Mobile carrier, safety warning device, and safety warning method

The invention relates to a safety warning method. The method comprises: step one, generating a plurality of distance sensing signals by an optical object ranging module based on an approaching object; step two, acquiring a relative distance trend based on the distance sensing signals and corresponding time; step three, generating a control signal based on the relative distance trend; and step four, driving and controlling a warning module to generate a warning signal based on the control signal. In addition, the invention also provides a mobile carrier and a safety warning device. 一种安全警示方法包括下列步骤，步骤一由一光学物件测距模块依据一接近物件，进而产生多个距离感测信号；步骤二依据这些距离感测信号及其对应时间，而得到一相对距离趋势；步骤三依据相对距离趋势而产生一控制信号；步骤四依据控制信号而驱动控制一警示模块产生警示信号。本发明也提供一种移动载具及安全警示装置。