Method and apparatus for magnetic induction heating using radio frequency identification of object to be heated
DCFirst Claim
1. For use with an induction heating device, an induction heatable object including a component which will be heated when subjected to a magnetic field, and an RFID tag operably coupled with said object, said tag having electronic memory, there being digital electronic information stored in said memory pertaining to the induction heating history previously experienced by said object, said tag operable to transmit said information when interrogated by an RFID tag reader, said tag also operable to store updated information received from a tag writer.
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Accused Products
Abstract
A temperature-regulating induction heating system is provided which comprises an induction heater (20) having apparatus (36, 38, 40) for receiving RFID transmissions and an induction heatable object (22) with an RFID tag (50). The heater (20) includes a component (28) for generating a magnetic field, control circuitry including a microprocessor (32) coupled with the component (28) for selectively initiating and terminating generation of a magnetic field; the receiving apparatus (36, 3 8, 40) provides information to the microprocessor (32) causing initiation of a heating algorithm for the object (22). In preferred forms, the tag (50) and apparatus (36, 38, 40) are designed for two-way information transfer, thereby permitting continuous updating of the information carried by tag (50). In this way, if induction heating of the object (20) is interrupted, it maybe resumed to nevertheless achieve a desired regulation temperature. Advantageously, the RFID tag (50) and apparatus (36, 38, 40) operate during intermittent interruption of the primary magnetic field of the heater (20) to eliminate transmission interference. The tag (50) may be equipped with one or more thermal switches (100, 104, 106) to provide better temperature control.
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Citations
56 Claims
- 1. For use with an induction heating device, an induction heatable object including a component which will be heated when subjected to a magnetic field, and an RFID tag operably coupled with said object, said tag having electronic memory, there being digital electronic information stored in said memory pertaining to the induction heating history previously experienced by said object, said tag operable to transmit said information when interrogated by an RFID tag reader, said tag also operable to store updated information received from a tag writer.
- 11. In an induction heating device including a component for generating a magnetic field in order to inductively heat an object, control circuitry operably coupled with said generating component for selective operation thereof to vary the magnitude of said magnetic field, the improvement which comprises apparatus coupled with said circuitry for transmitting information to and receiving digital information from an RFID tag associated with said object, said control circuitry operable to reduce the magnitude of said magnetic field during the times that said apparatus is transmitting or receiving said digital information.
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18. The combination comprising:
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an induction heating device comprising a component for generating a magnetic field in order to inductively heat and object, control circuitry operably coupled with said generating component for selectively altering the magnitude of the generated magnetic field, and apparatus coupled with said circuitry for receiving information from an RFID tag associated with said object; and
an induction heatable object including a component which will be heated when subjected to a magnetic field, and an RFID tag operably coupled with said object, said RFID tag being operable to transmit information, and said apparatus operable to receive said information, the operation of said device during the induction heating of said object being at least in part responsive to said information received from said RFID tag. - View Dependent Claims (19, 20, 21, 22)
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23. The combination comprising:
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an induction heating device comprising a component for generating a magnetic field in order to inductively heat an object, control circuitry operably coupled with said generating component for selective operation thereof to vary the magnitude of said magnetic field, and an RFID tag reader coupled with said circuitry; and
an induction heatable object including a component which will be heated when subjected to said magnetic field, and an RFID tag operably coupled with said object, said control circuitry operable to reduce the magnitude of said magnetic field during the times that said tag is transmitting said information to said reader.
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24. The combination comprising:
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an induction heating device comprising a component for generating a magnetic field in order to inductively heat an object, control circuitry operably coupled with said generating component for selective operation thereof to vary the magnitude of said magnetic field, and an RFID tag reader coupled with said circuitry, said RFID tag reader including a transmitting antenna, there being no ground plane associated with said transmitting antenna; and
an induction heatable object including a component which will be heated when subjected to said magnetic field, and an RFID tag operably coupled with said object.
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25. A method of heating an induction heatable object comprising the steps of:
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providing an induction heatable object having an RFID tag operably coupled thereto;
placing said object adjacent a magnetic induction heater, said heater comprising a component for generating a magnetic field in order to inductively heat said object, control circuitry operably coupled with said generating component for selectively altering the magnitude of the generated magnetic field, and apparatus coupled with said circuitry for receiving information from an RFID tag associated with said object; and
causing said RFID tag to transmit information to said apparatus for receipt thereby, and allowing said apparatus and control circuitry to control the operation of said component in at least partial response to the information transmitted by said RFID tag and received by said apparatus. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. In an induction heating device including a component for generating a magnetic field in order to inductively heat an object, control circuitry operably coupled with said generating component for selective operation thereof to vary the magnitude of said magnetic field, the improvement which comprises apparatus coupled with said circuitry for transmitting information to and receiving digital information from an RFID tag associated with said object, said apparatus comprising a transmitting antenna, said transmitting antenna having no ground plane associated therewith.
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37. The combination comprising:
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an induction heating device comprising a component for generating a magnetic field in order to inductively heat an object, control circuitry operably coupled with said generating component for selective operation thereof to vary the magnitude of said magnetic field, and an RFID tag reader coupled with said circuitry; and
an induction heatable object including a component which will be heated when subjected to said magnetic field, and an RFID tag operably coupled with said object, said tag having electronic memory, there being digital electronic information stored in said memory pertaining to the induction heating history previously experienced by said object, said tag operable to transmit said information when interrogated by said RFID tag reader. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification