Measuring and testing – Simulating operating condition – Marine
Patent
1994-03-07
1996-08-13
Chin, Stephen
Measuring and testing
Simulating operating condition
Marine
73198, 359180, G01F 1502
Patent
active
055445233
ABSTRACT:
An air flow sensor unit for an internal combustion engine control system which detects an air flow rate and outputs an optical signal corresponding to the detected air flow rate to an external equipment including a bridge circuit including a temperature sensitive resistor which detects the air flow rate and outputs a first electrical signal indicative of a voltage amplitude corresponding to the detected air flow rate; a first converting circuit which converts the first electrical signal outputted from the bridge circuit into a second electrical signal indicative of a digital value corresponding to the voltage amplitude of the first electrical signal; a second converting circuit including a laser diode, for converting the second electrical signal outputted from the first converting circuit into the optical signal having the same digital value as that of the second electrical signal; a housing for accommodating the bridge circuit, first converting circuit and second converting circuit; and an apparatus of a lens and optical fiber cable secured integrally to the housing for transmitting the optical signal outputted from the second converting circuit to an external equipment.
REFERENCES:
patent: 4584883 (1986-04-01), Miyoshi et al.
patent: 4884215 (1989-11-01), Zboralski et al.
patent: 4916689 (1990-04-01), Bielinski
patent: 5081710 (1992-01-01), de Groof et al.
patent: 5237441 (1993-08-01), Nhu
Naito Shotaro
Suda Seiji
Tsutsui Mitsukuni
Uchiyama Kaoru
Chin Stephen
Hitachi , Ltd.
May Timothy J.
LandOfFree
Physical quantity sensor arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Physical quantity sensor arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Physical quantity sensor arrangement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1040533