JPH06144730A - Elevator remote monitoring device - Google Patents

Abstract

PURPOSE:To make a passenger speak through an interphone automatically even though he cannot push an interphone speaking call button, when he is confined in a car, by detecting the input sound volume from the interphone, and comparing it with a standard sound volume. CONSTITUTION:An input sound volume detecting circuit 31 is provided in a line from an interphone 21 to an interphone connecting circuit 13 the level of a voice signal delivered from the interphone 21 is detected, and a sound volume detecting signal is given to a comparison circuit 33. In the comparison circuit 33, a standard voltage signal 32 and an input sound volume voltage signal are compared, and when the input sound volume voltage signal is larger, a deciding signal 34 that a passenger is confined in a cage is given to a CPU 14. The CPU 14 gives a line connecting instruction 16 to a line connecting circuit 12 in the AND condition with the deciding signal 34 and an elevator trouble signal 15, and at the same time, it gives an interphone connecting instruction 17 to an interphone connecting circuit 13. In such a way, the line connecting circuit 12 is connected to a public telephone circuit 11, and a telephone number of a maintenance company registered beforehand is dialed automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator remote monitoring device for connecting elevators scattered in each area to a remote monitoring center by using a telephone line to transmit elevator status information and make a call.

[0002]

2. Description of the Related Art In recent years, the use of elevators has become more and more active, and not only middle and high-rise buildings but also small buildings and private houses have been installed. Daily maintenance and inspection work is indispensable for the elevator, which is the main transportation means in the vertical direction of such a building, and a system in which a dedicated maintenance staff member of an elevator maintenance company goes to the site to perform maintenance and inspection work regularly on a monthly basis. I am taking it. However, with the increase in the number of elevators installed, the demand for labor saving and efficiency improvement of maintenance and inspection work is increasing.To meet this demand, recently, remote elevators that remotely and automatically monitor individual elevators have been developed. Surveillance equipment has been developed, and most of the newly installed elevators now have this equipment installed.

The conventional general construction of this elevator remote monitoring apparatus is as shown in FIG. The remote monitoring terminal device 1 on the side of the elevator is installed in the elevator machine room 3 like the elevator control device 2, and both are connected by a transmission line 4. The remote monitoring terminal device 1 is also connected to a direct-speaking intercom 6 installed in the elevator car 5 via a tail cord 7. Then, the remote monitoring terminal device 1 and the remote monitoring device 9 of the maintenance company 8 are connected using a public telephone line 10, and the lines 10 are connected to each other by a dial operation, and information communication such as an elevator state and an intercom. 6
It is possible to use the direct-speaking function to pass through.

By the way, the following three functions are available as the functions of realizing the elevator remote monitoring device.

(1) Failure information reporting function When a failure occurs in the elevator, the remote monitoring terminal device 1 collects the information from the elevator control device 2 via the transmission line 4, and the maintenance company 8 This is a function for automatically issuing information to the remote monitoring device 9 and transmitting information.

(2) Maintenance data reporting function This function periodically collects basic information such as the number of times the elevator has operated, and transmits the information to the remote monitoring device 9 via the telephone line 10 at regular intervals. It is a function to perform.

(3) Intercom call function This function is a function for direct communication between passengers trapped in the elevator car 8 and the supervisor of the maintenance company 8 when the elevator is out of order. The intercom 6 in the car has a tail cord 7 After being connected to the remote monitoring terminal device 1 installed in the elevator machine room via the, the remote monitoring terminal device 1 automatically connects with the maintenance company 8 through the public telephone line 10 as in the above (1) and (2). To enable active calls.

Among these functions (1) to (3),
The intercom call function (3) is intended to prevent passengers in the car from panicking when the passengers are trapped in the elevator car, and is most required to be immediate and smooth. Function. In particular, in buildings such as condominiums in recent years, there are many cases where the manager is absent at night, on holidays, etc., and there is a great merit of being able to make direct calls to a maintenance company that operates 24 hours a day.

In order to realize this intercom communication function, an elevator remote monitoring device having the structure shown in FIG. 7 has been used conventionally. This conventional elevator remote monitoring device has a line connection circuit 12 for a public telephone line 11, an intercom connection circuit 13, an elevator, a CPU 14, which controls operation control, operation control of each part, and remote monitoring information transmission control.
The intercom 21 installed in the elevator car 20 and the call request button switch 22 of the intercom 21 are provided.

In this conventional elevator remote monitoring device,
When the CPU 14 continuously monitors the elevator by inputting an elevator state monitoring signal 15 indicating the state of its own elevator and detects an abnormality, the CPU 14 enters the failure handling mode and is connected to the intercom call request button switch 22 existing in the elevator car 20. The search for the active call request signal 23 is started. When it is detected from the call request signal 23 that the call request button switch 22 is pressed, the CPU 14 outputs the line connection command 16 to the line connection circuit 12,
In response to this, the line connection circuit 12 controls a series of line connection operations such as on-hook and automatic dialing of the telephone number of the maintenance company.

