Department of Agricultural and Biological Engineering, Purdue University, 225 S. University St., West Lafayette, IN 47907, USA.
Sensors (Basel). 2010;10(12):11590-604. doi: 10.3390/s101211590. Epub 2010 Dec 16.
Continuously monitoring the operation of each individual fan can significantly improve the measurement quality of aerial pollutant emissions from animal buildings that have a large number of fans. To monitor the fan operation by detecting the fan vibration is a relatively new technique. A low-cost electronic vibration sensor was developed and commercialized. However, its large scale application has not yet been evaluated. This paper presents long-term performance results of this vibration sensor at two large commercial layer houses. Vibration sensors were installed on 164 fans of 130 cm diameter to continuously monitor the fan on/off status for two years. The performance of the vibration sensors was compared with fan rotational speed (FRS) sensors. The vibration sensors exhibited quick response and high sensitivity to fan operations and therefore satisfied the general requirements of air quality research. The study proved that detecting fan vibration was an effective method to monitor the on/off status of a large number of single-speed fans. The vibration sensor itself was $2 more expensive than a magnetic proximity FRS sensor but the overall cost including installation and data acquisition hardware was $77 less expensive than the FRS sensor. A total of nine vibration sensors failed during the study and the failure rate was related to the batches of product. A few sensors also exhibited unsteady sensitivity. As a new product, the quality of the sensor should be improved to make it more reliable and acceptable.
持续监测每个风扇的运行情况，可以显著提高对拥有大量风扇的动物建筑物中空气污染物排放的测量质量。通过检测风扇振动来监测风扇运行是一种相对较新的技术。已经开发并商业化了一种低成本的电子振动传感器。然而，其大规模应用尚未得到评估。本文介绍了这种振动传感器在两个大型商业层舍中的长期性能结果。在 164 个直径为 130 厘米的风扇上安装了振动传感器，以连续监测两年的风扇开/关状态。将振动传感器的性能与风扇转速（FRS）传感器进行了比较。振动传感器对风扇的运行具有快速响应和高灵敏度，因此满足空气质量研究的一般要求。该研究证明，检测风扇振动是监测大量单相风扇开/关状态的有效方法。振动传感器本身比磁感应 FRS 传感器贵 2 美元，但包括安装和数据采集硬件在内的总费用比 FRS 传感器便宜 77 美元。在研究过程中，共有 9 个振动传感器发生故障，故障率与产品批次有关。一些传感器的灵敏度也不稳定。作为一种新产品，传感器的质量需要提高，以使其更加可靠和可接受。
