KR101521880B1 - Apparatus for controlling and displaying universal measuring data of tunnel ventilation automatic control system - Google Patents

Apparatus for controlling and displaying universal measuring data of tunnel ventilation automatic control system Download PDF

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Publication number
KR101521880B1
KR101521880B1 KR1020140156011A KR20140156011A KR101521880B1 KR 101521880 B1 KR101521880 B1 KR 101521880B1 KR 1020140156011 A KR1020140156011 A KR 1020140156011A KR 20140156011 A KR20140156011 A KR 20140156011A KR 101521880 B1 KR101521880 B1 KR 101521880B1
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South Korea
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communication
control system
measurement data
automatic control
tunnel
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KR1020140156011A
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Korean (ko)
Inventor
송재혁
이규형
김주회
최윤석
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(주)파코코리아인더스
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/36—Electric signal transmission systems using optical means to covert the input signal
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2200/00—Transmission systems for measured values, control or similar signals

Abstract

The present invention relates to an apparatus for controlling and displaying universal measuring data of tunnel ventilation automatic control system configured to be able to interwork with an external PLC directly by supporting RS-485 Ethernet communications system selectively. To this end, in an apparatus for displaying measuring data measured with a particulate matter meter and an airflow meter of a tunnel ventilation automatic control system, the present invention comprises: a selective output interface part equipped with a selectable communications port where any one of RS-485 communications or Ethernet communications to an output port can be set by an user to connect any one of two communications ports depending on the user′s setting values; and a controlling part to request data to each meter of the tunnel ventilation automatic control system each predetermined time, control analysis and displaying of measured data received and operation of devices comprehensively, and support each meter and external PLC of the tunnel ventilation automatic control system to be able to interwork directly by controlling selective change of communications settings of RS-485 or Ethernet communications system or corresponding mode bus-RTU protocol, whereby PLC can collect measured data without adding additional CDC and users′ requirements can be coped with properly through selective change of communications settings of RS-485 or Ethernet communications system.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for controlling a tunnel ventilation automatic control system,

The present invention relates to a measurement data control and display device for an automatic control system for a tunnel ventilation system that measures and expresses the environment inside a tunnel by using carbon monoxide (CO), an air quality monitor, and an air flow monitor. In more detail, the RS-485 or Ethernet communication method is selectively supported according to a user setting value and can be directly linked with an external programmable logic controller (PLC) (MODBUS) -RTU protocol, which is mainly used by most users in the domestic industrial field, is provided to allow the measurement data to be collected by an external PLC without using additional Central Data Controller (hereinafter abbreviated as CDC) Can be selectively changed according to the set communication method, so that the user can appropriately respond to the user's requirements And more particularly, to a universal measurement data control display apparatus of a tunnel ventilation automatic control system.

In general, the tunnel formed on the road is in a closed environment independent of the outside. Therefore, the air inside the tunnel can be easily deteriorated due to soot or dust emitted from the vehicle. If the environment management in the tunnel is not properly performed, The internal environment of the tunnel may adversely affect the respiratory health of the driver, and may also cause a traffic jam, an accident, or a fire by dimming the visibility of the driver due to the shortening of the visibility distance. Or in the event of a fire, it may lead to a major traffic accident, mass casualties and loss of facilities.

Therefore, the environment inside the tunnel must be continuously managed. For this purpose, conventionally, at least one measuring instrument is installed in a designated place inside the tunnel and the measurement data of the measuring instrument is collected to collect the noxious gas in the air inside the tunnel, Environmental data such as dust and / or smoke content, change in wind speed, and fire occurrence are managed. Furthermore, in order to maintain an ideal tunnel environment by artificially controlling the environment inside the tunnel, Researches are actively conducted to detect and automatically control the tunnel environment.

In this regard, Korean Patent Laid-Open Publication No. 10-2000-0006647 (published on Feb. 2, 2000, hereinafter abbreviated as "Patent Document") provides a tunnel environment in which the environment in the tunnel is detected and controlled in a comprehensive manner to provide a desirable tunnel environment Techniques relating to tunnel environment measurement and fire control integrated control systems are known.

According to the patent document, a control unit for overall control of the system, a sensing unit for sensing the environment in the tunnel, an input unit for inputting environmental information sensed by the sensing unit, and an output unit connected to the input unit for processing and outputting environment information Lighting, an electric signboard, etc., to provide a pleasant environment in the tunnel according to the control unit, and the data from the sensing unit can be converted into a communication signal by the communication signal conversion module, Control can be performed.

Recently, all basic measurement elements (visible distance, carbon monoxide (CO), nitrogen oxide (NO), air flow, etc.) necessary for environmental management inside the tunnel have been measured by using carbon monoxide (CO) Tunnel CRAFT III, a tunnel ventilation automatic control system of CODEL, has been developed.

1, the conventional tunnel ventilation automatic control system measures the visible distance, the carbon monoxide (CO), and the nitrogen oxide (NO) inside the tunnel, and performs the RS-485 serial communication or the current (4-20mA) (CO) and visible distance meter (AQM) that output data to the tunnel, and the wind speed and direction (air flow direction and direction) inside the tunnel. It is also used for RS-485 serial communication or current (4-20mA) (AFM) to measure all the basic elements necessary for the atmospheric measurement inside the tunnel, and it is mainly used for the control display (TDU) installed on the panel inside the tunnel by RS-485 serial communication By outputting and displaying the data, it is possible to confirm the measurement data in the field. The control unit (TDU) is also configured to transmit data to an external central instrumentation controller (CDC) via RS-485 serial communication.

However, since the conventional tunnel ventilation automatic control system (AQM, AFM) uses its own protocol, it can not be directly connected to an external PLC.

Therefore, in order to interlock the instrument of the conventional tunnel ventilation automatic control system with the external PLC, it is necessary to collect data of TDU by RS-485 serial communication and to transmit CDC between current (4-20mA) and contact signal This allows the data of each instrument (AQM, AFM) to be received by the CDC via the TDU and then interlocked with the PLC via the analog output (4-20mA) of the CDC.

In addition, the majority of users in the domestic industrial field tend to prefer RS-485 or Ethernet communication supporting the MODBUS-RTU protocol rather than analog signals, but the TDU of the conventional tunnel ventilation automatic control system It does not support the Modbus-RTU protocol, which is a universal protocol mainly used in the domestic industrial field, and thus has a disadvantage in that it can not properly meet the requirements of users.

KR 10-2000-0006647 A 2000.02.07 Released

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in an effort to solve the above problems, and it is an object of the present invention to provide a method and apparatus for selectively supporting an RS-485 or Ethernet communication method according to a set value of a user, (MODBUS) -RTU protocol according to the set RS-485 or Ethernet communication method. It is possible to connect the PLC directly to the external PLC so that the measurement data can be collected by the PLC without using additional CDC. And to provide a universal measurement data control display device of a tunnel ventilation automatic control system which can appropriately cope with user's requirements through modification.

In order to achieve the above object, an embodiment of the present invention provides a measurement data control display device for displaying measurement data measured by carbon monoxide (CO), a visible range meter (AQM) and a wind direction / anemometer (AFM) An optional output interface unit for selectively connecting one of the two communication ports to an output port according to a user setting value, the apparatus having an optional communication port capable of setting any one of RS-485 communication or Ethernet communication by a user, , Requests data to each instrument of the tunnel ventilation automatic control system at predetermined time, analyzes and exposes the received measurement data and controls the operation of the device according to the user setting, and controls the RS-485 or Ethernet Communication port setting and corresponding MODBUS-RTU protocol selection And a communication method / protocol control unit that directly controls each instrument of the tunnel ventilation automatic control system and the external PLC by controlling the change of the control system.

According to the present invention, it is possible to collect and read observation data serially from the carbon monoxide (CO), visible range meter (AQM) and wind direction / anemometer (AFM) of the tunnel ventilation automatic control system, The Modbus-RTU protocol can be selectively converted according to the communication or Ethernet communication method and transmitted to the external PLC. Therefore, it is possible to directly connect with the external PLC without CDC, There is an advantage to be able to.

