JPH05122773A - Remote monitoring system - Google Patents

Abstract

PURPOSE:To inform a monitor of an abnormality through radio and to obtain process information by accessing a central processing unit. CONSTITUTION:A process state monitoring part 22 orders an automatic dial function part 25 to provide an automatic dial at the generation of abnormality by calling up the number of a central station 90 registered in a telephone number table 24 for radio personal calling service. By the command of the function part 25, the automatic dialing to the station 90 is performed through a data transfer part 26 and a modem 40. A receiver 80 generates an alarm sound when receiving a call signal through which a monitor knows the occurrence of abnormality. The monitor accesses a modem 50 of a monitoring device 70 to a central monitoring unit 20 through a public line 60. The data transfer part 26 transfers storage abnormality information through a line 60 to the accessed device 50. The monitor sends the required command through the devices 40 and 50 to the device 20 by the display of the abnormality information of the device 70. By the command of the device 70, the necessary processing for the prevention of and the recovery from abnormality can be performed on a monitoring object process 10.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to remote monitoring systems.

[0002]

2. Description of the Related Art Conventionally, as a remote monitoring system for monitoring the operating state of equipment such as water and sewage equipment, building equipment, factory equipment, production plants, etc.
There is known a configuration shown in FIG. 3 in which an operating state of equipment such as a pump and a motor of a process to be controlled and monitored is displayed and monitored on a CRT display device.

In this conventional remote monitoring system, the monitored process 10 has various devices and sensors, and the central monitoring device 20 composed of a computer collects the information of the monitored process 10 every moment. When an abnormality occurs, the state is displayed on the CRT display device 30 to notify an observer of the abnormal state.

The conventional remote monitoring system will be described in more detail. The central monitoring device 20 includes a CRT screen display control unit 21 and a process state monitoring unit 22, and the process state monitoring unit 22 monitors the monitored process 10. When the information is collected and an abnormality occurs, the abnormality is displayed on the CRT screen display control unit 21 to notify an observer of the occurrence of the abnormality. Upon receiving the notification of this abnormality, CR
The T display device 30 displays information about the abnormality of the corresponding device, and the observing staff can see the display and take quick action against the abnormality.

[0005]

However, in such a conventional remote monitoring system, the information at the time of an abnormality is only displayed on the CRT display device 30 placed in the central monitoring room, which is important. Since there is a need for prompt response when monitoring the process, there is no choice but to keep an observer in the central monitoring room 24 hours a day, and when an abnormality occurs, the observer stays in the central monitoring room. If not, I had to go to see the CRT display in the central monitoring room,
There was a problem that required a lot of labor.

It is also possible to connect a remote console to a central monitoring device serving as a host computer via a LAN and monitor the state of the process to be monitored via this remote console. It is possible to connect and access only in the area where the network is set up, and it is not possible for any observer to access from a remote place or a remote place such as a water source via a public line. , It was not possible to freely monitor anomalies from a remote location.

The present invention has been made in view of such conventional problems, and not only the monitoring in the central monitoring room but also the real-time notification of abnormality even when the monitoring staff is not in the central monitoring room. In addition, you can check the details of the notification without returning to the monitoring room, and you can quickly confirm the abnormal status of the process at a place away from the central monitoring room. It is an object of the present invention to provide a remote monitoring system that can reduce labor load.

[0008]

A remote monitoring system of the present invention collects various information of equipment in a process to be monitored and controlled to monitor an operating state, and when an abnormality occurs,
A central monitoring device for displaying on a display device installed in a monitoring room, which is related to an abnormal condition when it is accessed via a public line and an abnormal notification means for notifying an abnormal condition using a wireless individual calling service. A data transmission unit for sending data to the access source via the public line, a wireless receiving device for making an abnormality notification in response to a calling signal from the abnormality notifying unit, and a public line connected to the public line. Access the central monitoring device through a line, receive the transmitted data regarding the abnormal state,
A modulation / demodulation device for sending input data to the data transmission section through a public line, a data transmission means for processing input data from the modulation / demodulation device and output data to the modulation / demodulation device, and display means for displaying reception data of the data transmission means. And a input means for inputting a necessary operation command and transmitting it to the central monitoring device through the public line via the data transmitting means and the modulation / demodulation device.

[0009]

In the remote monitoring system of the present invention, when an abnormality occurs in the process to be monitored, the central monitoring unit causes the display unit to display the abnormality of the process and informs the monitoring staff in the monitoring room.

Further, if there is an observer distant from the central monitoring room, the abnormality notifying means for notifying the abnormality using the wireless individual calling service wirelessly calls the wireless receiving device of the observer to give an abnormality. Make a notification.

Recognizing this, if the supervisor wants to know the state of the process from his / her location, if the modem of the portable monitor is connected to the public line and the central monitor is accessed, The process status information is transmitted from the data transmission unit provided in the monitoring device to the portable monitoring device through the public line and displayed by the display means.

Therefore, the observer checks the display of the display means of the portable monitoring device for the presence or absence of an abnormality, and when the abnormality occurs, confirms the state thereof, and if any operation is required, a necessary command is issued from the input means. Can be input and transmitted to the central monitoring device side, and necessary measures can be taken to restore the process.

Thus, even if the supervisor is away from the central monitoring room, if an abnormality occurs in the process, the supervisor is notified wirelessly of the abnormality and the supervisor accesses the central monitoring room through a public line. It will be possible to check the abnormal situation, and reduce the labor and mental burden that the central monitoring room must be packed by the monitoring staff all the time, 24 hours a day.

[0014]

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

FIG. 1 is a functional block diagram of an embodiment of the present invention, and FIG. 2 is a functional block diagram of a detailed internal structure of a portable monitoring device. The remote monitoring system of this embodiment is a variety of monitored processes 10. The device status information and the sensor signal are connected so as to be transmitted to the central monitoring device 20, and necessary process information is displayed on the CRT display device 30.

The central monitoring device 20 is a CRT.
A CRT screen display control unit 21 that controls the display of the display device 30, a process state monitoring unit 22 that performs arithmetic processing of process information from the monitored process 10 and determines whether there is an abnormality, and a memory that stores necessary information and programs. 23, a telephone number table 24 in which telephone numbers of calling stations are stored in order to use a radio call service (usually, an existing one called a pager is used) when an abnormality occurs, an abnormality notification when an abnormality occurs An automatic dial function unit 25 for calling the central office to perform the process and a data transmission unit 26 for transmitting the process state data to the outside are provided.

The central monitoring device 20 includes a modulation / demodulation device 4
A portable monitoring device 70 is connected via 0, 50 and a public line 60 such as a telephone line.

The portable monitoring device 70 is composed of a handheld terminal and a display / keyboard-integrated personal computer, such as a book-type personal computer or a notebook-type personal computer, which has a built-in radio receiver 80. As shown in FIG. 2, the data transmission unit 71 that receives a signal from the modulation / demodulation device 50 and sends the signal to the modulation / demodulation device 50 processes the process information received by the data transmission unit 71. A process state monitoring unit 72 that outputs a command to display the abnormal state information, a display control unit 73 that performs display control, a liquid crystal display unit 74 that displays information controlled by the display control unit 73, and a necessary command. An input unit 75 for inputting, and a memory 76 for storing various data and programs It is provided.

The radio receiving device 80 has a so-called pager function, and has a function of emitting a call notification sound by a built-in speaker when a call signal of its own is received wirelessly as described later. This wireless receiver 80
In addition to the call notification, the function of displaying simple information transmitted together with the call signal on the display unit 74 in cooperation with the display control unit 73 can be added.

In order to use the wireless individual calling service, the central monitoring device 20 has a central base station 90 and a public line 60.
When an abnormality occurs, the automatic dial function unit 25 connects the data transmission unit 23 to the modulation / demodulation device 40 and the public line 6
A call command is transmitted to the central base 90 via 0. Further, the central station 90 is connected to the peripheral base stations 100, and each peripheral base station 100 is provided with a wireless transmission device 110, and when receiving a calling command, a signal for calling the corresponding wireless reception device 80 is transmitted in the air as a radio wave. It is designed to be sent out.

Next, the operation of the remote monitoring system having the above configuration will be described.

The process status monitoring unit 2 of the central monitoring device 20
In 2, the information on the equipment in the monitored process 10 is collected, arithmetically processed, and the necessary information is displayed on the CRT display device 30 via the CRT screen display control unit 21.

When an abnormality occurs, the process state monitoring unit 22 calls the auto dial function unit 25 with the telephone number of the central office 90 registered in the telephone number table 23 of the wireless individual calling service to perform auto dialing. Then, in response to the command from the auto-dial function unit 25, the data transmission unit 26 and the modem 40 are used to auto-dial to the central office 90.

Therefore, on the wireless individual calling service side, the central station 90 notifies the peripheral base station 100, and the wireless transmitting device 110 calls the wireless receiving device 80 of the corresponding portable monitoring device 70.

When the receiving device 80 receives the calling signal for its own device, the built-in speaker generates an alarm sound. Therefore, the observer who hears this alarm sound can know that some abnormality has occurred in the process to be monitored.

Therefore, the observer who receives the call for the abnormal occurrence of the process by the radio call service connects his / her modem or demodulator 50 of the portable monitor 70 to the public line 60 at his / her own house or another place, The central monitoring device 20 is accessed like normal computer communication.

When the data transmission unit 26 of the central monitoring device 20 accepts this access, the stored abnormality-related information is sent to the public line 60 via the modulation / demodulation device 40, and the portable monitoring device 70 that has accessed. It is transmitted to the modulation / demodulation device 50.

In the portable monitoring device 70, the modulation / demodulation device 50 is used.
The data transmission unit 71 converts the received information and the process state monitoring unit 72 performs arithmetic processing to display necessary abnormality related information on the display unit 74 under the display control of the display control unit 73.

The observer sees the display of the abnormality information on the display unit 74, inputs the command necessary for the abnormality recovery from the input unit 75, converts the command by the data transmission unit 71, and the modulator / demodulator 40, It transmits to the central monitoring apparatus 20 side via 50 and the public line 60.

On the side of the central monitoring device 20, the data transmission unit 2
6 receives a command from the portable monitoring device 70, performs arithmetic processing by the process state monitoring unit 22, and transmits it to the corresponding process of the monitored process 10 via the process state monitoring unit 22 to avoid an abnormality or recover from an abnormality. Perform the necessary processing for.

In this way, the process is monitored mainly by the central monitoring device 20 placed in the central monitoring room, and measures are taken when an abnormality occurs, but the monitoring staff is away from the monitoring room. Even in this case, by using a wireless calling service to call an observer at a remote location to notify the occurrence of an abnormality, by accessing the central monitoring room from a portable monitoring device carried by the observer via a public line, Understand abnormal information, take necessary measures, and freely monitor the process from a remote place such as home or wherever there is a public line such as a telephone line. So that they can do it.

[0032]

As described above, according to the present invention, together with the central monitoring device installed in the central monitoring room, when an abnormality occurs, the wireless monitoring service is used to call the portable monitoring device at a remote location, and the portable monitoring device is called. The monitoring staff carrying the monitoring equipment receives this call and uses the public line to access the central monitoring equipment to transmit information when the process is abnormal. If not, connect a portable monitoring device to the public line when receiving a call due to an abnormality, and monitor the process status externally by receiving data transmission,
You can perform the required operations. Therefore, it is possible to confirm the process abnormality even if the monitoring staff is not always in the monitoring room for monitoring the important process, and it is possible to reduce the labor burden and the mental burden.

Further, in the case of the present invention, even if the portable monitoring device is not always connected to the public line, the abnormal information can be grasped by connecting the portable monitoring device to the public line after receiving a radio call. Therefore, even if there is only one public line in the distant work site and its surroundings, and it is necessary to keep the line open for communication as much as possible, the public line is available only when necessary. Since it is sufficient to use the line, the use efficiency of the line is not deteriorated.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a functional block diagram of the portable monitoring device in the above embodiment.

FIG. 3 is a functional block diagram of a conventional example.

[Explanation of symbols]

 10 monitored process 20 central monitoring device 21 CRT screen display control unit 22 process state monitoring unit 23 memory 24 telephone number table 25 auto dial function unit 26 data transmission unit 30 CRT display device 40 modem unit 50 modem unit 60 public line 70 portable type Monitoring device 71 Data transmission unit 72 Process state monitoring unit 73 Display control unit 74 Display unit 75 Input unit 76 Memory 80 Wireless receiving device 90 Central station 100 Peripheral base station 110 Wireless transmitting device

Claims (1)

[Claims] 1. A central monitoring device that collects various kinds of information on equipment and devices in a process to be monitored and controlled to monitor the operating state, and when an abnormality occurs, displays it on a display device installed in a monitoring room. And an abnormality notifying means for notifying an abnormality using the wireless individual calling service, and a data transmission section for sending data relating to the abnormal state to the access source via the public line when accessed via the public line. And a wireless receiving device that notifies the occurrence of an abnormality in response to a call signal from the abnormality notifying unit, and an abnormal state that is transmitted by connecting to the public line and accessing the central monitoring device through the public line. A data demodulation device that receives data regarding the data and sends the input data to the data transmission unit through a public line, and the input data from the data modulation and demodulation device and the modulation and demodulation device. Data transmission means for processing output data to the data transmission means, display means for displaying the received data of the data transmission means, and a necessary operation command input, and the central monitoring through the public line via the data transmission means and the modulator / demodulator. A remote monitoring system comprising a portable monitoring device having an input means for transmitting to the device.