JP2002003104A - Image monitoring device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image monitoring device for an elevator capable of easily abstracting desired image data afterward and verifying an image of car inside by linking to an operating condition of an elevator. SOLUTION: This device is provided with a monitoring image recording means for combining image data of car inside of an elevator with the operating condition at this time and recording it onto an image data storage memory 100 when the operating condition of an elevator is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator video monitoring device used for security monitoring of an elevator, and more particularly to data recording.

[0002]

2. Description of the Related Art FIG. 12 is a block diagram showing the configuration of a conventional elevator image monitoring apparatus of this type disclosed in, for example, Japanese Patent Publication No. 6-74114. In the figure, 1 is a landing, 2 is an elevator car room, 3 is an in-car monitoring camera, 4 is a video monitoring device, and 11 is an elevator control device.

In the video monitoring device 4, 5 is a CPU, 6
Is a program ROM in which programs and data for video monitoring control are stored, and 7 is an input / output port (I / I / I / O) serving as an interface with the elevator controller 11.
O), 8 is an A / D converter for converting an analog video signal from the surveillance camera 3 into a digital video signal, and 9 is a digital video signal (data) that is directly
Direct memory access (DM
A) The controller 10 is a RAM which is a memory for temporary storage of the CPU.

The operation will be briefly described. The video data of the surveillance camera 3 is transmitted to the R
It is temporarily recorded in AM10. RA by the processing of the CPU 5
Video recognition processing such as detection of a person is performed on the video data of M10, and when it is determined that the situation is abnormal, the information is transmitted to the elevator control device 11 via the I / O7.

[0005]

In the conventional apparatus of this type, the data to be monitored is simply a video record or a video record to which an event occurrence time such as a specific operation or abnormality is added. It is extremely difficult to extract the necessary video data when confirming the reproduction of the recording. Also, since the operation status of the elevator is not recorded at the same time, for example, failure reproduction (elevator suddenly stopped etc.)
In this case, it was difficult to verify the actual operation of the elevator by linking it to the image inside the car. Further, if the video and the elevator operation event are simply converted into data, there is a problem that a large number of data recording areas are required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is possible to easily extract desired image data later, and to link an operation state of the elevator to an image of an elevator capable of verifying an in-car image. The purpose is to obtain a monitoring device.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned object, the present invention provides a monitoring video recording means for recording video data in an elevator cab in combination with the operating status when the operating status of the elevator changes. The video surveillance device for an elevator, comprising:

[0008] Further, the surveillance video recording means includes a video data recording area for recording video data in the elevator cab and an operation status code recording area for recording an operation status code obtained by coding an operation status when there is a change. 2. An elevator video monitoring apparatus according to claim 1, further comprising a video data storage unit having the following configuration, and storing the video data and the operation status code in respective areas.

The surveillance video recording means includes video data storage means having a video data recording area for recording video data in an elevator cab, and an operation state code which codes an operation state when there is a change. The elevator video monitoring apparatus according to claim 1, wherein character information corresponding to the video data is recorded together with the video data in a video data recording area.

The system further includes a video recording pre-processing means for pre-processing video data in the elevator cab including a text information position determining means for determining a writing position of text information in the video data, avoiding the passenger imaging section, The elevator image monitoring apparatus according to claim 3, wherein character information corresponding to the code is written at a writing position of the character information in a video data recording area of the video data storage unit.

The elevator image monitoring apparatus according to claim 1, wherein the operation state of the elevator is coded.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 First, a case where the video data and the operating state mode of the elevator are recorded in separate areas in the video data storage means will be described. FIG. 1 is a block diagram showing an example of the configuration of an elevator video monitoring device according to the present invention. The same or corresponding parts as those in the related art are denoted by the same reference numerals. Reference numeral 4a denotes a video monitoring device according to the present invention, and 100 denotes a video data storage memory that can be controlled by the CPU 5.

FIG. 2 is a functional block diagram of the elevator image monitoring apparatus according to this embodiment. Reference numeral 401 denotes an image input unit, which includes an A / D converter 8 and a DMA controller 9
And a RAM 10. Reference numeral 403 denotes a monitoring video recording unit. The video recording pre-processing unit 405, the state change detection unit 407, the operation code generation unit 409, the operation code recording unit 411, and the video data recording unit 413 are the CPU 5,
It is composed of a ROM 6 and an I / O 7, and is controlled by the CPU 5 according to a program stored in the ROM 6,
The video data storage means 415 is provided in the video data storage
0.

FIG. 3 is a diagram showing an example of the structure of data recorded in the video data storage memory 100 according to this embodiment. Reference numeral 12 denotes a storage area for video data and an elevator operation status code in the video data storage memory 100; Is an elevator operating status code recording area, 14 is a video data recording area, 15 is an operating status code recording area of another elevator operating status code as in 13, and 16 is a video data recording area corresponding to the operating status code 15 as in 14. Show.

FIG. 4 shows an example of a code indicating the operating state of the elevator according to the present invention. 5 and 6
9 shows a flowchart showing the operation of the monitoring video recording unit 403 in this embodiment.

