Wi-Node K
Self-powered wireless device with kinetic energy harvester for freight train pressure monitoring
Features and usage
- Freight train brake system pressure monitoring
- Weighing valve pressure for load monitoring
- Temperature monitoring
- Patented energy harvester generator (EU-USA-CN)
- Pressure sensor G1/4’’ 0-10 bar
- Wireless connection to Wi-Master or Wi-Node for data transfer
- Simple and cable-free installation on pipes or valves
- BLE, RF connection
- Kinetic energy harvester for self-powering of the node
- Minimum maintenance
Technical Specification
| RF | Sub-GHz radio transceiver (standard 868 MHz or 915 MHz) | Low power, high reliability and communication distance |
| Energy Harvester | Tunable frequency | Maximum power: 32mW @0.5g |
| Pressure sensor | I2C communication, G1/4’’ standard connector, Sampling up to 100 Hz | Measurement: 0-10 bar Failure pressure: 20 bar Consumption: 0.6 mA active, 0.1 μA sleep |
| Temperature sensor | Integrated with pressure sensor | Measurement: -40 to +85 °C |
| Auxiliary battery | Li-Ion rechargeable battery | Recharged by energy harvester |
| Microcontroller | Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3 | 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC |
