JPH0286580A - Remote monitor for elevator - Google Patents

Abstract

PURPOSE:To grasp the status of things in a cage and thereby take proper action by installing an image pickup device in the cage, and constituting it so as to take out a video signal of this image pickup device at time of being required at the side of a monitor sensor as there is no response by an interphone and so on. CONSTITUTION:When an interphone 1b in a cage 1a comes into a state of being operated, an image pickup device 1c photographs the status of things in the cage 1a, outputting the video signal to a terminal controller 1c' which stores this outputted video signal in a memory means 1f. On the other hand, a monitor sensor 2 issues a question or indication to the interphone 1b in the cage 1a or when any response to this question and the response is indistinct, the video signal stored in the memory means 1f by a video signal calling means 2a is taken out via a telephone line 3. With this constitution, the status of things in the cage 1a is graspable as a screen image, so that proper measures are performed on the basis of this image.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote monitoring device for elevators and escalators that monitors a large number of elevators and escalators installed in a large number of buildings at one monitoring center.

[Prior Art] A remote monitoring device is a device that monitors various equipment in a large number of buildings from a monitoring center located at one location. One of the equipment that is subject to monitoring is an elevator. This monitoring of elevators and escalators will be explained using diagrams.

FIG. 2 is a block diagram of a conventional remote monitoring device. In the figure, 1 is a building, 1a is an elevator car provided in the building 1, 1b is an interphone provided in the elevator car 1a,
1c is a terminal control device provided in the building 1.

A monitoring center 2 monitors the status of the car 1a and the cars of a plurality of other buildings, and is equipped with a control device 2a and an intercom 2b. 3 is a telephone line wired between the building 1 and the monitoring center 2.

The operation of the conventional remote monitoring device shown in FIG. 2 will be explained. When an accident occurs in the car 1a in the building 1 and a passenger activates the intercom 1b to report the accident,
The alarm from the intercom 1b is automatically transmitted to the control device 2a in the monitoring center 2 via the telephone line 3 by the terminal control device C1c.

Direct communication between the intercom 1b in the building 1 and the intercom 2b in the monitoring center 2 becomes possible. The above applies even if there is no caretaker or similar person in the building 1, that is, even if the building 1 is unoccupied, the intercom 1b
This means that the intercom 2b automatically becomes available for communication, and appropriate instructions and responses will be given by the elevator specialist in the monitoring center 2 in response to this accident.

[Problems to be Solved by the Invention] As described above, when the interphone 1b in the car 1a is activated, the interphone 1b and the interphone 2b of the monitoring center 2 automatically become in a communication state, and first the monitoring center The handling of the accident begins when the engineer on the second side issues a question or instruction to the passengers in the cabin 1a. By the way, when an accident occurs that requires the use of the intercom 1b, the passengers are not in a normal state and are rarely calm enough to have a conversation.
The patient may be unable to respond to the engineer's questions or instructions, or in extreme cases may be in a state of fainting. In such a case, there is naturally no response to questions or instructions, and the engineer not only feels extremely anxious, but also has to take steps to rescue the passengers without being able to grasp the situation inside car 1a. Naturally, this creates the inconvenience of having to deal with the situation inappropriately.For example, if there was an appropriate response from within 18 to a question, it would have been an accident in which only one passenger could have responded. However, intercom 1b in car 1a may cause an undesirable situation in which a specialist engineer is dispatched to no accident, or conversely, a specialist engineer is not dispatched in response to an accident that requires dispatch. It is often the case that the device is activated by mischief, and even in this case, there is rarely a response, resulting in the above-mentioned inconvenience. In other words, in this case, there will definitely be no need to dispatch specialized engineers.

The purpose of the present invention is to solve the above-mentioned problems of the prior art, and to enable technicians at a monitoring center to reliably grasp the situation inside the car even if there is no response from the intercom inside the car, and to take appropriate measures. The purpose of the present invention is to provide a remote monitoring device for elevators.

