Patent ID: 8763773

Claim:
A vehicle-related arrangement for metal detection and using an arm-shaped contact means related to a systems for propelling an electrically propellable vehicle, powered by one or several batteries or a set of batteries, along a roadway comprising a plurality of roadway sections or portions, the system comprising: “a” a plurality of roadway portions for subdividing the roadway, into said roadway sections, wherein each one of these roadway sections comprises one or more elongated tracks or slits having conductors introduced therein adapted to be supplied with current and put under voltage, and being connectable over a switch to one or more vehicle-external electric power sources, including vehicle-external electric stations, for thereby enabling charging of said set of batteries belonging to the vehicle, but primarily driving the vehicle along the roadway and its roadway sections, and “b” one or more driveable or propellable vehicles which may be driven by means of an electric motor or motors, with each of the respective vehicles comprising a control circuit adapted for necessary distribution of power, adapted for creating a required power and/or speed control, wherein said vehicle is provided on its underneath side with contact means comprising current collectors which are displaceable up and down and sideways, in relation to the direction of transportation of the vehicle, wherein said elongated track or tracks and its conductors extend along the roadway and the roadway sections, and wherein said contact means is coordinated with a vehicle-related control equipment for creating an adaptation of the contact means so as to at least offer a mechanical and electrical contact with said conductors, wherein coordination between the conductors put under voltage, belonging to the roadway section, and the contact means of the vehicle occurs via coordinated current collectors, such as in the form of contact springs, adapted for mechanical and electrical cooperation with respective ones of the conductors put under voltage, wherein the detecting arrangement comprises one or more coils arranged for sensing the variation of the magnetic field, based on a horizontal distance between the coils and metal parts belonging to the one or more elongated tracks and/or a vertical distance between the coils and the one or more elongated tracks, and wherein the coils are coordinated with a control equipment.