| I&T Solution |
Battery-free IoT Sensor Technology for Outdoor Application
(REF: S-1289) |
| Trial Project |
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| Solution Feature |
- Bi-directional antenna design will be employed to maximize the collection of available ambient RF power in an outdoor environment.
- Dual polarized antenna design will be adopted to alleviate the polarization mismatch of incoming RF signals.
- The system supports multiple bands. Ambient RF signal strengths across different frequencies can vary significantly at different locations. Multiband antennas and rectifiers will be developed to enhance the compatibility of the system.
- Low duty cycle and low power wireless sensors can be powered up by outdoor ambient RF signals only. Weatherproof design will be taken into consideration.
- Sensor data can be uploaded to the Government-Wide IoT Network (GWIN) via a gateway to interchange wireless protocols.
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| Trial Application and Expected Outcome |
- The system is able to harvest both horizontally and vertically polarized ambient RF signals from both front and back sides simultaneously.
- Target volume of the system is less than 300 x 300 x 80 mm3, excluding the waterproof box.
- At least three downlink frequency bands of mobile services in Hong Kong will be covered by the system.
- Target environmental data collection frequency is 1~4 times a day.
- The system comes with a weatherproof design which is applicable for outdoor installation.
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| Info on I&T Solution Provider |
| Solution Provider | : | Department of Electronic & Computer Engineering | | Address | : | Clear Water Bay, Kowloon, Hong Kong | | Contact Person | : | Ross Murch |
| Position | : | Chair Professor | | Tel | : | (852) 2358 7044 | | Email | : |
eermurch@ust.hk | | Webpage | : | https://eermurch.home.ece.ust.hk/ |
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