JPH1081456A - Emergency communication device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inspect an emergency communication interphone only on the side of a monitor center. SOLUTION: When an interphone within an elevator cage is to be functionally inspected at a monitor center, this emergency communication device calls an emergency communication terminal 4 up using a telephone line 2, upon completion of line connection, a test sound signal at a definite output level is transmitted to the emergency communication terminal by a test sound signal transmitting means 15. The test sound signal is received by the emergency communication terminal so as to be outputted in sound by a speaker within the elevator cage. Besides, a sound signal picked up by a microphone 82 when the test sound of the speaker is outputted, is returned to the monitor center 1 from the emergency communication terminal 4, and it is judged of the output of test sound by a sound signal level judging means 17 on the monitor center side whether or not its signal level is high, so that it is thereby judged whether or not it is appropriate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a surveillance center, an emergency contact terminal provided in an elevator facility of a remote building, and a communication line connecting between them. The present invention relates to an emergency contact device of an elevator that performs an intercommunication between the terminal and an emergency contact terminal.

[0002]

2. Description of the Related Art Conventionally, such an elevator emergency communication device is used for checking an intercom function, which is essential for emergency communication with a passenger trapped in an elevator car.
At least three staff members, one for the center, one for the inspection staff in the elevator car, and one for the technician who adjusts the emergency communication terminal installed in the machine room. Inspection work was performed by a technician.

[0003]

As described above, in the conventional elevator emergency communication device, at least three technicians are required for inspection of the emergency communication function, so that the operation cannot be performed at any time. It is necessary to perform the inspection at the same time as the inspection of the equipment itself, which increases the inspection work time of the elevator equipment. Meanwhile, there is a problem that the use of the elevator is stopped and the user is troubled for a long time.

The present invention has been made in view of such a conventional problem, and the function of an interphone for making a telephone call between a monitoring center and a user in a car is checked only by the monitoring center at any time. It is an object of the present invention to provide an elevator emergency communication device which can be performed.

Another object of the present invention is to provide an elevator emergency communication device capable of automatically adjusting the sound level of an intercom.

[0006]

According to a first aspect of the present invention, there is provided a monitoring center, an emergency communication terminal provided in an elevator facility of a building in a remote place, and a communication line connecting between them. In an elevator emergency communication device that performs intercommunication between the monitoring center and the emergency communication terminal during an emergency of elevator equipment, the monitoring center includes a calling unit that calls the emergency communication terminal, and a caller that calls the emergency communication terminal. Test voice signal transmitting means for transmitting a voice signal of a constant output level, and voice signal level determining means for determining the level of the voice signal level sent from the emergency contact terminal, wherein the emergency contact terminal comprises: An audio signal receiver that receives a test audio signal sent from a monitoring center and outputs it to a speaker installed in an elevator car of the elevator facility. When, in which a voice signal sending means for sending the output audio signal of the speaker in which the elevator car microphone disposed in proximity to the speaker in the pick up to the monitoring center.

In the elevator emergency communication device according to the first aspect of the present invention, when the surveillance center attempts to check the intercom function in the elevator car of a remote elevator facility, a specific emergency call is made by the calling means on the surveillance center side. The test terminal is called, and if the communication line can be connected, a test sound signal of a fixed output level is sent to the emergency contact terminal by the test sound signal sending means.

The emergency communication terminal receives the test voice signal by the voice signal receiving means and outputs the voice to the speaker in the elevator car.

The audio signal picked up by the microphone at the time of the test audio output from the speaker is returned to the monitoring center by the audio signal transmitting means, and the audio signal level determining means on the monitoring center side determines the level of the test audio output signal. ,
Judge the suitability.

[0010] Thus, even if there is no technician at the elevator equipment side, the monitoring center side transmits a test audio signal of a constant output level to the emergency contact terminal, and outputs the test audio output returned from the emergency contact terminal. The state of the intercom function can be determined by evaluating the signal level.

According to a second aspect of the present invention, in the emergency communication device for the elevator according to the first aspect, the emergency communication terminal further detects a reception level of the test audio signal received by the audio signal receiving means. Means, and electronic volume means for adjusting an audio signal level to be output to the speaker to a predetermined level in accordance with the reception level detected by the reception level detection means.

In the emergency communication device for an elevator according to the second aspect of the present invention, the reception level of the test audio signal sent from the monitoring center is determined by the reception level detection means, and the electronic volume means is controlled according to the reception level. The audio output level output from the speaker in the car is controlled to increase or decrease, and is automatically adjusted so that the audio can be output at a substantially constant output level from the speaker even when the signal reception status from the monitoring center is weak.

As a result, even if the voice of the emergency call sent from the monitoring center is low, the voice of a certain level can be notified from the speaker to the passengers in the car,
The reliability of the emergency communication function is improved.

