CAJ | 학술논문

采用微小时间间距测量芯片TDC-GP21设计实现了高精度激光脉冲测距系统。详细论述了TDC-GP21的工作流程与外围电路，研究了光信号接收与放大电路，并对跨阻放大器理论进行了详细的理论论述与分析。同时，讨论了三角波定比延时脉冲时刻鉴别法，降低了系统对激光器回波信号幅度变化的要求。经实验测试获得了厘米量级的激光脉冲测距系统。系统结构简单，可实现程度高，精度高，功耗低，体积小，可以满足高精度距离测量需求。
채용미소시간간거측량심편TDC-GP21설계실현료고정도격광맥충측거계통。상세논술료TDC-GP21적공작류정여외위전로，연구료광신호접수여방대전로，병대과조방대기이론진행료상세적이론논술여분석。동시，토론료삼각파정비연시맥충시각감별법，강저료계통대격광기회파신호폭도변화적요구。경실험측시획득료전미량급적격광맥충측거계통。계통결구간단，가실현정도고，정도고，공모저，체적소，가이만족고정도거리측량수구。
With advanced minute time interval measuremen t chip TDC-GP21 which is an application specific integrated circuit (ASIC), a high precision pulse laser ranging finder system was designed and achieved in this paper. Meanwhile, the workflow chart and external circuits were discussed. Optical signal receiving and amplifying circuit were also studied; the basic theory of transimpendance amplifier was also discussed and analyzed in detail. Further more, the method of triangle wave fixed propagation delay was put forward for time distinction which could greatly reduce the requirements of echo signal amplitude. That was pretty important to laser ranger finder. The results of the experiment prove that a centimeter accuracy system can be achieved with the above technology. At last, the pulse laser ranging system with small size which is easy to acquire has really simple structure and can achieve high degree accuracy which meets high precision laser distance measurement requirement with low power consumption and cost.