JPS59101954A - Remote supervisory and controlling system - Google Patents

Abstract

PURPOSE:To execute transmission and reception of an alarm signal and an order call by connecting a telephone set board in which a terminal telephone set and a control device are connected, to a general subscriber telephone line, after an alarm transfer is ended and when there is no alarm. CONSTITUTION:In a master station 1, a subscriber telephone set 2 of a push- button dial is installed. The telephone set 2 is connected to a switchboard 5 through a subscriber telephone line 3, and is connected to a transmission circuit network control device 7 of a slave station 6 through a subscriber telephone line 3'. A slave station 6 is provided with a telephone set board 14, and a terminal telephone set 15 for a call and a control device 12 for receiving a push- button dial signal and converting it to a control signal for controlling a device in the slave station 6 are connected to the board 14. Also, the board 14 is connected to the general subscriber telephone line 3' after an alarm transfer is ended and when there is no alarm. As a result, transmission and reception of an alarm signal, and an order call can be executed by one subscriber telephone line.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to a remote monitoring and control system. In particular, it relates to a system suitable for building management and other monitoring and control via general public telephone lines.

[Description of prior art]

Conventionally, alarm notification devices that operate via general public telephone lines either automatically make a call to a subscriber phone and forward the alarm when an alarm occurs; There are some that perform automatic transmission and alarm forwarding. Furthermore, there are two types of alarm transfer means: one based on a data transmission method and the other using audio. Two types of systems that use this sound have been put into practical use: one that automatically plays back pre-recorded audio tapes and one that uses voice synthesis.

Since such conventional methods use public telephone lines, the alarm transfer source, that is, aggregates multiple monitored alarms, converts them into data signals, voice, etc. suitable for transfer using telephone lines, and sends them to the telephone. In addition to transmitting and receiving alarm contents between the station that makes the call and transmits the alarm contents (hereinafter referred to as the "slave station") and the alarm monitoring light (hereinafter referred to as the "master station"), telephone calls can be made by switching the line. Calls are possible. However, this telephone call is not between the master station and the slave station, but between the alarm transmitting terminal (i.e., the location where the alarm sensor is installed) and the master station, and is a single telephone call for issuing an alarm or discussing the matter. There is still no general-purpose supervisory control system that can be used for multiple subscriber telephone lines.

In other words, if all alarms are transferred to the night duty room of the company responsible for building management at night,
For example, there is already a system that transfers the contents of a call over an intercom in an elevator when a person is inside the elevator and the door cannot be opened. However, if you want to transfer this and other alarms such as temperature abnormalities and low water pressure, currently two subscriber telephone lines are required for alarm transfer, which is extremely difficult considering the line traffic. It has become uneconomical.

[Purpose of the invention]

The present invention improves on this point, and aims to provide an alarm monitoring and control system that enables the transmission and reception of alarm signals and meeting calls via a single subscriber telephone line.

[Key points of the invention]

The present invention provides a remote monitoring method in which alarms are aggregated at an alarm transfer source, and the alarm content is transferred by voice synthesis using a general subscriber telephone line. A telephone board that accommodates the lines and selects the required line and connects it to the general subscriber telephone line after the alarm information by the voice synthesis ends or when there is no information, and a telephone board that receives the push button dial signal and controls it as necessary. It is characterized by comprising a control device that converts the signal into a signal, and a push-button subscriber telephone to which the alarm is transferred.

Furthermore, it is preferable to use an intercom type telephone with an echo suppressor or echo canceller, which can make a call only when an alarm occurs, and in this state can make a call by simply pressing the call button momentarily.

[Explanation based on examples]

An embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a block diagram of main parts of a first embodiment of the present invention. In FIG. 1, l is a master station, and a subscriber telephone set 2 equipped with a push-button dial is installed.

The subscriber telephone set 2 is connected to an exchange 5 via the subscriber telephone line 3, and the exchange 5 is connected to the line network control device 1 of the slave station 6 via the subscriber telephone line 3°.

