JPS5945596B2 - Elevator emergency call device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an elevator emergency notification system consisting of a service company in-house reception device having a telephone circuit exclusively for representative incoming calls, a plurality of in-building elevator emergency reporting devices having individual subscriber telephone lines, and a public corporation telephone line. If a tower occupant who is trapped in an elevator car due to an elevator accident presses the emergency call button to make a report, but the building manager happens to be absent and does not respond, the elevator emergency call device automatically dials the alarm. operate and automatically connect to a specific external service company,
When the service company's receptionist responds, the location of the building where the alarm was issued is identified and displayed on the reception device, and the receptionist's remote control allows the elevator emergency notification device to be called and controlled.
This invention relates to a device that allows extension of call time and opening of central office lines at will.

The present applicant relates to a device that has a built-in timer and auto-dial and automatically connects to an external specified service company via a telephone line as a countermeasure in the event that an emergency call is made from inside an elevator car and the building manager is absent. Another person has proposed patent application No. 141140/1983.

According to this document, as a method of identifying the caller at the location of the building, it is proposed that the caller be identified by the tower occupant, or that a pre-recorded tape be played at the beginning of the call. However, the tower riders are in a hurry, so the information is not always accurate. Furthermore, the use of tapes has the drawback that maintenance of the tapes is time-consuming and transmission time is also lengthened. Next, if a hands-free simultaneous communication device consisting of a microphone and a speaker is used inside the elevator car as a means of communication, a voice control circuit to prevent howling is required, and if the interior is very noisy, the operation of the voice control circuit There is a risk that the receptionist's ability to make calls may be suppressed and normal calls may be hindered. Furthermore, as a method to limit the call time and free up the telephone line, we rely on the timer control built into the elevator emergency call system; In this case, will the call be disconnected midway through?
It can be a hassle to ask a passenger in the elevator tower to press the emergency button again to extend the call.

In order to improve the above-mentioned drawbacks, the present invention installs a reception device at an external specific service company and establishes a control relationship between this reception device and the elevator notification device of each building using a multi-frequency signal within the audio band. It is possible to accurately and quickly identify the identity of each building, and also to conduct receptionist-driven press talk calls to elevator tower passengers, and also accept requests to extend the call time of the elevator notification device and open the telephone line. This is a method that is carried out by the person concerned.

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

FIG. 1 shows the circuit block of the elevator emergency notification system. The elevator car inner slave unit 1, the emergency call button 2, the microphone 3, the speaker 4, and the microphone 3 and speaker 4 together are referred to as a communication device. Elevator communication cable 5, building manager's room main unit 6, attached telephone 7, office line telephone key 8, office line 9, office line incoming bell 10, 30 second timer 11, auto dial 12, 4 second timer 13, monostable Multivibrator 14, identification signal oscillator 15, frequency filter 1
6, a decoder 17, a reset/set flip-flop 18, a 90-second timer 19, a talk time limit warning sound oscillator 20, a 30-second timer 21, and relays A-M. FIG. 2 shows the circuit block of the service company's reception device.

reception device 22, representative office line 23, telephone 24, delay circuit 25, retrigger flip-flop 26 (i.e.
monostable multi-pipe radar with a trigger, which maintains its operating state while the trigger is continuously input), monostable multivibrator 27, frequency filter 28, decoder 29, memory circuit 30, identification display 3
1. Press talk telephone key 32, call extension telephone key 33, end call telephone key 34, encoder 35, monostable multivibrator 3
6, double operation prevention circuit 37, station line selection telephone key TK, ~ seal Ω
, office line incoming lamps CL, ~CLnl, buzzer BZl, and relays NlO, ~0n1P-W. The operation will be explained below.

