JPH02308398A - Remote monitoring device - Google Patents

Abstract

PURPOSE:To efficiently execute an operation test in a state that remote monitoring function is maintained by stopping the operation of an operation testing means, operating a switching means and connecting a terminal equipment through a communication line to a monitoring center. CONSTITUTION:When the operation test is executed between a testing device 4' and a monitoring center 2, a test state setting means 7 is operated and the using state of the communication line is confirmed by a first monitoring circuit 10b. Then, the testing device 4' is connected through a communication line 3 to the monitoring center 2 by a switching means 9a. Next, the operation testing means 7 is operated and test data are transmitted through the communication line 3 to the monitoring center 2. Then, the operation test of the monitoring center is executed. During this operation test, when abnormality occurs in a spot to be monitored and a second monitoring circuit 10a detects the connection request of a terminal equipment 1, the control means 7 is operated and the operation of the operation testing means 7 is stopped. Then, switching means 9a and 9b are changed over so that the terminal equipment 1 can be connected through the communication line 3 to the monitoring center 2. Afterwards, the connection request is displayed in a display means 12. Thus, even during the operation test by the testing device 4', when the abnormal state occurs in the spot to be monitored, abnormality information data can be immediately transmitted from the terminal equipment 1 to the monitoring center 2.

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 configured to perform an operational test of a monitoring center.

<Prior Art> FIG. 3 is a block diagram showing the configuration of a conventional remote monitoring device, in which a terminal device 1 for monitoring a plurality of monitored locations is connected to the a terminal of a switch 9; A reading device 8 for reading out the contents of a memory (not shown) is connected to the terminal device 1 , and is connected to a common terminal of the switch 9 or to a monitoring center 2 for monitoring the terminal device 1 via a communication line 3 .

On the other hand, a test device 4 is provided that sends test data to the monitoring center 2 and tests the operation of the monitoring center 2 in response to reports from the terminal device side.
85, a modulation/demodulation circuit 6, and a control circuit 7.

The network control port B5 of the test device 4 controls the communication line 3, such as detecting a calling signal and sending out a dial signal, and this network control circuit 5 is connected to the b terminal of the switching device. In addition, in the test device 4, a control circuit 7 that controls the operation of the test device 4 is connected to a modem circuit 6 that modulates and demodulates data to be AD converted and the network control circuit 5.
is connected to the screen printing circuit 5.

In the conventional remote monitoring device having such a configuration, in order to perform an operation test between the test device 4 and the monitoring center 2, the switch 9 is switched to the b terminal side and the test device 4 is monitored via the communication line 3. The network control circuit 5 is activated by a command from the control circuit 7, and the monitoring center 2 is called by means of automatic dialing.

When the monitoring center 2 responds to this call and the communication line 3 connects the monitoring center 2 and the network control circuit 5, the test data stored in the memory of the control circuit 7 is read out and modulated by the modulation/demodulation circuit 6. After that, it is transmitted to the monitoring center 2 via the network control circuit 5.

In this way, test data is transmitted from the control circuit 7 to the monitoring center 2 via the modulation/demodulation circuit 6 and the network control circuit 5 in accordance with the test procedure stored in the memory of the control circuit 7. The operating status is checked. After repeating the operation test by transmitting test data multiple times and confirming that the monitoring center 2 is in a normal operating state, the network control circuit 5 is activated by a command from the control circuit 7, the communication line 3 is opened, and the switching 9 is switched to the a terminal side.

Next, the contents of the reading device 8 are checked to confirm whether or not an abnormal state has occurred in the monitored part connected to the terminal device 1 during the above-mentioned operation test.

Operation tests such as those described above are conducted periodically, and the terminal device 1
When an abnormal state occurs in a monitored location connected to the This enables the remote monitoring device to always respond appropriately to the occurrence of abnormal conditions.

<Problem to be solved by the invention> In the conventional remote monitoring device described above, during an operation test using the test device 4, the switch 9 is switched to the b terminal side.
Even if an abnormal state occurs in a monitored location, the terminal device 1 cannot transmit abnormality reporting data to the monitoring center 2.

Therefore, it is necessary to frequently refer to the information stored in the memory in the terminal device 1 and check whether an abnormal state has occurred at the monitored location. Particularly when the monitored location is equipment such as an elevator, the occurrence of an abnormal state may lead to a serious accident. is required to be completely eliminated.

The present invention has been made in view of the current state of operation testing of remote monitoring devices as described above, and its purpose is to prevent the terminal device from operating if an abnormal state occurs at the monitored location even during the operation test using the testing device. An object of the present invention is to provide a remote monitoring device in which abnormality reporting data is immediately transmitted from a monitoring center to a monitoring center.

