JPH0444450A - Remote supervisory equipment - Google Patents

Abstract

PURPOSE:To eliminate the need for repetitive automatic dialing from a supervisory center by operating an operating means of a terminal equipment in response to switching command and selecting an information transfer path of a changeover means so as to establish the communication state between a relevant terminal equipment and the supervisory center for implementing communication. CONSTITUTION:When a supervisory center 12 makes communication with any of terminal equipments 11a-11n, the supervisory center 12 makes automatic dialing to send a dial signal and when the dial signal (bell incoming signal) reaches the terminal equipment 11a through a telephone line L, a controller 14a discriminates whether or not a terminal code signal is its own code and sends a reception command signal to a decoded destination when the code is not its own code. In this case, polling to transmitters 13a-13n is implemented by sending a reception command signal from the terminal equipment 11a to the terminal equipments 11b-11n through a transmission line l. Thus, the communication between the supervisory center 12 and each of the terminal equipments 11a-11n is implemented without repetitive automatic dialing.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote monitoring device, and more particularly, to a remote monitoring device that monitors terminal devices provided in a plurality of hills at a monitoring center via a telephone line. It's about Shiko.

[Prior Art] Buildings S are generally equipped with elevators and other various equipment in order to provide convenience and a comfortable environment to building users. If any of these equipment malfunctions, it will have a major impact on building users, so the above equipment will be remotely monitored by a monitoring center via telephone lines, and appropriate measures will be taken immediately in the event of an abnormality. It is now possible to take the following measures.

FIG. 4 is a block diagram showing the structure of a conventional remote monitoring device of this type.

The conventional remote monitoring device shown in FIG. 4 includes terminal equipment 1a, 1b, .
...1n, and a monitoring center 2 equipped with a communication device 6 that communicates with these terminal devices 18 to 1n via a telephone line.

The above-mentioned telephone lines are sequentially connected in cascade from the uppermost terminal device 1a set at the highest level among the terminal devices 1a to 1n to the lowermost terminal device In set at the lowest level,
That is, the upper terminal device 1a is first connected to the monitoring center 2 via the telephone diagram vAL, the terminal bag filb is connected to the upper terminal device 1a, and the lower terminal devices In are sequentially connected in the same way.

For example, the above-mentioned host terminal device 1a includes a control device 3a that performs necessary control, a line monitor 4a that monitors the status of the telephone diagram '4IAL, and a switching means that switches the information transmission path, such as a switching device 5a. There is.

This switching device 5a has one switching terminal A connected to the control device 3a and the other switching terminal B connected to the terminal bag flb set in the lower order. The transmission path is normally switched to the switching terminal B side as shown in FIG. In addition, other terminal devices 1b~
1n also has a similar configuration.

In this conventional remote monitoring device, when the monitoring center 2 retrieves monitoring data from any of the terminal devices 1a to 1n, the monitoring center 2 automatically dials 7 and outputs a transmission signal. At this time, each switch 53 to 5
Since the control devices 3a to 3n are connected in cascade via the line monitors 48 to 4n, the above-mentioned transmission signals are detected by the respective line monitors 48 to 4n.

Note that the above numerical value of the number of transmission signals is determined by the upper control device 3.
It is predetermined in accordance with each of the control devices 3a to 3n so that the value for a is the smallest and the value for the lower control device 3n is the largest.

For example, the monitoring center 2 calls the host terminal device 1a.
When the transmission signal of the minimum number of times (i.e., If) is output, the control device 3a of the host terminal device 1a becomes activated, and the information transmission path of the switch 5a changes from the switching terminal B side to the switching terminal A side. The communication state with the monitoring center 2 is established. As a result, other terminal devices 1b to 1
ni is in a state of being disconnected from the monitoring center 2. Next, the monitoring data is retrieved from a storage section (not shown) of the control device 3a, and transmitted to the monitoring center 2, where the monitoring data is analyzed. After communicating with the terminal device ia in this manner, the monitoring center 2 rewrites the signal to a second outgoing signal having a larger signal line value than the first outgoing signal, and ends the communication. At this time, the switch 5a
As shown in FIG. 4, the switch is switched to the switching terminal B side to return to the normal state.

