Real-time railway structural health monitor powered by piezoelectric energy harvesting
Live Cloud Feed
Connecting… polling /api/latest.php · every 2 s
Field-validated r=0.87 30-day correlation 568 mW/unit peak Dual-IMU + thermal
Waiting for Sensor Node
PiezoRail gateway is listening on ESP-NOW · no packets received yet
?Checking piezorail.online server…
iFor local access connect to WiFi PiezoRail-v5 → 192.168.4.1
?Node transmitting — unknown until first packet arrives
iVerify ESP-NOW channel at 192.168.4.1/channel
Real-time Data Input
Live data source for entire dashboard · select mode below
SIMULATION
MANUAL
SERIAL USB
WiFi/HTTP
MQTT
🎛 Manual Data Trigger
Click any button below to inject test data

Live Track Monitor

Yogyakarta — Klaten KRL Line · Lempuyangan Station · 8 dual-IMU sensor units · 8 segments
AI System Summary
Initializing system summary…
Average Node Live Data Feed
Real-time averages across all active sensor nodes
Vibration
--g
MPU6050 lateral amplitude · Limit 0.80 g
Energy
--mWh
½ × 1F × V² · avg stored per node
Temperature
--°C
DS18B20 rail temperature · Limit 90 °C
Signal
--dBm
ESP-NOW RSSI average across nodes
Real-time Power Output
—mW
▲ +18% vs 7-day avg
Energy Stored Today
—kWh
▲ 76% of daily target
Active Sensors
—/ 8
— initializing
Trains Today
—
▲ +12 from yesterday
Rail Track Visualization
8 dual-IMU units · ESP32-C6 transmitters → ESP32-S3 gateway
SEG ASEG B SEG CSEG D SEG ESEG F SEG GSEG H ⬌ KM 6.945 · BIDIRECTIONAL TRACK ◀ LEMPUYANGAN START MAGUWO ▶ END ▶ KRL
Active
Warning
Error
Offline
▲ L (top rail) · ▼ R (bottom rail)
Energy Flow
Piezoelectric → LTC3588-1 → Supercap
Vibration
5.8 Hz
→
Conversion
3.3 V
→
Storage
1.0 F
Resonance
5.8 Hz
Peak (today)
568 mW
Efficiency
72.4%
Cap Charge
88%
0
Last Train Speed
—km/h
Avg today: — · Trains: 0
Power Output — Rolling 60s Window
Real-time aggregate from all 8 sensor units · 1 Hz update
Sensor Status
8 dual-IMU units · ESP32-C6 transmitters · ESP-NOW
Live Event Log
Real-time event stream
Raw Data Stream
JSON payload from ESP-NOW · received by ESP32-S3 gateway
Geographic Track Map
Lempuyangan → Maguwo · KRL Yogyakarta–Klaten · real GPS coordinates
Loading Leaflet.js...

Live Sensors

Real-time IMU · DS18B20 temperature · supercap · per-node cloud data from piezorail.online
Waiting for cloud data…
MPU6050 — Accel + Gyro
I²C 0x68 · ±2g accel · ±250°/s gyro · 16-bit resolution
Accel X
--g
Accel Y
--g
Accel Z
--g
Gyro X
--°/s
Gyro Y
--°/s
|a| Lateral
--g
Lateral vibration = √(ax²+ay²) · Threshold: 0.80 g
ADXL345 — High-G Shock
I²C 0x53 · ±16g full-res · 13-bit · shock & motion detection
Accel X
--g
Accel Y
--g
Accel Z
--g
|a| Total Shock Magnitude
--g
Shock magnitude = √(ax²+ay²+az²) · Threshold: 2.50 g
DS18B20 — Rail Temperature
1-Wire · 9-bit · 0.5 °C resolution · anomaly threshold 75 °C
Rail Temp
--
°C
% of threshold (75 °C limit)
-- of limit
Analytics Suite
Advanced Analysis Tools
Additional monitoring and visualization pages
05MODULES

Real-time Monitor

Multi-parameter rail structure monitoring · vibration · temperature · energy harvest
Vibration RMS
Aggregate · 60s rolling
0.62 g RMS ▲ 4.2%
Rail Temperature
DS18B20 mean · 60s rolling
31.2 °C — stable
Energy Harvest
Power output · 60s rolling
423 mW ▲ 18%
Per-Segment Detail
Click a segment to overlay its data on the charts above · 8 segments
SegmentSensorsAvg PowerVibrationTempHealthLast EventStatus
Anomaly Detection · 24h Timeline
All events plotted by timestamp
Train pass
Warning
Anomaly
Detection Summary
Last 24h breakdown

