Title:
OBSTACLE DETECTING DEVICE USING A PRESCALER AND OBSTACLE DETECTING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2012/050337
Kind Code:
A2
Abstract:
The present invention relates to an obstacle detecting device using a prescaler and a detecting method. The obstacle detecting device of the present invention includes: a sensor strip having a varying capacitance value according to the proximity of an obstacle; an RF oscillator connected to the sensor strip; a prescaler for dividing an oscillation frequency of the RF oscillator by a set ratio; and a Micro Controller Unit (MCU) for controlling the operation of the RF oscillator and receiving a divided signal from the prescaler. Since an obstacle detecting device according to the present invention does not include a local oscillator, a mixer, a PLL, and a loop filter, its configuration is simple, product price is lowered, and malfunction possibility is drastically reduced. Moreover, since the proximity of an object is determined by calculating a reference frequency in each set period while an RF oscillator operates, the RF oscillator does not need to be tuned, thereby drastically increasing product productivity.
Inventors:
CHO SEUNG-WON (KR)
JEONG KWANG-SEOK (KR)
JEONG KWANG-SEOK (KR)
Application Number:
PCT/KR2011/007512
Publication Date:
April 19, 2012
Filing Date:
October 11, 2011
Export Citation:
Assignee:
PULSETECH CO LTD (KR)
CHO SEUNG-WON (KR)
JEONG KWANG-SEOK (KR)
CHO SEUNG-WON (KR)
JEONG KWANG-SEOK (KR)
International Classes:
G01B7/14; G01R27/26
Foreign References:
| KR20100013386A | 2010-02-10 | |||
| JPH11109034A | 1999-04-23 | |||
| KR20090065028A | 2009-06-22 | |||
| US5325063A | 1994-06-28 | |||
| KR970028507A |
Attorney, Agent or Firm:
JEONG, Choong-Kon (KR)
정충곤 (KR)
정충곤 (KR)
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Claims: