Current monitoring system and method for metering peristaltic pump
First Claim
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1. A method of controlling a pump so as to deliver a particular amount of liquid product, comprising:
- driving a motor so as to operate the pump and to thereby deliver the liquid product from a source to a receiving location;
monitoring a drive current of the motor so as to track rotation of the pump'"'"'s rotor;
counting units of rotation of the pump'"'"'s rotor; and
stopping the motor when the counted units of rotation reach a specified target count value.
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Abstract
A pump system includes a peristaltic pump having a rotor, a motor and a controller. The motor is configured to drive the peristaltic pump so as to deliver a liquid product from a source to a receiving location. The controller monitors a drive current of the motor so as to track rotation of the pump'"'"'s rotor. The controller counts units of rotation of the pump'"'"'s rotor, and stops the motor when the counted units of rotation reach a specified target count value.
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Citations
20 Claims
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1. A method of controlling a pump so as to deliver a particular amount of liquid product, comprising:
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driving a motor so as to operate the pump and to thereby deliver the liquid product from a source to a receiving location;
monitoring a drive current of the motor so as to track rotation of the pump'"'"'s rotor;
counting units of rotation of the pump'"'"'s rotor; and
stopping the motor when the counted units of rotation reach a specified target count value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pump system, comprising:
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a peristaltic pump having a rotor;
a motor configured to drive the peristaltic pump so as to deliver a liquid product from a source to a receiving location;
a controller coupled to the motor and configured to monitor a drive current of the motor so as to track rotation of the pump'"'"'s rotor;
wherein the controller is further configured to count units of rotation of the pump'"'"'s rotor, and to stop the motor when the counted units of rotation reach a specified target count value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification