JPS6361263B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a remote monitoring device that monitors abnormalities in a building, including elevator failures, at a management center remote from the building, using a telephone line. This invention relates to improvements to a circuit that notifies the management center of a building abnormality that occurs during a call with the center.

When an elevator malfunctions, passengers may be trapped inside the car, resulting in a so-called trapped situation. At this time, in order to alleviate passengers' anxiety, an emergency button is installed inside the car, and an intercom is installed as an emergency handset. Emergency reporting devices are often installed to enable communication between the office and the management center.

In this case, the emergency button may be a button on an intercom called a press talk system, but when the emergency button is pressed, a building-side device that automatically dials and enables mutual communication is used as the reporting device. The device on the management center side is called the receiving device.

On the other hand, abnormality in the building, such as fire, gas leak, etc.
When the management center monitors intrusions, etc., a remote monitoring device is used that automatically dials the management center and sends a signal indicating the nature of the abnormality, depending on the operation of the sensor that detects the abnormality.

Although there is a difference between this remote monitoring device and the above-mentioned emergency notification device in that one is a sensor and the other is an emergency button or intercom, the transmitting and receiving devices have similar configurations, so recently,
Devices that perform these types of monitoring simultaneously have come into use. In this specification, this device will be referred to as a remote monitoring device, of which the device on the building side will be referred to as a reporting device, and the device on the management center side will be referred to as a receiving device.

By the way, regarding this type of remote monitoring device,
Elevator failures and building abnormalities are required to be dealt with in the shortest possible time, so notifications are made immediately, but if a building abnormality occurs following an elevator failure, the latter notification may be delayed. Something happened.

In other words, since the processing for a building abnormality takes only a short time, it can be said that even if an elevator failure occurs following a building abnormality, there will be no problem in terms of immediate notification. However, in the past, even if an abnormality occurred in the building while a call was being made between the inside of the elevator car and the control center when an elevator malfunctioned, the abnormality was reported as soon as the call ended. For this reason, there was a problem in that when a long phone call was made, reporting of abnormalities in the building was delayed.

The present invention has been made in order to eliminate the drawbacks of the conventional systems described above, and is a remote control system that can quickly report abnormalities in the building that occur following an elevator failure without interfering with communication between the elevator car and the control center. The purpose is to provide monitoring equipment.

An embodiment of the present invention will be described below with reference to the drawings.

The figure is a block diagram showing the configuration of essential parts of a remote monitoring device according to the present invention.

In the figure, in a building 1 to be monitored, an intercom 11 installed in an elevator car is connected to a reporting device 15 via an interface 12 and an induction coil 13. A sensor 16 and an emergency button 17 in the elevator car are connected. Here, the reporting device 15 includes a network control unit 151 that connects a telephone line to the management center, a changeover switch 152, and a specific signal transmitting unit that generates an audible audio signal of 1.8 [KHz] (hereinafter referred to as a specific signal). 153
and that the elevator was out of order and the fire detector 1
An abnormal signal transmitter 154 that generates a signal indicating that the fire detector 16 and the emergency button 17 have been activated, and a network controller 151, a changeover switch 152, a specific signal transmitter 153, and an abnormal signal transmitter that receives the operation signals of the fire detector 16 and the emergency button 17. 154. The common terminal of the changeover switch 152 is connected to the network control unit 151, one of the changeover terminals a is connected to the induction coil 13 and the specific signal transmitter 153, and the other changeover terminal 6 is connected to the abnormality signal transmitter 154. .

Meanwhile, at the management center 2, the intercom 21
is connected to a receiving device 25 via an interface 22 and an induction coil 23, and a telephone 24 and a display section 26 are further connected to this receiving device 25. Here, the receiving device 25 receives a network control unit 251 that closes a telephone line from the management center side, a changeover switch 252, a specific signal receiving unit 253 that receives a specific signal, and a signal corresponding to an abnormality in the building. Abnormal signal receiving section 252 and network control section 251
a control section 2 that receives signals from the specific signal receiving section 253 and the abnormal signal receiving section 254 and controls the changeover switch 252 and the display section 26;
55. In addition, the changeover switch 252
The common terminal of is connected to the network control section 251, one switching terminal a is connected to the induction coil 23 and the specific signal receiving section 253, and the other switching terminal b is connected to the abnormal signal receiving section 254.

By the way, this remote monitoring device includes a transmitter on the building 1 side and a receiver on the management center 2 side, but these are omitted here because they are not directly related.

The previous use of the remote monitoring device configured as above,
An emergency situation occurred in the elevator, and intercoms 11 and 21 were activated in the elevator and in the control center 2, respectively.
The explanation will start from the state where a call is in progress.

