Terminal shields for current sensors and circuit breakers
By configuring the magnetic inductive elements on multiple imaginary circles of the current path and processing the output using a computing circuit, the problem of restricted configuration and interference in the prior art is solved, and a higher configuration freedom and measurement accuracy are achieved.
CN115066621BActive Publication Date: 2025-04-01MITSUBISHI ELECTRIC CORP
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Patent Information
- Application Number
- CN202180012731.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2020-02-19
- Filing Date
- 2021-02-02
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2041-02-02
AI Technical Summary
Technical Problem
Existing current sensors cannot configure multiple magnetic inductive elements at equal intervals on the same imaginary circle, resulting in limited freedom of configuration and difficulty in suppressing interference effects.
Method used
By configuring multiple magnetic inductive elements on multiple imaginary circles with different radii as the center of the current path, and calculating the output of the magnetic inductive elements using a computing circuit to improve the freedom of configuration and suppress interference influence.
Benefits of technology
It realizes the freedom of the configuration of magnetic inductive elements, effectively suppresses interference effects, and improves the measurement accuracy of the current sensor.
✦ Generated by Eureka AI based on patent content.
Abstract
A current sensor measures a current flowing in a current path (11), and includes a plurality of magnetically sensitive elements (20a, 20b, 20c, 20d) and an operation circuit. The plurality of magnetically sensitive elements (20a, 20b, 20c, 20d) are respectively arranged on corresponding virtual circles among a plurality of virtual circles (30a, 30b, 30c, 30d) with different radii and centered around a center (O) of the current path (11) in a plane perpendicular to the extension direction of the current path (11). The operation circuit calculates the value of the current flowing in the current path (11) based on the outputs of the plurality of magnetically sensitive elements (20a, 20b, 20c, 20d). The plurality of magnetically sensitive elements (20a, 20c, 20c, 20d) include at least two magnetically sensitive elements (20a, 20c) whose sensitivity axes (21) are parallel to each other and face in opposite directions.
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