In FIG. 1, when an elevator tower passenger presses the emergency call button 2, the relay A is operated via the elevator communication cable 5, and the relay B is held, and a buzzer (not shown in the figure) sounds. If the building manager is present, he answers using the attached telephone 7, and the elevator tower occupant makes an extension call through the microphone 3 and speaker 4 of the slave unit in the elevator car. If the building manager is unable to take action after the extension call ends, he or she can operate the central line telephone key 8 to the central line side, acquire the central line 9, and use the dial on the attached telephone 7 to contact an external service company. Next, if the building manager is absent and does not respond, when relay B is activated first, the 30 second timer 11 has already started, and 30 seconds later, relay C is activated, and the auto dial 12 is switched to central line 9 by contact C3. Connected and ready to send. At the same time, the elevator car cordless unit 1 is switched to the station line side by contacts Cl and C2. Also, the 4-second timer 13 is started by the contact C4, and after 4 seconds, the relay D is activated and the contact d sends a specific dial pulse from the auto dial 12 to the office line 9. E operates, and auto dial 1 is set by contact e.
2 and continue to hold the central line. At this point, relay F operates, and relay G is operated by its contact f.
By switching the connection point g, the station's ringing tone (ringback tone) is heard from the speaker 4 into the elevator car. A specific dial pulse sent by the auto dialer at the other end connects the representative office line, eg, 23-, of the reception device 22 in FIG. 2 through the exchange of the office, and the bell signal of the office arrives. Next, relay 0 detects the bell signal and operates, contact 0.
1, the station line incoming lamp CL lights up and at the same time the buzzer Bz sounds. When the receiver presses the office line selection button TK, which corresponds to the incoming call lamp CL, and answers using the telephone 24, the telephone exchange reverses the voltage polarity of the office line 9 shown in FIG. 1, and the relay H operates. , relay F and relay G are restored. The above explanation is an explanation of the operation of the elevator emergency notification device automatically transmitting a call to the central office line and calling the reception device of the elevator service company when the manager is absent. Next, the operation of the present invention will be explained. (1) As a means for displaying the location of the caller identification display building on the reception device, when the relay H shown in FIG. The relay 1 is operated for about 1 second, and the contact 1 causes the identification signal oscillator 15 to send a caller identification signal to the office line 9.

The identification signal is a combination of two or more arbitrary frequencies within the audio band, and one example is 1057.5Hz and 1147.5Hz.
It is assumed to be a dual frequency of 5Hz. The identification signal sent to the central office line 9 arrives at the central office line 23 in FIG. 2 via the central office exchange. Returning to the previous explanation, the bell signal from the station is station line 2.
When a call arrives at 3-, relay 0 performs an intermittent operation according to the bell signal, but the trigger L flip-flop 26 is activated by the 0V voltage, and relay Q is activated to perform a recovery operation with a delay of 2 seconds or more. Therefore, the relay Q operates continuously during the period of the bell signal, and recovers with a delay of 2 seconds or more after the bell signal disappears. Next, when the recipient answers using the telephone 24, the relay N is activated by the station line current, and the relay P is activated through the delay recovery circuit 25 by the contact n. The delay recovery circuit 25 prevents hooking by the telephone. The monostable multivibrator 2r sends out one pulse through the contacts g and p1, which causes the relay R to operate for about 1 second, and by switching the contact r, the identification signal receiving circuit of the frequency filter 128 and below is connected to the station line 23-, connected to. Therefore, when the receiver answers a ringing call using the telephone 24, contact 1 in FIG. 1 and contact R in FIG. 2 operate synchronously for one second, and the caller identification signal is selected by the frequency filter 28 of the receiver. The decoder 29 translates it into a caller display, the memory circuit 30 holds it during the call, and the identification display 31
to display the location of the building. (2) When the remote control receiver of a press talk call responds using the telephone 24, if there is no identification display, the caller will make a normal phone call; however, if an identification display appears, an automatic call will be made from the elevator emergency call device. Therefore, from now on, the user operates the press talk telephone key 32 to talk to the passenger inside the elevator car.

