Indeema
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Building equipment / Lift energy and usage monitoring

Lift Monitoring System Development: Energy, Trips And Downtime In A Web Portal

Motor-room device and web portal that report lift energy use, trips and out-of-service periods.

Black LiftEnergy+ monitoring box with status LEDs, a monitor showing monthly lift energy consumption bars and a table of starts and kWh, and a phone showing an installation checklist.

The opportunity

A new service for lift clients

The Lift Consultancy wanted to show clients how much energy their lifts use, how they are used and when they are out of service, from data recorded in real time.

The solution

Device, cloud and portal

Indeema built a motor-room device next to a three-phase meter, a connection through AWS IoT Core and a per-lift web portal.

  1. 01Energy meter
  2. 02Motor-room device
  3. 03LTE or Wi-Fi
  4. 04AWS IoT Core
  5. 05Web portal
Line drawing of a lift car and motor room with the monitoring device on the wall, connected through a cloud to the LiftEnergy+ portal on a monitor and a phone.

The impact

What changed for The Lift Consultancy

  • A service conceptA working monitoring system
  • Lift use not visibleEnergy, trips and downtime per lift
  • No remote updatesRemote firmware updates

Out-of-service logging needs the device wired to the control panel's out-of-service signal.

Engineering judgement

Decisions that shaped the product

Validate trip detection first

A proof of concept on a power meter and AWS IoT Core tested trip detection from current readings before the full device was specified.

Adaptive trip thresholds

Threshold-correction algorithms analyse each lift's operating characteristics and adjust the trip-detection thresholds for that lift.

Two connectivity paths

An integrated module combining a Wi-Fi MCU and an LTE modem gives the device alternative connectivity options; OTA updates work over both.

Compress and batch uploads

Data compression and batching reduce the volume transmitted from each device.

Built with

ESP32 · FreeRTOS · ESP-IDF · C/C++ · PlatformIO · KiCad · RS-485 · Modbus

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A comparable product problem?

LiftEnergy+ lift energy and trip monitoring

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