JPS6216072B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for monitoring the inside of a plurality of elevator cars.

When the elevator car door is closed, it becomes a closed space, and crimes have taken advantage of this to assault passengers (particularly women) inside the car.
In order to prevent this, an industrial television camera is installed inside the car to take pictures of the situation inside the car, and a microphone is installed to receive the audio inside the car. Remote monitoring is carried out in central monitoring rooms such as

However, it is difficult for attendants to monitor multiple television receivers at once, and they must monitor each car individually, so when a crime occurs in a car, there may be a delay in discovering it. .

This invention is intended to improve the above-mentioned problem, and when a person's abnormality occurs in one of the multiple cars,
To provide an elevator monitoring device capable of quickly discovering an abnormal location and dealing with it by connecting a transmitting device at that location and a receiving device in a monitoring room.

One embodiment will be described below with reference to FIGS. 1 and 2.

In the figure, 1A to 1N are industrial television cameras (hereinafter referred to as television cameras) installed in the elevator cabs of cars A to N, 2A to 2N are the same speakers, 3A to 3N are the microphones, and 3Aa to N are the same speakers. 3Na is the audio signal, 4A to 4N are monitoring request circuits in which the outputs 4Aa and 4Na become "H" when the audio signals 3Aa to 3Na (described later in FIG. 2) exceed a certain value, and 5A to 5N are issued in this order. Scanning pulse, 6A to 6N are AND gates, 7A to 7
N is a reset button, 8A to 8N are R-S flip-flops (hereinafter referred to as memory), 9A to 9N are monitoring command buttons, 10A to 10N are OR gates,
11 is a counter whose output becomes "H" when two or more inputs become "H"; 12 is an AND gate 6A to 6;
N, reset button 7A-7N, memory 8A-8
N, monitoring command buttons 9A to 9N, OR gate 10
A selection circuit consisting of A to 10N and a counter 11, 1
3A to 13N are gate circuits that output input I when input G becomes "H"; 14 is a monitoring board consisting of a television receiver, speaker, microphone, etc.;
15A to 15N are monitoring request location indicator lights, 16 is
OR gate, 17 is a reset switch, 18 is an alarm such as a bell or buzzer, 20A is an amplifier, 21A
is a high-pass filter that passes only high frequency components, 22A and 23A are smoothing filters, and 24A and 2 are smoothing filters.
5A is a constant value, 26A and 27A are input A
The comparator 28A is an OR gate whose output is "H" when the input is B and "L" otherwise. Note that all the television cameras 1A to 1N, the speakers 2A to 2N, and the microphones 3A to 3N are installed at the monitoring location.

Next, the operation of this embodiment will be explained.

Now, when an abnormality occurs in the car cabin of Car A, and a passenger screams or other noises occur, an audio signal 3Aa is emitted from the microphone 3A. This is amplified by the amplifier 20A of the monitoring request circuit 4A, and its output is smoothed by the smoothing filter 22A. When the output of the smoothing filter 22A exceeds a certain value 24A, the output of the comparator 26A becomes "H", and the output 4Aa of the OR gate 28A, that is, the output of the monitoring request circuit 4A, becomes "H". Further, the high frequency component corresponding to the woman's scream in the amplifier 20A passes through a high pass filter 21A and is smoothed by a smoothing filter 23A. And the output is a constant value 25
When the voltage exceeds A, the output of the comparator 27A becomes "H" and the output 4Aa of the OR gate 28A becomes "H".

When the output 4Aa of the monitoring request circuit 4A becomes "H", the monitoring request location indicator light 15A lights up. Further, the output of the OR gate 16 becomes "H" and the alarm 18 sounds. This notifies the staff that an abnormality has occurred in the car of car A. On the other hand, counter 1
Since the output of gate 1 is "L", when the scanning pulse 5A becomes "H", the output of AND gate 6A becomes "H".
Therefore, the memory 8A is set and its output Q becomes "H". With this, the output of the OR gate 10A also becomes "H", the gate circuit 13A is opened, and the television camera 1A is connected to the receiver of the monitoring panel 14.
The staff can immediately begin monitoring the inside of the car in Car A. Furthermore, since the speaker 2A and the microphone 3A are also connected to the monitoring panel 14, the staff member can talk to the person inside the A car, and can give a warning to the criminal and call on him to prevent the crime.

Furthermore, by pressing the monitoring command buttons 9A to 9N, the staff member can open any of the gate circuits 13A to 13N via the OR gates 10A to 10N.
The status of a desired cab can be monitored. Moreover, if the reset buttons 7A to 7N are pressed after use, the memories 8A to 8N are reset and the monitoring operation ends.

It is also possible to implement as follows.

(A) TV cameras 1A to 1N are not used, and only speakers 2A to 2N and microphones 3A to 3N are installed.

(b) AND of the outputs of comparator 26A and comparator 27A
Automatic monitoring is performed when the conditions, that is, the passenger's volume level and scream level both exceed a certain value.

(c) The monitoring request circuits 4A to 4N are not limited to the embodiments.
It consists of a circuit that detects abnormalities in the following cases.

(a) When vibration of the car wall or car floor is detected.

(b) When touching the handrail inside the car.

(c) When there are only two passengers in the car.

(d) More detailed pattern recognition of the woman's screams,
Increase detection accuracy.

(e) The monitoring location should be the building's manager's room, supervisor's room, lobby of the elevator hall where many people are expected to be, etc.

(F) The number of receivers, speakers, and microphones at the monitored location shall be smaller than the number at the monitored location.

(g) Applies to areas to be monitored, such as outside of elevator cars, inside railway cars, toilets, stairs, underground passages, etc.

As explained above, in this invention, when it is detected that loud or high-pitched audio is generated in any of the multiple cars, the transmitting device installed in that car and the monitoring location are Since a receiving device is connected to the elevator, it is possible to quickly detect and deal with crimes against people, such as elevator abuse, even if the inside of every car is not constantly monitored at the monitoring location.

[Brief explanation of the drawing]

FIG. 1 is a block circuit diagram showing an embodiment of an elevator monitoring device according to the present invention, and FIG.
FIG. 3 is a block circuit diagram of the monitoring request circuit shown in FIG. 1A~1N...Industrial television camera in elevator car room of A~N cars, 2A~2N
...Same left speaker, 3A~3N...Same left microphone, 4A~4N...Monitoring request circuit, 5A~5N
...scanning pulse, 6A to 6N...AND gate,
8A~8N...R-S flip-flop, 10A
~10N...OR gate, 11...Counter, 12
...Selection circuit, 13A to 13N...Gate circuit,
14...Monitoring board. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A signal sent from a transmitter installed in each of a plurality of cars is received by a plurality of receivers installed corresponding to the transmitter at a monitoring location located away from the inside of the car. A monitoring request circuit that is installed at each of the monitoring locations and operates when a sound of a predetermined volume or higher or a sound of a predetermined frequency or higher is transmitted from the transmitter; An elevator monitoring device characterized by comprising a selection circuit that connects the corresponding transmitting device and the receiving device when the request circuit operates.