Electronic scanning pressure measuring system and transducer pac

Details Electronic scanning pressure measuring system and transducer pac Electronic scanning pressure measuring system and transducer pac

1982-04-30

1984-04-17

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Mounting and connection

73147, 73721, 34087013, G01L 906, G01M 900

Patent

active

044427166

ABSTRACT:
This electronic scanning pressure system includes a plurality of pressure transducers (60). A means (22) obtains an electrical signal indicative of a pressure measurement from each of the plurality of pressure transducers (60). A multiplexing means (12) is connected for selectively supplying inputs from the plurality of pressure transducers (60) to the signal obtaining means (22). A data bus (10) connects the plurality of pressure transducers (60) to the multiplexing means (12). A latch circuit (16) is connected to supply control inputs to the multiplexing means (12). An address bus (14) is connected to supply an address signal of a selected one of the plurality of pressure transducers (60) to the latch circuit (16). In operation, each of the pressure transducers (60) is successively scanned by the multiplexing means (12) in response to address signals supplied on the address bus (14) to the latch circuit (16). The electronics of this system is desirably incorporated along with the pressure transducers (60) in a package (50), which contains an array of the pressure transducers (60), a sealed reference chamber (140) and a heater (54). This package may in turn be incorporated in a complete system including an A/D converter (302) and a plurality of the packages (50) connected to the A/D converter (302) by cables (300). The A/D converter is connected to a data processor (304) by a cable (306).

REFERENCES:
patent: 4111058 (1978-09-01), Gross
patent: 4146750 (1979-03-01), Spiesman
patent: 4222277 (1980-09-01), Kurtz et al.
patent: 4373397 (1983-02-01), Keller

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