US 12,439,486 B2
Accurate microwave heating method and device based on time reversal calibration technology
Kama Huang, Sichuan (CN); and Yi Zhang, Sichuan (CN)
Assigned to Sichuan University, Sichuan (CN)
Filed by Sichuan University, Sichuan (CN)
Filed on Nov. 19, 2021, as Appl. No. 17/531,339.
Claims priority of application No. 202110727078.3 (CN), filed on Jun. 29, 2021.
Prior Publication US 2022/0078891 A1, Mar. 10, 2022
Int. Cl. H05B 6/64 (2006.01); H05B 6/68 (2006.01); H05B 6/72 (2006.01)
CPC H05B 6/645 (2013.01) [H05B 6/68 (2013.01); H05B 6/72 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An accurate microwave heating method, which is applied in a heating device having a signal generator and multiple microwave transceivers, comprising steps of:
(S11) placing a material to be heated into the heating device, wherein the signal generator is arranged at a placement position of the material to be heated;
(S12) according to the placement position of the material to be heated in the heating device, controlling the signal generator to emit a beacon microwave signal;
(S13) receiving the beacon microwave signal by the microwave transceivers, and controlling the microwave transceivers to emit microwave power signals according to the received beacon microwave signal, wherein the microwave power signals are focused on the placement position for heating the material to be heated in the heating device;
(S14) during heating the material, detecting whether a preset trigger condition is satisfied; wherein the preset trigger condition is determined to be satisfied when:
a heating time of the microwave power signals on the material to be heated reaches 10 s; or
a temperature rise of the material to be heated is detected to reach 5° C.; and
(S15) when the preset trigger condition is detected to be triggered and a current temperature of the material to be heated does not meet a preset temperature, returning back to the step (S12), and repeating the steps (S12)-(S14) until the current temperature of the material to be heated meets the preset temperature; and then stopping the signal generator and the microwave transceivers.