Next, when the monitoring center 2 automatically dials again and outputs the second transmission signal, the information transmission path of the switch 5b is switched from the terminal B side to the terminal A side by the second transmission signal, as in the case described above. Terminal device 1b and monitoring center 2
A communication state is established with. Similarly, communication between other terminal devices and the monitoring center 2 is performed sequentially.

In the conventional remote monitoring device configured in this way, there is no need to provide telephone lines between the monitoring center 2 and each of the terminal devices 18 to 1n, that is, the number of telephone lines can be reduced.

``Problems to be Solved by the Invention'' By the way, in the conventional remote monitoring device described above, when communicating between the monitoring center 2 and each terminal device 1a=ln, the terminal devices 18 to 1n are Not only is it necessary to sequentially perform automatic dialing for a number of times equivalent to the number of pieces, but also only for a number of times equivalent to the above number in order to return the outgoing signal corresponding to the lower terminal device in to the outgoing signal corresponding to the upper terminal device 1a. Since automatic dialing is required, there is a problem in that it takes a lot of time to communicate between the monitoring center 2 and each of the terminal devices 1a to 1n.

The present invention has been made in view of the actual situation in the prior art, and its purpose is to facilitate communication between the monitoring center and each terminal device without requiring the monitoring center to repeatedly dial automatically. The object of the present invention is to provide a remote monitoring device that can perform the following tasks.

[Means to solve the problem]

In order to achieve this object, the present invention provides a terminal device that is installed in each of a plurality of buildings and has a switching means for switching the information transmission route, and a terminal device that is installed at the top of the terminal devices and that is installed at the top of the terminal device. It includes a telephone line that is sequentially connected in cascade to lower terminal devices set at a lower level, and a monitoring center that has a communication device that communicates with the terminal device via this telephone line, and the monitoring center controls the terminal device. In the remote monitoring device to be monitored, output means is provided in the monitoring center and outputs a terminal code signal for identifying each of the terminal devices, and a terminal device provided in the upper terminal device is selected that corresponds to the terminal code signal. a selection means, a communication means provided between the higher-level terminal device and other terminal devices for communicating between the terminal devices, and a communication means provided in each terminal device and configured to switch the switching means in response to a switching command output from the selection means. It has an actuating means for actuating it and a configuration provided therein.

[For production]

Since the present invention is configured as described above, when the monitoring center automatically dials the higher-level terminal WiF and outputs the terminal code signal for identifying the terminal device by the output means, the higher-level terminal device outputs the above-mentioned terminal code signal by the selection means. Select the corresponding terminal device.

At this time, if the higher-level terminal device itself is selected, the operating means of the higher-level terminal device operates to switch the information transmission path of the switching means, establish a communication state between the higher-level terminal device and the monitoring center, and start communication. Let's do it.

On the other hand, if another terminal device is selected, the host terminal device communicates with the selected terminal device via the communication means provided between it and the other terminal device, and outputs a switching command from the selection means. do. Accordingly, the operating means of the terminal device operates in response to the switching command, switches the information transmission path of the switching means, establishes a communication state between the corresponding terminal device and the monitoring center, and performs communication. . This allows communication between the monitoring center and each terminal device without requiring the monitoring center to repeatedly perform automatic dialing.

〔Example〕

Embodiments of the remote monitoring device of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 are explanatory diagrams showing one embodiment of the remote monitoring device of the present invention. FIG. 1 is a block diagram showing the configuration of the remote monitoring device, and FIG. FIG. 3 is a flowchart showing the processing procedure in another terminal device.

In FIG. 1, the same reference numerals are given to the same parts as those shown in FIG. 4 described above.

