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1. 发明授权

US08451460B2 Monitoring system for the acquisition of the layer thickness of dust in ventilation ducts 有权
标题翻译：采集通风管道灰尘层厚度监测系统
公开(公告)号：US08451460B2
公开(公告)日：2013-05-28
申请号：US12735063
申请日：2008-12-18
申请人： Nigel Jones , Ron Ashby
发明人： Nigel Jones , Ron Ashby
IPC分类号： G01B11/06
CPC分类号： G01V8/12 , G01B11/0683 , G01B11/2433 , G01N21/94 , G01N2021/5957 , G01N2021/5961 , G01N2021/945 , G01N2201/0696 , G01N2201/1247
摘要： A monitoring system is disclosed, designed to detect the depth of deposition of a substance on a′ surface (12), such as the depth of dust in a ventilation shaft. The monitoring system includes a light source (14) and a sensor (16, 30). The light source is arranged to transmit light across a detection surface and the sensor is on the other side of the detection surface. When a substance, such as dirt or grease, is deposited on the surface it obstructs the light and the amount of light reaching the sensor decreases. A processing means (26) detects the decrease in light and from this the depth of the deposition on the surface can be calculated. Preferably the sensor comprises a CCD array (32), and the substance throws a shadow on the array. The processing means can then determine the depth of the substance from the position on the array of the edge of the shadow. Preferably the monitoring system is placed in a low power ‘sleep’ mode in between intermittent operations for detecting the depth of the substance. In this, way, it can be battery operated and the battery life is preserved.
摘要翻译：公开了一种监测系统，其设计用于检测物质在“表面（12）上的沉积深度，例如通风轴中灰尘的深度。监测系统包括光源（14）和传感器（16,30）。光源被布置成将光透过检测表面，并且传感器位于检测表面的另一侧。当物质如污垢或油脂沉积在表面上时，它会阻挡光线，并且到达传感器的光量减少。处理装置（26）检测光的减少，从而可以计算出表面上沉积的深度。优选地，传感器包括CCD阵列（32），并且该物质在阵列上投射阴影。处理装置然后可以从阴影边缘的阵列上的位置确定物质的深度。优选地，监测系统在用于检测物质深度的间歇操作之间被置于低功率“睡眠”模式。在这种方式下，可以进行电池操作，并保持电池寿命。

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