Method and apparatus for detecting position of mobile robot
First Claim
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1. A method for detecting a position of a mobile robot, comprising:
- receiving an infrared signal and a ultrasonic signal and calculating a time difference between the received infrared signal and the ultrasonic signal; and
detecting a position of a mobile robot on the basis of the calculated time difference and a distance value previously stored between ultrasonic wave generators generating the ultrasonic signals.
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Abstract
A method and apparatus for detecting a position of a mobile robot are disclosed to accurately and precisely detect a position of a mobile robot on the basis of a time difference between an infrared signal and a ultrasonic signal. The infrared signal and the ultrasonic signals are received, a time difference between the received infrared signal and the ultrasonic signals, and then, a position of a mobile robot is detected on the basis of the calculated time difference value and a distance value previously stored between ultrasonic wave generators generating the ultrasonic signals.
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Citations
26 Claims
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1. A method for detecting a position of a mobile robot, comprising:
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receiving an infrared signal and a ultrasonic signal and calculating a time difference between the received infrared signal and the ultrasonic signal; and
detecting a position of a mobile robot on the basis of the calculated time difference and a distance value previously stored between ultrasonic wave generators generating the ultrasonic signals. - View Dependent Claims (2, 3, 4, 5)
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6. A method for detecting a position of a mobile robot, comprising:
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transmitting an infrared signal generated from a fixed infrared generator and a ultrasonic signal generated from a fixed ultrasonic wave generator, to a mobile robot;
calculating a time difference between the transmitted infrared signal and the ultrasonic signal;
calculating each distance between the mobile robot and the ultrasonic wave generators on the basis of the calculated time difference value; and
detecting a position of the mobile robot on the basis of the calculated distance value and a distance value previously set between the ultrasonic wave generators. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method for detecting a position of a mobile robot in which a position of a mobile robot is detected by calculating a distance between the mobile robot and a charging device, comprising:
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receiving an infrared signal and a first ultrasonic signal simultaneously generated from an infrared generator and a first ultrasonic wave generator, respectively, installed at the charging device;
calculating a distance between the mobile robot and the first ultrasonic wave generator on the basis of the infrared signal and the first ultrasonic signal;
receiving a second ultrasonic wave generator installed at the charging device;
calculating a distance between the mobile robot and the second ultrasonic wave generator on the basis of the second ultrasonic signal; and
detecting a position of the mobile robot on the basis of a previously distance value between the first ultrasonic wave generator and the second ultrasonic wave generator, a distance value between the first ultrasonic wave generator and the mobile robot, and the distance value between the second ultrasonic wave generator and the mobile robot. - View Dependent Claims (13, 14, 15, 16)
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- 17. An apparatus for detecting a position of a mobile robot, wherein an infrared signal and a ultrasonic signal are received, a time difference between the received infrared signal and the ultrasonic signal, and a position of a mobile robot is detected on the basis of the calculated time difference value and a distance value between ultrasonic wave generators generating the ultrasonic signals.
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22. An apparatus for detecting a position of a mobile robot in which a position of a mobile robot is detected by calculating a distance between the mobile robot and a charging device, comprising:
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an infrared signal generator installed at the charging device and generating an infrared signal;
a first ultrasonic wave oscillator installed at the charging device and oscillating a first ultrasonic signal simultaneously together with the infrared signal;
a second ultrasonic wave oscillator installed at the charging device and oscillating a second ultrasonic signal after the first ultrasonic signal is generated; and
a position detector for calculating a time difference between the first and second ultrasonic signals on the basis of time when the infrared signal has been received, calculating a distance between the mobile robot and the first and second ultrasonic wave generators on the basis of the calculated time difference, and detecting a position of the mobile robot on the basis of the calculated distance value and a pre-set distance value between the first and second ultrasonic wave oscillators. - View Dependent Claims (23, 24, 25, 26)
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Specification