Range controller for continuously monitoring the position of the

Details Range controller for continuously monitoring the position of the Range controller for continuously monitoring the position of the

1982-04-05

1985-05-07

Myracle, Jerry W.

Communications: electrical

Condition responsive indicating system

Specific condition

212151, 212153, 212154, 212156, 414701, G08B 2100

Patent

active

045161178

ABSTRACT:
A range controller for continuously monitoring the position of the boom of heavy machinery, is disclosed. The range controller comprises position sensors mounted on the boom and on the machinery for continuously detecting the position of the boom with respect to a reference, control switches located in the cabin of the machinery for permitting the operator to set the position limits of the boom, a central control circuit mounted on the machinery and comprising a micro-processor circuit adapted for connection to the sensors and to the control switches and memory devices for registering the position of the boom as well as the position limits set by the operator and for continuously comparing the actual position of the boom with the position limits, indicators located in the cabin of the machinery and responsive to such micro-processor circuit for warning the operator; a blocking system responsive to the micro-processor for blocking the operation of the boom when a position limit is reached; a main relay, for operating the blocking system, and being electrically energized during normal operation of the machine to release the blocking system so that, in the event of a power cut-off, the main relay is released to operate the blocking system; and additional relays for reversing the operation of the boom when the main relay is released so as to ensure safe stopping of the boom.

REFERENCES:
patent: 3642148 (1972-02-01), Durand
patent: 3819922 (1974-06-01), Horn et al.
patent: 4037742 (1977-07-01), Gustafsson
patent: 4064997 (1977-12-01), Holland et al.
patent: 4205308 (1980-05-01), Haley et al.
patent: 4236864 (1980-12-01), Couture et al.

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