基于GP21的高精度测时电路设计
关键词 高精度 时间测量 GP21 电路
毕业论文设计说明书外文摘要
Title Design of high precision time measurement circuit based on GP21
Abstract
This paper simply describes the methods of time and time measurement in the course of social development. The principles of direct counting method, simulation interpolation method and delay line interpolation method are introduced. At the same time, the application of high precision time measurement in practice is briefly described. The design uses the TDC-GP21 chip for high-precision time measurement. The circuit design starts from the circuit diagram，first, the power supply of the 5V and 3V power supply is designed. Secondly, using LPC2141 chip to drive the GP21 by the designed SPI chip. LPC2141 chip are connected in parallel and serial mode with LCD display and computer. In addition, the circuit also includes decoupling capacitors, crystal oscillators, reset circuit, and serial to USB part etc. After the circuit schematic diagram is designed by Protel software, the PCB circuit board is produced according to the schematic diagram. Finally, the program is written according to the circuit wire.
Keywords High-precision Time measurement GP21 Circuit
目录
1 绪论 1
1.1 高精度时间测量的重要性 1
1.2 时间测量的发展 1
2 时间测量的方法与研究现状 3
2.1 时间测量的方法 3
2.1.1 直接计数法 3
2.1.2 模拟内插法 3
2.1.3 延时线内插法 4
2.2 时间测量相关研究与应用现状 4
2.2.1 多通道时间间隔测量 4
2.2.2 激光雷达技术 5
2.2.3 基于GP2的时间间隔测量 6
3 基于TDC-GP21的高精度时间间隔测量的电路设计 8
3.1 激光测距原理及应用 8
3.1.1 激光测距的原理 8
3.1.2 激光测距的应用 8
3.2 TDC-GP21功能简介 9
3.3 LPC214X功能简介 12
3.4 测量电路设计 14
3.4.1 硬件电路设计 14
3.4.2 程序设计 20
4 总结与展望 24
4.1 总结 24
4.2 展望 24
结 论 25
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