公开(公告)号：US20180094416A1

公开(公告)日：2018-04-05

申请号：US15720925

申请日：2017-09-29

申请人： Michael GIBSON ,  Larry BOYLE ,  Raymond MACDONALD ,  Joseph MACISSAC ,  Michael SZKUDLAREK ,  Bob BIELAWSKI

发明人： Michael GIBSON ,  Larry BOYLE ,  Raymond MACDONALD ,  Joseph MACISSAC ,  Michael SZKUDLAREK ,  Bob BIELAWSKI

IPC分类号： E03F7/00 ,  G08B21/18 ,  H04Q9/00

CPC分类号： E03F7/00 ,  E03F7/04 ,  E03F2201/40 ,  G08B21/182 ,  H04Q9/00 ,  H04Q2209/40 ,  H04Q2209/823

摘要： The present disclosure describes systems and apparatus for detecting an impending sewer backup by detecting fluid undulations of predetermined magnitude inside a main body of a backwater valve. When at least a predetermined number of fluid undulations of predetermined magnitude are detected within a predetermined time period, an alarm can be triggered. Such undulations can be detected by monitoring a buoyant gate in a normally-open backwater valve to detecting instances of movement of the gate from a lowered position in which fluid flow from an inlet through the backwater valve is unobstructed by the gate toward but stopping short of a raised position in which the gate closes the inlet to obstruct fluid flow through the valve. For example, a sensor can be carried on the gate to detect movement of the gate. Alternatively, fluid levels inside the main body can be monitored directly.