In a steady state when the press talk telephone key 32 is not pressed, the microphone 3 in FIG. 1 is connected to the office line 9, so
In FIG. 2, the receptionist can first listen to the situation inside the elevator car through the handset of the telephone 24. Next, the receiver presses the press talk telephone key, and a dual frequency control signal is sent to the central office line. This operation will be explained next. When the press talk power supply 32 is pressed, the ground potential is input to the encoder 35, and at the same time a code signal is output, the monostable multivibrator 36 is activated, and this monostable multivibrator 36 sends out a pulse of approximately 1 second. When this signal is input to the AND circuit and the 0R circuit along with the code signal output described above, predetermined relays S, T, and W operate for one second.
Contacts S, t and w send out the dual frequency control signals f] and F2 to the central office line 23-. Here, the dual frequencies F and F2 of the control signal are, as in the explanation of the identification signal, F, = 1057.5 Hz, f2 = 1147.5 Hz, as an example.
shall be. The control signal sent to the central office line 23 passes through the central office exchange, and passes through the central office line 9 in FIG. 1 to the frequency filter 16.
The signal is selected by the decoder 1r, translated into a set signal, and input to the reset/set flip-flop 18 to be set. Becomes operational. By switching the contact g, the speaker 4 is connected to the central office line 9, so when the receptionist speaks through the transmitter of the telephone 24 while holding down the press talk telephone key, the speaker 4 in the elevator car amplifies the sound to the tower passengers. be done. Next, when the receptionist finishes speaking and says 1, please, and releases the press talk telephone key, the contact of the telephone key is restored and the ground potential is input to the encoder 35, and the code output in turn activates relays S, U, and W for one second. Operate, contacts S, u and W
Therefore, the double frequency of control numbers F and F3 is transmitted to the central office line 23-,
will be sent to. Here, the frequency F3 is F3=1 as an example.
The frequency shall be 222.5Hz. The control signal sent to the office line 23 passes through the exchange of the office, passes through the office line 9 in FIG. is reset, and relay G is restored. When the contact point g is restored, the microphone 3 is connected to the central office line 9, and the voice of the elevator tower passenger can be heard from the telephone 24 on the receptionist side. By repeating the operation of the press talk telephone key described above, the receiver can make a press talk call initiated by the receiver. (3) When the receiver answers the call limit remote control destination, the relay H in Figure 1 is activated and the 90 second timer 19 is started by the contact H2, and after 90 seconds, the relay J is activated and the call is made by the contact J2. A warning sound is sent to the local office line 9 from the time limit warning oscillator 20.

In addition, contact J1 starts a 30 second timer 21, and if left as is, relay L operates, contact 11 restores relay C, and the function is to automatically open the office line 120 seconds after the receiver responds. ing. Therefore, if the call limit is extended, a warning tone will be sounded on the receiver's side.30
Operate the call extension telephone key 33 within seconds. When the ground potential is input to the encoder 35 by the contact of the telephone key, the relay S,
V and W move for 1 second, contacts S, v and w operate for 1 second, and control signals F, F4 and F4 are output by contacts S, v and w.
The heavy frequency is transmitted to the central office line 23]. Here, the frequency F4 is set to 1297.5 Hz as an example. The control signal sent to the office line 23 passes through the exchange at the office, passes through the office line 9 in FIG. By returning the 90-second timer 19 to zero, the relay J is restored, the warning sound disappears, and the call time can be extended by an additional 120 seconds. The call time extension operation can be repeated. (4) Remote control for opening the central office line The elevator side emergency notification device must have a 90 second timer 19 and a 30 second timer 21, and also have a built-in function to automatically open the central office line after 120 seconds. mentioned earlier.

However, if the call ends midway, in order to minimize the possibility of invalid telephone calls being held on hold, the receiver operates the call-end key 34 before hanging up the handset of the telephone 24, and disconnects the central telephone line of the elevator's emergency notification device. Can be forcibly disconnected. That is, when the end-of-call key 34 is operated, the ground potential is input to the encoder 35 by the contacts of the key, relays T, U, and W operate for one second, and the dual frequencies of F2 and F3 are switched to the station by the contacts T, u, and w. The signal is sent to line 23-,. The signal sent to the central office line 23-, passes through the central office exchange and the central office line 9 in FIG. 1, is selected by the frequency filter 16, and is sent to the decoder 17.
Relay M is operated by the translated output, relay L is operated by contact m, and relay C which is in operation is restored by breaking contact 11. Therefore, the central office line 9 is disconnected and the original standby state is restored. After confirming that the other party's line has been disconnected, the receiver hangs up the handset of the telephone 24. In this embodiment, the control circuit of the receiving device described in the claims includes the encoder 35, the AND circuit, the 0R circuit, and the relays S, T, and U.
, V, W, etc. Further, in this embodiment, the switching control circuit mentioned in the claims refers to a timer, relays M, K, L, C, etc., and their contacts.

As described above, in the present invention, when a tower occupant who is trapped in an elevator car due to an accident presses the emergency call button, the location of the elevator is automatically displayed on the reception device, and a press talk call initiated by the receptionist is made. This allows for effective use of the central office line by allowing the receiver to grasp the accident situation accurately, and controlling the call time and opening the central office line at his/her discretion.

[Brief explanation of the drawing]

FIG. 1 shows a circuit block for an elevator emergency notification system according to the present invention, and FIG. 2 shows a circuit block for a reception system at a service company. 1... Elevator car inner slave unit, 2...
Emergency call button, 3...Microphone, 4...
...Speaker, 6...Building manager's room main unit, 7.
... Attached telephone, 9 ... Office line, 11 ...
...30 second timer, 12...auto dial, 13...4 second timer, 14...
- Monostable multivibrator, 15...Identification signal oscillator, 16...Frequency filter, 17...
... Decoder, 18 ... Reset flip-flop, 19 ... 90 second timer,
20... Call time limit warning sound oscillator, 21...
...30 second timer, A, B, C, D, E, F, G
,H,,J,K,L,M...Relay, 22...
... Reception device, 23 ... Representative station line, 2
4...Telephone, 25...Delay circuit, 2
6...Retrigger flip-flop, 27...
...Monostable multivibrator, 28...
Frequency filter 1, 29...Deco=da, 30.
...Memory circuit, 31...Identification display,
32...Press talk telephone key, 33...
Call extension telephone key, 34...Call termination telephone key, 35...
... Encoder, 36 ... Monostable multivibrator, TK, ~TKn ... Office line selection telephone key,
CL, ~CLn...... Office line incoming lamp, Bz...
...Buzzer, N, O, ~0n, P, Q, R, S, T
, U, V, W...Relay.

Claims (1)

[Claims] 1 When the emergency call button inside the elevator car is pressed, auto-dial operates, calls an external reception device within a specific service company, and calls the reception device inside the elevator car and the reception device via the elevator side emergency notification device and the central office line. In the elevator emergency call communication device that performs phone calls, the reception device includes a group of office line circuits that accept a dedicated line for representative incoming calls, and detects multiple frequencies of an identification signal indicating the location of the elevator emergency call device that issued the alarm. a first frequency filter, a display device, a first decoder that receives the output of the first frequency filter and converts it into a signal that causes the display device to display the content of the identification signal, and an elevator-side emergency notification device. A multi-frequency oscillator that generates a control signal for controlling the oscillator, a telephone key, and a control circuit that receives the output of the telephone key and selects the multi-frequency oscillator. an identification signal oscillator that generates multiple frequencies specific to the elevator-side emergency notification device; a second frequency filter that detects the multiple frequency control signal from the reception device; and a second frequency filter that converts the output of the second frequency filter. a switching control element that receives the output of the decoder and connects the speaker to the microphone in the elevator car to the central office line by switching its own switch contacts; An elevator emergency system characterized by comprising a switching control circuit that controls whether to immediately disconnect the communication device in the elevator or to reset the timer that controls the disconnection operation after a time set in the timer has elapsed. Notification device.