Bridge sway and deflection detection system

Details Bridge sway and deflection detection system Bridge sway and deflection detection system

1988-01-21

1989-06-27

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73786, 340533, 340686, 356400, G08B 2100

Patent

active

048433721

ABSTRACT:
Apertured plates are mounted to a bridge structure and cooperate with a mirror system to reflect a laser beam from a laser gun to a laser receiver that is coupled to processing circuitry coupled to a modem that is in turn coupled to a central monitoring station through a telephone line. There are a first pair of aperture plates fixedly secured to one side of a first vertical column and a second vertical column of the bridge and are aligned with each other and a first mirror of the mirror system. A second pair of aperture plates are fixedly secured to another side of the first vertical column and the second vertical column of the bridge and are aligned with each other and a second mirror of the mirror system in order to provide for a forward and reverse passage of the laser beam for detecting the sway and deflection of the bridge.

REFERENCES:
patent: 3744043 (1973-07-01), Walden et al.
patent: 3939460 (1976-02-01), Horn et al.
patent: 4288158 (1981-09-01), Frungel
patent: 4296485 (1981-10-01), Clemens
patent: 4472883 (1984-09-01), Ortega
patent: 4730928 (1988-03-01), Gabriel et al.

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