Next, the operation will be described. First, video data photographed by the surveillance camera 3 is converted into digital data by the A / D converter 8 and then converted by the DMA controller 9.
And is temporarily recorded directly in the RAM 10 via the video input unit (video input means 401). Next, pre-processing of video recording is performed according to the flowchart shown in FIG. This processing is performed by a timer
(Not shown), it is called from the main flow (not shown) once every fixed time. In step S1, video data is read from the RAM 10, filtering is performed in step S2, and the filtered video data is written in the RAM 10 again in step S3 (the video recording preprocessing unit 405 of the monitoring video recording unit 403).

Next, a recording process is performed according to a flowchart shown in FIG. This process is also called by a timer (not shown) once every predetermined time. In step S1, an elevator operating state is detected by polling. The elevator operating state can be obtained from a control signal from the elevator control device 11 obtained via the I / O 7. Then, in step S2, it is determined whether or not the state of the elevator has changed with respect to the previous polling (state change detecting means 4).
07). If it is determined in step S2 that the state has changed, the elevator operating state at that time is coded in step S3. The coding of the elevator operation is performed, for example, as shown in FIG. 4 (operation code generation means 409).

Next, at step S4, the elevator operation status code is recorded in the operation status code recording area 13 of the recording area 12 shown in FIG. 3 of the video data storage memory 100 (operation code recording means 411). Next, in step S5, the above-described video data subjected to the filtering process when the operation status code recorded in step S4 is generated is read from the RAM 10, and is recorded in the video data recording area 14 of the recording area 12 shown in FIG. (Video data recording means 413).

As described above, whenever the elevator operation state changes according to the capacity of the image data storage memory 100, the operation state code and the image data at that time are sequentially recorded in the areas 13 and 14 shown in FIG. Is done.

Embodiment 2 Next, a case where an elevator operation status code is imposed in video data will be described.

FIG. 7 is a functional block diagram of the elevator image monitoring apparatus according to this embodiment. Reference numeral 401 denotes an image input means, which comprises the A / D converter 8, the DMA controller 9, and the RAM 10 of FIG. Reference numeral 403 denotes a monitoring video recording unit, which is a video recording preprocessing unit 405 including a character information position determination unit 405a, a state change detection unit 407, an operation code generation unit 409, an operation code corresponding character recording unit 417, and a video data recording unit 413. , R
The video data storage means 415 comprises the OM 6 and the I / O 7 and is controlled by the CPU 5 according to a program stored in the ROM 6.
It consists of.

FIG. 8 is a diagram showing an example of the structure of data recorded in the video data storage memory 100 according to this embodiment, where 30 is a video data recording area of the video data storage memory 100, and 31 is one elevator operation. One video data recording area 33 assigned when a state change occurs is a character information recording area in the video data recording area 31 in which character information corresponding to a code of an operation state is recorded. The video data recording area 31 is equal to the capacity of the video data recording area 14 of the first embodiment shown in FIG.

FIG. 9 shows an example of video data in this embodiment. FIG. 9 is an image taken from the upper part of the car room 2, 34 is a car door, 35 and 36 are passengers, 37 is a character information display area corresponding to an elevator operation state code,
Reference numeral 38 denotes an operation status code corresponding character information display.

FIGS. 10 and 11 are flowcharts showing the operation of the monitoring video recording means 403 in this embodiment.

Next, the operation will be described. First, video data photographed by the surveillance camera 3 is converted into digital data by the A / D converter 8 and then converted by the DMA controller 9.
And is temporarily recorded directly in the RAM 10 via the video input unit (video input means 401).

Next, pre-processing of video recording is performed according to the flowchart shown in FIG. This processing is performed by a timer
(Not shown), it is called from the main flow (not shown) once every fixed time. In step S1, the video data is read from the RAM 10, and in step S2, a filtering process is performed. In step S3, the area where the person (passenger) is present is specified by the image recognition processing, and the position of the area in which the character information of the elevator operation state code can be imposed so as to avoid this is determined. The filtered video data including the pauseable area mark (for example, a solid blue pattern) is written into the RAM 10 (character information position determining means 40).
Video recording preprocessing means 405) including 5a.

As a method for specifying an area where a person (passenger) is present by the image recognition processing in step S3, for example, as disclosed in Japanese Patent Publication No. 6-74114, it is necessary to recognize a passenger image. Binarization, contour enhancement,
It can be easily obtained from feature extraction processing such as barycenter detection, thinning, and area detection.

Next, the recording process is performed according to the flowchart shown in FIG. This process is also called by a timer (not shown) once every predetermined time. In step S1, an elevator operating state is detected by polling. The elevator operating state can be obtained from a control signal from the elevator control device 11 obtained via the I / O 7. Then, in step S2, it is determined whether or not the state of the elevator has changed with respect to the previous polling (state change detecting means 407). If it is determined in step S2 that the state has changed, the elevator operating state at that time is coded in step S3. As described above, the coding of the elevator operation is performed as shown in FIG. 4 (operation code generating means 409).

