JP2015099414A - Telemeter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a telemeter device capable of accumulating sufficient data amounts before and after the occurrence of the abnormality of data indicating the state of site equipment collected from the site equipment.SOLUTION: The process measurement data of site equipment and a contact signal 4 indicating the state of the site equipment are input by a data input part by high speed sampling, and the input data are transmitted via a communication line 5 to central monitoring equipment 2 by a communication sampling part 18 and a communication control part 19a, and stored in a normal storage area 15a. The presence/absence of the bit change of the contact signal 4 is verified by a data verification part 12, and when the normal storage area 15a becomes full, the data stored in the normal storage area 15a are moved to and stored in a saving area (2) 15d with large capacity with the bit change as a trigger, and the data of the saving area (2) 15d are transmitted to the central monitoring equipment 2 in response to a request from the central monitoring equipment 2.

Description

  The present invention relates to a telemeter device that acquires data on the site of an industrial plant or a public plant and transmits the data to a central monitoring facility using a communication line.

For example, in the conventional process monitoring system disclosed in Patent Document 1, a controller collects process measurement data for displaying trend data processed by an operator's console and transmits it in response to a request from the operator's console. .
In Patent Literature 1, the controller accumulates collected data in a FIFO (First-In First-Out) buffer, for example, for 600 seconds. When upper / lower limits and change rate are set for process data and an error is detected, a delay timer is activated by the error detection signal, and the 600-second data in the FIFO buffer is automatically stored after a certain time from the process error. It is saved in the accumulation buffer. That is, according to the setting of the delay timer, data of 600 seconds before and after the occurrence of the abnormality is stored in the accumulation buffer. For this abnormality detection, upper and lower limits and a change rate are set for the process data to detect the abnormality.
When the operator's console operator displays the corresponding instrument and commands the display of trend data, the accumulation buffer is selected and the trend graph before and after the point of occurrence of the abnormality is displayed. .

JP-A-5-79858 (pages 4-6, FIG. 1)

In the conventional process monitoring system, the process measurement data that is constantly input is the target of accumulation, and only the same amount of process measurement data as the FIFO buffer is saved when an abnormality occurs. Therefore, the trend based on this saved process measurement data There was a problem that only a graph could be displayed.
In addition, since the trigger for starting the process measurement data in the FIFO buffer to be stored in the accumulation buffer is when an abnormality is detected in the process measurement data, the data cannot be saved under conditions other than the abnormality in the process measurement data.
In addition, since the data of a specific time before and after the occurrence of the abnormality is stored, only the data within the abnormality occurrence and the specific time can be displayed in the trend graph, so the details of the process change before the specific time when the event occurs is unknown.

  The present invention has been made to solve the above-described problems, and is to obtain a telemeter device capable of accumulating a sufficient amount of data before and after the occurrence of abnormality of data indicating the state of the field equipment collected from the field equipment. Objective.

  The telemeter device according to the present invention is a telemeter device that collects field facility data and transmits it to a central monitoring facility at regular intervals via a communication line, and shows the process measurement data of the field facility and the state of the field facility. An input unit that inputs bit data at a cycle faster than a fixed cycle, a constant storage area that stores data input by this input unit, and saves data in the constant storage area when this constant storage area is full of data The first save area, the verification unit that verifies the bit change of the bit data input to the input unit, and when the bit change is verified by this verification unit, the data stored in the storage area is always moved. The second evacuation area having a larger capacity than the first evacuation area to be saved is stored in the first evacuation area. Is moved from the second save area, the data stored in the second save area is to be sent to the central monitoring facility on demand.

  According to this invention, it is a telemeter device that collects field facility data and transmits the data to the central monitoring facility at regular intervals via a communication line, and includes process measurement data of the field facility and bit data indicating the state of the field facility. An input unit that inputs a cycle that is faster than a fixed cycle, a constant storage area that stores data input by the input unit, and a data that is stored in the constant storage area when this constant storage area is full of data Evacuation area, verification unit that verifies the bit change of the bit data input to the input unit, and when the bit change is verified by this verification unit, the data stored in the storage area is always moved and stored The second evacuation area has a larger capacity than the first evacuation area, and the data saved in the first evacuation area is moved to the second evacuation area by the user's operation. The data stored in the second evacuation area is sent to the central monitoring facility when requested, so a sufficient amount of data before and after the occurrence of the bit data indicating the state of the field facility collected from the field facility Can be stored for analysis at the central monitoring facility.

