KR20100013005A

KR20100013005A - Factory automation system that using ethernet

Info

Publication number: KR20100013005A
Application number: KR1020080074482A
Authority: KR
Inventors: 최무영
Original assignee: 최무영
Priority date: 2008-07-30
Filing date: 2008-07-30
Publication date: 2010-02-09

Abstract

PURPOSE: A factory automation system using Ethernet is provided to control a sensor and an actuator of manufacturing facilities based on ATM128. CONSTITUTION: A controller(1) is installed at every manufacturing line. The controllers receive a signal from a sensor and an actuator of the manufacturing line. The controller check states of control and a line based on ATM128. An Ethernet switch(2) based on the TCP/IP(Transmission Control Protocol/Internet Protocol) connects the controller by a network. A main computer(3) receives data from the controller through an Ethernet switch or an internet. The main computer transmits a control command.

Description

Automation facility control system using Ethernet {FACTORY AUTOMATION SYSTEM THAT USING ETHERNET}

The present invention relates to an automation facility control system using Ethernet, and more particularly, to an automation facility control system using Ethernet configured to control a small automation facility at a low cost.

In general, the automation equipment is configured to automatically perform a series of processing according to a predetermined flow by combining a plurality of functional devices, and efficiently processes manufacturing, assembly, and processing through the control of each device and the collection of information. To do it.

Plant and Factory Automation includes rolling control in the steel industry, chemical process control, mining control in the mining industry, casting and line control in the automotive industry, robot control in the mechanical industry, and water and substation control. It is applied to the control of all industries such as control, unloading control and building control.

In addition, the factory automation facility has a hard wired method using an electrical sequence that physically connects relay boards, sequences and switching means, and a soft wired method using server, client communication and logic control. In the representative softwired system, a PLC (Programmable Logic Control) control device is used.

4 is an example of an automation facility generally configured using a PLC and a plurality of server and client systems, and is composed of one or more PLCs, a server system and a database, and is configured to control the automation of the facility.

In recent years, the PLC has realized high speed and high functionality of a 64-bit microprocessor and a dedicated integrated semiconductor device (LSI), and a combination of a transmission technology and a computer communicating by optical fiber is fundamental. It realizes loop control of position control and PID control (Proportional Integral Differential Control), and is based on new language and diversification of peripheral devices (Man Machine Interface or Human Machine Interface) (hereinafter referred to as 'HMI / MMI'). The trend is to use technology.

Here, the PLC is a kind of microcomputer that assembles an integrated circuit (IC) by applying computer technology and sequence technology that specializes in the operation of logic circuits, and handles the sequence and the numbers '1' and '0'. It includes and controls the operation of the installation device, and is usually input to the logic program by a handy loader and a graphic loader (graphic loader).

However, as described above, if a large number of expensive PLCs and servers are installed in order to control the factory automation facility, the cost of the above-described automation facility is too high, and thus cannot be installed in a small factory. There is a problem that the productivity in the extremely low.

Accordingly, an object of the present invention is to solve the above problems, and in the case of small-scale automation facilities, develop a reliable device at a low price that can process PC and TCP / IP-based production information, and even factory automation in a small factory. It is to provide an automated facility control system using Ethernet to improve the productivity by installing a cheaper facility.

In order to achieve the above object, the present invention provides a plurality of controllers based on ATM128, which are installed in each production line and configured to receive signals from sensors and actuators of the production line so as to check the status of the control and the line. A TCP / IP-based Ethernet switch installed to connect the controller to a network to enable data communication; and a main computer connected to the Ethernet switch or the Internet to receive data from the controller and transmit control commands. It is characterized by the configuration.

As described above, the present invention can control the sensors and actuators of the production equipment based on ATM128, and by configuring the controller installed in each production line to enable internet communication with the main computer based on TCP / IP, such as a small factory It is an advantage that producers can build production automation facilities at low cost.

1 and 2 is a schematic diagram showing an automated facility control system using Ethernet according to the present invention, one ATM 128 installed in each production line of the automation facility configured to check the control of the production line and the status of the line, etc. Based on a plurality of controllers (1), a TCP / IP-based Ethernet switch (2) installed to connect the controller (1) to the network to communicate data, and the Ethernet switch ( 2) It consists of a main computer (3) connected via the Internet (if the installation location is near) or the Internet (if it is a remote location) to receive data from the controller and send control commands.

Of course, the Ethernet switch 2 may be replaced with an Ethernet hub, and a server computer 4 supporting a separate TCP / IP is required to be connected to the Ethernet switch 2 through the Internet.

The controller 1 was developed based on ATM128 in order to manufacture at a low price, and the controller 1 is provided with a display device such as an LED, an LCD, etc. to display the current situation of the production line.

More detailed configuration of the controller (1) is using ATM128 as a CPU as shown in Figure 3, the analog and digital ports are installed so that analog and digital signals of the production line IN / OUT, Ethernet switch Ethernet port for connection, LED for displaying the status of production line (for example, 4 ㅧ 7 segment LED) and LCD, and memory (at least 32K) are installed.

In addition, since the RTC (REAL TIME CONTROLLER) is installed for real-time processing of data, the above-described control of ATM128, each port, and display devices such as LEDs and LCDs is performed by a general control program.

Referring to the operation and effect of the present invention as described above, when the work is made in each production line installed in the production facility, a signal is input to the controller 1 from the sensors and actuators SA installed in each production line.

That is, a signal generated from a sensor and an actuator SA during a production operation in a production line is input. For example, when a signal for detecting an object in the sensor is input to the controller 1, the sensor 1 detects the signal. Will be sent.

The detection signal transmitted from the controller 1 is transmitted to the main computer 3 through the Ethernet switch 2 and the control signal according to the detection signal is transmitted from the main computer 3.

In addition, the display device of the controller 1 displays contents such as numbers according to the detection of the sensor. For example, the contents to be displayed by the controller 1 in the production line are targets for each production line. In terms of numbers and current outputs, the sensors update the numbers in real time each time the sensor senses the product, as well as the target number and current output on the display (LED or LCD).

Of course, the information displayed on the controller 1 is the same on the monitor of the main computer 3, so it is very easy to know the current state of the production line at a remote location and to be able to control, so that in a small factory It is easy to automate production.

1 is a conceptual diagram illustrating an automated facility control system using Ethernet according to the present invention;

Figure 2 is a schematic diagram showing a state applied to the production line in Figure 1,

3 is a block diagram showing a controller in FIG. 1;

4 is a schematic block diagram showing a factory automation facility constructed using a general number of PLCs and servers.

Explanation of symbols on the main parts of the drawings

1: controller 2: Ethernet switch

3: main computer 4: server computer

SA: Sensors and Actuators

Claims

One controller is installed in each production line, and it is installed to connect the above controllers to a network with a number of controllers based on ATM128 configured to receive signals from sensors and actuators of the production line and check the status of the control and the line. TCP / IP-based Ethernet switch to enable data communication, and Ethernet using the Ethernet switch or the main computer connected to the Internet to receive data from the controller and send control commands Facility control system.

The method of claim 1,

The controller includes an ATM128 used as a CPU, an analog and digital port controlled by the ATM128 and installed so that analog and digital signals of a production line are IN / OUT, an Ethernet port for connection with the Ethernet switch, Automated facility control system using Ethernet, characterized by consisting of a display device for displaying the current status of the production line, and RTC controlled by the ATM128 and installed for real-time processing of data.