Next, in step S4, an imposable (writeable) area mark (in this example, a solid blue pattern portion) in the filtered video data when the operation status code in the RAM 10 is generated is extracted. The character data (information) of the operation status code is written in the portion (operation code corresponding character recording means 417). Next, in step S5, the video data in which the character data (information) has been written in step S4 is read from the RAM 10, and in step S6, it is recorded in the video data storage area 30 in the video data storage memory 100 as shown in FIG. Video data recording means 413). Thereby, as shown in FIG. 9, the character information display 38 corresponding to the operation status code is displayed in the character information displayable area 37 in the video data.
Is performed.

As described above, each time the elevator operation state changes according to the capacity of the video data storage memory 100, the operation state is sequentially stored in the image data recording area 31 including the character information storage area 33 shown in FIG. The code corresponding character information and the video data at that time are recorded.

[0031]

As described above, according to the present invention, there is provided surveillance video recording means for recording video data in the elevator cab in combination with the operation status at the time of a change in the operation status of the elevator. The video monitoring apparatus for elevators is characterized by the fact that the video is searched using the operating state of the elevator recorded together with the video, and desired video data can be easily extracted. In addition, video verification can be performed by linking with the operation state of the elevator, and can be used for verification verification of an elevator failure or the like.

The surveillance video recording means stores a video data recording area for recording video data in the elevator cab and an operation status code recording area for recording an operation status code obtained by coding an operation status when there is a change. Since the video data storage means having the following, the video data and the operation status code are recorded in each area,
Video data and operation status codes can be easily recorded.

[0033] The surveillance video recording means includes video data storage means having a video data recording area for recording video data in the elevator cab, and an operation state code which codes an operation state when there is a change. Is recorded in the video data recording area together with the video data, so that the operation status code is recorded in the same area as the video data, so that the capacity of the video data storage means can be saved.

Further, the system includes video recording pre-processing means for pre-processing video data in the elevator cab, which includes character information position determining means for determining a writing position of character information in the video data while avoiding the passenger imaging section, Since the character information corresponding to the code is written at the writing position of the character information in the video data recording area of the video data storage means, the display of the character information corresponding to the operation state code is performed by the passenger imaging unit of the video data. Do not overlap.

Further, since the operation state of the elevator is coded, it is possible to easily search for an image using the elevator operation state code recorded together with the image and extract desired image data. In addition, video verification can be performed by linking with the operation state of the elevator, and can be used for verification verification of an elevator failure or the like.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the configuration of an elevator video monitoring device according to the present invention.

FIG. 2 is a functional block diagram of the elevator video monitoring device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing an example of a structure of data recorded in a video data storage memory according to the first embodiment of the present invention.

FIG. 4 shows an example of a code indicating an operation state of the elevator according to the present invention.

FIG. 5 is a flowchart illustrating an operation of a monitoring video recording unit according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing an operation of a monitoring video recording unit according to the first embodiment of the present invention.

FIG. 7 is a functional block diagram of an elevator video monitoring device according to Embodiment 2 of the present invention.

FIG. 8 is a diagram showing an example of the structure of data recorded in a video data storage memory according to Embodiment 2 of the present invention.

FIG. 9 is a diagram showing an example of video data according to Embodiment 2 of the present invention.

FIG. 10 is a flowchart showing an operation of a monitoring video recording unit according to Embodiment 2 of the present invention.

FIG. 11 is a flowchart showing an operation of a monitoring video recording unit according to Embodiment 2 of the present invention.

FIG. 12 is a block diagram showing the configuration of a conventional elevator video monitoring device of this type.

[Explanation of symbols]

1 landing, 2 car room, 3 car surveillance camera, 4a
Video monitoring device, 5 CPU, 6 ROM, 7 input / output port (I / O), 8 A / D converter, 9 direct memory access (DMA) controller, 10 RA
M, 100 Video data storage memory.

Claims (5)

[Claims] 1. An elevator video surveillance apparatus comprising: surveillance video recording means for recording video data in an elevator cab in combination with an operation status at the time of a change in the operation status of the elevator. 2. A video data recording area for recording video data in an elevator cab and an operation status code recording area for recording an operation status code obtained by coding an operation status when there is a change. 2. The elevator video monitoring apparatus according to claim 1, further comprising video data storage means having the following configuration, wherein the video data and the operation status code are recorded in respective areas. 3. An operation status code, wherein said surveillance video recording means includes video data storage means having a video data recording area for recording video data in an elevator cab, and wherein an operation state when a change is made is coded. 2. The elevator video monitoring apparatus according to claim 1, wherein character information corresponding to the video data is recorded together with the video data in a video data recording area. 4. An operation state including video recording pre-processing means for pre-processing video data in an elevator cab including character information position determination means for determining a writing position of character information in video data avoiding a passenger imaging unit, The elevator video monitoring apparatus according to claim 3, wherein character information corresponding to the code is written at a writing position of the character information in a video data recording area of the video data storage unit. 5. The apparatus according to claim 1, wherein an operation state of the elevator is coded.