Title :
A talking measuring cup for the visually impaired
Author_Institution :
Shoreham-Wading River High School, NY, USA
Abstract :
A measuring cup for the visually impaired has been constructed. It speaks the volume of liquid contained in a special measuring cup in metric or English units. The volume of liquid present in the cup is measured by allowing the liquid to rise between two concentric cylinders which form a capacitor. The height, and hence volume, of the liquid is then proportional to the change in capacitance of the plates. A second set of plates at the bottom of the cup measures the dielectric constant of the liquid, permitting volume to be determined independently of the dielectric constant of the liquid. All measurements and instructions are spoken. It is accurate to 4% of the measurement for volumes from 10 ml to 1 liter
Keywords :
capacitance measurement; handicapped aids; speech synthesis; volume measurement; capacitor; concentric cylinders; dielectric constant; measuring cup; visually impaired; volume of liquid; Battery charge measurement; Capacitance measurement; Capacitors; Coatings; Current measurement; Dielectric constant; Dielectric measurements; Electric variables measurement; Measurement units; Volume measurement;
Conference_Titel :
Computing Applications to Assist Persons with Disabilities, 1992., Proceedings of the Johns Hopkins National Search for
Conference_Location :
Laurel, MD
Print_ISBN :
0-8186-2730-1
DOI :
10.1109/CAAPWD.1992.217419
