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入射风暴:AMS的闪电探测器

消耗积分:0 | 格式:rar | 大小:0.25 MB | 2017-06-22

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  入射风暴:AMS的闪电探测器

  “被闪电击中的机会”是用来表示某事不可能发生的短语。然而,根据美国国家气象服务¹54死亡的报告,每年在美国平均(1982到2010)是由于雷击,而只有百分之十的人却死了。历史表明,一个人一生遭受雷击的几率大约是1000的1。

  其中许多死亡和伤害是可以避免的。一个典型的原因是在风暴中仅仅是在一个不安全的地方。这可能意味着,当典型的午后风暴袭来,或者在宁静的山谷湖游泳时,并没有注意到即将到来的风暴,这可能意味着被派克峰捕获。

  如果有足够的警报来接近风暴,这种情况是可以避免的。虽然在闪电和打雷之间计算秒数的经验法则给人一种安全感,但人们不能总是看到闪电(尤其是如果云是云),有些人根本就不注意。例如,当一个人在湖边游泳的时候,需要找到住处,那就太晚了。

  奥地利(现在的AMS)开发了一个传感器使风暴预测更可靠的叫富兰克林闪电传感器,该as3935。它是一个单芯片电路,可以检测和提供一个距离估计的“领先优势”的来袭风暴。

  入射风暴:AMS的闪电探测器

  The phrase “leading edge” is a bit misleading, since it suggests that one is in the direct path of the storm. In fact, for the purposes of this sensor, the leading edge is simply the closest edge of the storm, which may never actually arrive if the storm delivers a glancing blow nearby. However, its distance away from you – regardless of where it is heading – is the most relevant information.

  The algorithms used to estimate the distance are hard-coded in circuitry; there is no software involved. Various pins and registers can be set to configure different settings, but the fundamental calculations remain opaque to the user. This simplifies the use of the device dramatically. It would typically be connected to a microcontroller or some other external circuit. The AS3935 will generate distance estimates, but it is up to the rest of the system to do something with that information, such as issuing some sort of warning.

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