scholarly journals Design and Development of a Low Cost, Non-Contact Infrared Thermometer with Range Compensation

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3817
Author(s):  
Nicholas Wei-Jie Goh ◽  
Jun-Jie Poh ◽  
Joshua Yi Yeo ◽  
Benjamin Jun-Jie Aw ◽  
Szu Cheng Lai ◽  
...  

Fever is a common symptom of many infections, e.g., in the ongoing COVID-19 pandemic, keeping monitoring devices such as thermometers in constant demand. Recent technological advancements have made infrared (IR) thermometers the choice for contactless screening of multiple individuals. Yet, even so, the measurement accuracy of such thermometers is affected by many factors including the distance from the volunteers’ forehead, impurities (such as sweat), and the location measured on the volunteers’ forehead. To overcome these factors, we describe the assembly of an Arduino-based digital IR thermometer with distance correction using the MLX90614 IR thermometer and HC-SR04 ultrasonic sensors. Coupled with some analysis of these factors, we also found ways to programme compensation methods for the final assembled digital IR thermometer to provide more accurate readings and measurements.

2021 ◽  
Author(s):  
Nicholas Wei-Jie Goh ◽  
Jun-Jie Poh ◽  
Joshua Yi Yeo ◽  
Benjamin Jun-Jie Aw ◽  
Szu Cheng Lai ◽  
...  

Abstract: Fever is a common symptom of many infections e.g. COVID-19 in the ongoing pandemic, keeping monitoring devices like thermometers in constant demand. Recent technological ad-vancements in thermometers have the infrared (IR) thermometers as the thermometer of choice for screening multiple individuals in a contactless manner. Yet, even so, the measurement accuracy of such thermometers is affected by many factors including the distance from the volunteer’s fore-head, impurities (such as sweat) and the location measured on the volunteer’s forehead. To overcome such factors, we describe the assembly of an Arduino-based digital IR thermometer with distance correction using the MLX90614 IR thermometer and HC-SR04 ultrasonic sensors. Coupled with some analysis of these factors, we also found ways to programme compensation methods for the final assembled digital IR thermometer to provide more accurate readings and measure-ments.


Author(s):  
A. F. Kheiralla ◽  
Hussain Yousif ◽  
Hassan Galal Hassan ◽  
Hafiza Abdelmoniem Khiery ◽  
Marwa Ghanim

2020 ◽  
pp. 495-501
Author(s):  
Jaya Prasad ◽  
Reema Anne Roy ◽  
Monish Mohan Kora ◽  
Abin Sam ◽  
Chriso Christudhas ◽  
...  

There are many integrated perimeter security solutions available, the main objective of this paper is to provide cost effective solution. This paper mainly focuses on design of a Low-cost vibration module with RS485 interface, Controller hub with RS485 interface and Ethernet interface and a Command Centre server. The platform consists of RS485 daisy chained vibration sensor network connected to control server via Controller hub. It is designed to pin point the area of intrusion and cueing the camera to that specified location. It can be integrated with smart devices like PTZ/Thermal/IR cameras or radars. Each daisy chain consists of 250 sensors with each sensor 3 metres apart, each ethernet hub can handle 2 daisy chains. The Controller hub gets vibration sensor information via RS485 and transmits data to Command centre using TCP/IP protocol. The Controller centre identifies the location of the sensor and moves the PTZ camera to the specific location and live streams the data to the user.


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