KR100821118B1 - Flow metering apparatus for block supervisor system - Google Patents

Abstract

A flow metering apparatus for a block system is provided to prevent loss of flow meter data at the time of a power failure or communication interruption by securing stable data management and transmission. A flow metering apparatus for a block system comprises a flow meter selection switch(32), a data memory(24), a program storage unit(26) and a controller(22). The flow meter selection switch is equipped so as to select a data structure processing program corresponding to a flow meter type. The data memory stores flow meter data measured by a flow meter(12) and transmitted to a managing server together with time information. The program storage unit maps the data structure processing program and a motion program corresponding to the flow meter type. The controller transmits inverted flow meter data to the managing server and stores time information and the inverted flow meter data in the data memory.

Description

Flow meter device for flow monitoring block system {FLOW METERING APPARATUS FOR BLOCK SUPERVISOR SYSTEM}

1 is a schematic block diagram of a flow monitoring block system according to an embodiment of the present invention;

2 is a block diagram of the flow meter data management and transmission unit in the flow meter device of FIG.

3 is a plan view of the flow meter data management and transmission of FIG. 2;

Figure 4 is a waveform diagram for explaining the comparison of wander gauge data transmission until the restart after communication disruption in the prior art and the present invention.

The present invention relates to a flow rate monitoring system, and more particularly, to a flowmeter device for water supply flow rate and drainage management in a flow rate monitoring block system.

In general, water leakage in the water supply network causes not only loss of water resources but also the need for additional pressurization equipment due to pressure loss and weakening of the soil around the leaking pipeline, making it difficult to maintain the network and causing serious economic losses. Is doing.

Accordingly, in order to maintain efficient water supply network, most of Korea has adopted a block system that monitors the flow rate of each block by dividing the area into blocks (large block, medium block, small block). . In other words, the block system divides the complexes of transport, distribution and water supply areas throughout the city into checkerboard-type blocks by elevation and terrain, so that the flow of water flows through the one-way flow and the one-way flow. Each block is divided by installing a flow meter and a hydraulic meter to monitor the water pressure and flow rate at the management station at all times to proactively cope with leakage accidents and to prevent leaks in advance so that the flow rate can be maintained. It is the way of management. Therefore, the 1% flow rate improvement is almost 100 million won in monetary value maintenance. Therefore, the improvement of flow rate is very important.

In the general flow monitoring block system, the data of the flow meters installed for each block is transmitted to the monitoring server in the monitoring station through a dedicated line and managed by the monitoring station. If the power failure or communication failure occurs, the flow meter data is lost due to the monitoring station. Has a problem in that it cannot analyze the flowmeter data during that period.

In addition, since the flowmeter installed in each flowmeter device differs depending on the product, the circuit control unit for the flowmeter data transmission needs to be equipped with a circuit and a specific program suitable for the flowmeter. My data transmission circuit could be implemented. That is, a professional technician must install the circuit for the flowmeter, and program and install the program for the flowmeter, but can perform proper test and commissioning for the flowmeter data transmission.

Accordingly, an object of the present invention is to provide a flow meter device that can be more stable and maximize data management in flow meter data management and transmission of the flow monitoring block system.

Another object of the present invention is to provide a flowmeter device that can prevent the loss of flowmeter data even in the event of power failure or communication failure in the flow monitoring block system.

In accordance with the above object, the present invention is a flow meter device for transmitting the flow meter data measured from the flow meter to the management server of the management station that manages the water pressure and flow rate by data communication through a dedicated line, the data corresponding to multiple flow meters A flowmeter selection switch provided to select a structural machining program, a data memory for storing flowmeter data measured from the flowmeter and transmitted to a management server with time information, and a data structure machining program and an operation program corresponding to a plurality of flowmeters. The program storage unit for mapping the flow rate and the data structure processing program corresponding to the flow meter selected and set by the flow meter selection switch in the program storage unit to drive the data measured from the flow meter to be compatible with the management server flow meter Format to data and recall And a control unit for transmitting the converted flowmeter data to the management server and simultaneously storing the converted flowmeter data in the data memory.

In another aspect, the present invention is characterized in that the control unit reads the corresponding flow meter data stored in the data memory and retransmits it to the management server when the control server requests retransmission of the wander meter data together with the data loss time interval information.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of a flow monitoring block system 10 according to an exemplary embodiment of the present invention, in which flow units 14 installed for each block are dedicated to transfer and management of a flow meter 12 and flow meter data for flow measurement. It includes a flow meter data management and transmission unit 20 to perform.

The flow meter data management and transmission unit 20 of the flow apparatus 14 manages the water pressure and the flow rate through the data modem 22 and the dedicated line 18 by using the flow meter data measured from the flow meter 12 ( 16), so that the management server 16 can always monitor the flow rate and water pressure of each block.

Furthermore, the flowmeter data management and transmission unit 20 converts the flowmeter data from the flowmeter 12 installed in the flow apparatus 14 into a data format compatible with the management server 16 and transmits the data to the management server 16. In addition, the transmission flow meter data is stored in the internal storage unit along with time information in order to prepare for a communication failure.

