JP3279874B2 - 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, and more particularly to detection of hunting abnormality such as pressure.
The present invention relates to a remote monitoring device having an alarm function and the like.

[0002]

2. Description of the Related Art The current patrol inspection work in a governor for supplying city gas is carried out once a week based on security regulations for the purpose of leak inspection, replacement and collection of recording paper such as pressure, etc. For this reason, 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 measured data on a round chart (one week recording paper). The round chart on which the data was recorded is collected, brought back and checked by each person to check for pressure hunting abnormalities, etc. ing.

[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 sequentially collected in the center monitoring device to record and determine an abnormality or the like.

[0004]

The former method has the following problems. Abnormalities such as pressure hunting can be grasped only at weekly patrols or by notification. Weekly patrol inspection costs are increasing. It is necessary to inspect the collected round charts one by one to check for abnormalities such as pressure hunting. When trying to judge anomalies by computer processing the collected round chart data, it is difficult to input because there is a lot of necessary data, and the characteristics of each governor must be converted into data in advance. It is.

In the latter method, the amount of data collected by the center monitoring device becomes enormous, and as described above,
In order to judge abnormalities, the characteristics of each governor must be converted into data and stored in advance, and the amount of arithmetic processing becomes enormous, requiring a large-scale system in both hardware and software. Is high and impractical. Accordingly, an object of the present invention is to solve such a problem.

[0006]

In order to solve the above-mentioned problems, the present invention provides an on-site processing device installed at a data collection site and a common center monitoring device connected to a number of on-site processing devices via a communication line. The on-site processing device includes a monitoring data collection unit that collects monitoring data in a high-speed memory, a data reading / writing unit for a non-volatile recording medium, a data abnormality monitoring unit, and a communication line. The communication means is constituted, and the abnormality monitoring means is provided with a function for judging an abnormality by comparing a change in data fetched into the memory at a high speed with a set value. Measurement data provided in the abnormality monitoring means
The present invention proposes a remote monitoring apparatus which is configured to record the data in a non-volatile progress data storage unit, and that a set value for determining an abnormality in data fluctuation in the abnormality monitoring unit is a deviation, an amplitude, a cycle, and the number of repetitions.

According to the present invention, a field processing device installed at a data collection site and a common center monitoring device connected to a number of field processing devices via a communication line are provided. A monitoring data collection unit for collecting data in a memory at high speed, a data reading / writing unit for a non-volatile recording medium, a data abnormality monitoring unit, and a communication unit via a communication line are configured. A function to determine the abnormality by comparing the fluctuation of the data stored in the memory with the set value, and when the abnormality is determined, the measurement data for a predetermined time before and after the abnormality is monitored.
The configuration is such that the data is recorded in a non-volatile historical data storage means provided in the column, and the non-volatile recording medium is configured to record sequential measurement data at intervals of a time longer than the time interval collected in the memory at high speed. A remote monitoring device is proposed.

According to the present invention, a field processing device installed at a data collection site and a common center monitoring device connected to a number of field processing devices via a communication line are provided. A monitoring data collection unit for collecting data in a memory at high speed, a data reading / writing unit for a non-volatile recording medium, a data abnormality monitoring unit, and a communication unit via a communication line are configured. A function to determine the abnormality by comparing the fluctuation of the data stored in the memory with the set value, and when the abnormality is determined, the measurement data for a predetermined time before and after the abnormality is monitored.
The nonvolatile recording medium has a recording capacity for recording sequential data and past actual data for a predetermined period of time, and is used for recording new data sequentially. The present invention proposes a remote monitoring device configured to always retain data from a present time to a predetermined period before by erasing oldest data.

According to the present invention, any of the above structures
In the non-volatile recording medium, the setting for abnormality determination
Record statistics of measured data related to values as actual data
It is proposed to adopt a configuration in which:

Further, in the present invention, any one of the above-described configurations is used.
And the set value for abnormality determination in the abnormality monitoring means
Proposes a configuration that can be changed via communication means.
You.

According to the present invention, any one of the above structures is provided.
, The non-volatile recording medium is an IC memory card or the like.
Use a portable recording medium and collect data
It is suggested to apply governor as a site.

