JP6063400B2 - Elevator abnormality monitoring device - Google Patents

Description

  The present invention relates to an elevator abnormality monitoring apparatus.

  Crimes in elevator cars are on the rise, and examples of crimes include damage to equipment in the car and violence against others. As a crime prevention measure, the installation of security cameras (hereinafter abbreviated as cameras) in the car is effective, and the number of cameras installed is also increasing.

  Although the camera itself is a reactive product, it also installs an immediate security system that analyzes camera images, detects abnormal behavior of passengers in the car, and makes warning announcements and stops the nearest floor of the elevator. Has been.

  With regard to this immediate response type security device, the behavior of passengers in the car is monitored with a camera, and if it is determined that the passenger's behavior is abnormal, a warning announcement, warning display, and the nearest floor in the car Japanese Laid-Open Patent Publication No. 2007-230732 (Patent Document 1) discloses a method for stopping crimes by stopping.

  For security purposes, if there are glass windows on the car door and landing door, and the camera is installed so that these windows are in the field of view, When the window faces (overlaps) the window on the landing side, outside light enters the car through the window and hinders monitoring by the camera.

  In order to solve this problem, Japanese Patent Application Laid-Open No. 2008-195495 (Patent Document 2) discloses that a polarizing filter is installed in each of the camera and the window to attenuate external light entering the camera from the window.

JP 2007-230732 A JP 2008-195495 A

  Patent Document 1 does not consider the adverse effect on the camera caused by external light through the window when the door is provided with a window. It is also possible to place the camera inside the car so that the window does not enter the field of view in order to avoid the adverse effects of external light, but this will narrow the camera's shooting range and cause behavioral error detection errors (missing). There is a problem of increasing.

  Since Patent Document 2 is a technique for installing a polarizing filter on a camera and a window to weaken the external light entering the camera from the window, the central portion (mainly the window portion) of the shooting range of the camera is optically affected. However, there was a problem that the camera recording was not performed normally.

  In order to cope with this, a mask process such as removing an area corresponding to the window portion from the object of the image processing is necessary. However, there is a problem that an image area that can be acquired becomes narrower if mask processing is performed, and detection errors (missing) of behavioral abnormalities increase.

  The present invention has been made in consideration of the above-described problems, and provides an elevator abnormality monitoring apparatus that can determine behavioral abnormalities with a simple configuration without being affected by external light entering the image acquisition means. It is in.

In order to achieve the above object, the present invention provides:
There are windows on the car door and landing door,
A car travel position detecting means for detecting a travel position of the car in the hoistway;
Image acquisition means for acquiring an image in the car installed so that the window of the car enters the field of view;
Comprising an abnormality determining means for analyzing a behavior of a passenger in a car from an image acquired by the image acquiring means and determining a behavior abnormality,
Based on the travel position information from the car travel position detecting means, when the car window does not face the landing window, the abnormality determining means determines a behavior abnormality.

  According to the present invention, it is possible to determine a behavioral abnormality with a simple configuration without being affected by external light entering the image acquisition unit from the window.

1 is an overall configuration diagram of an elevator according to an embodiment of the present invention. It is a block diagram of the abnormality monitoring apparatus installed in the elevator.

Hereinafter, an elevator abnormality monitoring apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram of an elevator, and FIG. 2 is a block diagram of an abnormality monitoring device installed in the elevator.
As shown in FIG. 1, a car 2 and a counterweight 1A are connected to each other by a rope 1B through a plurality of pulleys 1E and a sheave 1D in a hoistway 1 of the elevator. An elevator operation control device (hereinafter abbreviated as an operation control device) 3 rotates the sheave 1D via a motor 1C, thereby causing the passenger car 2 and the counterweight 1A to travel up and down via a rope 1B. (Not shown) is transported to the desired floor.

  The rotary encoder 1F connected to the motor 1C inputs a pulse signal generated by the rotation of the motor 1C to the operation control device 3, calculates a traveling position of the car 2 in the hoistway 1 from the pulse signal, and The operation control is performed.

