Device for monitoring the presence of a person using a reflectiv

Details Device for monitoring the presence of a person using a reflectiv Device for monitoring the presence of a person using a reflectiv

1994-11-22

1995-11-28

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340556, G08B 13183, G08B 2300

Patent

active

054711983

ABSTRACT:
An electromagnetic (EM) radiant energy beam source transmits a beam of reflectable EM energy toward the space in a hospital bed normally occupied by a patient being monitored. In one embodiment, the beam is reflected by the patient if found within the confines of the hospital bed, and the reflected beam is detected by an EM energy sensor located on the apparatus. A control logic circuit then receives data from the energy sensor regarding the level of reflected energy detected. If a certain beam intensity level has been detected, the control logic circuit sends a signal to an output relay that the patient is still in the bed. If the patient is no longer in the bed, an alternate signal is sent to the output relay. The output relay serves as an interface to an external occupancy monitoring system or may alternatively operate an alarm bell or light to indicate the absence of the patient.

REFERENCES:
patent: 4179692 (1979-12-01), Vance
patent: 4196425 (1980-04-01), Williams, Jr. et al.
patent: 4295133 (1981-10-01), Vance
patent: 4484043 (1984-11-01), Musick et al.
patent: 4565910 (1986-01-01), Musick et al.
patent: 4583084 (1986-04-01), Henderson et al.
patent: 4633237 (1986-12-01), Tucknott et al.
patent: 4947152 (1990-08-01), Hodges

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