[0012]

The data from the various monitoring devices at the data collection site is intermittently collected at high speed by the data collection means of the on-site processing device, and is taken into the memory. The successive data is constantly monitored by abnormality monitoring means, and abnormality is determined by abnormality determination means. As one of the abnormalities, the hunting abnormalities indicate the fluctuation of the measured data,
The determination is made by comparing with the set values regarding the deviation, the amplitude, the cycle, and the number of repetitions. In other words, if the fluctuation of the measurement data exceeds the deviation range, the amplitude exceeds the set value of the fluctuation range, and if the fluctuation is repeated more than the set number of times within the set value of the fluctuation period, the occurrence of the hunting abnormality will occur. judge.

When it is determined that the hunting is abnormal, the measurement data for a predetermined time before and after the hunting is recorded on the non-volatile recording medium. When the occurrence of a hunting abnormality is determined based on the measurement data, the abnormality monitoring unit compares the abnormality data with past measurement data recorded on a non-volatile recording medium to determine whether to issue an alarm. That is, the data for which an alarm was issued due to a past hunting abnormality and the current data are compared, and if there is similarity, or if the current fluctuation range is larger, it is determined that an alarm is necessary.

When it is determined that an alarm is required, the abnormality monitoring means calls the center monitoring device by the communication means and transmits the result of the abnormality determination to the center monitoring device.

In this way, the center monitoring device can detect the occurrence of a hunting abnormality at each data collection site without collecting and processing the data of the measuring equipment and the like by itself.
The system resources for this purpose can be reduced, and prompt measures can be taken without requiring skill.
Also, if necessary in the center monitoring device, the data recorded on the non-volatile recording medium can be obtained by issuing a transmission request for the data of the non-volatile recording medium to the communication means of the local processing device that has reported the abnormality, This data can be efficiently used for analysis and determination of abnormality.

There is a case where some hunting can be tolerated, that is, a small hunting that causes no problem occurs. Even in the case of such a hunting, if it is determined based on the set values described above, an unnecessary alarm is often generated. The inconvenience that occurs and vice versa also occur. In this case, the center monitoring device can cope with the situation by changing the setting value for abnormality determination in the abnormality monitoring means via the communication line as needed.

As described above, in the non-volatile recording medium,
At the point of time when it is determined to be abnormal, the measurement data for a predetermined time before and after that and the statistic of the measurement data relating to the set value for abnormality determination are recorded as actual data, and a time longer than the time interval collected in the memory at high speed. It is possible to adopt a configuration in which measurement data is sequentially recorded at intervals. The non-volatile recording medium has a recording capacity for recording successive measurement data and actual data, respectively, for a predetermined period of time. When new data is sequentially recorded, the oldest data is sequentially deleted, so that the non-volatile recording medium always has a predetermined period of time from the present. Data can be retained. For example, if the recording capacity is such that data can be stored over a long period of time, such as one year, the data can be repeatedly used over a long period of time while the data of the latest one year is always held. Further, the non-volatile recording medium can be collected from the on-site processing device and processed by a personal computer or the like as necessary.

The data recorded on the non-volatile recording medium can be read out and processed by a portable terminal device at the data collection site before the predetermined period elapses, if necessary, or transmitted via the communication line as described above. Can be read and processed by the center monitoring device.

[0019]

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 (1 a, 1 b,..., 1 n) denote 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 opening meter of the governor main body 2, Various monitoring devices such as primary and secondary side pressure sensors, flow meters, gas detectors, and other measuring devices, and governor cut-off detection sensors, SI sensor abnormality detection sensors, and other abnormality detection devices (not shown) ) Has been established, and it 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 configuration 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 detection sensor and an SI sensor abnormality detection sensor.
These are contact outputs. In FIG. 2, the data collection means A, the abnormality monitoring means B,
The block group corresponding to the communication means C is indicated by a two-dot chain line in the figure.

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 recording 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 recording area such as a RAM every time, for example, every 0.5 seconds. it can.

The data of the measuring instrument group 6a read by the data reading means 8 is either raw data or a non-volatile data such as an IC memory card via the recording medium reading / writing means 12 at predetermined time intervals by performing appropriate arithmetic processing or the like. While being recorded on the recording medium 13 over time, actual data for the period up to that time,
For example, a statistic of each item at each time, for example, data such as an average value and a standard deviation is recorded. In addition, in the non-volatile recording medium, the amplitude and cycle of the hunting abnormality that issues an alarm and the amplitude and cycle of the hunting that does not issue an alarm are recorded as actual data relating to the determination of the hunting abnormality.

