Weather Stations in Kleve
Interactive Dashboards of Real-Time Weather Data
| WeatherStation Obstbaum-Arboretum | WeatherStation Rathaus |
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| Fig.: Interactive real-time data plots. Click on the image or here to open the Grafana dashboard. | Fig.: Interactive real-time data plots. Click on the image or here to open the Grafana dashboard. |
Weather-Station Obstbaum-Arboretum
The weather station consists of a Vaisala WXT536 multisensor, which can measure wind speed, wind direction, barometric pressure, air temperature, relative humidity and rainfall. Global radiation is measured by a Kipp & Zonen CMP3 pyranometer.
A raspberry pi zero is used to read the data from the weather station. From there the data is uploaded to a server running an influx database. The internet connection is provided by a Teltonica router using LTE.
A LoRaWAN Gateway is installed next to the station to provide access to The Things Network in the park.
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| Fig.: Weather station mounted on a pole at Forstgarten in Kleve |
Sensors of the Weather Station
| Sensor / Component | Physical Quantity / Function |
| Vaisala WXT536 | Temperature, Humidity, Barometric pressure, Wind speed / direction, Precipitation |
| Kipp & Zonen CMP3 pyranometer | Global radiation |
| Teltonika Router | |
| Raspberry Pi | |
| … | |
Data Flow (under construction)
Physical:
Vaisala Sensors → (RS485) → Raspberry Pi → (Ethernet) → Teltonika Router → (4G) → MQTT Broker (kleve.cool)
Logical:
Vaisala Sensors → (API) → Raspberry Pi (MQTT Publisher) → MQTT Broker (kleve.cool) → Node-Red (MQTT Subscriber) → InfluxDB → Grafana
Remarks:
Accessing the data
The data of our weather station is freely available through MQTT!
The accessible variables:
| Key | Unit | Comment |
| wind_dir_min | ° | |
| wind_dir_avg | ° | |
| wind_dir_max | ° | |
| wind_speed_min | m/s | |
| wind_speed_avg | m/s | |
| wind_speed_max | m/s | |
| temperature | °C | |
| humidity | % | |
| pressure | hPa | |
| rain_accumulation | mm | automatically reset after 100mm |
| rain_duration | s | |
| rain_intensity | mm/h | |
| hail_accumulation | hits | |
| hail_duration | s | |
| hail_intensity | hits/h | |
| solar_radiation | W/m² | |
More information about the measurements can be found in the datasheet: Vaisala WXT530 Series
| MQTT Broker and Topic |
| URL | kleve.cool |
| PORT | 1883 |
| TOPIC | weather/kleve/01 |
| USERNAME | weather-kleve-public |
| PASSWORD | IoTRocks |
Tests in the IoTLab
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| Fig.: First Test in the IOT-Lab with a USB-Connection |
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| Fig.: Reading the Data with the Vaisala Configuration Tool |
RS485
