JP3058317B2 - 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. 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 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 equipped with communication means with the center monitoring device is installed in each governor, monitoring measurement data collected by the data collection device and temporarily recorded on a volatile recording medium, There is a method in which the center monitoring device transmits the call to the center monitoring device through a communication line through a periodic call, and the center monitoring device collects the data to record and determine an abnormality or the like.

[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.

In the latter method, after the data recorded on the volatile recording medium is communicated to the center monitoring device within a predetermined time, it is cleared and used for recording the next data.
In addition, since it does not have a function to monitor abnormalities during recording processing, even if an abnormality occurs, the details of the abnormality cannot be confirmed by the center monitoring device, etc., and the reliability of the collected data is lost. I do. 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 includes a monitoring data collection unit, a data recording unit that records the collected data as a result data on a non-volatile recording medium, a main unit processing unit including a data abnormality monitoring unit, A communication processing unit with the center monitoring device is configured, and a CPU is configured in each of the main processing unit and the communication processing unit. The main processing unit has various functions from data collection for monitoring to data recording on the non-volatile recording medium. When the processing is monitored and an abnormality is determined, a recording processing abnormality monitoring function is configured to record the contents of the abnormality in the non-volatile recording medium and to request the communication processing unit to notify the center monitoring device. Together, the communication processing unit is to propose a remote monitoring device configured to monitor function of monitoring the operation of the main processor depending on the presence or absence of a response to periodic response request.

In the present invention, a report request from the main body processing unit to the communication processing unit regarding the recording processing abnormality is made at any time when the recording processing abnormality occurs, or when the recording processing abnormality continues abnormally for a predetermined period. It is proposed to adopt a configuration that originates in.

According to the present invention, in the above configuration,
The recording process abnormality monitoring function records the result of each process from the monitoring data collection to the data recording and the identification information of the executed process in the temporary recording means.
By referring to the executed identification information together with the result of the front process, the abnormality detected by the front process and the abnormality of the front process itself are configured to be identifiable. The present invention proposes a configuration in which the process shifts to monitoring and, when an abnormality is determined, a process of recording and saving the progress of abnormality monitoring recorded in the temporary recording unit in the nonvolatile recording unit.

Further, according to the present invention, the communication processing unit has a function of transmitting the progress of abnormality monitoring recorded in the nonvolatile recording means to the center monitoring device via the main body processing unit in response to a communication request from the center monitoring device. It is proposed to construct

In the present invention, the communication processing unit may have a function of periodically issuing a response request to the main processing unit and monitoring the abnormality of the main processing unit when there is no response for a predetermined time or more.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 schematically shows the entire structure of the present invention. Reference numerals 1 (1a, 1b,..., 1n) denote governor chambers installed in a city gas supply system. 2 together with a measuring instrument group for monitoring the governor body 2 such as an opening meter of the governor body 2, a primary side sensor, a secondary side pressure sensor, a flow meter, and a gas detector, a governor cut-off detection sensor, and an SI sensor abnormality detection. Various monitoring devices (not shown) such as an abnormality detection device group such as a sensor are installed, and the data collection site for governor monitoring is provided. An on-site processing device 3 for collecting and processing 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 and the like 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. Note that a plurality of center monitoring devices 4 may be provided.

FIG. 2 is a schematic block diagram showing an example of the configuration of the on-site processing device 3 constituted by a microcomputer application device or the like. The on-site processing device 3 includes a monitoring data collection unit A and a nonvolatile It comprises a main body processing unit M comprising a data recording means B on a recording medium and a data abnormality monitoring means C, and a communication processing unit S for communicating with the center monitoring device 4, and comprises CPUs 6m and 6s, respectively. .

Reference numeral 7a connected to the on-site processing apparatus 3 denotes a measuring instrument group such as an opening meter of the governor main body 2, pressure sensors on the primary and secondary sides of the governor main body 2, a flow meter, a gas detector and the like. , Are configured to output measurement data in analog quantities. Reference numeral 7b 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.

The on-site processing apparatus 3 includes the above-described measuring equipment group 7a
And input means 8a and 8b for connecting the abnormality detection device group 7b to the input device 8b. That is, reference numeral 8a is a measurement data input means, which comprises an analog pre-processing circuit, an A / D converter, a level converter, etc., and has a function of converting analog data of each measuring device into a predetermined digital signal. It is configured to have. Reference numeral 8b denotes an abnormality detection data input means, which comprises a level conversion circuit and the like.

The data which is converted into a predetermined digital signal by each of the data input means 8a and 8b is temporarily read into an appropriate storage area of the main processing unit M by the data reading means 9 for performing subsequent processing. And For example, the data reading means 9 has a function of controlling each of the data input means 8a and 8b and intermittently transferring data to a predetermined temporary recording area such as a RAM every time, for example, every 0.5 second sampling time. The monitoring data collection means A is constituted by these configurations.

In the above configuration, the data of the measuring instrument group 7a read into the data reading means 9 is not changed from raw data.
Alternatively, after performing appropriate arithmetic processing or the like, the data is recorded over time on the non-volatile recording medium 11 such as an IC memory card via the recording medium read / write means 10 at predetermined time intervals, and the actual data for the period up to that time is recorded. For example, it is configured to record a statistic of each measurement target item at each time, for example, data such as an average value and a standard deviation, and the recording medium read / write means 10 constitutes the data recording means B.

The data recording capacity of the non-volatile recording medium 11 is, for example, one year of the above-mentioned data. When the recording time is exceeded, the oldest data is sequentially erased when recording new data. Always
For a predetermined period from now, that is, in this case, data for the latest one year can be held. The data recording interval on the non-volatile recording medium 11 is determined in consideration of the capacity of the non-volatile recording medium 11 and the continuous recording period of data. For example, in the case of the above example, it is longer than the sampling time. Time, for example, every minute. Note that the recording interval can be different for each measurement target item.

In the main processing unit M, among the data intermittently read by the data reading means 9, the data of the measuring equipment group 7a is set by the data processing means 12 to the set values such as the upper and lower limits and the deviation as the actual data. , And other processing, such as determining an abnormality and generating a warning as a result.

For example, the primary and secondary pressures of the governor body 2 from the measuring instrument group 7a, the opening degree of the governor body 2, the flow rate,
Data such as gas concentration is read by the data reading means 9 at every sampling time of 0.5 seconds, for example, as described above, and is recorded in the non-volatile recording medium 11 and the upper and lower set values preset in the data processing means 12. The abnormality is monitored by comparing with the deviation as the actual data. In addition, if necessary, a predetermined calculation such as a calculation of a data difference between adjacent sampling times, a pressure correction of a flow rate, or a time-based weighted averaging process of the data is performed. Is compared.

As a result of the above processing, if it is determined that the data is abnormal, the data processing means 12 issues an alarm output to the abnormality processing means 13 and, at the same time, stores the relevant data together with the data before and after the data as the elapsed data storage means 14 To record. The progress data storage unit 14 is constituted by a nonvolatile storage unit such as an SRAM backed up by a battery. The abnormality processing unit 13 monitors an alarm from the data processing unit 12 and an abnormality detection output from the abnormality detection device group 7b obtained through the data reading unit 9, and performs a process for the data abnormality of the device groups 7a and 7b. . The processing for the abnormalities includes the processing for classifying the importance of the abnormalities, the processing corresponding to the importance of the abnormalities, the output to the communication processing unit S, and the like. It constitutes monitoring means C.

In this way, the main body processing unit M makes the abnormality processing means 13 determine the abnormality as described above and, at the same time, determines the contents of the abnormality, for example, the most important, important, less urgent, and less urgent. Classification processing is performed into four levels of importance and the like, and a report request to the center monitoring device 4 is output to the communication processing unit S according to the contents.

The communication processing section M comprises a communication management means 15, a communication control means 16 managed by the communication management means 15, and a transmission / reception means 17 controlled by the communication control means 16. That is, 16a is a dedicated / wireless line communication control means, 16b is a public line communication control means, 16c is a serial communication communication control means, and the communication control means 16a is a wireless communication via the dedicated / wireless line communication modem 17a. Connected to the communication device 22, the communication device control means 18, the control output means 1
9, the communication control unit 16b controls the activation of the wireless communication device 22, and the communication control unit 16b controls the public communication modem 17b.
Is connected to the public line 20 via the public telephone line. With the above configuration, the communication management unit 15 can perform communication using either the dedicated / wireless line 21 or the public line 20 as the communication line 5 with the center monitoring device 4. On the other hand, the communication control means 16c is a modemless serial interface 17c.
The transmission / reception means 16c is connected to a portable terminal device 23 and other modems.

In the above configuration, as described above, when the main processing unit M outputs a report request to the center monitoring device 4 to the communication processing unit S, the communication management unit 15 The notification processing to the center monitoring device 4 is performed with the priority set in advance according to the importance thus set.

FIG. 3 is a block diagram showing a basic configuration of the center monitoring device. The center monitoring device 4 includes a communication processing unit D for communicating with a communication processing unit S of the on-site processing device 3, a monitoring unit 24, and a display unit. Means 25, alarm means 26, operation input means 27 and the like. The communication processing unit D includes, similarly to the on-site processing device 3, a dedicated / wireless communication control unit 29a corresponding to the wireless device 28, a dedicated / wireless communication modem 30a, and a dedicated / wireless communication modem 30a corresponding to the public line 20. Line communication control means 29b, public communication modem 30
b.

In the above configuration, the center monitoring device 4 displays on the display means 25 the data of the content of the abnormality transmitted from the communication processing section D of the on-site processing device 3 via the communication line 5 and, if necessary, An alarm is generated by the alarm means 26. 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 collects and analyzes raw data of the equipment at each data collection site, that is, data of the non-volatile recording medium 11 and the temporary recording means 14 of the progress data as needed. You can also.

In the above remote monitoring operation, the main body processing unit M monitors each process from the monitoring data collection to the data recording on the non-volatile recording medium, and determines whether an abnormality has occurred.
The recording process abnormality monitoring function is to record the contents of the abnormality in the nonvolatile recording medium and to request the communication processing unit to notify the center monitoring device. As described above, the notification request may be configured to be issued as needed when a recording processing abnormality occurs, or may be configured to be performed when the recording processing abnormality continues for a predetermined period, for example, one day or more.

For example, the recording processing abnormality monitoring function includes a result of each processing from data collection for monitoring to data recording,
The executed identification information of the processing is recorded in the temporary recording means, and the subsequent processing in the sequential processing refers to the executed identification information together with the result of the preceding processing, so that the abnormality detected by the preceding processing and An abnormality of the process itself is configured to be identifiable, and when it is determined that the recording process is normal, the abnormality monitoring progress recorded in the temporary recording means is deleted and the process proceeds to the next monitoring. Is configured to perform a process of recording and storing the progress of abnormality monitoring recorded in the temporary recording unit in the nonvolatile recording unit.

The details of the recording process abnormality monitoring will be described with reference to the example shown in FIG. 4 together with the flow of the data recording process in the monitoring data collection means A. FIG. 4 shows a process of collecting data from the measuring device 7a and recording the data on the nonvolatile recording medium 11 separately for hardware and software. The recording process proceeds from left to right in the figure. . The top item shows the names of devices and devices as hardware and the name of the process as software, and the bottom item shows the contents of hardware and software abnormalities. .

First, the flow of processing from the left side to the right side will be described. The state signal of the process is transmitted from the sensor and the power supply unit to the input device, and as described above, the input processing to the temporary recording area such as the RAM is performed. Done. Next, arithmetic processing is performed on the input data, and the result of the arithmetic processing is output. Then, the output result is recorded in the non-volatile recording means 11, and data in the temporary recording area which is no longer necessary due to the recording in the non-volatile recording means 11 is deleted.

