Electronics for radiometric portals

O.E.M version

This unit, in the O.E.M version, directly manages the signals of six photomultipliers. The analog signals are managed by the LPST1 unit that provides the appropriate triggers to form the input pulses. The processor manages the inputs with a multiple acquisition of 1024 channels per input, counts the internal and external events of the windows of interest and communicates data to a remote PC. A proprietary protocol of the ON-Demand type is widely used in other instruments, including the aerospace ones (see LDB telemetry). The remote PC can also acquire information of the state of the card itself, power supply, temperature, state of the actuators as 8 digital inputs. The PC can control up to seven power relays, specifying their status and activation time. A later high-speed RS232 serial is dedicated for maintenance and inspection operations. There are available two 0-5V analog outputs and two 0-5V analog inputs. The card accepts a DC or AC power supply of 8 and 30 V. In the picture, the P6SPA card is configured with 3 photomultiplier inputs and two output relays.

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Shelter

The Shelter is the container designed to house the instrumentation for climate-environmental measurements and air quality and has a great resistance to atmospheric agents and can therefore be used in marine and remote areas. The electrical system is equipped with an inverter/charger which can be powered with photovoltaic panels and provides energy to the backup batteries.The high thermal isolation of the walls and the air conditioning system allow temperature control for optimal functioning of the instrumentation. The container is also equipped with a 4G modem to allow telemetry of the observatory's operating parameters and the sending of scientific data.

The Shelter can be supplied already equipped with ACTRISS compliant inlets for aerosols and gases of our production.

The Shelters in use:

I-Amica Environmental Climate Observatory of Capo Granitola (TP) (GAW Regional Station)

OpenLab Bologna At the ISAC-CNR headquarters
Po Valley Observatory in SanPietro Capfiume (Bo)
Shelter Capo Granitola
Shelter San Pietro Capofiume

CReM ( Continous Reflectance Monitor )


The Continous Reflectance Monitor, developed in collaboration with CNR-IIA, allows measuring the spectral ranges within visible and near-IR wavelength reflectance and the acquisition of NIR-GB images of the snow cover. The interaction between the light and the surface is controlled, in the visible and near infrared wavelengths, by the presence of impurities, by the size and shape of the grains and by the liquid water content. Exploring and investigating the relationship between the reflected light and the snow micro-physics, we can describe the extension of the snow cover, the beginning of the melt season and to study its surface microphysical properties.

Monitoring the snow surfaces is essential for climatic-environmental studies and can significantly help the characterization of environmental changes in time and space.

The Continous Reflectance Monitor has the following characteristics:
· Bi-hemispherical observation geometry with PTFE (Teflon) diffuser with Lambertian response.
· Silicon dome speaker cover.
· Two response channels in the SWIR with selected wavelengths to describe the optical behavior of the snow cover in the SWIR wavelength domain.
· Metal container with internal temperature stabilization system.
· Power input requiring 24V and 1,5A maximum POE type.
· RJ45 output for text file transfer with instrument output.
· Adjustable bracket anchoring system.

(italian)