An automatic table tennis ball server is designed by using infra-red sensor and a few electric devices.

利用红外光传感器和较少的电子器件，设计了一种乒乓球全自动供球器。

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By analysing data from a sensor that detects light in both the visible and the near-infra-red spectrum, a computer is able to determine the colour, type, shape and position of each item.

另外，内置传感器可在可视光谱与似乎红外光谱下探测到光线，计算机通过分析传感器的数据后便能够决定每个物件的颜色、类型、形状与位置。

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These include a camera, ultrasound, infra-red and thermal sensors, a range-finder sensor, a temperature sensor and ground detectors.

这些包括照相机，超声波，红外线和热传感器，一个测距仪传感器，温度传感器和地面探测器。

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Night-vision lets the driver see up to five times as far, using a passive infra-red sensor.

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The Predator comes equipped with radar, seven video cameras, an infra-red sensor and a powerful zoom.

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Patrons can browse through a menu on their table, or type text, with the help of that all-important infra-red sensor, with the information sent back to waiting staff.

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