无线电源

The sub-node of wireless control is connected at a derailer at the side of the rail.

它是由一组传感器模块、无线传输模块、电源模块和工业控制计算机组成，无线传输模块包括无线收发汇聚节点、无线收发子节点和无线控制子节点，传感器模块连接无线收发子节点并通过传感器安装夹具安装在铁轨上，无线控制子节点连接设置在铁轨旁的脱轨器，无线收发汇聚节点连接工业控制计算机。

Then the types of upper sensors are determined. The CMOS chip AT89C2051 is used in this system because there is only a small quantity of program to be stored. This system uses wireless transmission module D21DL to form the network of wireless transmission. In this way, such disadvantages as low removability and expansibility and longtime construction are avoided. Digital filtering method is applied to improve anti-jamming performance.

由于程序存储量较少，现场的CPU选用ATMEL公司的低档型芯片AT89C2051；为了避免采用有线数据传输导致的系统可移动性差、系统扩充性能差和系统布置线缆繁琐、施工周期长等缺点，本系统采用了无线数据传输模块D21DL构成系统无线网络传输；同时设计了包括电源电路、显示电路、存储电路和报警电路等构成系统的所有电路。

The main products: Internet telephony, wireless access Desk, to wireless, public wireless, wireless internet, chargers, power adapters.

主要产品：网络电话、无线接入台、无线商话，无线公话，无线上网卡，充电器，电源适配器。

ATbstract: he small frequency modulated transmitter, the power is small, may launch the wireless signal, accepts the signal with the radio, satisfies certain transmission range, Circuit easy system, low cost, power output does not exceed 5-8 mW, firing range to be in the housing area of about 100 meters, with an ordinary FM radio receivers, demonstrating his superb sensitivity and clarity, the most circuit design challenges of the part is only used 3 V power supply, and half-wave antenna will be such a launch capability.simultaneously can input the sound signal, may install modulation surveillance table to serve as the monitoring device, although the power is not very big, but should the interference protection normal radiobroadcasting signal.

小型调频发射机，功率小，可以发射无线信号，用收音机接受信号，满足一定的发射距离。电路简单易制，造价低廉，输出功率不超过5－8mW，发射范围在房屋区可至100米左右，用一部普通的FM收音机接收，显示其灵敏度和清晰度俱佳，电路设计中最富挑战性的部份就是只需用3V电源和半波天线便有如此的发射能力。同时能够输入声音信号，可安装调制监视表头用作监视器，虽然功率不是很大，但是应该防止干扰正常的无线广播信号。

The traditional parallel theory without control interconnections has been adopted commonly in the parallel inverter system. There is a deviation between the steady output frequency and the instruction of this system controlled by the above scheme,and the heavier the load is, the droopier the frequency will be. When the error is out of the permitted range, the system can not be operated normally.

逆变电源无线并联系统常采用传统无线并联理论，即电压-频率下垂理论控制，采用此方案控制的并联系统，其稳态输出电压频率与指令值有偏差，且所带负载越重，稳态输出频率下降越多，当偏差超出允许范围时就会对所带负载造成影响，使其不能正常工作。

KTW33 mineral hypostases safety mobile phone, communication environment parameter, inquire about the equipment status, dangerous alarm, notice, assignment of task , KJF100 mineral product wireless collection machine, all kinds of sensor, firedamp, wind speed, carbon monoxide, on and off of equipment, electric break machine.

井下层： KTW30矿用无线中心控制器， KLF2矿用基站线路复用器， KYW32矿用无线基站， KDW63矿用基站控制器电源， KLT18矿用基站线路延伸器， KGE51定位卡，定时上报位置信息， KTW33矿用本安型手机，通话环境参数、设备状态查询、危险报警、通知公告、任务指派 KJF100矿用无线采集器，各类传感器：甲烷，风速，一氧化碳，设备开停，断电仪

For wireless telecommunication, mobile telecommunication, power supply resonator, wireless tone equipment, duplexer, filter, etc.

适用于无线通讯、移动通讯、电源振荡器、无线话音设备、双工器、滤波器的装配等。

The user-wearable electronic wireless transaction apparatus comprises a housing which houses a wireless communication device, one or more electronic circuits, a power source, a display device and a biometric data reading device.

该用户可佩戴的电子无线交易设备包括外壳，其容纳了无线通信装置、一个或多个电子电路、电源、显示装置和生物测量数据读取装置。

Traditional resource monitoring and discovery schemes for wired grids are not directly applicable to wireless grids due to the characteristics of them, such as frequent information update, short-lasting power source, and limited computing capacity.

由於无线环境的特殊性，例如：频繁的资讯更新、短时效的电源供应以及有限的计算能力等等，有线网格环境的资源监测及发现方法并不能直接适用於无线网格环境。

Oddly, no one seems to have noticed it at the time and it was first detected in 1947 as a radio source.

仙后座A首先在1947年被作为无线电源而探测到。奇怪的是，当时几乎没人注意到它。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。