An alarm aggregation device 8 is connected to this line network control device 7. An alarm transmission terminal (for example, a ground air output contact) 10 is connected to the alarm aggregation device 8 . A display panel 11 and a control device 12 are connected to this alarm aggregation device 8 . This control device 12
The controlled terminal 13 is connected to.

Further, the control device 12 is connected to the telephone board 14 . A terminal telephone 15 and a relay 16 are connected to this telephone board 14. Further, in FIG. 1, 18 is a subscriber telephone set, and 16' is a relay contact of the relay 16.

The characteristic operation of the present invention will be explained using such a circuit.

The circuit network control device 7 is capable of automatically making and receiving telephone calls, and is installed by the telephone office or based on a contract with the telephone office. The alarm aggregation device 8 collects alarms from a large number of alarm sensors through individual or multiplexed alarm collection lines. In the alarm aggregation device 8, first, the outgoing alarms are written in the memory according to the order in which the alarms were issued. Next, the alarm order is arranged according to the designated priority, and the contents are maintained until the alarm is restored. On the other hand, when it is detected that even one alarm has been issued, the alarm aggregation device 8 gives an activation signal to the line network control device 7.

The line network control device 7 makes a call to the subscriber telephone line toward the master station 1.

At the master station 1, the bell of the subscriber telephone set 2 rings in response to the incoming call from the slave station 6, and the person in charge stationed there answers the call. This response is detected by the line network control device 7, and the line network control device 7 sends a control signal to the alarm aggregation device 8. As a result, the alarm aggregation device 8 sends the alarm contents to the speech synthesis device within itself in accordance with the order arranged according to the priority. In accordance with the sent memory contents, the speech synthesizer synthesizes the contents into natural language, repeats it a predetermined number of times from the outside, and transmits it to the subscriber telephone line 3° via the line network control device 7.

After all alarm contents have been sent, if the subscriber telephone 2 is placed at the master station 1, the line network control device 7 detects this and sends a signal to the alarm aggregation device 8 to stop the operation, thereby completing the series of operations.

However, if the hook-on by the master station l is still not detected even after the transmission of the audio alarm content is completed, the alarm aggregation device 8 is notified from the outside and after a specified time interval, transmits the audio alarm content again. Send. The number of retransmissions and the interval can also be specified externally or in advance. If hook-off is still not detected after a certain number of transmissions, the alarm aggregation device 8 sends an alarm transmission end signal to the line network control device 7.

The line network control device 7 receives this signal and forcibly disconnects the originating line.

On the other hand, if the alarm aggregation device 8 hooks on to the master station 1 before it has finished transmitting all the alarm contents, all the operations in the alarm aggregation device 8 return to the initial state and restart the operation from the origination of the subscriber telephone. In addition, the line network control device 7 stores the number of the master station 1 in memory, but this number can also be used to store not only the numbers of the master station 1 but also the numbers of multiple stations and their calling order. If the telephone number 1 does not respond for a certain period of time, a call will be made again to the next subscriber telephone.

Next, we will discuss the case where the line network control device 7 receives a call from outside. First, when an incoming call is detected, the line network control device 7 sends the same control signal to the alarm aggregation device 8 as when the master station 1 responds in the case of an outgoing call. At this time, if the alarm memory remains, it is read out and a sound is sent out.

However, in this case, unlike the case where a new alarm is generated and a call operation is performed, a repeat call is not made even if the caller hooks off before all alarm contents are sent out.

It is assumed that the slave station 6 is connected to an external telephone, whether the call is originating from the slave station 6 or incoming to the slave station 6 . Now, assuming that the external telephone is the master station 1, the push button dial operation is performed on the subscriber telephone set 2 during the interval after the transmission of the audio warning signal from the slave station 6 is completed.

