Combined digital and analog timepiece and radiation monitor asse

Details Combined digital and analog timepiece and radiation monitor asse Combined digital and analog timepiece and radiation monitor asse

1986-11-21

1988-03-22

Roskoski, Bernard

Horology: time measuring systems or devices

Combined with disparate device

G04B 4700

Patent

active

047333839

ABSTRACT:
A portable electronic timepiece and radiation monitor assembly formed by a timekeeping section so linked to a radiation monitoring section that the user is provided not only with a time display but also with a reading of the existing level of penetrating radiation to which he is exposed. The timekeeping section includes a stable, high-frequency time base from which is derived low-frequency timing pulses that serve to actuate an analog or digital time display. The radiation monitoring section includes electronic means such as a microprocessor coupled to a radiation detector yielding signal currents or pulses at a rate depending on the existing intensity of radiation. These electronic means are responsive to clock pulses from the timekeeping section to determine the number of radiation pulses yielded within a fixed time interval to provide a radiation intensity value whose magnitude is indicated on a radiation intensity display. In one preferred embodiment of the assembly realized in a wrist watch format, these radiation intensity values are stored in a special memory of the microprocessor and accumulated therein to provide on a radiation digital time display a reading in terms of RAD's or other radiation measurement units giving the cumulative dosage to which the wearer has been subjected.

REFERENCES:
patent: 4461952 (1984-07-01), Allemand et al.
patent: 4605858 (1986-08-01), Terhune
patent: 4608655 (1986-08-01), Wolf et al.

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