Magnetic sensor and an integrated circuit

a magnetic sensor and integrated circuit technology, applied in the field of circuit technology, can solve the problems of low efficiency, low operation efficiency of fan and water pump, and motor cannot operate at a relatively high working poin

Inactive Publication Date: 2018-08-16
JOHNSON ELECTRIC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The magnetic sensor system enhances the efficiency of synchronous motor operation by ensuring consistent rotor direction and reducing energy wastage, improving the overall operational efficiency and energy utilization of the motor.

Problems solved by technology

To ensure the starting of a conventional synchronous motor, a starting point of the motor is set to be low, which results in that the motor cannot operate at a relatively high working point, thus the efficiency is low.
Accordingly, in applications such as a fan and water pump, the impeller driven by the rotor has straight radial vanes, which results in a low operational efficiency of the fan and water pump.

Method used

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  • Magnetic sensor and an integrated circuit
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Examples

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Embodiment Construction

[0034]In the following detailed description, numerous specific details are set forth by way of examples in order to provide a thorough understanding of the relevant teachings. However, it should be apparent to those skilled in the art that the present teachings may be practiced without such details. In other instances, well known methods, procedures, systems, components, and / or circuitry have been described at a relatively high-level, without detail, in order to avoid unnecessarily obscuring aspects of the present teachings.

[0035]Throughout the specification and claims, terms may have nuanced meanings suggested or implied in context beyond an explicitly stated meaning. Likewise, the phrase “in one embodiment / example” as used herein does not necessarily refer to the same embodiment and the phrase “in another embodiment / example” as used herein does not necessarily refer to a different embodiment. It is intended, for example, that claimed subject matter include combinations of example ...

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Abstract

The present teaching relates to a method / apparatus for a magnetic sensor. The apparatus of the magnetic sensor resides in a housing and includes an input port and an output port, both extending from the housing. The apparatus also includes an electrical circuit which comprises a magnetic field detecting circuit, configured to detect an external magnetic field and output a magnetic induction signal that is indicative of information related to the external magnetic field, an output control circuit coupled between the magnetic field detecting circuit and the output port, and a state control circuit coupled with the output control circuit and configured to determine whether a predetermined condition is satisfied and signal the same to the output control circuit. When the predetermined condition is satisfied, the state control circuit is at least responsive to the magnetic induction signal to enable the output control circuit to control the magnetic sensor to operate in at least one of a first state and a second state. In the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor. In the second state, a load current flows in a second direction opposite of the first direction from outside of the magnetic sensor into the magnetic sensor via the output port. When the predetermined condition is not satisfied, the state control circuit enables the output control circuit to control the magnetic sensor to operate in a third state.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This present application is a continuation of U.S. patent application Ser. No. 15 / 231,086 filed Aug. 8, 2016, which is a continuation-in-part of U.S. patent application 14 / 822,353 filed Aug. 10, 2015 (issued as U.S. Pat. No. 9,755,555 on Sep. 5, 2017), which claims priority to Chinese Patent Application 201410390592.2 filed on Aug. 8, 2014, Chinese Patent Application 201410404474.2 filed on Aug. 15, 2014, International Application PCT / CN2015 / 086422 filed on Aug. 7, 2015, Chinese Patent Application CN201610203646.9 filed on Apr. 1, 2016, and Chinese Patent Application CN201610387977.2 filed on Jun. 2, 2016, all of which are Incorporated Herein By Reference In Their Entirety.BACKGROUND1. Technical Field[0002]The present teaching relates to a field of circuit technology. In particular, the present teaching relates to a magnetic sensor. The present teaching further relates to a driver for a low-power permanent magnetic motor.2. Discussion of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H02P6/16H02P6/22G01R33/07G01D5/14H02P6/26H02P6/30H02K11/215
CPCH02P6/22H02P2207/05G01R33/07G01D5/145H02P6/16H02P6/26H02P6/30H02K11/215
InventorSUN, CHI PINGXIN, FEIWONG, KENYEUNG, SHING HINGUO, HUI MINLOU, SHU ZUOCHEN, XIAO MINGCAI, GUANG JIEWONG, CHUN FAIHUANG, SHU JUANJIANG, YUN LONGLI, YUELIU, BAO TINGWANG, EN HUIYANG, XIU WENLIU, LI SHENGCUI, YAN YUN
OwnerJOHNSON ELECTRIC SA