CONTROLLER OF TECHNOLOGICAL PROCESS MANAGEMENT USING EXTERNAL ELECTRONIC AND MECHANICAL DEVICES Russian patent published in 2022 - IPC G05B15/02 

FIELD: computer technology.

SUBSTANCE: invention relates to the field of computer technology for regulating and controlling general-purpose systems, in particular to a controller for technological process management using external electronic and mechanical devices. The controller contains: a microprocessor; an electrically erasable reprogrammable permanent storage device (hereinafter – EERPSD) made with the possibility of storing software and data; an SD card reader; ADC and DAC; transistor cascade amplifiers with increased maximum output current of up to 30 mA, controlled by the microprocessor via DAC and made with the possibility of providing control of external electronic and mechanical devices for technological process management; two isolated RS-485 interfaces made with the possibility of receiving and transmitting digital signals between external sensors and/or electronic and mechanical devices and/or external computing devices for controlling the operation of the technological process, transmitting information to users and coordinating work with external computing devices; a pulse-transformer internal power supply unit with separate windings to provide galvanic decoupling of internal power supply circuits and organize independent power supply of the mentioned two isolated RS-485 interfaces; an internal power supply circuit divided into stabilized and unstabilized power supply, made with the possibility of providing power to the microprocessor, EERPSD, ADC, DAC and transistor cascade amplifiers; and a device for short circuit (hereinafter – SC) protection, made with the possibility of protecting internal components of the controller for control of external electronic and mechanical devices from SC and limiting pulsations of the measured DC voltage. In this case, the microprocessor is made with the possibility of receiving signals via an analog-to-digital converter (hereinafter – ADC) and/or via two isolated RS-485 digital interfaces from external sensors and/or electronic and mechanical devices, generating control signals in response to received signals, and transmitting generated signals via a digital-to-analog converter (hereinafter – DAC) and/or via the mentioned RS-485 interfaces to external electronic and mechanical devices for controlling their operation and/or controlled technological process. In this case, the generation of control signals is performed by software using data stored on EERPSD. The SD card reader is made with the possibility of reading data from removable SD cards to update software, make changes to data stored on EERPSD and archive data from EERPSD. In this case, ADC and DAC contain analog, digital inputs/outputs and relay outputs made with the possibility of: a) receiving signals from external sensors and/or electronic and mechanical devices and converting received signals into digital values of measuring physical quantities; b) transmitting the mentioned digital values to the mentioned microprocessor; and c) receiving control signals from the mentioned microprocessor, converting them into analog signals and transmitting them to external electronic and mechanical devices to change their operating mode and controlled technological process. All inputs of the management controller for external electronic and mechanical devices contain four independent measurement input circuits, including a current measurement circuit using a shunt resistor, a voltage measurement circuit with a switchable divider and two current measurement circuits, where the mentioned four circuits are made with the possibility of measuring each channel with the possibility of switching them depending on a sensor, electronic or mechanical device connected to the input. In this case, the type of the measured signal is configured via the controller software, the measurement circuits are protected from voltage pulse interference by means of TVS protective diodes, and are made with the possibility of controlling a P-channel field-effect transistor with a specified voltage to protect against increased current through the shunt.

EFFECT: increase in fault tolerance while simultaneously ensuring the protection of components of the controller for external electronic device management in terms of noise immunity from external influences; optimization and scalability of the controller for technological process management in terms of ensuring the possibility of changing the component composition of the controller.

10 cl, 1 dwg