{"id":1870,"date":"2020-03-14T02:43:27","date_gmt":"2020-03-14T02:43:27","guid":{"rendered":"HTTP:\/\/pioneeriot.com\/?page_id=1870"},"modified":"2020-03-23T05:08:38","modified_gmt":"2020-03-23T05:08:38","slug":"nb-iot-manhole-water-level-and-flow-monitoring-solution","status":"publish","类型":"page","link":"https:\/\/pioneeriot.com\/?page_id=1870","title":{"rendered":"NB物联网检查井水位和流量监控解决方案"},"content":{"rendered":"\n
\n

NB物联网检查井水位和流量监控解决方案 <\/strong><\/h2>\n\n\n\n

为了监控城市管网的排放量和容量以及工业的实际排放量, 生活污水和雨水, 应实时采集下游管道监控井中的液位，为上游排放控制和处理提供数据支持.<\/p>\n\n\n\n

特别是, 当实际排放量超过管道的容量时, 下游管道将被淹, 那是, 当监测井中的液位高度超过设定的阈值时, 应采取及时的缓解和疏measures措施，避免二次灾害.<\/p>\n\n\n\n

该智能监控产品可以实时测量管道中的液体速度和监控井中的液位高度, 通过算法处理数据并执行补偿校准, 并将数据转换为流数据.<\/p>\n\n\n\n

可以进行二次开发以通过浏览器或手机客户端显示测量结果. 如果流量异常或监测井高度超过阈值, 系统将发出预警和警报，并将其推送到手机客户端. 还可以主动查看实时监控结果并实现查询统计. <\/p>\n\n\n\n

工作准则<\/h3>\n\n\n\n

流量计算方法:<\/strong>
间接测量流量的两个相关量, 即管道中的液体速度和监测井中的液位高度, 用来计算管道中的流量, 即Q = S * V, Q =管道流量, S =截面积, V =液体速度
\u2022 算法 1. <\/strong>
测量管道中的液体速度和液位高度, 根据管道的流体特性，通过查阅表格获得相关参数, 并修改不同液位下的速度;通过液位高度计算出管道的恒定流量面积, 得到管道中的液体流量Q1.
\u2022 Algorithm 2. <\/strong>
测量管道中的液体速度和液位高度, 计算管道的恒定流量面积, 得到管道中的液体流量Q2.
流量Q1和流量Q2相互补偿，以获得管道中的液体流量Q. <\/p>\n\n\n\n

描述<\/h3>\n\n\n\n
\"\"<\/figure>
\n

\n\n\u2022 The monitoring device is installed at the downstream pipe entrance of the monitoring well, 如下所示.<\/p>\n\n\n\n

\u2022 The level sensor is put into the bottom hole liquid, 电流表如图所示安装.<\/p>\n\n\n\n

\u2022 The waterproof tube is fixed on the wall of the well, 液位传感器和速度计通过防水管连接到NB IoT变送器.<\/p>\n\n\n\n

\u2022 Solar and battery power are used, 和太阳能电池板 (可选的) 通过电缆引入监控井，为设备提供长期电力.<\/p>\n\n\n\n

\u2022 Data is transferred to the cloud platform server in NB IoT mode.<\/p>\n<\/div><\/div>\n\n\n\n

主要特点<\/h3>\n\n\n\n

感测器:<\/strong>
\u2022 Liquid level sensor: 输入类型 (静压力) + 配重板
\u2022 Current meter: 非完整雷达测量电流传感器<\/p>\n\n\n\n

传输方式:<\/strong>
\u2022 NB IoT long-distance transmission, 易于扩展<\/p>\n\n\n\n

主要特点:<\/strong>
\u2022 Low cost, 易于安装和维护
\u2022 Real-time remote monitoring
\u2022 High accuracy, 精度可选
\u2022 Applicable to all kinds of pipelines, 打开, 全管道或半管道流量监控;
\u2022 Applicable to sewage, 雨水, 工业废水排放监测;
\u2022 Can be used in wet and corrosive environment; <\/p>\n\n\n\n

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