RU2231103C2 - Method for controlling manufacturing equipment - Google Patents

Abstract

FIELD: automatic systems for controlling manufacturing equipment.

SUBSTANCE: method comprises steps of processing signals of each control board in setter for setting operation modes of mechanisms controlled by means of concrete control board; applying signals of first outlets of said concrete control board to unit for program-logic control; applying signals form second outlets of said concrete control board together with signals from unit for program-logic control for controlling display units in the form of code messages to respective control board for controlling display units of said control board.

EFFECT: lowered cost of used apparatuses.

5 cl, 1 dwg

Description

The invention relates to the field of automatic control systems for various technological equipment, in particular automatic lines, modular machines and machines for machining.

A known method of controlling technological equipment is that the signals from sensors and control panels are processed by a program-logic control unit, the output signals of which are used to control actuators and indication elements of panels (V.V. Krylenko et al. Control of automatic lines with using computers. - M.: Mechanical Engineering, 1983, p. 16-17, Fig. 1).

The disadvantage of this method is that to ensure autonomous operation of mechanisms at each equipment position, they use their own control panel, which has an individual circuit and design solution, including the number of control buttons and wires required to control the mechanisms of this position, both for connecting buttons and for controlling remote control indication elements. So the remote control that controls L mechanisms contains 2L control buttons, 2L display elements and 2L wires for communication with the controller, which reduces the reliability of the device due to the large number of contact connections. All this complicates the design of the device and leads to an increase in the complexity in the design and manufacture of control devices.

The purpose of the invention is the creation of a method for controlling technological equipment, which reduces the hardware costs of the control system for this equipment and increases its efficiency.

This goal is achieved by the fact that the signals from the sensors and control panels are processed by a programmable controller, the output signals of which are used to control the actuators and display elements, and the signals from each of the control panels are pre-processed by the master of the operating modes of the mechanisms controlled from this panel, the signals from the first outputs of which are fed to the program-logical control unit, and the signals from the second outputs together with the signals from the program-logical control unit for controlling the display elements in the form of a code chip is supplied to the remote control to operate elements of the display panel.

Advantageously, the operating mode adjuster of the mechanisms controlled from this remote control is executed in the form of a program-generated mode counter, the state of which is changed from the control panel, for example, by two mode selection buttons, and the on / off execution of the established mode is also carried out by the control panel, for example, by two buttons turning on and off the execution of the set mode.

In a preferred embodiment, the control signals of the display elements in the form of a sequence of code packets are transmitted to the control panel, where they are decrypted, stored and then directly act on the display.

In this case, the display elements on the control panels are arranged in the form of three (vertical) rows, information on the number of the operating mode is displayed on the display elements of the first row, and information on the status of equipment controlled in this mode is displayed on the display elements of the second and third rows.

In addition, information is displayed on the display elements in the second and third rows with a steady or flashing light, depending on the correspondence or inconsistency of the actual state of the equipment with the state (equipment) specified by this mode.

The drawing shows the application of the method corresponding to the invention for controlling process equipment. The control system of the proposed method, for example, an automatic line is formed from:

- programmable controller 1,

- position sensors of mechanisms 2.1-2.K, (where K is the total number of sensors), the signals from which are fed to the inputs of the program-logical control unit 10,

- actuators 3.1-3.M, (where M is the total number of actuators), which are controlled from the outputs of the program-logical control unit 10,

- control panels 4.1-4.N, (where N is the number of control panels), on each of which set:

- buttons 5.1 and 5.2 for selecting the operating mode and buttons 5.3 and 5.4 for turning on and off the execution of the set mode, the signals from which are fed to the inputs of the setter 9 operating modes of the mechanisms of this remote control, information from the first outputs 12 of which are fed to the input of the program-logical control unit 10, and information from the second outputs 13 is fed to the input of the switch 11, the second input of which serves information from the output of the program-logical control unit 10,

- decoder 6, the input of which serves information from the output of the switch 11,

- register 7, which stores the information received at its input from the output of the decoder 6,

- display elements 8, controlled from the output of the register 7. All display elements, such as LEDs, are arranged in a matrix of 3 rows and L lines, where L is the number of control modes. Each mode is brought into line with a string of three display elements, and by turning on the 1st display element indicate the selected mode, and two other display elements indicate the status of equipment controlled in this mode.

