JPH085599B2 - Elevator remote monitoring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a remote monitoring device for an elevator, which monitors a large number of elevators installed in a large number of buildings at a single monitoring center.

[Prior Art] A remote monitoring device is used for various equipments of many buildings.
It is a device that monitors at a monitoring center at a certain place. An elevator is one of the equipment to be monitored. The monitoring of this elevator will be described with reference to the drawings.

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 intercom provided in the car 1a, and 1c is a terminal control device provided in the building 1. Reference numeral 2 denotes a monitoring center for monitoring the condition of the car 1a and the car of a plurality of other buildings, and includes a control device 2a and an intercom 2b. Reference numeral 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 described.
When an accident occurs in the car 1a in the building 1 and the passenger activates the intercom 1b to report the accident, the intercom 1b is automatically controlled by the terminal control device 1c in the monitoring center 2. The call is transmitted to the device 2a via the telephone line 3, and a direct call can be made between the intercom 1b in the building 1 and the intercom 2b in the monitoring center 2. The above is
Even if there is no manager or similar person in the building 1, that is, even if the building 1 is unattended, the intercom 1b
Means that the intercom 2b is automatically in a callable state, and an appropriate elevator operator in the monitoring center 2 gives an appropriate instruction and response to this accident.

[Problems to be Solved by the Invention] As described above, when the intercom 1b in the car 1a is activated, the intercom 1b and the intercom 2b of the monitoring center 2 are automatically put in a call state, and first, the monitoring center The technician on the second side issues a question or an instruction to the passengers in the car 1a to start processing the accident. by the way,
In the event of an accident requiring the use of intercom 1b, the passenger is not in a normal state and is often accompanied by the calmness with which he or she is able to talk, and in response to a technician's question or instruction. In some cases, there is no room to respond, or in extreme cases, it may be faint.
In such a case, of course, there is no response to the question or instruction, and the technician is not only extremely worried,
The passenger rescue procedure must be carried out without being able to grasp the situation in the car 1a, which naturally causes an inconvenience that it must be an inappropriate procedure. For example, if there is an appropriate response from the car 1a to the question, it is an accident that the passengers can fully respond to, but in vain the dispatch of specialists, or vice versa. An unfavorable situation occurs in which the dispatch is neglected in the case of an accident that requires dispatch.

In addition, the intercom 1b in the car 1a is often activated due to mischief, and in this case too, a response is rare, and the above-mentioned inconvenience still occurs. That is,
In this case, the dispatch of the expert engineer is certainly wasted.

An object of the present invention is to solve the above-mentioned problems of the prior art, and even if there is no response from the intercom in the car, the technician of the monitoring center can surely grasp the situation in the car and take appropriate measures. An object of the present invention is to provide a remote monitoring device for an elevator.

[Means for Solving the Problems] In order to achieve the above object, a first invention is an elevator car including an interphone, a monitoring sensor for monitoring the elevator car, and an output of the intercom to the monitoring center. A remote control device comprising a terminal control device for transmitting and receiving a signal from the monitoring center for processing, and a telephone line connecting the terminal control device and the monitoring center, is attached to the elevator car. An image pickup device, a storage unit provided in the terminal control unit for storing a video signal of the image pickup unit, and a video signal call for taking out a signal stored in the storage unit provided in the monitoring center via the telephone line And means are provided.

In a second aspect of the invention, an elevator car equipped with an intercom, a monitoring center for monitoring the elevator car, and an output of the intercom to the monitoring center and a signal from the monitoring center are input and processed. In a remote monitoring device including a terminal control device and a telephone line connecting the terminal control device and the monitoring center, an image pickup device attached to the elevator car, and a compression for compressing and converting an output signal of the image pickup device. A conversion unit, a storage unit provided in the terminal control device for storing the signal converted by the compression conversion unit, and a signal provided in the monitoring center and stored in the storage unit are taken out through the telephone line. A video signal calling means is provided.

[Operation] In the first invention, when the intercom in the car is activated, the imaging device provided in the car captures an image of the situation in the car and outputs the video signal to the terminal control device. The terminal control device stores the output video signal in the storage means. On the other hand, in the monitoring sensor, when the question or instruction is issued to the intercom in the car, or when the response to this is not obtained or the response is unclear, the video signal stored in the storage means by the video signal calling means. By taking out via the telephone line, the situation inside the car can be grasped as a video, and appropriate measures will be taken based on this.

Further, in the second invention, the video signal in the first invention is once compressed by the compression conversion means, and the compressed data is stored in the storage means. As a result, the amount of signal transmitted through the telephone line is greatly reduced.

[Examples] Hereinafter, the present invention will be described based on illustrated examples.