For example, the recording capacity of the non-volatile recording medium is one year of the above-mentioned data, and when the recording period is exceeded, when the new data is sequentially recorded, the oldest data is sequentially erased so that Data can be stored for a predetermined period from now, that is, for one year. The data recording interval on the non-volatile recording medium 13 is determined in consideration of the capacity of the non-volatile recording medium 13 and the continuous recording period of data. In the embodiment, the time is longer than the sampling time, for example, one minute. And every time. Note that the recording interval can be made different for each data item.

Among the data intermittently read by the data reading means 8, the data of the measuring equipment group 6a is compared with set values and actual data by the data processing means 9, and other calculations are performed. Is performed. The processing such as the generation of the alarm includes the above-described determination of the hunting abnormality and the determination of the generation of the alarm.

For example, the primary and secondary pressures of the governor body 2 from the measuring instrument group 6a, the opening degree of the governor body 2, the flow rate,
The data such as the gas concentration is read by the data reading means 8 at every sampling time of 0.5 seconds, for example, and is compared with the preset upper and lower limits by the data processing means 9 to monitor the 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 performing the above-described data abnormality determination and the measurement device abnormality determination, if a process abnormality is determined, the data processing means 9 issues an alarm output to the abnormality determination means 10 and at the same time, The data of the predetermined time before and after that is temporarily recorded in the elapsed data storage means 11 as elapsed data. The progress data storage unit 11 is constituted by a nonvolatile storage unit such as an SRAM backed up by a battery.

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 nonvolatile recording medium 13 via the recording medium read / write unit 12 as necessary, depending on the content of the abnormality, and stores the data of the abnormality in the past recorded on the nonvolatile recording medium 13 . The abnormality can be determined by comparing the data with similar data. In addition, in addition to the abnormality data itself, the elapsed data temporarily recorded in the elapsed data storage unit 11 can be used for such an abnormality determination operation.

FIG. 4 schematically shows the data of the measuring instrument. The range indicated by the two-dot chain line in the figure shows the range R within the standard deviation of the past data. Obtained by calculating the average value and standard deviation of each measurement item by the measuring device for an appropriate period up to the same time,
This performance data is stored in the nonvolatile recording medium 13 as described above.
To record. In the figure, the dashed lines above and below the range R indicate the upper and lower limit levels for abnormality determination, respectively. The bold solid line D in the figure shows the transition of the current data, and points a, b, c, d, e, and f in the figure.
At points g,..., The upper limit or lower limit level is exceeded, and the cycle exceeding these levels is also shorter than the swell cycle of the actual data as shown in FIG.
Therefore, the abnormality determining means 10 determines that the hunting is abnormal.

A set value for determining a hunting abnormality, for example, a set value of the amplitude, is initially set to the upper and lower limit levels, and the hunting abnormality is determined.
By gradually lowering the level of the set value, a small hunting abnormality can be detected. Further, when the set value gradually decreases and the number of times of hunting abnormality determination increases, the set value is gradually increased again, so that allowable hunting abnormality determination can be reduced. Such a change in the set value can be performed by the center monitoring device 4 via the communication line 5 and the communication means C.

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 importance of the abnormality is high, the communication management means 14 interrupts the other processes currently in operation 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.

Reference numeral 15 denotes communication control means managed by the communication management means 14, 15a denotes communication control means for a dedicated / wireless line, 15b denotes communication control means for a public line, 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.
6c is configured to be connectable to portable terminal equipment and other modems.

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, 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. Communication control means 26b and a public communication modem 27b.

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 a public line 20 is used as the communication line 5, the communication management means 14
b is selected, and the center monitoring device 4 is called via the transmission / reception means 16b to establish a line connection. Next, the communication management unit 14 of the on-site processing device 3 and the monitoring unit 21 of the center monitoring device 4 mutually confirm and establish a data link, and first, the on-site processing device 3 sends the abnormality determination unit 10 to the center monitoring device 4. The data of the content of the abnormality determined by is transmitted.

In the center monitoring device 4, the monitoring means 21 displays the data of the contents 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 accesses the non-volatile recording medium 13 via the recording medium read / write means 12 according to the content of the data transmission request, reads predetermined data, and transmits this 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. Further, as described above, the progress data storage means 1 for temporarily storing the progress data
1, the progress data storage means 1
The first data can also 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 non-volatile recording medium 13 has, for example, a capacity such that the above-mentioned data can be recorded for one year or more. As described above, when sequentially recording new data exceeding a period corresponding to the storage capacity, the oldest data is stored. Are sequentially erased, so that the data for the latest one year can be retained and used repeatedly. Alternatively, in some cases, the data can be collected from the on-site processing device 3 every year, brought back, and analyzed with a personal computer or the like. In this case, a means for leaving the result data in the on-site processing device 3 is required.
Further, the portable terminal device 28 is connected to the modemless serial interface 16c as needed, and a data transmission request is sent to the communication management means 14 via the communication control means 15c for serial communication, thereby enabling non-volatile recording. Medium 1
3 can be read out to the portable terminal device 28 or the like for processing.

