Microprocessor integrated multifunction hoist system controller

Details Microprocessor integrated multifunction hoist system controller Microprocessor integrated multifunction hoist system controller

2006-11-21

2006-11-21

Tweel, Jr., John (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C701S050000, C212S276000

Reexamination Certificate

active

07138925

ABSTRACT:
The present multi-function cable hoist system controller monitors a variety of drilling rig hoist system functions, including: positioning of the hoist block of the hoist system, speed/momentum of the hoist block, and hoist block loading. The controller can also monitor: cable ton-mile parameters, weight on the drill bit, and drill bit penetration rate. The controller automatically controls operation of the hoist system's drawworks when the system's operation exceeds certain preset and user specified parameters. The controller has a housing containing a microprocessor, supporting circuitry, and input and output systems. An instruction set digitally stored on the microprocessor codes for the functional features of the controller and enables it to process inputs and to generate outputs to accomplish the controller's functions. Device input means and display/alarm means are mounted on the front panel of the housing. A drawworks output communicates drawworks control signals to the hoist system.

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