JPH08303750A - Governor remote monitoring device in gas supplying system - Google Patents

Abstract

PURPOSE: To perform a remote monitoring of many governors in a municipal gas supplying system with a common center monitoring device. CONSTITUTION: This governor remote monitoring device in a gas supplying systems is comprised of a governor side processing device 3 installed respectively in compliance with each of many governors 2 in a gas supplying system and a center monitoring device 4 which is common to any governor side processing devices. The governor side processing device is comprised of a monitoring data collecting means, a data abnormal state monitoring means, a data reading and writing means for non-volatic recording medium and a communication means with a communication circuit 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a governor remote monitoring device in a gas supply system for city gas or the like.

[0002]

2. Description of the Related Art The current inspection work in a governor for supplying city gas is for the purpose of leak inspection, replacement of recording paper such as pressure, collection and confirmation of gas odor every week based on safety regulations. For this reason, a recorder for recording the primary side pressure, the secondary side pressure and the governor opening is installed in the governor chamber containing the governor. The recorder records the measurement data on a round chart (record paper for one week).
The circular chart that records the data is collected, and people bring it back and inspect it one by one to check for abnormalities. Further, when necessary data such as peak data is processed by a computer, the data is input by a digitizer or a keyboard.

[0003]

SUMMARY OF THE INVENTION In such a system,
There are the following issues. The governor cannot be monitored in real time, and abnormalities can only be grasped at weekly inspections or by reporting. The cost of the weekly inspection is increasing. It is necessary to inspect the collected round charts one by one to check for abnormalities. When computer processing the collected circle chart data, it is difficult to input because there are many necessary data. It is necessary to have a place to store the governor data for more than one year and to manage it. Therefore, the present invention aims to solve such a problem.

[0004]

In order to solve the above-mentioned problems, according to the present invention, a governor side processing device installed corresponding to each of a number of governors of a gas supply system and a common governor side processing device are provided. The central processing unit comprises a center monitoring unit, and the governor-side processing unit comprises a monitoring data collecting unit, a data abnormality monitoring unit, a data reading / writing unit with respect to a nonvolatile recording medium, and a communication unit using a communication line. Propose a monitoring device.

According to the present invention, in the above-mentioned structure, the data read into the memory at high speed by the monitoring data collecting means is monitored by the abnormality monitoring means, and when it is determined that there is an abnormality, the data for a predetermined time before and after that point in time. It is proposed to store in the progress data recording means.

Further, according to the present invention, in the above structure, the nonvolatile recording medium has a recording capacity for recording data for a predetermined period of time, and when new data is sequentially recorded, the oldest data is sequentially erased, so that It is proposed to retain the data from the present to a predetermined period before.

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

According to the present invention, in the above configuration, the governor-side processing device has a communication function with the center monitoring device,
It is proposed to configure the communication function with other governor side processing devices.

[0009]

The data from the various governor monitoring devices are collected at high speed by the monitoring data collection means at regular time intervals and stored in the memory. The collected data is recorded in the portable non-volatile recording medium by the reading / writing means at predetermined time intervals.

The data taken in the memory is constantly monitored by the abnormality monitoring means, and the abnormality is judged. When it is determined to be abnormal, among the data captured in the memory as described above, the measured data for a predetermined time before and after the time determined as above is stored in the progress data storage means,
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 in each governor without collecting and processing the data by itself, can reduce the system resources for this, and require skill. It will be possible to take prompt action without taking any action.

Further, if necessary in the center monitoring device, by issuing a data transmission request of the progress data recording means or the non-volatile recording means to the communication means of the governor side processing device which has reported the abnormality, these recording means are recorded. The data recorded in 1. can be obtained, and this data can be efficiently used for analysis and determination of anomalies.

The non-volatile recording medium has a recording capacity for recording data for a predetermined period, and when the new data is sequentially recorded, the oldest data is sequentially erased so that the data for the predetermined period from the present is always held. be able to. For example, if the recording capacity is such that data can be stored for a long period of time such as one year, the data can be repeatedly used continuously for a long period of time while always holding the latest one year of data. However, the nonvolatile recording medium can be collected from the governor-side processing device and processed by a personal computer or the like, if necessary. The data recorded in the portable non-volatile recording medium may be read and processed by the portable terminal device at the place where the governor is installed, if necessary, even before the predetermined period has elapsed, or via the communication line as described above. It can be read and processed by the center monitoring device.

The data to be recorded in the non-volatile recording medium is the data of the primary pressure of the governor, the secondary pressure, and the governor opening (flow rate) for each predetermined time, as well as that of each measurement item by the measuring instrument at the same time. By using the average value and the standard deviation of the sentence for the appropriate period up to, this data can be used as the actual data for the abnormality determination.