FIG. 1 is a conceptual diagram illustrating a configuration required for a measurement data control and display device (TDU1) of a conventional tunnel ventilation automatic control system to operate in conjunction with an external PLC.
FIG. 2 is a conceptual diagram illustrating a configuration required for a general purpose measurement data control and display device (TDU2) of a tunnel ventilation automatic control system according to the present invention to interwork with an external PLC.
3 is a block diagram illustrating a detailed configuration of a general-purpose measured data control and display device (TDU2) of the automatic control system for tunnel ventilation according to the present invention.
FIG. 4 is a block diagram of an overall system configuration for explaining a connection relationship between a general purpose measurement data control display device (TDU2) and a peripheral device in the tunnel ventilation automatic control system according to the present invention.
FIGS. 5A and 5B to 5D are operational flowcharts illustrating a process of displaying measurement data and a process of converting a communication protocol, which are executed in the general-purpose measurement data control and display apparatus of the automatic control system for a tunnel ventilation according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a general configuration and operation of a general-purpose measured data control display device of a tunnel ventilation automatic control system according to the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention. Therefore, it should be understood that the embodiments described herein and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and that various equivalents and modifications may be substituted for them at the time of the present application shall.

FIG. 2 is a conceptual diagram illustrating a configuration of a general purpose data control and display device (TDU2) of a tunnel ventilation automatic control system according to the present invention, which is necessary for interlocking with an external PLC. As illustrated in FIG. 2, The general purpose measurement data control and display device TDU2 is provided with a carbon monoxide (CO) and a visible range meter (AQM) 11 of a tunnel ventilation automatic control system 10 (hereinafter referred to as Tunnel CRAFT III of CODEL Co., The measurement data measured by the wind direction / anemometer (AFM) 12 is collected and read out through the input channel connected to the RS-485 line and displayed, and the modbus- And can be directly interlocked with the external PLC 30 by selectively changing the RTU protocol.

FIG. 3 is a block diagram illustrating a detailed configuration of a general-purpose measured data control and display device (TDU2) of a tunnel ventilation automatic control system according to the present invention, FIG. 4 is a block diagram illustrating a general- 3 and 4, the general-purpose measured data control display apparatus according to the present invention includes an input interface unit 111, a display unit 110, A key input unit 112, a display unit 113, an optional output interface unit 114, a power supply unit 115, a control unit 116 and a selective light conversion unit 117. The communication protection circuit unit 118, And a power supply protection circuit 119.

The input interface unit 111 collects and reads the measurement data of the carbon monoxide (CO), the visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 by RS-485 serial communication. The input interface unit 111 may further include at least one ganged contact signal input port IN1, and at least one equipment current signal input port IN2. At this time, one or more gangway contact signal input port IN1 is connected to the opening / closing switch of one or more emergency evacuation doors installed inside the tunnel through a signal line, and is used to receive a gang door contact signal according to the on / And at least one equipment current signal input port IN2 may be connected to at least one measuring equipment installed in the tunnel through a signal line so as to receive a current signal from each measuring equipment.

The key input unit 112 is configured to select one or more LCD display modes for display of measurement data, select a communication address in each LCD display mode, opacity and visibility in each LCD display mode, And a plurality of keys for user setting of the manipulated value, and transmits the set value by the user key input to the control unit 116. [ The key input unit 112 may include a mode selection key, an up / down key, and an enter key. At this time, the mode selection key is used to operate the selection entry into one or more LCD display modes for selectively displaying the measurement data of the carbon monoxide (CO) and the visual distance meter 11 and the wind direction / anemometer 12 through the respective display modes And the up key and down key can be used for up / down operation of the selection, opacity, visibility and data level of the communication address displayed in each LCD display mode, and the enter key can be used for the value manipulated by the up / And generates a set value corresponding to each key operation and transmits it to the control unit 116. [

The display unit 113 displays the measurement data received from each of the meters 11 and 12 via the two-wire communication bus RS-485 connection of the input interface unit 111, the reception state thereof, and the operation state and communication state of the apparatus . In particular, the display unit 113 may include an LCD display unit 113a and an LED display unit 113b. At this time, the LCD display unit 113a can be used to display the communication state of the device while selectively displaying the measurement data received from each of the meters 11 and 12 through a liquid crystal display (LCD), and the LED display 113b And can be used to display the reception state of the measurement data by each of the meters 11 and 12 and the operation state of the apparatus through the light emitting diodes (LEDs), respectively.

Here, the LCD display unit 113a displays the CO, the visible distance data display mode, the wind direction / wind speed It is possible to have two LCD display modes separated by data display mode. For example, it is implemented as 2 lines, 32 characters, back-light LCD, And the selection control), while simultaneously displaying the measurement data while displaying the communication state of the device. The display operation of the LCD display unit 113a is controlled by the key input unit 112 and the main control unit 116. That is, when the user operates the mode selection key and the up / down key of the key input unit 112, The opaqueness, the visibility, and the data level are set in the LCD display mode by operating the up / down keys, and then the enter key is inputted. Then, the set value is sent to the main control unit 116 Therefore, according to the value set through the key operation in the main control unit 116, selection of the LCD display mode for displaying the measurement data, selection of the communication address in the LCD display mode, opacity and visibility, and data level are set, To be displayed in a set state.

The LED display unit 113b displays the data validity and the reception state (Alarm) of the measurement data by the measuring instruments 11 and 12 by the flashing operation of the LEDs, respectively.

The selective output interface unit 114 includes an optional communication port configured to allow the user to set any one of RS-485 communication or Ethernet communication, and selectively outputs one of two communication ports to the output port Lt; / RTI > The selective output interface unit 114 may further include a contact control signal output port OUT1 for outputting at least one contact control signal for controlling operation of at least one measurement equipment installed in the tunnel .

The power supply unit 115 supplies operating power to each part of the apparatus. The power supply unit 115 further includes respective protection circuits for protecting the electric circuit or the communication circuit from external electrical or magnetic anomalies (inductive overhead voltage, power supply interruption, current voltage fluctuation, noise, overcurrent, etc.) .

The controller 116 periodically requests data from each of the meters AQM and AFM of the tunnel ventilation automatic control system at predetermined time intervals and analyzes and displays the received measurement data and the operation of the device according to the user setting as a whole (AQM, AFM) of the automatic control system of the tunnel ventilation by controlling the communication port setting of the RS-485 or Ethernet communication method according to the user setting value and the selective change of the MODBUS-RTU protocol corresponding thereto, And the external PLC 30 in a directly interlocked manner. In particular, the control unit 116 of the present invention checks the communication port connected to the output port of the selective output interface unit 114 to automatically set the RS-485 communication port or the Ethernet communication port according to the user setting value, RTU protocol according to the communication mode and to selectively control the master / slave mode of each MODBUS-RTU protocol corresponding to each communication method.

The selective light converting unit 117 is connected to the output port of the selective output interface unit 114 and is connected to the output port of the selective output interface unit 114 for selectively performing RS- -485 / optical converter 117a and an Ethernet / optical converter 117b. The RS-485 / optical converter 117a is selected when the user setting value is RS-485, and the Ethernet / optical converter 117b is selected when the user setting value is the Ethernet communication mode And is configured to selectively perform signal conversion corresponding to each communication method.

The communication protection circuit portion 118 is provided at both ends of the selective light conversion portion 117 to protect the communication line and the circuit from a communication surge abruptly applied from the outside through a communication circuit, 118 are provided between the output port of the selective output interface unit 114 for connecting the selective lightconversion unit 117 and the selective lightconversion unit 117 and between the output port of the selective lightconversion unit 117 and the output port of the selective lightconversion unit 117, And the external PLC 30, respectively.

4, the power supply protection circuit 119 is connected to the front end of the power supply unit 115 and the external PLC 30 to protect the power supply line and the circuit from the power surge abruptly applied from the outside through the electric circuit, Respectively.

5A and 5B to 5D are operational flowcharts illustrating the process of expressing measured data and the process of converting a communication protocol executed in the general-purpose measured data control and display device of the automatic control system for a tunnel ventilator according to the present invention, 5B to 5D are flowcharts showing an operation flow between the universal measurement data control display device and the external PLC, And this operation can be performed by the control unit 116 of the universal measurement data control display device (TDU2).

5A, the display process of the measurement data performed by the control unit 116 is performed by periodically requesting data from each instrument (AQM, AFM) of the tunnel ventilation automatic control system at predetermined times (for example, 1 second) (Step S103). The steps S101 and S102 are the steps of analyzing the received measurement data (S103), analyzing the received measurement data (S103) (S107 to S109, S107-1 to S109-1) of setting a flag for each state of each flag, driving and stopping an alarm (for example, a red light emitting diode) (S110, S110-1, and S111) for controlling the reception and display of the measurement data and the display operation of the reception state.

