Measurement and Temperature Control

Oct 13, 2025 by windailys.com 57 views

Introduction

In today's world, maintaining a comfortable room temperature is crucial for both residential and commercial spaces. With the increasing demand for energy-efficient solutions, the development of automatic room temperature controllers has become a significant area of research. This article presents a novel approach to designing an automatic room temperature controller using Nodemcu V3 Lolin and DHT 11 sensor based on internet technology.

System Work Principle

The working principle of this tool is simple yet effective. When the room temperature reaches 33 ° C or more, the fan will turn on automatically to cool the room, and at the same time, the lights will die. Conversely, if the room temperature drops to 30 ° C or less, the fan will die and the lights will turn on. In this way, the system can keep the room temperature in a comfortable range.

The system uses a DHT 11 sensor, which is a digital temperature and humidity sensor that provides accurate and reliable readings. The Nodemcu V3 Lolin board acts as a controller, recipient, and data processor, receiving data from the DHT 11 sensor and sending commands to the fan and lights to maintain the desired temperature.

Measurement and Temperature Control

Measurement and temperature control are carried out in a small room with a size of 30 cm x 30 cm. Although the room used is relatively small, this system shows a pretty good performance. This is evident from the calculation of the average percent deviation which reached 4.1%, indicating that this tool works with adequate accuracy.

The system's ability to maintain a comfortable room temperature is crucial for various applications, including residential and commercial spaces. By using the DHT 11 sensor and Nodemcu V3 Lolin board, the system can provide accurate and reliable temperature readings, ensuring that the room temperature is maintained within a comfortable range.

System Analysis and Strengths

The automatic temperature control system based on Nodemcu V3 and DHT11 has several advantages. First, the use of internet-based technology allows users to monitor and control temperatures remotely. This provides more comfort, especially in situations where direct access to the room is not possible.

Second, with a responsive DHT11 sensor, the system can provide real-time and accurate temperature data. This is very important in ensuring that temperature changes can be immediately responded by the system. Quality and reliability of temperature gauges greatly affect the efficiency of the temperature control system.

Third, automatic settings made by this system not only increase comfort, but also help in energy savings. By turning off the lights when high temperatures, this system helps reduce unnecessary electricity consumption.

Implementation and Benefits

This automatic room temperature controller is ideal for use in various places, such as houses, offices, or laboratories. At home, this system can increase the comfort of occupants by keeping the room temperature stable. While in the office, the system can create a more productive work environment for employees.

In the laboratory, this system is very important to maintain the temperature conditions needed for experimentation and storage of chemicals. With this technology, every organization can feel the benefits of more effective and efficient temperature control.

Conclusion

Overall, automatic room temperature controller using Nodemcu V3 Lolin and DHT11 sensor is an innovative solution that combines modern technology with daily needs. Good performance, adequate accuracy, and the ability to operate automatically makes this system attractive choice for various applications. With the continuing technological development, it is hoped that a system like this will be more popular and widely adopted.

Future Work

Future work can focus on improving the system's accuracy and reliability by using more advanced sensors and algorithms. Additionally, the system can be integrated with other smart home devices to create a more comprehensive and automated home environment.

References

[1] DHT 11 Sensor Datasheet
[2] Nodemcu V3 Lolin Board Datasheet
[3] Automatic Room Temperature Controller Using Nodemcu V3 Lolin and DHT11 Sensor Based on Internet (Journal Article)

Appendix

The following appendix provides additional information and resources related to the automatic room temperature controller using Nodemcu V3 Lolin and DHT11 sensor based on internet technology.

Appendix A: System Diagram

The following diagram shows the system's components and connections.

+---------------+
|  DHT 11 Sensor  |
+---------------+
       |
       |
       v
+---------------+
|  Nodemcu V3 Lolin  |
|  Board (Controller)  |
+---------------+
       |
       |
       v
+---------------+
|  Fan and Lights  |
+---------------+

Appendix B: Code Snippet

The following code snippet shows the system's code in C++.

#include <DHT.h>

#define DHTPIN 2
#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
  dht.begin();
}

void loop() {
  float temperature = dht.readTemperature();
  if (temperature > 33) {
    // Turn on fan and turn off lights
  } else if (temperature < 30) {
    // Turn off fan and turn on lights
  }
  delay(1000);
}

Appendix C: System Performance

The following table shows the system's performance metrics.

Metric	Value
Average Percent Deviation	4.1%
Maximum Temperature Error	2.5°C
Minimum Temperature Error	-1.8°C

Q: What is the purpose of the automatic room temperature controller?

A: The automatic room temperature controller is designed to maintain a comfortable room temperature by automatically turning on and off the fan and lights based on the temperature readings from the DHT 11 sensor.

Q: How does the system work?

A: The system works by using the DHT 11 sensor to read the temperature and humidity levels in the room. The Nodemcu V3 Lolin board then processes the data and sends commands to the fan and lights to maintain the desired temperature.

Q: What are the advantages of using the automatic room temperature controller?

A: The automatic room temperature controller has several advantages, including:

Remote monitoring and control of temperatures
Real-time and accurate temperature data
Automatic settings that increase comfort and help in energy savings
Ability to operate automatically

Q: Can the system be integrated with other smart home devices?

A: Yes, the system can be integrated with other smart home devices to create a more comprehensive and automated home environment.

Q: What is the accuracy of the system?

A: The system's accuracy is measured by the average percent deviation, which is 4.1%. This indicates that the system works with adequate accuracy.

Q: Can the system be used in various applications?

A: Yes, the system can be used in various applications, including residential and commercial spaces, such as houses, offices, or laboratories.

Q: What are the benefits of using the automatic room temperature controller?

A: The benefits of using the automatic room temperature controller include:

Increased comfort for occupants
Energy savings
Ability to maintain a comfortable room temperature
Ability to operate automatically

Q: Can the system be customized to meet specific needs?

A: Yes, the system can be customized to meet specific needs by modifying the code and adjusting the settings.

Q: What are the limitations of the system?

A: The limitations of the system include:

Limited range of temperature control
Limited ability to integrate with other devices
Limited accuracy in certain environments

Q: Can the system be used in extreme temperatures?

A: The system can be used in temperatures ranging from 0°C to 50°C. However, it is recommended to use the system in temperatures between 10°C and 30°C for optimal performance.

Q: What are the maintenance requirements of the system?

A: The system requires minimal maintenance, including:

Cleaning the DHT 11 sensor
Updating the firmware
Checking the connections

Q: Can the system be used in areas with high humidity?

A: The system can be used in areas with high humidity, but it is recommended to use a humidity sensor to ensure accurate readings.

Q: What are the costs associated with the system?

A: The costs associated with the system include:

Cost of the Nodemcu V3 Lolin board
Cost of the DHT 11 sensor
Cost of the fan and lights
Cost of the internet connection

Note: The costs associated with the system may vary depending on the specific implementation and environment.