[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 monitoring devices such as pressure sensor, flow meter, gas detector, and other measuring devices on the primary and secondary sides, and abnormality detection devices such as governor shutoff detection sensor and SI sensor abnormality detection sensor (not shown). ) Is installed and it is a data collection site for governor monitoring. The governor-side processing device 3 that collects and processes data from these various devices is installed outside the governor chamber 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. This center monitoring device 4 and the governor side processing device 3 at each data collection site are connected via a communication line 5. Connected to configure a remote monitoring device. The communication line 5 is a public line, a dedicated line, or a wireless line applied individually or in combination, and the center monitoring device 4 and each governor side processing device 3 constitute a communication means according to the communication line.

FIG. 2 is a block diagram showing an example of the configuration of the governor-side processing device 3 formed by a microcomputer application device or the like. Reference numeral 6a connected to the governor-side processing device 3 indicates the opening degree meter of the governor main body 2. , A measuring device group such as a pressure sensor, a flow meter, and a gas detector on the primary side and the secondary side of the governor main body 2, which are configured to output measured data in analog amounts. Reference numeral 6b indicates a group of abnormality detection devices such as a governor cutoff detection sensor and an SI sensor abnormality detection 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.

Input means 7a, 7 for connecting the measuring device group 6a and the abnormality detecting device group 6b to the governor side processing device 3.
b. That is, reference numeral 7a is a measurement data input means, which is an analog preprocessing circuit, an A / D converter,
It is composed of a level converter or the like, and has a function of converting analog data of each measuring device into a predetermined digital signal. 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 at a high speed by the data reading means 8 into an appropriate recording area of the memory for the subsequent processing. The data reading means 8 is constituted by a function of controlling the data input means 7a and 7b to intermittently transfer 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 device group 6a read at high speed by the data reading means 8 is constantly monitored by the abnormality monitoring means B as described later to make an abnormality determination, and data for each item at a predetermined time interval. Is recorded on the non-volatile recording medium 13 such as an IC memory card via the recording medium reading / writing means 12 over time, and the actual data for the period up to that time, for example, the statistical amount of each item at each time, for example, the average value, Record data such as standard deviation.

For example, if the recording capacity of the non-volatile recording medium is set to one year of the above data, and if this recording period is exceeded, new data is sequentially recorded, the oldest data is sequentially erased, so that It is possible to retain data for a predetermined period from the present, 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 data recording period, and in the embodiment, a time longer than the sampling time, for example, 1 minute. Every time. The recording interval may be different for each data item as described above.

Of the data read into the memory intermittently by the data reading means 8, the data of the measuring device group 6a is compared with the set value and the actual data by the data processing means 9 and correction and other calculations are performed. As a result, processing such as alarm generation 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 0.5 seconds as described above, and the data processing means In 9, the upper and lower limits are compared with the preset upper and lower limits, and the upper and lower limits are monitored. 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-described data abnormality determination, if the process abnormality is determined, 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 as progress data together with data of a predetermined time before and after that, for example, 20 minutes. The progress data recording means 11 may be constituted by a non-volatile storage means such as a battery-backed SRAM or the like, or may be a portable non-volatile recording medium 13 in some cases.

The abnormality determination means 10 monitors the alarm from the data processing means 9 and the abnormality detection output from the abnormality detection equipment group 6b obtained via the data reading means 8 to determine the abnormality and the processing associated therewith. I do. That is, the 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 processing 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 means 14, and the like.

That is, when the data processing means 9 issues an alarm, the abnormality judging means 10 determines from the contents of the abnormality data that
Whether the abnormality is a single abnormality, an area abnormality, a process abnormality such as a governor operation, or an abnormality of the measuring device group 6a, 6b, etc. is determined by the governor-side processing device 3 alone or by a communication means described later. The determination is made through information exchange by communication with the governor-side processing device. At this time, the abnormality determining unit 10 accesses the 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 nonvolatile recording medium 13. It is possible to judge the abnormality by comparing with similar data of. In addition to the abnormal data itself, the progress data temporarily recorded in the progress data recording means 11 can be used for such 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 four levels of importance, such as most important, important, less urgent, and less urgent. Then, these contents are output to the communication management means 14.

If 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 and other modems can be connected to 6c.

FIG. 3 shows a basic configuration of the center monitoring device as a block diagram. The center monitoring device 4 includes a communication means D corresponding to the communication means C of the governor-side processing device 3, a monitoring means 21, and a display means. 22, a warning means 23, and an operation input means 24 are provided. As the communication means D, like the governor-side 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 dedicated line / public line 20.
Wireless line communication control means 26b, public communication modem 27b
Is composed.

