Development of Non-Contact Control/Measurement System for Free-sailing Model Ships

一个新的用于免费航运模型船的非接触控制/测量系统已经开发出来，将适用于各种免费航运测试。这是很难通过传统的无线电控制系统携带出来的。该系统是一个安装在模型船中的微型计算机系统的组成部分，它通过一套无线调制解调器在陆地上与个人计算机通信。个人计算机将通过A/D、D/A和DIO板控制和测量微型计算机，这些计算机与螺旋桨、梯形图和传感器相连。另一个系统是一个使用两台视频摄像机、实用图像处理和模型上定期转换的定位测量系统。在发生在一个模型船的置换对仪器来说是不合适的，这个系统将是一个优点。六个等级的自由测量是可能的，如果该系统将与非接触控制/测量系统的陀螺信号测量结合在一起。该系统应用于在很大成功的情况下进行常规跟踪测试（水证明、撞击力能力、六个等级的自由测量能力和基本系统检查已完成。）2）在户外模型基地中进行常规/非常规海捕获测试（数字通信能力的户外完成;使用视频摄像机进行位置测量的地点没有在这里完成）3）在室外模型基地中的静止水中进行过度易失性测试（使用视频摄像机完成的位置测量）

A New non-contact control/measurement system for free-sailing model ships is developed, which will be applicable for various free-sailing tests. It was difficult to carry out by conventional radio-control system. The system is consists of a micro-computer system installed in a model ship, which is communicated with a personal computer on land via a set of wireless modems. The personal computer will order the micro-computer to control and measure through A/D, D/A and DIO boards, which are connected with a propeller, a rudder and sensors.Another system is position measurement system using two VIDEO cameras, utilizing image processing and ordinate transformation of a point light on a model ship. In cases where displacement of a model ship is insufficient for instruments, this system will be a merit. Six degree of freedom measurement is possible, if this system will be combined with the gyro signal measured by the nonーcontact control/measurement system.The system is applied to the following experiments with great success.1) Capsizing tests in regular following seas in a towing tank (where water-proofness, impact force torelance, six-degree-of-freedom measurement capability and the fundamental system check were done.)2) Capsizing tests in regular/irregular following seas in an outdoor model basin (where outdoor capability of digital communication was done ; position measurement using VIDEO cameras was not done here.)3) Manoeuvrability tests in still water in an outdoor model basin (where position measurement using VIDEO cameras was done.)