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KR101536119B1 - Vfd integrated control board having an realtime process of various analog/digital input/output signal and hmi function - Google Patents

Vfd integrated control board having an realtime process of various analog/digital input/output signal and hmi function Download PDF

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Publication number
KR101536119B1
KR101536119B1 KR1020150054300A KR20150054300A KR101536119B1 KR 101536119 B1 KR101536119 B1 KR 101536119B1 KR 1020150054300 A KR1020150054300 A KR 1020150054300A KR 20150054300 A KR20150054300 A KR 20150054300A KR 101536119 B1 KR101536119 B1 KR 101536119B1
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South Korea
Prior art keywords
analog
central processing
processing unit
hmi
voltage
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KR1020150054300A
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Korean (ko)
Inventor
장수상
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주식회사 라텍
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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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
    • G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)

Abstract

The VFD integrated control board having real-time signal processing and various HMI functions of various analog / digital input / output signals according to the present invention includes a firmware downloader for downloading firmware to a central processing unit provided on an integrated control board and a central processing unit HMI data downloader that downloads HMI data, and analog voltage, analog current, or digital signal according to the program of firmware downloaded to central processor, processes analog signal, outputs analog voltage, current or digital signal and outputs HMI data downloader And an integrated control unit for providing an HMI (Human Machine Interface) according to the HMI data stored in the central processing unit.

Figure R1020150054300

Description

(VFD INTEGRATED CONTROL BOARD HAVING ANALOGUE / DIGITAL INPUT / OUTPUT SIGNAL AND HMI FUNCTION), which has real-time processing of various analog / digital input /

The present invention relates to a VFD integrated control board having real-time signal processing and HMI functions of various analog / digital input / output signals, and more particularly, to a VFD integrated control board capable of processing analog or digital input / The present invention relates to a VFD integrated control board having real-time signal processing of an analog / digital input / output signal and an HMI function.

Generally, PLC is used to control the VFD in the field where VFD (Variable Frequency Drive) is applied in industrial field, and a PLC (Human Machine Interface) module is connected with PLC for user interface.

However, since the PLC and the HMI are separated from each other as described above, a separate program must be implemented to implement the PLC and the HMI.

In addition, the above-mentioned method has a problem in that the communication part is complexly configured for inter-operation between the PLC and the HMI, so that individual applications due to the application frequently occur when applied to different fields.

In addition, since the above-described method is a method in which the PLC and the HMI are separately linked, the space and the space utilization are not good, and PLC and HMI modules are mostly expensive modules. there was.

In addition, there are many cases in which PID control is required when driving the VFD in the industrial field. However, there is a problem in that there is a limit to PID control in the above-described manner.

In the prior art, there is a "high voltage inverter controller" of the patent registration number "10-1303956". The high voltage inverter controller is a high voltage inverter controller that provides various field buses for interworking with an upper system, A local control panel for transmitting a local command input by an administrator to the first control unit, and a tracking and debug program executed by the PC to calculate a voltage command of the inverter, A memory trace unit for debugging a memory parameter of the sequence control program of the first control unit, a system voltage / current, a motor voltage / current, and a DC link voltage to the first control unit, Output-related parameters, monitoring, control, diagnosis, setting, and upgrade- A memory unit for storing set values and control values to be exchanged between the first control unit and the second control unit and a second board for converting various field buses into various field buses, 2 < / RTI > control unit.

Korean Patent Publication No. 1999-0032458 (May 15, 1999) Korea Patent Registration No. 10-1303956 (2013.09.05)

In order to solve the above problem, the present invention integrates PLC and HMI to reduce the price of expensive modules such as PLC and HMI, and reprograms firmware so that various analog and digital input / output signals It is an object of the present invention to provide a VFD integrated control board having real-time signal processing and HMI functions.

In addition, the present invention provides real-time signal processing and HMI functions of various analog / digital input / output signals including PID (Proportional Integral Derivative) control logic for real time input signal processing suitable for various applications Another object of the present invention is to provide a VFD integrated control board.

In order to achieve the above object, according to the present invention, there is provided a VFD integrated control board having real-time signal processing of various analog / digital input / output signals and an HMI function includes a firmware downloader for downloading firmware to a central processing unit provided in an integrated control board, HMI data downloader that downloads HMI data to a central processing unit equipped with a central processing unit, and a firmware program downloaded to the central processing unit, and processes analog signals, analog currents, or digital signals, processes them, and outputs analog voltage, current, And an integrated control unit for providing an HMI (Human Machine Interface) according to the HMI data stored in the central processing unit through the HMI data downloader.