AI-Powered Insights

Intelligent analysis of each rail segment based on multi-parameter sensor data
SYSTEM OPERATIONAL
AI confidence: 94% · Last analysis: just now
Priority Recommendations
AI-suggested actions sorted by urgency
Per-Segment Analysis
8 segments analyzed
Predictive Trend Analysis
7-day projection · solid=actual · dashed=forecast

Sensor Management

8 sensor units · dual MPU6050+ADXL345 · status · calibration · firmware · maintenance
Active
12
healthy & reporting
Warning
2
drift / packet loss
Error
0
requires inspection
Avg RSSI
-54dBm
good signal quality
Search:
Status:
Segment:
Sort:
8 of 8 units
IDIMU SetNameSegment Power (mW)Vibration (g) Temp (°C)RSSI FirmwareLast SeenStatusMaintenance Actions

Reports & Analytics

Historical performance · daily/weekly/monthly summaries · export to PDF, CSV, JSON
Date Range
Showing: Today · 23 events recorded
TODAY
7 DAYS
30 DAYS
90 DAYS
Daily Energy Production
kWh harvested · last 14 days
Train Pass Heatmap
Density per hour · last 7 days
Energy Production Heatmap — Per Segment × Hour
Avg power harvest (mW) · 8 segments × 24 hours · darker = higher harvest
0 mW
578 mW Hover any cell for detail · Click to deep-dive
Generated Reports
Recent reports · click row to download
Report IDTypeDate RangeGeneratedSizeFormatActions

System

Cloud connection · gateway status · packet statistics · settings & configuration
Cloud Connection & Gateway Status
piezorail.online · real-time gateway → cloud data pipeline
Server Status
—
Polling /api/latest.php every 2 s
Active Nodes
—
No nodes seen yet
Last Update
—
piezorail.online/api/latest.php
Node Selector
Waiting for cloud data…
⚠ Alert Thresholds — Per Parameter
Parameter Min Value Max Value Unit Action on Breach
Power Output
LTC3588-1 output
 mW WARN + LOG
Vibration RMS
Accelerometer g-force
 g RMS ALERT + NOTIFY
Rail Temperature
DS18B20 sensor
 °C WARN + LOG
Signal Strength
ESP-NOW RSSI
 dBm WARN + LOG
Packet Loss
ESP-NOW reliability
 % ALERT + NOTIFY
Capacitor Voltage
Supercap charge level
 V WARN + LOG
🔌 Connection Settings
Serial Baud Rate
ESP32-S3 UART speed
HTTP Poll Interval
How often to fetch WiFi data
HTTP Endpoint URL
ESP32-S3 web server address
Serial Status
Web Serial API connection
Disconnected
HTTP Status
WiFi polling connection
Disconnected
🔔 Notifications & Display
Browser Notifications
Push alert when threshold breached
Sound Alerts
Beep on critical threshold breach
Train Pass Alert
Notify on every detected train pass
Theme
Dark (default) or Light mode
Language
Dashboard display language
Simulation Speed
Tick interval when in simulation mode
📡 Gateway Information
GATEWAY CHIP
ESP32-S3
PROTOCOL
ESP-NOW
SENSOR NODES
8 × XIAO ESP32-C6 · dual-IMU
FIRMWARE
v5.0
LOCATION
Lempuyangan Station
TRACK LINE
Yogyakarta – Klaten KRL
TRANSDUCER
Piezoelectric + LTC3588-1
DASHBOARD VER
v5 · Jun 2026

Waveform & FFT Analyzer

Oscilloscope · FFT spectrum analyzer · 5–7 Hz piezo resonance band
Oscilloscope — Live Waveform
Piezo signal · real or simulated · scrolling 200ms/div
FREQ: — Hz
AMP: — mV
200 ms/div
200ms
500mV
FFT Spectrum Analyzer
0–32 Hz · piezo resonance band 5–7 Hz highlighted
PEAK: — Hz
SNR: — dB
BAND: 5–7 Hz
Frequency Band Analysis
Harmonic decomposition · auto-detect piezo resonance peak
Frequency BandRangeMagnitude% of TotalInterpretation

3D Rail Track Visualization

Interactive 3D scene · Three.js · drag to orbit · scroll to zoom
Loading Three.js renderer...
3D CONTROLS
🖱 Drag — orbit camera
🖱 Right-drag — pan
🖲 Scroll — zoom
SCENE
8 units · 2 rails · 8 segments
📍 Camera: 0, 30, 80
🚆 Train: Idle
View Presets
Scene Settings
Scene Info
Renderer: WebGL · Three.js
Geometry: 2 rails + 8 segments + 8 dual-IMU units
Lighting: Ambient + directional
FPS target: 60
Track scale: 1 unit = 100 m
⚡ PIEZORAIL · LIVE MONITOR
Lempuyangan Station · Yogyakarta–Klaten KRL
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