FIG. 2 is a block diagram of the flow meter data management and transmission unit 20 in the flow meter apparatus 14 of FIG. 1, and FIG. 3 is a plan view of the flow meter data management and transmission unit 20 of FIG. 2.

Referring to FIG. 2, the flowmeter data management and transmission unit 20 in the flowmeter device 14 includes a control unit 22, a data memory 24, a program ROM 26, an operation display unit 28, and a key input unit 30. , Flowmeter selector switch 32, analog input unit 34, Ethernet interface 36, digital input / output unit 38, wireless communication unit 44, communication register 46 and a plurality of serial data communication units 48a, 48b, 48c ), Including The serial data communication units 48a, 48b, and 48c may be implemented by, for example, RS-232C or RS-422 serial data communication.

According to an embodiment of the present invention, a flowmeter 12 is connected to the communication port COM1 of the serial data communication unit # 1 (48a), and a notebook computer which is an example of an external portable terminal device is connected to the communication port COM2 of the serial data communication unit # 2 (48b). 23 is connected, and is connected to the data modem 22 to the communication port COM3 of the serial data communication unit # 3 (48c). If the notebook computer 23 is connected to the communication port COM2 of the serial data communication unit # 2 (48b), the serial data communication unit # 2 (48b) is the flow meter data stored in the data memory 24 under the control of the control unit 22. Interface to be downloaded to the notebook computer (23).

The flowmeter data management and transmission unit 20 is mounted in the flowmeter device 14 in the form of a control box, the planar structure of which is shown in FIG. The flowmeter data management and transmission unit 20 includes a digital input terminal 52 and a digital output terminal 54 of various terminals, that is, a plurality of ports, for interfacing with the outside, and a power supply terminal 56. do.

The digital input terminal 52 and the digital output terminal 54 are provided in the digital input / output unit 38 of FIG. 2, and a plurality of ports of the digital input terminal 52 have a flowmeter 12 in the flow apparatus 14. The immersion detection unit 40 for detecting whether the immersion of the water and the drain pump state detection unit 42 for detecting the state of the drain pump in the flow apparatus 14 is connected. The control unit 22 has a clock generator 39 for transmitting parallel data through the digital input / output unit 38.

The serial ports COM1, 2, and 3 of the serial data communication units 48a, 48b, and 48c are provided on the upper surface of the control box constituting the flowmeter data management and transmission unit 20, and the Ethernet interface 36 for Ethernet communication. LAN port 62 is provided for, the keyboard port 60 for connecting with the keyboard corresponding to the key input unit 30 is provided.

In addition, a flowmeter selection switch 32 and an operation display unit 28 are provided on the upper surface of the control box of the flowmeter data management and transmission unit 20.

The flowmeter selection switch 32 has a plurality of switch buttons for setting the flowmeter selection, and serves as a switch for selecting a data structure processing program suitable for the flowmeter type among various flowmeter types. And the operation display unit 28 is a display unit for displaying the operation for the power supply, flow meter communication, telecommunications, memory, etc. under the control of the control unit 22, it may be implemented as an LED lamp displayed in normal green, fault red, and It can also be implemented as an LCD panel capable of displaying images.

Referring again to FIG. 2, the flowmeter data management and transmission unit 20 includes a controller 22, a data memory 24, and a program ROM 26 for overall control of flowmeter data management and transmission.

According to an embodiment of the present invention, the data memory 24 stores the flow meter data measured by the flow meter 12 and transmitted to the management server 16 under the control of the controller 22 together with time information, and the program ROM 26. Maps data structure machining program and operation program corresponding to each type of flow meter.

In addition, the control unit 22 reads and drives the data structure processing program and the operation program corresponding to the type of flowmeter selected and set by the manager through the flowmeter selection switch 32 according to an embodiment of the present invention. The data measured from the flowmeter 12 is processed and converted into flowmeter data compatible with the management server 16. In addition, the conversion flowmeter data is transmitted to the management server 16 through the communication register 46, the serial data communication unit # 3 (48c), the data modem 22, the dedicated line 18. At the same time, the flow meter data is stored in the data memory 24 together with the time information.

In addition, when the control unit 22 requests retransmission of the wander meter data together with the data loss time interval information from the management server 16, the control unit 22 reads the corresponding flow meter data stored in the data memory 24 and retransmits it to the management server 16.

The present invention flow meter data management and transmission unit 20 includes a wireless communication unit 44 as needed. The wireless communication unit 44 wirelessly transmits the flowmeter data measured under the control of the control unit 22 or the flowmeter data stored in the data memory 24 to the management server 16 of the management station. In this case, the frequency band is preferably a megahertz band, for example, a 424 MHz band.

On the basis of the above configuration will be described in detail the operation of the present invention in detail.

In each block divided in the block system for monitoring the flow rate for each block, at least one flowmeter is installed, each flowmeter 12 is included in the flowmeter device (14).

The flowmeter 12 of the flowmeter apparatus 14 is various in its kind according to a measuring method, a data coding method, etc. For example, there are ultrasonic, electronic, pad, gear, venturi, and the like in the measurement method of the flowmeter 12. The data coding methods include ASCII, bit data, hexa value, word method, and the like.

