Monitoring Vibration Anomalies of an Electric Motor Pump

To detect abnormal vibration patterns in an electric motor pump for predictive maintenance, early fault detection, and downtime prevention, using the Dragino LHT65N-VIB LoRaWAN sensor.

Sensor Type: Temperature, humidity, and vibration
Vibration Detection: Based on internal MEMS accelerometer
LoRaWAN Support: Class A protocol
Battery Life: Up to 10 years (depending on settings)

Installation on Electric Motor Pump

Mounting the Sensor

To ensure accurate vibration monitoring, the sensor should be securely mounted to the motor housing or pump casing. It can be attached using industrial adhesive, screws, or mounting brackets, depending on the surface and environment. It’s important to maintain tight and stable contact between the sensor and the equipment to ensure effective transfer of vibration signals without dampening or loss of sensitivity.

Recommended placement: Near bearing housing or motor base

Network Configuration

LoRaWAN Setup

Register on your LoRaWAN Network Server (LNS) (e.g., TTN, ChirpStack, Helium) using the registration information (DevEUI, AppEUI, AppKey).
Configure:
- Uplink interval (e.g., every 5 min or event-based)
- Configure the senesor with the most appropriate vibration mode.
- <alarm_timeout> - indicates the number of seconds the vibration should continue before triggering the alarm.
- <stop_duration_time> - indicates when the vibration continues for more than x seconds, the vibration count will increase by 1

Gateway Connection

Ensure a LoRaWAN gateway is within range
Verify gateway is online and forwarding data

Data Monitoring & Analytics

Data Collected

Vibration status and vibration count
Temperature
Humidity

Use Case Logic

Normal Operation:

Vibration is detected consistently during normal motor operation

Anomaly Detection Scenarios:

Situation	Vibration Status	Action
Pump is on, but no vibration	Possible fault	Alert maintenance
Pump is off, but vibration detected	Unexpected movement	Investigate source
Irregular or unexpected vibration	Potential mechanical issue	Schedule inspection