Implemented by the proposed method, the control system can have the following control modes: automatic, semi-automatic, group (control of a group of mechanisms) and a series of adjustment modes (each of which can be used to control one or more mechanisms). Any other modes necessary for the operation of specific equipment are possible, however, the total number of modes cannot be more than the number of display elements 8, confirming the correct choice of the required mode.

The device operates as follows. The selection of the operating mode of the device is carried out by pressing the buttons 5.1 and 5.2 (not shown conditionally), which changes the state of the mode counter, which is included in the setter 9 operating modes. The mode counter number is transmitted from the output 13 of the mode dial 9 through the switch 11, the decoder 6 and the register 7 to the 1st row of indication elements 8, in which the number of the set mode is indicated.

After setting the mode by pressing the buttons 5.3 “Turn on the execution of the set mode” or 5.4 “Turn off the execution of the set mode” (not shown conditionally) in the master 9 operating modes form a word with a length of 2L bits (where L is the number of control modes) containing information in the position code about turning on (bits with numbers 1 through L) or turning off (bits with numbers L + 1 through 2L) the established mode, this word is fed to the input of program-logic control unit 10, in which, using signals from sensors 2, commands are generated on / off values of the corresponding actuators 3 and transmit through the switch 11, the decoder 6 and the register 7 information about the state of the mechanisms to the 2nd and 3rd rows of display elements 8. In the switch 11, the information received at its inputs is divided into fragments with the same number of bits, for example bytes, and transmitted to the input of the decoders 6 in the form of a sequence of words consisting of the address part (fragment number) and the information part (fragment content). The decoder 6 and the register 7 are implemented either hardware or software, depending on the presence of the microcomputer in the console.

Thus, the goal - reducing hardware costs for the control system - is achieved due to the following differences from the prototype:

- fewer controls on each remote control,

- changes in their functional purpose,

- introducing into the software setter operating modes of the mechanisms of each console,

- introducing into each console an indication of the mode number, a decoder, a memory register,

- introducing into the software byte transfer of information from the controller to the display elements of the control panels.

In operation at VAZ control systems for technological equipment built according to the claimed method, control panels with the following parameters are used:

- number of modes - 24

- number of buttons for setting modes - 2

- number of buttons for executing modes - 2

- number of display elements - 72

- the number of bits in the address part

words transmitted to the consoles - 4

- the number of bits in the information

parts of the word transmitted to the consoles - 8

- number of inputs and outputs

controller for processing one remote control - 16

The decrease in the number of controller inputs / outputs for communication with each of the control panels is determined by the formula 4L-16, (where L is the number of control modes).

Claims (5)

1. A method of controlling technological equipment, for example, automatic lines and modular machines, which consists in the fact that signals from sensors and control panels are fed to the inputs of a programmable controller, the output signals of which are used to control actuators and display elements, characterized in that the signals from each of the control panels is fed to the mode dial of the mechanisms controlled by this remote control, the signals from the first outputs of which are fed to the program-logical unit ION and second output signals together with the signals from the unit software and control logic, in the form of code chips, is fed to the control controls the display of the console. 2. The method according to claim 1, characterized in that the mode dial of the mechanisms controlled from this remote control is executed in the form of a program-generated mode counter, the state of which is changed from the control panel, for example, by two mode selection buttons, and turning on and off the execution of the set modes are also carried out from the control panel, for example, by two buttons for switching on and off the execution of the set mode. 3. The method according to claim 2, characterized in that the control signals of the display elements in the form of a sequence of code packets are transmitted to the control panel, where they are decrypted, stored and then directly act on the display elements. 4. The method according to claim 3, characterized in that the display elements on the control panels are arranged in the form of three vertical rows, while the information on the operating mode number is displayed on the display elements of the first row, and information on the status of the equipment is displayed on the display elements of the second and third rows managed in this mode. 5. The method according to claim 4, characterized in that the display elements in the second and third rows display information with a steady or flashing light, depending on the correspondence or inconsistency of the actual state of the equipment with the state of the equipment specified by this mode.