# US 2019/0170792 A1 · Plug-through energy monitor

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- Number: US 2019/0170792 A1
- Document ID: US20190170792A1
- Status: Published application
- Kind: A1
- Application number: 15/785,355
- Filed: 2017-10-16
- Published: 2019-06-06
- Earliest claimed: 2012-12-28
- Inventors: Micheal Lorek
- Web page: https://patentgrep.com/patent/US20190170792A1

## CPC

- G01R 15/18: using inductive devices, e.g. transformers
- G01R 15/181: {using coils without a magnetic core, e.g. Rogowski coils}
- G01R 19/0092: {Measuring current only}
- G01R 21/002: {Measuring real component}
- G07C 3/00: Registering or indicating the condition or the working of machines or other apparatus, other than vehicles
- G01R 22/063: {related to remote communication}
- G06K 1/00: Methods or arrangements for marking the record carrier in digital fashion
- G07C 1/00: Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people (registering or indicating the working of machines or vehicles G07C3/00, G07C5/00)
- G07C 2205/00: Indexing scheme relating to group G07C5/00
- H10P 95/00: Generic processes or apparatus for manufacture or treatments not covered by the other groups of this subclass
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- G07C: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10

## Abstract

A sensor for inductively measuring the current in a conductor flowing through a recess in a printed circuit board. Wire loops on the printed circuit board function as the inductive current sensor. Combined with a voltage measurement, the energy being dissipated in the conductor's load circuit can be determined and transmitted wirelessly. Control circuits can be integrated with the metering hardware to enable the remote modulation of the load's power. The inductive sensor(s) can be used to track differences between the load's supply and return currents. If a fault is detected, the circuit can be broken for safety, serving a ground fault circuit interruption (GFCI) purpose. The claimed invention can report measurements in real time, providing time series data for analyses sufficient to detect or identify an anomaly in the function and operation within a system's load or electrical power distribution network.

## Claims

### Claim 1

A current monitor, comprising:
a. a circuit board with a current sensor comprised of one or more inductive pickup coils of wire loops, the area inside the loops situated at an angle to the plane of the board;
b. at least two recesses in the board from which conductors are removably inserted;
c. wherein the pickup coil is located between the recesses in the board;
d. wherein, the conductors are current-carrying,
e. wherein the currents in pairs of conductors are of the same magnitude but flowing in opposite directions;
f. wherein the pickup coil is sensitive to a magnetic field created by the flow of current; and
g. wherein the pickup coil generates a signal proportional to the currents flowing through the plane of the circuit board;
h. wherein the pickup coil generates the signal continuously;
i. wherein the pickup coil also measures current flowing in both hot and neutral wires separately.