JP5316331B2 - Remote station equipment for remote monitoring equipment - Google Patents

Description

  The present invention relates to a slave station device of a remote monitoring facility, and more particularly, to a slave station device of a remote monitoring facility for remotely monitoring and controlling a site in a gas supply facility.

  City gas produced in the gas production factory is supplied from the factory to the end user through the gas pipeline network. This gas pipeline is classified into high pressure to low pressure, and the pressure is gradually reduced in the middle of the transportation route of the gas pipeline and supplied to the end user. Strict safety management is required in gas pipelines where flammable gas flows. For this reason, a large number of monitoring facilities are installed at remote locations to measure and record the occurrence of gas leakage in the middle of the gas pipeline, and the gas state such as gas pressure and flow rate.

  Since many such gas pipeline monitoring facilities are installed over a wide area, it is difficult for the person in charge to visit frequently to check. Therefore, a telemeter telecontrol device is known as a system for remotely monitoring such a monitoring facility. As this telemeter telecontrol device, for example, a remote monitoring system for a wastewater treatment facility as disclosed in Japanese Patent No. 2815568 has been proposed. This system remotely monitors a wastewater treatment facility, which is a slave station distributed in a remote location, at the master station.

Japanese Patent No. 2815568

  In the above-mentioned conventional telemeter telecontrol system, the functions to be implemented differ for each slave station, so it is necessary to partially divert the past product design or newly design each time according to the facilities of each slave station. there were. For this reason, there is a problem in that quality varies, and it takes time for design and confirmation tests, resulting in a long manufacturing process.

  The present invention has been made to solve the above-described problems, and provides a slave station device of a remote monitoring facility capable of improving the product quality of the slave station facility and shortening the production period. Objective.

In order to achieve the above object, the first invention provides
In the slave station device of the remote monitoring facility used to monitor and control the gas supply facility,
A communication module that performs data communication with the master station device;
A main function module that controls the overall function of the slave station device;
A module group in which individual functions are modularized and stored ,
A mounting state of each function stored in the module group includes a table registered in association with a function necessary for the slave station device,
The main function module instructs the module group to execute a function registered as installed in the table based on information from the table, the communication module, and the module group. To do.

  According to the slave station apparatus of the first invention, since it is possible to set only necessary function modules in combination, the design period can be shortened and the design quality can be achieved even when the slave station apparatus has different facilities. Can be stabilized.

It is a figure which shows the structure of the pipeline system | strain of the sub_station | mobile_unit apparatus of the telemeter tele-control system in gas supply equipment. It is a figure which shows the structure of the utility related facility of a slave station apparatus. It is a figure for demonstrating in detail the system configuration | structure of a slave station apparatus. It is a figure which shows the structural example of the table set for every function. It is a figure which shows the structural example of the table set for every valve | bulb classification. It is a flowchart of a routine executed in the present embodiment.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the element which is common in each figure, and the overlapping description is abbreviate | omitted. The present invention is not limited to the following embodiments.

Embodiment.
[Configuration of the embodiment]
FIG. 1 is a diagram showing a configuration of a pipeline system of a slave station device of a telemeter telecontrol system in a gas supply facility. As shown in this figure, the gas supply facility includes a main line 10. Gas supplied from a gas supply source (not shown) circulates in the trunk line 10.

  A branch line 12 branched from the main line 10 is introduced into the slave station device. In the middle of the branch line 12, an emergency shut-off valve 14 for shutting off the inflow of gas to the branch line 12 in an emergency is arranged. A governor device 16 for reducing the gas pressure on the output side to a predetermined pressure is disposed on the branch line 12 downstream of the emergency shutoff valve 14.

