The advantages of this transformer-much less method as in comparison with the transformer approach are direct sensing of current and voltage that permits AC power and energy measurements for non-resistive loads, tamper proof for safe power measurements, compact sizes, and low prices. A key characteristic of the present invention is that there is no want for a transformer when sensing voltage and present. Accordingly, many modifications may be made by one of bizarre skill within the artwork without departing from the spirit and scope of the present invention. Although the current invention has been described in accordance with the embodiments proven, one in every of extraordinary talent in the art will readily acknowledge that there could be variations to the embodiments and people variations would be inside the spirit and scope of the current invention. The following description is offered to enable certainly one of atypical talent within the artwork to make and use the invention and is offered within the context of a patent utility and its necessities. FIG. 7 is an illustration of circuit for voltage and current sensing for the emitter follower configuration for a 3-part energy line software. Under 35 U.S.C. 120, this software is a Divisional Application and claims precedence to Ser.

FIG. 6 is an illustration of circuit for voltage sensing transistor in the open collector configuration with a load resistor RL 69. An optical transistor sixty nine has a base terminal B that is optically coupled to the IF LED 66. The emitter terminal E is related to the Vss terminal 71. The collector terminal C is related to the second terminal of a resistor RL 69 within the open collector configuration. Pat. No. 9,000,753, entitled "SMART METER VOLTAGE AND Current SENSING Using OPTICALLY COUPLED ISOLATORS", which is included herein by reference. Using optically coupled isolators, the sensed voltages in the high voltage energy traces are optically coupled and electrically remoted to the low voltage circuits. Circuits for the voltage and present sensing method are described using resistors and optically coupled isolators. These voltages are optically coupled and electrically isolated to the inputs of the low voltage circuits through the use of optically coupled isolators. Furthermore, the price of resistors and isolators are less as in comparison with that of the transformers. The undertaking is estimated to price $111 million, and this cost might be passed on to the ratepayers of NJ via electric charge increases on month-to-month payments.

The system and technique should be easily applied, value effective and adaptable to present systems. FIG. Three is an illustration of circuit design for a present sensing portion of voltage and current sensors 39 within the good meter three of FIG. 2 for a single-section energy line system. FIG. 4 is an illustration of circuit for current sensing for the open collector configuration with a load resistor connected to the collector. A transformer-much less methodology and system for voltage and present sensing utilizing voltage drops across resistors is disclosed. The current invention is said usually to meters for measuring power and extra significantly to a sensible meter system. In this embodiment, the local server 1 points a command to the coordinator 2 which executes the command by sending a corresponding information packet wirelessly to the sensible meters 3 by a radio frequency (RF) hyperlink, e.g. ZigBee which will or may not assist an business standard such as IEEE 802.14.5. Then the sensible meters 3 ship an appropriate response again to the coordinator 2 by the identical RF hyperlink. The smart meter system 50 is a many-to-one information communication topology. Accordingly, what is required is a system and methodology that addresses such needs.

In a primary facet a method of sensing present inside a smart meter is disclosed. In a second side, a technique of sensing voltage inside a wise meter is disclosed. FIG. Three is an illustration of circuit design for present sensing transistor in an emitter follower configuration with load resistor related to the emitter. FIG. 5 is an illustration of circuit for voltage sensing transistor in an emitter follower configuration with a load resistor linked to the emitter. A sensible meter system voltage and present sensing are carried out as voltage drops throughout a shunt resistor in collection with the ability line or from a voltage divider linked across the power lines. FIG. 6 is an illustration of circuit for voltage sensing transistor in an open collector configuration with a load resistor related to the collector. FIG. 2 is an illustration of a wise meter in accordance with an embodiment. FIG. 1 is an illustration of the smart meter system 50 in accordance with an embodiment.