JP3180884B2 - 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 is carried out on a weekly basis in accordance with security regulations with the purpose of leak inspection, replacement of recording paper such as pressure, collection, and gas odor confirmation. 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 measurement data on a round chart (one week recording paper).
The round chart with the recorded data is collected, brought back and inspected by each person to check for abnormal pressure hunting. When necessary data is processed by a computer, the data is input using a digitizer or a keyboard.

[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. In this system, there are a short-period calling system for collecting data in real time in the center monitoring device, and a system for storing measurement data in the data collection device for a predetermined period and communicating this within a predetermined period.

[0004]

First, in the former case,
There are the following issues. Abnormalities can only be grasped by patrol inspections every week or by notification, that is, real-time monitoring cannot be performed. It is necessary to check the collected round charts one by one to check for abnormal pressure. When an attempt is made to determine an abnormality by processing the collected data of the round chart by a computer, it is difficult to input the data because a large amount of data is required. The latter has the following problems. The data collected by the center monitoring device becomes enormous, and a large storage device is required. In addition, arithmetic processing such as abnormality determination becomes enormous, and a huge system is required. Since the short-cycle calling method is a real-time data collection, if the number of data collection devices targeted by the center monitoring device increases, the processing load becomes enormous and the system cannot be stopped. The method of storing collected data for a predetermined period and communicating within the predetermined period lacks real-time performance, and does not allow abnormal system stoppage for a predetermined period. Accordingly, an object of the present invention is to solve such a problem and rationally detect an abnormality of a sensor or the like in a measuring device.

[0005]

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 comprises monitoring data collection means, data reading / writing means for an IC card, data abnormality monitoring means, and communication means via a communication line. In addition to recording the past performance data together with the data, the data abnormality monitoring means has a function of judging the abnormality of the measuring device using the past performance data, and the IC card is always used as the reading / writing means. When the new data is sequentially recorded, the oldest data is sequentially erased, and the data from the present to a predetermined period before is always retained. Configuration and then, the past performance data
Is the same time for each measurement item
We propose a remote monitoring device that uses the average value and standard deviation for an appropriate period of time .

Further, according to the present invention, it is installed at a data collection site.
On-site processing equipment and many on-site processing equipment via communication lines
And a common center monitoring device
The processing device includes monitoring data collection means and an IC card.
Data reading / writing means for data and data abnormality monitoring means
And the communication means by the communication line, the IC card
Is a structure that records past performance data along with sequential data.
In addition to monitoring the data,
Constructs a function to judge abnormality of measuring equipment using performance data
However, always keep the IC card attached to the read / write means.
When recording new data sequentially, keep the oldest
By erasing new data in sequence,
An IC card that holds data up to a fixed period before
The data recorded in the
Remote monitoring device configured to be read and processed by external devices
Suggest.

According to the present invention, in the above configuration,
The data recorded on the IC card can be
It is recommended that the center monitoring device be configured to be able to read and process.
Plan.

Further, the present invention proposes to apply a governor of a city gas supply system as a data collection site in the above configuration.

[0009]

The data from 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, and is constantly monitored by the abnormality monitoring means to determine the abnormality. Done. On the other hand, the collected data is sequentially recorded on the IC card at predetermined time intervals longer than the time interval taken into the memory. In addition to the above-described data, the IC card also includes data obtained by statistically processing the data up to that time at the same time, in this case, each measurement item by each measuring device for an appropriate period up to that time at the same time. The average value and standard deviation are recorded. The averaging process can be a weighted average taking appropriate weights into account.

As described above, the sequential data fetched into the memory at high speed is constantly monitored by the abnormality monitoring means.
An abnormality is determined by the abnormality determining means. When it is determined that the abnormality is abnormal, the communication unit calls the center monitoring device and transmits the abnormality determination result to the center monitoring device.
At the time of abnormality determination, by referring to past performance data recorded on the IC card, it is possible to determine an abnormality in consideration of past performance. For example, when the present invention is applied to governor monitoring, as a result data to be recorded on an IC card, a weighted average of a change width of an hourly operation pattern of past governors, for example, in minutes, and a deviation width of the result is held. If there is an operation fluctuation that has not occurred in the past, that is, an operation fluctuation that exceeds the deviation width, it can be determined as a deviation abnormality based on the actual results. In addition, if actual data recorded on the IC card is sequentially recorded at appropriate times before and after the time of the abnormality when the abnormality monitoring unit determines that the abnormality is abnormal in the past, the abnormality can be compared with a similar pattern in the past. Can be used to determine the abnormality.

