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表现更像是一个刚摸车的驾校学员
2017-08-27 14:56:43 中国青年网
本报讯(记者王琪鹏)昨天,记者坐上了由中山大学无人系统研究所研发的无人车,亲身体验了一把“无人驾驶”。不过,和人类的“老司机”比起来,无人车的表现更像是一个刚摸车的驾校学员。
记者乘坐的这辆无人车是在一辆SUV的基础上改造的,除了车顶部有一个飞速旋转的圆柱形装置外,在外观上与普通SUV没有太大区别。中山大学的单云霄老师介绍,这是一个激光雷达,通过这个装置,车辆可以感知周围环境,并将信号传输到车辆内部的计算单元,从而得到一条行驶路径。
其实,无人车的内部才是别有洞天。在副驾驶位置前面,安装了显示屏和摄像头,车的后备箱也经过了改造,放置着各种仪器。从一辆普通的SUV到一辆无人车,这辆车加装了激光雷达、毫米波雷达、摄像头、GPS、惯导系统等价值几十万元的设备。据了解,这辆无人车的研发时间仅有一年多,目前在国内属于中等水平。
说是无人车,但并不是“无人驾驶”,驾驶的位置上同样坐着“司机”。但是在行驶过程中,方向盘是自己在转动,“司机”只负责将车启动,接下来的直行、变道、拐弯等动作都是由无人车自己来完成。
单云霄介绍,驾驶位置上的人主要任务是处理紧急情况。比如在有人驾驶中再正常不过的会车,到了无人车这里就成了一件格外小心的事。“因为对方也是无人车,我们不知道对方的系统会做出什么样的判断。”出于安全考虑,这辆无人车的速度始终保持在20迈以下。但在体验过程中,无人车遇到前方来车时,都会自动减速,有时甚至会停下来。驾驶位置上的“司机”也是如临大敌。从这个角度来看,无人车的车技不仅远不如“老司机”,甚至比大多数新手司机都要差一些。
单云霄表示,虽然无人车已经在高速公路上进行了实验,但距离在城市街道上行驶还有很长一段路要走。J219 甘南 摄 J216
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