| 摘要 |
A passive universally adaptable apparatus for liquid-flow detection. achieving substantially improved accuracy and reliability, intended for compatible use in conjunction with other appropriate monitoring and responding support system: -such as might be employed in use with existing intravenous fluid-infusion equipment for example. Comprising at least one substantially conventional energy-beam emitter device, operating in conjunction with at least one substantially conventional energy-beam detector device, while specially adapted to produce two or more successively sequenced downwardly progressing beam-readings. Three generic variant specimen adaptations are set forth: a.) a single upper emitter reading a given droplet firstly via a single upper beam and detector with a single lower emitter reading the same droplet secondly via a single lower beam and detector: b.) a single upper emitter large enough to activate both upper arid lower detectors of the given falling droplet: c.) a single upper emitter which first active beam is reflected down to provide a second effective beam, the lower detector thereby reading both first and second passed beam levels. Included in the disclosure is a preferred energy-beam emitter amplitude-modulation system serving to aid discrimination of ambient light radiation conditions: likewise, for more reliable performance. The invention sets forth a significant advancement in the art uniquely able to extrapolate readtime data on virtually each falling drop: enabling users to now precisely control critical fluid flow rate. regardless as to varying flow-rate parameters such as viscosity gravity-head, barometrics or temperature.
|
