Wireless scoring machine for epee and foil fencing

Abstract

A wireless scoring machine for epee and foil fencing is used to generate and receive radio signals transmitted through a traditional epee or foil for counting scores and displaying the scores, wherein the tip of the blade of an epee or a foil equipped with a conductive element electrically is connected to a radio transmitter box. When the tip is in contact with a body of a fencer, the conductive element and the body form a closed circuit to transmit electric power to actuate a radio transmitter to transmit radio signals followed by a radio receiver base station receiving the radio signals and continuously generating electric current to actuate a relay to enable a calculator to calculate the scores followed by displaying the scores.

1 . A wireless scoring machine for epee and foil fencing comprises a set of two radio transmitter boxes (indicated as  2 ) in  FIG. 1  or (indicated as  4 ) in  FIG. 2 , a common radio receiver base station (indicated as  5 ) in  FIG. 3  and a common calculator/displayer (indicated as  6 ) in  FIG. 3 ;
 wherein the radio transmitter box (indicated as  2 ) in  FIG. 1  is applied to epee fencing, and the radio transmitter box is provided with a direct current power unit (indicated as  21 ) and a radio transmitter (indicated as  22 ). When the conductive element (indicated as  11 ) is in contact with the body of a fencer, it converts the open circuit into a closed circuit between the two power wires (indicated as  12  and  13 ), and in turn actuate the radio transmitter to transmit radio signals;   wherein the radio transmitter box (indicated as  4 ) in  FIG. 2  is applied to foil fencing, and the radio transmitter box is provided with a direct current power unit (indicated as  41 ), an additional direct current power unit (indicated as  42 ), a radio transmitter (indicated as  43 ), and a relay (indicated as  44 ). When the conductive element (indicated as  31 ) is in contact with the body of a fencer, it converts the closed circuit into an open circuit between the two power wires (indicated as  32  and  33 ), and cause an open circuit “OFF” between two electrodes A and C of the relay. As the result of the open circuit (i.e. OFF) in the relay, a closed circuit (i.e. ON) between the electrodes A and B is formed to actuate the radio transmitter to transmit signals;   wherein the radio receiver base station (indicated as  5 ) and the calculator/displayer (indicated as  6 ) in  FIG. 3  are applied to both of the epee and foil radio transmitting boxes. The radio receiver base station is provided with a relay (indicated as  51 ), a radio receiver (indicated as  52 ) electrically connected to the relay, and a direct current power unit (indicated as  53 ) supplying electric power to the radio receiver and continuously the relay, the relay is also electrically connected to the calculator/displayer (indicated as  6 ) which is powered by a second direct current power unit (indicated as  61 );   the wireless scoring machine for epee and foil fencing characterizes in that: when the radio receiver  52  of the radio receiver base station  5  receives radio signals transmitted by the radio transmitter  22  or  43  of the radio transmitter box  2  or  4 , the radio receiver  52  generates electric current to actuate the relay  51  so that an open circuit “OFF” between two electrodes D and E of the relay  51  is converted into a closed circuit “ON” between the electrodes D and F, and input signals generated from an input terminal  62  of the calculator/displayer  6  are transmitted through the closed circuit “ON” between the two electrodes D and F so that the calculator/displayer  6  calculates and adds scores while displaying the scores to finish recording and displaying the scores.