Internet of Things Applications
The rapid development of Internet of Things (IoT) requires a high level of communication technologies, in particular wireless communication technologies that are used to connect a vast number of IoT systems and have unique features of low power consumption, low bandwidth and long-distance coverage. Among the emerging technologies, the three major ones, namely LoRa, Sigfox and NB-IoT, have gradually matured. To support the building of a smart city and provide value-added services to clients, the EMSD has recently established a physical testing ground for conducting tests on the co-ordination, interference and network performance of wireless IoT technology.
In the past three months, the EMSD set up a LoRa-based wireless network infrastructure at its headquarters building. Different types of sensors were installed for testing the performance of these sensors and their batteries, as well as validating the accuracy of data collected. They included occupancy sensors and temperature and humidity sensors in conference rooms, light sensors in offices, and smart parking sensors in car parks. The test results are being evaluated. It is planned to utilise the data to develop smart car parks and meeting room reservation systems, which are expected to undergo testing in the middle of this year.
We will also work with other client departments to launch a LoRa-based wireless communication pilot programme in Sha Tin. Base stations have been built at selected locations to facilitate future installation and testing of suitable sensors for different application scenarios.
Besides LoRa, the EMSD will conduct further tests on Sigfox and NB-IoT technologies at the headquarters building so as to compare the strengths and weaknesses of different technologies, and get prepared for the extensive roll-out of IoT applications in the future.
Looking forward, we plan to build base stations at different client venues to collect sensor data. An IoT platform managed by the EMSD will also be established at our headquarters building to provide clients with data collected by the above three technologies for the purposes of application development and analysis.
If clients are interested to know more about or join the IoT trial project, please contact Mr. Steve Chan, Senior Engineer, at 2808 3593.