Therefore, when the line with the maintenance company is established, the CPU 14 instructs the intercom connection circuit 13 to
The intercom connection command 17 is output, and in response to this, the intercom connection circuit 13 connects the intercom 21 to the public telephone line 11 so that the supervisor of the maintenance company and the passengers trapped in the car can directly talk with each other. It can be so.

[0012]

However, such a conventional elevator remote monitoring device has the following problems.

The intercom allows the maintenance company and passengers in the elevator car to communicate directly with each other.
The reason why we are only limited to the failure response mode by U is that in the past, if the intercom could be used to contact the maintenance company at any time, the user often operated the call request button switch by mischief. Is. And when the number of elevators installed becomes huge, and the number of buildings that have remote monitoring contracts with maintenance companies increases,
The number of telephone lines from each elevator to the maintenance company will also increase, and if a line connection is made with the maintenance company in response to the input of the intercom call request button switch by mischief, it will cause an unnecessary increase in the line occupancy rate. This is because even if a call request is generated due to a car trap accident due to the breakdown of the above, there is a possibility that there is a problem that a long time is required to establish a call because the line is being used.

Therefore, the call function between the intercom in the car and the maintenance company is established only when the passenger in the car operates the intercom call request button switch at the time of elevator failure. In that case, the intercom call request button switch cannot be operated even if a confinement accident actually occurs,
There is a problem that intercom calls may not be used, resulting in a long-time confinement accident. It is the following case.

(1) When the passenger is a physically handicapped person such as a wheelchair or a short child, the intercom call request button switch cannot be operated.

(2) Passengers, such as the elderly and infants, do not know how to deal with failures and how to operate them.

The present invention has been made in view of the above conventional problems, and when passengers are trapped in a car due to a failure, the volume of sound generated in the car is set to a predetermined standard. If it is above, it will detect it and automatically connect the intercom to the maintenance company through the public telephone line so that it can talk with the maintenance company's monitoring staff, even if the person who can not operate the intercom call request button switch,
It is an object of the present invention to provide an elevator remote monitoring device that enables reliable communication with a maintenance staff member of a maintenance company and further reliably prevents long-term trapping.

[0018]

SUMMARY OF THE INVENTION An elevator remote monitoring apparatus of the present invention is a control apparatus for controlling transmission of remote monitoring information of an elevator, an intercom installed in an elevator car, and an input volume of a microphone of the intercom. The input sound volume detecting means for detecting the degree, the comparing means for comparing the sound volume detected by the input sound volume detecting means with the reference sound volume, and the intercom when the input sound volume is a predetermined amount or more based on the comparison result of the comparing means. Is connected to a remote monitoring center by a line, and an intercom connection means for enabling a direct call is provided.

In the above elevator remote monitoring device, the input sound volume detecting means smoothes the input sound signal waveform from the microphone of the intercom with a capacitor and outputs a voltage signal generated across the capacitor. be able to.

Further, in the above elevator remote monitoring device, the comparing means may compare the digital data obtained by A / D converting the signal detected by the input sound volume detecting means with the reference data.

[0021]

In the elevator remote monitoring apparatus of the present invention, the input sound level of the microphone of the intercom is detected by the input sound level detecting means, and the sound level detected by the input sound volume detecting means is compared with the reference sound volume by the comparing means. Based on the result, when the input sound volume is equal to or higher than a predetermined amount, the intercom connection means connects the intercom to the remote monitoring center to enable direct communication.

In this way, even if a passenger who cannot operate the intercom call request switch even if a confinement accident occurs, if a loud voice is heard (normally, a passenger who is confined due to a confinement accident is loud. Often screaming or yelling for help), and automatically allowing intercom to call maintenance companies.

[0023]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a circuit block diagram of an embodiment of the present invention, in which portions common to the conventional example shown in FIG. 7 are designated by the same reference numerals. The characteristic part of this embodiment is that an input sound volume detection circuit 31 is provided on a line connecting the intercom 21 to the intercom connection circuit 13, the level of a sound signal sent from the intercom 21 is detected, and this sound volume detection signal is compared with a comparison circuit. 33 and compares it with the reference volume signal 32, and outputs the comparison result signal 34 to the CPU 14
It is in the place where it was given to. Further, the CPU 14 turns on and off the intercom connection circuit 13 based on the comparison result signal 34, and simultaneously causes the line connection circuit 12 to perform a line connection operation.