Means for Solving the Problems> In order to achieve the above object, the present invention includes a plurality of terminal devices, a monitoring center that monitors these terminal devices, and a method for transmitting and receiving data between the terminal devices and the monitoring center. In the remote monitoring device, the test device is equipped with a communication line that performs a test, and a test device that is connected to the communication line and that tests the operation of the monitoring center by transmitting test data to the monitoring center. a first monitoring circuit that monitors the use of the communication line of the terminal device; and a first monitoring circuit that monitors the use of the communication line of the terminal device; a second monitoring circuit that monitors a connection request; and a second monitoring circuit that operates according to the implementation schedule of the operation test and confirms the monitoring state of the first monitoring circuit; A test state setting means that is connected via the communication line and sets a test state; and a voltage setting means that operates simultaneously with the test state setting means and sets a voltage condition in the terminal device equivalent to that when the communication line is connected. an operation test means for transmitting the test data to the monitoring center via the communication line and testing the operation of the monitoring center; control means for stopping the operation of the operation testing means and activating the switching means to connect the terminal device to the monitoring center via the communication line when a connection request is detected; and activation of the control means. Sometimes, the configuration is such that a display means for displaying a connection request from the terminal device is provided.

According to the present invention, when performing an operation test between the test device and the monitoring center, the test state setting means is activated, the first monitoring circuit confirms the use state of the communication line, and the switching means confirms the usage state of the communication line. The test equipment is connected to the monitoring center via a communication line and the test status is set.

Then, the operation test means is activated and the test data is transmitted to the monitoring center via the communication line to perform an operation test of the monitoring center.

During this operation test, if an abnormality occurs in the monitored location and the second monitoring circuit detects a connection request for the terminal device, the control means is activated to stop the operation of the operation test means and connect the terminal device to the communication line. The switching means is switched to connect to the monitoring center via the display means, and the connection request is displayed on the display means.

Moreover, the voltage setting means operates simultaneously with the operation of the test state setting means, and voltage conditions equivalent to those when the terminal device is connected to the communication line are set.

<Example> Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.

Here, FIG. 1 is a block diagram showing the configuration of an embodiment, and the same parts as in FIG. 3 are given the same reference numerals. Moreover, FIG. 2 is a flowchart showing the operation of the embodiment.

As shown in FIG. 1, in the embodiment, the test device 4' includes a first line monitoring circuit 10b, a switching device 9a, and an ll1i control circuit 5.
, modulation/demodulation circuit 6, control circuit 7, display 12, input device 1
3. Second line monitoring circuit 10a, switch 9b and power supply 1
1.

The test device 4' is provided with connection terminals 14a and 14b,
The first line monitoring circuit 10b is connected between the connection terminal 14b and the common terminal of the switch 9a, the network control circuit 5 is connected to the b terminal of the switch 9a, and the a terminal of the switch 9a and the connection terminal 1 are connected.
A second line monitoring circuit 10a is connected between the lines 4a and 4a.

In addition, the control circuit 7 includes a network control circuit 5, a modem circuit 6, a first
A second line monitoring circuit 10b, a second line monitoring circuit 10a, a display 12, and an input device 13 are connected, and a network control circuit 5 and a modulation/demodulation circuit 6 are connected. And connection terminal 1
4a is connected to the common terminal of the switch 9b, the power supply 11 is connected to the d terminal of the switch 9b, and the switch 9a and the switch 9b
constitutes an interlocking switch.

A connection terminal 14b of this test device 4' is connected to the monitoring center 2 via the communication line 3, and a connection terminal 14a is connected to the terminal device 1 that monitors the monitoring equipment 1 to n.

Here, the first line monitoring circuit 10b is a line monitoring circuit that monitors whether or not the terminal device 1 is using the communication line 3, and the second line monitoring circuit 10a is a line monitoring circuit that monitors whether or not the terminal device 1 is using the communication line 3. This is a line monitoring circuit that monitors the presence or absence of a connection request to 3. The network control circuit 5 is a circuit that performs control of the communication line 3, such as detecting a calling signal and sending out an automatic dialing signal.The modulation/demodulation circuit 6 is a circuit that modulates and demodulates data to be AD converted. This circuit controls various operations of the test device 4'.

Next, the operation of the embodiment will be explained according to the flowchart shown in FIG.

By operating the input device 13, the transmission schedule for the operation test written in the memory (not shown) of the control circuit 7 is retrieved, and if there is a transmission request, the control circuit In response to a command signal from 7, the first line monitoring circuit 10b is activated, and it is determined whether or not the terminal device 1 is using the communication line 3.

