System for remote sensing of a physical parameter

Details System for remote sensing of a physical parameter System for remote sensing of a physical parameter

1988-01-13

1990-04-10

Lall, Parshotam S.

Boots, shoes, and leggings

364550, 34087017, 374100, 374166, G08C 1912, G01B 726

Patent

active

049166433

ABSTRACT:
A temperature remote-measurement system features a central evaluation unit 10 for all measuring points connected to two conductors 12, 14, forming a main data bus. In the embodiment shown, three addressable bus switches 18-1, 18-2, and 18-3 are connected to the data bus. To each bus switch 18 are connected respective conductors 26, 28. These together form an auxiliary bus, which is either connected to, or disconnected from, the main data bus formed by conductors 12, 14, depending upon the position of breaker 20. To the auxiliary buses formed by conductors 26, 28 are connected sensing units 32-38, which can modulate (as measurement pulses) the current carried by the conductors 26, 28 and which respond to specific voltage pulses (control pulses) generated by the control unit 10 and carried over these conductors. Each of the sensing units 32-28 has a temperature sensor 39, a pulse generator 40 controlled by the frequency of the sensor output signal, and a switching stage 41 activated by the sensor signal, so that the sensing unit altogether generates a sequence of pulses, whose interval represents the temperature at the sensing unit. The system also includes a modulator 58 which uses at least one of pulse width modulation and pulse amplitude modulation.

REFERENCES:
patent: 4440509 (1984-04-01), Agarwal
patent: 4441107 (1984-04-01), Charborski et al.
patent: 4471354 (1984-09-01), Smith
patent: 4481596 (1984-11-01), Townzen
patent: 4483631 (1984-11-01), Kydd
patent: 4531193 (1985-07-01), Yasuhara et al.
patent: 4575806 (1986-03-01), Aldrich et al.
patent: 4669049 (1987-05-01), Kosednar et al.
patent: 4726226 (1988-02-01), Tellerman
Heraeus brochure PTM-Q1,2C 11.86/VN Ko, The Completely Digital Temp. Meas. System, pp. 4-8.
Heraeus brochure PTM-NQ1, PTM-N-NQ1.9.87, Quat.RTM. Laborset.

Affiliated with

Also associated with

Rating

System for remote sensing of a physical parameter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for remote sensing of a physical parameter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for remote sensing of a physical parameter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2304157