Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1989-05-01
1990-09-04
Woodiel, Donald O.
Communications: electrical
Condition responsive indicating system
Specific condition
324260, 340573, G08B 1324
Patent
active
049548123
ABSTRACT:
A magnetic field alarm detector comprised of a plurality of magnetic field detectors mounted in a horizontal plane for detecting respective rotational components of a magnetic field and in response generating respective signals proportional thereto. Each of the detectors is mounted at a predetermined angle with respect to adjacent ones of the detectors, thereby encompassing a 360-degree field of view. Circuitry is included for rectifying and summing the respective signals received from the detectors and in response generating an output signal. Additional circuitry is provided for comparing the output signal to a predetermined set-point signal and in the event the output signal is greater than the set-point signal generating one or both of an audible and visual alarm signal. The alarm indicator of the present invention is particularly useful for measuring high magnetic field strengths for preventing accidental malfunctioning of sensitive medical equipment such as infusion pumps, ventilators, etc., and protecting magnetically sensitive components such as magnetic tapes, credit cards etc.
REFERENCES:
patent: 2551596 (1951-05-01), Haglund
patent: 3604373 (1971-09-01), Crowley et al.
patent: 3961320 (1976-06-01), Erdmann et al.
patent: 4053829 (1977-10-01), Maruo
patent: 4285158 (1981-08-01), Courts et al.
patent: 4296376 (1981-10-01), Bartol, Jr.
patent: 4362992 (1982-12-01), Young et al.
patent: 4527123 (1985-07-01), Gilman et al.
patent: 4611127 (1986-09-01), Ibrahim et al.
London Health Association
Mullen Jr. Thomas J.
Woodiel Donald O.
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