Title:
DETECTION DEVICE AND DETECTION METHOD
Document Type and Number:
Japanese Patent JP2023137035
Kind Code:
A
Abstract:
To detect the open/closed state of a clamp part in a clamp type current sensor that has higher reliability.SOLUTION: The detection device comprises: a signal supply circuit 10 that supplies a prescribed given detection signal to a current sensor 2; and a determination circuit 11 that compares the value of an electric signal outputted from a magnetic senor 21 that corresponds to a magnetic flux density B in a magnetic core 20 when the detection signal is supplied, with a preliminarily set electric signal determination reference value, and determines the presence of abutting defects at edges ac1, bc2 of divided cores 20a, 20b, 20c. The magnetic flux density in the magnetic core 20 includes a magnetic flux density B2 in the magnetic core 20 that has occurred as the result of the detection signal having been supplied.SELECTED DRAWING: Figure 3
Inventors:
SUGAWARA SHOHEI
Application Number:
JP2022043021A
Publication Date:
September 29, 2023
Filing Date:
March 17, 2022
Export Citation:
Assignee:
OSAKI ELECTRIC CO LTD
International Classes:
G01R31/00; G01R1/22; G01R15/18
Attorney, Agent or Firm:
Osamu Yamamoto
Toru Miyamae
Junichi Matsuo
Ryota Suematsu
Yoko Mutoh
Toru Miyamae
Junichi Matsuo
Ryota Suematsu
Yoko Mutoh