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4z9810091134 2009-10-25 14:54:56 527 浏览

9.3Anti-collisionsystemsSomeanti-collisionsystemsworkusingtheprinciplesof:–sonar;–radar;–lowfrequencynear-fieldinduction.MiscellaneousSonarAlthoughtheprincipleisverygo... 9.3 Anti-collision systems Some anti-collision systems work using the principles of: – sonar; – radar; – low frequency near-field induction. Miscellaneous Sonar Although the principle is very good， there is the danger with this system that a strong wind can blow the sonar waves away. Radar Radar usually uses advanced microwave or Doppler radar technology combined with some digital signal processing. Safety circuits are builtin， and the system can sense objects up to a distance of about 40 m. The maximum crane travel speed is about 200 mmin. The radar beam which is sent out will be reflected by solid objects and will be received by the same radar antenna. It can measure the distance between two objects and also the speed with which the object is approaching the sensed object. Low-frequency near-field induction system These low frequency systems work at a frequency of approximately 90 to 220 kHz and have a working maximum range of about 30 m. A transmitter and antenna is installed on the first crane and a receiver and antenna on the adjacent crane. With this system it is possible to install three distance steps between the cranes， which should be respected. For example: – at 30 m distance an audible signal is given; – at 20 m distance the crane speed is decreased; – at 5 m distance the final stop signal is given. 不要机器翻译，通顺流畅点展开

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路斩203 2009-10-28 00:00:00

纯手工翻译，楼主明鉴。 9.3 Anti-collision systems Some anti-collision systems work using the principles of: – sonar; – radar; – low frequency near-field induction. Miscellaneous 防碰撞系统一些防碰撞系统采用了下列原理：－声纳系统; －雷达系统; －低频近场感应系统。－其他系统 Sonar Although the principle is very good， there is the danger with this system that a strong wind can blow the sonar waves away. 声纳系统尽管声纳系统工作原理很不错，但系统的危险性在于强风可能将声纳波吹开。 Radar Radar usually uses advanced microwave or Doppler radar technology combined with some digital signal processing. Safety circuits are builtin， and the system can sense objects up to a distance of about 40 m. The maximum crane travel speed is about 200 m min. The radar beam which is sent out will be reflected by solid objects and will be received by the same radar antenna. It can measure the distance between two objects and also the speed with which the object is approaching the sensed object. 雷达系统雷达系统通常将先进的微波或多普勒雷达技术和一些数字信号处理系统相结合。安全回路内置。该系统可以检测40米左右距离的对象。起重机的Z大行驶速度为200米/分钟。发射出去的雷达波束被固体折射，并且被同一雷达天线接收。雷达系统可以测定两个物体之间的距离，也可以测定一个物体接近另外一个物体的速度。 Low-frequency near-field induction system These low frequency systems work at a frequency of approximately 90 to 220 kHz and have a working maximum range of about 30 m. A transmitter and antenna is installed on the first crane and a receiver and antenna on the adjacent crane. With this system it is possible to install three distance steps between the cranes， which should be respected. For example: – at 30 m distance an audible signal is given; – at 20 m distance the crane speed is decreased; – at 5 m distance the final stop signal is given. 低频近场感应系统这种低频率系统的工作频率约为90－220千赫，Z大有效工作范围约30米。diyi台起重机上安装一套发射器和天线，邻近的起重机上再安装一套接收器和天线。通过这个系统，在两个起重机之间可以实施三步法，这种做法是被公认的。例如： –在30米处发出可听信号; –在20米处起重机减速; –在Z后5米处发出停车信号。

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lilyzhang56789 2009-10-27 00:00:00

些反冲突系统引起使用的原则的9.3反冲突系统 :?C声纳;?C雷达;?C低频近-田野就职.虽然原则是很好，各种各样声纳那里是声纳挥手让随着这一强风能吹动的系统危险走开的.雷达雷达通常使用把先进微波或者多普勒雷达技术与一些数字的信号处理结合起来 .安全环路是固定建筑物的用具，和系统能感觉到不赞成大约40米距离上到一.Z大吊车旅行速度存在大约200米分钟被发出的雷达梁将被坚实的物件反射和将被同样的雷达触角收到.它能有随着物件正处理感觉到物件的两物件和也速度之间的距离长.低频-靠近-田野就职系统这些低频系统在大约90比220的一频率方面加工kHz和有a加工大约30 米的Z大范围.一发射机和触角存在把安装在在邻近的吊车上diyi吊车和一收件人和触角.随着这可能安装步三吊车之间的距离系统它存在，哪一个将去被尊重.例如 :?C在30米距离方面一听得见的信号得到;?C阿特20米跑在吊车速度存在decreased前面;?C在5米距离方面Z后停止信号得到.

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琪垚 2009-10-27 00:00:00

目前，Festoon 9.5系统数据的供应手推车当前，固定的部分数据提供起重机和旅行的手推车通常是由一个festoon系统。在一个用机器起重机购物车festoon系统包括一个攻击的相当大的供电电缆。起重机满的绳子手推车，甚至有可能在2或3细线。这个号码的这些电缆已大幅降低了在过去的几年中，通过使用 fibreoptic连接，它现在常用。电缆这个festoon系统安装在有线电视运营商，可以管状或扁平电缆。在快速移动的机械手推车、使用2或3 festoon机动车辆的移动运营商是必要的大束或重festoon电缆更顺畅。另外，供电铁轨可以使用。当这些是正常的copperhead式，双吗当前收藏家所需要的。这个穿这样的系统amperages时可以相当高必须被转移和吊车或手推车正在高速发展。这个数据提供可以进行微波数据通过引导通信系统。 Unipole绝缘导体铁轨还可以用于运输主要对起重机的或机械的手推车。这些导体轨道可以有铜横截面积500平方毫米和可能一个连续的Ampe正在容量大约为1000安培。这个要求应仔细计算的能力，以及电压滴在距离的地方的系统起重机和小车的长度。

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ytd8556446 2009-10-27 00:00:00

9.3防碰撞系统一些防碰撞系统的工作使用的原则： -声波定位仪; -雷达; -低频近场感应。杂项声波定位仪虽然原则是非常好的，但是危险性在于如有强大的风力能吹动声波定位仪。雷达通常使用先进的雷达或微波多普勒雷达技术加上一些数字信号处理。内建安全电路，该系统可以检测对象可达约40米的距离起重机的Z大行驶速度为200米分钟。该雷达波束是发出将反映固体物体并会收到相同的雷达天线。它可以测量两个对象之间的距离，也是速度对象是接近感应对象。低频近场感应系统这些低频率系统的工作频率约为90 220千赫，并有一个约30米，Z大射程工作字母a 发射器和天线安装在diyi起重机和一个接收器和天线对附近的起重机。有了这个系统就可以安装 3起重机之间的距离的步骤，应该得到尊重。为了例如： -在30米远处一声响信号发出; -在20米距离的起重机的速度减少; - 5米的距离，Z后停止信号给出。

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加应子22 2009-10-26 00:00:00

鄙视翻译机！ 9.3 防碰撞系统有些防碰撞系统采用了这几个原理：－声纳系统; －雷达系统; －低频近场感应系统。多类型的组合。声纳系统系统工作原理虽然很不错，此系统的危险性在于强风可能将声纳波吹开。雷达系统通常将先进的微波或多普勒雷达技术和一些数字信号处理系统相结合。安全电路内置，该系统检测对象可达约40米的距离。起重机的Z大行驶速度为200米/分钟。该雷达波束是发出并被固体物体折射回来后被相同的雷达天线所接收。它可以测量两个对象之间的距离，也可以测定对象接近感应对象的速度。低频近场感应系统这种低频率系统的工作频率约为90－220千赫，并有一个约30米的Z大有效工作圈，把一套发射器和天线安装在diyi台起重机里面，另外有一套接收器和天线安装在邻近的起重机里。这个系统可以允许起重机之间按照三步法来安装，这种方法是应该被遵守的。举例来说：在30米处发出可听信号; 在20米处起重机减速; 在5米处发出Z后停车信号。

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Lu*鲁鹿 2009-10-28 00:00:00

9.3 防碰撞系统某些防碰撞系统利用以下工作原理工作：－声纳的原理－雷达的原理－低频近场感应原理分别介绍：声纳虽然原理很好，但这种系统存在声纳波被大风吹走的危险。雷达雷达通常采用先进的微波或多普勒雷达技术，并结合某些数字信号处理技术。安全电路是内置的，而雷达系统能够检测到40米左右距离的目标。起重机的Z大行进速度大约是200m/min. 发出的雷达波束将被固体物体反射回来，而且被同一台雷达天线接收。它可测量两个物体之间的距离，以及物体到达被检测物体的速度。低频近场感应系统这些低频系统工作在大约90到220kHz的频率下，Z大工作范围约30米。在diyi台起重机上安装发射机和天线，而在相邻的那台起重机上则安装接收机和天线。利用这样的系统就可能在两台起重机之间设置应该重视的3档距离。例如：在30米处发出可听见的信号; 在20米处起重机减速; 在5米处发出Z后停车信号。

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