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, the same parts as those shown in FIG. 1c 'is a terminal control device corresponding to the terminal control device 1c shown in FIG. 2, but is different from the former in having a storage device 1f described later.
Reference numeral 1d is a camera provided at a proper place in the car 1a, for example, a corner of the ceiling, and reference numeral 1e is an encoder for processing a video signal imaged by the camera 1d. 1f is a storage device provided in the terminal control device 1c ', and stores the signal processed by the encoder 1e. Reference numeral 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 described. In a normal state where the intercom 1b is not operated, the encoder 1e is not operated, and thus 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 intercom 1b and the intercom 2b to the telephone line 3
And the decoder 1e is operated to process the video signal from the camera 1d, and the processed signal is stored in the storage device 1f. Here, an example of the video signal processing of the encoder 1e will be briefly described. In the case of the present 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 1e. This video signal is output as a signal for each pixel arranged in multiple stages from one end to the other end of the image. On the other hand, the encoder 1e outputs the video signal of the pixel at the one end as it is, calculates the difference from the video signal of the previous pixel after the next pixel, and outputs the signal of the difference to the storage device 1f. . This operation is performed in multiple stages. Therefore, while the video signal of the pixel at the 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, the encoder 1e operates and its signal is stored in the storage device 1f.
When the technician of the monitoring center 2 uses the intercom 2b to inquire or give an instruction to the intercom 1b in the state stored in, the processing is performed in a normal manner when the intercom 1b responds to the passenger in the car. Be done. However, when there is no response from the passenger in the car, the technician of the monitoring center 2 issues a command to the terminal control device 1c 'to send out the signal stored in the storage 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 information amount of the video signal via the telephone line 3 is extremely small.

The video signal received by the control device 2a of the monitoring center 2 is
It is decrypted in the decoder 2d. That is, in the decoder 2d,
With the signal at the one end of the input video signal as a reference, a process of sequentially adding signals of differences is performed. As a result, the video signal output from the decoder 2d becomes the same as the video signal output from the camera 1d, and is displayed on the display device 2c while being almost the same as the video imaged by the camera 1d. The technician looks at the image displayed on the display device 2c and
By grasping the situation in 1a, it is possible to perform appropriate processing without the passenger's response.

Thus, in this embodiment, the camera is provided in the car,
When the passenger does not respond from the intercom, the video of the camera is displayed on the display device of the monitoring center, so that the situation inside the car can be accurately grasped, and appropriate measures can be taken. Further, since the video signal of the camera is compressed by the decoder, the amount of information of the video signal can be greatly reduced, and the video signal can be sent using the telephone line in a short time, and A storage device with a small storage capacity can be used. Further, since the camera is provided in the car, the person who tries to perform mischief can be psychologically aware of the mischief and can be useful for preventing mischief.

In the description of the above embodiment, an example in which the encoder and the decoder are used has been described, but these are not necessarily required, and the video signal may be directly transmitted and received without being processed.

[Effects of the Invention] As described above, in the first invention, the image pickup device is provided in the car, and the video signal of the image pickup device is taken out when necessary at the monitoring center side such as when there is no response from the intercom. , The situation in the car can be accurately grasped and appropriate measures can be taken. Further, by providing the image pickup device in the car, it is possible to suppress mischief. Further, in the second invention, the video signal of the image pickup device is compressed and sent out. Therefore, in addition to the effect of the first invention, the video signal can be sent out quickly and the storage device It also has the effect of reducing the storage capacity.

[Brief description 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 basket, 1b ... Intercom,
1c ′ …… Terminal control device, 1d …… Camera, 1e …… Encoder,
1f ... storage device, 2 ... monitoring center, 2a ... control device,
2b …… Intercom, 2c …… Display device, 2d …… Decoder, 3
……telephone line.

Claims (3)

[Claims] 1. An elevator car equipped with an intercom, a monitoring sensor for monitoring the elevator car, and a terminal control for sending an output of the intercom to the monitoring center and for receiving and processing a signal from the monitoring center. In a remote monitoring device comprising a device, a telephone line connecting the terminal control device and the monitoring center, an image pickup device attached to the elevator car, and a video signal of the image pickup device provided in the terminal control device. And a video signal calling means provided in the monitoring center for taking out the signal stored in the storage means via the telephone line. 2. The image pickup device according to claim 1,
A remote monitoring device for an elevator, which is activated when the intercom is activated. 3. An elevator car equipped with an intercom, a monitoring center for monitoring the elevator car, and a terminal control for sending the output of the intercom to the monitoring center and for inputting and processing signals from the monitoring center. In a remote monitoring device composed of a device, a terminal control device, and a telephone line connecting the monitoring center, an imaging device attached to the elevator car, and a compression conversion means for compressing and converting an output signal of the imaging device. And a storage means provided in the terminal control device for storing the signal converted by the compression conversion means, and a video signal for taking out the signal stored in the storage means provided in the monitoring center via the telephone line. A remote monitoring device for an elevator, comprising a calling means.