exceeds a threshold value. It has a function to do.

  When the state detection unit 24 detects lighting in the video received from the photographing apparatus 1, the state detection unit 24 reads the signal lamp information from the signal lamp information storage unit 22, and determines the current state of the manufacturing facility from the state information of the manufacturing facility corresponding to the lighted position. It has a function to detect the state.

  The state change notification unit 25 has a function of displaying the current state of the manufacturing facility detected by the state detection unit 24 on the monitor of the video monitoring device 2, or converting it into signal data and transmitting it to another monitoring device. The other monitoring devices include an integrated monitoring device that integrally monitors manufacturing facilities of other factories, a monitor's mobile terminal, and the like.

  Next, the processing operation of the monitoring system 100 will be described.

  First, the processing operation of the photographing apparatus 1 will be described. The imaging device 1 captures the signal lamp and the manufacturing facility connected to the manufacturing facility, and transmits the captured image to the video monitoring device 2. For example, as illustrated in FIG. 2, the imaging device 1 captures a signal lamp 4 including three lighting units 4 a to 4 c and transmits the signal lamp 4 to the video monitoring device 2.

Next, the processing operation of the video monitoring device 2 will be described. FIG. 3 is a diagram illustrating a flowchart of processing operations performed by the video monitoring apparatus 2. It is assumed that the signal light information shown in FIG. 4 is stored in the signal light information storage unit 22 of the video monitoring device 2. Coordinate position included in the lighting position of the signal light information _{(x 1, y 1) ~} (x 3, y 3) , the coordinate position of the image shown in FIG. _{2 (x 1, y 1)} ~ (x 3, y ₃ ) respectively.

Step S101;
First, the video reception unit 21 receives from the imaging device 1 an image of a signal lamp and a manufacturing facility connected to the signal lamp.

Step S102;
Next, the lighting detection unit 23 measures the brightness of each coordinate position in the video received from the imaging device 1 and determines whether lighting is detected in the video based on whether the value of the brightness exceeds a threshold value. Determine whether. If lighting is detected in the video, the process proceeds to step S103. If lighting is not detected in the video, the process returns to step S101 and repeats re-determination for the subsequent video.

Step S103;
When the lighting is detected in the video, the lighting detection unit 23 identifies the position where the light is lit in the video. Here, the lighting part 4a of the signal lamp 4 is turned on in FIG. 2, and the coordinate position (x ₁ , y ₁ ) is specified in the image of FIG.

Step S104;
Subsequently, the state detection unit 24 reads the signal lamp information of FIG. 4 from the signal lamp information storage unit 22, acquires the “abnormal” state of the manufacturing facility corresponding to the specified coordinate position (x ₁ , y ₁ ), and manufactures Detect that the current state of the equipment is "abnormal".

Step S105;
Finally, the state change notification unit 25 displays on the monitor that the current state of the manufacturing facility is “abnormal” and that a state change has occurred, or converts it into signal data and transmits it to another monitoring device. To do.

  As mentioned above, according to 1st Embodiment, the imaging device 1 which image | photographs the signal lamp for detecting the state of manufacturing equipment is installed in the manufacturing equipment facility of a factory, and the video monitoring apparatus 2 is taken from the image | photographed image | video. Since the presence or absence of lighting is detected in the image and the state of the manufacturing facility is detected from the lighted position, the state of the manufacturing facility connected to the signal lamp and the signal lamp can be easily monitored.

<Second Embodiment>
In the first embodiment, the case where one photographing apparatus 1 is used has been described. On the other hand, since the photographing apparatus 1 is fixedly installed at a predetermined position, it can only photograph from a predetermined angle. Therefore, in order to ensure that the blind spot area of the signal lamp can be photographed, the signal lamp may be photographed from a plurality of angles using a plurality of photographing apparatuses 1.

  However, when the same signal lamp is imaged by a plurality of imaging devices 1, a change in the state of the same signal lamp and manufacturing equipment is double detected. Therefore, in the second embodiment, a method will be described in which even when a plurality of imaging apparatuses 1 are used, the same signal lamp and manufacturing equipment state change are not double-detected.

  FIG. 5 is a diagram illustrating a configuration of the monitoring system 100 according to the second embodiment. The monitoring system 100 includes a plurality of photographing devices 1a to 1n and a video monitoring device 2.

