公开(公告)号：US20200241051A1

公开(公告)日：2020-07-30

申请号：US16847141

申请日：2020-04-13

Applicant: Johnson Controls Technology Company

Inventor： Ashok Sridharan ,  Hariprasath Muthumanickam ,  Sushilkumar Madhukar Pagar ,  Atul Dinesh Shukla ,  Hariharasudhan Venugopal ,  Ankur Thareja

IPC: G01R15/20 ,  G01R21/133 ,  H01F38/28 ,  H02J50/10 ,  H02J50/00 ,  H04L29/08

Abstract: A sensor for measuring current flow includes a power generation circuit, a current measurement circuit and a microcontroller. The power generation circuit includes a current transformer that harvests energy from a load applied to the conductor and uses the harvested energy to power the current measurement circuit and microcontroller. The current measurement circuit includes a Hall effect sensor that outputs a voltage signal in response to detecting a magnetic flux generated by the flow of current through the conductor. The microcontroller calculates a current measurement based on the voltage signal received from the current measurement system. The Hall effect sensor is able to generate the voltage signal used to measure current flow at the same time that the current transformer harvests energy from the current flowing through the conductor. A fault detection system is able to alert a user to problems with the current transformer and/or the Hall effect sensor.

公开(公告)号：US20190113546A1

公开(公告)日：2019-04-18

申请号：US16157759

申请日：2018-10-11

Applicant: Johnson Controls Technology Company

Inventor： Stuti Jain ,  Mangesh Maruti Edake ,  Sushilkumar Madhukar Pagar ,  Vihari Venkatavidya Andukuri ,  Ashok Sridharan ,  Vivek Narain ,  Ankur Thareja ,  Hariharasudhan Venugopal

IPC: G01R15/20 ,  G01R21/133 ,  H02J50/10

Abstract: A sensor for measuring current flow includes a housing containing a power generation circuit and a current measurement circuit. The sensor is entirely self-contained and is non-invasively attachable to a conductor. The sensor is self-powered using energy harvested by the power generation circuit. The current measurement circuit allows for continuous, uninterrupted measurement of at least one property related to the flow of current through the conductor. The sensor wirelessly transmits data related to the measured current flow to a computing device. The sensor may be used with other similar sensors to form a wireless sensor network that monitors one or more properties related to the flow of current through one or more conductors within a system.