Indoor Environment Monitoring

Summary

Connectivity: Ethernet and 433MHz
MCU: Arm Cortex M3, 96MHz
Memory: 512KB Flash, 32KB RAM
Silicon vendor: NXP

Sector: Connected Spaces

The Purrmetrix connected sensors allow facilities managers to measure environmental factors such as humidity, light levels, CO2 and occupancy. This links to a web service that offers real-time insights, alerts and reports relating to building performance.

Facilities managers can proactively identify problems and take remedial action to improve the working environment, providing significant improvements in staff productivity and energy efficiency. The system can easily be retrofitted to existing offices, data centres and public buildings and offers precision monitoring for agricultural facilities.

Extremely quick development with minimal resource

Broad feature-set offered by Mbed

Gateways utilized Mbed online compiler and offline tool chains

“Our development team consisted of 1 full-time engineer for a duration of less than 2 years. The initial proof of concept was based on a non-Arm based microcontroller MCU but didn’t offer adequate security for deployments throughout professional workspaces so we decided to migrate to an Mbed OS based chipset for convenience and enhanced features.” Ed Colby, CEO- Purrmetrix

Specification

Radio Equipment Directive (RED) certified

433MHz proprietary radio connectivity between sensors and gateway with a typical range of 30 meters in an office

Sensors typically last for 3-5 years with regular updates to the server every 10-15 seconds

Based on the LPC1768 MCU

Arm Cortex-M3 up to 96MHz

512KB Flash, 32KB RAM

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Indoor Environment Monitoring

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