Suggest the best way to transfer analog sensor signal into digital signal and send to cloud or to local computer to store for later access
- État: Closed
- Prix: $250
- Propositions reçues: 5
- Gagnant: verosys
Résumé de concours
We're currently building a large system for inventory monitoring and for generating purchase orders. The system employs load cells which measure weight of items placed on them. The items will be permanently placed on the scales. The scales will be designed to "power off" in order to conserve electrical power. Several times each day, the scales will "wake up" and send weight data to a local computer or to the cloud . We will use up to 10000 scales for this project.
This contest addresses the electronics design part of this system (wiring, powering, AD conversion, data transmission, etc...). The contest is designed to gather suggestions on the most reliable way, and least expensive way to build this system. Suggestions must be accompanied by wiring diagrams and an explanation why the suggestion meets the stated criteria. The winner will be asked to provide detailed wiring diagrams and part numbers of items used in the suggestion. Freelancers who do not care to participate fully in this contest are encouraged to critique entries and to provide partial ideas and suggestions on how to approach a specific aspect of this design. The project will be posted to Freelancer for design later. All participants will be specially invited to bid, and will receive priority consideration.
Please view 3 attached sheets.
One sheet contains additional specification (if you think that a specification is not a good one, please feel free to suggest a change).
The other 2 sheet contain concept diagrams showing some of our ideas. We have those idea as evident from the diagrams. We think that our ideas "stink" and we need to know yours.
We reserve the right to cancel this contest if no or low qualified entrants participate.
Edits: I replaced old drawing containing 3 concept methods of system architecture and replaced with similar drawings but removed all reference to PLC to eliminate confusion.
Commentaire de l'employeur
“Freelancer came up with a unique and interesting solution to a very specific and challenging electronics issue. Seems to have extensive expertise in analog and digital electronics hardware and hardware design.”
freebird1974, United States.