In the embodiment of the present invention, the flowmeter data from various types of flowmeters 12 are processed and converted into, for example, a double word in a data format compatible with the management server 16.

When the administrator checks the type of the flowmeter 12 installed in the flowmeter device 14 and selects one switch among the plurality of switches in the flowmeter selector switch 32, the control unit 22 selects a program ROM ( A data structure machining program and an operation program corresponding to the type of the flowmeter 12 installed in 26) are set as the drive program.

Thereafter, the flowmeter data measured from the flowmeter 12 is processed and converted into a doubleword flowmeter data based on the data structure processing program of the controller 22, and the flowmeter data of the doubleword is communicated with the communication register 46 and serial data. It is transmitted to the management server 16 via the communication unit # 3 (48c), the data modem 22, and the dedicated line (18).

In this case, the control unit 22 stores the flowmeter data of the double word temporarily stored in the communication register 46 together with the time information in the data memory 24. The data memory 24 is preferably implemented to store data for about 3 months. Since data of about 3 months or more is stored, the old data is deleted from the old data.

On the other hand, a communication breakdown may occur between the flowmeter device 14 and the management server 16 of the management station. In this case, all of the flowmeter data during the communication breakdown period is lost. However, in the exemplary embodiment of the present invention, the flowmeter data during the communication disconnection period can be retransmitted from the flowmeter device 14 again.

Hereinafter, this will be described in more detail with reference to FIG. 4. 4 is a waveform diagram illustrating a comparison of wander gauge data transmission until the resumption after a communication failure in the prior art and the present invention.

The flowmeter apparatus of the prior art is implemented to transmit only the flowmeter data measured by the flowmeter. Therefore, when a power failure or a communication failure occurs in the dedicated line or the flowmeter device, as shown by the dotted line circle indicated by reference numeral 70 in FIG. 4A, data loss occurs during the time t1 to t2 where communication is lost. A failure occurs when analyzing data.

However, in the embodiment of the present invention, the flow meter data management and transmission unit such that there is no data loss even during the communication disconnection time (t1 to t2) as shown by the dotted line circle indicated by reference numeral "80" in FIG. 20) the control unit 22 stores the transmission flow meter data in the data memory (24 of FIG. 2), and transmits the stored data to the management server 16 at the time of resumption of communication due to the failure recovery, thereby performing continuous data analysis at the management station. To do it.

In short, when communication is resumed by failover, the management server 16 of the management station confirms the communication resumption, and flows along with the data loss time interval information to the flowmeter data management and transmission unit 20 of the flowmeter device 14. You will be asked to resend the data.

The control unit 22 of the wandering system data management and transmission unit 20 receives a request for retransmission of the wandering system data together with the data loss time interval information from the management server 16, and uses the data loss time interval information. Read the corresponding flow meter data stored in) and resend to the management server (16). As a result, the Bureau can continue to analyze wandering data.

In addition, the embodiment of the present invention is implemented to download the data stored in the data memory 24 is connected to the flow meter data management and transmission unit 20 using a notebook computer (23 of Figure 1) if the failure is prolonged. The wireless communication unit 44 is mounted to implement communication without using an existing communication line as necessary.

As described above, the present invention implements a dedicated flowmeter data management and transmission unit, thereby maximizing stability and data management, and provides a system cost reduction and convenience of construction by utilizing a dedicated flowmeter data management and transmission device. In addition, management rationalization and flow rate data using the flow meter data management and transmission unit of the present invention can be provided with more efficient analysis (flow rate improvement, accurate real-time flow rate data) data.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

As described above, the present invention can be more stable and maximize data management in the flow meter data management and transmission of the flow monitoring block system, and the flow monitoring data can be prevented from losing the flow meter data even in the event of power failure or communication failure. It has the advantage.

Claims (4)

A flowmeter apparatus for transmitting flowmeter data measured from a flowmeter to a management server of a management station that manages water pressure and flow rate through data communication through a dedicated line, A flowmeter selection switch provided for selecting data structure processing programs corresponding to the flowmeter type; A data memory for storing the flow meter data measured by the flow meter and transmitted to the management server together with time information; A program storage unit for mapping data structure processing programs and operation programs corresponding to each type of flow meter; The data structure processing program corresponding to the type of flowmeter selected and set by the flowmeter selection switch is selectively driven in the program storage unit to process data measured from the flowmeter to format the flowmeter data compatible with the management server and convert the flowmeter A flow meter device for a flow monitoring block system, comprising: a control unit for transmitting data to a management server and storing the data together with time information. The flow monitoring of claim 1, wherein the control unit reads the corresponding flow meter data stored in the data memory and retransmits it to the management server when the control server requests retransmission of the wander meter data together with the data loss time interval information. Flowmeter device for block system. The flow meter apparatus according to claim 1 or 2, further comprising a wireless communication unit for wirelessly transmitting the wander meter data to a management server of a management station under the control of the control unit. The flow monitoring block system according to claim 1 or 2, further comprising a data communication unit for interfacing the flow meter data stored in the data memory unit to the external portable terminal apparatus under the control of the control unit. Flow meter device.

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