First, the changeover switch 152 on the building 1 side is connected to terminal a.
On the other hand, the changeover switch 252 on the management center 2 side is also switched to the terminal a side, and the exchange at the telephone office 3 connects the network control units 151 and 251.

Here, when the fire detector 16 is activated,
This ON operation signal is applied to the control section 155.
In response to this, the control unit 155 controls the specific signal transmitting unit 1.
When 53 is activated, a specific signal of 1.8KHz is superimposed on the voice during a call. The transmission time of this specific signal is, for example, about 0.1 to 0.5 [sec], which allows discrimination between the voice and the specific signal and does not interfere with communication. After transmitting this specific signal, the control section 155 switches the changeover switch 152 to the terminal b side, and shifts to a system in which the abnormal signal transmitting section 154 transmits a signal indicating that a fire has occurred.

On the other hand, in the receiving device 25, the specific signal receiving section 253 detects the specific signal superimposed on the audio, and applies the detected signal to the control section 255. At this time, a switching command is output from the control section 255 to the changeover switch 252, and the changeover switch 252 is switched to the terminal 6 side.

Next, the control unit 155 on the building side transmits a specific signal, and then controls the abnormality signal transmitting unit 154 after a pause of about 0.1 [sec]. As a result, a signal indicating that a fire has occurred is transmitted to the abnormal signal receiving section 254 on the management center 2 side, and the control section 255 receives this and causes the display section 26 to display the fact.

The time required for this is about 0.1 [sec] at most, and then the control section 155 on the building 1 side returns the changeover switch 152, and the control section 255 on the management center 2 side returns the changeover switch 252 to the state shown in the figure. let

Such an operation, that is, an operation of superimposing a specific signal on the voice during a call, then sending out an abnormal signal, and then returning the changeover switch 151, 251, can be suppressed to less than 1 [sec], so that Instant notification of a fire can be made without virtually interrupting passengers' calls, and the management center can respond quickly.

In addition, the emergency button 17 on the building 1 side is the intercom 1
The same effect as described above can be achieved by using only one button, or by using a detector that detects when the elevator is out of order.

In addition, in the above example, a specific signal of 1.8 [KHz] is
Although it is continuously superimposed on the audio signal for 0.1 to 0.5 [sec], this specific signal may be intermittent, or the frequency may be changed each time it is intermittent.

Furthermore, it goes without saying that the display section 26 is not limited to one that simply performs a display operation, but may also be a buzzer or a combination of these.

As is clear from the above explanation, according to the remote monitoring device of the present invention, even if an abnormality occurs in the building following an elevator failure, the communication between the inside of the car and the control center will not be affected. Abnormalities can be reported quickly.

[Brief explanation of drawings]

The figure is a block diagram showing the configuration of an embodiment of a remote monitoring device according to the present invention. 1... Building, 2... Management center, 3... Telephone office, 11, 21... Intercom, 14, 24...
...Telephone, 15...Notification device, 16...Fire detector, 17...Emergency button, 25...Receiving device, 26...
... Display section, 151, 251 ... Network control section, 15
2,252...Switchover switch, 153...Specific signal transmitter, 154...Abnormal signal transmitter, 155,
255...control unit, 253...specific signal reception unit,
254... Abnormal signal receiving section.

Claims (1)

[Scope of Claims] 1. An emergency switch and an emergency handset installed in the elevator car, as well as a reporting device connected to an abnormality sensor for detecting abnormality in the building, are provided on the side of the monitored building, and a monitoring handset is connected to the emergency switch and the emergency handset. A receiving device is installed on the management center side to which a display device that displays abnormalities in the building is connected, and a telephone line is used to enable communication between the inside of the elevator car and the management center when the emergency switch is turned on. , and in the remote monitoring device that displays the details of the abnormality in the building on the display when the abnormality sensor is turned on, the reporting device is configured to: when the abnormality sensor turns on during a call using the emergency handset; A transmission control means is provided for transmitting a signal corresponding to an abnormality to a management center by cutting off a communication circuit only for a time when it does not interfere with communication, and the receiving device responds to the transmission control means to transmit a signal to the monitoring handset. 1. A remote monitoring device comprising reception control means for cutting off a telephone communication circuit, receiving a signal corresponding to an abnormality, and displaying the details of the abnormality on the display. 2. The transmission control means includes a specific signal transmitting unit that generates an audible frequency signal, and a transmitting side control unit that superimposes this specific signal on the audio signal of the emergency handset immediately before transmitting the signal corresponding to the abnormality. The reception control means includes a specific signal receiving section that receives the signal from the specific signal transmitting section, and a receiving side control section that changes to a reception mode for a signal corresponding to the abnormality based on the output of the specific signal receiving section. A remote monitoring device according to claim 1, characterized in that it comprises: