Remote control system for constructional machinery

Details Remote control system for constructional machinery Remote control system for constructional machinery

1983-12-09

1986-11-04

Orsino, Jr., Joseph A.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

318 16, 455127, 455352, H04B 900

Patent

active

046213759

ABSTRACT:
For the remote control of construction machinery, more specially in the form of the distribution mast or boom of a concrete pump, in the invention a transmission system has a radio remote control unit whose control transmitter and receiver are joined up with the command unit and with the distributor for the solenoid valves respectively by respective plug contact connector means. The transmission mode is one using digitally encoded RF messages so that for each control function two part-messages are continuously transmitted after the connections have been made, such messages each being made up of a bit representative of the function, of address information and of a parity bit for security, and mirroring the condition of the circuits of the command unit. The receiver has a RF receiving part, a central process controller and a relay part or a D/A converter.

REFERENCES:
patent: 2886750 (1959-05-01), Vogel
patent: 3136385 (1964-06-01), Gitel
patent: 3263141 (1966-07-01), Nicola
patent: 3454927 (1969-07-01), Dame et al.
patent: 3463327 (1969-08-01), Lester
patent: 3513443 (1970-05-01), Anderson
patent: 3829782 (1974-08-01), Dillman et al.
patent: 4471492 (1984-09-01), Mann et al.
Alessi--"A Negative Ion Sputter"--Nuclear Instruments and Methods 147 #2, 1977 North-Holland Pub. Co., pp. 305-312.

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