JP2001151430A - Elevator car inside image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator car inside image recording device for efficiently recording images and simplifying wirings between each of a TV camera and a sensor, installed in an elevator car, and a video deck. SOLUTION: This image recording device comprises a TV camera 9 for photographing a car 6 inside of an elevator, a sensor 10 provided in the car 6 for detecting passengers and a recorder 13 for recording signals for images photographed by the TV camera 9 in accordance with detection signals from the sensor 10. The recorder 13 is provided in a machine room 2, to which image signals from the TV camera 9 and operation signals from the sensor 10 are transmitted via space transfer means 11, 12. The space transfer means 11, 12 are a space-transfer transmission device 11 provided in the car 6 and a space- transfer reception device 12 provided at the top of hoistway 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording apparatus in an elevator car.

[0002]

2. Description of the Related Art As a conventional image recording apparatus in an elevator car, a television camera is installed in the elevator car so that the situation in the car can be grasped.
JP-A-9-92981, JP-A-10-77178, JP-A-4-40080 and JP-A-52-13.
No. 3468 and the like.

[0003] The basic structure of these conventional elevator car image recording devices is composed of a television camera for photographing the inside of the car and a video deck for recording images photographed by the television camera. When any crime occurs, the video recorded on the video deck is reproduced to identify the criminal.

Further, in order to increase the recording time on a video tape, a technology for using a time-lapse VTR for a video deck or storing a video signal of a television camera in the video deck based on a detection signal of a human body detection sensor provided in a car. Was also proposed.

[0005]

The prior art described above requires a video deck to be installed in a machine room located above the hoistway of an elevator or in a manager room where a manager of a building stands by. In addition, it is necessary to add wiring from the television camera to the VCR and wiring for outputting a detection signal of the human body detection sensor. In this case, at least three wirings are required by adding a signal transmission line and a GND line, If the wiring becomes longer, noise or attenuation will occur in the video and detection signals.Addition of wiring in the elevator hoistway will require the existing movement to connect the car to the control panel installed in the machine room. The cables are laid along the cables, and when cables with different hardness are laid, the swing of the cables increases each time the car moves up and down, and the moving cables and laid cables are pulled to the hoistway equipment. Accident that took to be cut has occurred.

When a video deck is provided on a car of an elevator in order to shorten the wiring, the performance of the video deck is reduced due to scattering of dust floating in the hoistway and oil applied to the guide rails. There was also a problem affecting the life.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator car video recording apparatus capable of efficiently recording video and simplifying wiring between a television camera and a sensor installed in the car and a VCR.

[0008]

In order to achieve the above object, the present invention provides a television camera for photographing the inside of a car of an elevator, a sensor provided in the car for detecting a passenger, and a detection signal of the sensor. Thus, in an elevator car video recording device including a recording device that records a video signal captured by the television camera, the recording device is provided in a machine room, and the video signal of the television camera and the operation of the sensor are provided. And a signal transmitted to the recording device by a spatial transmission means, wherein the spatial transmission means comprises a spatial transmission transmitting device provided on a car and a spatial transmission receiving device provided on a top of a hoistway. .

[0009] With this configuration, a spatial transmission means comprising a spatial transmission transmitter provided on the car for transmitting the video signal of the television camera and the detection signal of the sensor to the car, and a spatial transmission receiver provided above the hoistway. It is possible to prevent the video signal from being attenuated and noise from being installed, since it is not necessary to lay a cable for transmitting the video signal between the car and the machine room. The cable does not break due to shaking.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing one embodiment of the in-car video recording apparatus of the present invention, and FIG. 2 is a block diagram showing another embodiment of the in-car video recording apparatus of the present invention.

In FIG. 1, a hoistway 1 is installed in a building 1a in which the elevator is installed, and a machine room 2 is formed above the hoistway 1. The machine room 2 is provided with a hoisting machine 3 and a control panel 4, and the hoisting machine 3 drives a car 6 and a counterweight 7 moving up and down in the hoistway 1 via a wire rope 5. ing. The moving cable 8 is an electric wire having a multi-core structure for electrically connecting the control panel 4 and the car 6.

The car 6 is provided with a television camera 9 for photographing the inside of the car and a sensor 10 for detecting a passenger entering the car 6 and outputting a signal. Also, on the upper part of the car 6, a function of a modulator and a transmitter for wirelessly transmitting, by spatial transmission, a video signal as an output signal of the television camera 9 and a passenger detection signal as an output signal of the sensor 10 are provided. The wireless transmission device 11 which is a spatial transmission transmission device having In addition, the hoistway 1 facing the wireless transmission device 11 provided above the car 6
A wireless receiver 12 which is a spatial transmission receiver for receiving a wirelessly transmitted signal is installed on the top of the receiver, and the wireless receiver 12 demodulates the received wireless signal and returns it to a video signal and a passenger detection signal. These signals are wired so as to be output to a time lapse VTR 13 which is a recording device installed in the machine room 2. Here, time-lapse VTR
The video signal input to the TV 13 is set in the time-lapse VTR 13 in advance so that the video signal is stored on a video tape (not shown) at predetermined time intervals only when the passenger detection signal is input. The spatial transmission means is a wireless transmission device 11
And a wireless receiving device 12.