The input voice detection circuit 31 is specifically shown in FIG.
The circuit configuration is as shown in (1), and includes a diode D1 that performs half-wave rectification of the audio signal 30, and a resistor R1, a capacitor C, and a resistor R2 that are circuit elements for smoothing the diode D1 and extracting a DC voltage. . The reference volume signal 32 given to the comparison circuit 33 is a voltage signal from the variable resistor VR and can be set to an appropriate value by adjusting the resistance value of the variable resistor VR.

Next, the operation of the elevator remote monitoring device configured as described above will be described.

When a confinement accident occurs due to an elevator failure, failure information is added to the elevator status monitoring signal 15 and is input to the CPU 14. Also, if a passenger who is trapped operates the intercom call request button switch 22 in the car 20, the call request signal 23 changes to CP.
Input to U14.

Therefore, the CPU 14 gives a line connection instruction 16 to the line connection circuit 12 and at the same time gives an interphone connection instruction 17 to the interphone connection circuit 13 under the AND condition of the failure signal and the interphone call request signal.
In this way, the line connection circuit 12 connects to the public telephone line 11, automatically dials the telephone number of the maintenance company registered in advance, and allows passengers in the car to talk with the maintenance company surveillance staff through the intercom 21. is there.

Further, in the elevator remote monitoring apparatus of this embodiment, even if the failure signal 15 is input, if the intercom call request signal 23 is not input, the intercom is not connected, but passengers in the car When loudly speaking, the volume is detected and the intercom 21 is automatically connected to the maintenance company so that the passenger can talk with the maintenance staff of the maintenance company.
It is as follows.

That is, a passenger trapped in the car 20 is startled and makes a loud voice, or a child cries and cries.
The microphone 1 picks up and inputs the audio signal 30 to the input sound volume detection circuit 31.

In the input sound volume detection circuit 31, the variable resistor VR
Although the reference voltage signal 32 is given to the comparison circuit 33 by the, the audio signal 30 is also half-wave rectified by the diode D1, converted into a DC voltage by the resistor R1, the capacitor C, and the resistor R2, and input to the comparison circuit 33. .

Therefore, in the comparison circuit 33, the reference voltage signal 3
2 is compared with this input volume voltage signal, and if the input volume voltage signal is larger than the reference voltage signal 32, the determination signal 34 that the passenger is trapped in the car 20 is CPed.
Give to U14.

Therefore, the CPU 14 performs the AND condition of the determination signal 34 and the elevator failure signal 15 in the same manner as when the intercom call request signal 23 is input.
A line connection command 16 is given to the line connection circuit 12, and at the same time,
Intercom connection command 17 is issued to the intercom connection circuit 13.
give. In this way, the line connection circuit 12 connects to the public telephone line 11, automatically dials the telephone number of the maintenance company registered in advance, and allows passengers in the car to talk with the maintenance company surveillance staff through the intercom 21. is there.

Here, the reference voltage signal is the variable resistance V
It is set and adjusted by R, but its size is
Normal person's voice during conversation is + 10d against ambient noise
Since it is about B, if the noise in the car at the site where the elevator is installed is about +15 to 20 dB, it is possible to reliably establish the intercom call automatically.

The above series of processing operations of the CPU 14 are shown in the flowchart of FIG. 3, but if the elevator state monitoring signal 15 is input (step S1) and it is determined that there is an abnormality (step S2), an intercom call is made. When there is the request signal 23 (steps S3 and S4), the line connection command 16 is output and the interphone connection command 17 is also output to enable the interphone call (steps S5 to S4).
7).

Even if the intercom call request signal 23 is not input in step S4, the intercom 21
If the volume of the voice input to is equal to or higher than the reference value (steps S8 and S9), the line connection command 16 and the interphone connection command 17 are output in the same manner to enable the intercom call (step S5). ~ S7).

In this way, although a confinement accident occurred, a person with a physical disability, a small child, the elderly, etc. could not reach the intercom call request button switch, or the passenger panicked and forgot to operate the intercom. Even if the intercom call request is not issued due to lack of awareness, if the trapped passenger cries or panics and calls for help in a loud voice, that voice is picked up and the intercom call is automatically made. You will be able to

FIG. 4 shows another embodiment of the present invention. In order to automatically detect the voice in the car and automatically establish the intercom call, the CPU 14 is provided with a comparison function so that the intercom 21 picks up the voice signal 30. On the other hand, the digital data is applied to the CPU 14 by A / D conversion and compared with the digital data of the reference volume stored in the buffer 36 so that the line connection and the intercom connection are performed.

That is, the audio signal 3 of the intercom 21
0 is quantified by the input sound volume detection circuit 31, and this is converted into sound volume digital data by the A / D converter 35 to generate CP.
I'm giving it to U14. Further, the CPU 14 is provided with a buffer 36, in which reference digital data is preset. The other parts common to the first embodiment shown in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

Therefore, the audio signal 30 in the car 20 input to the microphone of the intercom 21 is input to the input volume detecting circuit 3
It is input to 1 and quantified, and then is input to the A / D converter 35 and converted into volume digital data 37, which is input to the CPU 14.

The CPU 14 uses the elevator state monitoring signal 1
When the abnormality occurrence of No. 5 is detected and the mode corresponding to the failure is detected, the volume digital data 37 is searched, and the reference volume digital data set in the buffer 36 in advance (this reference volume digital data is also used in the first embodiment). Similar to the example, the surrounding noise is set to be about 15 to 20 dB). Here, if the volume digital data 37 is larger than the reference volume digital data, the CPU 14 establishes a telephone call between the maintenance company and the intercom 21 via the telephone line 11 as in the case described above.

FIG. 5 shows the operation procedure of the CPU 14, in which the elevator state monitoring signal 15 is input (step S
1) If it is determined that there is an abnormality (step S2), if there is an intercom call request signal 23 (step S2).
3, S4), the line connection command 16 is output, and the interphone connection command 17 is also output to enable the interphone call (steps S5 to S7).

Even if the intercom call request signal 23 is not input in step S4, the intercom 21
The volume digital data 37 of the voice to be input to is input (step S10), the reference volume digital data is fetched from the buffer 36 (step S11), these are compared, and if the input volume digital data is larger (step S12). The line connection command 16 is output in the same manner as when the intercom call request is issued, and the interphone connection command 17 is also output to enable the interphone call (steps S5 to S7).

In this way, if the noise inside the car that is caught by the intercom is greater than a predetermined value, it is considered that a car trap accident has occurred, and the intercom is forcibly connected to the maintenance company, and the inside of the car and the maintenance company By making it possible to talk to each other, it is possible to give a sense of security to passengers who are trapped.

The present invention is not limited to the above-described embodiment. For example, when the ambient noise fluctuates significantly depending on the time zone, the buffer 36 is used as a ring buffer and the CPU 14 is suitable. The volume digital data is sampled at regular intervals to sequentially update the data in the buffer 36, the average value of the data composed of a plurality of bytes is taken, and this is used as the current ambient noise data. If there is large input volume digital data, it may be determined that a trapping accident has occurred.

In each of the above embodiments, the volume that is +15 to 20 dB higher than the ambient noise is used as the reference volume for comparison with the input volume, but this value is not particularly limited, and the reference volume greatly depends on the surrounding environment. Therefore, it is desirable to experimentally determine the reference volume for each site so that a confinement accident can be reliably determined.

[0047]

As described above, according to the present invention, the input volume of the intercom microphone is detected by the input volume detecting means, and the volume detected by the input volume detecting means is compared with the reference volume by the comparing means. Based on the comparison result, when the input sound volume is equal to or higher than a predetermined amount, the interphone connection means connects the interphone to the remote monitoring center to enable direct communication, so that even if a confinement accident occurs, the intercom If a passenger who cannot operate the call request switch makes a loud voice (usually, a passenger trapped due to a confinement accident often calls out for help), the intercom automatically You can talk to the maintenance company through the service and improve the service.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a detailed configuration of an input sound volume detection circuit and its peripheral circuits in the above embodiment.

FIG. 3 is a flowchart showing the operation of the CPU in the above embodiment.

FIG. 4 is a circuit block diagram of another embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the CPU in the above embodiment.

FIG. 6 is a system configuration diagram of a general elevator remote monitoring device.

FIG. 7 is a circuit block diagram of a conventional example.

[Explanation of symbols]

 11 public telephone line 12 line connection circuit 13 intercom connection circuit 14 CPU 15 status monitoring signal 16 line connection command 17 interphone connection command 20 elevator car 21 intercom 22 intercom call request button switch 23 intercom call request signal 30 intercom voice signal 31 input volume detection Circuit 32 Reference volume signal 33 Comparison circuit 34 Judgment signal 35 A / D converter 37 Volume digital data 36 Buffer

Claims (3)

[Claims] 1. A control device for controlling transmission of remote monitoring information of an elevator, an intercom installed in an elevator car, an input volume detecting means for detecting a level of an input volume of a microphone of the intercom, and the input volume. Based on the comparison result of the comparison means of the sound volume detected by the detection means and the reference sound volume, when the input sound volume is a predetermined amount or more, the intercom is connected to the remote monitoring center to establish a direct call. An elevator remote monitoring device comprising an intercom connection unit that enables the intercom. 2. The input volume detecting means smoothes an input voice signal waveform from a microphone of an intercom with a capacitor and outputs a voltage signal generated between both ends of the capacitor. The elevator remote monitoring device according to 1. 3. The elevator remote according to claim 1, wherein the comparison means compares digital data obtained by A / D converting the signal detected by the input volume detection means with reference data. Monitoring equipment.