A movement monitor and stimulator may prevent death in human infants from sudden infant death syndrome (SIDS). Recent medical studies indicate a SIDS victim's breathing may be resuscitated by immediate stimulation. The sound and/or movement monitor and stimulator may have a base member configured as a fluid-filled sensing pad for supporting an infant and a transducer for detecting movement or acoustic activity (e.g., heart beat, breathing, voice and motion sounds). A stimulator may move the base member to stimulate movement in the object when output from the transducer corresponds to no sound and/or movement from the object, or indicates a dangerous change in monitored condition, such as the decrease in metabolic rate indicative of the onset of sleep. The stimulator may also be applied in a more gentle fashion to soothe and quiet an infant that has been awakened unexpectedly. The transducer may be a pressure transducer in fluid communication with the fluid interior of the sensing pad. Alternatively, a piezoelectric sheet operatively connected to a surface of the sensing pad may detect movement and movement cessation. An alarm may provide an audible and/or visual indication to third parties when there is no movement from the object. A transmitter may continuously transmit the sensor's output to a remote location for monitoring. A remote monitor may transmit heart and breathing sounds and may also have lights indicating motion and acoustic activity to indicate the infant is breathing.
This is a continuation of patent application Ser. No. 08/292,441, filed Aug. 17, 1994, now abandoned, and a continuation-in-part of patent application Ser. No. 08/231,081 filed Apr. 22, 1994, and issued May 14, 1996, as U.S. Pat. No. 5,515,815.
A postural awareness apparatus includes a pad, signal means for producing a signal, detection means for determining a weight applied to the pad and activating the signal means when the weight exceeds a predetermined weight, means for producing an output when the detection means determines the weight, and means for recording the output.
Conventionally, when a biological information collecting device is used for measurement, an electrode is directly attached to a human body, accurate information cannot be collected and measurement through a lead wire is performed, for long time constraining the human body because of the lead wire. A device proposed to solve the problem comprises a capacitive sensor used for detecting a signal from the human body, and therefore the temperature characteristics are not good, bringing out a drawback that the signal varies in a low-frequency range. A biological information collecting device according to the invention comprises a closed pneumatic sound sensor having a gas-tight air bag made of soft rubber, plastic, or cloth or a cabinet made of metal, rubber, plastic, or wood. Biological information about the respiration, the cardiac rate (cardiac cycle), and the body movement due to, e.g. a cough or a snore is collected by a microphone of a pressure sensor to perform measurement without constraining the human body, thereby solving the problem of the conventional devices.
A remote controlled vibratory and auditory awakening device comprising a plurality of parallelepiped pads, vibratory media within each pad, auditory emission mechanism communicating with each pad, a remote control in RF communication with every pad, whereby the variety of commands provided by the invention include choice of pad, choice of vibration or auditory emission or both, choice of intensity of vibration, volume of sound from auditory emission mechanisms, and audio input from the microphone of the remote control. The remote control also provides for duration of auditory and vibratory emissions.
The ability to operate remote control transmitter functions from external sensors, in conjunction with internal or external controls, to provide condition dependant automatic control of devices such as digital video recorders and the like are presented. The system enables any remote control transmitter to be modified to perform this function without the need to redesign any existing control functions either in the transmitter or receiver and is compatible with all remote control transmitters and receiver functions. The system is applicable to any form of control, is not dependant on existing designs, and easily implemented in any remote control transmitter. The system is a cost-effective solution to any problem, or requirement, associated with external control of remote control functions.
Disclosed is a sleep stage determination apparatus which comprises respiratory-signal detection means for detecting a variation of a respiratory signal from the body of a human subject, and sleep-stage determination means for determining a plurality of sleep stages using only the respiratory-signal variation. The sleep stage determination apparatus of the present invention can eliminate the need for detecting a plurality of biological signals and have simplified sensor and circuit configurations designed to detect only the respiratory signal variation which is relatively easily detectable. This makes it possible to reduce a detection error and achieve enhanced determination accuracy or creditability.
