Frequently asked questions
What range of particles can it measure?
The Swisens Poleno can measure PM1, PM2.5, PM10, and all particles up to a size of 300 μm.
What information do I obtain from the observed particles?
The Swisens Poleno provides a huge amount of information about each observed particle. Holographic images allow for analysis of the volume, size, and shape of each particle (double holographic image taken at 90°).
Fluorescence measurements provide a rich mosaic of information (fluorescence intensity and latency) about the properties of each particle.
This information is complemented by other data such as particle velocity and light polarization ratio.
How are particles classified and identified?
Using machine learning algorithms and neural networks, which are powered by the abundant information obtained from the different methods.
Algorithms make it possible to determine pollen types based on their morphology (digital holography) and their fluorescence properties (intensity and latency).
How can you tell what the system is measuring?
Each Swisens Pollen Detector has software connected to a database.
Recorded data can be accessed remotely using web interfaces such as the Swisens Data Explorer, allowing access to the observed data as well as various operating and diagnostic parameters.
How can new types of pollen or aerosols in general be detected?
To detect new types of particles in general, and pollen in particular, a prior sample is required.
This sample is nebulized by the Swisens Atomizer into the Swisens Pollen Detector. The observations are processed using image processing and clustering algorithms.
When required, manual validation of all holographic images obtained can be performed.
What is the difference compared to other technologies?
The main difference compared to other systems is the use of digital holography, which allows for manual validation (if desired) of the classification results. If fluorescence is also applied, more resources are available for the classification of pollen and other aerosols.
Based on the idea that each type of particle has specific properties (from a morphological and fluorescence perspective), the combined application of both techniques for aerosol typing is still a developing area with enormous potential.
What do I need for a sampling station?
The following are recommended:
- A space of approximately 200×200 mm
- Access to electricity (230 VAC / 50 Hz / 750 W) and grounding
- Internet access (3/4G or LAN-Ethernet coverage)
- Regular surface capable of supporting 130 kg (completely assembled equipment, including support structure).
- Site accessible by elevator, freight elevator, stairs, or truck-mounted crane.
Can multiple sampling stations be operated?
The solution is designed for observation at one or more stations, with a dedicated solution to centralize the information in a central station.
The central station allows remote consultation of the data observed at each sampling station.
This concept allows for the deployment of national, regional, and local observation networks for meteorological agencies, health services, research centers, etc.
