KEYWORDS: Control systems, Sensors, Air temperature, Temperature control, Fuzzy logic, Web services, Databases, Temperature sensors, Internet, Connectors
The article discusses intelligent ways to regulate room temperature. It is shown how the project architecture is built and the tools for its implementation are selected using intelligent algorithms, mainly fuzzy logic. Recommendations are given for the selection of software and hardware for implementing microclimate control systems. The hardware can be implemented using a NodeMCU board with a built-in ESP8266 module, and DS18B20 integrated temperature sensors connected to it. It is recommended to program the device in the Arduino IDE. The software part can also be implemented as a web service and a database connected to it. The web service is implemented using the Flask framework. The database is implemented in the MySQL environment. Nginx is selected as the web server for deploying the web service. The results of this work can be used in various rooms with installed heating, air conditioning and ventilation devices to maintain optimal microclimate conditions with minimal energy costs.
KEYWORDS: Control systems, Industry, Chemical elements, Reliability, Temperature control, Process control, Signal processing, Foam, Error control coding, Displays
The issues of analysis of the control loops of technological schemes of papermaking production for criticality are considered. The definition of the control loop's criticality is given. The classification of control loops by criticality is proposed. Examples of the most critical control loops are demonstrated. It is shown that the largest contribution to the error of the control loops is made by control valves. An algorithm for selecting control valves for critical control loops is proposed. The achievable indicators of the economic effect for the most critical loops for the technology are shown. The lines of loop's development depending on the trends of technology development are generalized. Taking into account the generalization of trends in the development of control loops, promising directions for the development of control valves are shown both as part of the measurement loops critical for the technology, and as part of the control loops common to the technology.
The article provides a review of the current state of the art of using mold sleeves in continuous casting machines. It is shown that continuous casting technology continues to actively develop. The target requirements that mold sleeves must provide include thermal conductivity and heat and wear resistance. The main achievements in the field of increasing thermal conductivity and heat and wear resistance are analyzed. It is shown that many of the methods used are already exhausted, and new approaches are required based on the study of deep properties, in particular the structural and lattice thermal conductivity of copper. As a first step, their calculations and modeling can be carried out.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.