As shown in FIGS. 5B to 5D, the protocol conversion process performed by the control unit 116 includes arranging data and protocols of the AQM (AFM) and determining whether the user setting value is an RS-485 or Ethernet communication scheme (S210, S230) of setting an RS-485 communication port or an Ethernet communication port according to a user setting value as a result of the determination of the communication mode, performing a master operation mode (S212-S217) for distinguishing the operation mode as a master or the operation mode as a slave for each RS-485 or Ethernet communication system S218-S221, or S232-S237, or S238-S241).

The operation processing step as a master for each of the RS-485 communication method and the Ethernet communication method includes steps S212, S213, S232, and S233 of arranging the MODBUS-RTU protocol and transmitting the data to the external PLC 30, A step S214 or S234 of waiting for a response from the external PLC 30 or a step S215 or S235 of analyzing the protocol of the response data in response to the response from the external PLC 30 and the ID and function FUNCTION, (S217, S236) of checking whether the data is valid by checking the number and the number of checksums, checking whether the data is valid, and driving the alarm (for example, green light emitting diode) .

(S218, S238) of waiting for the command of the external PLC 30, and when receiving the command of the external PLC 30, the operation processing step of the slave for the RS-485 communication method and the Ethernet communication method, (S219, S239), checking whether the command is valid (S220, S240) by checking the ID and the function (FUNCTION), the address, the number, and the checksum. When the validity of the command is confirmed, 30) of transmitting the data (S221, S241).

The universal measurement data control and display device TDU2 having such a configuration is connected to the carbon monoxide (CO) and visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 of the tunnel ventilation automatic control system 10, A plurality of measurement data measured in the first and second measurement units 11 and 12 are serially received and read out through an input channel connected to an RS-485 line, and the communication method and the MODBUS-RTU protocol are selectively converted according to a user setting value It is possible to directly provide the requests for a plurality of measurement data required by the external PLC 30. [

In order to facilitate the understanding of the present invention, the configuration of the automatic control system for the tunnel ventilation will be described in more detail. The carbon monoxide (CO) and the visible range meter (AQM) 11 are meters that use infrared and visible light channels, And a reflector installed at a position spaced apart from the transmitter emitting a certain distance (for example, a distance of about 3 m). The amount of light reflected from the reflector is absorbed by the transmitter, and the visible distance extinction coefficient, Determine the CO and NO constants and measure the visible distance and CO and NO. At this time, the optical visible distance is measured by a silicon photodetector and the infrared absorption due to CO is measured by using a gas cell correlation technology. Cells sealed with CO are conducted through the detector window once per second using a continuous rotation stepper motor. To determine the measured value, the measured value obtained by the presence or absence of the sealed cell determines the measured value by the absorption ratio by CO in a single path. From this, measurements in the atmosphere are obtained with PPM and are configured to enable direct communication with AQM or AFM via serial data link via RS232 / RS-485.

The AFM 12 of the automatic control system of the tunnel ventilating system is composed of a transmitter and a receiver arranged in a pair so that the wind speed can be measured using ultrasonic waves, Lt; RTI ID = 0.0 > receiver. ≪ / RTI > At this time, the velocity of the ultrasonic waves increases in the forward direction by the wind speed and the velocity of the ultrasonic waves decreases in the reverse direction. The velocity difference of the ultrasonic waves causes a phase change between the pair of receiving parts, in which the signal of the phase change is determined by the wind direction and the amount of the change is directly proportional to the wind speed. In addition, the inner receive pair defines the high speed wind speed value, the external receive pair defines the low wind speed value, and the phase change and the increase of the wind direction measurement are continuously calculated by the built-in processor, .

The operation and effect of the universal measurement data control and display apparatus of the automatic control system for tunnel ventilation according to the present invention constructed as described above will be described below.

First, a general measurement data control display unit (TDU2) is connected to carbon monoxide (CO) and a visible range meter (AQM) 11 of a tunnel ventilation automatic control system 10 and a wind direction / anemometer (AFM) When the operation power is supplied to the respective parts of the display device TDU2, the carbon monoxide (CO), the visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 of the tunnel ventilation automatic control system 10, Nitric Oxide, Carbon Monoxide, Air Flow and Direction, all of which are necessary for the measurement of the surface area of the substrate.

At this time, the input interface 111 of the universal measurement data control display unit TDU2 is connected to the carbon monoxide (CO) and visible range meter (AQM) 11 and the wind direction / anemometer (AFM) The universal measurement data control and display device TDU2 can collect the measurement data of the two meters 11 and 12 in series. In this state, the control unit 116 of the universal measurement data control display unit TDU2 outputs a signal to the tunnel ventilation control unit 116 in a polling manner at predetermined time intervals (for example, every second) through the RS-485 input channel of the input interface unit 111 The measurement data is requested to the carbon monoxide (CO) and the visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 of the automatic control system 10. Therefore, in the carbon monoxide (CO) and visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 of the automatic control system 10 of the tunnel, the visibility distance measured for the tunnel atmosphere measurement, All the basic measurement elements such as carbon monoxide, air flow and direction are provided to the universal measurement data control display unit (TDU2) through the RS-485 input channel of the input interface unit 111 do.

Accordingly, in the universal measurement data control display unit (TDU2), a plurality of measurement data provided from the two meters (11, 12) are serially received and read through the RS-485 input channel of the input interface unit (111) (CO) and visible range data display mode or a wind direction / wind speed data display mode, according to a user setting value through the key input unit 112. In this case, The display unit 113 controls the LCD display unit 113a to check the validity of the measurement data, the reception status of the measurement data, and the operation status of the device, and controls the LED display unit 113b accordingly. , The display data of the measurement data and the communication status are displayed in the LCD display mode set by the user through the key operation, The reception state and the operating state of the device of the emitter it is possible to be exposed through each LED of the LED display section (113b).

The main control unit 116 outputs the measurement data and the digital input values of each of the meters 11 and 12 collected through the input interface unit 111 to an optional output interface The controller 110 controls the selective light converting unit 117 through the control unit 114 so that requests for a plurality of measurement data required by the external PLC 30 can be transmitted to any one of RS-485 communication or Ethernet communication capable of supporting the standard mode bus protocol And can be directly supplied to the external PLC 30 through a digital output.

According to the present invention as described above, the general-purpose measurement data control and display device (TDU2) is capable of outputting the signals from the carbon monoxide (CO), the visible range meter (AQM) 11 and the wind direction / anemometer The measured data can be collected and read out in series, and the collected measurement data can be converted to a standard mode bus protocol (RS-485 communication, Ethernet communication), which is a universal protocol used in domestic industrial fields, and can be directly transmitted to an external PLC , It is possible to interoperate between the automatic control system of the tunnel ventilation and the PLC without the CDC, thereby being able to efficiently meet the user's requirements in the industrial field.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Modification is possible. Accordingly, the spirit of the present invention should be understood only in accordance with the following claims, and all equivalents or equivalent variations thereof are included in the scope of the present invention.

10: Tunnel ventilation automatic control system
11: Carbon monoxide (CO) and visible range meter (AQM) 11
12: Wind direction / anemometer 30: PLC
111: input interface unit 112: key input unit
113: Display section 113a: LCD display section
113b: an LED display unit 114: an optional output interface unit
115: power supply unit 116:
117: Selective optical conversion unit 117a: RS-485 / optical converter
117b: Ethernet / optical converter 118: Communication protection circuit
119: Power supply protection circuit part TDU2: General-purpose measurement data control display

Claims (8)

delete delete delete A measurement data control display device for displaying measurement data measured by carbon monoxide (CO), a visible range meter (AQM) 11 and a wind direction / anemometer (AFM) 12 of an automatic tunnel air flow control system,
An input interface 111 for collecting and reading the measurement data of the carbon monoxide (CO), the visible range meter (AQM) 11 and the wind direction / anemometer (AFM) 12 by RS-485 serial communication;
A plurality of keys for entering a selection of an LCD display mode for displaying measurement data, a communication address selection in an LCD display mode, an opacity and visibility and a data level up / down operation, and a user setting of a manipulated value, A key input unit 112 for transmitting a set value by user key input to the control unit 116;
An LCD display section 113a for displaying the communication state of the apparatus while selectively displaying the measurement data received from each of the meters 11 and 12, (113) for displaying measurement data received from each of the meters (11,12), a reception state thereof, and an operation state and a communication state of the device, the LED display portion (113b)
An optional output interface unit 114 that has an optional communication port that can set any one of RS-485 communication or Ethernet communication by a user and selectively connects any one of the two communication ports to an output port according to a user setting value, ;
A power supply unit 115 for supplying operating power to each part of the apparatus;
(AQM, AFM) of the tunnel ventilation automatic control system periodically at every predetermined time, analyzes and displays the received measurement data, controls the operation of the device according to the user setting as a whole, (AQM, AFM) of the automatic control system of the tunnel ventilation system and the external PLC (control system) of the automatic control system of the tunnel ventilation by controlling the communication port setting of the RS-485 or Ethernet communication method according to the value and the corresponding modification of the MODBUS- 30) to be directly interlocked with each other; And
An RS-485 / optical converter 117a connected to the output port of the selective output interface unit 114 for selectively performing signal conversion corresponding to an RS-485 or Ethernet communication scheme according to a user setting value, And an optical / electrical converter 117 composed of an Ethernet / optical converter 117b,
The input interface unit (111)
At least one gangway contact signal input port connected to a gate switch of at least one emigrant communication gantry installed in the tunnel through a signal line to receive a gantry contact signal according to an on / off operation of each on / off switch, And at least one equipment current signal input port connected to the at least one measuring equipment through a signal line for receiving a current signal from each measuring equipment,
The selective output interface unit (114)
And a contact control signal output port for outputting at least one contact control signal for controlling operation of at least one measuring equipment installed in the tunnel,
The control unit (116)
The communication port connected to the output port of the selective output interface unit 114 is checked to automatically set the RS-485 communication port or the Ethernet communication port according to the user setting value, and the Modbus-RTU protocol is changed according to each communication method And selectively controlling the master / slave mode of each of the MODBUS-RTU protocols corresponding to each communication method. delete delete delete delete
KR1020140156011A 2014-11-11 2014-11-11 Apparatus for controlling and displaying universal measuring data of tunnel ventilation automatic control system KR101521880B1 (en)

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CN105275488A (en) * 2015-10-30 2016-01-27 滨州学院 Mine auxiliary ventilation control system and mine auxiliary ventilation method
KR20220155697A (en) * 2021-05-17 2022-11-24 주식회사 다인펌프 Water pump monitoring system and operation method of the same

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KR20000006647A (en) * 1999-09-03 2000-02-07 정종승 An integrated control system for measuring an environment in a tunnel and watching an occurrence of a fire
KR20010025382A (en) * 2000-12-20 2001-04-06 정종승 Method of driving a longitudinal-flow type ventilation facilities of a tunnel
KR20010103055A (en) * 2000-12-20 2001-11-23 정종승 Pollution level and visibility prediction methods of a longitudinal-flow type tunnel, and permitted pollution level and visibility maintenance methods therefrom
KR100604228B1 (en) * 2005-12-30 2006-07-28 한영콘트롤 주식회사 Web base building integrated civil official and control system

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Publication number Priority date Publication date Assignee Title
KR20000006647A (en) * 1999-09-03 2000-02-07 정종승 An integrated control system for measuring an environment in a tunnel and watching an occurrence of a fire
KR20010025382A (en) * 2000-12-20 2001-04-06 정종승 Method of driving a longitudinal-flow type ventilation facilities of a tunnel
KR20010103055A (en) * 2000-12-20 2001-11-23 정종승 Pollution level and visibility prediction methods of a longitudinal-flow type tunnel, and permitted pollution level and visibility maintenance methods therefrom
KR100604228B1 (en) * 2005-12-30 2006-07-28 한영콘트롤 주식회사 Web base building integrated civil official and control system

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* Cited by examiner, † Cited by third party
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CN105275488A (en) * 2015-10-30 2016-01-27 滨州学院 Mine auxiliary ventilation control system and mine auxiliary ventilation method
KR20220155697A (en) * 2021-05-17 2022-11-24 주식회사 다인펌프 Water pump monitoring system and operation method of the same
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