Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1986-06-23
1987-10-13
Rowland, James L.
Communications: electrical
Condition responsive indicating system
Specific condition
340384E, 340667, G08B 2300
Patent
active
047001801
ABSTRACT:
A monitoring system for a bed patient comprising a binary signal generating means to provide a first signal when the patient is in the bed and a second signal when the patient is out of the bed. An alternating electrical power supply passes to a frequency divider so that electrical pulses of selected time spacing are derived by means of which time can be measured. These pulses go to a signal delay means with adjustments possible for any selected delay and then to a latch means. Alarm control means are provided responsive to the operation of the latch for controlling the nature of the alarm signal. The alarm control means alternately provides electrical alarm signals of various sorts, such as a single short pulse or an indefinitely long pulse or an alternating signal. Each of these could separately control a visual or audible alarm means. This invention is compatible with normal call equipment and alarms in hospitals.
REFERENCES:
patent: 4206448 (1980-06-01), Davis
patent: 4242672 (1980-12-01), Gault
patent: 4280123 (1981-07-01), Right et al.
patent: 4295133 (1981-10-01), Vance
patent: 4359726 (1982-11-01), Lewiner et al.
patent: 4438771 (1984-03-01), Friesen et al.
Hofsass Jeffery A.
Rowland James L.
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