The alarm aggregation device 8 is equipped with a multi-frequency receiver that receives the multi-frequency signal of the push-button dial signal from the button phone, receives the push-button dial signal, converts it into a required signal, and sends it to the control device 12. Send. Incidentally, upon receiving the control signal, the issuance of the audio warning is subsequently stopped. Control 1 device 1
2 receives and decodes the converted control signal, and if it is an understandable code, sends out the necessary control signal to each control line contained therein. In FIG. 1, the relay of the controlled terminal 13 is operated by transmitting a ground signal.

Further, if this control signal is a control signal and a telephone number of a telephone installed in the alarm transmission terminal IO or the like, the control device 12 sends a telephone number selection signal to the telephone board 14. The telephone board 14 has a power source for operating the terminal telephone 15 and a signal source for ringing a bell, receives a control signal, selects a predetermined telephone, and sends out a signal. When the terminal hooks off due to a ringing sound, the telephone board 14 detects this and sends hook-off information to the alarm aggregation device 8 through the control device 12. When the alarm aggregation device 8 receives this and ends the audio wIg transmission, it sends a signal to this effect to the telephone board 14 through the control device 12. The relay 16 of the telephone board 14 is activated by this signal.

Therefore, the subscriber telephone line 3'', which was connected to the alarm aggregation device 8 through the line network control device 7, is reconnected to the telephone board 14 through the relay contact 16' and connected to the hooked-off telephone. In the state, master station 1,
Regardless of which slave station 6 makes the call, the voice alarm transmission has already been completed once, so if either one hooks on, the line will be disconnected. At this time, due to the operation of the intercom type telephone, which will be described later, the communication current on the terminal side is also interrupted momentarily.

Next, a call from a terminal telephone will be described.

In the telephone panel I4, in order to detect the hook-off of each energized terminal telephone I5, a telephone power supply voltage is applied to all telephones, but no telephone current flows in the hook-on state.

However, when the terminal telephone 15 hooks off, the telephone current is supplied. As a result, the telephone board 14 is connected to the terminal telephone 1.
5 is hooked off, this line is selected and extended to the line in the direction of the line network control device 7 in the telephone board 14. Next, the controller 12 informs the controller 12 that there is a hook-off signal.
The alarm is generated to the alarm aggregation device 8 via. If the alarm aggregation device 8 is in the process of sending out an audio warning, it waits for this end, and if it is not in progress, it immediately sends an audio warning end signal to the control device 12.
It is sent to the telephone board 14 via. This allows relay 1
6 is operated and the terminal telephone I5 is connected to the subscriber telephone line 3'. Regarding cutting, the same operation as in the above case is performed.

In addition, when one terminal telephone is busy and another telephone is hooked off, the line in the direction of the line network control device 7 in the telephone panel 14 is in use, so this telephone
A 0 Hz intermittent tone, similar to that used in the past when a normal subscriber telephone line is busy, is sent out to notify that a call cannot be made.

The display board 11 displays the status of alarms, controls, telephone calls, etc. collected by the slave station 6 using lamps, etc., so that the status of alarms, controls, telephone calls, etc. that are aggregated by the slave station 6 can be seen at a glance. belongs to.

FIG. 2 is a block diagram of main parts of a second embodiment of the present invention. Considering the case where the terminal telephone 15 is installed in an elevator where an unspecified number of people go in and out, it is preferable to have an intercom-like configuration and to minimize external operations to prevent tampering. In order to meet such demands, the second embodiment uses an intercom with an echo suppressor or echo canceller for the terminal telephone 15 to enable hands-free and bidirectional communication, and also uses an intercom equipped with an echo suppressor or an echo canceller. alarm,
For example, a call can be made only when there is an abnormality in the elevator. That is, in FIG. 2, reference numeral 21 is an alarm contact associated with this terminal telephone, which is the same as the contact 21 in FIG. Reference numeral 21' indicates a contact that interlocks with the alarm contact 21, and reference numeral 22 indicates a rebound key that can be operated by a person who uses this telephone to make a call. 23 is the power supply O
This flip-flop 23 is centered by pressing the previous rebound key 22 in a reset cent type flip-flop which is held in the reset state at N. 24 is a relay, 24' is its relay contact, 25 is a low-pass filter for preventing the communication signal from affecting the flip-flop 23 since the power source for the flip-flop 23 and the communication power source are shared, and 26 is a low-pass filter for preventing the communication signal from affecting the flip-flop 23. 27 is a balanced wiring network of the hybrid transformer 26, 28 is an echo suppressor (or echo canceller), 29 is a transmitter, 30 is an amplifier, and 31 is a speaker. In addition, the line of this terminal telephone 15 is connected to the telephone panel 14 (Fig. 1).
It is connected to the.