The VFD integrated control board having real-time signal processing and HMI function of various analog / digital input / output signals according to the present invention having such a configuration integrates PLC function and HMI function and outputs analog voltage, current or digital signal To drive the VFD to control the RPM of a fan motor or the like coupled with the VFD.

In addition, it is possible to adjust the RPM of the fan motor after feedback of data from the temperature sensor and pressure sensor installed in the engine room together with the fan motor, so that the temperature and pressure of the engine room can be maintained at a predetermined level, The amount of electricity consumed in driving the fan can be saved.

In addition, since analog voltage, current, or digital signals can be input, the VFD can be controlled based on the sensed data after receiving the sensed data from the pressure sensor and the temperature sensor.

In addition, the present invention has an advantage that a user can easily use the present invention by using the HMI method.

Therefore, by integrating PLC and HMI, the present invention not only lowers costly modules such as PLC and HMI, but also makes it possible to use and re-program firmware in various industrial fields.

Further, since the present invention can be manufactured in a small size, it can be installed in a narrow space, and thus it has a peak point that the space utilization is excellent.

In addition, since real-time input signal processing is possible, it can be applied to various application fields, and it is advantageous that precise control is possible by using PID control logic.

1 is a control block diagram of the present invention,
2 is a diagram for explaining a process of downloading a created executable file or an image file to memory,
3 is a view for explaining an embodiment in which the present invention is applied to a plurality of inverter controls,
4 is a diagram illustrating a state in which one master board and a plurality of slave boards are connected to each other,
5 shows an embodiment of PID control,
6 is a control flowchart for explaining a procedure for controlling the RPM of the fan in an automatic mode, a manual mode, a bypass mode, or a customized mode.
7 shows an example in which an HMI (Human Machine Interface) screen is displayed on a display unit provided in the present invention,
8 is a control flowchart showing a communication interface method of the present invention.

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

As shown in FIG. 1, a VFD integrated control board having real-time signal processing and HMI functions of various analog / digital input / output signals according to the present invention includes a central processing unit 3 provided in an integrated control board 2, A HMI data downloader 29 for downloading HMI (Human Machine Interface) data to the central processing unit 3 provided in the integrated control board 2, and a central processing unit 3 And receives an analog voltage, an analog current, or a digital signal according to a program of the downloaded firmware, processes the signal, outputs an analog voltage, a current, or a digital signal and outputs the HMI data stored in the central processing unit 3 via the HMI data downloader 29 And an integrated control unit 2 for providing an HMI (Human Machine Interface) according to the HMI.

1, the integrated control board 2 includes an input terminal 1 for receiving an analog voltage, an analog current or a digital signal, and an analog current input through the input terminal 1 to a central processing unit 3 A first input / output unit 5 for amplifying a voltage output from the analog input current / voltage conversion unit 5 or adjusting an offset of an output voltage, A voltage level adjusting circuit 7, an analog voltage input 9 for receiving an analog voltage input through the input terminal 1, an amplifier for amplifying a voltage output from the analog voltage input 9 or adjusting an offset of an output voltage A second voltage level adjusting circuit 11, a digital signal input unit 13 for receiving a digital signal input through the input terminal 1, a digital signal input unit 1 A third voltage level regulating circuit 15 for upwardly or downwardly bringing the digital signal outputted from the central processing unit 3 to be recognizable and pulling down the floated digital signal so that the central processing unit 3 can recognize it, An analog voltage / current output unit 17 for outputting analog voltage or analog current according to the control logic of the central processing unit 3, a digital signal output unit 17 for outputting the digital control logic of the central processing unit 3, An output terminal 21 for connecting an output terminal of the analog voltage / current output unit 17 and the output terminal of the digital signal output unit 19 to an external device; And outputs the control logic to the analog voltage / current output section 17 and the digital signal output section 19 after processing the analog voltage and the digital signal inputted from the voltage level adjustment circuits 7,May be formed of a rib (3).

The first and second voltage level adjusting circuits 7 and 11 may be configured as an amplifying circuit or an offset adjusting circuit and the third voltage level adjusting circuit 15 may be a buffer, It is preferable that the output terminal is equipped with a pull-up resistor or a pull-down resistor.

The analog voltage / current output unit 17 may use a digital-analog conversion circuit (DAC) capable of generating an analog voltage of 0 V to 10 V according to the control logic of the central processing unit 3, A constant current IC which generates a constant current according to the control logic can be used.

Meanwhile, as a method of downloading an executable file to the central processing unit 3, a drive source program is designed as shown in FIG. 2, and then the drive source program is compiled through an MCU compiler.

At this time, when the compiling process is completed, a HEX file is generated as an MCU executable file. The HEX file can be downloaded to the memory of the central processing unit 3 through a download-only program driven by a PC (Personal Computer).

In order to download the HMI data to the central processing unit 3, as shown in FIG. 2, the HMI data generated through the PC environment HMI data generation program is converted into an image file (JPG) through a dedicated conversion program do.

Next, the image file is downloaded to the image memory of the central processing unit 3 through a download-only program running on the PC.

An inverter 23 driven in accordance with a control signal output from the analog voltage / current output section 17 or the digital signal output section 19 is mounted on the output terminal block 21.

Between the firmware downloader 27 and the HMI data downloader 29 is provided a communication conversion unit 31 for converting a communication protocol and enabling communication between the firmware downloader 27 and the HMI data downloader 29 and the central processing unit 3 Is mounted.

The communication conversion unit 31 converts the USB communication method into a UART communication method.

1, a communication module 33 is mounted in the central processing unit 3 so that communication is established between the central processing unit 3 and the external terminal 22, and the communication module 33 is connected to an RS485 transceiver Transceiver) or a CAN (Controller Area Network) communication.

In addition, the central processing unit 3 may be additionally provided with a display unit 35 for providing an HMI (Human Machine Interface), and the display unit 35 may be a TFT LCD.

The central processing unit 3 may be provided with a button 37 or a touch sensor 39 for inputting a digital signal to the central processing unit 3.

In addition, the central processing unit 3 may output a digital signal to the buzzer sound generating unit 24 to generate an alarm signal to the outside.

The power input unit 41 is provided with a power conversion unit 43 for down converting the voltage output from the power input unit 41 into a constant voltage, Respectively.

Further, the present invention may be equipped with a buzzer sound generator 24 for generating a buzzer in accordance with the control signal of the central processing unit 3. [

An embodiment in which the present invention is applied to a fan control system of a marine engine room will be described with reference to FIG.

The present invention utilizes analog input / output functions and digital input / output functions.

First, while sensing the pressure and temperature of the engine room, connect the output terminal of the pressure sensor and the temperature sensor, which output analog current (0 ~ 20mA) according to the sensed pressure and temperature, to the input terminal block (1) The inverter 23 is connected to the output terminal 21 for control.

At this time, the speed control of the inverter 23 can be controlled to an analog voltage (0 to 10 V) output from the analog voltage / current output unit 17. [

The inverter 23 outputs status information according to speed control as an analog current (0 to 20 mA). The central processing unit 3 converts the analog current output from the inverter 23 into an analog input current / voltage conversion unit 5 to receive the state of the inverter 23 or the VFD 25 in real time.

The central processing unit 3 controls the fan motor connected to the inverter 23 or the VFD 25 to rotate in the forward direction or the reverse direction according to the digital signal output from the digital signal output unit 19 19). ≪ / RTI >

4, when the integrated control board 2 is switched to the slave mode, the integrated control board 2 is interlocked with another integrated control board 2 in the master mode through RS485 communication, Monitoring can be performed at the place or operation control of the external device can be performed.

In addition, the present invention has a digital signal input / output unit (13, 19) capable of receiving and outputting a digital signal, but can not receive an AC signal, so a relay board And the function can be extended by connecting the relay board and the present invention to RS485 communication.

As shown in FIG. 4, the integrated control board 2 according to the present invention can be set to a master mode or a slave mode. When the integrated control board 2 is set to the master mode, It can accept and drive the load.

In addition, when the integrated control board 2 is set to the slave mode, a control command can be transmitted to the integrated control board 2 remotely set to the master mode or a monitoring result can be transmitted.

In addition, the integrated control board 2, which is switched to the master mode, can be operated and extended by being connected to the relay board composed of the AC / DC input switch, and can be connected to another integrated control board 2) and can be expanded in operation.

As shown in FIG. 5, the integrated control board 2 equipped with the present invention can have a PID (Proportional Integral Derivative) control configuration. For example, it is possible to appropriately manage the temperature and pressure of the engine room, Speed control of the VFD 25 may be performed by using the PID control method according to the set temperature and pressure conditions.

An embodiment of controlling the RPM of the fan (FAN) using the PID control method is as shown in FIG.

The embodiment shown in FIG. 6 is a method of controlling the RPM of the fan, and is classified into an AUTO MODE, a MANUAL MODE, a BYPASS MODE, and a CUSTOMIZE.

First, the AUTO MODE is turned on (S101). If the currently set mode is the AUTO mode (S103), the temperature sensor data and the pressure sensing data from the temperature sensor and the pressure sensor using the A / D converter Data is received (S105)

If the mode is the fan control mode (S107), the PID is controlled to receive the sensing data from the temperature sensor and the pressure sensor, and then the RPM of the fan (F11) is adjusted by referring to the received data (S111) 6, temperature and pressure of the engine room and control information of the fan are displayed (S113)

On the other hand, if it is not the fan control mode, as shown in FIG. 6, the temperature and pressure of the engine room and the control information of the fan are displayed.

On the other hand, if the currently set mode is the manual mode, the option value for the fan control and the RPM of the fan are input as shown in FIG. 6 (S201) (S203, S205)

Next, the PID is controlled (S207), the RPM of the fan is controlled to drive the fan (S209), and then the temperature and pressure of the engine room and the control information of the fan are displayed, as shown in FIG. (S211)

If the currently set mode is the bypass mode, as shown in FIG. 6, an option value for the fan control is inputted (S303), and then the RPM of the fan is controlled to rotate the fan (S305) At the same time, the rotation state of the fan is displayed (S307)

If the currently set mode is the user mode, an option corresponding to the user mode is set (S401), APPLY and SAVE are performed (S403). (S405)

8 is a diagram illustrating a communication interface method of the integrated control board 2, which is a method of upgrading a program through a PC-driven download program and a communication interface method with the external terminal 22. [

As shown in FIG. 8, the method of upgrading the program through the PC-driving download program and the communication interface method between the external terminal 22 and the external terminal 22 includes steps S501 and S502 of checking the signal received by the integrated control board 2 through the communication unit, (S503) whether the current mode is the memory upgrade mode or the external terminal 22 communication mode by analyzing the received signal. If the current mode is the memory upgrade mode, performing the firmware upgrade (S505) A step S507 of checking the received data and performing and completing an operation according to the upgraded firmware if the firmware upgrade is completed, a step S509 of waiting until a communication unit of the integrated control board 2 receives a signal, And analyzing the received signal to determine whether the current mode is a memory upgrade mode or an external terminal 22 communication mode In step S503, if the current mode is the communication mode of the external terminal 22, the command for the communication mode of the external terminal 22 is confirmed and the command is executed (S511, S513) 2) (S509) of waiting until a communication unit of the communication unit 2 receives a signal.

The VFD integrated control board having real-time signal processing and HMI function of various analog / digital input / output signals according to the present invention having such a configuration integrates PLC function and HMI function and outputs analog voltage, current or digital signal To drive the VFD to control the RPM of a fan motor or the like coupled with the VFD.

In addition, since the RPM of the fan motor can be adjusted by receiving feedback data from the temperature sensor and the pressure sensor provided in the engine room together with the fan motor, the temperature and pressure of the engine room can be maintained at a predetermined level. By increasing or decreasing the speed depending on the situation, it is possible to save the electricity consumed in driving the fan.

In addition, since analog voltage, current, or digital signals can be input, the VFD can be controlled based on the sensed data after receiving the sensed data from the pressure sensor and the temperature sensor.

In addition, the present invention has an advantage that a user can easily use the present invention by using the HMI method.

Accordingly, by integrating PLC and HMI, the present invention not only enables high-priced modules such as PLC and HMI to be low-priced, but also enables firmware to be reprogrammed, thereby enabling utilization and service in various industrial fields.

Further, since the present invention can be manufactured in a small size, it can be installed in a narrow space, and thus it has a peak point that the space utilization is excellent.

In addition, since real-time input signal processing is possible, it can be applied to various application fields, and it is advantageous that precise control is possible by using PID control logic.

1. Input terminal block 2. Integrated control board
3. Central Processing Unit 5. Analog Input Current / Voltage Conversion Unit
7. First voltage level adjustment circuit 9. Analog voltage input section
11. Second voltage level adjustment circuit 13. Digital signal input section
15. Third voltage level adjustment circuit 17. Analog voltage / current output section
19. Digital signal output section 21. Output terminal block
22. External terminal 23. Inverter
24. Buzzer sound generator 25. VFD
27. Firmware Downloader 29. HMI Data Downloader
31. Communication conversion unit 33. Communication module
35. Display section 37. Button
39. Touch sensor 41. Power input
43. Power conversion section

Claims (4)

A firmware downloader 27 for downloading firmware to the central processing unit 3 provided in the integrated control board 2;
An HMI data downloader 29 for downloading HMI (Human Machine Interface) data to the central processing unit 3 equipped in the integrated control board 2;
And an analog voltage or an analog current or a digital signal according to a program of the firmware downloaded to the central processing unit 3, processes the signal, and outputs an analog voltage, a current, or a digital signal. The HMI data downloader 29, And an integrated control unit 2 for providing an HMI (Human Machine Interface) in accordance with the HMI data downloaded to the personal computer 3,
The integrated control unit 2 includes an input terminal 1 for receiving an analog voltage, an analog current, or a digital signal,
An analog input current / voltage converting unit 5 for converting an analog current inputted through the input terminal 1 into an analog voltage so that the central processing unit 3 can detect it,
A first voltage level adjusting circuit (7) for amplifying a voltage output from the analog input current / voltage converting part (5) or adjusting an offset of an output voltage,
An analog voltage input 9 for receiving an analog voltage input through the input terminal 1,
A second voltage level adjusting circuit (11) for amplifying a voltage output from the analog voltage inputting part (9) or adjusting an offset of an output voltage,
A digital signal input unit 13 for receiving a digital signal input through the input terminal 1,
A third voltage level for lowering the digital signal output from the digital signal input unit 13 upward or downward so that the central processing unit 3 can recognize the digital signal and for reducing the floating digital signal to be recognizable by the central processing unit 3, The adjustment circuit 15,
An analog voltage / current output unit 17 for outputting analog voltage or analog current according to the control logic of the central processing unit 3,
A digital signal output unit 19 for outputting the digital control logic of the central processing unit 3,
An output terminal 21 for connecting an output terminal of the analog voltage / current output unit 17 and the digital signal output unit 19 to an external device,
The analog voltage / current output section 17 and the digital signal output section 17 process the analog voltage and the digital signal input from the first and second voltage level adjustment circuits 7, 11 and 15 according to the configuration of the firmware stored in the memory. And a central processing unit (3) for outputting control logic to the control unit (19). The VFD integrated control board has real time signal processing and HMI functions of various analog / digital input / output signals.
The method according to claim 1,
A communication module 33 is mounted in the central processing unit 3 so that communication is established between the central processing unit 3 and the external terminal 22 and the communication module 33 is connected to an RS485 transceiver or a CAN VFD integrated control board with real-time signal processing and HMI function of various analog / digital I / O signals.
The method according to claim 1,
Between the firmware downloader 27 and the HMI data downloader 29 is provided a communication conversion unit 31 for converting a communication protocol and enabling communication between the firmware downloader 27 and the HMI data downloader 29 and the central processing unit 3 VFD integrated control board with real-time signal processing and HMI function of various analog / digital input / output signals.
The method according to claim 1,
The central processing unit 3 is additionally equipped with a display unit 35 for providing an HMI (Human Machine Interface)
The central processing unit 3 is provided with a button 37 or a touch sensor 39 for inputting a digital signal to the central processing unit 3. The real time signal processing of various analog / digital input / VFD integrated control board.
KR1020150054300A 2015-04-17 2015-04-17 Vfd integrated control board having an realtime process of various analog/digital input/output signal and hmi function KR101536119B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180041006A (en) * 2016-10-13 2018-04-23 노재명 Exclusive controller based information and communication technologies
KR20180041002A (en) * 2016-10-13 2018-04-23 노재명 Flexible control system based information and communication technologies
US10120362B2 (en) 2015-06-02 2018-11-06 Lsis Co., Ltd. Output adjustment device of analog output module

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KR101078905B1 (en) * 2009-05-21 2011-11-01 엘에스산전 주식회사 Smart cabinet panel and method for building management using the same panel
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KR100799976B1 (en) * 2007-10-18 2008-02-01 주식회사 대산시스템 Management system of direct digital controller and the method for managing thereof
KR101078905B1 (en) * 2009-05-21 2011-11-01 엘에스산전 주식회사 Smart cabinet panel and method for building management using the same panel
KR101264403B1 (en) * 2012-12-11 2013-05-14 주식회사 윈텍 Integrated remote terminal unit for distributed control system
KR101334306B1 (en) * 2013-03-21 2013-11-29 주식회사 다인산전 Distribution board, motor control panel and cabinet panel with function of tripping power through sensing of arc flash

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10120362B2 (en) 2015-06-02 2018-11-06 Lsis Co., Ltd. Output adjustment device of analog output module
KR20180041006A (en) * 2016-10-13 2018-04-23 노재명 Exclusive controller based information and communication technologies
KR20180041002A (en) * 2016-10-13 2018-04-23 노재명 Flexible control system based information and communication technologies
KR101865146B1 (en) * 2016-10-13 2018-06-08 노재명 Exclusive controller based information and communication technologies
KR101865136B1 (en) * 2016-10-13 2018-06-08 노재명 Flexible control system based information and communication technologies

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