Control & Measurement
Smart Telemetry System
A platform for temperature, airflow, product-weight and current monitoring, with automatic operation and MQTT remote control over Wi-Fi or LTE.
- Multi-sensor control + MQTT
- Industrial IoT
- Wi-Fi
- LTE
- MQTT
PT1000 + LoRaWAN + RS485
LoRa Precision Temperature Sensor
A PT1000 temperature-measurement platform with local storage, LoRaWAN communication and RS485 for wired integration.
Overview
This battery-powered temperature-measurement platform combines a PT1000 measurement circuit with local memory and wireless data transmission. Measurements can be stored in flash and communicated through the LoRa/LoRaWAN subsystem.
- Control & Measurement
- Temperature Sensing
- PT1000
- LoRaWAN
- RS485
An RS485 interface supports wired integration, and an opto-relay provides a controllable output.
Challenge
Integrate temperature measurement, local data retention and remote communication on a compact board. The design also needs a wired interface for installations that require an alternative connection to the surrounding equipment.
What We Did
HTS developed the measurement and communication electronics around a PT1000 sensing circuit and RAK3172 LoRa module. The board brings together the measurement controller, flash memory, RS485 driver, opto-relay and battery-powered architecture.
System
| Subsystem | Function |
|---|---|
| PT1000 and measurement controller | Acquire temperature measurements. |
| Flash memory | Store measurement data locally. |
| RAK3172 and LoRa antenna | Provide wireless measurement-data communication. |
| RS485 driver | Support wired communication with external equipment. |
| Opto-relay | Provide an electrically isolated switching interface. |
Technical Details
| Parameter | Specification |
|---|---|
| Board dimensions | 90 × 50 mm |
| Temperature sensing | PT1000 |
| Wireless module | RAK3172 |
| Wireless communication | LoRa / LoRaWAN |
| Wired interface | RS485 |
| Storage | Flash memory |
| Control output | Opto-relay |
| Power | Battery |
Result
The resulting platform brings PT1000 measurement, local storage and both wired and wireless communication into one board. It supports temperature-monitoring applications that need measurements to be available beyond the sensing point.
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