[0043]

As described above, the present invention has the following effects. The on-site processing equipment automatically determines hunting errors and reports necessary alarms to the center monitoring device, so monitoring centers can easily identify hunting errors using general-purpose software such as a personal computer, and can respond quickly. Processing can be performed. It is possible to constantly monitor the abnormality in real time, not by patrol inspection every week. Therefore, it is not necessary to perform a collection operation every short period as in the case of the on-site recording paper system, and the data can be directly processed by a computer without performing an input operation required in the case of the on-site recording paper system. As compared with the case where data is sequentially collected at the center and processed by a computer as described above, the processing load on the center monitoring device is small, and neither the hardware nor the software becomes enormous, and therefore the CPU load and the cost are greatly increased. It is possible to make a significant reduction. Since the operation in the center monitoring device is simple, a skilled person is not required. The actual data is recorded on the portable non-volatile recording medium, and the measured data is used as data for judging the abnormality of the measured data, whereby the abnormality can be reliably detected.

[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.

FIG. 4 is an explanatory diagram conceptually showing data of a measuring device and an abnormality determination operation.

[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 recording means 12 Recording medium read / write 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

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04Q 9/00-9/16 H03J 9/00-9/06

Claims (7)

(57) [Claims] An on-site processing device is installed at a data collection site, and a common center monitoring device is connected to a number of on-site processing devices via a communication line.
The monitoring data collecting means for collecting the monitoring data in a memory at a high speed, the data reading / writing means for the non-volatile recording medium, the data abnormality monitoring means, and the communication means by a communication line are constituted. A function of comparing the fluctuation of data fetched into the memory at a high speed with a set value to determine an abnormality, and when the abnormality is determined, measurement data for a predetermined time before and after the abnormality is provided to the abnormality monitoring means. Gaku
A remote monitoring device characterized in that the data is recorded in a spontaneous progress data storage means, and the set values for determining an abnormality in data fluctuation in the abnormality monitoring means are a deviation, an amplitude, a cycle, and a number of repetitions. 2. A field processing device installed at a data collection site, and a common center monitoring device connected to a number of field processing devices via a communication line.
The monitoring data collecting means for collecting the monitoring data in a memory at a high speed, the data reading / writing means for the non-volatile recording medium, the data abnormality monitoring means, and the communication means by a communication line are constituted. A function of comparing the fluctuation of data fetched into the memory at a high speed with a set value to determine an abnormality, and when the abnormality is determined, measurement data for a predetermined time before and after the abnormality is provided to the abnormality monitoring means. Gaku
It is characterized in that it is configured to record in the spontaneous progress data storage means, and is configured to record sequential measurement data at a time interval longer than the time interval collected in the memory at high speed on the non-volatile recording medium. Remote monitoring device 3. A field processing device installed at a data collection site, and a common center monitoring device connected to a number of field processing devices via a communication line.
The monitoring data collecting means for collecting the monitoring data in a memory at a high speed, the data reading / writing means for the non-volatile recording medium, the data abnormality monitoring means, and the communication means by a communication line are constituted. A function of comparing the fluctuation of data fetched into the memory at a high speed with a set value to determine an abnormality, and when the abnormality is determined, measurement data for a predetermined time before and after the abnormality is provided to the abnormality monitoring means. Gaku
The non-volatile recording medium has a recording capacity for recording sequential data and past actual data for a predetermined period of time, and the oldest data is stored when new data is sequentially recorded. A remote monitoring device characterized in that the data from the present to a predetermined period before is always retained by sequentially deleting 4. The non-volatile recording medium according to claim 1, wherein a statistic of measured data relating to a set value for abnormality determination is recorded as actual data. Remote monitoring device described in 5. The remote monitoring device according to claim 1, wherein a set value for determining an abnormality in the abnormality monitoring unit is configured to be changeable via a communication unit. 6. The remote monitoring apparatus according to claim 1, wherein the non-volatile recording medium is a portable recording medium such as an IC memory card. 7. The remote monitoring device according to claim 1, wherein the data collection site is a governor room.