Three-dimensional-information detecting system and three-dimensional-information inputting device
A three-dimensional-information detecting system includes a switching portion that sequentially selects sensor coils of a three-dimensional-information detecting device. Electromagnetic coupling is used to perform signal transmission and reception between the sensor coils and input coils in input elements of a three-dimensional-information inputting device which are mutually perpendicularly provided. A signal received by a selected sensor coil is detected by a detecting portion. From the detected signal, three-dimensional information, such as the position and attitude of the three-dimensional-information inputting device, is calculated by a control unit.
1. A three-dimensional-information detecting system comprising:
three-dimensional-information inputting means including a plurality of input coils for inputting three-dimensional information;
a plurality of sensor coils provided along a detecting surface so as to intersect one another, the sensor coils being electromagnetically coupled with the plurality of input coils;
selecting means which selects sensor coils from among the plurality of sensor coils in a coil-switching manner;
signal generating means which uses electromagnetic coupling to generate signals to be transmitted and received between the plurality of input coils and the selected sensor coils;
signal detecting means which detects signals received by the selected sensor coils or the plurality of input coils; and
calculating means which, based on the signals detected by the signal detecting means, calculates thee-dimensional information of the three-dimensional-information inputting means in three-dimensional space,
wherein:
in the three-dimensional-information inputting means, the plurality of input coils include first, second, and third input coils; and
the central axes of the first, second, and third input coils are at right angles to one another so as not to magnetically interfere with one another and so as not to directly intersect one another.
2. The three-dimensional-information detecting system according to claim 1 , wherein the first, second, and third input coils are provided for use with a right hand.
3. The three-dimensional-information detecting system according to claim 1 , wherein the first, second, and third input coils are provided for use with a left hand.
4. The three-dimensional-information detecting system according to claim 1 , wherein:
the form of the three-dimensional-information inputting means is a sphere; and
the first, second, and third input coils are provided in the sphere.
5. The three-dimensional-information detecting system according to claim 4 , wherein a composite central position of the first, second, and third input coils, and the central position of the sphere coincide with each other.
6. The three-dimensional-information detecting system according to claim 1 , wherein each input coil has a form wound around a magnetic substance.
7. The three-dimensional-information detecting system according to claim 1 , wherein the first, second, and third input coils have air cores.
8. The three-dimensional-information detecting system according to claim 1 , wherein the first, second, and third input coils respectively connect to capacitors for resonance which combine with the first, second, and third input coils to form resonant circuits having different frequencies.
9. The three-dimensional-information detecting system according to claim 1 , wherein the calculating means calculates at least an attitude of the three-dimensional-information inputting means in three-dimensional space based on the signals detected by the signal detecting means.
10. The three-dimensional-information detecting system according to claim 1 , wherein the calculating means calculates at least coordinates of the three-dimensional-information inputting means in three-dimensional space based on the signals detected by the signal detecting means.
11. The three-dimensional-information detecting system according to claim 1 , wherein the calculating means calculates an attitude and coordinates of the three-dimensional-information inputting means in three-dimensional space based on the signals detected by the signal detecting means.
12. The three-dimensional-information detecting system according to claim 1 , wherein:
an X-coordinate and Y-coordinate of each input coil are calculated based on at least three signals in the vicinity of a peak value in the signals detected by the signal detecting means; and
an attitude and/or coordinates of the three-dimensional-information inputting means are calculated by obtaining a height of the input coil from the width of signal distribution at a predetermined level value of the detected signals.
13. The three-dimensional-information detecting system according to claim 1 , wherein, regarding an attitude of the three-dimensional-information inputting device, the calculating means obtains an angle of inclination and azimuth angle of the three-dimensional-information inputting means from relationships of the signals detected for the input coils by the signal detecting means.
14. The three-dimensional-information detecting system according to claim 13 , wherein the calculating means obtains the angle of inclination and azimuth angle of the three-dimensional-information inputting means from a sub-signal ratio of the detected signals corresponding to the input coils.
15. The three-dimensional-information detecting system according to claim 13 , wherein the calculating means obtains the angle of inclination and azimuth angle of the three-dimensional-information inputting means from ratios of left-and-right half-side widths of the detected signals corresponding to the input coils.
16. The three-dimensional-information detecting system according to claim 1 , wherein the signal generating means generates signals having a plurality of frequencies corresponding to the input coils, and signals having different frequencies are transmitted and received between the plurality of input coils and the selected sensor coils.
17. The three-dimensional-information detecting system according to claim 1 , wherein signals are transmitted from the input coils by supplying currents from the signal generating means to the input coils, and the signal detecting means detects signals generated in the sensor coils.
18. The thee-dimensional-information detecting system according to claim 1 , wherein signals are transmitted from the sensor coils by supplying currents from the signal generating means to the sensor coils, and the signal detecting means detects signals generated in the input coils.
19. The three-dimensional-information detecting system according to claim 1 , wherein, after signals are transmitted from the sensor coils by supplying currents from the signal generating means to the sensor coils, the input coils receive the transmitted signals and send back the received signals to the sensor coils, and the signal detecting means detects the signals received by the sensor coils.
20. A thee-dimensional-information inputting device comprising a plurality of input coils for inputting three-dimensional information,
wherein:
the three-dimensional-information inputting device inputs three-dimensional information to a three-dimensional-information detecting device by using electromagnetic coupling to transmit and receive signals between the plurality of input coils and the three-dimensional-information detecting device;
the plurality of input coils include first, second, and third input coils;
the central axes of the first, second, and third input coils are at right angles to one another so as not to magnetically interfere with one another and so as not to directly intersect one another, and
the first, second, and third input coils are provided for use with a right hand.
21. A three-dimensional-information inputting device comprising a plurality of input coils for inputting three-dimensional information, wherein:
the three-dimensional-information inputting device inputs three-dimensional information to a three-dimensional-information detecting device by using electromagnetic coupling to transmit and receive signals between the plurality of input coils and the three-dimensional-information detecting device;
the plurality of input coils include first, second, and third input coils;
the central axes of the first, second, and third input coils are at right angles to one another so as not to magnetically interfere with one another and so as not to directly intersect one another; and
the first, second, and third input coils are provided for use with a left hand.
22. The thee-dimensional-information inputting device according to claim 20 , wherein:
the form of the three-dimensional-information inputting device is a sphere; and
the first, second, and third input coils are provided in the sphere.
23. The three-dimensional-information inputting device according to claim 22 , wherein a composite central position of the first second, and third input coils, and the central position of the sphere coincide with each other.
24. The three-dimensional-information inputting device according to claim 20 , wherein each input coil has a form wound around a magnetic substance.
25. The thee-dimensional-information inputting device according to claim 20 , wherein the first, second, and third input coils have air cores.
26. The three-dimensional-information inputting device according to claim 20 , wherein the first, second, and third input coils respectively connect to capacitors for resonance which combine with the first, second, and third input coils to form resonant circuits having different frequencies.