The remote monitoring device of this embodiment shown in FIG.
Similarly to the conventional device shown in 1.
lb, =41n and these terminal bags Wt118~
11n via a telephone line. The telephone line mentioned above is sequentially connected to the terminal bag! ! connected, that is, first the upper terminal device 1
1a is connected to the monitoring center 12 via a telephone line,
A terminal device 11b is connected to the upper terminal device 11a, and in the same way, the lower terminal devices 11n are sequentially connected.

The remote monitoring device of this embodiment sends to the monitoring center 12 a terminal code signal that identifies the communication device 6 that communicates with the terminal devices 11a to 11n via the telephone line, and each of the terminal devices 11a to lln. It is provided with an output means for outputting, for example, a terminal code output unit 7, and a communication line β between the upper terminal device 11a and the other terminal devices 11b to lln.

The above-described upper terminal device 11a includes a transmission device 13a that is connected to other terminal devices 11b = 11n via communication '41A1, and a control device that controls this transmission device 13a, the line monitor 4a, the switch 5a, etc. 14a. Similarly, the terminal device fllb includes a transmission device 13b connected to the upper terminal device 11a via a communication line l, this transmission device 13b, a line monitor 4b, and a switch 5b.
and a control device 14b that controls the following. The same applies to other terminal devices 11n, etc.

In addition, the control device 14a of the above-mentioned host terminal device 11a transmits the data added with the terminal code signal sent from the monitoring center 12 from the transmission device 13a via the communication line 1 to the terminal device in a predetermined order. 11b to 11n, the terminal devices 11b to 11n respond with their own codes, and send and receive data by an operation in response to a request from the monitoring center 12, a so-called polling operation. For example, the switch 5a of the upper terminal device 11a is
The electrical connection is maintained while one terminal is switched to the other terminal, and the electrical connection is cut off after the switching is completed.

Note that the selection means provided in the upper terminal device 11a and for selecting a terminal device corresponding to the terminal code signal is the control device 14.
a, the upper terminal device 11a and other terminal devices H
A communication means provided between terminal devices b and 11n for communicating between the terminal devices is constituted by transmission devices 13a to 13n and communication line l, and is provided in terminal devices 11a to lln and responds to a switching command output from the above-mentioned selection means. Depending on the switching device 5a~
5n is the control device 14a to 14n.
included in each.

In this embodiment, from the monitoring center 12 to the terminal device 1
When communicating with any of terminal devices 1a to lln, the terminal device 11a operates according to the processing procedure shown in FIG. That is, the monitoring center 12 automatically dials and sends an outgoing signal as a hand @Sl, detects the above outgoing signal by the outgoing call via the telephone line, and then returns to the monitoring center 12 in step S3.
Determine whether the terminal signal transmitted from the terminal is of the own code or not, and if
The monitoring center 12 and the host terminal device 11a serve as the first S5.
The communication is completed by exchanging data with the terminal.

On the other hand, if it is determined by the selection means in step S4 that the terminal code signal is not the own code, then step 11
[S 6, the control device 14a decodes the terminal code signal and hands! A reception command signal is transmitted to the other party for decoding as 1+l S7. At this time, the reception command signal is sent to the terminal device 1.
Polling of the transmission devices 138 to 13n is performed by transmitting data from 1a to the terminal devices 11b to 11n via the transmission line 1.

That is, the control device 14a of the higher-level terminal device 11a sends data including the terminal code signal to each terminal 'AW11b-lln according to the order of the terminal devices 11b-lln determined by the order. In contrast, the terminal device 11b
=11n is self-coated, then S is -1
- is sent as a response signal, and if the code is not the own code, a response signal of V〇- is sent. In this way, the terminal device 11b "ll" responds to the terminal code signal.
Select n and perform communication.

