三线

This equipment in view of the big user three-phase three-wire system electrical energy measurement way, the use electronic technology, the mechanics of communication and the computer technology, against stole the electricity to the microcomputer the installment to conduct the response research, used its data processing function in the hardware and the software two aspects, could realize to many kinds of steals the electricity method the examination, and through the generalized analysis made whether to steal the electricity the judgment, when the discovery stole the electricity behavior might carry on the warning and the record, simultaneously and shut off the power supply, in order to avoid a bigger loss, had the high sensitivity and the use value.

该装置针对大用户三相三线制电能计量方式，利用电子技术、通讯技术和计算机技术，对微机防窃电的装置进行了响应的研究，在硬件和软件两方面利用其数据处理功能，能实现对多种窃电手段的检测，并通过综合分析作出是否窃电的判断，在发现窃电行为时可进行报警和记录，并同时切断供电，以免更大损失，具有较高的灵敏度和实用价值。

This thesis presents a single-phase three-wire photovoltaic energy conversion system. When the proposed system is operating at the maximum power point, the energy is fed to the utility with sinusoidal wave. In low insolation environment, the proposed system operates at the function of active power filter and battery charger. When the utility is fault, the system is disconnected from the utility source.

本文提出一个单相三线式光伏能量转换器系统，使太阳能光伏能量转换器运转於最大功率，将能量以弦波电流送入市电，在无光源时，为主动式电源滤波器的功能，此时可经由市电提供能量对蓄电池充电；当故障时，系统必须与市电解联。

This series of instruments for low-voltage, medium voltage, high-voltage switchgear and distribution systems, central station monitoring system, generator set systems, building automation systems, energy management system, such as factories, able to measure three-phase three-wire, three-phase four-wire system current, voltage, active power, reactive power, apparent power, active power, reactive power, power factor, frequency, voltage triangular openings, the largest open-shaped voltage power parameters, at the same time with a remote, remote control function.

该系列 仪表适用于低压、中压、高压开关和配电系统、中心电站监测系统、发电机组系统、楼宇自控系统、工厂能量管理系统等，能够测三相三线，三相四线系统的电流、电压、有功功率、无功功率、视在功率、有功电能、无功电能、功率因数、频率、开口三角形电压、最大开口形电压等电力参数，同时带有遥信、遥控功能。

This digital thermometer design uses the American DALLAS Semiconductor Company after DS1820 promotes one kind of advanced version intelligence temperature sensor DS18B20 takes the detecting element, the temperature measurement scope may amount to 0.0625 degree Celsius for the - 55--125 degree Celsius biggest resolution, may the direct readout measure the temperature to plant, moreover used the three-wire system and the monolithic integrated circuit is connected, reduced the exterior hardware circuit, has at the same time the characteristic which the low cost and easy to use it to have the microminiaturization, the low power loss, the high performance, the anti-jamming ability strong, easy to match merits and so on microprocessor, the especially qualify in constituted the multi-spot temperature observation system, might directly the temperature inversion serial digital signal for microcomputer processing, moreover each piece of DS1820 had onlyThe product number and may store in its ROM, in order to constitution large-scale temperature observation system time hangs on the single track meets willfully many DS1820 chips.

本数字温度计设计采用美国DALLAS半导体公司继DS1820之后推出的一种改进型智能温度传感器DS18B20作为检测元件，测温范围为-55——125摄氏度最大分辨率可达0.0625摄氏度，可以直接读出被测温度植，而且采用三线制与单片机相连，减少了外部的硬件电路，具有低成本和易使用的特点同时它具有微型化、低功耗、高性能、抗干拢能力强、易配微处理器等优点，特别适合于构成多点温度测控系统，可直接将温度转化成串行数字信号供微机处理，而且每片DS1820都有唯一的产品号并可存入其ROM中，以便在构成大型温度测控系统时在单线上挂接任意多个DS1820芯片。

12VDC power supply, three-wire system

12VDC 供电，三线制电路

It is both simple and easy the new method of the measuring power on symmetric three-phase three-wire circuit,and has practical significance.

这给对称三相三线制电路的功率测量提供了既简单又易操作的新方法，具有的实用意义。

The above methods can be applied to unbalanced three-wire circuits but can not be used in four-wire circuits.

上述方法还可用于三线制不对称电路，但不能用于四线制电路。

All three models employ linearization, three-wire compensation, as well as provide complete three-way signal isolation.

这三种型号采用线性化，三线补偿，以及提供完整的三路信号隔离。

Results of Proteus software simulation showed a kind of three-wire interface communication can be simply realized in real-time clock system.

Proteus软件仿真结果验证了在实时时钟系统中可以很容易实现三线接口的串行通信。

The device's serial interface can be configured for three-wire operation and is compatible with microcontrollers and digital signal-processors.

这种装置的串联接口可能被设定为三线操作是为了与微型控制器和数字式信号处理器兼容。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。