Search NASA⌕ Search

Engineering topics

Fryer, T. B.

Publications and source records attributed to Fryer, T. B..

48 records · Page 3

Single-channel pressure telemetry unit.

Single channel pressure telemetry unit for chronic implantation into cardiac chambers or major blood vessels in unrestrained animals for measuring ventricular pressure

Datnow, B.↗

Multichannel implantable telemetry system

Multichannel telemetry system is used for chronic implantation in animals to monitor a variety of physiological parameters. A hermetically sealed unit, the system uses a time-sharing multiplex scheme to commutate between various sensor inputs and enables the number of channels to be increased or decreased.

Fryer, T. B.↗

Miniature telemetry system accurately measures pressure

Miniature, low power, telemetry system that can be used with commercially available strain gage pressure transducers accurately measures pressure with a small implantable pressure cell and transmitter. The system has been used to date only with pressure transducers, but the circuit is equally applicable to any measurement using a strain gage sensor.

Fryer, T. B.↗

Miniature bioelectric device accurately measures and telemeters temperature

Miniature micropower solid-state circuit measures and telemeters the body temperature of laboratory animals over periods up to two years. The circuit employs a thermistor as a temperature sensing element and an fm transmitter. It is constructed from conventional discrete components or integrated circuits.

Fryer, T. B.↗