JP3180889B2 - Remote monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

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

[0004]

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

In the latter method, the amount of data collected by the center monitoring device becomes enormous, and the amount of arithmetic processing such as abnormality determination becomes enormous.
Human resources, that is, system resources, are enormous and impractical.

[0006] In the latter method, it is determined whether the governor abnormality is a single abnormality or an area abnormality in which the governor of another related system adjacent to the governor system is also abnormal at the same time. Skilled humans must scrutinize data on governors of related strains, and automation is difficult. Accordingly, an object of the present invention is to solve such a problem.

[0007]

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 a portable non-volatile recording medium, data abnormality monitoring means, and communication means by a communication line. Has a communication function with other on-site processing devices in addition to the communication function with the center monitoring device.
And have you in communication, if there is no response to the calling of a predetermined time or more
Proposes a remote monitoring device having a function of communicating with another center monitoring device .

According to the present invention, in the above-described configuration, when a defined abnormality is detected, a plurality of predetermined related
It is proposed to configure a function for performing communication for inquiries between field processing devices at other data processing sites in the field processing device.

According to the present invention, it is proposed that the nonvolatile recording means be an IC memory card in the above configuration.

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

[0011]

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

The collected data is monitored by abnormality monitoring means to detect an abnormality. When an abnormality is detected, the communication unit calls the center monitoring device and transmits the content of the abnormality. If there is no response to the call for a predetermined time or more, the communication means calls another center monitoring device to perform a predetermined communication. Therefore, when communication with the center monitoring device in a normal state cannot be performed due to some kind of trouble, it is possible to prevent the inconvenience that the notification of the abnormality is not sent from the on-site processing device to the center monitoring device.

In the above operation, if the content of the abnormality detected by the abnormality monitoring means is an abnormality related to another data collection site, and if it is defined in advance, the communication means transmits the other data related to the data collection site. A call is made to the field processing device at the collection site, and an inquiry is made as to whether or not the abnormality is also detected at the field processing device at the call destination. As a result of the inquiry, if the abnormality is also detected in the relevant local processing device at the call destination, the abnormality is determined as an abnormality common to the relevant data collection site, that is, an area abnormality, and the other relevant data collection site is determined. In the case where the abnormality is not detected, it is determined that the abnormality is a single abnormality, and the determination result is reported to the center monitoring device together with the data.

Therefore, the center monitoring device itself can collect and process raw data and detect an abnormality occurring at each data collection site without detecting the abnormality, and determine whether the abnormality is a single abnormality. It is possible to know whether or not the area is abnormal, and from this, it is possible to comprehensively monitor abnormalities at many data collection sites. Therefore, the center monitoring device can reduce system resources required for data collection and processing. Also, the operator of the center monitoring device does not need to have a high level of knowledge and skill to analyze data and detect abnormalities. Becomes possible.

However, if necessary in the center monitoring device, a request for transmission of the data of the portable non-volatile recording means is issued to the communication means of the site processing apparatus which has reported the abnormality, so that the data is stored in the portable non-volatile recording means. Data can be obtained, and this data can be efficiently used for analysis and determination of abnormality.

A portable non-volatile recording medium for continuously recording data in each on-site processing device is an IC memory card or the like, so that data can be stored for a long period of time, for example, one year. be able to. This portable non-volatile recording medium, when exceeding the period as the recording capacity,
When sequentially recording new data, the oldest data is sequentially erased, so that data for a predetermined period, for example, one year from the present can always be retained. Alternatively, it can be collected from the on-site processing device after a lapse of a predetermined period and processed by a personal computer or the like. Also, the data recorded on the portable non-volatile recording medium can be read out and processed by a portable terminal device at the data collection site as necessary even before the predetermined period elapses, or transmitted to the center device via a communication line. It can be read and processed.

[0017]

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 numeral 1 (1a, 1b,..., 1n) denotes a plurality of pipes branched from the common city gas supply pipe 2, for example, medium pressure pipes.
Each of these pipes 1 has a governor 3 (3a, 3b,...,
3n) is installed to supply the gas at a reduced pressure. Reference numerals 4 (4 a, 4 b,..., 4 n) denote respective governor chambers. , Flowmeters, gas detectors, etc., and various monitoring devices (not shown) such as governor cut-off sensors, SI sensors, etc., are installed. Data collection sites for governor monitoring It has become. A field processing device 5 that collects and processes data from these various devices
(5a, 5b, ..., 5n) are installed outside the governor room 4.

Reference numeral 6 denotes a center monitoring device provided in a monitoring center. The center monitoring device 6 is connected to the on-site processing device 5 at each data collection site via the communication line 7 to constitute a remote monitoring device. ing. The communication line 7 is a public line,
The dedicated line and the wireless line are applied singly or in combination, and the center monitoring device 4 and each on-site processing device 5 constitute communication means corresponding to these communication lines 7. Reference numeral 8 denotes a center monitoring device provided in the second monitoring center,
This center monitoring device 8 is also connected to the communication line 7. The second monitoring center is usually connected to a plurality of other on-site processing devices to form a remote monitoring device, or is installed as a backup of the above-mentioned center monitoring center also as a maintenance center. Etc. are appropriate.

FIG. 2 is a block diagram showing an example of the construction of the on-site processing apparatus 5 constituted by a microcomputer application apparatus and the like. Reference numeral 9a connected to the on-site processing apparatus 5 denotes an opening meter of the governor 3, a governor 3 1 shows a measurement device group such as a primary side and a secondary side pressure sensor, a flow meter, a gas detector, and the like, which are configured to output measurement data in an analog amount.
Reference numeral 9b denotes a group of abnormality detection devices such as a governor cutoff sensor and an SI sensor, and these are contact outputs.
In FIG. 2, a block group corresponding to the data collection unit A, the abnormality monitoring unit B, and the communication unit C in each of the above-described components is surrounded by a two-dot chain line in the figure.

The on-site processing apparatus 5 includes the above-described measuring equipment group 9a
Input means 10a, 10 for connecting the abnormality detection equipment group 9b to the
b. That is, reference numeral 10a is a measurement data input means, which comprises an analog preprocessing 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 10b denotes an abnormality detection data input means, which is composed of a level conversion circuit and the like.

The data converted into a predetermined digital signal by each of the data input means 10a and 10b is temporarily read into an appropriate storage area by the data reading means 11 for performing the subsequent processing. The data reading means 11 can be configured as a function of controlling each of the data input means 10a and 10b and intermittently transferring data to a predetermined storage area of the main memory every time, for example, every 0.5 seconds. .

Of the data intermittently read by the data reading means 11, the data of the measuring equipment group 9a is compared with upper and lower limit set values, corrected and other calculations are performed by the abnormality detecting means 12, and as a result, Is performed as a warning.

That is, data such as the primary and secondary pressures of the governor 3, the opening degree of the governor 3, the flow rate, and the gas concentration from the measuring instrument group 9 a are sampled by the data reading means 11 for a sampling time of, for example, 0.5 second. Is read every time, and the abnormality detecting means 12
Is monitored in comparison with the preset upper and lower limits. The sampling time is
It is set as short as possible so as to correspond to the maximum speed of data change expected when an abnormality occurs. In addition to the processing described above, if necessary, calculations such as a calculation of a data difference between adjacent sampling points and a time-based weighted average processing of data are performed, and these data are also compared with upper and lower limit set values. It can be performed. In the former case, the abnormality can be monitored in anticipation of changes over time, and in the latter case, the abnormality can be monitored in the past performance comparison.

As a result of the above comparison, if any of the data exceeds the upper and lower limits, the abnormality detecting means 12 issues an alarm output to the abnormality processing means 13 and the data reading means 1
The relevant data transferred to the storage area of the main memory by 1 is transferred to the progress data storage means 14 as progress data together with data before and after the data. Therefore, the storage area on the main memory to which the data is transferred by the data reading unit 11 is:
It is an area large enough to store at least the progress data. The progress data storage means 14 is not a storage area on the main memory, but is, for example, a battery-backed SR.
It is composed of a nonvolatile auxiliary memory such as an AM.

On the other hand, as described above, the data reading means 11
The data read into the storage area on the main memory is recorded on the portable non-volatile recording medium 16 such as an IC memory card by the recording medium read / write means 15 at predetermined time intervals. The data recording interval on the portable nonvolatile recording medium 16 is determined in consideration of the capacity of the portable nonvolatile recording medium 16 and the continuous recording period of data. In the embodiment, the recording interval is longer than the sampling time, for example, every minute, and the continuous recording period is one year or more.
Note that the recording interval may be different for each data item. The data to be recorded on the portable non-volatile recording medium 16 includes a part of data obtained by the above-described calculation in the abnormality detecting means 12 in addition to raw data from the measuring instrument group 9a. The data to be recorded may be data from the measuring device group 9a at the time of recording, or may be data obtained by statistically processing a large number of data sampled during the recording interval. Examples of the statistically processed data include an average value and a standard deviation for one year up to the same time for each measurement item of the measuring instrument group 9a.

The abnormality processing means 13 monitors an alarm from the abnormality detection means 12 and an abnormality detection output from the abnormality detection equipment group 9b obtained via the data reading means 11, and monitors the equipment groups 9a, 9b.
In addition to the processing for the data abnormality of 9b, the processing for the equipment abnormality of the on-site processing device 5 itself such as the operation error of the data reading means 11 is performed. That is, the abnormality processing means 1
Reference numeral 3 denotes a predetermined procedure when the abnormality detection unit 12 issues an alarm, when the abnormality detection device group 9b issues an abnormality detection output, or when an operation error signal of the data reading unit 11 or the like is issued. Perform error handling processing. The abnormality handling process is an abnormality importance classification process, a process corresponding to the abnormality importance, an output to the communication management unit 17, and the like.

That is, the abnormality processing means 13 is provided with the abnormality detecting means 1.
When the alarm 2 issues an alarm, it is determined from the content of the abnormality data whether the abnormality is a single abnormality, an area abnormality, an abnormality in a process such as a governor operation, or an abnormality in the device groups 9a and 9b itself.
Also, what kind of abnormality is determined by the on-site processing device 5 alone,
Alternatively, the determination is performed through information exchange by communication with another on-site processing device as described later, and a classification process is performed for the importance of the abnormality. The importance of the abnormality corresponds to the urgency. As described later, the abnormality processing means 13 depends on the content of the abnormality.
The above-described determination is performed by communicating with another on-site processing device 5 by the communication means C. Alternatively, the portable non-volatile recording medium 16 is accessed via the recording medium read / write means 15 as necessary,
The abnormality data is compared with past similar data or the like recorded on the portable nonvolatile recording medium 16 to determine the abnormality.
In addition, the elapsed data temporarily stored in the elapsed data storage unit 14 can be used for such an abnormality determination operation.

In this way, the abnormality processing means 13 performs various kinds of abnormality classification processing, for example, as follows. Most important abnormalities (highest priority processing required) ...... Abnormalities that affect society and human life (gas leakage, etc.) Important abnormalities (priority processing required)… Abnormalities that may eventually lead to the most important abnormalities (governor cutoff, governor abnormality, Area abnormalities, etc.) Normal abnormalities (priority processing unnecessary)… Abnormalities in supply operation (upper / lower limit alarms, etc.) Clear equipment abnormalities (optional processing)… Sensors, equipment, recording, communication abnormalities, etc.

After the abnormality is classified by the abnormality processing means 13 as described above, the abnormality notification processing from the on-site processing device 5 to the center monitoring device 6 or the maintenance center device (not shown) by the operation of the communication means C. Is made. In other words, if the abnormality is classified as, the abnormality is reported to the center monitoring device 6 in accordance with the respective importance, and if the abnormality is classified as, the maintenance is performed. Notify the center device of the abnormality.

First, when the abnormality is classified as an abnormality, it is an emergency having a very urgent nature, so that the interruption processing is performed.
Is performed. If the process is classified as (1), the process is an emergency with a little urgency, so the process is set to the priority process. After the process currently in operation is completed, the process of notifying the center monitoring device 6 of the abnormality is performed prior to other processes. If the classification is classified as "", the abnormality is not very urgent, so that as an ordinary process, an abnormality notification process to the center monitoring device 6 is performed after completion of other processes prior to this. If the device is classified as a device, it is apparent that the device is out of order, and the device has a repair. Therefore, an abnormality notification process is directly performed to the maintenance center device.

Next, the configuration of the communication means C will be described. Reference numeral 18 denotes communication control means managed by the communication management means 17, reference numeral 18a denotes communication control means for a dedicated / wireless line, and 18b
Denotes communication control means for public line, and 18c denotes communication control means for serial communication. In the embodiment, the communication control means 18
a is connected to a wireless communication device 20 via a dedicated / wireless line communication modem 19a.
The configuration is such that activation control is performed via the communication device control means 21 and the control output means 22. The public line communication control means 18b is connected to the public line 23 via a public communication modem 19b. The communication control means 18c for serial communication is a modemless serial interface 1c.
9c, and the portable terminal 24 or another external modem can be connected to the modemless serial interface 19c.

FIG. 3 is a block diagram showing an example of the basic configuration of the center monitoring devices 6 and 8. The center monitoring devices 6 and 8 are provided with communication means D corresponding to the communication means C of the on-site processing device 5. , Monitoring means 25, display means 26, alarm means 27, and operation input means 28. In the center monitoring device 6, as the communication means D, like the on-site processing device 5,
A dedicated / wireless line communication control means 30a corresponding to the wireless device 29, a dedicated / wireless line communication modem 31a, a public line communication control means 30b corresponding to the public line 23, and a public communication modem 31b. , Monitoring device 5
In a, only the public line communication control means 30b and the public communication modem 31b are configured. Of course, these communication means D
May have a configuration in which a dedicated line, a wireless line, and a public line are used alone or in an appropriate combination.

In the above configuration, a certain on-site processing apparatus 5
a when the abnormality detection means 12 detects an abnormality in the measurement data, the abnormality is detected as a primary pressure abnormality of the governor 3a (for example, when the measured primary pressure exceeds the upper and lower limits, or when the actual data as described above is used). , Etc.), the other governors 3b branched from the common supply pipe 2 and originally having the same primary pressure,
In the case of an abnormality associated with..., The abnormality processing means 13 calls the field processing devices 5b,... Of the other governors 3b,. Then, an inquiry is made as to whether or not the abnormality is also detected in the on-site processing device 5b,. As a result of the inquiry, if the abnormality is detected in the associated local processing device of the call destination, the abnormality is determined as an abnormality common to the associated data collection site, that is, an area abnormality, and other related data collection is performed. If the abnormality is not detected at the site 5b,..., It is determined that the abnormality is a single abnormality. The abnormality processing unit 13 performs the above-described abnormality classification processing based on the determination, and notifies the center monitoring device 6 via the communication line 7 together with predetermined data, or notifies the maintenance center.

For example, when the center monitoring device 6 is selected as the call destination and the public line 23 is used as the communication line 7, the communication management unit 17 uses the communication control unit 18 for the public line.
b is selected and the center monitoring device 6 is called via the public communication modem 19b to establish a line connection. Next, the communication management unit 17 of the calling source and the monitoring unit 25 of the calling destination mutually confirm and establish a data link, and then the local processing unit 5 detects the abnormality by the abnormality output unit 12 to the center monitoring unit 6. ,
The above, classified and determined by the abnormality processing means 13,
The data of the content of the abnormality is transmitted.

In the center monitoring device 6, the monitoring means 25 displays the contents of the abnormality reported from the on-site processing device 5 by the display means 26.
And an alarm is generated by the alarm means 27 if necessary. As described above, the center monitoring device 4 can detect the occurrence of an abnormality and its contents without collecting and processing raw data of the device at the data collection site by itself.

For this reason, the center monitoring device 6 collects and stores a large amount of data from a large number of data collection sites, processes the large amount of data, detects hardware resources, information resources, and personnel. Resources, that is, system resources, can be significantly reduced. Also, the operator of the center monitoring device does not need to have a high level of knowledge and skill to analyze data and detect abnormalities. Becomes possible.

