BELT SLIP METER
First Claim
Patent Images
1. A meter for measuring belt slip in a belt drive system having a belt trained about at least two rotating elements, comprising:
- two sensor inputs, to receive input signals related to the rotational speed of said rotating elements;
an external input, to accept a command;
a controller, to calculate from said input signals the relative rotational speed of the two rotating elements, to store a set-point on receiving said command, to compare said relative speed to said set-point, and to generate from said comparison a result indicative of belt slip; and
an output, to transmit said result.
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Abstract
A meter for measuring belt slip in a belt drive system having at least a belt trained about two rotating elements. The meter comprises: two sensor inputs, to receive a digital signal related to the speed of a said rotating element; an external input, to accept a command or value; an output, to display or transmit a measurement or calculation result; and a controller, to calculate the relative speed of the two rotating elements, compare the relative speed to a set-point, and output a result indicative of belt slip.
44 Citations
21 Claims
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1. A meter for measuring belt slip in a belt drive system having a belt trained about at least two rotating elements, comprising:
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two sensor inputs, to receive input signals related to the rotational speed of said rotating elements; an external input, to accept a command; a controller, to calculate from said input signals the relative rotational speed of the two rotating elements, to store a set-point on receiving said command, to compare said relative speed to said set-point, and to generate from said comparison a result indicative of belt slip; and an output, to transmit said result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A meter for measuring belt slip in a belt drive system comprising:
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two sensor inputs, each for receiving a variable-width input signal from a sensor, said variable width indicative of the rotational speed of a rotating element of said drive system; a first external input, to accept an external command to store a set-point; a second external input, to provide a set-point value for storage on said command; an output, to transmit a measurement result; a controller for processing each said input signal received at the two sensor inputs and generating a measurement result including; determining from the width of each said input signal the time for one full revolution of the corresponding rotating element; calculating a ratio of the two times; upon said external command either storing an instance of said ratio as said set-point or, if provided, storing the set-point value as said set-point; calculating a slip indication by comparing another instance of said ratio and said set-point; transmitting to said output said slip indication as a measurement result. - View Dependent Claims (11, 12, 13, 14)
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15. A method comprising:
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placing a first target to rotate with a first drive element in a belt drive system; placing a first sensor to sense said first target and generate a first digital signal corresponding to the rotation of said first drive element; placing a second target to rotate with a second drive element in a belt drive system; placing a second sensor to sense said second target and generate a second digital signal corresponding to the rotation of said second drive element; timing said first and second digital signals to determine the corresponding times for one revolution of said first and second drive elements; calculating a measured drive ratio from said times for one revolution; storing a set-point from the calculating of a measured drive ratio or from an external input of a specified drive ratio; calculating a slip indication from a measured drive ratio and from said stored drive ratio set-point; outputting said slip indication. - View Dependent Claims (16, 17, 18)
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19. A belt slip measurement system comprising:
- two sensors, at least two targets for placement of at least one on each of two rotating belt drive elements to be measured, and a meter;
each of said sensors adapted to detect the presence of said target and generate a digital signal as said target rotates past said sensor such that a sequence of at least one high and one low represents one revolution of said drive element; said meter comprising; two sensor inputs for receiving said signals; an external input, for accepting a command to store a computed result and for receiving a user-selected value; at least one output device, for displaying results and a warning; and a controller for processing said each signal including; calculating the period of a set of consecutive high and low values corresponding to a single rotation of a corresponding drive element and inverting that period and converting the result to rpm units; calculating the ratio of the two rpm results; storing said ratio as a set-point value on receiving said command at the external input; storing a user-selected set-point value upon receipt at the external input; calculating a slip rate result based on said ratio and said set-point value; comparing said slip rate result to a predetermined slip rate level to determine if a warning should be sent; and sending said rpm results, said slip rate result and said warning to said output device. - View Dependent Claims (20, 21)
- two sensors, at least two targets for placement of at least one on each of two rotating belt drive elements to be measured, and a meter;
Specification