Noncontact short distance communication system for sliding door
First Claim
1. A noncontacting short-range communication device for a slide door comprising:
- a rail provided in a vehicle body;
a slide part provided in a slide door sliding being guided by the rail;
a first antenna member attached to the rail in the longitudinal direction of the rail;
a second antenna member provided in the slide part so as to face to the first antenna member closely;
a first communication unit provided on the side of the vehicle body being connected to the first antenna member; and
a second communication unit having the same constitution as that of the first communication unit, the second communication unit being provided on the side of the slide door being connected to the second antenna member, wherein the first and second communication units transmit or receive data by electromagnetic induction coupling between the first and second antenna members, wherein each of the first and second communication units is supplied with electric power from a battery and includes a microcomputer and a data communication circuit controlled by the microcomputer, the data communication circuit performing semi-duplex bidirectional communication, wherein the data communication circuit includes;
a transmitting section, to which a clock pulse of the microcomputer is supplied, for transmitting a modulated wave obtained by on-off modulating the clock pulse as a base signal with the data having a serial communication form through the antenna member; and
a receiving section for receiving and demodulating the modulated wave through the antenna member so as to gain the data having a serial communication form.
1 Assignment
0 Petitions
Accused Products
Abstract
A noncontacting short-range communication device for a slide door for excellently performing bidirectional data communication by electromagnetic induction coupling between the side of a vehicle body and the side of the slide door is provided. Data are transmitted and received between the first communication unit 31 connected to the first antenna member 17 and the second communication unit 41 connected to the second antenna member 18 by the electromagnetic induction coupling of the first and second antenna members 17, 18. Each of the first and second communication units 31, 41 includes a microcomputer 34, 44 and a data communication circuit 33, 43 for performing semi-duplex bidirectional communication. Each of the data communication circuit 33, 43 includes: a transmitting section 33A, 43A, to which a clock pulse of the microcomputer 34, 44 is supplied, for transmitting a modulated wave obtained by on-off modulating the clock pulse as a base signal with the data having a serial communication form through the antenna member 17, 18; and a receiving section 33B, 43B for receiving and demodulating the modulated wave so as to gain the data.
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Citations
10 Claims
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1. A noncontacting short-range communication device for a slide door comprising:
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a rail provided in a vehicle body;
a slide part provided in a slide door sliding being guided by the rail;
a first antenna member attached to the rail in the longitudinal direction of the rail;
a second antenna member provided in the slide part so as to face to the first antenna member closely;
a first communication unit provided on the side of the vehicle body being connected to the first antenna member; and
a second communication unit having the same constitution as that of the first communication unit, the second communication unit being provided on the side of the slide door being connected to the second antenna member, wherein the first and second communication units transmit or receive data by electromagnetic induction coupling between the first and second antenna members, wherein each of the first and second communication units is supplied with electric power from a battery and includes a microcomputer and a data communication circuit controlled by the microcomputer, the data communication circuit performing semi-duplex bidirectional communication, wherein the data communication circuit includes;
a transmitting section, to which a clock pulse of the microcomputer is supplied, for transmitting a modulated wave obtained by on-off modulating the clock pulse as a base signal with the data having a serial communication form through the antenna member; and
a receiving section for receiving and demodulating the modulated wave through the antenna member so as to gain the data having a serial communication form. - View Dependent Claims (2, 3, 4, 5)
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6. A noncontacting short-range communication device for a slide door comprising:
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a rail provided in a vehicle body;
a slide part provided in a slide door sliding being guided by the rail;
a first antenna member attached to the rail in the longitudinal direction of the rail;
a second antenna member provided in the slide part so as to face to the first antenna member closely;
a first communication unit provided on the side of the vehicle body being connected to the first antenna member; and
a second communication unit having the same constitution as that of the first communication unit, the second communication unit being provided on the side of the slide door being connected to the second antenna member, wherein the first and second communication units transmit or receive data by electromagnetic induction coupling between the first and second antenna members, wherein each of the first and second communication units is supplied with electric power from a battery and includes a microcomputer and a data communication circuit controlled by the microcomputer, the data communication circuit performing semi-duplex bidirectional communication, wherein the data communication circuit includes;
a transmitting section, to which a clock pulse of the microcomputer is supplied, for transmitting a modulated wave obtained by on-off modulating the clock pulse as a base signal with the data having a serial communication form and a security ID code of the semi-duplex bidirectional communication through the antenna member; and
a receiving section for receiving and demodulating the modulated wave through the antenna member so as to gain the data having a serial communication form and the ID code, wherein the microcomputer includes;
storing means for storing the ID code in advance; and
collating means for collating the ID code stored in the storing means with the ID code gained by the receiving section. - View Dependent Claims (7, 8, 9, 10)
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Specification