  Since the inside of the traveling car 2 is a closed space, a window 2E and a window 2G are provided on the car door 2D of the car 2 and the landing door 2F of each landing for crime prevention. As shown in FIG. 1, when the car 2 passes through the landing, the window 2E faces (overlaps) the window 2G, and outside light enters the car 2 through the window 2E and the window 2G instantaneously. .

  In the car 2, a camera 2A, a speaker 2B, and a monitor 2C are installed, and the camera 2A is installed so that the window 2E is also in the field of view.

  As shown in FIG. 2, in the present embodiment, the abnormality monitoring device includes a camera 2A, a speaker 2B, a monitor 2C, an operation control device 3, an image recording device 4, and an abnormality determination device 5.

  The abnormality determination device 5 includes an image analysis unit 5A, an abnormality determination unit 5B, an abnormality command unit 5C, and a determination permission unit 5D, and each unit is connected as shown in the figure. In FIG. 2, each part 5A to 5D is described as being independent for the sake of explanation, but in reality, the abnormality determination device 5 is composed of one information processing device such as a personal computer, and the information of each part 5A to 5D is contained therein. Processing is done.

  Next, operations of the abnormality determination device 5, the speaker 2 </ b> B, the monitor 2 </ b> C, and the operation control device 3 when the passenger takes an abnormal action such as rampage in the car 2 will be described.

  The operation control device 3 controls the operation state of the car 2 such as running and stopping when the passenger gets on the car 2 and moves from the boarded floor to the arrival floor. The opening / closing operation of the car door 2D and the landing door 2F is controlled.

  The camera 2 </ b> A is connected to the image recording device 4 and the abnormality determination device 5, and an image in the car 2 photographed by the camera 2 </ b> A is recorded by the image recording device 4 and image analysis is performed by the abnormality determination device 5. The image recorded in the image recording device 4 is used for a subsequent response.

  The image analysis unit 5A discriminates the normal state and abnormal state of the behavior from the image data of the passengers in the car 2 photographed by the camera 2A based on various kinds of behavior information stored in advance. For example, a behavior abnormality signal is output to the abnormality determination unit 5B.

  On the other hand, the determination permission unit 5D determines a position where the window 2E faces (overlaps) the window 2G based on the traveling position information of the car 2 input from the operation control device 3, and the window 2E slightly overlaps the window 2G. However, a determination prohibition signal is output to the abnormality determination unit 5B immediately before the car 2 comes to a position where there is a possibility that external light may enter the car 2 from the landing.

  In the abnormality determination unit 5B, when there is an input of a determination prohibition signal, that is, when the window 2E overlaps the window 2G and is influenced by external light, the behavior abnormality signal from the image analysis unit 5A is output to the abnormality command unit 5C as it is. It is prohibited to do.

  On the other hand, when there is no input of the determination prohibition signal, that is, when the determination is permitted that the window 2E does not overlap the window 2G, the abnormality instruction unit determines that the behavior abnormality signal from the image analysis unit 5A is correct (allowed). Output to 5C.

  Upon receipt of the abnormality signal, the abnormality command unit 5C transmits an abnormality command signal for the nearest floor stop or warning announcement to the operation control device 3. The operation control device 3 that has received the abnormality command signal decelerates the traveling car 2 to stop at the nearest floor with respect to the car 2, stops the car 2 at the nearest floor, Open the landing door 2F.

  At the same time, a warning announcement is made to stop at the nearest floor because an abnormal behavior has occurred in the speaker 2B in the car 2, and the passenger in the car 2 is notified of the occurrence of the abnormal behavior.

  Further, an instruction to display a warning image indicating that an abnormality has occurred on the monitor 2C in the car 2 or an image in the car 2 is made, and a warning image stored in advance or an image in the car 2 are displayed. The occurrence of a behavioral abnormality is also notified to the passengers in the car 2 from the monitor 2C.