Of course, the center monitoring device 6 can also 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 6, a data transmission request is sent from the monitoring device 25 of the center monitoring device 6 to the communication management device 17 of the on-site processing device 5 by input from the operation input device 28 or the like. When sent,
The communication management means 17 is connected to the portable nonvolatile recording medium 1 via the recording medium read / write means 15 in accordance with the content of the data transmission request.
6 to read predetermined data and transmit it to the center monitoring device 6 side. In this way, the center monitoring device 6 can collect and analyze raw data of the equipment at each data collection site as needed. In addition, when the temporary storage unit 14 of the progress data is configured as described above, the data of the temporary storage unit 14 may be configured to be transmitted to the center monitoring device 6 as needed.

When the predetermined processing is completed as described above,
Either the center monitoring device 6 or the on-site processing device 5 terminates the data link, releases the line, and terminates the abnormality notification process.

The above is the operation when the center monitoring device 4 is selected as the call destination in the case of the abnormality described above. When the maintenance center device is selected in the case of the abnormality, the same operation is performed to notify the abnormality. You.

When a call is made from the on-site processing device 5 to the center monitoring device 6 as described above, if there is no response to the call for a predetermined time or more due to a failure of the communication line 7 or other reasons, The communication control means 17 of the on-site processing device 5 performs a predetermined communication by calling another center monitoring device 8. Therefore, when communication with the center monitoring device 6 cannot be performed in a normal state due to some kind of trouble, the notification of the abnormality is sent to the on-site processing device 5.
Can be prevented from being sent to the center monitoring device.

The portable non-volatile recording medium 16 has, for example, a capacity such that the above data can be recorded for one year or more. Are sequentially erased, so that data for a predetermined period from the present, that is, for one year, can always be retained. Alternatively, the data can be collected from the on-site processing device 5 every year, brought back and analyzed with a personal computer or the like. If necessary, a portable terminal device 24 is connected to the modemless serial interface 19c,
By sending a data transmission request to the communication management means 17 via the serial communication communication control means 18c, data recorded on the portable non-volatile recording medium 16 can be read out to the portable terminal device 24 and processed. .

[0042]

As described above, the present invention has the following effects. Eliminating the collection operation every short period as in the on-site recording paper system is unnecessary. The data can be processed directly by computer without performing the necessary input work in the case of the on-site recording paper system. The processing load on the center monitoring device is small, and system resources can be significantly reduced. Since the operation in the center monitoring device is simple, a skilled person is not required. If the content of the abnormality is related to another data collection site, confirm whether it is a single abnormality or an area abnormality by communication between the field processing devices,
Can be determined. It is possible to prevent an inconvenience that the notification of the abnormality is not sent to the center monitoring device.

[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, D communication means 1 (1a, 1b, ..., 1n) piping 2 common piping 3 governor 4 governor room 5 on-site processing device 6 center monitoring device 7 communication line 8 center monitoring device (second Monitoring center) 9a measurement equipment group 9b abnormality detection equipment group 10a measurement data input means 10b abnormality detection data input means 11 data reading means 12 abnormality detection means 13 abnormality processing means 14 progress data storage means 15 recording medium read / write means 16 portable non-volatile Recording medium 17 Communication management means 18a, 30a Dedicated / wireless line communication control means 18b, 30b Public line communication control means 18c Serial communication communication control means 19a, 31a Dedicated / wireless line communication modem 19b, 31b Public communication modem 19c Modemless serial interface 20 Wireless communication device 21 Communication device Control means 22 Control output means 23 Public line 22, 25 Monitoring means 24 Portable terminal 26 Display means 27 Alarm means 28 Operation input means 29 Radio equipment

──────────────────────────────────────────────────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.
Monitoring data collection means, data reading / writing means for a portable nonvolatile recording medium, data abnormality monitoring means,
The communication means comprises a communication line, and the communication means has a communication function with the center monitoring device, a communication function with another on-site processing device, and a communication function with the center monitoring device.
In, if there is no answer to the call for more than a predetermined time,
A remote monitoring device having a function of communicating with another center monitoring device. 2. The on-site processing apparatus has a function of performing communication for inquiring between a plurality of preset on-site processing apparatuses on another data processing site when a defined abnormality is detected. The remote monitoring device according to claim 1, 3. The remote monitoring device according to claim 1, wherein the nonvolatile recording means is an IC memory card. 4. The remote monitoring device according to claim 1, wherein the data collection site is a governor room.