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Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument. The instrument for radon measurement of air pulse ionization chamber, based on the theory that alpha rays decayed by radon and its progeny can ionize the air molecules, can measure the radon concentration accurately.

智能核仪器已成为放射性测量仪器发展的一个主导方向,利用氡及其子体衰变放出α射线能使空气分子电离的理论设计的空气脉冲电离室α测氡仪可以准确地测量空气中的氡浓度。

The principles and a description of the main parts of the new instruments are as follows :(1)By means of a fused quartz mirror system and mercury horizon(shown in fig.4),a telescope with a fixed glass grid,three photomultipliers with respective a.c.amplifiers and a time recorder,the astrolabe can determine the time of almu- cantar transit of a star ...

新仪器的特点如下:(1)借助熔石英角镜组和汞地平、一架望远镜和固定的玻璃记录栅、三个光电倍增管及其交流放大器和一架计时仪,此仪器能无人差地测定星过等高圈时刻。

A quantitative thermographic evaluation of the mouth was used to detect the first symptoms of the disease, which was proven to be highly effective identifying the onset of the development of a canker sore.

实验采用随机双盲,仪器使用定量热图仪检测溃疡的发生,该仪器能高敏感地探测到口腔溃疡的出现。

It also fits well with a system design where the instruments must be mounted on the telescope (e.g. mounting at the Cassegrain focus), or exposed to the external environment - since the instrument is static, it can be more easily enclosed.

它很好也符合在望远镜仪器的系统设计(即在卡塞格伦焦点的架置必须登上),或者暴露在外部环境-,因为仪器是静态的,它可以更加容易地被附寄。

They are separated, collected, processed, saved and the results are printed in continuous curve.

数控测井是充分利用计算机技术、电子技术,将井下测井仪器通过有线方式传输到地面的信号进行分离、采集、处理、存贮,以连续曲线或图形方式显示打印,并对井下仪器提供电源和实时控制。

Our company has established agencies in Beijing Guangzhou and Wuhan focusing on the distribution and sales of coating detecting instruments and experimental equipments from professional manufacturers in America Japan England and Germany including the Oven Temperature Track Color Difference Meter Thickness Gauge Glossmeter and other coating experimental and detecting instrumentsbesideswe also supply the market with series product of Scalar digital microscope.

武汉远京东和贸易有限公司(武汉康信科仪设备有限责任公司)致力于涂装检测仪器及实验设备的销售和服务,拥有多年的一线专业经历,细致的售前推介、丰富的实践经验和完渼迅捷的售后服务使我们颇获客户好评。公司目前在广州、北京、武汉等地设有服务机构,代理销售来自渼国、日本、英国和德国多家专业场商的涂装检测仪器和实验设备,包括色差仪、炉温跟踪仪、涂层测厚仪和光泽仪等涂装实验检测仪器和日本Scalar数码显微镜系列产品。

A typical example of a ground loop can be seen when a number of instruments are plugged into power strips on different instrument racks.

当几台仪器插到不同仪器机架上的电源板时产生的地电流就是一个例子。

Spectrophotometer 723 were introduced briefly in the paper.In order to apply it into measurement of pepsin thickness,we add temperature control system and pipe equipment into the instrument.And we redesigned the board of instrument and reedited the code.

文摘:简单介绍了723型可见分光光度计,在基本保持仪器原有机械结构的基础上,增加了温控系统和吸液装置,并对原仪器主板电路和程序进行了重新设计和编制,使它成功地应用在胃蛋白酶浓度的测量上。

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点:仪器对三相电压电流同时采样;基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效;可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相,得到准确的相位差和周期;基于实时参数自寻优的软件同步采样,有效地减小了周期截断误差,提高了测量准确度;数字化功率测量引入了传统的二表法和三表法,扩展了仪器的使用范围;实际容量根据负载损耗用软件查表的方法来判别;测量值已从试验温度折算到了参考温度(75℃)时的值。

By thorough analysis and synthetize this paper made a frame of the System of Intelligent Instrument and its hardware structure. As followed, this paper depicted design details of Intelligent Instrument "s hardware, it included the design of interface circuit, data commutations and digital logic of DSP, MCU, Internet"s chip and ISPs apparatus etc., and have designed schematic map and circuit. So it accomplished the full design of hardware/software of the New Type Intelligent Instrument.

本文具体给出了新型智能仪器硬件结构及实现,描述了智能仪器硬件设计细节,包括数字信号处理器、单片机、Internet接入芯片、可编程数字/模拟器件等在新型智能仪器中的接口电路设计、数据通信设计和数字逻辑设计等,详细地给出了设计原理图和电路图;给出了新型智能仪器的软件设计细节,从而完成了新型智能仪器完整的软硬件设计。

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