Abstract: A respiration monitor is disclosed which includes a simplified pneumatic breath detector, a pressure sensor connected with the detector, and an active low pass filter for filtering the output of the monitor to reduce signals not indicative of respiration, such as movement of and/or impacts upon the detector. The monitor may be linked with a transmitter for remote subject monitoring, and the entire monitor may be configured to be unobtrusively worn by the subject.

Abstract: Apparatus and method are disclosed for monitoring selected physiological parameters of a subject, such as respiration and/or ECG information, and alerting a care giver at a remote location when an irregularity is recognized. The apparatus includes a sensor or sensors, a dual frequency, asynchronous transmitter unit for transmitting plural signals indicative of the sensed information, a local receiver/transmitter unit, and a remote receiver. The physiological parameters being monitored are sensed and processed to provide signals which are provided to a pair of transmitters. Transmission is selectively enabled at each transmitter, the first transmitting at a first frequency a signal indicative of real time monitored events and the second, under normal circumstances, transmitting, periodically, at a second frequency a signal indicative of monitored event count and updated subject status.

Abstract: Personal security monitoring apparatus system and method are disclosed, the apparatus including a breath detector and signal processor worn by the user. The signal processor distinguishes between the user's normal breathing patterns and a preselected other breathing pattern intentionally executed by the user when in distress, an alarm output being generated when the other breathing pattern is recognized, The alarm output is transmitted to a local receiver for retransmission over local telephone service to a remote monitoring station. The other breathing pattern may be selected by the user from a plurality of possible other patterns.