In this way, the center monitoring device can detect the occurrence of an abnormality at each data collection site without collecting and processing the data of the measuring equipment and the like, thereby reducing the system resources. At the same time, quick response measures are possible without requiring skill.

However, if necessary in the center monitoring device, a request for transmitting the data of the IC card is issued to the communication means of the local processing device that has reported the abnormality,
Data recorded on the IC card can be obtained, and this data can be efficiently used for analysis and determination of abnormality.

The IC card is provided with a recording capacity for recording sequential data and past performance data, respectively, for a predetermined period of time. When new data is sequentially recorded, the oldest data is sequentially erased, so that an IC card always has a predetermined capacity. Data of the period can be retained. For example, if the storage capacity is such that data can be stored for a long period of time, such as one year, the data can be continuously used over a long period of time while keeping the latest one year of data, and the power is turned off. Even if the past record data does not disappear, the record data can be completely guaranteed, and the use of the method of using the past record data for abnormality judgment can be completely guaranteed, and the abnormality judgment due to the loss of the record data Runaway of operation does not occur.

The data recorded on the IC card is read out and processed by a portable terminal device at the data collection site as required before the predetermined period elapses, or the data is stored in the center via the communication line as described above. It can be read and processed by the monitoring device.

[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 (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 and 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.

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 singly or in combination. The center monitoring device 4 and each on-site processing device 3 constitute communication means corresponding to the communication line.

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 or 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 at high speed into an appropriate recording area of the memory by the data reading means 8 for performing the subsequent processing. The data reading means 8 has a function of controlling the data input means 7a and 7b and intermittently transferring data to a predetermined temporary recording area of the memory at appropriate time intervals, for example, every 0.5 seconds. be able to.

The data of the measuring instrument group 6a read at a high speed by the data reading means 8 is constantly monitored by the abnormality monitoring means B to determine an abnormality as described later, and the data at a predetermined time interval for each item. Is recorded over time on the IC memory card 13 via the IC card read / write means 12, and actual data for the period up to that time, for example, statistics of each item at each time, for example, data such as an average value and a standard deviation are recorded. Record. This averaging process includes a weighted average.

For example, when the recording capacity of an IC card is one year of the above-mentioned data, and when the recording period is exceeded, when recording new data sequentially, the oldest data is sequentially deleted, so that the current data is always stored from the present. Data for a predetermined period, that is, one year, can be retained. This IC
The recording interval of the data on the card 13 is determined in consideration of the capacity of the IC card 13 and the continuous recording period of the data. In the embodiment, the recording interval is longer than the sampling time, for example, every one minute. Note that the recording interval can be made different for each data item as described above.

Among the data intermittently read into the memory by the data reading means 8, the data of the measuring instrument group 6 a is subjected to comparison, correction and other calculations with set values and actual data by the data processing means 9, Processing such as generation of an alarm as a result is performed. This set value can be changed by a command from the center monitoring device 4 via the communication means C described later.

For example, 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 at every sampling time of, for example, 0.5 seconds as described above. At 9, the upper and lower limits are monitored by comparing the preset 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 above-described data abnormality determination, when it is determined that a process or the like is abnormal, the data processing means 9
Issues an alarm output to the abnormality determination means 10 and records the corresponding data in the progress data recording means 11 together with data for a predetermined time before and after that, for example, 20 minutes as progress data. The progress data recording means 11 can be constituted by a non-volatile storage means such as a battery-backed SRAM, for example. The progress data is recorded on the IC card 13 as a pattern of abnormal type data thereafter. can do.

The abnormality judging means 10 monitors 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 to judge an abnormality and to carry out processing accompanying it. I do. That is, abnormality determination means 1
In the case of 0, when the data processing means 9 issues an alarm or when the abnormality detection device group 6b issues an abnormality detection output, the abnormality handling process is performed 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 unit 14, and the like.

That is, when the data processing means 9 issues an alarm, the abnormality determining means 10
Whether the abnormality is a single abnormality, an area abnormality, an abnormality in a process such as a governor operation, an abnormality of the measurement equipment group 6a, 6b, or the like, is determined by the on-site processing apparatus 3 alone or by another communication means described later. The determination is made through information exchange through communication with the on-site processing device. At this time, the abnormality determination unit 10 accesses the IC card 11 via the IC card read / write unit 12 as necessary depending on the content of the abnormality, and
An abnormality can be determined by comparing the data with similar past data recorded on the C card 13 or the like. In addition, the history data temporarily recorded in the history data recording unit 11 can be used for such an abnormality determination operation.

The abnormality determining means 10 determines 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 dedicated / wireless line communication control means, 15b denotes public line communication control means, and 15c denotes serial communication communication control means. 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 the 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 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. 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 is an IC according to the contents of the data transmission request.
The IC card 13 is accessed via the card reading / writing means 12 to read predetermined data and transmit the data to the center monitoring device 4. 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 in the temporary storage unit 11 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 IC card 13 has a recordable capacity for the data for one year or more, and when sequentially recording new data exceeding the period corresponding to the storage capacity as described above, the oldest data is sequentially erased. By doing so, it is possible to keep the data for the latest one year by repeatedly using it. When processing data recorded on an IC card, the modemless serial interface 16c
By transmitting a data transmission request to the communication management means 14 via the serial communication communication control means 15c, the data recorded on the IC card 13 can be transferred to the portable terminal equipment 28 or the like. To the communication line 5
And can be read out by the center monitoring device via the.

[0038]

The present invention is as described above.
It has the following effects. No need for weekly patrols
The cost of patrol inspection can be reduced. Weekly
Regardless of patrol inspection, always monitor and check for abnormalities in real time.
Can grasp. Past to IC card for each data collection site
Is always stored for a predetermined period of time.
Compare performance data to current data to see trends
Various judgment processes using past results such as misalignment are possible
Becomes Necessary data such as peak data
Data processing, read from portable IC card
Input is easy. Processing load of the center monitoring device
Small, and both hardware and software are huge
Therefore, it can be constructed on a small scale. In particular, data storage
Functionality is much smaller. In center monitoring equipment
Processing is performed by the remote monitoring device.
Can be simple. Even if the power is turned off, the past recorded data
Since the data is not lost, the recorded data can be completely guaranteed.
And use past performance data to determine abnormalities
The use of the method can be completely guaranteed, due to the loss of actual data
Extremely high reliability, such as no runaway of the abnormality judgment operation
No. For example, in the security regulations, "record for more than one year"
Conditions can be sufficiently satisfied.

[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 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 9/00-9/06

Claims (4)

(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.
A monitoring data collection unit, a data reading / writing unit for the IC card, a data abnormality monitoring unit, and a communication unit via a communication line, wherein the IC card records past data together with sequential data. Along with
The data abnormality monitoring means has a function of judging abnormality of the measuring device using the past performance data, and the IC card is always held in the reading / writing means in the attached state,
When sequentially recording new data, by sequentially erasing the oldest data, always hold the data from the present to a predetermined period ago, the past performance data,
For each measurement item by the measuring device,
A remote monitoring device characterized by using an average value and a standard deviation for a time period. 2. A field processing device installed at a data collection site.
And many on-site processing devices connected via communication lines.
Center monitoring equipment, and the on-site processing equipment includes:
Monitoring data collection means and data
Read / write means, data abnormality monitoring means, and communication line
Communication means, and the IC card stores sequential data
Along with the configuration to record past performance data,
We used past performance data for data abnormality monitoring.
An IC card that configures a function to determine the abnormality of the measurement device
Is always attached to the read / write means, and
When recording new data sequentially, the oldest data is
By erasing, it is always possible to
It is configured to hold data, and is stored in the IC card.
Data is read by portable terminal equipment through communication means.
Remote monitoring device characterized in that it can be processed
Place 3. The data recorded on the IC card is:
3. The remote monitoring device according to claim 1, wherein the communication device can be read out and processed by the center monitoring device. 4. The remote monitoring device according to claim 1, wherein the data collection site is a governor room.