JPH0851678A - Remote monitor equipment - Google Patents

Abstract

PURPOSE:To enable a common center monitor equipment to remotely monitor many data gathering fields such as governors of a city gas supply system. CONSTITUTION:This remote monitor equipment consists of field processors 3 installed in plural data gathering fields and the common center monitor equipment 4 which is connected to the field processors through a communication line 5; and each field processor consists of a data gathering means for monitoring, a means for reading and writing data on and out of a portable nonvolatile recording medium, a means for monitoring abnormality of the data, and a communication means for a communication with the center monitor equipment, and an abnormality monitoring means has an abnormality deciding means which decides abnormality from gathered data. Consequently, (1) the need for collecting operation like a field recording paper system is eliminated. (2) The data can be processed directly by a computer without performing input operation unlike the field recording paper system. (3) The load of processing on the center monitor equipment is small and neither the hardware nor the software becomes large in scale. (4) The operation of the center monitor equipment is simple, so no skilled operator is required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote monitoring device for a data collection site such as a governor of a city gas supply system.

[0002]

2. Description of the Related Art The current patrol inspection work in a governor for supplying city gas is based on safety regulations, and a leak inspection is performed every 7 days.
This is done for the purpose of collecting pressure recording paper. For this reason, the governor chamber that houses the governor is equipped with a recorder that records the primary pressure, secondary pressure, and governor opening. The recorder records the measured data on a recording sheet, collects the recorded data, and brings it back to the host computer or the like for batch processing.

On the other hand, there has been an attempt to remotely monitor governors installed in a large number of places by using a common center monitoring device. For example, as an attempt to do so, a data collecting device equipped with a communication means with the center monitoring device is installed in each governor, and the monitoring measurement data of each governor collected by the data collecting device is transmitted to the center monitoring device through a communication line. Then, there is a method in which the center monitoring device collects the data and records the data and determines abnormality.

[0004]

In the former method, the governor cannot be monitored in real time, and the processing after data collection is very troublesome, so the above-mentioned inspection is essential.

Further, in the latter method, the amount of data collected by the center monitoring device becomes enormous, and the arithmetic processing such as abnormality determination becomes enormous, which is not practical in terms of both hardware and software. Therefore, the present invention aims to solve such a problem.

[0006]

In order to solve the above-mentioned problems, according to the present invention, an on-site processing device installed at each of a plurality of data collection sites and a common on-site processing device connected to a plurality of on-site processing devices via a communication line. The on-site processing device comprises a monitoring data collecting means, a data reading / writing means for a portable nonvolatile recording medium, a data abnormality monitoring means, and a communication means with the center monitoring device. Then, as the abnormality monitoring means, a remote monitoring device is proposed which comprises an abnormality determining means for determining an abnormality from the collected data.

Further, the present invention proposes that the communication means has a function of reading data from a portable non-volatile recording medium in the above structure.

The present invention proposes that the portable nonvolatile recording means in the above structure is an IC memory card.

Further, the present invention proposes to apply a governor as a data collection site in the above configuration.

[0010]

The data from various monitoring equipments at the data collecting site are constantly and intermittently collected by the data collecting means of the on-site processing apparatus, and are sequentially recorded in the portable non-volatile recording medium by the reading / writing means.

Further, the data is constantly monitored by the abnormality monitoring means, and the abnormality is judged by the abnormality judging means. When it is determined that there is an abnormality, the center monitoring device is called by the communication means, and the abnormality determination result is transmitted to the center monitoring device.

Therefore, the center monitoring device can detect the occurrence of an abnormality at each data collection site without collecting and processing the data by itself, and can reduce the system resources for this purpose, and the skill It enables quick response measures without the need for.

However, if necessary in the center monitoring device, the data is stored in the portable non-volatile recording means by issuing a data transmission request of the portable non-volatile recording means to the communication means of the on-site processing device which has reported the abnormality. The obtained data can be obtained, and this data can be efficiently used for analysis and judgment of abnormality.

When the portable non-volatile recording means is an IC memory card capable of accumulating data for a long period of time such as one year, it is possible to eliminate the need for short-term exchange and to pass a predetermined period. It can be collected later from the on-site processing device and processed by a personal computer or the like. In addition, the data recorded in the portable non-volatile recording means is
If necessary, it can be read and processed by a portable terminal device at the data collection site, or can be read and processed by the center monitoring device via the communication line as described above.

