Heart Beat Sensors

The concern towards human welfare has created the needs for a rapid, continuous, no invasive sensor arrangement of essential signs. Particularly non-invasive and non-restraining frameworks are required, since they could monitor health status over a long period. Pressure sensor & Heart beat sensors are used to measure the vital signs[2].

1.1 INTRODUCTION

Blood pressure measurement is actually the force of blood against the walls of arteries. Blood pressure is shown as 2 numbers the systolic pressure (as the heart pulsates) over the diastolic pressure (as the heart relaxes between heart beats). The measurement is expressed one above the other, with the systolic value on top and the diastolic value on the bottom. For instance, a BP measurement

This method involves mercury manometer, sleeve cuff, air pump which makes patient to feel uncomfortable. Hence it is needed to make use of new technologies in BP measurement[2]. Doctors are also facing some problems while measuring the BP readings like unable to hear the perfect thumping sound or Korotkoff sound while the process of air pumping is carried out[4]. To avoid this risk of stethoscope hearing, different kinds of sensors are been used for the measurement. Along with the BP sensor, Heartbeat sensor and temperature sensors are also used to measure the pulse rate and body temperature of the patient respectively. Using the sensors in BP measurement reduces the risk for the doctors and time required for the actual BP

This equipment presently is in place at most hospitals and drug stores. To simplify and improve the procedure even more, an “athome” solid-state blood pressure monitor is currently available[3]. This pattern toward smaller, more compact medical equipment has resulted in the requirement of smaller devices to control system.

1.3 AIM OF THE PROJECT

The aim of this proposed system is to design a Blood pressure monitoring system which can classify the BP values and Predict the BP effects based on the previous Blood pressure values using the Bayes’ theorem algorithm and define the classes. Then the BP values are sent to the server through GPRS.

1.4 OBJECTIVES OF THE PROJECT

1. To collect the blood pressure and Pulse rate readings from The BP and heartbeat sensor incorporated in the module.

2. From the temperature sensor, patient’s body temperature readings are collected.

3. Converting the Analog signals from sensors to digital values using ADC.

4. The digital BP, pulse rate and body temperature readings are displayed on LCD