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US 8,471,231 B2Granted
Optical drop detector system featuring a plurality of light pulses for detecting a plurality of flows
AssigneeFlowsense Ltd.
InventorIlan Paz
Life of this patent
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AssigneeFlowsense Ltd.
InventorIlan Paz
Estimating the term…
The invention provides an optical drop detection system (10), for a low-flow metering device of the type having a drop generator 12, 24, (19), the system comprising at least one optical transmitter (26) which produces a plurality of light beam pulses (28) of microsecond duration and at millisecond intervals, and at least one optical receiver (33) positioned to register receipt of the light pulses (28) transmitted through the path of drops (18) generated by the drop generator (12, 24, 19) and to record the number of pulses which hit a given drop and which do not register on the receiver (32), the frequency and strength of the pulses being calibrated so that a single drop is impinged upon by a plurality of pulses, and further comprising automatic feed-back means for adjusting the parameters of interaction between the at least one optical transmitter (26) and the at least one optical receiver (32) to produce and maintain a predetermined minimum and a predetermined maximum number of hits per drop.
An optical drop detection system for a low-flow metering device of the type having a drop generator, said system comprising at least one optical transmitter which produces a light beam, and at least one optical receiver positioned to register receipt of said light beam transmitted through the path of drops generated by said drop generator, and further comprising an automatic feed-back system for adjusting the parameters of interaction between said at least one optical transmitter and said at least one optical receiver to produce and maintain a predetermined amount of light being registered by said at least one optical receiver per drop, wherein said light beam comprises plurality of light beam pulses, wherein said at least one optical transmitter produces said plurality of light beam pulses and said at least one optical receiver records the number of pulses which hit a given drop and which do not register on said receiver.
An optical drop detection system for a low-flow metering device of the type having a drop generator, said system comprising at least one optical transmitter which produces a light beam,at least one optical receiver positioned to register receipt of said light beam transmitted through the path of drops generated by said drop generator, an automatic feed-back system for adjusting the parameters of interaction between said at least one optical transmitter and said at least one optical receiver to produce and maintain a predetermined amount of light being registered by said at least one optical receiver per drop, wherein said automatic feedback system further comprises a comparison system, and a plurality of amplifiers for adjusting the intensity of said light beam, wherein said comparison system signals to said plurality of amplifiers to vary a connection between said at least one optical transmitter and said plurality of amplifiers.
Dependencies are inferred from the claim text.