scholarly journals Prototype Implementation of Temperature Control System with CAN and FreeRTOS on STM32F407 Discovery Boards

10.29007/w9nq ◽  
2019 ◽  
Author(s):  
Venkat Margapuri ◽  
Mitchell Neilsen
Keyword(s):  
Control System ◽  
Open Source ◽  
Temperature Control ◽  
Low Cost ◽  
Temperature Control System ◽  
Area Network ◽  
Prototype Implementation ◽  
Set Up ◽  
Classroom Use ◽  
Cost Components

The focus of the paper is to provide a prototype implementation of a temperature control system using the open-source real-time operating system FreeRTOS and communication via a Controller Area Network (CAN). By using low-cost components and open-source software on low-cost STM32F407 Discovery Boards with ARM Cortex M4 processors, this prototype is an ideal target for classroom use. The Discovery boards provide built-in support for 2 CAN buffers, but no transceivers. This paper presents the implementation of a Master-Slave architecture with CAN communication using LibOpenCM3 libraries with FreeRTOS and a more general CAN implementation using Hardware Abstraction Libraries (HAL). The paper further discusses the concepts of CAN messaging and its parameters in detail to be applicable for anyone wanting to set up their own network. In addition to CAN communication between STM32F407 Discovery Boards, this paper also presents a prototype implementation of a temperature control system on STM32F407 Discovery boards showing use of most standard interfaces on the boards such as GPIO and I2C. It describes the hardware components of the system and the software implementation using a combination of HAL, LibOpenCM3, and FreeRTOS.

Granary Wireless Temperature Monitoring and Alarm System Based on DS18B20

2012 ◽  
Vol 220-223 ◽  
pp. 1625-1627 ◽  
Author(s):  
Xue Mei Wang ◽  
Guo Ping Li
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Measurement Data ◽  
Temperature Monitoring ◽  
Temperature Control System ◽  
Alarm System ◽  
Remote Transmission ◽  
Frequency Module ◽  
Set Up ◽  
Working Parameters

This paper introduces a Radio Frequency module based on the nRF905 all-digital granary wireless temperature monitoring system. The whole system adopts DS18B20 to measure the granary temperature, measurement data is processed by microprocessor MSP430 next, then carried out by the RF module nRF905 remote transmission, and displayed the measurement data through JHD1602. In addition to showing the temperature of the granary and alarming, the system can set up or modify the working parameters through keyword at control terminals. This system is characteristic of multi-point measurement, high-precision, wide rang of temperature monitoring, stability good and alarming timely, it may also apply in other related temperature control system, the versatility is very strong.

scholarly journals An educational fuzzy temperature control system

2020 ◽  
Vol 10 (3) ◽  
pp. 2463
Author(s):  
Peshraw Salam ◽  
Dogan Ibrahim
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Control Theory ◽  
Temperature Control ◽  
Low Cost ◽  
Temperature Control System ◽  
Control Engineering ◽  
Modern Control Theory ◽  
Soft Computing Techniques ◽  
Modern Control

Control engineering is one of the important engineering topics taught at many engineering based universities around the world in most undergraduate and postgraduate courses. The control engineering curriculum includes both the classical feedback based control theory and the state space theory. The modern control theory is based on the intelligent control algorithms utilizing the soft computing techniques, such as the fuzzy control theory and neural networks. Laboratory work is an important part of any control engineering course. The problem with the modern control theory laboratories is that it is essential to offer simple experiments to students so that they can easily put the complex theories they have learned in their courses into practice and see and understand the results. This paper describes the design of a low-cost fuzzy based microcontroller temperature control system using off the shelf products. The developed system should provide a low-cost fuzzy control experiment in the laboratories for students studying control engineering.

Precision Temperature Control System Based on PID Algorithm

2013 ◽  
Vol 389 ◽  
pp. 483-488
Author(s):  
Yong Lv ◽  
Chun Hui Niu ◽  
Yue Qiang Li ◽  
Qing Shan Chen ◽  
Xiao Ying Li ◽  
...  
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Temperature Control System ◽  
Thermo Electric ◽  
Pid Algorithm ◽  
Digital Pid ◽  
Voltage Signal ◽  
Precision Temperature ◽  
Precision Temperature Control ◽  
Set Up

A precision temperature control system that uses ATmega128 as the main control microcomputer is built. The temperature is sensed by a Pt100 thermistor, and then converted into the voltage signal by a temperature transmitter to the microcomputer. Two kinds of digital PID (Proportional-Integral-Differential) algorithms are adopted to control the output power of the thermo-electric cooler (TEC) automatically. The test results of the improved temperature control system show that the set-up time of this system is about 340s and the temperature control accuracy is up to±0.1°C.

Adaptive Temperature Control Systems Design

2012 ◽  
Vol 538-541 ◽  
pp. 3149-3153
Author(s):  
Yi Nan Kong
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Lower Cost ◽  
Low Cost ◽  
Systems Design ◽  
Temperature Control System ◽  
Cost Ratio ◽  
Control Systems Design ◽  
Site Control ◽  
And Storage

This paper presents an advanced low-cost temperature control system. The system takes the highest performance-cost ratio as its aim. It uses the low-cost 8-bit MCS-51 MCU and integrated temperature sensor to achieve the on-site control. A lower cost remote host computer can be used in this system. In the case of a relatively larger application, it can be expanded to a control system of master-slave distribution and utilize the computing and storage resources of the microcontroller. It realizes a wider range of temperature adjustment, and then put the state of the system into a database of the microcontroller to be ascertained later.

A soil temperature control system for plant research

1985 ◽  
Vol 15 (2) ◽  
pp. 472-474
Author(s):  
D. W. Waldren ◽  
M. K. McKinnis ◽  
W. C. Carlson
Keyword(s):  
Control System ◽  
Soil Temperature ◽  
Temperature Control ◽  
Low Cost ◽  
Water Bath ◽  
Experimental Designs ◽  
Temperature Control System ◽  
Soil Drainage ◽  
Plant Research ◽  
Labor Inputs

A soil temperature control system is described which allows control of soil temperature ± 1.1 °C, maintenance of water-bath level and pot placement during irrigation, and unrestricted soil drainage. The system also allows the use of a large number of pots (300) held at each soil temperature, with a capacity of three seedlings per pot, and is constructed of low-cost, readily available materials. This system facilitates the use of large experimental designs with relatively low labor inputs during the experiment.

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