Method for synchronizing particle counters to external events

Details Method for synchronizing particle counters to external events Method for synchronizing particle counters to external events

1992-01-27

1993-08-10

Sikes, William L.

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

377 12, G06M 700

Patent

active

052356256

ABSTRACT:
A method and an apparatus for synchronizing particle counts to process events provide a trigger signal related to the process events in lieu of a time-based trigger signal. In one embodiment, the controller to a particle counter further subdivides a process event into sub-intervals to allow profiling of particle counts during the process event. In one embodiment, the controller of the particle counter receives multiple trigger signals corresponding to multiple trigger signal sources, each trigger signal source being identified by a source tag. Particle counts and time-stamps are maintained for each source of the trigger signals.

REFERENCES:
patent: 4550417 (1985-10-01), Nunogaki et al.
patent: 4782500 (1988-11-01), Lyngsie
patent: 4837705 (1989-06-01), Mussler et al.

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