Abstract: There is described a system to measure the electrical consumption of a household. This system consists of a network of measuring devices that are attached to wires between electrical appliances and circuit breakers and of a communication and processing unit that receives measurement data from the measuring devices. Low precision sensors based on the Hall effect may be used for obtaining precise measurements of energy consumption by providing a casing for the measuring devices that ensures a fixed, known, and precise alignment with respect to the wire to which it is attached. Low precision sensors based on the Hall effect may also be used by performing a correction calibration of measured data.

Abstract: The electric bicycle described includes a fork assembly, a seat post, and a main frame including one or more structural members forming the main frame and includes a tube that is at least partially hollow and has an internal battery compartment integrally formed therein. The internal battery compartment adapted to receive a battery therein to power an electric motor of the bicycle. A distal end of the tube has an opening formed therein which communicates with the internal battery compartment. The battery is insertable into the internal battery compartment through the opening. The battery is securable in the internal battery compartment within the tube by at least one of the seat post and an extremity of the fork assembly.

Abstract: The electric bicycle described includes a fork assembly, a seat post, and a main frame including one or more structural members forming the main frame and includes a tube that is at least partially hollow and has an internal battery compartment integrally formed therein. The internal battery compartment adapted to receive a battery therein to power an electric motor of the bicycle. A distal end of the tube has an opening formed therein which communicates with the internal battery compartment. The battery is insertable into the internal battery compartment through the opening. The battery is securable in the internal battery compartment within the tube by at least one of the seat post and an extremity of the fork assembly.

Abstract: There is described a system to measure the electrical consumption of a household. This system consists of a network of measuring devices that are attached to wires between electrical appliances and circuit breakers and of a communication and processing unit that receives measurement data from the measuring devices. Low precision sensors based on the Hall effect may be used for obtaining precise measurements of energy consumption by providing a casing for the measuring devices that ensures a fixed, known, and precise alignment with respect to the wire to which it is attached. Low precision sensors based on the Hall effect may also be used by performing a correction calibration of measured data.