JP5225650B2 - Elevator management system - Google Patents

Description

  The present invention relates to an elevator management system.

In conventional elevators, elevator manufacturers have built various accident prevention systems to prevent accidents and incorporate them into elevators, shafts, drive mechanisms, and control mechanisms.
As such, it should function as an independent safety system.
In reality, however, many accidents involving people are frequently occurring.

JP-A-6-16354. JP 2004-91176 A.

When investigating the causes of these accidents, the conventional elevator monitoring system may be due to the fact that it is a closed circuit that was developed and installed by the manufacturer of the elevator. I can guess.
In other words, the current elevator safety system relies on the development capabilities within a single company, and there is no audit system from a third-party perspective.
Therefore, the construction of a monitoring system by a third party other than the manufacturer of the target elevator is expected.

In order to solve the above-described problems, an elevator safety management system according to the present invention is an existing elevator in which a safety management circuit that has been installed in advance is completed, and includes an interior of an elevator car and a control room. In an elevator in which an audio circuit is connected, an extraction circuit for extracting a signal from the audio circuit is connected to the audio circuit, and the signal from the extraction circuit is connected to an external control center via a wireless network. Configured to be able to transmit via
The extraction circuit is characterized by comprising a determination device having a detection function for detecting a baseband signal and a signal modulated with digital data for detecting an audio signal of a certain value or more. It is.

Since the elevator management system of the present invention is as described above, the following effects can be obtained.
<1> The safety management circuit installed at the time of installation of the elevator should be able to perform the safety management function sufficiently.
However, by providing a new management circuit independent of the previously installed device, more reliable independent safety management can be performed from another viewpoint.
<2> When a third party retrofits a monitoring system that is independent of the elevator manufacturer, a “cage” that always moves up and down, and special equipment is required to send and receive signals to the outside, which is expensive. End up.
However, in the present invention, since an existing audio circuit is used, complicated wiring for connecting the moving car and the outside is unnecessary.
<3> Even if a person in the car does not push or cannot push the manual switch, an abnormality can be detected outside.
<4> If an abnormality is detected, a crime or the like can be suppressed by simply asking safety from the outside by automatic voice.
<5> The manager side does not wait passively until the manual switch is pushed, but has a commercial value as a system that makes an active call by automatically detecting a sound or vibration of a certain value abnormality.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

<1> Precondition.
The system of the present invention is a system that is additionally installed afterwards in an elevator for which a safety management circuit has been completed in advance.
The system of the present invention is an elevator safety management system that newly installs a circuit independent of the existing safety management circuit installed in advance and performs safety management independent of the existing circuit.
Of course, the existing elevators are also equipped with various safety devices that have been researched.
However, as noted in the prior art, conventional elevator monitoring systems are closed circuits developed and installed by elevator manufacturers.
Since this is a closed circuit developed and installed in one company, there is no third-party audit system, which is considered one of the causes of recent elevator accidents. .
In that respect, the system of the present invention is installed by a third party from the outside in the elevator system that has already been installed.
Therefore, the function as a monitoring system by a third party other than the manufacturer of the elevator can be fulfilled, and more reliable safety management can be expected.

<2> Diversion of audio circuit.
The elevator car 2 always moves up and down in the shaft 6.
It is not easy to add and install a system for extracting signals from such a constantly moving car 2 with a wired circuit without cost and time.
In particular, in an elevator in which a large number of cables are already arranged inside the narrow shaft 6, it is very uneconomical to add cables and wiring, which requires a great deal of labor, cost and time.
In that respect, the system of the present invention uses the existing audio circuit 1 that connects the management room 3 in the same building as the elevator car 2.
As described above, the audio circuit 1 is installed in every existing elevator car 2.
Therefore, a signal extraction circuit 9 is connected in the middle of the audio circuit 1 for use in safety management.

<3> Use of a microphone or the like.
Using the take-out circuit 9, the existing microphone 11 and speaker 12 in the car 2 are used.
That is, the speaker 12 and the microphone 11 are always installed inside the elevator car 2.
The voice inside the elevator car 2 is picked up from the microphone 11 and transmitted to the remote control center 7 via the wired or wireless network 8 by the take-out circuit 9.
On the other hand, the speaker 12 can be used for an active call from the control center 7 side into the car 2.
That is, a user in the car 2 uses a speaker 12 installed in the car 2 to send a signal of automatic reproduction of the voice of the supervisor from the control center 7 or the like through the network 8 or the recorded voice. It is used to call on.
In this manner, the audio signal from the microphone 11 in the car 2 and the audio from the speaker 12 are extracted using the extraction circuit 9 connected in the middle of the existing audio circuit 1.

