Customer Background & Requirements

The customer required a universal and configurable data logging device for Electric Vehicle (EV) systems that can communicate with multiple OEM platforms. The system needed to support CAN and Modbus communication for data acquisition, provide real- time GPS tracking with 2.5 m accuracy, and enable remote monitoring through MQTT over GSM connectivity. The main objectives were to ensure accurate electrical data measurement, cloud-based analytics, and robust field operation under varying automotive and industrial environments.

Solution Provided by Electrobit Technology:

Electrobit Technology has designed and delivered a rugged and intelligent EV Logger that combines data acquisition, GPS tracking, and GSM-based cloud connectivity in one platform. The device communicates with EV systems via CAN and Modbus, collects voltage, current, power, and energy parameters, and transmits real-time data to the cloud through MQTT over GSM. It is fully configurable for multiple OEM systems, ensuring compatibility across various EV chargers and vehicle controllers.

Services Provided:

The project included end-to-end firmware design, hardware improvement, and system-level testing to meet customer-specific reliability and scalability needs.

EV Logger Firmware Development

  • Implemented a multi-protocol communication framework supporting CAN, Modbus RTU/TCP, and MQTT over GSM.
  • Developed real-time data acquisition and calibration algorithms for precise measurement of electrical parameters.
  • Integrated high-accuracy GPS module for real-time location tracking with ≤ 2.5 m precision.
  • Designed event-based and scheduled data logging with customizable intervals.
  • Implemented secure MQTT communication for cloud data transfer, and added SD card Storage for added backup logging and firmware update support via SD card.

Hardware Development

  • Improve power supply design for stable GSM and GPS operations.
  • Enhance analog sensing accuracy and signal conditioning circuit
  • Integrated isolated CAN and RS485 interfaces for OEM flexibility.
  • Optimized EMI/EMC performance for automotive-grade reliability.
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Challenges Overcome:

  • Managing simultaneous GSM data transmission and real-time data acquisition without packet loss.

  • Maintaining accurate GPS tracking during GSM communication activity.

  • Designing configurable firmware architecture for multiple OEM integration.

Technologies Used:

  • GSM (MQTT Cloud Communication)
  • CAN, Modbus RTU/TCP Protocols
  • High-Precision GPS (2.5 m)
  • SD Card Data Logging (FAT32)
  • ARM Cortex-M Platform
  • 12C, SPI, UART Interfaces
  • Secure Cloud Communication Stack

Industry Tagline:

EV Telematics | Industrial IoT | GSM-Based Data Logging | MQTT Cloud Integration | GPS Tracking | CAN Modbus Communication