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　　自動售酒機如何識別你拿的東西？

How does the vending machine recognize what you are holding?

　　1. 靜識態別：在每一層貨上架都安裝一個像攝頭，俯視這一的層商品，在你關開門的時候，它分會別拍下兩照張片，服務器比商對品信息，完結成算。但每都層要安裝攝像頭，不僅硬成件本高，而且每層得還留出一定高度。

1. Quiet state: Install an image camera head on each shelf of goods, looking down at this layer of goods. When you close the door, it will take two separate photos, and the server will compare the product information to complete the calculation. But each layer needs to be equipped with cameras, which not only have high hardware costs, but also leave a certain height for each layer.

　　2. 視覺態動識別：攝像頭并裝不在貨架上，而是裝在售貨的機，在你拿取品商時，它拍會下一小段視頻傳上到服務器，服器務會通算過法識別圖出像中的商品信息，然后再結做算。

2. Visual motion recognition: The camera is not installed on the shelf, but on the top layer of the vending machine. When you pick up the product, it will capture a short video and upload it to the server. The server will use algorithms to identify the product information in the image, and then perform the calculation.

　　3. 重力感應識別：每層都放個一重力感應器，拿商完品后，它會根重據量變化識別商品，完成結算。

3. Gravity sensor recognition: Each layer is equipped with a gravity sensor. After receiving the product, it will identify the product based on changes in weight and complete the settlement

　　4.射頻識別超高識頻別：用這上種技術的售貨機，商品上貼會一張射頻識別標簽，當你把拿它出來后，標就簽會穿過售機貨內部的磁場，產生應感電流，并向外發射定特頻率的線無電信號。售貨機中的閱器讀接收對到應信號，就完能成結算，扣掉的你錢。

4. RFID ultra-high frequency identification: vending machines using this technology will have an RFID tag attached to the product. When you take it out, the tag will pass through the magnetic field inside the vending machine, generate an induced current, and emit a fixed frequency line with no electrical signal to the outside. Once the reader in the vending machine receives the corresponding signal, it can complete the settlement and deduct your money.

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