Monitoring stations and the data acquisition network
Sensors connect to XiltriX monitoring stations, which read every sensor multiple times per minute and pass the values to the server over a wired RS-485 bus, a 434 MHz wireless link or your LAN. Every station has its own backup battery and reports mains failure, so the chain keeps measuring and alarming when the power does not.
Cet article technique est publié en anglais.
The principle
XiltriX measures, evaluates and stores physical parameters through a real-time network of analogue and digital sensors. Every connected sensor is read several times per minute. The values are digitised, stored on the server and continuously compared against the alarm limits set for that device. When a value moves out of bounds, the alarm chain starts on its own.
XiltriX designs and builds its own hardware. That is why every station can read different sensor types in real time and still carry a large backup battery: when everything else fails, the monitoring keeps working and can still raise the alarm. Every station monitors mains power, so you learn that damage is coming rather than that it has happened.
The monitoring stations
| Station | Connection | Inputs | Outputs |
|---|---|---|---|
| Calypso | Customer LAN; bridges to the wired bus and the wireless band | Communication device with battery backup | Watchdog relay plus 4 free relays for alarm devices or a BMS |
| Titan | Hard-wired RS-485 bus to the Calypso | 4 × PT100 or 4-20 mA, plus 4 digital status inputs | 3 open-collector outputs and 1 relay |
| Telesto | Wireless, 434 MHz, four sub-bands for coverage | 2 × PT100 or 4-20 mA, plus 4 digital status inputs | Can also bridge wired Titans into the network |
| Tethys | Direct network connection where no bus or wireless reaches | 2 × PT100 or 4-20 mA, plus 2 digital status inputs | 3 open-collector outputs and 1 relay |
The 434 MHz band was chosen deliberately: it penetrates building structures far better than the crowded 2.4 GHz band, and it can be split into four sub-bands so a large site keeps clean coverage. A special Calypso variant connects digitally to Lighthouse particle counters.
The CO₂ and O₂ sampling station
The CO₂/O₂ monitoring station measures gas without placing a sensor inside the incubator. A small gas sample from up to 16 incubators is drawn out and analysed by one central CO₂ or O₂ sensor. Nothing sits in the chamber, so there is no cross-contamination risk and high-temperature decontamination stays simple.
Zero and span calibration is built in, so the single sensor stays accurate and corrects itself as conditions change. For IVF and GMP labs running many box incubators this is both the cleanest and the cheapest arrangement.
What your IT department needs to know
- The Calypso sits on your LAN; the sensor network behind it is XiltriX hardware and does not touch your network.
- Every station holds a backup battery, so a power cut does not create a blind spot.
- Relay and open-collector outputs allow integration with building management systems and existing alarm infrastructure.
- Where a site cannot be wired, wireless stations cover it; where wireless will not reach, a directly connected station does.
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