Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1997-11-13
2000-05-02
Tong, Nina
Communications: electrical
Condition responsive indicating system
Specific condition
340618, 340619, 73293, 250577, 250903, 236 20R, G08B 2100
Patent
active
06057772&
ABSTRACT:
An apparatus and method for optical sensing of liquid level in cooking vessels are disclosed. The apparatus comprises: a first sensor (P1) for detecting a liquid and generating a first signal indicating a vessel level of the detected liquid above a desired liquid level (110) in the cooking vessel (102); a second sensor (P2) for detecting the liquid and generating a second signal indicating the vessel level of the detected liquid below the desired liquid level (110) in the cooking vessel (102); a third sensor (P3) for detecting the liquid and generating a third signal indicating the vessel level of the detected liquid (110) at the bottom of the cooking vessel (102); and a controller (108) for receiving the signals and for determining the vessel level in the cooking vessel (102). The method for optically sensing liquid level in a cooking vessel comprises the following steps: first, sensing a vessel level of the liquid at a plurality of locations with a plurality of sensors positioned within the cooking vessel; second, generating at least one analog signal indicating a vessel level of the liquid at at least one of the sensors; third, processing the at least one analog signal; fourth, determining the vessel level of the liquid within the cooking vessel; and fifth, displaying the vessel level within the cooking vessel.
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Henny Penny Corporation
Tong Nina
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