<4> Intervening determination device.
The determination circuit 4 is interposed in the take-out circuit 9 described above.
That is, the determination device 4 is installed in the middle of the take-out circuit 9 that directly and indirectly connects the elevator car 2 and the control center 7.
This determination device 4 is a device that can detect when an audio signal of decibels of a certain value or more is input.
For example, a determination device having a function of detecting a baseband signal and detecting / determining a signal obtained by modulating digital data to detect an audio signal of a certain value or more is used.
Or it is an apparatus which can detect the case where the same audio | voice continues for the time more than fixed time.
As described above, the microphone 11 is installed inside the elevator car 2, but it is not always possible to make a call via the microphone 11 when a crime or other emergency has occurred inside the car 2. .
In the case of a crime, the offender naturally tries to prevent the victim from using the microphone 11 for transmission.
In that case, if a signal that exceeds a certain value or a signal that continues for a certain period of time can be detected in the sound that has passed through the microphone 11, the victim may be loud or an abnormal sound may be generated due to an accident. Since it is understood, various measures can be adopted thereafter.

<5> Install the sensor inside the car.
Various sensors 13 are installed inside the elevator car 2.
A sensor is an electric circuit component that converts a physical quantity into a signal, and an electric signal is mainly used as a signal in that case.
Specifically, the sensor is a load meter, an accelerometer, a level meter, a vibration meter, an optical sensor, a thermometer, a vibration meter, an ammeter, or the like.
At least one of these sensors 13 is attached to the inside of the car 2, and a signal from these sensors 13 is extracted to the outside using the extraction circuit 9.
A determination device 4 that can detect a signal of a certain value or more can be interposed in the extraction circuit 9.
Alternatively, it is also possible to adopt a configuration in which the determination device 4 is not interposed, and the signal is transmitted to the control center 7 as it is and the observer visually determines it.

<6> Installation of the sensor 13 in the control room 5.
The above description is a system in which the sensor 13 is installed inside the elevator car 2 and is taken out through the take-out circuit 9.
However, the mechanical failure may be too late when an abnormality is detected in the car 2.
Therefore, it is possible to provide a sensor 13 attached later in the control room 5 that controls the raising and lowering of the elevator car 2 and take out the signal to make a judgment.
As the sensor 13 attached to the control room 5, in addition to the microphone 11, at least one sensor 13 of a thermometer, a vibrometer, and an ammeter can be employed.
Since the control room 5 does not move, these signals do not necessarily need to use the extraction circuit 9 through the audio circuit 1 connecting the inside and outside of the car 2, but the audio circuit 1 already reaches the management room 3. Wired to
Therefore, the signal from these sensors 13 is configured to be extracted to the outside using the extraction circuit 9 connected to the audio circuit 1 connecting the inside of the elevator and the management room 3, and the extraction circuit 9 has a signal greater than a certain value. It is economical if a determination device 4 that can detect the above is interposed.

<7> Installation of the sensor in the shaft.
A retrofit sensor 13 is installed inside the shaft 6 on which the elevator car 2 moves up and down.
In some cases, an abnormality can be detected in the shaft 6 before the abnormality can be detected in the car 2.
For example, if an abnormal noise in the shaft 6, an abnormal rise in temperature, an inflow of water into the shaft 6 can be detected in the shaft 6, an immediate response is possible.
The sensor 13 is, for example, at least one of a sound collector, a thermometer, a water level meter, and a seismometer.
The signals from these sensors 13 are extracted to an external control center 7 using an extraction circuit 9 connected to the audio circuit 1 connecting the inside of the elevator and the management room 3.
And in the taking-out circuit 9, the determination apparatus 4 which can detect the signal beyond a fixed value is interposed.

<8> Call to car 2.
When the signals from the various sensors 13 described above are equal to or greater than a certain value, the state can be detected by the determination device 4.
If detected, the automatic sound can be transmitted to the inside of the elevator through the take-out circuit 9 from the control center 7 using the speaker 12 inside the elevator, for example.
Even when calling with automatic voice instead of real voice, it can be expected to intimidate offenders.
In the case of other accidents, it is possible to prompt the user in the car 2 to take a calm action and to suppress the occurrence of a secondary disaster.

Explanatory drawing of the Example of the management system of the elevator of this invention

Explanation of symbols

1: existing voice circuit 2: car 3: control room in the same building 4: judgment device 5: control room 6: shaft 7: control center 8: network 9: take-out circuit

Claims (1)

An existing elevator with a safety management circuit installed in advance,
In an elevator where an audio circuit connecting the inside of the elevator car and the control room is installed,
Connect to this audio circuit by adding an extraction circuit that extracts the signal from the audio circuit,
Configure the signal from this extraction circuit so that it can be transmitted to an external control center via a wireless network ,
The extraction circuit
To detect a sound signal above a certain value, the detection of a baseband signal and the detection of a signal modulated with digital data, configured with a determination device having a determination function,
Elevator safety management system.

Images