JPS6138108B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency communication device for an elevator.

In the event of an accident such as a person being trapped in an elevator car due to an elevator malfunction, communication will be made possible between the inside of the elevator car and the manager's room via a private line, and communication between the inside of the elevator car and an external elevator service center, etc. will be made possible. Emergency communication devices that can communicate with each other via a subscriber line are conventionally known.

With this conventional device, it is possible to communicate between the elevator car and the manager's room, but if the manager's office is not present when an accident occurs, the automatic dialing device can detect the subscriber's phone and call the service center. The customer's phone is automatically called, allowing direct communication between the elevator car and the service center.

However, elevator jamming accidents often occur simultaneously when multiple elevators are installed in parallel in the same building. In such a case, if one elevator car and the service center etc. are connected via a subscriber line and a conversation is established, even if the service center etc. is called in the other elevator car where the accident occurred during that time, the service center etc. The subscriber's line is not connected and calls cannot be made. Moreover, at the time of an accident, the passengers in the elevator car are in a panic state, so the dialogue does not get the point and it takes a long time to finish, so no matter how long they wait, passengers in other elevator cars are unable to communicate and become extremely anxious. Ru.

Furthermore, even if the service center wants to talk to other elevator cars after talking to one elevator car, this is not possible in the absence of the manager, so the status of the other elevator cars cannot be known. First, someone from the service center has to rush to the elevator.

In addition, when the service center disconnects the call without permission and tries to call the manager's office because the conversation for one elevator car is pointless, the call is disconnected for that elevator car, making it very difficult. This causes anxiety and the user immediately attempts to call the service center again, resulting in a state where both parties are calling and unable to connect.

In order to solve these drawbacks, the present invention has been developed to provide a service that can be accessed while the subscriber's line remains in the captured state when there is direct communication between one elevator car and the service center in the absence of the manager. The center side can freely switch call connections to other elevator cars or to the manager's room.
It is an object of the present invention to provide an emergency communication device for an elevator that can avoid a panic state when accidents occur simultaneously in a large number of elevator cars.

The present invention will be explained below with reference to embodiments shown in the drawings.

In FIG. 1, 10 is an elevator car, 11
21 is an emergency communication communication device in the elevator car 10; 21 is an emergency communication communication device in the manager's room;
2 is a subscriber telephone in the manager's room, 24 is a subscriber telephone in the service center, 26 is a subscriber line, 27
is the switchboard of the Telegraph and Telephone Public Corporation. The communication device 21 in the manager's room and the communication device 11 in the elevator car 10 are connected by a private line 28 via a connection device 30, and the connection device 30 is connected to the subscriber line 26 via a converter 23. There is. Also, on the service center side, there is a connection control device 50 that sends a switching signal for switching the communication path connection or a recovery signal for opening the communication path to either the communication device 21 in the manager's room or the communication devices 11 in the plurality of elevator cars 10. is connected to the subscriber line 26 via a converter 25.

Figure 2 shows the elevator car 10 and the connecting device 3.
0 is a diagram showing a configuration example of 0. FIG. Each of the plurality of elevator cars 10 includes a communication device 11 consisting of the above-mentioned activation switch, microphone, and speaker, a buzzer 12 that operates when the connection is switched in response to a communication path connection switching signal from the service center side, and a management device. An incoming call display unit 13 is installed to display when a call is being received to the subscriber line 26 on the passenger room side. 29 is a communication device 11 of the elevator car 10;
Alternatively, it is a buzzer that operates when a call is received from the service center to the telephone device 21 in the manager's room.

Reference numeral 31 connects the communication device 11 of the elevator car 10, the communication device 21 of the manager's room, and the subscriber telephone 24 of the service center so as to enable communication, and uses the switching signal to connect a plurality of communication devices of the elevator car 10 or the manager's room. These are an in-house line unit and a line switching unit that switch the communication path connection to the service center side to any one of the communication devices 21 of the above. The in-house line section and the line switching section 31 are configured so that when calls are received from the communication devices 11 of a plurality of elevator cars 10 in parallel, first-come-first-served basis is given, and one elevator car connected to a certain When there is a conversation between the communication device 11 of elevator car 10 and the communication device 21 of the manager's room or the subscriber telephone 24 of the service center, the conversation can be heard by the speaker of the communication device 11 of elevator car 10 other than the first come first served. ing. 32 is a presence/absence switch installed in the manager's room; 33 is a timer that operates after a predetermined period of time has elapsed after the start of a call from the telephone 11 of the elevator car 10 to the telephone 21 of the manager's room; 34 is a timer for the elevator car 10; Communication device 1 inside
This is a call notification section for sending a ring tone to the speaker of the communication device 11 in the car 10 while the communication device 21 in the manager's room is being called from the car 10. 35 indicates when the presence/absence switch 32 is set to the "absent" side, or when the presence/absence switch 32 is set to the "present" side.
If the call device 21 does not respond for a predetermined period of time, an absentee tone or an announcement (by the auto-announcer) is sent to the speaker of the call device 11 of the elevator car 10, and an auto-dial section 36 (described later) sends an absentee tone or an announcement (by the auto-announcer) to the service center. When there is a response to the subscriber telephone 24, the location of the elevator, the name of the building, etc. are announced (by the auto-announcer) to the service center before the interaction between the elevator car 10 and the service center. This is the notification section that is sent to subscriber telephones. 36, when a call is received from the communication device 11 in the elevator car 10 to the communication device 21 in the manager's room, the presence/absence switch 32 indicates "absence".
, or if there is no response for a predetermined period of time even if the subscriber is on the "existing" side, an auto dial section (automatic call origination) sends a dial pulse of a pre-stored number of a specific subscriber (service center) to the exchange 27. The device is composed of a line control section 37, a control section 38, and a dial memory 39.

