Velocity-detecting device

• US 7,855,550 B2
• Filed: 07/23/2008
• Issued: 12/21/2010
• Est. Priority Date: 07/23/2008
• Status: Expired due to Fees

• Current Assignee: Yahorng Electronic Company Limited
• Original Assignee: Yahorng Electronic Company Limited
• Inventors: Huang, Jin Yi
• Primary Examiner(s): LeDynh; Bot L
• Application Number:
  US12/219,471
• Publication Number:
  US 20100019760A1
• Time in Patent Office: 881 Days
• Field of Search: 324/161, 324/176, 324/658, 324661-662, 324/686, 324/690
• US Class Current: 324/176
• CPC Class Codes: G01D 5/2405 by varying dielectric
• CPC Class Codes: G01P 3/66 using electric or magnetic means G01P3/80 takes precedence; measuring short time intervals G04F8/00, G04F10/00
• CPC Class Codes: G06F 3/017 Gesture based interaction, e.g. based on a set of recognized hand gestures interaction based on gestures traced on a digitiser G06F3/04883
• CPC Class Codes: G06F 3/0202 Constructional details or processes of manufacture of the input device
• CPC Class Codes: G10H 1/0551 using variable capacitors
• CPC Class Codes: G10H 1/344 Structural association with individual keys electrically operated wind-actuated organs G10B3/22
• CPC Class Codes: H03K 17/955 using a capacitive detector
• CPC Class Codes: H03K 17/9622 using a plurality of detectors, e.g. keyboard

Abstract

A velocity-detecting device is mainly based on detection of charge, including a circuit board provided thereon with at least two capacitance sensors with potential difference. The two capacitance sensors are provided at different locations for detecting the time difference when a living thing moves and has its charge respectively reaching the critical one preset by the two capacitance sensors for calculating the moving velocity of the living thing, able to detect and calculate the moving velocity of a living thing for carrying out relative reaction to a machine.

Claims

1. A velocity-detecting device comprising a circuit disposed thereon with at least two capacitance sensors with a potential difference, said two capacitance sensors provided at different locations for respectively detecting time difference when a living thing respectively reaches critical charge preset by said two capacitance sensors for calculating moving velocity of said living thing, relative reaction able to be performed to a machine according to calculated moving velocity of said living thing.

2. The velocity-detecting device as claimed in claim 1, wherein said two capacitance sensors are respectively provided on a topside and at an underside of said circuit board to form a potential difference between said two capacitance sensors.

3. The velocity-detecting device as claimed in claim 1, wherein said two capacitance sensors are respectively and separately disposed at a front end and a rear end on a topside of said circuit board to form a potential difference between said two capacitance sensors.

4. The velocity-detecting device as claimed in claim 2, wherein said circuit board is two closely superposed on each other and respectively connected with one of said capacitance sensors.

5. The velocity-detecting device as claimed in claim 2 or 3, wherein said circuit board is only one, and said two capacitance sensors jointly share said one circuit board for connecting a circuit.

6. The velocity-detecting device as claimed in claim 1, wherein said living thing can be a person'"'"'s finger.