Data communication system
First Claim
1. A data communication system installed in an electric machine including an electrically conductive body insulated from the ground and having a surface, the system transmitting and receiving information between two different locations in the electric machine, the system comprising:
- a transmission terminal and a reception terminal both mounted on the electric machine;
a transmission-side opposed conductive member provided on the transmission terminal so as to be opposed to the conductive body;
a transmission circuit provided on the transmission terminal for applying voltage between the transmission-side opposed conductive member and the conductive body, thereby changing electric field generated on the entire surface of the conductive body, said voltage being changed according to information to be transmitted;
a reception-side opposed conductive member provided on the reception terminal so as to be opposed to the conductive body, thereby being capable of generating potential difference according to the electric field between the conductive body and the reception-side opposed conductive member; and
a reception circuit provided on the reception terminal for receiving the information based on a change in the potential difference between the conductive body and the reception-side opposed conductive member.
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Accused Products
Abstract
A data communication system installed in an electric machine includes a transmission terminal and a reception terminal both mounted on the electric machine, a transmission-side opposed conductive member disposed on the transmission terminal, a transmission circuit for applying voltage between the transmission-side conductive member and the conductive body, thereby changing electric field generated on the entire surface of the conductive body, the voltage being changed according to information to be transmitted, a reception-side opposed conductive member provided on the reception terminal, thereby being capable of generating potential difference according to the electric field between the conductive body and the reception-side opposed conductive member, and a reception circuit for receiving the information based on a change in the potential difference between the conductive body and the reception-side opposed conductive member.
8 Citations
42 Claims
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1. A data communication system installed in an electric machine including an electrically conductive body insulated from the ground and having a surface, the system transmitting and receiving information between two different locations in the electric machine, the system comprising:
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a transmission terminal and a reception terminal both mounted on the electric machine; a transmission-side opposed conductive member provided on the transmission terminal so as to be opposed to the conductive body; a transmission circuit provided on the transmission terminal for applying voltage between the transmission-side opposed conductive member and the conductive body, thereby changing electric field generated on the entire surface of the conductive body, said voltage being changed according to information to be transmitted; a reception-side opposed conductive member provided on the reception terminal so as to be opposed to the conductive body, thereby being capable of generating potential difference according to the electric field between the conductive body and the reception-side opposed conductive member; and a reception circuit provided on the reception terminal for receiving the information based on a change in the potential difference between the conductive body and the reception-side opposed conductive member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. A data communication method in which a transmission terminal and a reception terminal are provided at two different locations on an electric machine including an electrically conductive body insulated from the ground and having a surface, the method comprising transmitting information by generating an electric field covering the entire surface of the conductive body by the transmission terminal so that electric-field energy is concentrated near the surface of the conductive body and changing the electric field, and picking up the electric field by the reception terminal, receiving the information.
Specification