DEVICE FOR MEASURING LENGTH OF LOGGING CABLE Russian patent published in 2005 - IPC

FIELD: mining industry.

SUBSTANCE: device has two generators of magnetic marks, two amplifiers, two relays, two magnetic converters, two comparators, controller, indication block, digital interface block. First and second magnetic converters through appropriate comparator are connected to controller inputs. Inputs of first and second generators of magnetic marks are connected serially to first and second relay, first and second amplifiers respectively and outputs of controller. Indication block and digital interface block are connected through signal buses to controller outputs. Magnetic converters and generators of magnetic marks constructively are positioned in following order along logging cable: first generator, first magnetic convert, second converter, second generator. Distances between magnetic converters and appropriate generators set length, appropriate for reading of one magnetic mark on logging cable.

EFFECT: higher precision, higher reliability.

1 dwg