評論
打印
So we decided to design a cover for the sensor so that people don't have to worry what it is on the ground.
所以我們決定給傳感器加個蓋板，這樣人們就不用擔心放在地上的是什么了。
So after some experimentation, we decided to use an industrial sensor,
在經過幾次實驗后，我們打算使用工業級的傳感器，
used as a safety trigger in hazardous areas as the sensor, and a black neoprene rubber sheet as the cover.
這種傳感器在危險地區被用作安全觸發器，并用一塊黑色的氯丁橡膠板作為蓋子。
Now, another added benefit of using black rubber was that dust naturally accumulates over the surface,
另一個使用黑色橡膠板的好處是，灰塵會自然聚集在表面，
eventually camouflaging it with the ground.
最終偽裝成土地表面的樣子。
We also had to make sure that the sensor is no higher than 12 millimeters.
我們還需要確保傳感器的厚度不能超過12毫米。
Otherwise, people might trip over it, which in itself would cause stampedes. We don't want that.
否則人們會被絆倒，這本身就會引起踩踏。我們可不想這樣。
So we were able to design a sensor which was only 10 millimeters thick.
所以我們設計了只有10毫米厚的傳感器。
Now the data is sent to the server in real time,
現在數據實時傳回服務器了，
and a heat map is plotted, taking into account all the active devices on the ground.
熱點圖生成了，基于地面這些所有的活躍設備。
The authorities could be alerted if the crowd movement slowed down or if the crowd density moved beyond a desired threshold.
政府部門就可以知道人群慢了下來，或者人群密度超過了期望的閥值。
We installed five of these mats in the Nashik Kumbh Mela 2015,
我們在2015年納西克大壺節上安裝了5塊傳感墊子，
and counted over half a million people in 18 hours,
在18個小時內統計出了超過50萬人，
ensuring that the data was available in real time at various checkpoints, ensuring a safe flow of people.
確保了不同采集點數據的可用性和實時性，確保了人流的安全。
