Transducer for process control

Details Transducer for process control Transducer for process control

1986-09-05

1989-11-21

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341110, 324115, H03M 118

Patent

active

048825840

ABSTRACT:
In this transducer, for converting an analog input signal into an analog output signal whose level corresponds to the level of the analog input signal, there are included: an A/D converter for converting the analog input signal into a digital signal; an input device comprising a plurality of switches; an upper limit setting means for setting an upper limit value for the analog input signal, according to operation of the switches; a lower limit setting means for setting a lower limit value for the analog input signal, according to operation of the switches; a storage device, for storing a current value of the digital signal output by the A/D converter; a comparison means for comparing the current value of the digital signal output by the A/D converter as converted from the analog input signal, and the upper limit value and the lower limit value, all of which are stored in the storage device; an output means for producing an output when the comparison executed by the comparison means indicates that the current value of the digital signal output by the A/D converter as converted from the analog input signal has exceeded the upper limit value, or has dropped below the lower limit value; and a D/A converter for converting the digital signal output by the A/D converter as converted from the analog input signal into an analog output signal whose level corresponds to the level of the analog input signal. Variations on this theme are also disclosed.

REFERENCES:
patent: 2922990 (1960-01-01), Anderson
patent: 3495074 (1970-02-01), Jacques
patent: 3987435 (1976-10-01), Ikeda
patent: 4264898 (1981-04-01), Barman et al.
patent: 4567466 (1986-01-01), Bozarth et al.
Keller, Automotive Electronics Shift into Overdrive, Electronics, Jan. 26, 1984, pp. 101-112.
Cope et al., Engine-Temperature Monitor Warns Pilot of Danger, Electronics, Jun. 24, 1976, pp. 114 & 115.
The Engineering Staff of Analog Devices, Inc., Analog-Digital Conversion Handbook, 6/1972, pp. I-54 to I-57.

Affiliated with

Also associated with

Rating

Transducer for process control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Transducer for process control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transducer for process control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1428717