scholarly journals Experiments on Temperature Control Using On-Off Algorithm Combined with PID Algorithm

2019 ◽  
Vol 16 (1) ◽  
pp. 5-9
Author(s):  
Mircea Dulău
Keyword(s):  
Temperature Control ◽  
Control Strategy ◽  
Temperature Sensor ◽  
Serial Communication ◽  
Automated System ◽  
Graphical Interface ◽  
Important Data ◽  
Pid Algorithm ◽  
Digital Temperature Sensor

Abstract The paper presents an automated system for the temperature control using a PIC microcontroller, a digital temperature sensor with I2C and a MOSFET as actuator. The control strategy is a proportional-integrative one, preceded by an on-off algorithm. The most important data is presented on a graphical interface. In order to send the parameters of the process and the command states to the computer, the serial communication is used.

The Research on Software of the Temperature Control of Motor Speed System

2010 ◽  
Vol 29-32 ◽  
pp. 349-353
Author(s):  
Jing Tang ◽  
En Xing Zheng
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Temperature Sensor ◽  
Temperature Control System ◽  
Motor Speed ◽  
Temperature Index ◽  
Digital Temperature Sensor ◽  
Microcontroller Unit

The paper designs a temperature control system based on AT89C51 and DS18B20. The design uses the DS18B20 digital temperature sensor as the temperature acquisition unit and the AT89C51 microcontroller unit to control them, not only have the advantages that easy to control and with good flexibility, but also can greatly enhance the controlled temperature index.

The Research of Temperature Measuring System Based on Digital-Temperature Sensor

2014 ◽  
Vol 595 ◽  
pp. 232-236
Author(s):  
Guo Jun Xu ◽  
Jing Zhang ◽  
Zhao Yang Yang ◽  
Ti Yin Li
Keyword(s):  
Data Acquisition ◽  
Temperature Sensor ◽  
Serial Communication ◽  
Temperature Data ◽  
Flow Chart ◽  
Measuring System ◽  
Temperature Measuring ◽  
Sensing Technology ◽  
Visualization Technology ◽  
Digital Temperature Sensor

The principle and the realization method of the temperature measuring system which based on the temperature data acquisition chip-DS18B20 and the serial communication chip MAX1480B were introduced. Hardware principle diagram, software flow chart and main subprogram are also given. The dependability of the system was strengthened by using visualization technology and ionic smoke sensing technology.

Research on Room Temperature Control of High Accuracy Constant Temperature Room Based on Cascade Control

2011 ◽  
Vol 48-49 ◽  
pp. 976-979
Author(s):  
Yun Zhun Fu ◽  
Xu Zhang
Keyword(s):  
Constant Temperature ◽  
Robust Stability ◽  
Temperature Control ◽  
Control Strategy ◽  
Room Temperature ◽  
High Accuracy ◽  
Cascade Control ◽  
Tracking Performance ◽  
Air Conditioning System ◽  
Pid Algorithm

DMC-PID cascade control strategy was adopted to apply on high accuracy constant temperature air conditioning system because constant temperature room had large inertia, delaying, a few interference factors characteristics. The construction type of DMC-PID cascade control system was designed and the prediction model of inner loop and outer loop was determined, and then MATLAB software was applied to simulate and compare robust stability, tracking performance, anti-jamming capability characteristics of DMC-PID cascade control algorithms with other algorithms. Through studies, the overshoot of DMC-PID cascade control of room temperature reduced 2% in comparison with the PID algorithm, but was much larger than that of DMC algorithm. Its regulation time was nearly the same to that DMC algorithm, but cut down 25% in comparison with the PID algorithm. At last, the simulation result showed DMC-PID cascade control strategy application on temperature control of high accuracy constant temperature room had feasibility and effectiveness, and the control strategy had strong robust stability, tracking performance, anti- disturbance ability characteristics.

Development of a Temperature Control System Based on DSP for a Real-Time PCR Instrument

2013 ◽  
Vol 462-463 ◽  
pp. 549-552 ◽  
Author(s):  
Hao He ◽  
Ji Hong Feng ◽  
Kai Xiang Li
Keyword(s):  
Control System ◽  
Real Time ◽  
Temperature Control ◽  
Real Time Pcr ◽  
Temperature Sensor ◽  
Wheatstone Bridge ◽  
Temperature Control System ◽  
Pid Algorithm ◽  
Voltage Signal ◽  
Temperature Signal

In this paper, we develop a temperature control system based on DSP chip TMS320F28335 for a small real-time PCR instrument. In the system, PWM waves generated by the DSP passes through power amplifier circuit to drive the peltier, and a pt100 is used as a temperature sensor to build a Wheatstone bridge sensing circuit. The temperature signal from the pt100 is converted into voltage signal. Then the voltage signal goes through the A/D converted module and the Position PID algorithm to adjust the duty cycle of the PWM waves. Experimental results show that the system's rising and cooling rate can reach 4°C/s with an accuracy of 0.2°C.

The Design of Temperature Control System for Rice Wine Fermentation

2013 ◽  
Vol 341-342 ◽  
pp. 660-663
Author(s):  
Sheng Yi Zhang ◽  
Xin Ming Wang
Keyword(s):  
Temperature Control ◽  
Temperature Sensor ◽  
Block Diagram ◽  
High Accuracy ◽  
Temperature Control System ◽  
Rice Wine ◽  
Controlling System ◽  
Result Show ◽  
Digital Temperature Sensor

Fermentation temperature is the key to decide the quality of the rice wine, so thetemperature controlling system in fermentation room is established base on stm32 microcontrollerand digital temperature sensor. The whole block diagram for the system is firstly detailed, and thenthe Temperature collecting module and temperature control module are also described. At last thesoftware flow chart is discussed. The experiment is done based on designed system, and the data isanalyzed. The result show that designed system can realize high accuracy temperature controlling.

scholarly journals A Digital Improvement—Trimming a Digital Temperature Sensor with EEPROM Reprogrammable Fuses

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1700
Author(s):  
Anca Mihaela Vasile (Dragan) ◽  
Alina Negut ◽  
Adrian Tache ◽  
Gheorghe Brezeanu
Keyword(s):  
Standard Deviation ◽  
Power Supply ◽  
Temperature Sensor ◽  
Experimental Results ◽  
Temperature Error ◽  
Thermal Sensor ◽  
Memory Cells ◽  
Temperature Range ◽  
Read Only Memory ◽  
Digital Temperature Sensor

An EEPROM (electrically erasable programmable read-only memory) reprogrammable fuse for trimming a digital temperature sensor is designed in a 0.18-µm CMOS EEPROM. The fuse uses EEPROM memory cells, which allow multiple programming cycles by modifying the stored data on the digital trim codes applied to the thermal sensor. By reprogramming the fuse, the temperature sensor can be adjusted with an increased trim variation in order to achieve higher accuracy. Experimental results for the trimmed digital sensor showed a +1.5/−1.0 ℃ inaccuracy in the temperature range of −20 to 125 ℃ for 25 trimmed DTS samples at 1.8 V by one-point calibration. Furthermore, an average mean of 0.40 ℃ and a standard deviation of 0.70 ℃ temperature error were obtained in the same temperature range for power supply voltages from 1.7 to 1.9 V. Thus, the digital sensor exhibits similar performances for the entire power supply range of 1.7 to 3.6 V.

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