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含义:隔离器

  隔离器是一种采用线性光耦隔离原理,将输入信号进行转换输出。输入,输出和工作电源三者相互隔离,特别适合与需要电隔离的设备仪表配用。隔离器又名信号隔离器,是工业控制系统中重要组成部分。隔离器新国家标准的制订由重庆宇通仪表主持起草。
隔离器, 信号隔离器; signal isolator, signal converter
系统产生干扰的原因
在工业生产过程中实现监视和控制需要用到各种自动化仪表、控制系统和执行机构,它们之间的信号传输既有微弱到毫伏级、微安级的小信号,又有几十伏,甚至数千伏、数百安培的大信号;既有低频直流信号,也有高频脉冲信号等等,构成系统后往往发现在仪表和设备之间信号传输互相干扰,造成系统不稳定甚至误操作。出现这种情况除了每个仪表、设备本身的性能原因如抗电磁干扰影响外,还有一个十分重要的因素就是由于仪表和设备之间的信号参考点之间存在电势差,因而形成“接地环路”造成信号传输过程中失真。因此,要保证系统稳定和可靠的运行,“接地环路”问题是在系统信号处理过程中必须解决的问题。
解决“接地环路”的方法
根据理论和实践分析,有三种解决方案:
第一种方案:所有现场设备不接地,使所有过程环路只有一个接地点,不能形成回路,这种方法看似简单,但在实际应用中往往很难实现,因为某些设备要求必须接地才能保证测量精度或确保人身安全,某些设备可能因为长期遭到腐蚀和磨损后或气候影响而形成新的接地点。
第二种方案:使两接地点的电势相同,但由于接地点的电阻受地质条件及气候变化等众多因素的影响,这种方案其实在实际中无法完全做到。
第三种方案:在各个过程环路中使用信号隔离方法,断开过程环路,同时又不影响过程信号的正常传输,从而彻底解决接地环路问题。

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If you need this domain(website), please contact us to purchase it by our contact information.You may refuse to buy domain names, but competitors may not. We will reply soon after receiving your consultation. All replies are valid for 3 days.


△ 网站没有好域名,即使全力推广,也难以让人记住,造成对广告的长期依赖。好域名一看就记住,节省大笔广告费,还能带来大量的流量!

Website does not have a good domain name, even if fully promoted, it is difficult to remember, resulting in long-term dependence on advertising. A good domain name, remember at a glance, can save a lot of advertising costs, but also bring a lot of traffic!


△ 如果说网站是通向世界的门,那么域名就是这个通向世界之门的门牌号。

If a website is viewed as profile to the Internet world, then a domain is simply face of the website.


△如果把互联网比作房地产,那么域名就是口岸和地段。

If Internet is compared as real estate, Then a domain can be compared as a port or location.


△好域名是一种稀缺资源,不仅能带来人气和流量,更能带来商机和财源。

Good domains are always resource of rarity, They brings to you more visitors and traffic, And consequently more business opportunities and revenue.


△域名是一种不可再生资源。如果已经在你手上,就意味着别人不能拥有。

Domains are non-renewable resource. If it already in your hands, it means that others can not have it.


△ 最适合您的域名一般不多,也许仅此一个;错过一时,遗憾一生。

The most suitable domain for you is not enough, Maybe the only one.;Miss it in a moment, regret all life.


△ 注意到本域名,证明了您卓越的眼光,也证明了此域名的价值。

Your notice of this domain name reflects your business sense, As well as value of the domain name.


△行业、品牌、商号域名不在自己手中,意味着失去了互联网上的关键入口。

If the domain of Trade、Brand or trade name is not in your own hands, That means lossing the key entry on the Internet.


△一旦域名落入竞争者之手,就等于要遭受持续的打击。域名正在出售,不要被竞争对手买走,而损失客户。

Once the domain falls into the competitor,  It is tantamount to a sustained blow.Domain is being sold, not to be bought by competitors, and loss of customers.


△顶级域名,自然天成!互联网+时代 你应当拥有一个像样的域名,创建一个顶级网站,跟上互联网+时代的步伐。

Top-level domain, Naturalness! Internet+ times, you should have a excellent domain name, create a top-level site, Stay ahead with Internet+ times step.


△趋势的发展,一直走在时代的前端,要把握住风口,做那只会飞的猪!

The trend of development has been walking in the forefront of the times,we must grasp the outlet,As the fly pig!


△项目未做不必担忧,精品在手,域名能够保值增值。

Do not worry about the project did not to do, boutique in hand, the domain name can preserve and increase value.


△早一天拥有,早一天心安;早一天使用,早一天受益!

As early as the day to own it, as long as a day you to be Calm;As early as the day to use it, as long as a day you to benefit.


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