Unidirectional Coil Induction System for a Dartboard

Abstract

A unidirectional coil induction system for a dartboard comprises: a plurality of induction loops electrically connected to an electronic scoring circuit and a comparison circuit that are disposed on a dartboard. The dartboard is equally divided into a plurality of scoring areas, each scoring area includes at least one induction loop. All the induction loops wind in the same direction and are positioned in the dartboard. When the dart lands on the dartboard, one of the induction loops will produce a positive induction signal, and a neighboring induction loop will produce a negative induction signal, and then the comparison circuit will inform the electronic scoring circuit to score after determining the induction loop of the scoring area in which the dart lands. Therefore, the present invention can prevent the problem of wrong scoring caused by the dart synchronously cutting several induction loops, and can improve the scoring accuracy.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustrative view of showing a conventional induction system for a dartboard;

FIG. 2 is an exploded view of a unidirectional coil induction system for a dartboard in accordance with the present invention;

FIG. 3 is an illustrative view of the coils in accordance with the present invention;

FIG. 4 is an operational view in accordance with the present invention of showing the coils when the dart is landing; and

FIG. 5 is a flow chart of showing the scoring operation in accordance with the present invention

Claims

1. A unidirectional coil induction system for a dartboard, comprising: a dart, a dartboard, a frame, a plurality of induction loops, an electronic scoring circuit, the dartboard and the frame being divided into a plurality of scoring areas, each scoring area being provided with at least one induction loop, characterized in that: the induction loops wind in the same direction and are positioned in the dartboard;a comparison circuit is electrically connected to the respective induction loops and the electronic scoring circuit, when the dart lands on the dartboard, one of the induction loops will produce a positive induction signal, and a neighboring induction loop will produce a negative induction signal, and then the comparison circuit will inform the electronic scoring circuit to score after determining the induction loop of the scoring area in which the dart lands.

2. The unidirectional coil induction system for a dartboard as claimed in claim 1, wherein the magnetic dart will pass through the induction loops during landing.

3. The unidirectional coil induction system for a dartboard as claimed in claim 2, wherein the induction loops on the dartboard are arranged in a staggered manner, so that the scoring area with the staggered induction loops will sense two positive induction signals.

4. The unidirectional coil induction system for a dartboard as claimed in claim 2, wherein the comparison circuit will inform the electronic scoring unit to score by wireless means after determining the induction loop of the scoring area in which the dart lands.

5. The unidirectional coil induction system for a dartboard as claimed in claim 1, wherein: the dartboard serves as a target for the dart, in a front surface of the dartboard are formed grooves that cross one another, and at each position where the grooves meet is formed a through hole that penetrates from the front surface to a rear surface of the dartboard, the grooves are radially arranged to separate the dartboard equally into a plurality of fan-shaped scoring areas and a central circular scoring area;the frame is arranged to form a net-shaped structure according to the arrangement of the scoring areas, and the frame is received in the groove of the dartboard;each of the induction loops has a first signal end and a second signal end and winds around the respective scoring areas, the respective induction loops winds from the first signal ends to the second signal end, and the induction loops wind in the same direction and are positioned in receiving grooves of the frame;the comparison circuit is disposed on the dartboard and is connected to the respective induction loops;the electronic scoring circuit is disposed on the dartboard and is connected to the comparison circuit and serves to figure out the score of the respective scoring areas of the dartboard based on combined signal of the comparison circuit.

6. The unidirectional coil induction system for a dartboard as claimed in claim 2, wherein: the dartboard serves as a target for the dart, in a front surface of the dartboard are formed grooves that cross one another, and at each position where the grooves meet is formed a through hole that penetrates from the front surface to a rear surface of the dartboard, the grooves are radially arranged to separate the dartboard equally into a plurality of fan-shaped scoring areas and a central circular scoring area;the frame is arranged to form a net-shaped structure according to the arrangement of the scoring areas, and the frame is received in the groove of the dartboard;each of the induction loops has a first signal end and a second signal end and winds around the respective scoring areas, the respective induction loops winds from the first signal ends to the second signal end, and the induction loops wind in the same direction and are positioned in receiving grooves of the frame;the comparison circuit is disposed on the dartboard and is connected to the respective induction loops;the electronic scoring circuit is disposed on the dartboard and is connected to the comparison circuit and serves to figure out the score of the respective scoring areas of the dartboard based on combined signal of the comparison circuit.

7. The unidirectional coil induction system for a dartboard as claimed in claim 3, wherein: the dartboard serves as a target for the dart, in a front surface of the dartboard are formed grooves that cross one another, and at each position where the grooves meet is formed a through hole that penetrates from the front surface to a rear surface of the dartboard, the grooves are radially arranged to separate the dartboard equally into a plurality of fan-shaped scoring areas and a central circular scoring area;the frame is arranged to form a net-shaped structure according to the arrangement of the scoring areas, and the frame is received in the groove of the dartboard;each of the induction loops has a first signal end and a second signal end and winds around the respective scoring areas, the respective induction loops winds from the first signal ends to the second signal end, and the induction loops wind in the same direction and are positioned in receiving grooves of the frame;the comparison circuit is disposed on the dartboard and is connected to the respective induction loops;the electronic scoring circuit is disposed on the dartboard and is connected to the comparison circuit and serves to figure out the score of the respective scoring areas of the dartboard based on combined signal of the comparison circuit.

8. The unidirectional coil induction system for a dartboard as claimed in claim 4, wherein: the dartboard serves as a target for the dart, in a front surface of the dartboard are formed grooves that cross one another, and at each position where the grooves meet is formed a through hole that penetrates from the front surface to a rear surface of the dartboard, the grooves are radially arranged to separate the dartboard equally into a plurality of fan-shaped scoring areas and a central circular scoring area;the frame is arranged to form a net-shaped structure according to the arrangement of the scoring areas, and the frame is received in the groove of the dartboard;each of the induction loops has a first signal end and a second signal end and winds around the respective scoring areas, the respective induction loops winds from the first signal ends to the second signal end, and the induction loops wind in the same direction and are positioned in receiving grooves of the frame;the comparison circuit is disposed on the dartboard and is connected to the respective induction loops;the electronic scoring circuit is disposed on the dartboard and is connected to the comparison circuit and serves to figure out the score of the respective scoring areas of the dartboard based on combined signal of the comparison circuit.

9. The unidirectional coil induction system for a dartboard as claimed in claim 1, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

10. The unidirectional coil induction system for a dartboard as claimed in claim 2, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

11. The unidirectional coil induction system for a dartboard as claimed in claim 3, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

12. The unidirectional coil induction system for a dartboard as claimed in claim 4, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

13. The unidirectional coil induction system for a dartboard as claimed in claim 5, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

14. The unidirectional coil induction system for a dartboard as claimed in claim 6, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

15. The unidirectional coil induction system for a dartboard as claimed in claim 7, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.

16. The unidirectional coil induction system for a dartboard as claimed in claim 8, wherein the induction loops will produce a forward distorted wave when the magnetic dart hits lines of magnetic force at a high speed, and when the dart decelerates, the induction loops will produce a backward distorted wave and will output a positive induction signal, the positive induction signal creates a forward distorted signal and a backward distorted signal, and neighboring induction loops will produce a negative induction signal, and the negative induction signal creates a backward distorted signal and a forward distorted signal.