Design of Simple Bleeding Detector and Alarm System Using RF Transceiver and GSM System

Bleeding is blood escaping from the circulatory system. The complete loss of blood causes death. Stopping bleeding is an important part of both first aid and surgery. This paper presents an automated bleeding detector and alarm system using an advanced RF transceiver and GSM system to sound an alarm on the detection of moisture in the medical gauze. The bleeding sensor detector consists of an elongated pair of fine conductors positioned between the layers of a medical gauze in a region liable to witness bleeding. The end of the sensor protrudes from the upper front portion of the medical gauze and terminates at pressing studs. A bleeding detector unit and RF transmitter are adapted to be easily coupled to the protruding end of the elongated sensor and configured to monitor the electrical resistance between the spaced conductors of the detector. When the medical gauze is wet with blood, the resistance between the spaced conductors falls below a pre established value. Consequently, RF transmitter sends a wireless signal to the RF receiver and GSM system to produce the alarm informing intended persons of the bleeding.