This control unit 38 includes a call collision prevention circuit that detects an incoming call on the manager's room side of the subscriber line 26 and suspends the activation of auto-dial, and a call collision prevention circuit that detects an incoming call on the manager's room side of the subscriber line 26 and suspends activation of auto-dial. The other party response detection circuit detects a response using the polarity reversal of the line 26 and outputs a detection signal, and operates if this detection signal is not output for a predetermined period of time after auto-dial activation. It includes a timer to cancel the call.

Further, the public corporation's ringing tone and busy tone when calling by auto dialing are heard by the speaker of the communication device 11 in the elevator car 10 via the line control section 37 and the premises line section 31. In order to be distinguishable from the public corporation's ring tone and busy tone to the subscriber telephone 24 of this service center, the ring tone and absent tone for the call to the manager's room communication device 21 mentioned above are the public corporation's ring tone and busy tone. It consists of an oscillating sound with a frequency different from the midtone.

40 receives a switching signal or a restoration signal from the connection control device 50 of the service center and sends the line switching unit 31 to the subscriber telephone 2 of the service center.
4 is a receiving unit that sends out a switching command to switch the connection to the communication device 21 in the manager's room or to one of the communication devices 11 in the plurality of elevator cars 10, or a recovery command to open the communication path.
41 is a transmitter that receives a switching completion signal from the line switching unit 31 and sends the switching completion signal to the connection control device 50. 42 is a power supply that supplies AC100V,
43 is a battery for use during a power outage.

FIG. 3 is a diagram showing an example of the configuration of a connection control device 50 installed on the service center side, which is connected via a converter 25 to a subscriber line 26 to which a subscriber telephone 24 of the service center is connected. There is.

In the figure, A is a hook-up detection relay that operates when the subscriber telephone 24 lifts the hook, a is its normally open contact, and B is a transmission of a switching signal and a recovery signal from a transmission section of a connection control device 50, which will be described later. b is its contact; C ₁ is a capacitor for bypassing the audio signal; C ₂ and C ₃ are DC blocking capacitors; RET is the switching signal described above; A blocking wire 51 is an AC coupling transformer for forming a DC loop during transmission and reception of restoration signals, completion signals, etc. Reference numeral 52 denotes a changeover switch for switching the communication path connection between the subscriber telephone 24 and the communication device 21 in the manager's room or one of the communication devices 11 in the plurality of elevator cars 10, and a recovery button for opening the communication path. 53 is the operation unit 5
A transmitter 54 sends out a switching signal or a recovery signal in accordance with the operation of 2, and 54 is a transmitter 4 in the connection device 30
A receiving unit 55 receives a completion signal from the receiving unit 54 and confirms that the number of the elevator car 10 or the manager's room that has been switched and connected matches the number operated by the changeover switch, and sends the signal. Elevator car 1 switched and connected after receiving a signal
A display section 56 displays the number 0 or the manager's room, and a control section 56 controls the transmitting section 53 and the receiving section 54. 57 is a power supply that supplies AC100V, and 58 is a battery for use during power outages.

Next, a concrete example of the operation of the above device will be explained with reference to FIGS. 2 and 3.

(1) When a passenger turns on the activation switch of the communication device 11 in the elevator car 10 where the failure occurred, the buzzer of the communication device 21 will sound if the presence/absence switch in the manager's room is set to the "present" side. It rings. During this ringing, the ringing tone from the ringing notification unit 34 is heard by the speaker of the communication device in the car 10. When the communication device 21 in the manager's room responds, communication becomes possible between the car 10 and the manager's room. Note that if a plurality of cars 10 call the manager's room in parallel, only the first car 10 will be connected. The speaker of the communication device 11 of the other car 10 that has performed the calling operation can hear the conversation between the car 10 and the manager's room.

(2) If the presence/absence switch 32 of the manager's office is set to the "absent" side but does not respond until a predetermined period of time has elapsed (timer 33 is activated), the presence/absence switch 32 is set to the "absent" side. If so, the absence tone or absence announcement from the notification section 35 is heard through the speaker of the communication device 11 in the car 10.

