KR101310182B1 - System for managing fan filter unit using the power line communication and method therefor - Google Patents

Abstract

PURPOSE: System and method thereof managing a fan filter unit using power line communication are provided to monitor a fan filter unit by performing power line communication in a channel multiplexing method by group unit. CONSTITUTION: A management server (120) receives information on more than two fan filter units being collected and managed by group unit from a gateway. The management server monitors the fan filter unit using the received information. The gateway transmits a read request message with a predetermined time period to a modem through power line communication in a channel multiplexing method. The gateway receives more than two fan filter unit information collected by group unit in the modem. The gateway transmits the received fan filter unit information to the management server. [Reference numerals] (120) Management server; (130) Main distribution box; (132) First circuit breaker; (134) Second circuit breaker; (140) First gateway; (142) 1-1 modem; (144) 1-1 blocking filter; (150) Second gateway; (152) 2-1 modem; (154) 2-1 blocking filter; (161,162,171,172) FFU controller; (AA) Power line; (BB) Three-phase 220V/60Hz

Description

System for managing fan filter unit using the power line communication and method therefor}

The present invention relates to a system and method for managing a fan filter unit using power line communication, and to classify the fan filter unit into groups, and to monitor the fan filter unit using power line communication in a channel multiplexing manner in groups. It is about.

The present invention is derived from the research conducted as part of the technology innovation development project of the Small and Medium Business Administration and Korea Industrial Technology Evaluation and Management Agency [Task Management Number: S2042685, Task name: Development of PLC communication-based FFU control system for semiconductor plants].

In general, the fan filter unit (Fan) is installed in a clean room for filtration of air of a production line such as a semiconductor, a thin film transistor liquid crystal display (TFT LCD), which are extremely sensitive to dust, to maintain internal air at a certain level. Filter Unit) is used.

In addition, the monitoring control system for managing this is a system for performing on / off control of the fan filter unit, speed control (high speed, normal, low speed), abnormal state monitoring during operation, and the like.

In line with global energy efficiency trends, the system is also the most important choice in determining the fan filter unit's motor and control system.

The currently applied fan filter unit supervisory control system constructs a communication system using the RS-485 serial communication method.

In the above communication method, in order to manage a fan filter unit in which tens of thousands are installed, a separate communication-related construction is performed to install a communication line, so that monitoring and control of all installed fan filter units is possible.

In addition, in consideration of communication noise, a separate work that requires separate installation of power lines and communication lines occurs.

In addition, because of the large quantity, various noises through various paths interfere with the communication, which degrades the communication reliability of the entire monitoring and control system.

The problem caused by separation of the power line and the communication line can be solved by using a method of communicating through the power line.

Description of the system for controlling the fan filter unit using conventional power line communication has been described in Japanese Patent Laid-Open No. P2009-124462A.

A system for controlling a fan filter unit using conventional power line communication controls a fan filter unit by communicating through a power line, but since the fan filter unit communicates in a one-to-one manner with the fan filter unit in a polling manner to control the fan filter unit, The greater the length, the longer the monitoring cycle, and the longer it takes to control the fan filter unit.

Accordingly, there is a need for a method capable of monitoring and controlling the fan filter unit at a faster management cycle and controlling the same even with power line communication.

Japanese Laid-Open Patent P2009-124462A (Published 2009.06.04)

The present invention has been made to solve the above problems of the prior art, and an object thereof is to provide a system and method for managing a fan filter unit using power line communication.

Specifically, an object of the present invention is to provide a system and method for monitoring a fan filter unit by classifying the fan filter units into groups and performing power line communication in a channel multiplexing manner.

In addition, the present invention provides a system for quickly transmitting a control command message to a fan filter unit controlling by controlling the fan filter unit by broadcasting a control command message including identification information and group identification information of the fan filter unit through power line communication. And to provide a method.

In order to achieve the above object, in the system for managing a fan filter unit by using a power line communication including a modem and a gateway for supporting power line communication according to an embodiment of the present invention, collecting from the gateway in groups And a management server configured to receive at least two pieces of fan filter unit information to be managed and to monitor the fan filter units using the received information, wherein the gateway is configured to perform a predetermined time through power line communication of a channel multiplexing method. Transmitting read request messages to the modem at intervals, receiving at least two pieces of Fan Filter Unit information collected in groups by the modem, transmitting the received fan filter unit information to the management server, and Modem communicates power line with at least two fan filter units managed in groups Stored by receiving the respective fan filter unit information setting time interval and the group, when receiving the read request message from the gateway, and transmits the stored information to the fan filter unit and the gateway.

In this case, when receiving a control command from the manager, the gateway may stop transmission of the read request message transmitted at a predetermined time interval and broadcast a control command message including the control command through power line communication.

At this time, when the modem receives the broadcasted control command message, the modem checks whether the target fan filter unit of the control command message is a fan filter unit connected to the modem, and if the result of the check is not a fan filter unit connected to the modem, deletes it. If the fan filter unit is connected to the modem, the control command message may be transmitted to the target fan filter unit through power line communication.

In this case, the gateway, after broadcasting the control command message through power line communication, may resend the read request message that was interrupted at a predetermined time interval.

According to another aspect of the present invention, there is provided a method of managing a fan filter unit using power line communication, the method comprising: performing power line communication in a channel multiplexing method at a gateway and transmitting a read request message to a modem at predetermined time intervals; Receiving at least two pieces of fan filter unit information collected by the modem in group units at the gateway; Transmitting fan filter unit information received at the gateway to a management server; Stopping the transmission of the read request message transmitted at a predetermined time interval when receiving a control command from the manager at the gateway and broadcasting a control command message including the control command through power line communication.

In this case, after the broadcasting of the control command message through power line communication, the step of transmitting the read request message may be restarted at the predetermined time interval.

On the other hand, receiving and storing each fan filter unit information at a predetermined time interval through power line communication with at least two or more fan filter units managed in a group in the modem; And transmitting the stored fan filter unit information to the gateway when the modem receives the read request message from the gateway.

The method may further include, when receiving the control command message broadcast by the modem, confirming whether a target fan filter unit of the control command message is a fan filter unit connected to the modem; And deleting if not the fan filter unit connected to the modem and transmitting the control command message to the target fan filter unit through power line communication if the fan filter unit is connected to the modem.

In addition, when the management server receives the fan filter unit information from the gateway, the method may further include monitoring the fan filter unit using the received information.

The present invention relates to a system and a method for managing a fan filter unit using power line communication, and because the use of power line communication, the initial investment of construction is reduced, construction period is shortened, installation is easy, and later maintenance It is convenient.

In addition, the present invention classifies the fan filter units into groups and monitors the fan filter units by power line communication in a group multiplexing manner, so that the monitoring cycle is short, so that the status of the fan filter units can be checked more quickly.

In addition, the present invention can control the fan filter unit quickly because the control command message is broadcast through power line communication when controlling the fan filter unit.

1 is a diagram illustrating a configuration of a system for managing a fan filter unit using power line communication according to an embodiment of the present invention.
2 is a diagram illustrating a configuration of a gateway in a system for managing a fan filter unit according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating a process of managing a fan filter unit using power line communication in a gateway according to an embodiment of the present invention.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings.

Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

Hereinafter, a system and method for managing a fan filter unit using power line communication according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

1 is a diagram illustrating a configuration of a system for managing a fan filter unit using power line communication according to an embodiment of the present invention.

Referring to FIG. 1, the system of the present invention includes a management server 120, a main distribution box 130 including breakers 132 and 134, a gateway 140 and 150, a modem 142 and 152, and a blocking filter ( 144 and 154 and group fan filter units (FFUs) 160 and 170 managed in group units. Each of the group FFUs 160 and 170 may include an FFU controller 161, 162, 171, 172 and a fan filter unit (FFU) 163, 164, 173, 174.

The management server 120 receives at least two pieces of FFU information collected and managed in groups from the gateways 140 and 150, and monitors the FFUs 163, 164, 173, and 174 using the received information. In this case, the FFU information may include at least one of the current state information of the FFU, whether there is a failure, identification information of the FFU, and location information of the FFU.

The management server 120 may read the group identifiers of the group FFUs 160 and 170 of the FFU grouped into groups with the identifiers (IDs) of each of the preset FFUs 163, 164, 173 and 174. Response times can be set. In this case, the gateway may be managed by a unique IP, the modem may be managed by a group identifier, and the FFU controller may be managed by an identifier of a controlling FFU. In this case, the identifier and the group identifier of the FFU may be set in hardware or software in each device.

According to another exemplary embodiment, the management server 120 may designate identifiers and group identifiers of the FFUs 163, 164, 173, and 174 to notify the FFU controllers 161, 162, 171, 172 and the modems 142, 152.

On the other hand, when setting the group FFU (160, 170), the greater the number of FFUs included in the group FFU, the shorter the monitoring cycle at a time, but the amount of information that must be processed at once in the gateway (140, 150) gateways (140, 150) Can act as a load. Therefore, when setting the group FFU, it is desirable to set in consideration of the correlation between the monitoring period and the load of the gateway.

In addition, the management server 120 may receive a control command from the administrator and transmit the control command to the gateways 140 and 150. In this case, the control command may be directly input through an interface unit (not shown) of the management server 120 or may be input through an external client computer 110.

The main distribution box 130 distributes power to supply power to the system. In this case, although shown based on the three-phase power in Figure 1 can be implemented as a two-phase power.

The breakers 132 and 134 are a device for shutting off a part of the power supply, including a problem part, instead of shutting down the entire power supply when a power problem occurs and repair is required.

The gateways 140 and 150 transmit a read request message to the modem at predetermined time intervals through the power line communication of the channel multiplexing method, and collect at least two fan filter units collected in groups by the modem. ) Information is received, and the received fan filter unit information is transmitted to the management server.

When receiving the control command from the manager or the management server 120, the gateways 140 and 150 stop the transmission of the read request message transmitted at a predetermined time interval and broadcast the control command message including the control command through power line communication. )do. In this case, the control command message may include identification information of the target FFU and may further include group identification information including the FFU.

After broadcasting the control command message through the power line communication, the gateways 140 and 150 transmit the interrupted read request message at predetermined time intervals.

The gateway 140 may be configured as shown in FIG. 2 below.

2 is a diagram illustrating a configuration of a gateway in a system for managing a fan filter unit according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the gateway 140 may include a control unit 210, a TCP / IP communication unit 220, a power communication unit 230, and an interface 240.

The TCP / IP communication unit 220 transmits and receives fan filter unit information received from the modems 142 and 152 as a device for transmitting and receiving data with the management server 120, and receives a control command.

The power communication unit 230 is a device for transmitting and receiving data through a power line, and transmits a data signal of tens to hundreds of KHz to the modem 142 in an alternating current of 50 to 60 Hz in which the power line is transmitted, and transmits the data signal to the modem 142. The data signal is extracted by subtracting the frequency of alternating current electricity from the received signal.

The interface 240 is a device that provides an interface with the manager, and displays the status of the current gateway 140 to the manager, and receives an input for controlling the gateway 140. In this case, the interface 240 may be configured of light emitting diodes (LEDs) indicating a state, or may be configured using a display panel or a touch panel.

The control unit 210 controls power line communication through the channel communication method through the power communication unit 230 to transmit a read request message to the modem 142 at a predetermined time interval, and collect at least in groups by the modem 142. Receives two or more fan filter unit information, and controls to transmit the received fan filter unit information to the management server (120). In this case, the number of FFUs that can be controlled by one gateway using the channel multiplexing method may not exceed a maximum of 255.

In addition, when receiving the control command, the controller 210 stops transmitting the read request message transmitted at a predetermined time interval and broadcasts a control command message including the control command to all modems connected through power line communication. . In this case, the control command message may include identification information of the target FFU and may further include group identification information including the FFU.