  The plurality of photographing apparatuses 1a to 1n are fixedly installed at different places in the manufacturing facility facility. In the present embodiment, the plurality of imaging devices 1a to 1n respectively capture the same signal lamp from different angles, and transmit the captured images to the video monitoring device 2, respectively.

  Similar to the first embodiment, the video monitoring device 2 includes a video reception unit 21, a signal light information storage unit 22, a lighting detection unit 23, a state detection unit 24, and a state change notification unit 25. Composed.

  The video receiving unit 21 has a function of receiving a plurality of videos taken by the same signal lamp and manufacturing equipment connected to the signal lamp at different angles, respectively, from the plurality of imaging devices 1a to 1n.

  The signal lamp information storage unit 22 stores signal lamp information that associates position information where the same lighting part of the same signal lamp is located in a plurality of images with state information indicating the state of the manufacturing facility by lighting of the lighting part. It has a function to do.

  When the state detection unit 24 detects lighting in any one of the plurality of images, the state detection unit 24 reads the signal lamp information from the signal lamp information storage unit 22 and uses only the image where the lighting is detected, and corresponds to the lighting position. A function of detecting the current state of the manufacturing facility from the state information of the manufacturing facility.

  The lighting detection unit 23 and the state change notification unit 25 have the same functions as those described in the first embodiment.

  Next, the processing operation of the monitoring system 100 will be described.

  First, processing operations of the plurality of imaging devices 1a to 1n will be described. The plurality of photographing apparatuses 1a to 1n respectively photograph the same signal lamp connected to the manufacturing facility and the manufacturing facility connected to the signal lamp from different angles, and transmit the captured images to the video monitoring apparatus 2, respectively. For example, as shown in FIG. 6, the two photographing devices 1 a and 1 n simultaneously photograph one signal lamp 4 composed of three lighting units 4 a to 4 c and transmit it to the video monitoring device 2.

  Next, the processing operation of the video monitoring device 2 will be described. FIG. 7 is a diagram illustrating a flowchart of processing operations performed by the video monitoring apparatus 2. Note that the signal light information shown in FIG. 8 is stored in the signal light information storage unit 22 of the video monitoring device 2. In the signal light information, the coordinate position of the lighting part in the video #a photographed by the photographing apparatus 1a and the coordinate position of the lighting part in the video #n photographed by the photographing apparatus 1n are stored in association with each other. ing.

Step S201;
First, the video reception unit 21 receives a video signal taken from a signal lamp and a manufacturing facility connected to the signal lamp from each of the plurality of imaging devices 1a to 1n. In the received plurality of images, the same signal lamp is taken from different angles.

Step S202;
Next, the lighting detection unit 23 determines whether lighting has been detected in any of the plurality of videos using the brightness in the video and a threshold value for the brightness. If lighting is detected in any of the videos, the process proceeds to step S203. If lighting is not detected in any of the videos, the process returns to step S201 and repeats re-determination for the subsequent videos.

Step S203;
When lighting is detected in any of the videos, the lighting detection unit 23 uses only the detected video to specify the position where the lights are lit. Here, it is assumed that the lighting unit 4b of the signal lamp 4 is turned on in FIG. 6 and the lighting is detected in the video #n before the video #a, and the coordinates in the video #n are used only by the video #n. The position (x ₂₂ , y ₂₂ ) is specified.

Step S204;
Subsequently, the state detection unit 24 reads the signal lamp information of FIG. 8 from the signal lamp information storage unit 22, acquires the “stopped” state of the manufacturing facility corresponding to the specified coordinate position (x ₂₂ , y ₂₂ ), and manufactures Detect that the current state of the equipment is a “stop” state.

Step S205;
Finally, the state change notification unit 25 displays on the monitor that the current state of the manufacturing facility is the “stopped” state and the state change has occurred, or converts it into signal data and transmits it to another monitoring device. To do.

(Modification 1)
In the second embodiment, the case where the lighting monitoring determination process is performed by the video monitoring apparatus 2 has been described. However, if the photographing apparatus 1 has a light emission detection function, the determination process is performed by each of the plurality of photographing apparatuses 1 to emit light. The detection result of (lighting) may be notified to the video monitoring apparatus 2. In this case, the video monitoring device 2 specifies the lighting position using the video of the photographing device 1 that has received the information indicating that the light is emitted.

