Abstract: A pressure sensitive pad, generally planar in shape for placement underneath a mattress or cushion, capable of outputting a spectrum of signals depending on the pressure applied on the pad, comprising a plurality of sensitive zones, each zone being connected to a respective controller, configured to measure the pressure on each zone. The pressure sensitive pad comprising two electrically conductive layers; a variable conductive foam layer between the two conductive layers; and a non-conductive layer comprising a plurality of holes, disposed between a first of the two electrically conductive layers and the conductive foam layer. A system operable with the pad calibrates to detect absence and presence of a person for a range of mattress types and mattress weights and person weights; and determines a relative weight and position of the person while the person is on the mattress.

Abstract: A pressure sensitive pad, generally planar in shape for placement underneath a mattress or cushion, capable of outputting a spectrum of signals depending on the pressure applied on the pad, comprising a plurality of sensitive zones, each zone being connected to a respective controller, configured to measure the pressure on each zone. The pressure sensitive pad comprising two electrically conductive layers; a variable conductive foam layer between the two conductive layers; and a non-conductive layer comprising a plurality of holes, disposed between a first of the two electrically conductive layers and the conductive foam layer. A system operable with the pad calibrates to detect absence and presence of a person for a range of mattress types and mattress weights and person weights; and determines a relative weight and position of the person while the person is on the mattress.

Abstract: A pressure sensitive pad, generally planar in shape for placement underneath a mattress or cushion, capable of outputting a spectrum of signals depending on the pressure applied on the pad, comprising a plurality of sensitive zones, each zone being connected to a respective controller, configured to measure the pressure on each zone. The pressure sensitive pad comprising two electrically conductive layers; a variable conductive foam layer between the two conductive layers; and a non-conductive layer comprising a plurality of holes, disposed between a first of the two electrically conductive layers and the conductive foam layer. A system operable with the pad calibrates to detect absence and presence of a person for a range of mattress types and mattress weights and person weights; and determines a relative weight and position of the person while the person is on the mattress.

Abstract: An apparatus is provided for monitoring a person. The apparatus is configured for identifying one or more undesirable conditions, by analyzing data from a sensor unit associated with the person's bed, the data being indicative of the person's presence in or absence from the bed. Upon identification of at least one undesirable condition, the apparatus emits a local alarm and transmits an alert signal to a remote apparatus, which is configured for notifying one or more responders about the undesirable condition. If one or more responders responds to the notification, or if the apparatus is reset locally, the local alarm is stopped.

Abstract: An apparatus is provided for monitoring a person. The apparatus is configured for identifying one or more undesirable conditions, by analyzing data from a sensor unit associated with the person's bed, the data being indicative of the person's presence in or absence from the bed. Upon identification of at least one undesirable condition, the apparatus emits a local alarm and transmits an alert signal to a remote apparatus, which is configured for notifying one or more responders about the undesirable condition. If one or more responders responds to the notification, or if the apparatus is reset locally, the local alarm is stopped.

Abstract: An apparatus is provided for monitoring a person. The apparatus is configured for identifying one or more undesirable conditions, by analyzing data from a sensor unit associated with the person's bed, the data being indicative of the person's presence in or absence from the bed. Upon identification of at least one undesirable condition, the apparatus emits a local alarm and transmits an alert signal to a remote apparatus, which is configured for notifying one or more responders about the undesirable condition. If one or more responders responds to the notification, or if the apparatus is reset locally, the local alarm is stopped.

Abstract: A life safety system for monitoring a building has a plurality of detectors for detecting alarm conditions located throughout the building, a plurality of speakers located throughout the building, a source of pre-stored voice messages which can be broadcast over the speakers, and a telephone network. The improvement is a voice synthesizer for providing the source of pre-stored voice messages and a constant volume telephone system. The constant volume telephone system has a telephone line and a plurality of telephones which can be connected to the telephone line, and a power supply having an adjustable output voltage which provides the voltage for the telephone line. A sensing and adjusting circuit senses the number of telephones off-hook and causes the power supply to be adjusted in response to the number of telephones off-hook.