[0015]

EXAMPLE An example of the present invention will be described below with reference to FIGS. FIG. 1 schematically shows the overall configuration of the present invention.
Reference numerals 1 (1a, 1b, ..., 1n) are governor chambers installed at appropriate places in the city gas supply system. In these governor chambers 1, together with the governor main body 2, the position gauge of the governor main body 2 and the governor main body 2 are provided. Various devices for monitoring (primary side, secondary side pressure sensor, flow meter, gas detector, etc.), governor cutoff sensor, SI sensor, etc.
Has been installed and is a data collection site for governor monitoring. The on-site processing device 3 that collects and processes data from these various devices is installed outside the governor room 1.

Reference numeral 4 is a common center monitoring device for monitoring the operation of the governor main body 2 at a plurality of locations. The center monitoring device 4 and the on-site processing device 3 at each data collection site are connected via a communication line 5. Connected to form a remote monitoring device. The communication line 5 is a public line, a private line, or a wireless line applied individually or in combination, and the center monitoring device 4 and each on-site processing device 3 constitute communication means corresponding to these communication lines.

FIG. 2 is a block diagram showing an example of the construction of the on-site processing apparatus 3 which is constituted by a microcomputer application apparatus or the like, and the reference numeral 6a connected to the on-site processing apparatus 3 is an opening gauge of the governor main body 2 A measurement device group such as a pressure sensor, a flow meter, and a gas detector on the primary and secondary sides of the main body 2 is shown, and these are configured to output measurement data in an analog amount. Reference numeral 6b indicates a group of abnormality detecting devices such as a governor cutoff sensor and an SI sensor, which are contact outputs. In FIG. 2, a block group corresponding to the data collecting unit A, the abnormality monitoring unit B, and the communication unit C among the above-described constituent elements is shown by being surrounded by a chain double-dashed line in the drawing.

The on-site processing unit 3 includes the above measuring instrument group 6a.
And input means 7a and 7b for connecting the abnormality detection device group 6b. That is, reference numeral 7a is a measurement data input means, which is composed of an analog preprocessing circuit, an A / D converter, a level converter, etc., and has a function of converting the analog data of each measuring device into a predetermined digital signal. It is configured to let. Reference numeral 7b is an abnormality detection data input means, which is composed of a level conversion circuit or the like.

The data converted into a predetermined digital signal by each of the data input means 7a and 7b is temporarily read into an appropriate storage area by the data reading means 8 for the subsequent processing. The data reading means 8 may be configured by a function of controlling each of the data input means 7a and 7b to intermittently transfer data to a predetermined temporary storage area such as a RAM every time, for example, every 0.5 seconds. it can.

Of the data read intermittently by the data reading means 8, the data of the measuring instrument group 6a is compared with the set value by the data processing means 9, correction and other calculations are performed, and as a result, an alarm is generated. Etc. are processed.

That is, the governor body 2 from the measuring instrument group 6a
Data such as the primary side pressure, the secondary side pressure, the opening degree of the governor body 2, the flow rate, and the gas concentration are read by the data reading means 8 at every sampling time of, for example, 0.5 seconds, and the data processing means 9 preliminarily reads them. The upper and lower limits are monitored by comparing the respective set upper and lower limits. Along with this, predetermined calculations such as data difference calculation between adjacent sampling points, flow rate pressure correction, or time-dependent weighted average processing of data are performed, and these data are also compared with the upper and lower limit set values as appropriate. Done. It should be noted that the sampling time is set to be short so as to correspond to the maximum data change speed assumed when an abnormality occurs.

As a result of the above comparison, if the data exceeds the upper and lower limits, the data processing means 9 issues an alarm output to the abnormality determination means 10 and the corresponding data together with the data before and after the data is used as progress data. It is stored in the storage means 11. The progress data storage means 11 is composed of a non-volatile storage means such as a battery-backed SRAM.

Further, the data of the measuring device group 6a read by the data reading means 8 is recorded in the portable non-volatile recording medium 13 such as an IC memory card over time through the recording medium reading / writing means 12 at predetermined time intervals. The recording interval of the data to the portable nonvolatile recording medium 13 is the same as that of the portable nonvolatile recording medium 1.
Determined in consideration of the capacity of 3 and the continuous recording period of data,
In the embodiment, the time is longer than the sampling time, for example, every minute. The recording interval can be different for each data item. The type of data recorded in the portable nonvolatile recording medium 13 is the measurement device group 6a.
In addition to the raw data from, the data processing means 9 may record a part of the data obtained by the above-described calculation, and the data to be recorded is from the measuring device group 6a at the time of recording. In addition to data, a large number of data sampled during the recording interval may be statistically processed data.

Reference numeral 10 is the above-mentioned abnormality determining means,
The abnormality determination means 10 monitors the alarm from the data processing means 9 and the abnormality detection output from the abnormality detection device group 6b obtained via the data reading means 8 to determine the abnormality.
That is, when the data processing unit 9 issues an alarm or when the abnormality detection device group 6b issues an abnormality detection output, the abnormality determination unit 10 performs an abnormality handling process in a predetermined procedure. The abnormality handling processing includes abnormality determination, abnormality importance classification processing, processing corresponding to abnormality importance, output to the communication management means 14, and the like.

That is, when the data processing means 9 issues an alarm, the abnormality determining means 10 determines from the content of the abnormality data that
It is determined whether the abnormality is a process abnormality or the measurement device group 6a. At this time, the abnormality determination unit 10 accesses the portable nonvolatile recording medium 11 via the recording medium reading / writing unit 12 as necessary depending on the content of the abnormality, and records the abnormal data in the portable nonvolatile recording medium 13. It is possible to judge the abnormality by comparing it with the similar data in the past.
In addition to the abnormality data itself, the progress data temporarily stored in the progress data storage means 11 can be used for such abnormality determination operation.

The abnormality judging means 13 judges the occurrence of the abnormality as described above, and classifies the contents of the abnormality into four levels of importance, such as the most important, important, less urgent and less urgent. Then, these contents are output to the communication management means 14.

When the importance of the abnormality is, the communication managing means 14 interrupts other processing which is currently operating and performs the abnormality handling processing as the interrupt processing. In this case, as the priority processing, the abnormality handling processing is performed in preference to other processing after the processing currently in operation is completed. In this case, as the normal processing, the abnormality handling processing is performed after completion of other processing prior to this.
In the case of (3), it is a case of an unimportant abnormality that can be clearly recognized as a device failure, and in this case, the abnormality handling processing is performed as processing with low priority.

Reference numeral 15 is a communication control means managed by the communication management means 14, 15a is a dedicated / wireless line communication control means, 15b is a public line communication control means, and 15c is a serial communication communication control means. Communication control means 15
a is connected to the wireless communication device 17 via the dedicated / wireless communication modem 16a, and is connected to the communication device control means 18,
The activation control of the wireless communication device 17 is performed via the control output means 19. The communication control means 15b is connected to the public line 20 via the public communication modem 16b. The communication control means 15c is connected to the modemless serial interface 16c, and the transmission / reception means 1
A portable terminal device is connectable to 6c.

FIG. 3 is a block diagram showing the basic configuration of the center monitoring device. The center monitoring device 4 includes a communication means D corresponding to the communication means C of the on-site processing device 3, a monitoring means 21, and a display means 22. , Alarm means 23, and operation input means 24. As the communication means D, as in the case of the on-site processing apparatus 3, a dedicated / wireless line communication control means 26a corresponding to the wireless device 25, a dedicated / wireless line communication modem 27a, and a dedicated / wireless line corresponding to the public line 20. The communication control means 26b for public use and the public communication modem 27b are configured.

In the above configuration, when an abnormality occurs in the equipment of the governor room 1 that should be reported to the center monitoring device 4, the communication management means 14 receives the determination output from the abnormality determination means 13 and selects the communication control means 15. The center monitoring device 4 is called.

For example, when the public line 18 is used as the communication line 5, the communication management means 14 has the communication control means 15
b is selected and the center monitoring device 4 is called via the transmitting / receiving means 16b to establish a line connection. Next, the communication management means 14 of the on-site processing device 3 and the monitoring means 21 of the center monitoring device 4 perform mutual confirmation to establish a data link, and first, the on-site processing device 3 side to the center monitoring device 4 and then the abnormality determination means 10 The data of the abnormality content determined by is transmitted.

In the center monitoring device 4, the monitoring means 23 displays the data of the content of the abnormality transmitted from the on-site processing device 3 on the display means 22 and, if necessary, the alarm means 23.
Generates an alarm. In this way, the center monitoring device 4 can detect the occurrence of an abnormality and its content without processing the raw data of the equipment at the data collection site, and can respond promptly.

Further, the center monitoring device 4 can collect raw data of the equipment at each data collection site as needed. That is, when raw data is required in the center monitoring device 4, a data transmission request is sent from the monitoring means 21 of the center monitoring device 4 to the communication management means 14 of the on-site processing device 3 by inputting from the operation input means 24 or the like. When sent,
The communication management means 14 uses the recording medium reading / writing means 12 in accordance with the content of the data transmission request to make the portable nonvolatile recording medium 1
3 is accessed to read predetermined data, and this is transmitted to the center monitoring device 4 side. In this way, the center monitoring device 4 side can collect and analyze raw data of the equipment at each data collection site as needed. Further, when the temporary storage means 11 for the progress data is configured as described above, the data in the temporary storage means 11 can also be configured to be transmitted to the center monitoring device 4 as necessary. .

When the predetermined processing is completed as described above,
Either the center monitoring device 4 or the on-site processing device 3 terminates the data link, opens the line, and ends the abnormality handling processing.

The portable non-volatile recording medium 13 has, for example, a capacity capable of recording the above-mentioned data for one year or more, and the data is collected from the on-site processing device 3 every year, and brought back to analyze the data with a personal computer or the like. You can If necessary, the portable terminal device 28 is connected to the modemless serial interface 16c, and the communication control means 15c for serial communication is connected.
By transmitting a data transmission request to the communication management means 14 via the, the data recorded in the portable non-volatile recording medium 13 can be read out to the portable terminal device 28 and processed.

[0036]

As described above, the present invention has the following effects. There is no need for collection work every short period of time, such as on-site recording paper. The data can be directly processed by the computer without the input work required in the case of the field recording paper system. The processing load on the center monitoring device is small, and neither hardware nor software is enormous. Since the operation of the center monitoring device is simple, no expert is required.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing an overall configuration of the present invention.

FIG. 2 is a block diagram showing an example of the basic configuration of the on-site processing apparatus according to the present invention.

FIG. 3 is a block diagram showing an example of a basic configuration of a center monitoring device according to the present invention.

[Explanation of symbols]

A data collection means B abnormality monitoring means C communication means D communication means 1 governor room 2 governor body 3 on-site processing device 4 center monitoring device 5 communication line 6a measuring equipment group 6b abnormality detection equipment group 7a measurement data input means 7b abnormality detection data input Means 8 Data reading means 9 Data processing means 10 Abnormality judging means 11 Progress data storage means 12 Recording medium reading / writing means 13 Portable non-volatile recording medium 14 Communication management means 15a, 26a Dedicated / wireless line communication control means 15b, 26b Public line Communication control means 15c serial communication communication control means 16a, 27a dedicated / wireless line communication modems 16b, 27b public communication modem 16c modemless serial interface 17 wireless communication equipment 18 communication equipment control means 19 control output means 20 public line 21 Monitoring means 22 Display means 23 alarm means 24 operational input means 25 wireless device 28 Allowed 搬端 end devices

Claims (4)

[Claims] 1. A site processing device installed at each of a plurality of data collection sites, and a common center monitoring device connected to the plurality of site processing devices via a communication line. The data collecting means, the data reading / writing means for the portable non-volatile recording medium, the data abnormality monitoring means, and the communication means with the center monitoring device are configured, and the abnormality monitoring means determines an abnormality from the collected data. Remote monitoring device characterized by comprising an abnormality determination means for 2. The communication means has a function of reading data from a portable non-volatile recording medium.
Described remote monitoring device 3. The remote monitoring device according to claim 1, wherein the portable nonvolatile recording means is an IC memory card. 4. The remote monitoring device according to claim 1, wherein the data collection site is a governor room.