装配式架线施工导线精确测长设备的研制

导线长度的精确测量是装配式架线施工中的关键问题。而现有装配式架线施工技术由于缺乏导线实时展放长度的精确测量技术，导致施工误差过大而无法推广应用。为此，结合装配式架线施工的工程应用需求，以导线长度精确测量和画印功能为功能目标，研制了一种适用于装配式架线施工工况的导线精确测长设备。在硬件方面，选用增量式光电编码器采集导线的长度信息，采用远距离无线电(LoRa)技术进行数据无线传输，当展放长度达到阈值时，设计驱动电路控制喷漆泵进行画印喷漆；以上功能通过专用的供电模块实现施工过程中免充电需求。在软件方面，设计了长度测量算法，开发了基于手持终端的导线实时展放测量系统。研制的测长设备已成功应用于实际工程，实测架线后的观测档弧垂与设计弧垂的偏差值为4.57%,符合工程设计要求。

Development of prefabricated wire construction wire precision length measurement equipment

The accurate measurement of conductor length is a key issue in prefabricated wire construction. However, due to the lack of accurate measurement technology of real-time spreading length of conductors, the existing prefabricated wire construction technology is too large to be popularized. Therefore, combined with the engineering application requirements of prefabricated wire construction, and taking the function of accurate measurement of conductor length and printing function as the functional goal, an accurate length measurement equipment suitable for prefabricated wire construction conditions was developed. In terms of hardware, incremental photoelectric encoder is selected to collect the length information of the wire, and long-distance radio (LoRa) technology is used for wireless data transmission, and when the unfolding length reaches the threshold, the drive circuit is designed to control the paint spray pump for painting and painting; The above functions realize the need for free charging during construction through a dedicated power supply module. In terms of software, the length measurement algorithm was designed, and a real-time wire spreading measurement system based on handheld terminal was developed. The developed length measuring equipment has been successfully applied to actual engineering, and the deviation value between the observation file sag and the design arc sag after the measured frame line is 4.57%, which meets the engineering design requirements.