  A pressure transmitter 18, a differential pressure transmitter 20, and a temperature transmitter 22 are disposed on the branch line 12 downstream of the governor device 16. The pressure transmitter 18 is a device that detects and transmits the pressure of the gas flowing in the branch line 12. The differential pressure transmitter 20 is a device that detects and transmits a differential pressure for calculating the flow rate of the gas flowing in the branch line 12. Furthermore, the temperature transmitter 22 is a device that detects and transmits the temperature of the gas flowing in the branch line 12. In a place where the slave station device is located, the gas flowing in from the main line 10 is decompressed by the governor device 16 and supplied to the user.

  Next, utility related equipment of the slave station device will be described. FIG. 2 is a diagram illustrating a configuration of utility-related equipment of the slave station device. As shown in this figure, the slave station device 30 of the telemeter telecontrol system includes a display unit 32 for indicating the state of equipment such as a gas pressure value, a gas temperature, a valve open / close state, an alarm state, and a valve operation or reset operation. Switches 34 for performing each are mounted. The slave station device 30 is connected to various devices for knowing the surrounding environment. These devices include, for example, a seismometer 36 for detecting the occurrence of an earthquake, a gas detector 38 for detecting gas leakage in a room where the governor device 16 described above is installed, and a river or pond. Is connected to a water level meter 40 for detecting whether or not the slave station device 30 is submerged. In addition, the slave station device 30 is equipped with a communication facility 42 for performing communication with the monitoring center that is the master station.

[Features of the embodiment]
Next, features of the present embodiment will be described in detail with reference to FIGS. 3 to 5. FIG. 3 is a diagram for explaining the system configuration of the slave station device 30 in detail. As shown in this figure, the slave station device 30 includes a communication processing function unit 44 for performing communication with the monitoring center using the communication facility 42, a module group 46 constituting each function described later, and the communication processing function. A main function unit 48 for exchanging data with the unit 44 and with the module group 46 and issuing an instruction, and a table 50 for referring from the main function unit 48. ing. Hereinafter, the function of each functional unit will be described in detail.

  In the module group 46, various functions executed in the slave station device 30 are modularized and stored. Various functions of the module group 46 include, for example, a seismic shut-off function 461 for automatically shutting off the valve after the occurrence of an earthquake, and a gas leak for operating a ventilation fan when gas leaks to discharge gas in the room. Function 462, a water level detection function 463 for shutting off the power supply to avoid a short circuit before the slave station device 30 is immersed in water in a slave station installed near a water source such as a river or a pond. Gas pressure monitoring function 464 for periodically monitoring the gas pressure stipulated by law, valve control function 465 for remotely controlling the valve from the monitoring center, analog input data to prevent malfunction due to noise I / O processing function 466 for performing a moving average process or a cut process for ignoring fluctuations in the vicinity of 0, and JIS M 8019-19 Based on the first natural gas metering method, such as gas flow rate calculation function 467 to accurately count the amount of gas customer supply it is housed.

  On the other hand, the table 50 is a list of mounted / unmounted states for each device and each function. FIG. 4 is a diagram illustrating a configuration example of a table set for each function. As shown in this figure, in the table 50, a mounting state, a set value, and a target device are set in a table for each function. More specifically, for example, in the case of the seismic cutoff function, a measured value (GAL value or SI value) of a seismometer for the seismic cutoff process to function is defined as a set value. Similarly, for the gas leakage function, the gas concentration detection level is set in the table 50 for each gas detector. Further, similarly for the water level detection function, the set value of the water level is set in the table 50. For the gas pressure monitoring function, the set pressure value of the upper limit pressure is set in the table 50 for each gas line.

  FIG. 5 is a diagram illustrating a configuration example of a table set for each valve type. In the table in FIG. 5, whether or not a valve is mounted, whether or not it is subject to automatic control, and the like are set. More specifically, the valve type, unit number as each valve mounting position, slot number, and channel number, mounting presence / absence, device name, whether or not to be automatically controlled, and if it is to be automatically controlled, its control A code is set in the table 50. The table 50 is not limited to the above two examples, and the main function unit 48 may include another table for referring to the installation state of equipment and functions.

