A Range Finder System with Electronically Maskable Photo Detecting Device Array

2003 ◽  
Vol 15 (3) ◽  
pp. 322-330 ◽  
Author(s):  
Jun Masaki ◽  
◽  
Nobuhiro Okada ◽  
Eiji Kondo
Keyword(s):  
Projection Method ◽  
Image Plane ◽  
Experimental Results ◽  
Diode Array ◽  
Range Image ◽  
Range Finder ◽  
Range Images ◽  
Cost Performance ◽  
Photo Diode ◽  
Ray Projection

A range finder realizable with an easy circuit composition is proposed. The range finder is based on the slit-ray projection method. In the system, positions of slit-ray images on an image plane are detected by using pattern masks electronically provided to the image plane. Due to using the electronic pattern masks, the range finder realizes high cost performance, highspeed measurement and small size. In order to estimate measurement speed, a prototype circuit has been developed. The experimental results obtained by the circuit have indicated that the range finder will be able to take a range image of which resolution is 64 × 64 and more in 1/30[s] or less in the future. A prototype range finder which has a 32 × 32 photo diode array and a laser slit marker has been also developed, and range images have been actually taken using it. In this paper, with emphasis on indicating the availability of the proposed method, the range finder system and experimental results by the prototype circuit and the prototype range finder will be shown.

Input of Japanese Characters by Recognizing the Number of Fingers

2004 ◽  
Vol 16 (4) ◽  
pp. 420-425
Author(s):  
Takashi Yamagishi ◽  
◽  
Kazunori Umeda ◽  
Keyword(s):  
Image Processing ◽  
Input Data ◽  
Image Sensor ◽  
Experimental Results ◽  
Range Image ◽  
Range Images ◽  
Image Information ◽  
Human Gestures

Many recent studies centered on recognizing human gestures using images for man-machine interfaces do not deal with information on Japanese or other characters. We propose inputting Japanese characters by recognizing the number of fingers of one hand. Recognized numbers are converted to characters using the “pocket-bell” rule. The number is recognized by image processing. Range images are used as image information to implement the method. We also discuss how to control recognition timing and canceling input data. Experimental results using a range image sensor show the effectiveness of the proposed methods.

scholarly journals Screening for Pesticides in Serum from Acutely Poisoned Patients by HPLC-Photo-Diode Array Detection.

Eisei kagaku ◽  
1998 ◽  
Vol 44 (3) ◽  
pp. 182-194 ◽  
Author(s):  
Hiromi MORI ◽  
Takahiko SATO ◽  
Hisamitsu NAGASE ◽  
Kumi TAKADA ◽  
Futoshi YAMAZAKI
Keyword(s):  
Diode Array ◽  
Diode Array Detection ◽  
Photo Diode ◽  
Array Detection

Design of Photo Diode Sensors for Measuring Solar Light Orientation

2013 ◽  
Vol 479-480 ◽  
pp. 724-728
Author(s):  
Yong Nong Chang ◽  
Hung Liang Cheng ◽  
Shun Yu Chan ◽  
Yu Siang Shen
Keyword(s):  
Solar Power ◽  
Experimental Results ◽  
Solar Light ◽  
Light Detector ◽  
Photo Diode ◽  
Cubic Structure

In this paper, the photo diode sensors are used to realize the solar light detector for measuring the relative solar orientations. The proposed solar light detector comprises five photo diode sensors which are positioned on the front, back, left, right, and upper sides, respectively, on a cubic structure and cubic light-measuring detector is constructed. Accordingly, the photo sensors located on five facets can detect solar light from various directions and measure the incident solar power. Therefore, the relative solar azimuth and elevation angles can be measured precisely. The experimental results have confirmed the validity of the developed system.

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