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 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 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 governor-side processing device 3 and the monitoring means 2 of the center monitoring device 4
After confirming each other and establishing a data link, first, the governor side processing device 3 side transmits to the center monitoring device 4 the data of the abnormality content determined by the abnormality determination means 10.

In the center monitoring device 4, the monitoring means 23 displays the data of the content of the abnormality transmitted from the governor-side processing device 3 on the display means 22, and the alarm means 23 issues an alarm if necessary. 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,
A quick response is possible.

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 governor side processing device 3 by inputting from the operation input means 24 or the like. When the message is transmitted, the communication management unit 14 causes the non-volatile recording medium 1 via the recording medium reading / writing unit 12 according to the content of the data transmission request.
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 needed. .

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

The non-volatile recording medium 13 is composed of, for example, an IC card, has a capacity capable of recording the above-mentioned data for one year or more, and as mentioned above, new data is sequentially passed over a period corresponding to the storage capacity. By sequentially erasing the oldest data when recording, it is possible to keep the data for the latest one year by repeatedly using it. Alternatively, in some cases, the data can be collected from the governor-side processing device 3 once a year, brought back and analyzed by a personal computer or the like. In this case, a means for leaving the performance data in the governor side processing device 3 is required. Further, if necessary, the portable terminal device 28 is connected to the modemless serial interface 16c, and a data transmission request is sent to the communication management means 14 via the communication control means 15c for serial communication, whereby nonvolatile recording is performed. The data recorded in the medium 13 can be read out to the portable terminal device 28 or the like and processed.

[0037]

As described above, the present invention has the following effects. The inspection inspection work for each week becomes unnecessary, and the inspection inspection cost can be reduced. Rather than relying on weekly inspections, it is possible to constantly monitor and detect abnormalities in real time. By providing a function of communicating and checking between the governor-side processing devices of the related governors, it is possible to determine whether the abnormality such as pressure is a single abnormality or an area abnormality. By recording the actual data on the portable non-volatile recording medium and using it as the reference material for the abnormality of the measured data, the abnormality determination of the pressure, the flow rate, the opening degree, etc. becomes easy. When an abnormality occurs, it is easy to understand the cause of the abnormality by automatically saving the sequential data for a predetermined period before and after that time. When necessary data such as peak data is processed by a computer, it can be easily input by reading it from a portable nonvolatile recording medium. In addition, it is easy to collect abnormal pressure changes and trends by using general-purpose software such as a personal computer. 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 a basic configuration of a governor-side processing device 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 body 3 governor side 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 recording 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 2 display means 23 alarm means 24 operational input means 25 wireless device 28 Allowed 搬端 end devices

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[Procedure amendment]

[Submission date] September 7, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[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 a basic configuration of a governor-side processing device 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 Codes] A Data collection means B Abnormality monitoring means C Communication means D Communication means 1 Governor room 2 Governor main body 3 Governor side processing device 4 Center monitoring device 5 Communication line 6a Measuring device group 6b Abnormality detecting device group 7a Measured data input Means 7b Abnormality detection data input means 8 Data reading means 9 Data processing means 10 Abnormality judgment means 11 Progress data recording 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 modem 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 operation input means 25 wireless equipment 28 portable terminal equipment

Claims (5)

[Claims] 1. A governor-side processing device installed corresponding to each of a number of governors of a gas supply system, and a center monitoring device common to a number of governor-side processing devices, wherein the governor-side processing device includes a monitoring device. Remote monitoring device in a gas supply system, characterized by comprising: a data collecting means, a data abnormality monitoring means, a data reading / writing means for a non-volatile recording medium, and a communication means by a communication line. 2. The data read into the memory at high speed by the monitoring data collecting means is monitored by the abnormality monitoring means,
2. The governor remote monitoring device in a gas supply system according to claim 1, wherein when it is determined that there is an abnormality, data for a predetermined time before and after that time is stored in the progress data recording means. 3. A non-volatile recording medium is provided with a recording capacity for recording data for a predetermined period of time, and when new data is sequentially recorded, the oldest data is sequentially erased so that the time from the present time to the predetermined time period is always maintained. The governor remote monitoring device in the gas supply system according to claim 1, wherein the device is configured to retain data. 4. The governor remote monitoring device in a gas supply system according to claim 1, wherein the nonvolatile recording medium is an IC card. 5. The governor in the gas supply system according to claim 1, wherein the governor-side processing device has a communication function with the center monitoring device as well as a communication function with another governor-side processing device. Remote monitoring device