测距仪

This paper studies a microprocessorbased SCM ultrasonic range finder.

本文主要研究了一种基于单片机微处理器的超声波测距仪。

SCM range finder for the core elements for launching the circuitcontrol and receive data processing.

单片机为该测距仪的核心单元，实现发射电路的控制和接收数据的处理。

Study on pulsed laser range finder based on digital polarity .

雪崩光电二极管在相位式激光测距仪中的应用。

Ultrasonic range finder is used to measure car in a closed space, the specific coordinates.

超声波测距仪用来测量小车在封闭的场地里的具体坐标。

The paper introduces the model and system error of SmartROB-2 mobile robots odometer and laser range finder firstly.

本文首先对SmartROB-2移动机器人所装配的里程计传感器和激光测距仪传感器的模型和误差分别进行了分析讨论。

The circuit has been used for high-precision long-range LD laser pulse range finder.

该电路已用于远距离、高精度LD激光脉冲测距仪中。

In this paper, ultrasonic transmission distance and of time, using AT89S52 micro controller and data processing, designed to accurately measure the distance between two ultrasonic range finder.

详细说明：本文利用超声波传输中距离和时间的关系，采用AT89S52单片机进行控制及数据处理，设计出了能精确测量两点间距离的超声波测距仪。

The mid-20th century, 60 years, miniaturization of electronic products and small light-emitting diode developed for the design of the second generation range finder provides the conditions.

20世纪60年代中期，电子产品的小型化和小型发光二极管的研制成功，为第二代测距仪的设计提供了条件。

The design consideration and development of the measurement system is described, including the selection of laser displacement meter, realization of rotational andlinear motion, and techniques for data acquisition and computer control.

本文详细介绍该系统的设计思想及实现方法，包括激光测距仪的选择、转动与直线运动的实现、数据采集与计算机自动控制技术等。

Via counting the input counter spot frequency clock pulse in the ultrasonic round-trip time,the measurement dis-tance is displayed.The algorithm is novel.

该数字式超声波测距仪对超声波从发射到返回的时间内输入到计数器特定频率的时钟脉冲进行计数，进而显示对应的测量距离。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。