Next, in step S8, the upper control device 14a determines whether a received signal has been received from the other party, for example, the lower terminal device ff1lln, and if it is determined that this signal has been received, in step S9, the upper control device 14a switch 5n
The terminal device 14a determines whether it has received a signal indicating that the switching operation from the terminal B side to the terminal A side has been completed, and in step 510, the upper terminal device 14a changes the information transmission path of the switch 5n to the terminal A side.
Switch from to terminal B. As a result, the monitoring center 12 and the II training device 14n of the lower terminal device tin are connected via the telephone line and the switching devices 5a to 5n. Then, the communication status between the printer 12 and the terminal device lln is established by monitoring.

Further, the other terminal bags 220 to 11 are arranged to operate according to the processing procedure shown in FIG.

For example, if the terminal code signal transmitted from the monitoring center 12 corresponds to the lower terminal device ZHn;, then the procedure Sll is forced to restrain the control device 1i; If it is determined that the above-mentioned command has been received, a signal indicating that the reception has been completed is transmitted to the higher-level terminal device 11a via the communication line 1 in step 512. Next, in step 513, the m-signal transmission path of the switch 5n is switched from the terminal 'F-B side to the terminal A side, and in step 514, a switching completion signal is sent to the terminal device 11.
It is transmitted to a via the 1ffi line l.

Next, as step Si5, the information transmission path of the switch 5a of the upper terminal device 11a is switched from the Mizuko side to the terminal B side,
A switching confirmation signal is transmitted from the upper terminal 11a to the monitoring center 12, and the monitoring center 12 confirms reception. As a result, the monitoring center 12 and the control device 14n of the lower terminal device 11n are connected via a telephone line and the switching devices 5a to 5n, and the monitoring center 12 and the lower terminal device 1! 11
Since the communication state between n is established, hand 11fiSI6
Data is exchanged between the monitoring center I2 and the lower terminal device 11n, and the communication ends.

In the embodiment configured in this way, the monitoring center 12 can be easily dialed by simply automatically dialing the host terminal device 11a without requiring the monitoring center 12 to repeatedly perform automatic dialing to make a call.
2 and each of the terminal devices 11a to lln.

Note that in this embodiment, the transmission device 1 of the upper terminal device 11a
3a and the other transmission devices 13b to 13n, but instead of this polling method, a current loop method may be used.
Further, transmission may be performed using an optical loop method using an optical fiber as the communication line l.

〔Effect of the invention〕

Since the present invention is configured as described above, communication between the monitoring center and each terminal device is possible without requiring the monitoring center to repeatedly perform automatic dialing. (can be done,
- Compared to the conventional system where the monitoring center repeatedly dials, it is faster; this monitoring center and each terminal bag! It is possible to communicate with the

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams showing one embodiment of the multi-layered monitoring device of the present invention, FIG. 1 is a block diagram showing the configuration of the remote monitoring device, and FIG. 2 is a diagram showing the processing procedure in the upper terminal device. FIG. 3 is a flowchart showing processing procedures in other terminal devices, and FIG. 4 is a block diagram showing the configuration of a conventional remote monitoring device. 5a to 5n...Switching device (switching means), 6...Communication device, 7...Output means (terminal code output unit), lla
~11n...Terminal device, 13a-13n...Transmission device, 14a-14n...Control device, L...Telephone line, e...Communication line. Figure 1 Figure 2 Figure 2

Claims (1)

[Claims] (1) Terminal devices that are installed in multiple buildings and have switching means for switching information transmission paths, and among these terminal devices, the upper terminal device is set at the highest level, and the lower terminal device is set at the lowest level. A remote monitoring device that monitors the terminal device by the monitoring center, and includes a telephone line that is sequentially connected in cascade to an output means provided in the monitoring center and outputting a terminal code signal for identifying each of the terminal devices; a selection means provided in the higher-order terminal device and configured to select a terminal device corresponding to the terminal code signal; communication means provided between the terminal device and the other terminal devices to communicate between the terminal devices; and actuating means provided in each terminal device to operate the switching means in response to a switching command output from the selection device. A remote monitoring device featuring: