Patent ID: 6635830
Filing Date: 2003-10-21
Classification: G01G,Y10T

Abstract:
A method of extracting a static weight measurement from a moving product on a weigh scale, comprising the steps of:making a continuous weight measurement of the product passing over the weigh scale; when a preselected increase in weight measurement is sensed, commencing to continuously calculate the rate of weight change over time; after a maximum positive rate of weight change over time occurs, immediately after which the rate of weight change over time begins to decrease, commencing to continuously record weight measurements; when the rate of weight change over time reaches a first preselected negative percentage of the maximum positive rate of weight change over time, in reverse chronological order, reviewing previously recorded weight measurements and determining an end sample position defined at a second preselected negative percentage of the maximum positive rate of weight change over time, said second preselected negative percentage less negative than said first preselected negative percentage; determining a start sample position within said recorded weight measurements, such that a range of weight measurements taken between said start and end sample positions are substantially constant in magnitude; and calculating an average weight between said end sample position and said start sample position of the recorded weight measurements as the extracted static weight measurement of the moving product.