In such data recording processing, the main body processing section M records the result of each processing and the identification information of the executed processing in a temporary recording means such as a storage area of a RAM. For example, Case 1 indicates that the process is normal and the input system sensor, power supply unit, and input device are also normal. In the input processing, since the input processing has been performed normally, a processed identification signal is issued and the processing is performed. The data is recorded in a predetermined temporary recording means together with the resulting input data. Thereafter, since the arithmetic processing and the output processing are sequentially performed normally, the processed identification signal and the processed data are recorded, and both the processed identification signal and the processed data are determined to be normal. As a result, the input data processed as described above is recorded in the portable non-volatile recording means 11, is deleted from the temporary recording means, and the predetermined processing sequence ends. In addition, the abnormal monitoring progress recorded in the temporary recording means is deleted or overwritten in the recording process of the next data as it is,
The data is not stored in the nonvolatile recording means 11.

On the other hand, in case 2, the sensor
Although the power supply unit and the input device are each normal, and the input processing, the arithmetic processing, and the output processing are normal and the processed identification signal is issued in each processing,
Since there is an abnormality in the input data, it is determined that the data is abnormal in each process. In this case, the abnormality monitoring progress is recorded in the non-volatile recording means 11 as an abnormality of the input data.

In case 3, the sensor, the power supply unit, and the input device are all normal. However, since the input processing has not been performed, the respective data is abnormal, and the processing after the input processing has not been performed. . In this case, as the input processing abnormality, the abnormality monitoring progress
Will be recorded.

As described above, the progress of the abnormality monitoring recorded in the non-volatile recording means 11 can be determined by calling the site processing device 3 from the center monitoring device 4 as required and making a transmission request. The progress of the abnormality in the on-site processing device 3 during the period can be confirmed by the center monitoring device 4, so that the location and progress of the abnormality can be known on the side of the center monitoring device 4, and the response and treatment can be performed promptly.

As described above, the notification of the recording processing abnormality from the on-site processing device 3 to the center monitoring device 4 can be made from the on-site processing device 3 at any time. For example, to explain a specific example of this processing, the main body processing unit M first checks for a failure of hardware such as a sensor, a power supply unit, and an input device before executing processing in each processing from data collection for monitoring to data recording. When a is abnormal, a notification request for a device (hardware) abnormality is issued to the communication processing unit S. When b is normal, execution of processing before each processing is confirmed. That is, the confirmation of the execution of the pre-processing can be performed based on the executed identification information recorded in the temporary recording unit as described above.

As a result of the execution confirmation of b, if a ... is not processed (not executed), a report request is sent to the communication processing unit S that the preprocessing is not processed, and b ... processed (executed) In the case of ()), the processing result of the pre-processing is confirmed. As a result of the confirmation, if a is recorded as abnormal, a report request is sent to the communication processing unit S indicating that the preprocessing is abnormal, and b
... If the processing result is recorded as normal, the processing itself is performed, and the processing result and the executed identification information are recorded in the temporary recording means.

As described above, when the execution of each process from the monitoring data collection to the data recording progresses, and the last process is not executed or the result of the execution is abnormal, a message to that effect is given. A notification request is issued to the communication processing unit S, and the processing result (including unprocessed) and the identification information of the executed processing are recorded together with the processing result and the identification information of the executed processing recorded in the temporary recording means. The data is recorded in the non-volatile recording means 11.

The communication processing unit S periodically issues a response request to the main processing unit M and configures a function of monitoring the response, so that an abnormality of the main processing unit M can be monitored.

[0041]

As described above, according to the present invention, each of the on-site processing devices determines an abnormality of monitored data and transmits predetermined data to the center monitoring device via the communication processing section. The processing device can monitor not only data errors but also hardware and software errors of the on-site processing device and notify the center monitoring device.
Since the configuration is such that the progress of the abnormality of the data or the device is recorded in the nonvolatile recording means together with the result data collected over a long period of time, the following effects are obtained. Eliminating the collection operation every short period as in the on-site recording paper system is unnecessary. The data can be processed directly by computer without performing the necessary input work in the case of the on-site recording paper system. The processing load on the center monitoring device is small, and neither the hardware nor the software is enormous. Since the operation in the center monitoring device is simple, a skilled person is not required. Even if a processing error occurs in various types of logic-based abnormality determination, the logic data can be prevented from running out of control by using the actual data recorded on the portable non-volatile recording medium for abnormality determination by resetting or other processing. Can,
The reliability of remote monitoring can be improved. By reading the progress of the recording process abnormality recorded on the non-volatile recording medium at the desired date and time, the details of the location and progress of the abnormality can be confirmed by the center monitoring device, and the response and treatment can be performed quickly. Can be easily performed. As shown in (1), the cause of the recording abnormality can be grasped and a quick response can be taken, so that the reliability of the recording is improved.

[Brief description of the drawings]

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

FIG. 2 is a block diagram illustrating an example of a basic configuration of a field processing apparatus according to the present invention.

FIG. 3 is a block diagram showing an example of a basic configuration of a center monitoring device according to the present invention.

FIG. 4 is an explanatory diagram showing an example of monitoring a recording process abnormality according to the present invention.

[Explanation of symbols]

A monitoring data collecting means B data recording means C abnormality monitoring means M main body processing section S communication processing section D communication processing section 1 (1a, 1b, ..., 1n) governor room 2 governor main body 3 field processing device 4 center monitoring device 5 Communication line 6m, 6s CPU 7a Measuring equipment group 7b Abnormality detecting equipment group 8a Measurement data input means 8b Abnormality detection data input means 9 Data reading means 10 Recording medium reading / writing means 11 Non-volatile recording medium 12 Data processing means 13 Abnormal processing means 14 Progress Data storage means 15 Communication management means 16a, 28a Dedicated / wireless line communication control means 16b, 28b Public line communication control means 16c Serial communication communication control means 17a, 30a Dedicated / wireless line communication modem 17b, 30b Public communication modem 17c Modemless serial interface 18 Communication device control means 9 the control output unit 20 public line 21 only, wireless communication line 22 wireless communication device 23 accepted 搬端 end device 24 monitoring means 25 display means 26 alarm means 27 operational input means 29 wireless device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01D 21/00 H04Q 9/00 311

Claims (6)

(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 collecting means, data recording means for recording the collected data as performance data on a non-volatile recording medium,
A main processing unit having a data abnormality monitoring unit, and a communication processing unit with the center monitoring device are configured, and a CPU is configured in each of the main processing unit and the communication processing unit.
When each process from monitoring data collection to data recording on the non-volatile recording medium is monitored and an abnormality is determined, the content of the abnormality is recorded on the non-volatile recording medium and a report to the center monitoring device is communicated. Remote monitoring characterized by comprising a recording processing abnormality monitoring function for requesting the processing unit, and a monitoring function for monitoring the operation of the main processing unit based on whether or not a response to a periodic response request is provided to the communication processing unit. apparatus 2. The remote monitoring device according to claim 1, wherein a report request from the main processing unit to the communication processing unit regarding the recording processing abnormality is issued as needed when a recording processing abnormality occurs. 3. The remote monitoring apparatus according to claim 1, wherein the notification request from the main processing unit to the communication processing unit regarding the recording processing abnormality is issued when the recording processing abnormality continues abnormally for a predetermined period. 4. The recording process abnormality monitoring function records the result of each process from data collection for monitoring to data recording and the identification information of the executed process in the temporary recording means. By referring to the executed identification information together with the result of the front process, the abnormality detected by the front process and the abnormality of the front process itself are configured to be identifiable. 2. The remote control system according to claim 1, wherein, when the abnormality is determined, a process of recording the abnormality monitoring progress recorded in the temporary recording unit in the nonvolatile recording unit is performed. Monitoring device 5. The communication processing unit has a function of transmitting the progress of abnormality monitoring recorded in the non-volatile recording means to the center monitoring device via the main body processing unit in response to a communication request from the center monitoring device. The remote monitoring device according to claim 1, wherein: 6. The communication processing unit according to claim 1, wherein the communication processing unit periodically issues a response request to the main processing unit, and monitors an abnormality of the main processing unit when there is no response for a predetermined time or more. Remote monitoring device