Application of optical rain gauge to rainfall detection

    Rainfall information is the main object of measuring atmospheric environment research and precipitation research , Also environmental monitoring 、 Important indicators and parameters of agricultural safety monitoring . Usually we monitor rainfall , Generally, tipping bucket or optical rain gauge is used , To perceive the rainfall in nature , At the same time, it is converted into the corresponding switch signal output , It can meet the information transmission in most scenarios 、 Handle 、 Need for recording and display .
    
    Precipitation monitoring is the observation of precipitation and precipitation intensity in time and space . The measurement methods include direct measurement with rain gauge and weather radar 、 An indirect method for estimating precipitation from satellite cloud images . The direct observation method needs to set the rainfall station network , The layout of the station network must have a certain spatial density , And stipulate the unified frequency and the time of data transmission , Relevant requirements are determined according to the intended use .

    The function of tipping bucket rain gauge is relatively simple , By using mechanical equipment to measure rainfall , Although rainfall data can be obtained , But it can't reflect the rainfall in real time , Only the rainfall in a certain period of time can be counted . For some industries that need multiple rainfall data , The function is slightly insufficient . But the appearance of optical rain gauge solves this problem .

 

   IFR202 Type a optical rain sensor is a non-contact sensor that detects rainfall through infrared scanning principle , Inside, the principle of optical induction is used to measure rainfall , Built in multiple optical probes , Rainfall detection is reliable . Different from traditional mechanical sensors , The optical rain gauge is smaller , More sensitive and reliable , More intelligent , Easy maintenance . It can be widely used in rainfall monitoring in various scenes , Wisdom irrigates 、 The ship sails 、 Mobile weather station 、 Automatic doors and windows 、 Geological disasters and other industries and fields .

Rainfall classification test curve of optical rain gauge , There are several types ： Attached type , discrete , intensive , Scour type .

 

performance parameter
Working humidity 100%RH
Measurement accuracy 0.2mm
Signal output RS232/RS485/ pulse
Power input DC6V~12V
response time ≤1ms
working temperature -25~80℃

Advantages
  High sensitivity ： Electronic optics and a series of microelectronic filters are used 、 Zoom in 、 Detection technology , This principle has sensitivity advantages over conventional mechanical rain gauge .
  Maintenance free ： Completely enclosed structure , No mechanical parts , No wear .
  Installation is simple ： Infrared optical rain gauge is non-mechanical and non-contact measurement , No horizontal installation requirements .
  It can be measured in motion ： There are no mechanical parts inside , Rainfall can be measured while traveling , No effect on accuracy .
  Sensitivity configurable ： Programmable light energy monitor is used inside , The sensitivity of light energy change perception can be modified by the user .
  Tilt correction ： The internal tilt sensor is involved in the calculation , Generate correction factor , Correct the rainfall .
  Power waste ： When there is no rainfall , The device is in deep sleep , It will be activated automatically when it rains .
  Signal output ：RS485 Signal output , Long communication distance ; Pulse output , Convenient collection .

Application field
Landslide monitoring , Catchment measurement , Flood monitoring , Weather and rainfall monitoring , Debris flow monitoring , Runoff monitoring , Vehicle rainfall monitoring , Rainfall monitoring in various scenes such as small weather stations .