108

5,680 千元

2019/04/11

2019/12/15

徐學樑

嘉義市政府環境保護局

林宛臻

亞太電信股份有限公司

大氣空氣

揮發性有機化合物、細懸浮微粒、 物聯網

PM2.5, VOCS, IoT

蕭安國

06-5100000#

anko0907@gmail.com

本計畫主要四項工作重點，為新建50站與8具風速風向計布建、既有200站巡檢維護、民眾版環境資訊查詢平臺、感測器數據運用及熱區數據分析。 本期新建50站，目前PM2.5感測元件彼此間的一致性表現仍以國外廠牌為主。107年原使用之PM2.5感測元件廠牌為Plantower， 是一般公認元件間之一致性表現優的產品，且整機已於107年通過工研院型式驗證。今年度因應感測元件也可能禁用大陸產品之風險，選用瑞士Sensirion元件，更換PM2.5感測元件為瑞士品牌，通訊模組也將更換為義大利品牌，更換後將依規範要求通過型式驗證後才可使用。感測器送工業技術研究院量測發展中心型式驗證程序已於8月底前核可通過。 本計畫執行巡檢規劃，已於嘉義大學測站架設比對源使用之比對架，完成巡檢前比對後開始進行現場巡檢比對，每個感測器至少一季巡檢一次。本計畫巡檢數量為202台，未過檢測標準數2台，已於10月9日完成更換，資料缺失數為1台，資料缺失部分主要原因為無線信號可能因天候(如下雨)，訊號會受到濕度干擾，造成訊號傳輸的不良狀況，改善方式為下月巡檢比對補測，同時於無線信號採24小時監控，若有異常會發出通知，並由專人進行確認修正，確保通訊品質。民眾版環境資訊查詢平臺主要以感測器實際點位為單位，以即時資料呈現空氣品質顏色等級，可回播最近6小時逐時趨勢變化，同時以嘉義市空品旗圖卡建議民眾在各種空氣品質等級下之保護措施。 在輔助稽查應用方面，依據感測器即時監測及廣泛布建之特性，透過統計分析，依感測屬性提供長期污染潛勢熱點。在社區感測中，由感測器濃度趨勢及時間特徵推估兩例長期污染潛勢熱點之成因，其一為市場活動；另一列為餐廳油煙排放致使感測器VOCs濃度於營業時間都有高值發生，且透過監測之時間特徵進行稽查，查獲排放超標之情形並開罰。於後湖工業區PM2.5污染潛勢熱區為東北角及忠孝一街、二街區域；VOCs污染潛勢熱區落於後湖工業區東北角及東南角，共提供13家可疑污染源，目前針對熱區尚未找到明確污染成因，推測可能因工廠排放煙囪高度較高，致使污染來源並非臨近感測點，故需透過更多資訊及相關模擬以確認污染源。 感測器在輔助陳情查訪方面，目前透過感測器告警分析系統，協助稽查人員查獲露天燃燒污染行為1件，但在實際協助其他子計畫核查績效上仍有取多精進空間，因此在數據應用分析，改採已持續追蹤與觀察，透過將其他子計畫回饋資訊彙整進行感測器數據比對分析，將本市的陳情事件及告警事件之關聯性，共比對陳情事件數16筆，其中以感測器PM2.5為監測項目為4筆；感測器VOCs為監測項目為12筆，以PM2.5為監測項目僅有1筆感測器有反應；與感測器VOCs濃度比對，發現陳情時間與濃度有3-4小時的落差，但在監測餐飲油煙方面皆有峰值變化，此外依據統計分析找出污染潛勢區域，並提供相關可疑污染源輔助稽查。

揮發性有機化合物、細懸浮微粒、 物聯網

108嘉義市空氣品質感測器布建計畫案期末報告(定稿).pdf

7MB

2020/1/31 上午 12:00:00

The main jobs of this project is to deploy 50 stations and 8 wind- meters, 200 existing stations inspection and maintenance, public version of environmental information inquiry platform, and hot zone data analysis. In response to the risk that the sensing element may also disable mainland products this year, the Swiss Sensirion element will be selected. This year, the PM2.5 sensing element will be replaced with a Swiss brand, and the communication module will also be replaced with an Italian brand. Available only after passing type approval. The type verification procedure for the sensor to be sent to the Measurement and Development Center of the Industrial Technology Research Institute was approved before the end of August. In this study implements the inspection plan. A comparison frame used by the comparison source has been set up at the Chiayi University station. After completing the inspection before the inspection, the site inspection comparison will be started. Each sensor will be inspected at least once a quarter. The number of 202 is inspections in this plan, and the number of two device is inspection standards. The replacement was new ones on October 9. The number of one is missing data . The main reason for the lack of data is that the wireless signals may be due to weather. The signal will be disturbed by humidity, causing a bad condition of signal transmission. The improvement method is next month's inspection and comparison and supplementary testing. At the same time, the wireless signal will be monitored 24 hours. quality. The public version of the environmental information query platform mainly uses the actual point of the sensor as the unit, presents the air quality color level with real-time data, and can broadcast the trend change over time in the last 6 hours. Protective measures at air quality level. In terms of auxiliary auditing applications, based on the characteristics of real-time monitoring and extensive deployment of sensors, through statistical analysis, it provides long-term pollution potential hotspots based on sensing attributes. In community sensing, the causes of two long-term pollution potential hotspots are estimated from sensor concentration trends and time characteristics. One is market activity; the other is the restaurant ’s soot emissions that cause the sensor VOCs concentration to be at business hours. High values occur, and an audit is performed through the time characteristics of the monitoring to detect the situation of excessive emissions and a penalty will be issued. The PM2.5 pollution potential hot zone in Houhu Industrial Zone is the northeast corner and Zhongxiao 1st Street and 2nd Street. The VOCs pollution potential hot zone is located in the northeast and southeast corner of Houhu Industrial Zone. A total of 13 suspected pollution sources are provided. At present, no clear cause of pollution has been found for the hot zone. It is speculated that the source of pollution may not be near the sensing point due to the high height of the chimney emitted by the factory. Therefore, more information and related simulations are needed to confirm the source of the pollution. In terms of assisting the visit of the sensor, the sensor currently uses the sensor alarm analysis system to assist the auditor in detecting one case of open-air pollution. However, there is still much room for improvement in actually assisting other sub-plans to verify the performance. Application analysis has been adopted to continuously track and observe the changes. The sensor data comparison analysis is performed through the integration of other sub-project feedback information, and the correlation between the city's events and alarm events is compared to a total of 16 events. Among them, 4 were monitored with sensor PM2.5; 12 were monitored with VOCs, and only 1 sensor responded with PM2.5; with the VOCs concentration of the sensor By comparison, it was found that there was a difference of 3-4 hours between the time of aging and the concentration, but there were peak changes in the monitoring of catering fume. In addition, the potential areas of pollution were found based on statistical analysis, and related suspicious sources of pollution were provided to assist the inspection.

PM2.5, VOCS, IoT