基于嵌入式技术的激光物体探测器的设计

Design of laser detector based on embedded technology

为了实现目标物体的准确探测,进行物体探测器的优化设计,提出一种基于嵌入式技术和激光探测的物体主动探测器设计方法。首先根据空气中激光波束的反射特性,精确计算目标壳体与空气界面的反射场,并将激光发射器等效为磁偶极子,建立激光物体探测的数学模型。采用十字形配置方式进行激光探头设计,消除直接磁耦合,避免在作用距离内出现死区。然后采用嵌入式设计方法进行探测器的硬件设计,采用TDA8920BTH为核心芯片设计发射模块和接收模块,基于ADSP-BF561进行激光物体探测器的嵌入式数字模块设计。最后进行探测器的系统测试分析,结果表明,该探测器进行物体探测的准确性较好,抗干扰能力较强。

In order to achieve accurate detection of target object and optimize object detector, put forward a kind of active laser detection method based on embedded technology and laser detection. Firstly, according to the reflection characteristics of laser beam in the air, the reflected field of target shell and air interface is accurately calculated, the laser transmitter is equivalent to a magnetic dipole, and the digital model of laser detector is established. Eliminating teh direct magnetic coupling by designing the laser probe based on cruciform configuration to avoid dead zone in effec- tive range. Then, the hardware design adopts embedded design method for the detector, using TDA8920BTH as the core chip to design transmitter module and receiver module, design the embedded digital model of laser detector based on ADSP-BF561. The system test results show that the detector has good detection accuracy and its anti-interference ability is strong.