Communications: electrical – Continuously variable indicating – With particular transmitter
Patent
1989-12-26
1992-05-05
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With particular transmitter
340606, 455343, 73149, 73221, 73428, G01F 324, G01F 1700, H04B 116, G08C 1500
Patent
active
051112019
ABSTRACT:
System for radio transmission of level data of liquid contained in a tank and for converting to the level data to volume data to be indicated. A transmitter includes a cell for supplying electric power, a microcomputer connected to the cell and normally dept in a standby state in which it consumes a small amount of electric power. A timer is connected to the cell and the microcomputer to provide the latter with activation signals to place it in a activated state at a predetermined interval. A level detector if supplied with electric power from the cell only when the microcomputer is activated to provide the level data. A memory is continuously supplied with the electric power from the cell to memorize the level data, and a modulator supplied with the electric power from the cell only when the microcomputer is activated to transmit the level data in the memory by carrier waves through an antenna, whereby the system saves power consumption of the cell.
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Kawabe Masaru
Matsumura Hiroshi
Natori Naoaki
Ohta Yasuto
Shimamura Norio
Tokyo Tatsuno Co., Ltd.
Yusko Donald J.
Zimmerman Brian
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