Referring back to FIG. 1, the modems 142 and 152 receive and store each FFU information at predetermined time intervals through power line communication with at least two FFUs managed as a group, and receive a read request message from the gateway. The stored fan filter unit information is transmitted to the gateway.

In more detail, the modems 142 and 152 request FFU information of the FFU controller at regular intervals and transmit the FFU information to the gateway.

In addition, the modems 142 and 152 receive the state values of each FFU controller at regular intervals and store the latest FFU information in real time even when there is no separate command from the management server 120 and the gateways 140 and 150. In this case, when the gateways 140 and 150 request the FFU controller status, the gateway 140 or 150 may transmit the latest FFU information received up to now or the accumulated FFU information.

The modems 142 and 152 transmit a control command received from the gateway to the FFU controller of the target FFU and communicate with the gateway using a channel multiplexing scheme.

The modems 142 and 152 preferably communicate with FFUs corresponding to one group. In this case, it is preferable that the number of FFUs that can be controlled by one modem does not exceed 32.

When the modems 142 and 152 receive the control command message broadcast from the gateways 140 and 150, the modems 142 and 152 check whether the target fan filter unit of the control command message is a fan filter unit connected to the modem, and as a result, the fan filter connected to the modem. If not, delete it and if it is a fan filter unit connected to the modem, send a control command message to the target fan filter unit via power line communication. In this case, the method of confirming whether the target fan filter unit is a fan filter unit connected to the modem may be confirmed using identification information or group identification information of the target FFU included in the control command message.

The blocking filters 144 and 154 perform noise filtering so as not to cause noise disturbances to other devices connected in the same power system. In addition, the blocking filters 144 and 154 serve to block noise introduced from other devices.

The FFUs 163, 164, 173, and 174 are installed in a clean room to maintain internal air at a clean level, and may be driven using a single phase induction motor AC motor or a BLDC motor. At this time, the BLDC (Brushless DC) motor is slightly more expensive than the AC motor, but it is preferable to configure the BLDC motor because it is advantageous in terms of energy efficiency, such as torque, noise.

The FFU controllers 161, 162, 171, 172 are devices that control the FFUs 163, 164, 173, 174 according to a control command or a read request received through the modems 142, 152.

In this case, when the FFU is configured as a brushless DC (BLDC) motor, the FFU controllers 161, 162, 171, and 172 may also be configured as brushless DC (BLDC) controllers.

The BLDC controller consists of power and driver. The power method of the BLDC controller applied to the existing FFU was designed and used by simply rectifying the input power and using it smoothly. However, due to operating efficiency and low power factor, BLDC's performance was not achieved.

In the present invention, the proposed FFU controllers 161, 162, 171 and 172 improve the operation efficiency and power factor by using a PFC (Power Factor Correction) circuit.

In addition, the proposed FFU controller (161, 162, 171, 172) can be designed by applying an IPM (Intelligent Power Module) module to the switching device of the driver stage (not shown) it can be reduced the product size, improve product protection functions.

In addition, the FFU controllers 161, 162, 171, and 172 may use a sinusoidal control method of forming and switching a 180 degree conduction section rather than a square wave control method of forming a 120 degree conduction section. The sine wave method has a complicated control design, but the efficiency is good, the torque ripple is low, and the improvement of the noise compared to the square wave can be seen.

The communication between the modems 142 and 152 and the FFU controllers 161, 162, 171 and 172 is preferably performed at the point of zero cross point in which the power is changed. Communication at the zero cross point time point is because the amount of noise present in the external power line is least distributed at the zero cross point time point.

Hereinafter, a method of managing a fan filter unit using power line communication according to the present invention configured as described above will be described with reference to the drawings.

3 is a flowchart illustrating a process of managing a fan filter unit using power line communication in a gateway according to an embodiment of the present invention.

Referring to FIG. 3, the method for managing a fan filter unit in the system of the present invention transmits a read request message to a modem at predetermined time intervals by performing power line communication in a channel multiplexing method at a gateway (S310).

