Urquizar C, Pélisson D
Vision et Motricité, INSERM U94, Bron, France.
J Neurosci Methods. 1992 Jun;43(1):77-82. doi: 10.1016/0165-0270(92)90069-p.
A new non-contact, real-time, 2-dimensional recording technique is described. This technique used in a cat training procedure, permits on-line monitoring of the position of a hand-held food target displaced at variable speeds, directions and amplitudes in front of the animal. Due to the optical constraints imposed by this training procedure, 2 orthogonally located 1-dimensional position-sensitive detectors (PSDs) are used in the near infrared bandwidth in association with a pair of pulsing infrared emitting diodes (IREDs) orthogonally mounted on the monitored object. This geometrical configuration and the wide infrared emission angle insure the visibility of each IRED from its associated PSD, whatever the position of the IRED pair in the working area. A computer program controls the sequence of both IREDs pulses and sampling of the corresponding PSDs outputs and provides the x and y coordinates of the IREDs pair at a 80-Hz rate. This non-contact linear technique can be duplicated at a very low cost for use in a variety of contexts, even under extreme luminance conditions.
本文描述了一种新的非接触式实时二维记录技术。该技术应用于猫的训练过程中，能够在线监测在动物前方以可变速度、方向和幅度移动的手持食物目标的位置。由于此训练过程所施加的光学限制，在近红外带宽内使用了两个正交放置的一维位置敏感探测器（PSD），并与一对正交安装在被监测物体上的脉冲红外发光二极管（IRED）配合使用。这种几何配置以及宽红外发射角度确保了无论IRED对在工作区域中的位置如何，每个IRED都能被其相关的PSD看到。一个计算机程序控制IRED脉冲的序列以及相应PSD输出的采样，并以80赫兹的速率提供IRED对的x和y坐标。这种非接触线性技术可以以非常低的成本复制，用于各种环境，即使在极端亮度条件下。
