US 12,292,433 B2
ERT/ECT dual-modality combined three-dimensional sensor
Peng Zhang, Qingdao (CN); Wentao Wang, Qingdao (CN); Jiuwen Bao, Qingdao (CN); and Shanbin Xue, Qingdao (CN)
Assigned to Qingdao University of Technology, Qingdao (CN)
Appl. No. 18/030,285
Filed by Qingdao University of Technology, Qingdao (CN)
PCT Filed Jun. 16, 2022, PCT No. PCT/CN2022/099046
§ 371(c)(1), (2) Date Apr. 5, 2023,
PCT Pub. No. WO2023/093001, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 202111433254.9 (CN), filed on Nov. 29, 2021.
Prior Publication US 2024/0369529 A1, Nov. 7, 2024
Int. Cl. G01N 33/38 (2006.01); G01N 27/04 (2006.01); G01N 27/22 (2006.01); G01R 27/02 (2006.01)
CPC G01N 33/383 (2013.01) [G01N 27/041 (2013.01); G01N 27/048 (2013.01); G01N 27/223 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrical resistance tomography (ERT)/electrical capacitance tomography (ECT) dual-modality combined three-dimensional sensor configured to be sheathed outside a concrete specimen; wherein the ERT/ECT dual-modality combined three dimensional sensor comprises a main structure comprising a cover box, a shielding box, ERT electrodes, ECT electrodes, and electrode leads; the shielding box is sheathed outside the cover box, a plurality of small round holes are formed in a top surface and side surfaces of the cover box, the ERT electrodes are arranged in the small round holes, and the ECT electrodes are arranged on outer sides of the ERT electrodes; and the ERT electrodes are connected to an ERT data acquisition box via the electrode leads, and the ECT electrodes are connected to an ECT data acquisition box via the electrode leads,
wherein a plurality of partition plates are arranged on the side surfaces of the cover box; a same large round hole is formed at a same eccentric position of each of top surfaces of the cover box and the shielding box, and a plurality of through holes are formed in the partition plates an equal interval; a water injection pipe with scale marks is arranged at the large round hole of the shielding box, and the water injection pipe is fixedly arranged at an edge of the large round hole of the shielding box by a fixing seat; the ERT electrodes each are provided with a screw stem which is fastened via a nut; the ECT electrodes are arranged on portions of the cover box excluding the small round holes and are concentric with the ERT electrodes, and gaskets are provided between the nut and the ECT electrodes; connection between the ERT electrodes and the ERT data acquisition box is achieved by welding of the screw stem and the electrode leads, and connection between the ECT electrodes and the ECT data acquisition box is achieved by direct welding of the ECT electrodes and the electrode leads, and the electrode leads all penetrate out from the through holes.