In addition, the gateway of the system receives at least two pieces of fan filter unit information collected by the modem in group units (S312).

The gateway of the system transmits the received fan filter unit information to the management server (S314).

In addition, the gateway of the system checks whether a control command is received from the management server or the administrator (S316).

If the control result of the check result of step S316 is not received, the gateway returns to step S310.

When the confirmation result control command of step S316 is received, the gateway stops transmitting the read request message transmitted at a predetermined time interval (S318).

The gateway broadcasts a control command message including the control command through power line communication (S320). In this case, the control command message may include identification information of the target FFU and may further include group identification information including the FFU.

Thereafter, the gateway checks whether control of the FFU is completed (S322).

When the FFU control is completed as a result of checking in step S322, the gateway returns to step S310 to perform a series of processes again.

The packet classification method according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described by specific embodiments such as specific components and the like. For those skilled in the art, various modifications and variations are possible from these descriptions.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (10)

A system for managing a fan filter unit using power line communication, including a gateway and a modem supporting power line communication, the system comprising:
A management server configured to receive at least two pieces of fan filter unit information collected and managed in group units from the gateway and to monitor the fan filter unit using the received information;
Further comprising:
The gateway is,
Sends a read request message to a modem at predetermined time intervals through a channel multiplexing power line communication, receives at least two pieces of fan filter unit information collected by the modem in groups, and receives the received fan. Send the filter unit information to the management server,
The modem includes:
Receives and stores each fan filter unit information at a predetermined time interval through power line communication with at least two fan filter units managed as a group, and stores the stored fan filter unit information when the read request message is received from the gateway. Sent to the gateway
A system for managing fan filter units using power line communication. The method of claim 1,
The gateway is,
When the control command is received from the manager, the transmission of the read request message transmitted at a predetermined time interval is stopped and a control command message including the control command is broadcasted through power line communication.
A system for managing fan filter units using power line communication. The method of claim 2,
The modem includes:
Upon receiving the broadcasted control command message, confirm that the target fan filter unit of the control command message is a fan filter unit connected to the modem. In the case of a filter unit, transmitting the control command message to the target fan filter unit through power line communication.
A system for managing fan filter units using power line communication. The method of claim 2,
The gateway is,
After broadcasting the control command message through power line communication,
Resending the read request message that was interrupted at a preset time interval.
A system for managing fan filter units using power line communication. Performing power line communication in a channel multiplexing method at a gateway to transmit a read request message to a modem at a predetermined time interval;
Receiving at least two pieces of fan filter unit information collected by the modem in group units at the gateway;
Transmitting fan filter unit information received at the gateway to a management server;
Stopping the transmission of the read request message transmitted at a predetermined time interval when receiving a control command from the manager at the gateway and broadcasting a control command message including the control command through power line communication;
A method of managing a fan filter unit using power line communication. The method of claim 5,
After broadcasting the control command message through power line communication,
Resuming sending the read request message at the predetermined time interval that was interrupted;
A method of managing a fan filter unit using power line communication. The method of claim 5,
Receiving and storing each fan filter unit information at predetermined time intervals through power line communication with at least two or more fan filter units managed as a group in the modem; And
Transmitting the stored fan filter unit information to the gateway when the modem receives the read request message from the gateway.
A method of managing a fan filter unit using power line communication. The method of claim 5,
Upon receipt of the control command message broadcast on the modem, checking whether the target fan filter unit of the control command message is a fan filter unit connected to the modem; And
If it is determined that the fan filter unit connected to the modem is deleted and the fan filter unit connected to the modem further includes transmitting the control command message to the target fan filter unit through power line communication.
A method of managing a fan filter unit using power line communication. The method of claim 5,
And receiving the fan filter unit information from the gateway at the management server, monitoring the fan filter unit using the received information.
A method of managing a fan filter unit using power line communication. A computer-readable recording medium in which a program for executing the method of any one of claims 5 to 9 is recorded.

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