It is a block diagram which shows the telemeter apparatus by Embodiment 1- Embodiment 3 of this invention. It is a block diagram which shows the telemeter apparatus by Embodiment 4 of this invention. It is a block diagram which shows the telemeter apparatus by Embodiment 5 of this invention. It is a block diagram which shows the telemeter apparatus by Embodiment 6 of this invention.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a telemeter device according to Embodiment 1 of the present invention.
In FIG. 1, the on-site telemeter device 1 connected to the central monitoring facility 2 via the communication line 5 is configured as follows.
The process measurement input unit 11a is connected to the sensor 3 that converts process measurement data of field equipment into voltage or current, and inputs the process measurement data at a high-speed sampling period, and performs A / D conversion. The failure / status bit input unit 11b inputs the contact signal 4 of the field equipment that outputs the bit data indicating the failure or condition of the site at a high-speed sampling cycle. The process measurement input unit 11a and the failure / status bit input unit 11b constitute a data input unit (input unit).

The data verification unit 12 (verification unit) performs an abnormality test on the process measurement data and the bit data indicating a failure or state. For process measurement data, upper and lower limit tests and change rate tests are performed, and for failure / status bit data (contact signal), bit changes are tested.
The communication sampling unit 18 samples the process measurement data and the bit data of the data verification unit 12 at the same timing in a fixed cycle, and sends them to the central monitoring facility 2 by the communication control unit 19a.
The communication control unit 19 a sends these data to the communication control unit 20 of the central monitoring facility 2 via the communication line 5.
The sampling cycle when the data input unit inputs process measurement data and bit data indicating a failure or state is significantly faster than the cycle transmitted by the communication control unit 19a to the central monitoring facility 2.

The constant storage area 15a is full by adding the time generated by the time generation unit 15b to the process measurement data branched at the data branch point 13 on the output side of the data verification unit 12 and the bit data indicating the failure or state. Store until. The data transmission cycle at this time is performed in the same cycle as the input cycle of the data input unit.
The evacuation area (1) 15c (first evacuation area) moves data when the constant storage area 15a is full, and overwrites and saves the previous data.

The evacuation area (2) 15d (second evacuation area) is an area where the data verification unit 12 detects an abnormality in the bit data transferred from the failure / status bit input unit 11b, and uses this as a trigger for a constant storage area. The data 15a is moved and saved. For this reason, the evacuation area (2) 15d has a very large capacity.
The data stored in the evacuation area (2) 15d is transmitted to the central monitoring facility 2 by the data transmission request operation of the central monitoring facility 2.
In addition, the data in the save area (1) 15c can be forcibly moved to the save area (2) 15d by an arbitrary operation.

The central monitoring facility 2 is configured as follows.
The communication control unit 20 communicates with the communication control unit 19a via the communication line 5. The data processing device 21 displays the data received by the communication control unit 20 on the data display unit 22 and performs processing for printing by the form printer 23.

Next, the operation will be described.
The on-site telemeter device 1 uses the process measurement input unit 11a for the process measurement data of the sensor 3 and the bit data (contact signal 4) indicating the failure or state of the on-site equipment at the failure / status bit input unit 11b for a high-speed sampling cycle. Take in by.
The fetched data is tested by the data verification unit 12 to see if there is a bit change in the failure / state bit data (contact signal) set and registered in advance.
When there is no bit change of the failure / status bit data registered in advance, the data is always stored in the storage area 15a, and when the constant storage area 15a is full, the data is moved to the save area (1) 15c.
At this time, the data in the save area (1) 15c that has been moved and saved the previous time is overwritten, and newly fetched data is started to be saved in the constant storage area 15a.

When a bit change occurs in the failure / status bit data (contact signal) set and registered in advance in the verification of the data verification unit 12, the process measurement data and the failure / status bit data are continuously stored in the storage area 15a. When the constant storage area 15a becomes full, the data in the constant storage area 15a is moved to the save area (2) 15d, and the next captured data starts to be stored in the constant storage area 15a.
That is, the data before and after the occurrence of the bit change can be saved from the constant storage area 15a to the save area (2) 15d.
The data moved to the save area (2) 15d and stored is transmitted to the central monitoring facility 2 through the communication control unit 19a by a data transmission request operation from the central monitoring facility 2.

  Regardless of whether or not there is a bit change in the failure / state bit data registered in advance, the data divided at the data branch point 13 is always sent to the central monitoring facility 2 via the communication sampling unit 18 and the communication control unit 19a. Is transmitted.

According to the first embodiment, the process measurement data sampled at high speed and the failure / status bit data are always stored in the storage area 15a, and the failure registered in advance by the data verification unit 12 is performed. When a bit change of the status bit data occurs, this is used as a trigger, and the saved data in the constant storage area 15a is moved to the save area (2) 15d and saved, so this bit change is used as a trigger. By adding operations, not only after an earthquake occurs, it is possible to store very detailed changes in process measurement data such as flow rate and seismic intensity before the occurrence and failure / status bit data.
Further, by transmitting the stored data to the central monitoring facility 2, the central monitoring facility 2 can analyze the data before the occurrence of the event.

In addition, process measurement data from the sensor and bit data indicating failure or status can be input at high speed, and the data accumulated in the evacuation area (2) 15d can be analyzed by the central monitoring facility 2, so it is transmitted via a communication line. It is possible to analyze data changes with a period that is much shorter than the generated data, and to analyze the mechanism of occurrence of abnormality in more detail.
Furthermore, if the area for storing data is limited to the constant storage area 15a only, the data before being overwritten becomes important when an abnormality occurs immediately after the constant storage area 15a becomes full and begins to be overwritten. Therefore, by temporarily moving the data to the retreat area (1) 15c in another place, it is possible to keep the data until the next constant storage area 15a becomes full. ) It is possible to take out and analyze the data of 15c and the constant storage area 15a.

Embodiment 2. FIG.
In the first embodiment, the occurrence of a bit change in the failure / status bit data to be verified by the data verification unit 12 is used as a trigger to move from the storage area 15a to the save area (2) 15d. This is triggered by the occurrence of deviation in the measurement data.
As a result, it is possible to store detailed changes from immediately before the flow rate or pressure due to water leakage or the like suddenly changes, and it is possible to perform more detailed analysis of water leakage or the like.

Embodiment 3 FIG.
In the first embodiment, the bit change of the failure / state bit data is used as a trigger, and in the second embodiment, the occurrence of a deviation in the process measurement data is used as a trigger to move from the constant storage area 15a to the save area (2) 15d. In the third embodiment, the data verification unit 12 combines the bit change of the first embodiment and the deviation occurrence of the second embodiment as a trigger.
This makes it possible to save data not only when there is a failure / status bit data bit change from field facilities such as an earthquake, but also when there is a flow rate or pressure deviation when there is no external cause such as an earthquake.

Embodiment 4 FIG.
FIG. 2 is a block diagram showing a telemeter device according to Embodiment 4 of the present invention.
2, 1-5, 11a, 11b, 12, 13, 15a-15d, 19a, 20-23 are the same as those in FIG. In FIG. 2, the on-site telemeter device 1 is provided with an external storage unit 16 in which an external memory medium is mounted, a function switch 17a for moving data in the save area (1) 15c to the save area (2) 15d, and a save area (2) A switch 17b is provided for moving 15d data to the external storage unit 16 and storing it.

In the field-side telemeter device 1 according to the fourth embodiment, the function switch 17a that moves the data in the save area (1) 15c to the save area (2) 15d and the data in the save area (2) 15d are stored in the external storage unit 16. A switch 17b for moving to and storing the inserted CompactFlash (registered trademark) card or SD card is provided.
Data can be moved to an external memory medium such as a compact flash card or an SD card mounted on the external storage unit 16 by an arbitrary operation of these switches on the field side telemeter device 1 main body.

According to the fourth embodiment, it is possible to transmit a data request operation from the central monitoring facility 2 or data of the on-site telemeter device 1 when the communication line 5 between the site-side telemeter device 1 and the central monitoring facility 2 is abnormal. Even when it is not possible, it is possible to take out data while the on-site telemeter device 1 is operating.
Also, the same as when data is transmitted from the central monitoring facility 2 by moving the data in the evacuation area (2) 15d to a compact flash card or SD card of the external storage unit 16 in the body of the telemeter device 1 on the site side and taking it home. Thus, data analysis can be performed.

Embodiment 5 FIG.
FIG. 3 is a block diagram showing a telemeter device according to Embodiment 5 of the present invention.
3, 1-5, 11a, 11b, 12, 13, 15a-15d, 16, 17a, 17b, 19a, 20-23 are the same as those in FIG. In FIG. 3, the on-site telemeter device 1 is provided with a wireless communication unit 19b using a wireless LAN or infrared rays to enable wireless communication with the personal computer 30.

In the fourth embodiment, the data in the save area (1) 15c is moved to the save area (2) 15d by operating the switch on the body of the telemeter device 1 on the site side, and the data in the save area (2) 15d is externally saved. The compact flash card or the SD card inserted in the unit 16 is moved and stored, but in the fifth embodiment, by adding the wireless communication unit 19b to the site-side telemeter device 1, the site-side telemeter device 1 main body It is possible to move and retrieve data by operating the wirelessly connected personal computer 30 without directly operating.
For example, even when the site-side telemeter device 1 is installed in a utility pole or underground manhole, data can be received and retrieved wirelessly without touching the site-side telemeter device 1 itself.
Here, the wireless is a wireless LAN, a specific low power wireless, a low power wireless, or a communication device using infrared rays.

  According to the fifth embodiment, the on-site telemeter device 1 is provided with the wireless communication unit 19b so that it can communicate wirelessly with the personal computer 30, so that the operation of the personal computer 30 without operating the on-site telemeter device 1 main body, Data can be moved and retrieved.

Embodiment 6 FIG.
FIG. 4 is a block diagram showing a telemeter device according to Embodiment 6 of the present invention.
In FIG. 4, 1-5, 11a, 11b, 12, 13, 15a-15d, 16, 17a, 17b, 19a, 19b, 20-23, and 30 are the same as those in FIG. In FIG. 4, the on-site telemeter device 1 is provided with a battery 10b for operating during a power failure and a rectifier 10a for charging the battery 10b during commercial power reception.

In the sixth embodiment, the on-site telemeter device 1 of the fifth embodiment is equipped with a battery 10b that can operate even during a power failure.
As a result, the on-site telemeter device 1 can capture process measurement data and failure / status bit data even if a power failure occurs, and can store and retrieve data.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

1 on-site telemeter device, 2 central monitoring equipment, 3 sensors, 4 contact signals,
5 communication line, 10a rectifier, 10b battery, 11a process measurement input unit,
11b Fault / status bit input section, 12 data verification section, 13 data branch point,
15a constant storage area, 15b time generation unit, 15c evacuation area (1),
15d evacuation area (2), 16 external storage unit, 17a function switch, 17b switch,
18 communication sampling unit, 19a communication control unit, 19b wireless communication unit,
20 communication control unit, 21 data processing device, 22 data display unit, 23 form printer, 30 personal computer.

Claims (7)

A telemeter device that collects on-site equipment data and transmits it to the central monitoring equipment at regular intervals via a communication line,
An input unit for inputting the process measurement data of the on-site equipment and the bit data indicating the state of the on-site equipment at a cycle faster than the fixed cycle,
A constant storage area for storing data input by this input unit,
A first evacuation area for storing the data in the permanent storage area when the permanent storage area is full of the data;
A test unit for testing a bit change of the bit data input to the input unit;
And when the bit change is verified by the verification unit, the data stored in the always-stored area is moved and stored, and a second save area having a larger capacity than the first save area is provided,
The data stored in the first evacuation area is moved to the second evacuation area by a user operation,
The telemeter device, wherein the data stored in the second evacuation area is transmitted to the central monitoring facility in response to a request. The verification unit verifies whether a deviation exceeding a specific value occurs in the process measurement data,
2. The data stored in the constant storage area is moved to a second evacuation area when a deviation greater than a specific value occurs in the process measurement data in the verification by the verification unit. The telemeter device described. The verification unit verifies whether a deviation exceeding a specific value occurs in the process measurement data,
The data stored in the constant storage area is moved to the second storage area on the condition that a deviation exceeding a specific value occurs in the process measurement data and the bit change of the bit data. The telemeter device according to claim 1. An external storage unit equipped with an external storage medium for storing the data in the second evacuation area is provided.
The telemeter device according to any one of claims 1 to 3, wherein the data of the second evacuation area is moved and stored in the external storage unit by a user operation. Provided with a wireless communication unit that communicates with external devices wirelessly,
5. The telemeter device according to claim 4, wherein a user operation for moving data in the second save area to the external storage unit is performed by the external device. Provided with a wireless communication unit that communicates with external devices wirelessly,
5. The user operation for moving data stored in the first save area to the second save area is performed by the external device. 6. Telemeter equipment.   The telemeter device according to any one of claims 1 to 6, further comprising a battery for supplying power during a power failure.

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