JPH0564840B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention connects the building to be monitored and an external information center through a general subscriber telephone line, and centrally monitors abnormalities in building equipment such as elevators from a remote location. The present invention relates to improvements to remote monitoring systems.

[Conventional technology]

First, a conventional remote monitoring system will be explained with reference to FIG.

Figure 3 is an overall configuration diagram of a conventional remote monitoring system. In the figure, 1 is the building to be monitored, 2 is equipment such as elevators, escalators, multi-story parking lots, air conditioning equipment, water supply and drainage equipment, etc., and 4 is the equipment installed in the equipment. a building transmitter, 6, which automatically makes a call when an abnormality detection signal 3 is input from an abnormality detector (not shown), and transmits the information to the outside using a general subscriber telephone line 5;
receives information from the building transmitter 3 and sends the equipment 2
This is an information center that remotely monitors the status of

By connecting a large number of buildings to an information center in this configuration, multiple buildings in a certain area can be centrally monitored by the information center, making it possible to quickly respond when an abnormality occurs. .

By the way, the equipment in each building needs to be maintained and inspected periodically or when an abnormality occurs, but in that case, the maintenance and inspection work returns the equipment to the same state as when the abnormality occurred, and erroneous information is transmitted to the information center. There is a risk that it may be transmitted. To prevent this, conventionally a switch for maintenance and inspection is attached to the building transmitter or equipment to be maintained, and this switch is operated during maintenance and inspection, and while this switch is on, the signal of the equipment to be maintained is always normal. Configure the circuit so that

Even if the abnormality detector is activated due to a change in the signal of the equipment to be maintained, the abnormality detection signal is prohibited from being transmitted to the information center.

Such processing was being carried out.

[Problem that the invention seeks to solve]

If you use the above method during maintenance and inspection of equipment, you will be able to carry out maintenance and inspection while an abnormality occurs and turn the maintenance switch.
If you turn it on, the information center will be notified that it has returned to normal, making it impossible for the information center to make accurate decisions.

Also, when using the above method, there is no problem if there is only one equipment to be monitored in the building, but if multiple equipment needs to be monitored, it is better to use only one maintenance switch for all equipment. Even if an abnormality occurs in another device during maintenance and inspection of one device, it is not reported to the information center, which may delay the detection of the abnormality and cause a serious accident. In order to prevent this, it is possible to install a maintenance switch for each device and connect each device to the building transmitter separately, but if you try to transmit the maintenance signal at the same time, the building signal will be transmitted depending on the number of devices. Problems arise as the number of input points for a machine increases, and as a result, circuits and programs become more complex.

[Means for solving problems]

The present invention has been made to solve the above problems, and each piece of equipment is provided with a maintenance switch that disables abnormality detection of the equipment and sends a maintenance signal during maintenance inspection. The respective maintenance signals from the maintenance switches are commonly input to the input point of the building transmitter, and each of the abnormality detection signal and maintenance signal is transmitted to the information center, and the information center receives the information when the abnormality is detected. The apparatus is equipped with a display means for distinguishing and displaying cases where the equipment is being maintained and inspected and cases where an abnormality has occurred in other equipment during the maintenance and inspection.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a diagram showing the circuit configuration of the main parts of the remote monitoring system according to the present invention, and in the figure, 2A and 2B
is the facility equipment to be monitored, MSA and MSB are maintenance switches for maintenance and inspection provided on each equipment, RA and RB are maintenance detection relays, RA ₁ ~
RA ₃ and RB ₁ ~ RB ₃ are their normally open contacts, LSA ₁
and LSB ₁ are normally closed contacts of an abnormality detector (for example, a limit switch) that detects the first abnormal state of devices 2A and 2B, respectively, and LSA ₂ and LSB ₂ detect the second abnormal state of devices 2A and 2B, respectively. PA and PB are the control power supplies, I ₁ to I ₃ are the input points of the building transmitter 4, I ₁ is for the first abnormal state detection signal input, I ₂ is the second I3 is for inputting a detection signal of an abnormal state, and _I3 is for inputting a maintenance signal. Note that the same or equivalent parts as in FIG. 3 are indicated by the same reference numerals.

As is clear from the above configuration, the contacts LSA ₁ and LSB ₁ of the abnormality detector are connected in series, and the abnormality detection signal is input to the common input point I ₁ , and the
When the first abnormal state is detected in either A or 2B, contact LSA ₁ or LSB ₁ opens, and input point I ₁
The input signal of the input signal is changed.

Similarly, contacts LSA ₂ and LSB ₂ are connected to a common input point I ₂ , and when a second abnormal state is detected in either device 2A or 2B, the input signal at input point I ₂ changes. .

The normally open contacts RA ₃ and RB ₃ of the maintenance detection relay are also connected to the common input point I ₃ , and the maintenance switch
When either MSA or MSB is operated, contact RA ₃ or RB ₃ is closed, and the input signal at input point I ₃ changes.

Here, in order to further reduce the number of input points for the building transmitter, the structure is configured such that abnormality detection with the same content is input in common to the building transmitter, but in order to distinguish which equipment has an abnormality,
It may also be connected to the building transmitter separately.
At this time as well, maintenance switches are provided for each piece of equipment, and the maintenance signal is commonly input to the building transmitter.

