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 Sensor Applications
센서 자료실
작성자 leeky        
작성일 2006/04/06
첨부#2 sensor_capaciflector_sch.gif (0KB) (Down:31)
Link#1 sensors_field.html (Down:41)
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  Rich Caudle's capaciflector

Rich Caudle's capaciflector

There's more info on the capaciflector here,
http://www.hamiltonjones.com/casi/applica2.htm
and a brief abstract on it here.
http://www.stanford.edu/~nsmaby/abstract.htm

A unique capacitive proximity sensor was investigated
for use on a robotic arm aid for quadriplegic individuals.
This sensor was investigated for use as a part of a safety system
(specifically to avoid robot collisions with the human user)
and as a part of the environmental exploration system
(to detect changes in the environment as compared with a known model).

The sensor, termed the "capaciflector" by its developer John Vranish
at Goddard Space Science Center,
uses an actively driven shield to extend its proximity sensing range over
that of comparable unshielded capacitive proximity sensors.

My research focused on characterization of this sensor.
This included verifying the functional relationship between the sensor output
and the proximity of an object and determining geometric, object material ,
and environmental noise effects on the sensor performance.

The capacitance change in the sensor can be approximated
as being proportional to the inverse of the distance to an object.
The maximum distance of detection was roughly twice the diameter
of the sensor plate. However,
many factors affected these general characterizations of the response
and are listed below (these will be discussed in my presentation):

The conclusions which can be drawn from this research project are:

The capaciflector can be used effectively
for object avoidance / safety applications
due to its increased resolution at closer ranges. However,
it may come uncomfortably close to the user due
to its relatively limited detection range.

Unless the material and geometric properties of the sensed object are known,
this capaciflector can not be used as a general purpose proximity ranging sensor.
In order to take advantage of the extended proximity detection,
compensation for temperature and humidity effects are needed.

For the relatively static environment of the ProVAR work station,
it may be possible to get object location and orientation information
by exploration with the capaciflector.

