基于无线传感器网络的照明测量系统

Illumination Measurement System Based on Wireless Sensor Networks

采用手持式仪器在照明现场对照明参数进行逐点测量不仅效率低而且精度差。本文运用ZigBee和GPRS技术,研制了基于无线传感器网络的照明测量系统,该系统由照度、亮度和色温无线传感器结点、ZigBee-GPRS网关、服务器和客户端组成,能够对照度、亮度、色温等参数进行多点同步采集,实现测量数据的自动无线传输。开发了梯形光阑亮度传感器、可调测色校正系数色温传感器及传感器灵敏度漂移和零点漂移补偿技术,进一步提高了系统的测量效率和精度,为照明测量提供了准确高效的工具。

Measuring illumination parameters on site by handheld instruments is not only inefficient but also inaccurate. By applying ZigBee and GPRS technology, an illumination measurement system based on wireless sensor networks has been developed. The system is composed of wireless sensor nodes of illuminance/luminance/color temperature, ZigBee-GPRS gateway, server and clients, and can sample the illumination parameters of multiple spots simultaneously and transmit the data automatically via wireless. In order to improve the measurement efficiency and accuracy, luminance sensor with trapezoid aperture, color temperature sensor with adjustable correction factor, and compensation techniques for sensitivity drift and zero drift of sensors have been developed. As is proved in practice, the system is an accurate and efficient tool in illumination measurement.