An ultrasonic 3D image sensor employing PN code
An ultrasonic 3D image sensor employing PN code
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采用 PN 码的超声波 3D 图像传感器
DOI：
10.1109/icsens.2007.355470
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
K. Taniguchi
中科院分区：
文献类型：
--
作者：
Hongbo Zhu;H. Inubushi;N. Takahashi;K. Taniguchi
我们研制了一种新型的三维图像传感器，它由一块FPGA板、一个超声波发射机、一个阵列接收器和一个AD转换器组成。图像传感器发射41.7 kHz的伪噪声码调制的超声波，然后由160个接收器组成的阵列传感器采集物体反射回来的信号。我们对接收到的信号进行下变频和波束形成，然后计算与原始PN码的相关性，以构建3D图像。检测到放置在不同位置的直径为5.5 cm的塑料球。
We developed a new 3D image sensor consisting of an FPGA board, an ultrasonic transmitter, an array receiver and an AD converter. The image sensor transmits 41.7 kHz ultrasonic wave modulated with a PN (pseudo noise) code and then the array sensor composed of 160 receivers collects the signals reflected back from objects. We perform down conversion and beamforming of the received signals and then calculate the correlations with the original PN code to construct a 3D image. Plastic balls with a diameter of 5.5 cm that placed in different positions were detected.