[Specific processing of the embodiment]
Next, specific processing of the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart of specific processing executed in the main function unit 48. In the main function unit 48, mainly the following six processes are repeatedly executed.

  First, as shown in this figure, the function implementation state is confirmed (step 100). Specifically, referring to the table 50 described above, the IO mounting state and the function mounting state are confirmed.

  Next, the state of the installed equipment is stored in the memory (step 102). Here, specifically, an instruction to the IO input / output processing function 466 and the gas pressure monitoring function 464 of the module group 46 is periodically performed. As a result, the state of the installed equipment is saved in the input / memory and displayed on the display unit 32.

  Next, the stored data is transmitted to the monitoring center which is the master station (step 104). Specifically, the data stored in the memory in step 102 is transmitted from the communication processing function unit 44 to the monitoring center.

Next, the calculation of the supply gas amount is instructed (step 106). Here, specifically, data stored in step 102 is transmitted to the gas flow rate calculation function 467. In the gas flow rate calculation function 467, the supplied gas amount is calculated using the sent data.

  Next, it is determined whether or not a special event A set in advance has occurred (step 108). Examples of the special event A include occurrence of an earthquake and occurrence of equipment failure. As a result, when it is determined that the special event A has occurred, an instruction is given to the communication processing function unit 44 to notify the monitoring center (step 110). The communication processing function unit 44 immediately executes a start process to the monitoring center at the timing when the instruction is issued, separately from the data to be periodically transmitted.

  On the other hand, when it is determined that the special event A has not occurred, or after the processing of the step 110, the process proceeds to the next step, and it is determined whether or not the special event B set in advance has occurred. (Step 112). Here, specifically, as the special event B, for example, it is determined whether or not an earthquake, a gas leak, a water level rise, or the like has occurred. As a result, if it is determined that the special event B has occurred, the process proceeds to the next step to perform special processing, and an instruction is issued to the corresponding module (step 114). Specifically, an instruction is issued to the seismic sensing cutoff function 461 when an earthquake occurs, to the gas leak detection function 462 when a gas leak occurs, and to the water level detection function 463 when a water level rise occurs. Each functional module performs a special process and then transmits the result to the main function unit 48.

  As described above, since the slave station device 30 of the present embodiment can be set by combining only necessary functional modules, the design period can be shortened even when the slave station device has different facilities. In addition, the design quality can be stabilized.

  Further, in the slave station device 30 of the present embodiment, by using the table 50, it is possible to quickly refer to the presence or absence of the function or device. For this reason, even when it has different facilities and functions for each slave station device, functional design can be performed efficiently.

In the embodiment described above, the communication processing function unit 44 is the “communication module” in the first invention, the main function unit 48 is the “main function module” in the first invention, and the module group 46 is The table 50 corresponds to the “module group” in the first invention, and corresponds to the “table” in the first invention.

10 trunk line 12 branch line 14 emergency shut-off valve 16 governor device 18 pressure transmitter 20 differential pressure transmitter 22 temperature transmitter 30 slave station device 32 display unit 34 switches 36 seismometer 38 gas detector 40 water level meter 42 communication equipment 44 communication processing Function unit 46 Module group 48 Main function unit 50 Table 461 Seismic block function 462 Gas leak function 462 Gas leak detection function 463 Water level detection function 464 Gas pressure monitoring function 465 Valve control function 466 IO input / output processing function 467 Gas flow rate calculation function

Claims (1)

In the slave station device of the remote monitoring facility used to monitor and control the gas supply facility,
A communication module that performs data communication with the master station device;
A main function module that controls the overall function of the slave station device;
A module group in which individual functions are modularized and stored ,
A mounting state of each function stored in the module group includes a table registered in association with a function necessary for the slave station device,
The main function module instructs the module group to execute a function registered as installed in the table based on information from the table, the communication module, and the module group. Remote station equipment for remote monitoring equipment.

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