how does a rainwater sensor work​?

rainwater sensor working principle

In weather observation and water management, rain detector drop sensors act as quiet protectors. Their accurate measurements and reliable data help us understand the mysteries of natural rainfall.

A rainwater sensor is a smart tool that measures rainfall. It has made rain gauge monitoring faster and more accurate. This helps many fields, like weather forecasting, water research, and farming. Let’s explore how the rain precipitation sensor works.

Tipping bucket rain drop sensor

Working principle:

This device has many parts. It includes a water-bearing device, an upper tipping bucket, a measuring bucket, and a counting bucket.

Through the water bearing device, rainwater enters the upper tipping bucket. When rainwater collects to a certain level, the upper tipping bucket will tip over. It will then pour the rainwater into the measuring bucket.

The capacity of the measuring tipping bucket usually stays the same. For example, it can measure 0.1 mm or 0.2 mm of rain. We can find the total rainfall by counting how many times the tipping bucket tips over.

Features:
 

It has high measurement accuracy and great stability.

Its structure is simple, making maintenance and installation easy.

It is suitable for rainfall monitoring in different environments.

rainfall sensor rain detector sensor​
CDY-12A Tipping Bucket Rainfall
rain gauge
CDY-10B Metal Economical Tipping Bucket Rainfall

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 is measured by detecting changes. After that, we process signals and perform calculations.

Features:

It has a fast response speed and can monitor rainfall changes in real-time.

There are no mechanical parts, which makes it very reliable and hard to damage.

It offers high precision and is less affected by outside factors.

However, it is relatively expensive and has specific requirements for installation and use.

Optical Rain Sensor
CDY-15A Optical Rain Sensor

Piezoelectric rainfall

Working principle:

When a raindrop hits the rain detector sensor module, it makes a small vibration. These vibrations are very faint. When a raindrop lands, it causes these vibrations.

The vibrations put stress on the piezoelectric material in the sensor. This stress causes the piezoelectric effect, which makes an electric charge. This process turns the energy from the raindrop into an electrical signal.

Features:

High accuracy: We can measure how hard and how often raindrops fall. This helps us calculate rainfall correctly.

High sensitivity: Small raindrops can create strong electrical signals. This helps measure light rain and small amounts of rain.

Fast response: It can monitor the change of rainfall in real time, and the response speed is fast, which can provide timely rainfall sensor data.

High reliability: it has no moving parts, is not likely to wear out or get damaged, and lasts a long time.

piezoelectric rain gauge
CDQ-X100 Piezoelectric Type Rain

customer case

Monitoring environment:

We set up a weather station on the roof with a tripod. We use a metal rain sensor to collect rainfall near the house.

Rainfall resolution: 0.1 mm

Power supply: solar-powered

Data cycle: Upload every 15 minutes

Transmission mode: 4G. Data is sent to the CODA platform.

Monitoring environment

To see how rain affects the river level, we placed a piezoelectric rain water sensor on a pole by the river. We chose this spot carefully because it is the best place for accurate data collection.

Rainfall resolution: 0.2 mm

Power supply: solar-powered

Data cycle: Upload every 30 minutes

Transmission mode: RS485

Integration: Used for data analysis

Monitoring environment:

Put a rainwater sensor in the mountains. This will help you see how much rain falls over time.

Rainfall resolution: 0.2 mm

Power supply: solar-powered

Data cycle: Upload every 60 minutes

Transmission mode: 4G. Data is sent to the CODA platform.

Conclusion

In conclusion, rain gauge sensors are important in many areas like weather, farming, water management, and transport. As technology improves, these sensors will get better. Their uses will keep growing. We believe they will provide more convenience and benefits for many fields and for people’s daily lives.

In meteorological monitoring, CODA, with strong expertise and extensive experience, has developed various monitoring solutions for customers.

CODA provides suitable solutions for every situation. This covers complex cities, vast wilderness, farming’s precise needs, and special industries such as aerospace and shipping.

When it comes to monitoring weather in cities, we set up a lot of smart sensors. These sensors unceasingly gather crucial data, including temperature, humidity, air pressure, wind speed and direction, and air quality. This helps city planners and environmental protection workers prepare ahead of time for weather – related disasters and pollution problems. As a result, city dwellers can enjoy a better quality of life and stay safe.

In agriculture, our tailored weather monitoring plan precisely measures things like soil moisture, rainfall patterns, and sunlight levels. This scientific data helps farmers plan farming well. They can then decide the best ways to water and fertilize their crops.It helps make farming smarter and more productive.

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