Boots – shoes – and leggings
Patent
1989-07-21
1992-10-06
Shaw, Dale M.
Boots, shoes, and leggings
73152, G06F 1520, G01V 900
Patent
active
051538326
ABSTRACT:
A self-contained memory gauge includes either semiconductor or magnetic core memory for retaining downhole information related to sampled parameters, such as borehole temperature and pressure. A microprocessor-based computer manages the power utilization by independently and selectably energizing and de-energizing different sections of the gauge. The magnetic core memory is tested for operability, and the addressing of the magnetic core memory is adjusted in accordance with any inoperable memory locations. Samples of the monitored environmental conditions can be taken at variable rates dependent upon software monitoring of the condition, the remaining battery life and the remaining memory capacity and in response to hardware monitored pressure changes. Each sample can be taken to a selectable resolution. A watchdog circuit monitors the microprocessor to insure that it is operating within a preselected time limit. Further, resolution counters (282) and (284), in association with multiplexer (280), provide selectable timing signals.
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Anderson Terry O.
Dant Ronald E.
Donaghe Charles D.
Duncan Richard L.
Forehand Gilbert H.
Duzan James R.
Gilbert III E. Harrison
Halliburton Company
Huntley David
Shaw Dale M.
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