Next, the operation will be explained.

First, consider a case where equipment 2A is maintained in a state where no abnormality has occurred in either equipment 2A or 2B. When maintenance switch MSA is turned on for maintenance inspection, maintenance relay RA is energized and contacts RA ₁ and
Due to the closure of RA ₂ , the abnormality detector of device 2A becomes invalid. On the other hand, a maintenance signal is input to the input point I ₃ by closing the contact RA ₃ , and the building transmitter 4 notifies the information center that maintenance is in progress. At this time, if the first abnormal state occurs in the device 2B, the contact LSB ₁ opens, and the abnormality detection signal, that is, the input signal to the input point I ₁ changes,
The building transmitter 4 notifies the information center that an abnormality has occurred. Therefore, the information center can know that the first abnormality has occurred in a device other than the device under maintenance. The same applies when a second abnormal condition occurs in the device 2B and the contact LSB ₂ is opened during maintenance of the device 2A.

Thereafter, when the maintenance of the device 2A is completed, the maintenance switch MSA is turned off, the contact RA ₃ is opened, and the information center is notified of the completion of the maintenance.

Next, the first abnormality occurs in device 2A and the contact
Consider a case where LSA ₁ is opened and the occurrence of the first abnormality is reported to the information center. At this time, in order to maintain equipment 2A, turn on the maintenance switch MSA.
When it is turned on, maintenance relay RA is energized and contact RA ₁
When the contact LSA ₁ for abnormality detection is opened, contact RA ₃ is also closed, and the information center is notified that the first abnormality has returned to normal and that maintenance has begun. This indicates that the information center has started maintenance regarding the first abnormality.

After that, the first abnormal condition is restored to normal and the contact
When the maintenance switch MSA is turned off after LSA ₁ is closed, the information center is notified that maintenance has been completed, and no abnormality is reported, so the information center knows that the first abnormality has indeed been restored.

Note that as a method of displaying the contents of the report from the building transmitter in the information center, the abnormality detection signal and the maintenance signal may be displayed separately, but the display as shown in FIG. 2 may also be used.

Figure 2 is a diagram showing the relationship between each signal and display color, where (a) is an abnormality detection signal, (b) is a maintenance signal, and (c) is, for example
This shows an example of the display color displayed on a CRT screen, etc. When normal, the screen displays green, and when an error occurs, it displays red. When a maintenance switch is turned on, the error detection signal of the corresponding device is abnormal. When the status returns to normal, the display will turn yellow. If you do this, when an abnormality occurs and you need to perform a maintenance check, you can turn on the maintenance switch for that equipment.
When you do this, the display changes from red to yellow, letting you know that maintenance and inspection work is about to begin for that abnormality (if you turn on the maintenance switch of another normal device, it will not turn yellow and will remain red). When the normal state is restored and the maintenance switch is turned off, the screen changes from yellow to green, indicating that the normal state has indeed been restored.

Additionally, if an abnormality occurs in another device while the screen display is yellow, an abnormality signal is transmitted as described above, and the screen display changes from yellow to red to indicate that a new abnormality has occurred. I understand.

In addition, in the above explanation, for convenience, the case where two equipments to be monitored are connected to one building transmitter has been explained, but of course, the same applies even when there are three or more equipments, and the present invention can be applied. It goes without saying that it can be done.

〔Effect of the invention〕

When there are many pieces of equipment to be monitored in one building and they are connected to one building transmitter, each piece of equipment is equipped with a maintenance switch. Even if an abnormality occurs in other equipment, it can be reported to an external information center.

In addition, by transmitting the maintenance signal to the information center as a common signal for each device, the number of input points of the building transmitter can be minimized, and the signal of the equipment that was abnormal can be changed to a normal signal due to maintenance. At the information center, you can determine whether the equipment itself has actually recovered.

[Brief explanation of the drawing]

FIG. 1 is a circuit configuration diagram of the main parts of a remote monitoring system according to the present invention, FIG. 2 is a diagram showing the relationship between each signal and display color, and FIG. 3 is an overall configuration diagram of a conventional remote monitoring system. 1... Building to be monitored, 2, 2A, 2B... Equipment, 3... Abnormality detection signal, 4... Building transmitter,
5...General subscriber telephone line, 6...Information center,
MSA, MSB...Maintenance switch, LSA ₁ , LSA ₂ ,
LSB ₁ , LSB ₂ ... Normally closed contact of abnormality detector, I ₁ , I ₂ ,
I ₃ ...Input point.

Claims (1)

[Scope of Claims] 1. An abnormality detector for detecting an abnormality is provided in each of a plurality of equipment in a building to be monitored, and an abnormality detection signal from the abnormality detector is automatically transmitted, and the information is sent to a general subscriber telephone. In a remote monitoring system equipped with a building transmitter that transmits data to an external information center using a line, each of the equipment is provided with a maintenance switch that disables the abnormality detector and sends a maintenance signal during maintenance inspection, Each of the maintenance signals from each of the maintenance switches is configured to be commonly input to the input point of the building transmitter, and each of the abnormality detection signal and the maintenance signal is transmitted to an information center. A remote monitoring system comprising a display means for distinguishing and displaying a case where a device in which an abnormality has been detected is under maintenance inspection and a case where an abnormality has occurred in another device during maintenance and inspection.