Volume No. 7 Issue No.: 3 Page No.: 1254-1261 Jan. - Mar.2013




Supraja S.*, Gowtham R. 1 and Kausalya R. 2

1. School of Electrical Engineering, MIT campus, Anna University, Chennai (INDIA)
2. School of Management Studies, Bharath University, Chennai (INDIA)


Received on : August 10, 2012




Supply chain efficiency in drugs is a matter of life and death. The drug manufactured in a pharmaceutical industry travels a long way in order to save the life of a patient. These life saving drugs are expected to be stored at the specified temperature conditions, right from the time of manufacturing until it is administered to the patient. Few temperature sensitive drugs lose their potency while few others have a shorter shelf life than the prescribed expiry date resulting in severe side effects if not stored at the specified temperature. Various bottlenecks encountered during the transportation result in the variation of the storage temperature and the doctor administering the drug to the patient is completely unaware if the drug had been stored at the specified conditions throughout. This scenario demands the need for an effective continuous temperature monitoring system for life saving drugs. The paper proposes the design of a novel CMOS based temperature monitoring system built around a low power CMOS temperature sensor with an on-chip memory and USB interface. Whenever the storage temperature goes beyond the prescribed range, the signal conditioning circuitry is triggered to record the temperature and the duration for which the temperature fluctuates. This sensor circuitry is proposed to be incorporated by the manufacturer in each package containing the lifesaving drugs. The doctor administering the drug can view the logged data and decide if it could be administered to the patient. The proposed system can reliably ensure that only those drugs that have been stored in the specified environmental conditions are administered to the patient.


Keywords : CMOS, Lifesaving drugs, Memory, Sensor, Storage conditions, Temperature, USB