In the in-car image recording apparatus of the present embodiment configured as described above, the video signal as the output signal of the television camera 9 and the sensor 10 installed in the car 6 and the passenger detection signal are converted to the car 6 Wireless transmission device 1 installed on top
The signal is output after being modulated from 1 to a signal to be wirelessly transmitted at a predetermined frequency. The output wireless signal is received by a wireless receiver 12 disposed on the top of the hoistway 1 so as to face the wireless transmitter 11, and the received wireless signal is a video signal which is an original signal and a passenger. These signals are demodulated into detection signals, and these signals are output to the time lapse VTR 13. Here, the time lapse VTR 13 records the input video signal on a video tape (not shown) at a predetermined time interval, for example, one second, only when the passenger detection signal is input.

According to the present embodiment, since the video signal of the television camera 9 and the passenger detection signal of the sensor 10 are transmitted to the time-lapse video 14 by radio transmission, which is spatial transmission, the hoistway 1 is used. This eliminates the need for cable laying, reduces the effects of noise and attenuation when transmitting the video signal and the passenger detection signal via the cable, and records a clear image with little image disturbance during reproduction.

Next, FIG. 2 shows another embodiment, and the same parts as those in FIG.

In FIG. 2, there is provided a signal superimposing device 14 for superimposing a video signal of the television camera 9 and a passenger detection signal which is an output signal of the sensor 10.
The superimposed signal of the video signal and the passenger detection signal superimposed in the above is output to the wireless transmission device 11, modulated by the wireless transmission device 11 into a signal to be wirelessly transmitted at a predetermined frequency, and output above the hoistway 1. On the other hand, the wireless receiver 1
2, a superimposed signal of the original video signal and the passenger detection signal is demodulated and output to the signal discrimination device 15, and the signal discrimination device 15 converts the superimposed signal of the demodulated video signal and the passenger detection signal into an image. The signal is discriminated into a passenger detection signal and output to the time lapse VTR 13 respectively.

As described above, in the other embodiment shown in FIG. 2, the video signal and the passenger detection signal are superimposed by the signal superimposing device 14 and then modulated by the radio transmitting device 11 into a signal to be transmitted by radio. The superimposed signal demodulated by the device 12 is discriminated into a video signal and a passenger detection signal by the signal discriminating device 15 and then transmitted to the time lapse VTR 13, so that the degree of signal restoration is increased and signal transmission can be performed reliably.

In this embodiment, an example is described in which the time-lapse VTR 13 is used as a recording device. However, a similar effect can be obtained with a normal video deck. In addition, a digital image is encoded, compressed, and stored in the recording device. The same effect can be obtained with a storage device.

Further, in the present embodiment, the spatial transmission means has been described by using the wireless transmission for transmitting and receiving at a predetermined frequency constituted by the wireless transmitting device 11 and the wireless receiving device 12, but the modulated light of infrared rays, laser light and the like are used. It goes without saying that the same effect can be obtained by using the optical transmission technology.

[0021]

According to the present invention, there is provided a spatial transmission transmitting device provided on a car for transmitting a video signal of a television camera and a detection signal of a sensor, and a spatial transmission receiving device provided on an upper shaft. It is possible to prevent the video signal from being attenuated and noise from being installed, since it is not necessary to lay the cable for transmitting the video signal between the car and the machine room by transmitting it to the recording device via the means. The moving cable does not break due to shaking.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an embodiment of an in-car video recording apparatus of an elevator according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the in-car video recording device of the elevator of the present invention.

[Explanation of symbols]

 Reference Signs List 1 hoistway 2 machine room 4 control panel 6 car 8 moving cable 9 TV camera 10 sensor 11 wireless transmitting device 12 wireless receiving device 13 time lapse VTR

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Atsumi Harimoto, Inventor 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan Inside the Hitachi Building System Co., Ltd. (72) Tomoaki Suzuki 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo, Japan F-term in Hitachi Building Systems, Ltd. (reference) 3F303 BA06 CB24 EA09 FA14

Claims (3)

[Claims] 1. A television camera for photographing an inside of a car of an elevator, a sensor provided in the car for detecting a passenger, and a recording for recording a video signal photographed by the television camera based on a detection signal of the sensor. A video recording device in an elevator car equipped with a device, wherein the recording device is provided in a machine room, and a video signal of the television camera and an operation signal of the sensor are transmitted to the recording device by a spatial transmission unit. An elevator car video recording device, characterized in that: 2. The elevator car according to claim 1, wherein said spatial transmission means comprises a spatial transmission transmitter provided on a car and a spatial transmission receiver provided on a top of a hoistway. Video recording device. 3. The elevator according to claim 1, wherein a video signal of the television camera and an operation signal of the sensor are superimposed on each other, and the superimposed signal is spatially transmitted. In-car video recording device.