 
AVRTOOLS™
   
윗글 Analog Opto Isolator
아래글 Geiger Tube
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74 AT89C2051과 EM4095를 사용한 RFID 장치의 제작 leeky 2006/12/31 (일) 1214 0
73 UserPort for Windows 2000 leeky 2007/11/12 (월) 841 0
72 아날로그 PID 제어 회로 leeky 2007/11/12 (월) 1425 0
71 Windows Scope 2K4 leeky 2007/11/12 (월) 972 0
70 12C508 금속검출기 leeky 2006/02/24 (금) 1137 0
69 16C84 LCD표시 L,C 메터 leeky 2006/02/25 (토) 1181 2
68 89C2051 LCD표시 LC메터의 제작 leeky 2006/02/14 (화) 1194 8
67 12C508A 초음파 거리 측정기 avrtools 2006/02/23 (목) 1074 0
66 Caliper to computer (RS-232) interface leeky 2006/02/23 (목) 1106 4
65 가속도센서 ADXL202의 PIC12C508 인터페이스 leeky 2006/02/20 (월) 1066 2
64 16F84 광학식 심박측정기 leeky 2006/02/27 (월) 1145 6
63 12C508 전자 나침판 leeky 2006/02/27 (월) 741 0
62 ENC28J60 Ethernet to SPI Header Board leeky 2007/03/26 (월) 1010 0
61 SHT11 습도센서 8051 인터페이스 leeky 2006/02/14 (화) 1061 0
60 SHT11 습도센서 SX18 인터페이스 leeky 2006/03/16 (목) 704 2
59 SRF04 초음파 거리센서의 제작 leeky 2006/02/25 (토) 733 0
58 Ambient Light Sensors TSL2550 avrtools 2006/04/06 (목) 567 0
57 PIC16F877A BioSense Physiologic Sensing leeky 2006/04/06 (목) 632 0
56 Electrocardiogram (ECG) Front End leeky 2006/04/06 (목) 702 0
55 Biometric Interface Board leeky 2006/04/06 (목) 821 0
54 MAX2242 802.11b 블루투스 RF증폭기 leeky 2006/04/06 (목) 516 0
53 AX.25 9600BPS 무선모뎀 L2PCX leeky 2006/04/06 (목) 408 0
52 TCS230 색상검출 평가키트 leeky 2006/04/06 (목) 1688 0
51 100V10A 50W 전자부하 leeky 2006/04/06 (목) 601 0
50 FLAME SENSOR UVTRON R2868 leeky 2006/04/06 (목) 587 0
49 Compact Optical Image Scanner leeky 2006/04/06 (목) 525 0
48 지자기 방위계 모듈 CMPS03 leeky 2006/04/06 (목) 675 0
47 0~1.5KV 정전기 측정센서 PKE05A1 leeky 2006/04/06 (목) 365 0
46 Rain Sensor 인터페이스 회로 leeky 2006/04/06 (목) 593 0
45 초음파 감지 센서 leeky 2006/04/06 (목) 597 0
44 HUMIDITY SENSOR HS-1100 leeky 2006/04/06 (목) 463 0
43 Relative Humidity Sensor KSH01, KSH-02 leeky 2006/04/06 (목) 353 0
42 Digital Radar Speedometer leeky 2006/04/06 (목) 522 0
41 Touch Sensitive Switch leeky 2006/04/06 (목) 566 0
40 Economy radar detector leeky 2006/04/06 (목) 400 0
39 Twin Loop metal detector leeky 2006/04/06 (목) 532 0
38 Proximity Detector CS209A/D leeky 2006/04/06 (목) 521 0
37 Lego Sound Sensor leeky 2006/04/06 (목) 471 0
36 12C508 IR Proximity Detector leeky 2006/04/06 (목) 682 0
35 Sharp IR Sensor Hack leeky 2006/04/06 (목) 658 0
34 TIL300 PRECISION LINEAR OPTOCOUPLER leeky 2006/04/06 (목) 414 0
33 Analog Opto Isolator leeky 2006/04/06 (목) 460 0
32 Rich Caudle's capaciflector leeky 2006/04/06 (목) 302 0
31 Geiger Tube leeky 2006/04/06 (목) 411 0
30 Lynxmotion Infrared Proximity Detector leeky 2006/04/06 (목) 388 0
29 Low Power LED Flasher leeky 2006/04/06 (목) 466 0
28 백색 LED BLU 구동회로 leeky 2006/04/06 (목) 498 0
27 저전압 백색 LED 구동회로 leeky 2006/04/06 (목) 535 0
26 IR LED 송신회로 avrtools 2006/04/06 (목) 529 0
25 LED 총방사 광량의 측정 leeky 2006/04/06 (목) 430 0
24 자외선 측정센서의 교정 leeky 2006/04/06 (목) 383 0
23 UV센서 S9050의 데이터 leeky 2006/04/06 (목) 297 0
22 디지털 자외선 메터 leeky 2006/04/06 (목) 346 0
21 Simple Metal Detector leeky 2006/04/06 (목) 538 0
20 DS1820 온도센서 읽기 leeky 2006/04/04 (화) 598 0
19 RC5 적외선 리모콘의 신호처리 leeky 2006/02/17 (금) 688 0
18 NEC 적외선 리모콘의 전송규격 leeky 2006/02/17 (금) 590 0
17 MBI-6001 TRANSLESS LED DRIVER leeky 2006/02/14 (화) 413 0
16 PC로 제어하는 AD9850 DDS 신호발생기 leeky 2006/02/14 (화) 457 0
15 2400 Mhz test oscillator leeky 2006/02/14 (화) 479 0
14 DC BRUSHLESS FANS leeky 2006/02/14 (화) 565 0
13 RF mW Meter for SHF (2300MHz) leeky 2006/02/14 (화) 394 0
12 FET로 만드는 400W SSR leeky 2006/02/14 (화) 628 0
11 Scope2k4 소프트웨어 및 하드웨어 회로 leeky 2006/02/14 (화) 746 0
10 LTC1298를 사용한 PC 병렬포트용 ADC leeky 2006/02/14 (화) 414 0
9 0~14V 가변정전압, 0~2A 가변정전류 전원 avrtools 2006/02/14 (화) 540 0
8 ATV 1240-1300MHz 튜너용 PLL leeky 2006/02/14 (화) 293 0
7 1 Transistor FM Microphone leeky 2006/02/14 (화) 349 0
6 Helical Antenna Design Software leeky 2006/02/13 (월) 451 0
5 IRF510을 사용한 7MHz 출력10W 증폭기, PLL leeky 2006/02/13 (월) 516 0
4 MC34063A 설계용 계산기 avrtools 2006/02/13 (월) 487 0
3 RS232 신호 변환회로 leeky 2006/02/13 (월) 636 0
2 Sound card based multimeter Scope leeky 2006/02/13 (월) 770 0
1 2400MHz Helical Antenna Design leeky 2006/02/08 (수) 414 0
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