Industrial weighing
In-motion weighing controller
- Our scope
- Hardware, firmware and software
- Outcome
- Field-deployed in weighbridges and in-line checkweighers, with event-wise readout in the cloud.
Case study · Wireless automation
Wireless automation hardware: a coin-cell transmitter and a 24 V, 10 A receiver
A three-board wireless product: a long-range transmitter that runs on a coin cell, paired with receiver hardware that switches 24 V loads at up to 10 A.
- Our scope
- Hardware, firmware, bring-up
- Boards
- Three PCBs
- Radio
- 433 MHz, proprietary protocol
- Load
- 24 V, up to 10 A
Application and problem
The requirement was a compact transmitter with an onboard antenna that runs from a coin cell and still reaches a long range, paired with receiver-side hardware that controls a 24 V load at up to 10 A.
The receiver had to be protected against reverse connection and overload.
Constraints
What the design had to accommodate, as recorded for the project.
- Coin-cell power for the transmitter
- An onboard antenna on a compact board
- Long range from a low-power transmitter
- A 24 V, 10 A load path on the receiver, protected against reverse connection and overload
Our scope
- Compact wireless boards and the long-range RF section
- Receiver-side power hardware and protection circuits
- Firmware and bring-up
Delivered by our engineering team. The client’s name is withheld for confidentiality; references are available on request. Some customer projects are contracted through our sister company, which the same team runs (see About).
Architecture
- TransmitterCompact coin-cell boardOnboard antenna · long-range design
- LinkProprietary 433 MHz protocolOptions: power-line communication, or Wi-Fi using embedded controllers
- ReceiverLoad-control hardwareSwitches 24 V loads at up to 10 A
- ProtectionOn the receiver power pathReverse-connection and overload protection
Engineering decisions
Design choices recorded for this project, and what each one provides.
| Design choice | What it provides |
|---|---|
| A proprietary 433 MHz protocol | The link between transmitter and receiver uses its own protocol rather than a standard network. |
| Onboard antenna on the transmitter | No external antenna on the coin-cell board. |
| Protection on the receiver power path | Reverse-connection and overload protection on the 24 V, 10 A side. |
| Other link options | Power-line communication and Wi-Fi using embedded controllers are options of the same product family. |
Validation performed
- Bring-up of the transmitter and receiver boards
Measured results from this project are not published.
Documented outcome
Delivered: the compact wireless boards, the long-range RF section, the receiver-side power hardware and protection circuits, with firmware and bring-up.
Related
Services used on this project
Other case studies
Industrial inspection
Inspection system controller and operator software
- Our scope
- PLC hardware, control firmware, operator software
- Outcome
- Deployed in India: one team for the PLC hardware, control logic and operator software.
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