Wearable MEMS Pressure Sensor with Temperature compensation for Diagnosing Neurological Disorders By Analyzing Spine configuration

Abstract

Abstract MEMS Pressure sensors find wide applications in varied areas and it is a boon especially in Biomedical application. We know that there may be various changes in spine shape of an individual which depends upon the age group, the sleepware, the physical activity, acute injury, spine degeneration and postures in his day to day life. Any deviation in the spine shape from its natural erect position causes tension in the lower back muscles which leads to muscle fatigue and strain in a very short time. This abnormal spinal configuration may give rise to several neurological disorders. Diagnosis of the disorder is a must to arrest the problem from further degradation and proper medical intervention at the earliest. This paper proposes a High performance wearable piezoresistive pressure sensor which can measure the slightest deviation of the spine by measuring the strain developed in the lower back muscle. As piezoresistors are highly sensitive to temperature fluctuations a scheme is proposed for temperature compensation of this sensor. Any pressure above 20mm Hg may be responsible for several neurodegenerative diseases hence requires early diagnosis which can both alert and prevent one from several neurological disorders. The pressure sensing for minimum misalignment should be as low as 15mm of Hg or 1.59kPa to 30mm Hg or 10.6kPa which can cause ischemia or ulcer. The proposed sensor has range from 1kPa to 100kPa for early diagnosis of neurological disorders caused by spinal misalignment. The sensitivity is around 3.5mV/V/kPa.