  As described above, according to the second embodiment, when the lighting is detected in any one of a plurality of videos taken by the same signal lamp from different angles, the state detection unit 24 detects the lighting. Since the current state of the manufacturing equipment is detected from the position information corresponding to the lighted position using only the image that has been turned on, it is possible to prevent double detection of the same signal lamp and a change in the state of the manufacturing equipment connected to the signal light. .

(Variation 1 common to the embodiments)
In the first embodiment and the second embodiment, as shown in the images of FIGS. 2 and 6, as the coordinate positions (x, y) in the images of the lighting units 4 a, 4 b, 4 c, the lighting region The case where the center of gravity is used has been described. On the other hand, instead of using the barycentric point of the lighting area, a rectangular area surrounding the lighting area may be used. For example, if the monitor designates the starting point position (X, Y) and designates a and b pixels corresponding to the horizontal width and the vertical width of the lighting area, respectively, a pixel corresponding to a pixel in the X-axis direction from the starting point position (X, Y). A rectangular area having a height of b pixels from the starting position (X, Y) to the Y-axis direction is defined as the position of the lighting part. In this case, the lighting position of the signal lamp includes information (pixel values in the X-axis and Y-axis directions) corresponding to the width and height of the lighting part.

(Modification 2 common to each embodiment)
In 1st Embodiment and 2nd Embodiment, as shown in FIG. 4, FIG. 8, the case where the state of manufacturing equipment was linked | related only with the position of a lighting part was demonstrated. On the other hand, the state of the manufacturing facility may be associated with the lighting pattern of the lighting unit. For example, with respect to the lighting position (x ₁ , y ₁ ), (1) “1 time lighting” − “operation”, (2) “2 times lighting, lighting time interval 1 second” − “normal end”, (3 ) "Turn on twice, turn-off time interval 0.1 second"-"abnormal end", (4) "Turn on three times, turn-off time interval 0.1 second"-"emergency end". In this case, the state detection unit 24 detects the lighting position and lighting pattern, and detects and notifies the state of the manufacturing equipment corresponding to the detected lighting position and lighting pattern. Other lighting patterns, extinguishing patterns, and other types of warning information may be used.

(Modification 3 common to each embodiment)
In 1st Embodiment and 2nd Embodiment, the case where the signal lamp information shown in FIG. 4, FIG. 8 was prepared previously was demonstrated. On the other hand, the video monitoring device 2 specifies the light emission of the signal lamp, the light emission pattern of the signal lamp, and the coordinate position where the signal lamp emitted light in the video, respectively, and the signal lamp information shown in FIGS. 4 and 8 (common to each embodiment) The signal lamp information described in the modified example 2) may be preprocessed to be registered in the storage unit of the own device.

  Finally, the video monitoring apparatus 2 described in each embodiment can be realized by a computer. It is also possible to create a program for causing a computer to function as the video monitoring apparatus 2 and a storage medium for the program.

DESCRIPTION OF SYMBOLS 100 ... Surveillance system 1, 1a, 1n ... Imaging device 2 ... Image | video monitoring device 21 ... Image | video receiving part 22 ... Signal light information storage part 23 ... Lighting detection part 24 ... State detection part 25 ... State change notification part 3 ... Communication network 4 ... Signal lamps 4a-4c ... lighting part

Claims (2)

A receiver for receiving a plurality of images from a plurality of imaging devices the detection target which is connected to the same signal light and the signal light indicating the status change of the detection target is captured respectively at different angles by turning on the lighting section,
Storage for storing a plurality of position information in which the lighting section of the same signal light in the plurality of images are located respectively, and status information indicating the state of the detection target by lighting of the lighting unit, a signal lamp information that associates And
When lighting is detected in any one of the plurality of videos, the current state of the detection target is referred to from the status information corresponding to the position where the lighting is performed using only the video whose lighting is detected with reference to the signal lamp information. A detection unit for detecting
A video surveillance apparatus comprising: The location information is
The video monitoring apparatus according to claim 1, wherein the video monitoring apparatus is position information relating to an area of a predetermined size including position coordinates of the lighting unit .

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