thus, it's hard to get the coordinate and shape information of targets . in this design, conventional quadrants sensors and cmos image sensors which are now developing very quickly are jointed together . a 256 photodiodes arrayed 4 quadrants sensors which uses active pixel sensor array is designed 在本研究中,將傳統(tǒng)的象限傳感器與當前迅速發(fā)展的cmos圖象傳感器相結(jié)合,提出了使用有源傳感陣列感光的256單元光電管陣列四象限cmos光電傳感器。
the active pixel sensor structure widely used in image sensor is used here to convert the micro photoelectric signal generated in pixel to large electric signal to facilitate the signal processing and reduce the noise . the arrayed sensor structure ? s used to obtain the coordinate and shape information of targets 該傳感器的感光單元采用了cmos圖象傳感器中使用的有源像素傳感器(activepixelsensor,aps)設(shè)計,在感光單元內(nèi)部由光電信號預處理電路直接將傳感產(chǎn)生的光電信號轉(zhuǎn)化為幅度較大的電信號輸出,避免了對微弱信號的處理,降低了噪聲的影響。