According to a third aspect of the present invention, in the elevator emergency communication device according to the first or second aspect, the emergency communication terminal detects an output audio signal level of the speaker picked up by the microphone. Sending the sound signal sending means to adjust the signal level sent to the monitoring center to a predetermined level according to the output sound signal level of the speaker picked up by the microphone detected by the output sound level detecting means. It is provided with signal level adjusting means.

In the elevator emergency communication device according to the third aspect of the invention, when the sound level picked up by the microphone in the elevator car is low, the output sound level detecting means detects the sound signal level and adjusts the transmission signal level. The means adjusts the signal level transmitted by the audio signal transmitting means to the monitoring center in accordance with the output audio signal level so that the signal level becomes a predetermined level.

[0016] Accordingly, even if the voice of the passenger picked up by the microphone in the elevator car is low on the surveillance center side,
A constant level of audio signal can be heard at all times, improving the reliability of the emergency call function.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a hardware configuration of a first embodiment of the present invention. Emergency contact devices of an elevator of this embodiment are scattered in a monitoring center 1 and a remote place connected to the monitoring center 1 through a telephone line 2. And emergency contact terminals 4 provided in the respective elevator facilities 3.

The emergency communication terminal 4 is normally connected to an elevator control device 6 installed in the elevator machine room 5 on the top floor of a building or a rooftop, and to an interphone 8 installed in an elevator car 7. I have. The elevator control device 6 controls the operation of the elevator and monitors the abnormality of the elevator equipment 3.

The functional configuration of the monitoring center 1 and the emergency contact terminal 4 is as shown in FIG. First, the emergency call inspection schedule data is registered in the monitoring center 1, and a schedule monitoring unit 11 for issuing an emergency call inspection instruction in accordance with the schedule data and the emergency contact terminals 4 in remote locations registered in the memory 12 are respectively provided. , A telephone line interface (I / F) 14 for connecting / disconnecting to / from the telephone line 2, and a test voice signal transmitted through the telephone line 2 via the telephone line 2. A signal tone transmitting section 15 for sending to the emergency contact terminal 4, a signal tone receiving section 16 for receiving a signal tone sent from the specific emergency contact terminal 4 via the telephone line 2, and a reception of the signal tone receiving section 16 A signal level detector 17 for detecting the signal level thus obtained and confirming that the signal level is within the reference level range; It has an inspection result display section 18 to display a.

The emergency contact terminal 4 has a telephone line interface (I / I / O) for connecting to and disconnecting from the telephone line 2.
F) 41, an audio switch 42 for switching between transmission and reception of audio signals, an inspection mode switching unit 43 for switching the emergency contact terminal 4 for inspection, a timer 44 for managing the transmission time of the audio signals, and the intercom 8 A / D conversion circuit (A / D) that performs A / D conversion of audio signals picked up by the microphone 82
45, a memory 46 for storing an output signal of the A / D conversion circuit 45, and a D / A conversion of a digital audio signal output from the memory 46 to perform an audio changeover switch (SW).
And a D / A conversion circuit (D / A) 47 for outputting the data to the D / A converter.

Next, the operation of the elevator emergency communication device having the above configuration will be described. When the schedule monitoring unit 11 of the monitoring center 1 recognizes that the preset time of the pre-registered emergency call test has come, the auto dial unit 13 stores the telephone number of the emergency contact terminal 4 for performing the call test from the memory 12. Read and auto-dial the phone number. Then, when the telephone line with the corresponding emergency contact terminal 4 is closed, the signal sound transmitting section 15 transmits a test audio signal of a constant level for a fixed time.

On the emergency communication terminal 4 side, the audio signal level received by the audio changeover switch 42 is compared with the audio signal level to be transmitted. If the received signal level is high, the reception side is determined. The operation is performed to switch to the transmitting side. Here, since the test audio signal is being transmitted from the monitoring center 1, the operation is switched to the receiving side.
The test audio signal is output from the speaker 81 of the intercom 8.

A part of the test sound output from the speaker 81 is taken into the microphone 82 by a wraparound phenomenon. Therefore, the inspection mode switching unit 43 uses the microphone 8
2 detects that it has captured part of the test audio,
Automatically switch to inspection mode.

After that, a part of the output sound of the loudspeaker which has passed around the microphone 82 is converted into a digital sound signal by the A / D conversion circuit 45 and stored in the memory 46 for a certain period of time. After a certain period of time managed by the timer 44 has elapsed, the digital audio signal stored in the memory 46 is D / A converted again into an analog signal by the D / A conversion circuit 47 and output to the audio changeover switch 42. The data is transmitted to the monitoring center 1 through the telephone line interface 41.

In the monitoring center 1, the voice signal sent from the emergency contact terminal 4 is
The signal level is received by the signal sound receiving unit 16 through the
At 7, the signal level is detected and it is determined whether or not it is within the reference level range. If it is within the reference level range, it is normal. If it is outside the reference level range (particularly when the signal level is low).
An error is determined and the result is displayed on the inspection result display unit 18.

If the inspection result is normal, the inspection work can be terminated, and if an error is determined, a technician will go to the site and perform the inspection and repair work as in the past.

As described above, in the elevator emergency communication device according to the first embodiment, a test voice signal of a certain level is transmitted from the monitoring center 1 to the emergency communication terminal 4 through the telephone line 2 and The terminal 4 outputs the received test audio signal from the speaker 81 of the intercom 8 in the elevator car 7, picks up a part of the audio with the microphone 82, returns the audio signal to the monitoring center 1 again, and returns the signal to the monitoring center 1. The level is detected and whether the emergency call function is normal or error is determined based on whether the level is within the reference level range. It is no longer necessary to perform inspection work by name, and if the judgment is normal, the inspection can be completed. Technicians by now that may be carried out inspection work of the fault location, it is possible to reduce the effort applied to the inspection work of the very contact call function.

Next, a second embodiment of the present invention will be described with reference to FIG. The feature of the second embodiment is that, in addition to the function of transmitting and receiving a test voice signal, an electronic volume that automatically adjusts to a loud sound when the received signal level is low is provided on the emergency contact terminal 4 side. Also, an electronic volume for automatically increasing the signal level and sending the signal to the monitoring center 1 even when the audio signal level from the microphone transmitted to the monitoring center 1 is low is provided.

That is, as shown in FIG. 3, the emergency contact terminal 4 is provided with telephone line interfaces 41 to D / A conversion circuits 47 similarly to the first embodiment, and furthermore, voices received through the telephone line interface 41 are provided. A reception level detection unit 48 for detecting a signal level, and an increase and decrease adjustment of a signal level of the reception audio so that the audio signal level detected by the reception level detection unit 48 is compared with a reference level to be an appropriate level. The electronic volume 49 is sent to the speaker 81 of the intercom 8 in the car 7. The emergency contact terminal 4 further includes a transmission level detection unit 4 for detecting the audio signal level output from the D / A conversion circuit 47.
10 and an electronic volume 411 that compares the audio signal level detected by the transmission level detection unit 410 with the reference level to increase or decrease the transmission audio signal level so as to be an appropriate level, and outputs it to the audio switch 42. Have.

Next, the operation of the elevator emergency communication device according to the second embodiment will be described. As in the first embodiment, the monitoring center 1 sends the schedule monitoring unit 1
When a test voice signal of a certain level is transmitted to the emergency contact terminal 4 through the telephone line 2 under the management of the first, the emergency contact terminal 4 detects the signal level of the test voice signal in the reception level detector 48, If the signal level is outside the reference level range, the signal level is automatically increased or decreased by the electronic volume 49 so as to be a predetermined level, and then output as a sound from the speaker 81 of the intercom 8.

A part of the test sound output from the speaker 81 is taken into the microphone 82 by the wraparound phenomenon. Therefore, the inspection mode switching unit 43 uses the microphone 8
2 detects that it has captured part of the test audio,
Automatically switch to inspection mode.

After that, a part of the output sound of the loudspeaker wrapped around the microphone 82 is converted into a digital sound signal by the A / D conversion circuit 45 and stored in the memory 46 for a certain period of time. After a lapse of a predetermined time managed by the timer 44, the digital audio signal stored in the memory 46 is converted from analog to digital by the D / A conversion circuit 47 and output again, and the signal level is detected. Part 410
If the signal level to be transmitted is outside the reference level range, the electronic volume 411 increases or decreases the signal level to a predetermined level, and outputs the signal to the voice changeover switch 42. Send to

The monitoring center 1 converts the voice signal sent from the emergency contact terminal 4 into a telephone line interface 14.
The signal level is received by the signal sound receiving unit 16 through the
At 7, the signal level is detected and it is determined whether or not it is within the reference level range. If it is within the reference level range, it is normal. If it is outside the reference level range (particularly when the signal level is low).
An error is determined and the result is displayed on the inspection result display unit 18.

For the inspection performed in this manner, if the inspection result is normal as in the first embodiment, the inspection work can be terminated, and if an error is determined, the technician can And perform inspection and repair work as before.

In the elevator emergency communication device according to the second embodiment, a test voice signal of a certain level is transmitted from the monitoring center 1 to the emergency communication terminal 4 through the telephone line 2 as in the first embodiment. Then, on the emergency contact terminal 4 side, the received test voice signal is output from the speaker 81 of the intercom 8 in the elevator car 7, a part of the voice is picked up by the microphone 82, and the voice signal is again returned to the monitoring center 1 side. To detect the signal level, and determine whether the emergency call function is normal or error based on whether the signal level is within the reference level range. However, it is no longer necessary to perform inspection work with at least three people. If it is determined that the inspection is normal, the inspection can be completed. Similarly will be may be performed inspection of fault location by multiple technicians, reduce the effort required to inspection work very contact communication function.

Further, in the case of the second embodiment, the emergency signal terminal 4 monitors the received signal level, and if the received signal level is out of the reference level range, automatically increases or decreases the signal level to a predetermined signal level. The apparatus includes a volume 49 and an electronic volume 411 that automatically increases or decreases the transmission signal level to be transmitted to the monitoring center 1 until the signal level falls outside the reference level range until the signal level reaches a predetermined level. Automatically adjusts the transmission / reception signal level to maintain the emergency call state always in good condition. As a result, the reliability of the operation of the system can be improved, and the number of labor required for the inspection work can be reduced.

[0037]

As described above, according to the first aspect of the present invention,
When trying to check the intercom function in the elevator car of a remote elevator installation at the monitoring center,
The emergency contact terminal is called from the monitoring center, and if a communication line can be connected, a test audio signal of a fixed output level is sent to the emergency contact terminal. The emergency contact terminal receives this test audio signal and receives a speaker in the elevator car. The sound signal picked up by the microphone when the test sound is output from the speaker is returned to the monitoring center, and the monitoring center determines whether the emergency call function is normal or abnormal based on the level of the signal. Even if there is no technician at the elevator equipment side, the monitoring center can perform the inspection work of the emergency communication function, and the number of workers required for the inspection work can be reduced.

According to the second aspect of the present invention, the emergency contact terminal determines the reception level of the test voice signal sent from the monitoring center, and outputs the voice output from the speaker in the elevator car according to the reception level. Since the output level is controlled to increase or decrease, even when the reception state of the signal from the monitoring center is particularly weak, a sound can be output from the speaker at an almost constant output level, and the reliability of the emergency communication function is improved.

According to the third aspect of the present invention, the emergency contact terminal detects a voice signal level picked up by a microphone in the elevator car and determines a voice signal level to be sent to the monitoring center according to the output voice signal level. Since the increase / decrease control is made to be the level, even if the voice of the passenger picked up by the microphone in the elevator car is low, the monitoring center side can always listen to a constant level audio signal,
The reliability of the emergency communication function is improved.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram illustrating a hardware configuration according to a first embodiment of this invention.

FIG. 2 is a functional block diagram showing a detailed functional configuration of a monitoring center and an emergency communication terminal according to the embodiment.

FIG. 3 is a functional block diagram showing a detailed functional configuration of a monitoring center and an emergency communication terminal according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surveillance center 2 Telephone line 3 Elevator equipment 4 Emergency communication terminal 5 Elevator machine room 6 Elevator control unit 7 Basket 8 Intercom 11 Schedule monitoring unit 12 Memory 13 Auto dial unit 14 Telephone line interface 15 Signal sound transmission unit 16 Signal sound reception unit 17 signal level detection unit 18 inspection result display unit 41 telephone line interface 42 voice changeover switch 43 inspection mode switching unit 44 timer 45 A / D conversion circuit 46 memory 47 D / A conversion circuit 48 reception level detection unit 49 electronic volume 410 transmission level Detector 411 Electronic volume 81 Speaker 82 Microphone

Claims (3)

[Claims] 1. A monitoring center, an emergency communication terminal provided in an elevator facility of a building in a remote place, and a communication line connecting them, and an emergency communication with the monitoring center when the elevator facility is in an emergency. An emergency communication device for an elevator that performs mutual communication with an emergency terminal, wherein the monitoring center includes a calling unit that calls the emergency communication terminal, and a test voice that transmits a voice signal having a constant output level to the emergency communication terminal. Signal transmitting means, and voice signal level determining means for determining the level of a voice signal level transmitted from the emergency contact terminal, wherein the emergency contact terminal transmits a test voice signal transmitted from the monitoring center. Audio signal receiving means for receiving and outputting to a speaker installed in an elevator car of the elevator facility, Emergency contact device for an elevator, characterized by comprising a sound signal sending means for sending the output audio signal of the speaker microphone placed close to the speaker picked up by the monitoring center. 2. The emergency communication terminal, comprising: a reception level detection unit configured to detect a reception level of the test audio signal received by the audio signal reception unit; 2. The elevator emergency communication device according to claim 1, further comprising electronic volume means for adjusting a level of an audio signal output to a speaker to a predetermined level. 3. The emergency communication terminal, comprising: an output audio level detection means for detecting an output audio signal level of the speaker picked up by the microphone; and the speaker picked up by the microphone detected by the output audio level detection means. 3. The elevator according to claim 1, further comprising a transmission signal level adjusting unit that adjusts a signal level transmitted from the audio signal transmitting unit to the monitoring center to a predetermined level according to the output audio signal level of the elevator. Emergency contact device.