(3) At this time, the control unit 38 receives the start signal from the timer 33 or the absence signal from the presence/absence switch 32, and the auto dial 36 captures the subscriber line 26 and dials the number stored in the dial memory 39. A pulse is sent out, and the exchange 27 sends out a calling signal to the subscriber telephone 24 of the service center. Note that if the subscriber line 26 on the manager's room side is receiving a call, the call collision prevention circuit in the control section 38 operates and the auto-dial section 36 is not activated. (At this time, the incoming call display section 13 in the car 10 displays the fact that the call is incoming.) Also, the public corporation's ring tone or busy tone to the subscriber telephone 24 is transmitted via the line control section 37 and the premises line section 31. and is heard by the speakers in the car 10.

If there is no response from the subscriber telephone 24 until a predetermined period of time (for example, 50 seconds) has elapsed, the call activated by the timer in the control unit 38 is canceled.

(4) When the subscriber telephone 24 responds, a detection signal from the other party's response detection circuit in the control unit 38 is output to the notification unit 35 due to polarity reversal of the subscriber line. Before the communication between the elevator car 10 and the service center, an announcement such as the location of the elevator car 10 is sent from the notification unit 35 to the subscriber telephone 24.
It becomes possible to communicate with people within 0. As described above, the conversation at this time can be heard through the speaker in the car 10 that arrived after the calling operation.

(5) On the service center side, if it is thought that an accident has occurred in multiple elevator cars 10 at the same time, the service center operates the changeover switch of the operation section 52 in the connection control device 50 to send a changeover signal. Contact a closes when the subscriber telephone 24 is lifted up, and relay B is activated by operation of the operation unit 52, so contact b is switched from the subscriber telephone 24 side to the connection control device 50 (see FIG. 3).
The switching signal from the transmitter 53 is sent to the coupling transformer 5
1. Connection device 30 via capacitors C ₂ and C ₃
The line switching unit 31 switches the connection with the subscriber telephone 24 to one of the elevator cars 10 or the communication devices 11, 21 in the manager's room given by the switching command.
When the switching is completed, a completion signal from the transmitting section 41 is received by the receiving section 54 of the connection control device 50 (relay B operates even while this completion signal is being received, and contact b is on the connection control device 50 side), Elevator car 10 switch-connected to display section 55
number or the number of the manager's office will be displayed.
Buzzers 12 and 29 sound in the car 10 or in the manager's room that has been switched and connected. Since the contact point a remains in the original state shown in FIG. 3 except when an operation signal is being transmitted from the operation section 52 or a signal is being received from the connection device 30, the subscriber telephone 24 can be connected to either the desired communication device 11 or 21. You will be able to connect and talk to each other.

(6) If the communication devices 11 and 21 remain disconnected in the car 10 or in the manager's room after the conversation ends, the service center operates the recovery switch on the operation unit 52 and sends a recovery signal from the transmitter 53. do. Receiving unit 40 receives this and transmits it to communication device 1.
1 or 21 and the subscriber telephone 24 is opened and restored.

In the above embodiment, it goes without saying that the subscriber telephone 22 in the manager's room may be used in place of the communication device 21.

As explained above, in the present invention, even if one elevator car is in a conversation state, the call can be freely switched from the service center side to another elevator car or the manager's room while the subscriber line is captured. Because of this, it is possible to change the call regardless of the response of the passengers in the elevator car who are in a panic state.Moreover, since the connection state of the elevator car connected to the subscriber line is not released, it is possible to change the call regardless of the reaction of the passengers in the elevator car who are in a panic state. Since line connection failures due to collisions between calls from both sides do not occur, the service center can immediately respond to multiple elevators and the manager's office and take appropriate measures, allowing multiple elevators to It is possible to avoid a panic state when accidents occur simultaneously in cars.

[Brief explanation of the drawing]

The drawings show an example of the present invention; FIG. 1 shows the overall outline, FIG. 2 shows a connection device, and FIG. 3 shows a connection control device. 10...Elevator car, 11...Telephone device,
21...Telephone device, 22...Subscriber telephone, 26
... subscriber line, 28 ... private line, 30 ... connection device, 31 ... premises line section and line switching section, 36 ... auto dial section, 40 ... reception section, 41 ... transmission section, 50 ... ...Connection control device, 5
2... Operating unit, 53... Transmitting unit, 54... Receiving unit, 55... Display unit.

Claims (1)

[Claims] 1. A plurality of elevator communication devices 11, 11, . . . each provided in a plurality of elevator cars.
and; a manager's room communication device 21 that is installed in the manager's room and is capable of communicating with each of the plurality of communication devices via a private line; an automatic calling device 36 that calls a specific subscriber telephone set 24 installed at a service center and captures the subscriber's line according to the trajectory from the device; and a communication device installed at the service center that activates the automatic calling device. sending a switching signal to the subscriber line for switching the communication line connection with the specific subscriber telephone to the communication line connection between the specific subscriber telephone and any other communication device other than the activated communication device; A connection control device 50 for transmitting; a switching device that is provided on the telephone device side, receives the switching signal, and performs communication path connection switching from the telephone device to any other telephone device while capturing the subscriber line; An emergency communication device for an elevator, characterized in that the device 31 is configured to select an arbitrary communication device from the service center side and establish a communication connection while capturing the subscriber line.