  Although not shown, a speaker 2B and a monitor 2C are also installed at each platform, and a warning announcement from the speaker 2B and a warning image by the monitor 2C or an image in the car 2 are displayed in the same manner as in the car 2. It can also be done. Accordingly, it is possible to notify the people waiting at the landing that a passenger behavior abnormality has occurred in the car 2.

  When the car 2 is traveling in the vicinity of the landing, the window 2E of the car door 2D overlaps with the window 2G of the landing door 2F, so that external light enters the car 2 and the passenger's behavior determination by the camera 2A is It becomes difficult. However, the time in which the window 2E overlaps with the window 2G while the car 2 is traveling is extremely short, and outside light does not enter at a position where the windows 2E and 2G do not overlap, and the behavior determination by the camera 2A is appropriately performed.

  In the embodiment, the rotary encoder 1F connected to the motor 1C is used to detect the traveling position of the car 2. However, for example, an optical sensor or the like is located at a position facing the car 2 near each landing on the hoistway 1. It is also possible to install a sensor and detect the traveling position of the car 2 by the position sensor.

  It is also possible to install other alarm means such as an alarm lamp instead of the speaker of the embodiment. Further, the present invention is not limited to the above-described embodiment, and includes various modifications.

  The car traveling position detecting means described in the claims corresponds to the rotary encoder 1F and the elevator operation control device 3 in the embodiment. The image acquisition means corresponds to the camera 2A in the embodiment. The abnormality determination means corresponds to the image analysis unit 5A and the abnormality determination unit 5B in the embodiment. The determination permission unit corresponds to the determination permission unit 5D in the embodiment. In the embodiment, the notification means corresponds to a speaker and a monitor.

  As described above, the present invention does not require a complicated configuration, and can perform abnormality monitoring reliably and inexpensively as compared with the prior art.

DESCRIPTION OF SYMBOLS 1 Hoistway 1F Rotary encoder 2 Car 2A Security camera 2B Speaker 2C Monitor 2D Car door 2E, 2G Window
2F landing door 3 elevator operation control device 4 image recording device 5 abnormality determination device 5A image analysis unit 5B abnormality determination unit 5C abnormality command unit 5D determination permission unit

Claims (5)

There are windows on the car door and landing door,
A car travel position detecting means for detecting a travel position of the car in the hoistway;
Image acquisition means for acquiring an image in the car installed so that the window of the car enters the field of view;
Comprising an abnormality determining means for analyzing a behavior of a passenger in a car from an image acquired by the image acquiring means and determining a behavior abnormality,
Based on travel position information from the car travel position detection means, when the car window is not facing a landing window, the abnormality determination means determines behavioral abnormality. Anomaly monitoring device. In the elevator abnormality monitoring device according to claim 1,
Based on the travel position information from the car travel position detection means, a determination prohibition signal is output when the car window faces the landing window, and the car window faces the landing window. When not doing so, without providing the determination prohibition signal, providing a determination permission means for permitting the abnormality determination means to determine the behavior abnormality,
The abnormality determination unit does not determine behavioral abnormality when the determination permission unit outputs the determination prohibition signal, and performs behavioral abnormality determination when the determination permission unit does not output the determination prohibition signal. An elevator abnormality monitoring device characterized by the above. In the elevator abnormality monitoring device according to claim 1 or 2,
An elevator abnormality monitoring device characterized in that, when a behavior abnormality is judged by the abnormality judging means, the car is stopped at the nearest floor and the door of the car and the door of the landing are opened. In the elevator abnormality monitoring device according to any one of claims 1 to 3,
Further, an alarm means is installed in the car, and when a behavior abnormality is determined by the abnormality determination means, a behavior abnormality is notified to passengers in the car through the notification means. Anomaly monitoring device. In the elevator abnormality monitoring device according to claim 4,
An elevator abnormality monitoring device characterized in that a notification means is also installed at the landing and the behavior abnormality is notified by the notification means in the car and the notification means at the landing.