Prepayment system for supplying water or gas by means of a wireless intelligent card and meter for said system

A meter to register the bidirectional consumption of water or gas which comprises:

• a meter's main body which includes an entrance hole and an exit hole;
• a measuring chamber within the meter's main body;
• a supply and closing chamber within the meter's main body and in fluid communication with the measuring chamber;
• a water or gas supply/cut valve within the supply and closing chamber;
• a pair of upper and lower protective covers located on the main body of the meter, and
• a liquid crystal display located in the upper protective cover,
• a wireless electronic measuring, prepayment and gas or water supply cut device located within the upper protective cover of the meter's body,
• wherein the measuring chamber includes means with which to register the bidirectional consumption of water or gas, where the means to register the bidirectional consumption of water or gas are composed of a nutating disc and upper and lower covers which enclose the nutating disc to keep it in position and thus ensure its correct measuring movement, a rod said rod having a first end located in the center of and extending upwards toward the nutating disc through the upper cover which encloses the nutating disc, and a second end comprising a magnetic element,
• a first sensor element located on an adjacent external surface of the measuring chamber of the meter's main body and within the upper protective cover, where the first sensor element registers rotations of the magnetic element transmitted by the nutating disc in order to then calculate the volume of gas or water circulating within the measuring chamber, where the first sensor element is capable of recording the consumption of water or gas regardless of the flow direction;
• a converting device attached to the first sensor element to convert the magnetic signal produced by rotations of the magnetic element into a digital signal, where the converting device is also electrically connected to the wireless electronic measuring, prepayment control and water or gas supply cut device, where the wireless electronic measuring, prepayment control and water or gas supply cut device receives the digital signal and then transmits it to the liquid crystal display for its subsequent visualization;
• a closing mechanism which includes a gear train, a sliding disc and a fixed disc which can open or close the water or gas supply, where the opening or closing of the gear train is operated by an engine, which is controlled by the wireless electronic measuring, prepayment and water or gas supply cut device which is electrically connected to said engine;
• a printed circuit board antenna to communicate information via radio frequency between a wireless intelligent card and the wireless electronic measuring, prepayment and water or gas supply cut device;
• a battery located above the supply and closing chamber, which provides energy to the wireless electronic measuring, prepayment and water or gas supply cut device to register the bidirectional consumption of water or gas, to the engine which powers the closing mechanism and to the liquid crystal display;
• and
• a third sensor to detect the flow of water in a line supplying water to the meter and a relief valve, wherein the third sensor is connected to the wireless electronic measuring, prepayment and supply cut device in order to receive a signal from the sensor which detects water flow, in the event of not detecting any water flow, the wireless electronic measuring, prepayment and supply cut device will send a signal to open the relief valve in order to release any air contained within the pipes and which could circulate via the meter and be registered as consumption.