rain sensor working principle
Within the domains of meteorological observation and water resources management, rain detector drop sensor serve as a stealthy protector. Thanks to their exacting measurements and trustworthy data, they assist us in demystifying the secrets of natural precipitation.Rainwater sensor represents a sophisticated high-tech instrument designed for the measurement of rainfall. Its emergence has substantially enhanced the precision and immediacy of rain gauge sensor monitoring, thereby furnishing essential backing for a multitude of domains, including weather forecasting, hydrological research, and agricultural production.Let’s learn the rain sensor working principle.
Tipping bucket rain drop sensor
Working principle:
This device is composed of several elements, specifically a water bearing device, an upper tipping bucket, a measuring tipping bucket, and a counting tipping bucket. Through the water bearing device, rainwater enters the upper tipping bucket. When the volume of rainwater builds up to a certain level, the upper tipping bucket will tip over and pour the rainwater into the measuring tipping bucket.
Generally, the capacity of the measuring tipping bucket remains unchanged. For example, it might correspond to 0.1 mm or 0.2 mm of rainfall. In this manner, we can calculate the precise amount of rainfall according to the frequency of the overturning of the counting tipping bucket.
Optical rain detector sensor
Working principle:
The principle of light scattering, transmission or reflection is used to measure rainfall. When a raindrop passes through a beam, it causes a change in the intensity, frequency, or phase of the light.
The amount of rainfall by detecting these changes and then carrying out signal processing and algorithm calculation.
Features:
Fast response speed and is capable of real-time monitoring of rainfall changes.
No mechanical parts, high reliability, not easy to damage.
The precision is higher and less affected by external environmental factors.
However, the cost is relatively high, and there are certain requirements for the installation and use environment.
Piezoelectric rainfall
Working principle:
When a raindrop makes contact with the rain detector sensor vibration element, the impact force of the raindrop induces a minute mechanical vibration on the vibration element. These vibrations are extremely faint. However, when the raindrop impacts and causes the mechanical vibration, which then instigates the mechanical stress on the piezoelectric material of the vibrating element, the piezoelectric effect engenders an electric charge. Through this progression, we can efficaciously transmute the impact energy of the raindrop into an electrical signal.
Features:
High accuracy: The impact intensity and frequency of raindrops can be accurately measured, thus accurately calculating rainfall.
High sensitivity: The impact of tiny raindrops can also produce obvious electrical signals, suitable for measuring light rain and trace rainfall.
Fast response: It can monitor the change of rainfall in real time, and the response speed is fast, which can provide timely rainfall data.
High reliability: no mechanical moving parts, not susceptible to wear and damage, long service life.
customer case
Monitoring environment：
We mount a weather station with a tripod on the roof. We use metal tipping – bucket raindrop sensors to collect rainfall in the vicinity of the house.
Rainfall resolution：0.1mm
Power supply:solar-powered
Data cycle:Upload every 15 minutes
Transmission mode:4G Data is uploaded to the CODA platform
To effectively monitor the impact of rainfall on the river level, we install the piezoelectric rainwater sensor on the single pole bracket beside the river. This location is carefully chosen as it provides an optimal vantage point for accurate data collection.
Rainfall resolution：0.2mm
Power supply:solar-powered
Data cycle:Upload every 30 minutes
Transmission mode:RS485 Integration into the system for data analysis
Monitoring environment：
Install rain gauge sensor in mountainous highlands to monitor how much rain falls in the area over time.
Rainfall resolution：0.2mm
Power supply:solar-powered
Data cycle:Upload every 60 minutes
Transmission mode:4G Data is uploaded to the CODA platform
Conclusion
In conclusion, rain gauge sensor hold an indispensable position in numerous sectors including meteorology, agriculture, hydrology, and transportation. As technology perpetually evolves and advances, further enhancements will be made to the capabilities of rainwater sensor, and their range of applications will continuously expand. We anticipate that they will confer greater convenience and benefits on the development of a wider variety of fields and on people’s daily lives.
