Dutch-based Jeng IoT recently released a new version of their ConTracker asset tracking solution. The new tracker includes an integrated solar panel (P134) which makes the device fully autonomous.
ConTracker Use Case
The ConTracker was developed with the recycling industry to help them manage large fleets of containers. Prior to using the ConTracker, the companies didn’t know the location of their containers.
Through a dashboard or API, Jeng provides accurate current and historical geographic location of large assets and delivers event notifications. Users can get alerted when devices move as expected or if there is suspicious activity. Often containers are rented out to a 3rd party, and separate views and permissions can be assigned to those customers.
System Design and Power Management
The solar panel is embedded just below the surface of an ABS enclosure using 3M’s VHB pressure activated tape. When light is available, it the panel charges an internal LiIon battery cell.
The tracker sends data over the cellular network using an NB-IoT modem. In order to preserve power, it sends less data when the system is static versus when it is moving and can stay indoors in a warehouse for up to two months without losing power.
One design element that we like is that the enclosure can be produced in any color to match the vehicle fleet. This makes the tracker blend in more easily.
Durable Solar Panel for Embedded Applications
Voltaic solar panels are designed for long term outdoor deployments. The material stack in the panel has been thoroughly qualified and passed a wide range of environmental, mechanical and immersion tests. In addition, the stack has been deployed in well over one million asset trackers since 2019. The objective is for the panel to last over ten years in most outdoor environments.
The tests include:
- accelerated UV well beyond IEC 61215
- TC50 thermal cycling
- 1,000 hours damp heat
- vibration and mechanical shock based on SAE J1455 and MIL-STD 810H
- IK08/IK09 referencing IEC 62262
- salt water immersion
- exposure to chemicals and oils
Leave a Reply