If the determination in step S1 is NO, the process proceeds to step S2 where the switch 9a is switched to b by a command signal from the control circuit 7.
It can be switched to the terminal side. Next, the process proceeds to step S3, and in response to a command signal from the control circuit 7, automatic dialing is performed by the network control circuit 5 to call the monitoring center 2.

When the monitoring center 2 responds to this call, the monitoring center 2 and the testing device 4' are connected to each other via the communication line 3, and test data is transmitted from the control circuit 7 to the monitoring center 2.

In this case, test data written in advance in the memory of the control circuit 7 is modulated by the modulation/demodulation circuit 6, and this modulated test data is transmitted to the monitoring center 2 via the communication line 3. The operating state of the monitoring center 2 is checked according to the test procedure stored in the memory.

In this way, if an abnormal state occurs in the monitoring equipment while the test device 4' is performing an operation test using the communication line 3, a connection request signal to the communication line 3 is issued from the terminal device 1, and the The line monitoring circuit 10a of No. 2 detects this. Therefore, in step S4 of the flowchart of FIG.
A detection signal is input from the second line monitoring circuit 10a to the control circuit 7, and in step S6, an abnormality detection is displayed on the display 12.The process proceeds to step S5, where a command signal from the control circuit 7 causes the switch 9a to is switched to the a terminal side.

Therefore, the operation test is stopped, the abnormality reporting data is immediately transmitted from the terminal device 1 to the monitoring center 2 via the communication line 3, and the monitoring center 2 performs a remote monitoring operation.

If the determination in step S4 of the flowchart of FIG. 2 is No, the process proceeds to step S5 after the operation test is completed, and the switch 9a is switched to the a terminal side.

In the embodiment, when the switch 9a is switched to the b terminal side in step S2, the switch 9b interlocked with the switch 9a is switched to the d terminal side, and the power source 11 is supplied to the terminal device 1. This is because if the communication line 3 is left disconnected, the network control circuit (not shown) of the terminal device 1 will not operate normally. This is done to set the voltage conditions.

In this way, according to the embodiment, the test device 4'
Even if the operation test is performed using
Abnormality reporting data is transmitted from the terminal device 1. Further, since a message indicating the detection of an abnormality is displayed on the display 12 of the test device 4', the inspector can easily confirm the abnormality.

Furthermore, even if the switches 9a and 9b are switched, the terminal device 1 is always placed in the same voltage state as if it were connected to the communication line 3, so the transmission of the abnormality alarm data is not performed by the switch. Even if switching between 9a and 9b is performed, it is always performed stably.

<Effects of the Invention> As explained in detail above, according to the present invention, abnormality reporting data from the terminal device is immediately sent to the monitoring center even during an operation test, making the operation test more efficient while maintaining the remote monitoring function. It can be done.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a flowchart explaining the operation of the embodiment of the present invention, and FIG. 3 is a block diagram showing the configuration of a conventional remote monitoring device. It is. 1...terminal device, 2...monitoring center,
3... Communication circuit, 4'... Test equipment,
5...Network control circuit, 6...Modulation/demodulation circuit, 7...Control circuit, 9a, 9b...Switcher, 10a... Second line monitoring circuit, Job
...First line monitoring circuit, 11...Power source,]2...Display device, 13...Input device, 14a, 14b... ··Connecting terminal. Figure 1

Claims (1)

[Claims] a plurality of terminal devices, a monitoring center that monitors these terminal devices, a communication line that exchanges data between the terminal devices and the monitoring center, and a communication line that is connected to the communication line and transmits test data to the monitoring center. In the remote monitoring device, the testing device includes a switching means for connecting the monitoring center to the terminal device or the testing device via the communication line. , a first monitoring circuit that monitors the use of the communication line by the terminal device, a second monitoring circuit that monitors a connection request from the terminal device to the communication line, and according to the implementation schedule of the operation test. test state means that operates to confirm the monitoring state of the first monitoring circuit, connect the test device and the monitoring center via the communication line, and set a test state by the switching means; , a voltage setting means that operates simultaneously with the test state setting means and sets a voltage condition on the terminal device equivalent to that when the communication line is connected; and a voltage setting means for transmitting the test data to the monitoring center via the communication line; an operation test means for testing the operation of the monitoring center; and when a connection request from the terminal device is detected by the second monitoring circuit during the operation test, the operation of the operation test means is stopped. , a control means for activating the switching means to connect the terminal device to the monitoring center via the communication line, and a display means for displaying a connection request from the terminal device when the control means is activated. A remote monitoring device characterized by: