JPH06165262A - Remote monitoring device - Google Patents

Abstract

PURPOSE:To shorten the occupying time of a channel, to enable high-speed transmission and to install and discriminate a lot of slave stations by automatically sending the small capacity of an abnormality data file from an equipment side personal computer(PC) to a reception side due to the generation of the abnormality of equipments. CONSTITUTION:A slave station PC 4 is provided with a monitoring software 9, a communication software 10 and an operation system (OS) 11. Then, the slave station fetches the sensor information of the equipment to be diagnosed, the monitoring software 9 is operated at normal time and when the abnormality is detected as the result of discriminating the presence of the abnormality of the equipments, the communication software 10 is started, the channel with a master station is connected and communication is started. In this case, the abnormal value data file of several tens K bytes is automatically transmitted. When the communication with the master station is completed, an completion processing is performed. Thus, when the monitoring software 9 on the side of the slave station discovers the abnormality of an important equipment, the small capacity of the abnormal value data file can be automatically transmitted to the side of the master station by connecting the channel and the line occupying time on the side of the master station can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for remotely monitoring and diagnosing important equipment such as power receiving and transforming equipment.

[0002]

2. Description of the Related Art In monitoring and diagnosing equipment in remote areas, a block shown in FIG.
That is, each of the equipment to be diagnosed among the equipment equipment in the remote place is provided with various sensors 1. The physical quantity by the sensor 1 is converted into an appropriate electric quantity by the amplifier 2, and then,
Programmable controller (hereinafter referred to as PRC)
It was converted into a transmission signal at 3 and sent to a personal computer (hereinafter referred to as PC) 4 via a transmission system such as RS-485. In this case, the transmission system such as RS-485 has a disadvantage that the maximum transmission distance is about 1 km.

Therefore, in order to further transmit to a remote place, after connecting the modem 5 to the RC 4 shown in FIG. 5 to form a voice signal, it is connected to the modem 7 at a remote place via the public line 6 such as NTT or Japan Telecom. A system for transmitting data to the stored PC 8 can be configured.

[0004]

However, there are the following problems in the above-mentioned data transmission at a remote place.

(1) In the method of polling the slave station from the master station when collecting the diagnostic data, the line occupation time of the master station is inevitably long, and thus the line usage fee is high.

(2) Further, in the usual method using the telephone line, the transmission speed is about 1200 to 2400 BPS and it takes a long time.

(3) Length of line occupation time of the above-mentioned master station,
Considering the line usage fee and the transmission speed, it becomes difficult to install a large number of slave stations, that is, a slave station having a master station: slave station = 1: N.

(4) When a plurality of slave stations are installed, the same data (file) is transmitted from different slave stations, and when the same data (file) is stored in the same directory, the data (file) may be confused. However, if the equipment diagnosis is executed by the mixed data (file), a misdiagnosis will occur.

That is, if the structure of the data (file) to be transmitted is not devised, the data (file) will be confused.

The present invention has been invented in view of the above-mentioned problems, and when data transmission between a master station and a plurality of slave stations between remote locations is performed, a small capacity of a unique subdivision from the slave station side occurs when an abnormality occurs. By automatically transmitting an abnormal value data file with a different name, the occupied time of the line is shortened, the line usage is small, and high-speed transmission is possible, and it is possible to set up and identify many slave stations. The purpose is to provide a highly reliable monitoring and diagnostic device.

[0011]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a sensor for detecting an abnormal state of equipment and a programmable sensor for converting a signal based on the sensor into a transmission signal.
A controller, a personal computer that performs diagnosis with this transmission signal, a modem that converts the signal of this personal computer into a voice signal, a public line that transmits the signal of the modem, and a modem that receives this voice signal, In a remote monitoring device consisting of a personal computer that monitors and diagnoses equipment by restoring the signal from this modem, a small capacity abnormal value data file is automatically generated from the equipment personal computer when an equipment error occurs. The gist is that a means for sending to the receiving side is provided.

[0012]

When an abnormality occurs, the equipment has an automatic start function, the batch processing of a personal computer is used to transmit an abnormal value data file using general-purpose communication means, and a modem of MNP class 5 or higher is used. Can store the identification code included in the abnormal value data file in the directory structure for each code on the receiving side.

[0013]

EXAMPLES Examples of the present invention will now be described with reference to FIGS. FIG. 1 shows the master station side and the slave station side, and since these configurations are the same, the slave station side will be described.

In the PC 4 of the slave station, the monitoring software 9,
Communication software 10 and operating system (OS)
11, a CRT 12, a printer (hereinafter referred to as PRN) 13, a hard disk (hereinafter referred to as HDD) 14, and a keyboard (hereinafter referred to as KB) 15 as input / output and storage devices.

The slave station PC4 and the master station PC8 are connected via public line modems 5 and 7 and a public line 6.

As the function of the slave station, as shown in FIG. 2, the sensor information of the device to be diagnosed is taken in, and the monitoring software 9 is always operating (step 16). If an abnormality is detected as a result of the determination, the communication software 10 is activated (step 18), the line with the master station is connected, and communication is started in step 19.
Here, an abnormal value data file of several tens of kilobytes is automatically transmitted. Communication with the master station ends (step 20)
Then, the ending process is performed and the process returns to step 16.

FIG. 3 shows the function of the master station, and the monitoring software 9 is always operating (step 21). In step 22, the received signal RI (CI) in the modem 7
When the signal is monitored and the reception is confirmed, the communication software 10 is activated (step 23), the line with the slave station is connected, and the communication is started (step 24). When the abnormal value data file transmitted from the slave station is received, the communication end processing is performed in step 25, and step 21
Return to.

In the transmission and reception of FIGS. 2 and 3, the modems 5 and 7 shown in FIG. 1 use MNP class 5 or higher having a data compression and error correction function, and the effective transmission rate is increased. There is. In particular, when the MNP class 10 is used, the effective transmission rate can be increased to 4800 BPS or more.

The file name of the abnormal value data file is embedded with a unique slave station code in the system. For example, the abnormal value data file name of the slave station code 001 is E.
It is indicated as RROR001, DAT.

FIG. 4 shows the internal structure of the HDD 14 of the master station 8. The HDD 14 as shown in FIG. 4 has a directory structure for each slave station code, and files transmitted from each slave station are stored in the HDD 14. Store in the corresponding directory
Saved.

With the configuration shown in FIGS. 1 to 4, when the slave station monitoring software 9 finds an abnormality in important equipment, a small-capacity abnormal value data file is automatically sent to the parent station by connecting the line. It is possible to transmit, the line occupancy time on the master station side can be shortened, and high-speed transmission is possible. Therefore, even if a large number of slave stations are connected, the chance of connection failure is reduced and the line usage time is shortened to reduce the line usage fee Can be lowered.

Further, by using a modem of MNP class 5 or higher, the effective transmission speed is improved and an error correction function is added to improve the transmission reliability.

By embedding the slave station code in the data file to be transmitted, the slave station in which an abnormality has occurred can be easily found by checking the data file name, and the file name becomes unique. Because there is no confusion of data. Further, since the HDD is a directory for each slave station code, the data file can be efficiently and safely stored.

Since the received signal can be recognized by monitoring the signal line of the modem from the monitoring software on the master station side,
General-purpose communication software can be used, standardization and modularization are possible, reliability is improved, and an inexpensive system is obtained.

[0025]

As described above, according to the present invention, it is possible to obtain a system that is high speed, can shorten the line occupation time, is inexpensive and has high reliability, and can connect to many facilities.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of the operation of a slave station.

FIG. 3 is an explanatory diagram of an operation of a master station.

FIG. 4 is an internal configuration diagram of an HDD of a master station.

FIG. 5 is a conventional system configuration diagram.

[Explanation of symbols]

 1 Sensor 2 AMP 3 PRC 4,8 PC 5,7 Modem 6 Public line 9 Monitoring software 10 Communication software 11 OS 12 CRT 13 PRN 14 HDD 15 KB

Claims (3)

[Claims] 1. A sensor for detecting an abnormal state of equipment, a programmable controller for converting a signal based on the sensor into a transmission signal, a personal computer for performing diagnosis with the transmission signal, and a signal for the personal computer. It is composed of a modem for converting the voice signal into a voice signal, a public line for transmitting the signal of the modem, a modem for receiving the voice signal, and a personal computer for restoring the signal by the modem to monitor and diagnose the equipment. In the remote monitoring device, the remote monitoring device is provided with means for automatically sending a small-capacity abnormal value data file from the personal computer of the equipment to the receiving side when an abnormality occurs in the equipment. 2. The remote monitoring device according to claim 1, wherein the modem used is MNP class 5 or higher. 3. The remote monitoring device according to claim 1, wherein an identification code of the facility is embedded in the abnormal value data file name, and a directory structure is provided for each identification code on the receiving side.