Transducer and interrogator device

Details Transducer and interrogator device Transducer and interrogator device

1994-12-12

1997-12-23

Hofsass, Jeffery

Communications: electrical

Continuously variable indicating

With meter reading

34082572, 34087031, 455 41, G08C 1900

Patent

active

057011214

ABSTRACT:
A transducer and interrogator device is disclosed in which the interrogator provides power and information to the transducer via a magnetic field. The transducer is a passive actuator device that includes an inductive pickup coil that, when subjected to the interrogator's magnetic field, powers the passive actuator and an external electrical device. The magnetic field produced by the interrogator can be modulated in such a manner as to provide identification, commands, or other information to the passive actuator without substantially reducing the power transferred to the passive actuator. Modulation can be by amplitude, phase, frequency, pulse width, or pulse position. An antiphase magnetic field can also be generated to cancel far field radiation. The passive actuator can include a logic circuit to demodulate any received data from the interrogator via the magnetic field, which data can be used to control the operation of the external device. The passive actuator can also include a circuit for transmitting information back to the interrogator using the power extracted from the interrogator's magnetic field. Transmission can be either by a modulated electromagnetic signal generated by an oscillator internal to the passive actuator or by coupled impedance signalling using the passive actuator's pickup coil.

REFERENCES:
patent: 2597264 (1952-05-01), Russell et al.
patent: 3036295 (1962-05-01), Kleist
patent: 3047783 (1962-07-01), Oort et al.
patent: 3169242 (1965-02-01), Davis et al.
patent: 3172102 (1965-03-01), Chapman
patent: 3351938 (1967-11-01), Gray
patent: 3361977 (1968-01-01), Winkle et al.
patent: 3438489 (1969-04-01), Cambornac et al.
patent: 3713102 (1973-01-01), Martin
patent: 3752960 (1973-08-01), Walton
patent: 3766476 (1973-10-01), Silitch
patent: 3816709 (1974-06-01), Walton
patent: 3855592 (1974-12-01), Davis et al.
patent: 3859652 (1975-01-01), Hall et al.
patent: 3898619 (1975-08-01), Carsten et al.
patent: 3964024 (1976-06-01), Hutton et al.
patent: 3982243 (1976-09-01), Gustavsson et al.
patent: 4040053 (1977-08-01), Olsson
patent: 4068232 (1978-01-01), Meyers et al.
patent: 4070672 (1978-01-01), Becker et al.
patent: 4129855 (1978-12-01), Rodrian
patent: 4196418 (1980-04-01), Kip et al.
patent: 4263595 (1981-04-01), Vogel
patent: 4333072 (1982-06-01), Beigel
patent: 4361153 (1982-11-01), Slocum et al.
patent: 4364043 (1982-12-01), Cole et al.
patent: 4388524 (1983-06-01), Walton
patent: 4424438 (1984-01-01), Antelman et al.
patent: 4463353 (1984-07-01), Kuzara
patent: 4517563 (1985-05-01), Diamant
patent: 4546241 (1985-10-01), Walton
patent: 4551712 (1985-11-01), Fockens
patent: 4580041 (1986-04-01), Walton
patent: 4600829 (1986-07-01), Walton
patent: 4602253 (1986-07-01), Kreft
patent: 4654658 (1987-03-01), Walton
patent: 4656472 (1987-04-01), Walton
patent: 4691202 (1987-09-01), Denne et al.
patent: 4694292 (1987-09-01), Masaki
patent: 4724427 (1988-02-01), Carroll
patent: 4742470 (1988-05-01), Juengel
patent: 4779839 (1988-10-01), Sears
patent: 4845347 (1989-07-01), McCrindle et al.
patent: 4879756 (1989-11-01), Stevens et al.
patent: 4912471 (1990-03-01), Tyburski et al.
patent: 4983963 (1991-01-01), Hodgetts et al.
patent: 5019813 (1991-05-01), Kip et al.
patent: 5021778 (1991-06-01), Walton
patent: 5095309 (1992-03-01), Troyk et al.
patent: 5153583 (1992-10-01), Murdoch
patent: 5164719 (1992-11-01), Guena et al.
patent: 5167229 (1992-12-01), Peckham et al.
patent: 5260701 (1993-11-01), Guern et al.
patent: 5351042 (1994-09-01), Aston
patent: 5440300 (1995-08-01), Spillman, Jr.

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