[Means for Solving the Problems] In order to achieve the above object, a first invention provides an elevator car equipped with an interphone, a monitoring center that monitors the elevator car, and a monitoring center that monitors the elevator car, and a monitoring center that monitors the elevator car. A remote monitoring device comprising a terminal control device that sends signals to a monitoring center and inputs and processes signals from the monitoring center, and a telephone line connecting the terminal control device and the monitoring center.

an imaging device attached to the elevator car; a storage device provided in the terminal control device for storing video signals from the imaging device; and a storage device provided in the monitoring center for storing the signals stored in the storage device through the telephone line. The present invention is characterized in that it is provided with a video signal calling means for taking out the video signal through the video signal.

Moreover, the second invention is an elevator car equipped with an intercom,
A monitoring center that monitors this elevator car.

A remote monitoring device comprising a terminal control device that sends the output of the intercom to the monitoring center and inputs and processes signals from the monitoring center, and a telephone line connecting the terminal control device and the monitoring center. An imaging device attached to the elevator car, a compression conversion means for compressing and converting an output signal of the imaging device, and a storage device provided in the terminal control device for storing the signal converted by the compression conversion means. , video signal calling means provided in the monitoring center and retrieving signals stored in the storage means via the telephone line.

[Operation K-- In the first invention, when the intercom in the car is activated, the imaging device provided in the car images the situation inside the car and outputs the video signal to the terminal control device. The terminal control device stores the output video signal in storage means. Meanwhile, at the monitoring center.

Issue questions or instructions to the intercom in the car, or
When no response is obtained or the response is unclear, the video signal stored in the storage means is retrieved by the video signal calling means via the telephone line, thereby grasping the situation inside the car as a video image. and take appropriate action based on this.

Further, in a second invention, the video signal in the first invention is once compressed by a compression conversion means, and the compressed data is stored in a storage means. This greatly reduces the amount of signals transmitted over the telephone line.

[Example code] Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 is a block diagram of a remote monitoring device for an elevator according to an embodiment of the present invention. In the figure, parts that are the same as those shown in FIG. 2 are given the same reference numerals, and explanations thereof will be omitted. lc' is the second
This terminal control device corresponds to the terminal control device ale shown in the figure, but differs from the former in that it has a storage bag ff1lf, which will be described later. 1d is a camera installed at a suitable location 1 within the heel 18, for example, at a corner of the ceiling, and 1e is an encoder that processes the video signal captured by the camera 1d. 1f is terminal control device 1c
' is a storage device provided in the encoder 1e, and stores the signal processed by the encoder 1e. 2c is a display device provided in the monitoring center 2, and 2d is a decoder that creates a signal to be displayed on the display device 2c based on the signal output from the storage device 1f.

Next, the operation of this embodiment will be explained. In a normal state in which the intercom 1b is not operated, the code lie is not operated, and therefore the video signal of the camera 1d is not processed by the decoder 1e and is not stored in the storage device 1f.

On the other hand, when the intercom 1b is activated.

The terminal control device 1c' connects the interphone 1b and the interphone 2b via the telephone line 3, operates the decoder 1e to process the video signal from the camera ld, and stores the processed signal in the storage device 1f. . Here, an example of video signal processing by the encoder 1e will be briefly described. In this embodiment, the video signal from the camera 1d is an analog value, and a device for converting it into a digital value is included in the encoder le. This video signal is output as a signal for each pixel arranged in multiple stages from one end of the video to the other end. On the other hand, code 8!1e outputs the video signal of the pixel at one end as it is, calculates the difference with the video signal of the previous pixel after the first pixel, and outputs the signal of the difference to the storage device 1f. do. This operation is performed in multiple stages. Therefore, although the video signal of the pixel at one end is composed of a large number of bits, the video signals of the other pixels can be composed of a small number of bits.

As described above, when the encoder 1e has created @rL and its (i) has been stored in the storage device 1f, when a technician at the monitoring center 2 uses the intercom 2b to inquire or instruct the intercom 1b. If there is a response from the passenger in the car from the intercom 1b, processing is carried out in the normal manner.However, if there is no response from the passenger in the car, the technician at the monitoring center 2 sends the information to the terminal control device 1c'. A command is issued to send out the signal stored in the device 1f.

In response to this command, the terminal control device 1c' outputs the video signal stored in the storage device 1f to the monitoring center 2 via the telephone line. In this case, since the video signal is simplified (compressed) by the encoder 1e as described above, the amount of information in the video signal transmitted through the telephone line 3 is extremely small.

The video signal received by the control table 712a of the monitoring center 2 is decoded by the decoder 2d. That is, decoder 2
In step d, processing is performed to sequentially add difference signals using the signal at one end of the input video signal as a reference. As a result, the video signal output from the decoder 2d is equivalent to the video signal output from the camera 1d, and is displayed on the display device 2c almost unchanged from the video imaged by the camera 1d. The technician can grasp the situation inside the car 1a by looking at the image displayed on the display device 2c, and can thereby perform appropriate processing even if there is no response from one passenger.

In this way, in this example, a camera is installed inside the car, and if there is no response from the passenger through the intercom, the camera image is displayed on the display device of the monitoring center, so that the situation inside the car can be accurately grasped. This allows appropriate measures to be taken. In addition, since the video signal of the camera is compressed by the decoder, the amount of information in the video signal can be significantly reduced, and the video signal can be transmitted over a telephone line in a short time. A storage device with a small storage capacity can be used.

Furthermore, since a camera is provided inside the car, it can be used to prevent mischief by making the person who is trying to play a prank psychologically aware of the fear that the prank will be discovered.

In addition, in the description of the above embodiment, an example using an encoder and a decoder has been described, but these are not necessarily necessary, and the video signal may be exchanged as it is without being subjected to any processing.

[Effects of the Invention] As described above, in the first invention, an imaging device is provided in the car, and the video signal of the imaging device is extracted when necessary on the monitoring center side, such as when there is no response from the intercom. , the situation inside the car can be accurately grasped, and appropriate measures can be taken. Furthermore, by providing the imaging device inside the cage, mischief can be suppressed. Furthermore, in the second invention, the video signal of the imaging device is compressed and sent out, so in addition to the effects of the first invention, the video signal can be sent out quickly, and the storage device can be It also has the effect of reducing storage capacity.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a remote monitoring device for an elevator according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional remote monitoring device. 1...Building, 1a...Elevator cage,
1b...Interphone, lc'...Terminal control device, 1d...Camera, 1e...
Encoder, 1f...Storage device, 2...Monitoring center, 2a...Control device, 2b...
・Interphone, 2c...Display device, 2d...
...Decoder, 3...Telephone line. Figure 1 t 1 Please refer to the list of existing buildings 2) f 3 Recirculation Figure 2

Claims (3)

[Claims] (1) An elevator car equipped with an interphone, a monitoring center that monitors the elevator car, and a terminal control device that sends the output of the interphone to the monitoring center and inputs and processes signals from the monitoring center. , in a remote monitoring device comprising a telephone line connecting the terminal control device and the monitoring center, an imaging device attached to the elevator car and a video signal of the imaging device provided in the terminal control device are stored. A remote monitoring device for an elevator, characterized in that it is provided with a storage means for storing the data, and a video signal calling means provided in the monitoring center and retrieving the signal stored in the storage means via the telephone line. (2) A remote monitoring device for an elevator according to claim (1), wherein the imaging device is activated when the intercom is activated. (3) An elevator car equipped with an interphone, a monitoring center that monitors the elevator car, and a terminal control device that sends the output of the interphone to the monitoring center and inputs and processes signals from the monitoring center. , a remote monitoring device comprising a telephone line connecting the terminal control device and the monitoring center, an imaging device attached to the elevator car, a compression conversion means for compressing and converting an output signal of the imaging device; A storage means provided in the terminal control device for storing the signal converted by the compression conversion means; and a video signal calling device provided in the monitoring center for retrieving the signal stored in the storage means via the telephone line. A remote monitoring device for an elevator, characterized in that it is provided with: