Respiratory Temperature Monitoring System in ICU

Abstract

Nowadays peoples are suffered from breathing problems. The diseases which include various ailments in the form of sleep apnea, chronic obstructive pulmonary disease and asthma. These diseases are the main cause of hospitalization for elder people. People who have suffered from chronic diseases are needed to repeatedly monitor the vital signs periodically. The vital signs are the basic measurements of body functions. The vital signs of our body are heart rate, temperature, blood pressure, respiratory rate, oxygen saturation and blood glucose level. The respiratory rate monitor is one of the important vital signs which is useful for patients who admitted in Intensive Care Unit (ICU). The respiratory rate is calculated by using LM35 temperature sensor and monitored the patient’s respiration continuously based on voltage value of inhaled and exhaled air. NRF24l01 is used to transmit the sensor data from home to medical center. Then the data are published in a webserver using Ethernet to know the patient’s status which is useful for doctor. And also the data is displayed in a Liquid Crystal Display (LCD). Once the threshold is reached, the alarm is generated and also a message generated in a webpage. Thereby doctor or medical professionals know the patient’s conditions without delay. By using data mining techniques, people may know their condition without medical professionals help.

Existing System

This system presented a gauze mask type respiratory rate monitoring method to sense the respiratory airflow. During breathing, the temperature of respiratory airflow varies in inspiration and expiration phases. This temperature variation could be detected by the pyroelectricity of the piezoelectric film sensor. Monitoring the sensor output variation therefore could monitor the patients’ respiratory rate. Thereby they attained the rapid response time with minimum cost. Limitation of this work is it has some implementation difficulties.

Proposed System

This system proposes a respiratory monitoring system for both inpatients and outpatients. The respiratory rate is calculated based on temperature value. The LM35 temperature sensor is used. For calculating respiratory rate, we need two LM35 temperature sensor. Then sensed the temperature value in real time by using Arduino microcontroller. And then the value is displayed in a web browser using Ethernet wired connection. If any abnormal condition is reached, trigger an alarm and generate an alarm message in web browser. Then the data is analyzed by using data mining techniques to identify the health status of patients without any external help.

Architecture

BLOCK DIAGRAM - Transmitter Section

BLOCK DIAGRAM - Receiver Section