AbstractUsually it is difficult tomonitor the daily harmonic changes of a pregnant women and especially in ruralareas. Monitoring procedures are the basis to evaluate the clinical state ofpatients and to assess changes in their conditions, thus providing necessaryinterventions in time. Both these two objectives can be achieved by integratingtechnological development with methodological tools, thus allowing accurateclassification and extraction of useful diagnostic information. Therefore, Inthis paper we are proposing an belt which will take analog inputs and makeconsequent predictions about fetal health accordingly. The paper is focused onmonitoring procedures applied to fetal heart rate variability (FHRV) signals,collected during pregnancy, in order to assess fetal well-being.
Introduction As we all know that women duringpregnancy needs lots of precautions and care, they need to maintain theirhealth and need to be caution during this time for the proper development ofthe fetus. Hence it is our duty to resolve the health issue of pregnant women.Studies have shown that pregnant women are much safer if protected by safetybelts in any accident. The AMAC on medical aspects of automotive safety hasstated that “both pregnant women and fetus are safer, provided the belt is wornas low on pelvis as possible.” Globally, about 800 women dieevery day of preventable causes related to pregnancy and childbirth; 20 percent of these women are from India.
Annually, it is estimated that 44,000 womendie due to accidents, mother body posture and not proper body temperature checkup in India. So we decided to develop a belt which will be helpful to womenduring pregnancy. This belt will helpwomen to check their body posture, it will indicate women when they will be notin proper posture. This will help both pregnant women and fetus. In this beltwomen will also be able to check their body temperature easily and bodytemperature will be shown on the display.
Also if women met with any accidentthen she can easily contact her family and notification will be sent to them . This belt also have uniquefeature that would help women to keep check of the health of the fetus. Byusing unique technique pregnant women can keep check of number of kick, whichcan easily tells the health of the fetus. With this technique still birth ofthe child can also be determined. That will be very useful to women during herpregnancy.
These all features will helpwomen to keep regular check of her and also of the future champ. All the datathat will be displayed or that can be determinedby the belt can also be seen and checked on a mobile application which can beeasily downloaded through playstore.Technology used· Flex sensor:-A flex sensor or bendsensor is a sensor that measures the amount of deflection or bending. The sensorgives variable resistance when it is bended along in particular direction. Usually, the sensor is stuck to the surface,and resistance of sensor element is varied by bending the surface. Since theresistance is directly proportional to the amount of bend it is used as goniometer, and often called flexible potentiometer. Here, it is applied alongthe spine to check if the mother is bending or not.
· LM35 temperature sensor-The advantage ofthis sensor has more memory, processing and communication capabilities thanother sensors. The LM35 series are precision integrated – circuit temperaturesensors, whose output voltage is linearly proportional to the Celsius(Centigrade) temperature. The LM35 thus has an advantage over lineartemperature sensors calibrated in 0 Kelvin, as the user is not required tosubtract a large constant voltage from its output to obtain convenientCentigrade scaling. The LM35 does not require any external calibration ortrimming to provide typical accuracies of +- ¼ C at room temperature and +- ¾C over a full -55 to +150C temperature range. The LM35’s low output impedance,linear output, and precise inherent calibration make interfacing to readout orcontrol circuitry especially easy. It can be used with single power supplies,or with plus and minus supplies.
As it draws only 60µA from its supply, it hasvery low self- heating, less than 0.1 C in still air. The LM35 is rated tooperate over a -55 to +150 temperature range. · SIM 900A GSM GPRS Module-This is anultra compact and reliable wireless module. The SIM900A is a complete Dual-bandGSM/GPRS solution in a SMT module which can be embedded in the customerapplications.
Featuring an industry-standard interface, the SIM900A deliversGSM/GPRS 900/1800MHz performance for voice, SMS, Data, and Fax in a small formfactor and with low power consumption. With a tiny configuration of24mmx24mmx3mm, SIM900A can fit in almost all the space requirements in userapplications, especially for slim and compact demand of design. · Arduino UNO-TheArduino Uno is the most common version of Arduino family. The Arduino Uno is amicro controller board based on the ATmega328.It has 14 digital input/outputpins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramicresonator, a USB connection, a power jack, an ICSP header, and a resetbutton.
The Arduino Uno is great choice for beginners.It contains everythingneeded to support the micro controller; simply connect it to a computer with aUSB cable or power it with a AC-to-DC adapter or battery to get started.TheArduino Uno is a good choice for beginners since it is easy to start with. · Velostat Material-Velostatis a piezoresistive material, meaning it’s electrical resistance decreases whenpressure is applyed. When sandwiched between two conductive layers, it has awonderful range for making pressure and bend sensors. positionsensing.
Velostat is a black, opaque, volume-conductive, carbon-impregnatedpolyolefin. The electrical characteristics are not affected by age or humidity(but they do change when melted under the iron). · Battery-· Bluetooth Module HC-05HC?05module is an easy to use Bluetooth SPP (Serial Port Protocol) module,designedfor transparent wireless serial connection setup.The HC-05 Bluetooth Module canbe used in a Master or Slave configuration, making it a great solution forwireless communication.
Thisserial port bluetooth module is fully qualified Bluetooth V2.0+EDR (EnhancedData Rate) 3Mbps Modulation with complete 2.4GHz radio transceiver andbaseband. It uses CSR Bluecore 04?External single chip Rluetooth system withCMOS technology and with AFH (Adaptive Frequency Hopping Feature).
Methodology-Inputsfrom the sensors is given to the ArduinoUNO which after processing further sends the data to the androidapplication with the help of Bluetooth for constant monitoring and givean alert if any abnormality is encountered. Application also sends an SOS withpatients location to the nearby hospitaland family members with the help of SIM900A GSM GPRS Module connected in the circuit.Specificworking of different sensors is explained below.a) LM35-This sensor will give an analog value which will be converted intodigital value by ADC present in Arduino UNO which will be used in calculatingtemperature as per following equation:- Temperature = digital value * 0.48828125 This temperature values then will be sent to application in whichtemperature fluctuations will be monitored and also be proven helpful to detectmild fever during pregnancy which has to be taken care off as it can have catastrophiceffect on fetal health.