Geometrical instruments – Area integrators – Electrical
Patent
1978-09-29
1980-05-06
Swisher, S. Clement
Geometrical instruments
Area integrators
Electrical
G01B 2304
Patent
active
042009820
ABSTRACT:
The specification discloses a control module having circuitry for generating control and timing signals and for receiving digital data. A plurality of sensor modules are connected to the control module and each contains devices for sensing various physical characteristics, such as water level, rainfall or the like. In response to control signals generated by the control module, each of the sensor modules is operable to input digital data representative of the sensed physical characteristics to the control module. A recorder is connected to the control module and includes a removable recording cassette for recording the digital data transmitted from the sensor modules. The recorder also records the identification of the sensor module transmitting data, along with the calender day and the time of day that the data was transmitted.
REFERENCES:
patent: 1498960 (1924-06-01), Gardner
patent: 2577252 (1951-12-01), Sliwinski
patent: 2930131 (1960-03-01), Mays
patent: 3034217 (1962-05-01), Mays et al.
patent: 4022059 (1977-05-01), Schontzler et al.
patent: 4045876 (1977-09-01), Bowen
Chandler Ronald W.
Mueller Frederick N.
Swisher S. Clement
Tetradyne Corporation
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