Smart EV Charging Monitoring Using Waveshare 4G LTE Module & Industrial Display
Introduction
Electric Vehicle (EV) infrastructure is growing rapidly. Modern charging stations require real-time monitoring, remote management, and energy tracking.
In this project, we build a Smart EV Charging Station Monitoring System Using Waveshare 4G LTE Module that:
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- Monitors voltage & current
- Tracks energy consumption (kWh)
- Displays real-time charging data
- Sends cloud updates via 4G
- Triggers overload alerts
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All required components are available at: zbotic.
Why Use Waveshare Modules for EV Monitoring?
Waveshare industrial modules are ideal for IoT and energy monitoring because they offer:
✔ Industrial-grade build quality
✔ RS485 / Modbus compatibility
✔ 4G LTE connectivity
✔ Reliable Linux & embedded support
✔ Professional display solutions
Perfect for EV startups and industrial automation.
Hardware Required for Smart EV Charging Monitoring System
You can internally link these products:
👉 Raspberry Pi 4 Model B
👉Waveshare 4G LTE Cat-4 Module (SIM7600 Series)
👉Waveshare 7-inch HDMI Capacitive Touch Display
👉Waveshare RS485 to TTL Module
👉Industrial Energy Meter (Modbus Supported)
👉Current Transformer (CT Sensor) / ACS712 Sensor.
System Architecture
Step 1 – Data Collection
Energy meter reads:
- Voltage (V)
- Current (A)
- Power (W)
- Energy (kWh)
Communication via Modbus RS485.
Step 2 – Processing
Raspberry Pi reads Modbus data through:
Waveshare RS485 module.
Official Modbus reference:
https://modbus.org/
Step 3 – Local Display Dashboard
Real-time dashboard displayed on:
Waveshare 7-inch HDMI Touch Display.
Dashboard shows:
- Charging status
- Voltage
- Current
- Energy consumption
- Charging time
Step 4 – Cloud Transmission via 4G LTE
Waveshare 4G LTE module sends data to:
- MQTT broker
- ThingsBoard
- AWS IoT
- Custom cloud server
MQTT reference:
https://mqtt.org/
Step 5 – Alert System
If voltage/current exceeds threshold:
- Trigger buzzer
- Send SMS alert
- Send cloud notification
- Disable relay output
Basic Python Code Logic (Modbus + MQTT)
import minimalmodbus
import serial
import paho.mqtt.client as mqtt
instrument = minimalmodbus.Instrument('/dev/ttyUSB0', 1)
instrument.serial.baudrate = 9600
voltage = instrument.read_register(0)
current = instrument.read_register(1)
power = instrument.read_register(2)
client = mqtt.Client()
client.connect("broker.hivemq.com", 1883, 60)
data = f"Voltage:{voltage}, Current:{current}, Power:{power}"
client.publish("ev/charging/data", data)
print("Data Sent:", data)
Install required libraries:
pip3 install minimalmodbus
pip3 install paho-mqtt
Real-World Applications
• Public EV Charging Stations
• Apartment EV Parking Systems
• Solar Charging Units
• Smart City Infrastructure
• Industrial Fleet Charging Systems
Advanced Upgrade Ideas
✔ QR-code based payment integration
✔ Load balancing system
✔ Mobile app dashboard
✔ AI-based predictive maintenance
✔ OCPP protocol integration
Why This Project Is Valuable for Zbotic Customers?
This project promotes:
- Waveshare 4G LTE modules
- Industrial RS485 modules
- Touch displays
- Raspberry Pi boards
- Energy monitoring hardware
It encourages:
✔ Institutional orders
✔ Startup hardware purchases
✔ Industrial buyers
Frequently Asked Questions (FAQs)
1️⃣ What is a Smart EV Charging Monitoring System?
It is an IoT-based system that monitors voltage, current, and energy consumption of EV charging stations in real-time.
2️⃣ Why use Waveshare 4G LTE module?
Waveshare 4G LTE modules allow remote monitoring even in areas without WiFi, making them ideal for outdoor EV stations.
3️⃣ Can this system work without internet?
Yes, local monitoring via display works without internet. However, cloud monitoring requires 4G or WiFi connectivity.
4️⃣ What communication protocol is used?
This system uses:
- Modbus (RS485)
- MQTT (for cloud transmission)
5️⃣ Is this suitable for final-year engineering projects?
Yes. This project demonstrates:
- Industrial IoT
- Cloud integration
- Real-time data monitoring
- Embedded systems
6️⃣ Can it support multiple charging points?
Yes, by using multiple Modbus device IDs and expanding the dashboard.
7️⃣ Where can I buy genuine Waveshare industrial modules in India?
You can purchase authentic Waveshare modules from:
Zbotic provides fast shipping, bulk support, and technical assistance.
Final Thoughts
If you’re building:
- EV infrastructure
- Smart city solutions
- Industrial IoT platforms
Then a Smart EV Charging Monitoring System Using Waveshare Modules is a future-ready innovation.
Start building with genuine hardware from Zbotic today.
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