JP3148529B2 - Remote monitoring device - Google Patents

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 at 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 involves leak inspection every seven days based on security regulations.
It is implemented for the purpose of collecting pressure recording paper and the like, and therefore, a recorder for recording the primary pressure, the secondary pressure, and the governor opening is installed in the governor chamber containing the governor. The recorder records the measurement data on a recording sheet. The recorded data is collected, brought back, and processed collectively by a host computer or the like.

[0003] On the other hand, there is an attempt to remotely monitor governors installed at many places by a common center monitoring device. For example, as an attempt, a data collection device having communication means with the center monitoring device is installed in each governor, and monitoring measurement data of each governor collected by the data collection device is transmitted to the center monitoring device via a communication line. Then, there is a method in which data is collected and recorded, and an abnormality or the like is determined in the center monitoring device.

[0004]

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

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

[0006]

Means for Solving the Problems] To achieve this object, the present invention includes a field processing unit installed in each governor is installed at a main location, via a communication line with said plurality of field processing unit It consists of a common center monitoring devices connected to the above-mentioned field processing apparatus, and the monitoring data acquisition means for collecting information from the governor, and readings writing means of the data for the variable搬不volatile recording medium, the data and abnormality monitoring means, and a communication means with the center monitoring device, the abnormality monitoring unit, Tokoro the data and the friendly搬不volatile recording medium every appropriate time collected from the monitoring data acquisition means
It is characterized in that abnormality determining means for comparing with past similar data stored over time at regular time intervals to determine abnormality is configured.

[0007]

[0008]

[0009]

[0010]

The data from various monitoring devices at the data collection site are intermittently collected by the data collection unit of the on-site processing device, and are sequentially recorded on the portable non-volatile recording medium by the read / write unit.

The data is constantly monitored by abnormality monitoring means, and abnormality is determined by abnormality determination means. Then, when it is determined that there is an abnormality, the communication unit calls the center monitoring device and transmits the determination result of the abnormality 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, thereby reducing the system resources for this purpose and improving the skill. Swift response measures are possible without the need for

[0013] However also, if necessary in the center monitoring device, by issuing a request for transmission of data in variable搬不volatile recording medium to the communication means of the field processing unit that has Problem abnormal, stored in the variable搬不volatile recording medium The obtained data can be obtained, and this data can be efficiently used for analysis and determination of abnormality.

[0014] variable搬不volatile recording medium, for example by a long-term storable data I Wataru an IC memory card such as a year, it is possible to eliminate the need for replacement of the short-term and a predetermined time period After the passage, it can be collected from the on-site processing device and processed by a personal computer or the like. In addition, the data recorded on the portable non-volatile recording medium is stored before the predetermined period elapses.
If necessary, the data can be read and processed by a portable terminal device at the data collection site, or read and processed by the center monitoring device via the communication line as described above.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 schematically shows the overall configuration of the present invention.
Reference numerals 1 (1a, 1b,..., 1n) denote governor chambers installed at appropriate places in the city gas supply system. Various monitoring devices (not shown) such as primary and secondary side pressure sensors, flow meters, gas detectors, and other measuring devices, and governor cutoff sensors, SI sensors, and other abnormal detection devices.
Has been established, 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 denotes a common center monitoring device for monitoring the operation of the governor 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 applies a public line, a dedicated line, and a wireless line alone or in combination. 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 device 3 constituted by a microcomputer application device and the like. Reference numeral 6a connected to the on-site processing device 3 denotes an opening meter of the governor body 2, a governor. It shows a group of measuring devices such as a pressure sensor, a flow meter, and a gas detector on the primary side and the secondary side of the main body 2, and these are configured to output measurement data in an analog amount. Reference numeral 6b denotes a group of abnormality detection devices such as a governor cutoff sensor and an SI sensor, and these are contact outputs. In FIG. 2, of each component in the above, the data collection unit A, the abnormality monitoring unit B, the block group corresponding to the communication means C is shown enclosed by a one-dot chain line in FIG.

The on-site processing apparatus 3 includes the above-described measuring equipment group 6a
And input means 7a and 7b for connecting the abnormality detection device group 6b to the input device. That is, reference numeral 7a denotes measurement data input means, which comprises an analog pre-processing circuit, an A / D converter, a level converter, and the like, and has a function of converting analog data of each measurement device into a predetermined digital signal. It is configured so that Reference numeral 7b denotes an abnormality detection data input means, which comprises a level conversion circuit and 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 performing the subsequent processing. The data reading means 8 may be constituted by a function of controlling each of the data input means 7a and 7b and intermittently transferring data to a predetermined temporary storage area such as a RAM every time, for example, every 0.5 seconds. it can.

Among the data intermittently read by the data reading means 8, the data of the measuring equipment group 6a is compared with a set value, corrected, and other calculations are performed by the data processing means 9, and as a result an alarm is generated. Are performed.

That is, the governor body 2 from the measuring instrument group 6a
The 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 every 0.5 second sampling time, for example. The upper and lower limits are monitored by comparing the set upper and lower limits. At the same time, a predetermined calculation such as a calculation of a data difference between adjacent sampling points, a pressure correction of a flow rate, or a time-based weighted averaging process of the data is performed. Done. Note that the sampling time is set short so as to correspond to the maximum data change speed assumed when an abnormality occurs.

As a result of the comparison, if the data exceeds the upper and lower limits, the data processing means 9 issues an alarm output to the abnormality judging means 10 and, at the same time, makes the corresponding data along with the data before and after it as progress data. It is stored in the storage means 11. The progress data storage unit 11 is constituted by a nonvolatile storage unit such as an SRAM backed up by a battery.

