磁电传感器在数字摄影测量工作站中的应用

目前国内各大测绘单位的航测内业成图软件大多数选用了全数字摄影测量工作站。磁电传感器应用于该工作站的脚踏开关系统,与以往的机械式脚踏开关系统相比,大大提高了数据采集的响应频率,成功地解决了数据采集过程中的重复采集,连点采集,漏采数据的问题。直接减轻了作业员,检验员,硬件维修人员工作量,从而大大提高了作业的效率。磁电传感器是一种非接触式传感器,它具有无触点、无开关瞬态抖动、响应频率高、低功耗、高可靠性和长寿命等特点。本文通过分析霍尔传感器件的原理,结合数字摄影测量工作站硬件设备的相关电路,给出了把霍尔传感器应用到数字摄影测量工作站脚踏开关系统中的具体方法。

Applications of magnetoelectric sensor on the digital photogrammetric worksStations

The Digital Photogrammetric Workstations(DPW)have been used to produce map obtained by photogrammetric restitution of indoor work by most of internal survey departments.The magnetoelectric sensor has been applied to the pedal switch system in the DPW.Comparing with past mechanical pedal switch system,the Hall element pedal switch system can increase the response speed of collecting data and greatly raise work efficiency.Magnetoelectric sensor is a kind of non-contact sensor and has some useful characteristics,such as non-contact,high response frequency,low power waste,high reliability,long life-span and etc.On the basis of analyzing the theory of Hall element and combining with the relevant electric circuits of the hardware of the DPW,this paper gives a specific method of using Hall element into pedal switch system of the DPW.