In such a configuration, if no alarm associated with the telephone is occurring, contact 21, and therefore contact 21', is also disconnected. Therefore, the flip-flop 23 is not powered, and even if the telephone key 22 is pressed, the telephone is not in any operational state. Therefore, it is impossible to make a call when no abnormality occurs, and unnecessary calls cannot be made. However, if any abnormality occurs, the contact 21 closes and the alarm concentrator 8 (FIG. 1) first issues an audio alarm. At this time, the relay contact 21' is also closed, so the flip-flop 2
3 is supplied with power and held in a reset state. In the reset state, the relay 24 does not operate, and the telephone is still not in the calling state.

However, when the person desiring to make a call presses the bounce button 1!22, the flip-flop command is sent, the relay 24 is operated, and the relay contact 24° is closed, allowing the call to be made. The operation of the echo suppressor or echo canceller has already been put into practical use, so a description thereof will be omitted.

Since this phone operates as described above, footer-on operation is not possible. Therefore, when a call is made using this telephone, the line can only be disconnected by hook-on on the master station side. As mentioned above, if the master station 1 hooks on and the line connection is disconnected, the terminal phone Ml! Since the telephone power supply of +5 is also momentarily cut off, the flip-flop 23 is reset by this. Therefore, the relay 24 is restored, the relay contact 24° is opened, and all connections are disconnected.

〔Effect of the invention〕

As described above, according to the present invention, supervisory information transfer, control, and telephone calls all use voice and push-button dialing signals that are compatible with general public telephone lines, so a special master station device is not required, making the system economical. It has the effect of greatly contributing to the

Furthermore, as a side effect, there is no need for special training for the personnel at the master station on equipment installation, etc., and there is also the advantage that anyone can perform remote monitoring and control. In addition, the parent station can be easily changed, and the alarm forwarding destination number can also be selected as the pager number, so if you have Boke Soto Hel, the person watching can be within the range of Boke Soto Hel radio waves and close by. Having a push-button-dial telephone also allows the supervisor to monitor and control the system from a distance, no matter where they are located.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of main parts of a first embodiment of the present invention. FIG. 2 is a block diagram of main parts of a second embodiment of the present invention. ■...Master station, 2...Subscriber telephone, 3'3°...
Subscriber telephone line, 5...Switchboard, 6...Slave station, 7...
・Line network control device, 8... Alarm aggregation device, 10...
Alarm transmission terminal, 11... Display panel, 12... Control device, 14... Telephone panel, 15... Terminal telephone. Patent applicant representative patent attorney Naotaka Ide

Claims (2)

[Claims] (1) Includes a master station equipped with a telephone and a slave station equipped with an alarm aggregation device to which multiple alarm transmission terminals are connected. In a remote monitoring and control system that transfers data to a master station using a line, a slave station is equipped with a telephone board, which includes a terminal telephone for making calls, and a device that receives push-button dialing signals and controls devices within the slave station. and a control device for converting into a control signal for performing the above, and is configured to connect the telephone board to the general subscriber telephone line after the alarm transmission is completed and when there is no alarm. Supervisory control method. (2) The remote monitoring control system according to claim 11, wherein the terminal telephone is an intercom type telephone with an echo suppressor or echo canceller that can make a call only when an alarm occurs.