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

Reference numeral 10 denotes the above-described abnormality determining means.
The abnormality judging means 10 judges an abnormality by monitoring an alarm from the data processing means 9 and an abnormality detection output from the abnormality detecting equipment group 6b obtained through the data reading means 8.
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 the abnormality handling process according to a predetermined procedure. The abnormality handling processing includes abnormality determination, abnormality importance classification processing, processing corresponding to abnormality importance, output to the communication management unit 14, and the like.

That is, when the data processing means 9 issues an alarm, the abnormality determining means 10
It is determined whether the abnormality is a process abnormality or a measurement device group 6a abnormality. At this time, the abnormality determination unit 10 accesses the portable non-volatile recording medium 13 via the recording medium read / write unit 12 as necessary, depending on the content of the abnormality, and stores the abnormal data in the portable non-volatile recording medium 13. The abnormality can be determined by comparing the data with the similar data in the past.
In addition, in the determination operation of such an abnormality, the elapsed data temporarily stored in the elapsed data storage unit 11 can be used in addition to the abnormal data itself.

The abnormality judging means 10 judges the occurrence of the abnormality as described above, and classifies the contents of the abnormality into, for example, four levels of importance such as the most important, important, little urgency, and no urgency. Then, these contents are output to the communication management means 14.

When the degree of importance of the abnormality is high, the communication management means 14 interrupts the other currently operating processes and performs an abnormality handling process as an interrupt process. In the case of, as the priority process, after the currently operating process ends, the abnormality handling process is performed prior to other processes. In the case of, as an ordinary process, an abnormality handling process is performed after the completion of another process prior to this.
In the case of (1), an insignificant abnormality that clearly indicates a failure of the device is performed. In this case, an abnormality handling process is performed as a process with a low priority.

Reference numeral 15 denotes communication control means managed by the communication management means 14, 15a denotes communication control means for dedicated / wireless lines, 15b denotes communication control means for public lines, and 15c denotes communication control means for serial communication. Communication control means 15
a is connected to the wireless communication device 17 via the dedicated / wireless line communication modem 16a, and the communication device control means 18;
The configuration is such that activation control of the wireless communication device 17 is performed via the control output unit 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.
A portable terminal device can be connected to 6c.

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

In the above configuration, when an abnormality to be reported to the center monitoring device 4 occurs in the equipment in the governor room 1, the communication management means 14 receives the judgment output from the abnormality judgment means 10 and selects the communication control means 15. The center monitoring device 4 is called.

For example, when the public line 20 is used as the communication line 5, the communication management means 14 selects the public line communication control means 15b and calls the center monitoring device 4 via the public communication modem 16b. Make 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 mutually confirm and establish a data link.
Then, the data of the content of the abnormality determined by the abnormality determining means 10 is transmitted.

In the center monitoring device 4, the monitoring means 21 displays the data of the content of the abnormality transmitted from the on-site processing apparatus 3 on the display means 22 and, if necessary, the alarm means 23.
Generates an alarm. As described above, the center monitoring device 4 can detect the occurrence of the abnormality and its content without processing the raw data of the equipment at the data collection site, and can take prompt action.

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 unit 21 of the center monitoring device 4 to the communication management unit 14 of the on-site processing device 3 by an input from the operation input unit 24 or the like. When sent,
The communication management means 14 transmits the data to the portable nonvolatile recording medium 1 via the recording medium read / write means 12 in accordance with the content of the data transmission request.
3 to read predetermined data and transmit it to the center monitoring device 4 side. In this way, the center monitoring device 4 can collect and analyze raw data of the equipment at each data collection site as needed. In addition, when the temporary storage unit 11 of the progress data is configured as described above, the data of the temporary storage unit 11 can 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, releases the line, and terminates the abnormality handling process.

The portable non-volatile recording medium 13 has, for example, a capacity capable of recording the above data for one year or more, and is collected from the on-site processing device 3 every year, and is taken back and analyzed by a personal computer or the like. Can be. 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 sending a data transmission request to the communication management means 14 via the, the data recorded on the portable nonvolatile recording medium 13 can be read out to the portable terminal device 28 for processing.

[0036]

As described above, the present invention has the following effects. Eliminating the collection operation every short period as in the on-site recording paper system is unnecessary. The data can be processed directly by computer without performing the necessary input work in the case of the on-site recording paper system. The processing load on the center monitoring device is small, and neither the hardware nor the software is enormous. Since the operation in the center monitoring device is simple, a skilled person is not required.

[Brief description of the drawings]

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

FIG. 2 is a block diagram illustrating an example of a basic configuration of a field 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 main body 3 field processing device 4 center monitoring device 5 communication line 6a measurement 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 communication control means 15b, 26b Public line Communication control means 15c serial communication communication control means 16a, 27a dedicated / wireless line communication modem 16b, 27b public communication modem 16c modemless serial interface 17 wireless communication device 18 communication device 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 (1)

(57) [Claims] A field processing unit installed in each governor 1. A are installed at a main portion, and composed of a common center monitoring apparatus connected via a communication line with said plurality of field processing unit, the field processing the device configuration and monitoring data acquisition means for collecting information from the governor, and readings writing means of the data for the variable搬不volatile recording medium, the abnormality monitoring means of the data, the communication means with the center monitoring device The abnormality monitoring means includes data collected at appropriate time intervals collected by the monitoring data collection means and past similarities stored over time at predetermined time intervals in the portable non-volatile recording medium. > A remote monitoring device characterized by comprising abnormality determining means for comparing data and determining an abnormality.