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Hall current sensor

A Hall current and sensor technology, applied in the field of sensors, can solve problems such as poor anti-interference ability and inconvenient installation

Inactive Publication Date: 2015-12-23
NINGBO HUAYU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Hall current sensor in the prior art has the problems of poor anti-interference ability and inconvenient installation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] The raw materials were weighed according to the composition and parts by weight of the ring mounting part in Example 1 in Table 1. Among them, the fibrous material is carbon fiber, the metal powder is iron powder with a particle size of 150nm, the antistatic agent is fatty acid polyol ester, the toughening agent is nano-calcium carbonate coated with POE-g-MAH, and the flame retardant is phosphorus-g-MAH. The nitrogen flame retardant, the formaldehyde absorber melamine, the formic acid absorber is sodium oxide, and the antioxidant is a commercially available antioxidant.

[0068] During preparation, the annular mounting part is made by injection molding, extrusion, extrusion or blow molding.

Embodiment 2

[0070] The raw materials were weighed according to the composition and parts by weight of the annular mounting part of Example 2 in Table 1. Among them, the fibrous material is carbon fiber, the metal powder is iron powder with a particle size of 150nm, the antistatic agent is fatty acid polyol ester, the toughening agent is nano-calcium carbonate coated with POE-g-MAH, and the flame retardant is phosphorus-g-MAH. The nitrogen flame retardant, the formaldehyde absorber melamine, the formic acid absorber is sodium oxide, and the antioxidant is a commercially available antioxidant.

[0071]During preparation, the annular mounting part is made by injection molding, extrusion, extrusion or blow molding.

Embodiment 3

[0073] The raw materials were weighed according to the composition and parts by weight of the ring mounting part of Example 3 in Table 1. Among them, the fibrous material is carbon fiber, the metal powder is iron powder with a particle size of 150nm, the antistatic agent is fatty acid polyol ester, the toughening agent is nano-calcium carbonate coated with POE-g-MAH, and the flame retardant is phosphorus-g-MAH. The nitrogen flame retardant, the formaldehyde absorber melamine, the formic acid absorber is sodium oxide, and the antioxidant is a commercially available antioxidant.

[0074] During preparation, the annular mounting part is made by injection molding, extrusion, extrusion or blow molding.

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Abstract

The invention, which belongs to the technical field of the machinery, provides a hall current sensor. With hall current sensor, a problem of weak anti-interference capability of the existing hall current sensor can be solved. The hall current sensor comprises an insulated housing; the middle part of the insulated housing is hollowed out to form an accommodation cavity; and an annular mounting part for installing a lead is arranged in the accommodation cavity. An annular magnetic core is arranged between the annular mounting part and the insulated housing; the annular mounting part and the annular magnetic core are arranged coaxially. A notch penetrating the annular magnetic core is formed in the annular magnetic core; a hall element and a circuit board connected with the hall element are installed in the notch. Besides, a connector connected with the circuit board is arranged at the outer surface of the insulated housing; and the connector contains a connecting part and a row-pin unit with four pins, wherein the connecting part and the row-pin unit are arranged in parallel. The annular mounting part is made of a paraform composite material. The hall current sensor is provided with high anti-interference capability and convenient installation.

Description

technical field [0001] The invention belongs to the technical field of sensors and relates to a Hall current sensor. Background technique [0002] The Hall current sensor is based on the working principle of the Hall direct amplifier, that is, when the primary current IP flows through a long wire, a magnetic field will be generated around the wire, and the magnitude of this magnetic field is proportional to the current flowing through the wire , the generated magnetic field is gathered in the magnetic ring, and is measured and amplified by the Hall device in the air gap of the magnetic ring. The output voltage Vs accurately reflects the primary current Ip and is processed by a special circuit for the change of the primary current. Detection elements, Hall current sensors are widely used in frequency conversion speed control devices, inverter devices, UPS power supplies, inverter welding machines, electrolytic plating, CNC machine tools, microcomputer monitoring systems, powe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
Inventor 周年林王勇
Owner NINGBO HUAYU ELECTRONICS
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