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Case Study

Smart Water Meter


Company needed to build complete solution for the  homeowner to control the water inlet, leak detection and  remote valve control

Project Period : 6 Months
Team Size : 10 members
Protocols Used: Thread, MQTT, 6LowPan

 

 
 

Challenge

  • The water meter provides monitoring of the primary inlet 
  • Interoperate with thread devices and Nest ecosystem

Outcome

  • Used Off the shelf components to realize the Gateway – Link7688
  • Silabs MCU EM358x used for end node realization
  • Cloud and Mobile App implementation for the watermeter solution
 


atermeter – Data Flow Diagram

 
WHAT DID GADGEON DO? PLATFORMS/TOOLS/TECHNOLOGIES USED
1) Architecture for complete system including ZigBee based end node,  ZigBee Hub, Gateway, Cloud and Mobile App Requirements Gathering & Analysis, Uses cases, Architecture  development, identification of functional components.
2) Hardware design, prototyping, boardbring up for ZigBee based end  node and Hub Cadence allegro, optimized for battery powered operation,
3) Linux Gateway Off-the-shelf Hardware (beaglebone Black) was used with the Linux  application(cpp), Silicon labs radio chip for Thread protocol, MQTT to  connect to the server.
 
4) Cloud server Express framework based node.js REST API server, AWS RDS database,    MongoDB  and AWS S3 for storage, sms notifications using Twilio server, push notifications  via Google Cloud Messaging and Apple Push Notification Service, eMail using  SMTP server.
AWS platform for hosting the cloud server:
Mosquito MQTT broker
5) Mobile App design and development for controlling and managing  the watermeter MVC architecture, encrypted databases, realtime notifications using
MQTT & GCM, REST API based alert generation, Followed the recommended  design patterns from Apple and Google.
 

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