February 26, 2024

We are creating some awesome events for you. Kindly bear with us.

HKU engineering team develops multi-purpose IoT device

Image Credits: HKU, Press Release

A team led by Dr K.K.Y. Wong and Dr Y.K. Choi at the Department of Computer Science of the University of Hong Kong (HKU) has designed and developed a multi-purpose IoT (Internet of Things) device named Stay Alert Stay Healthy (SASH) box which can be applied in multiple scenarios, providing a one-stop service for the public eager to stay safe during the COVID-19 pandemic.

The SASH box is built on the low-cost Raspberry Pi 4 which provides the computation resources necessary for hosting a lightweight server application as well as analysing the incoming data from its attached sensors.

It can be used to detect people with abnormal body temperature, whether they are wearing a face mask or not. It can also crawl updated COVID-19 information (e.g., locations of confirmed cases and required self-isolation cases) from government open databases to provide timely references for the general public.

The SASH box is equipped with LEDs, a speaker, and a consumer-grade thermal camera, enabling it to alert people to potential risks in the environment. The research team developed application components to enable it to operate as a multi-function device and a low-cost and effective solution for corporate and individual use.

Unlike hybrid thermal camera devices commonly used in the market, the SASH box is equipped with a single thermal camera but not RGB cameras to avoid compromising privacy.  The team had collected and analysed over ten thousand thermal images and trained high-performance machine learning models to detect human faces with and without face masks using the low-resolution (120×160) thermal images captured from the device.

AI algorithms have also been developed for modulating detected temperatures to cater to temperature fluctuations in the surrounding environment and the hardware itself.

The SASH box is capable of retrieving up-to-date information, for example, COVID-19 cases, from online databases.  The team is now developing speech recognition and text-to-voice capabilities in the device to provide easy accessibility for elderly people and people who are visually impaired.

Apart from working as a standalone gadget, the SASH box can also serve as a server and host useful applications for connecting devices.  Users can easily retrieve information and monitor the environment in which a SASH box is located (e.g., households, classrooms, elderly homes, clinics, bus/taxi cabinets) in real-time by connecting their mobile devices such as smartphones or tablets from a remote site.

The design of the SASH box also allows ready scalability so that multiple devices can be connected to form a satellite network to facilitate sharing and monitoring of environmental data.

About HKU Faculty of Engineering

The Faculty of Engineering is one of the founding Faculties of The University of Hong Kong established in 1912. Since its foundation, the Faculty has kept pace with developments in the engineering world and is always at the forefront of engineering research, evolving into one of the largest Faculties at the University with five departments providing undergraduate, postgraduate and research degrees in a wide range of important fields of modern engineering, technology and computer science.

The Faculty aims at providing an all-round education for students, equipping graduates not only with knowledge of cutting-edge technology but also excellent communication and social skills, an innovation mindset, a lifelong learning attitude, professional integrity and international exposure.


Qlik’s vision is a data-literate world, where everyone can use data and analytics to improve decision-making and solve their most challenging problems. A private company, Qlik offers real-time data integration and analytics solutions, powered by Qlik Cloud, to close the gaps between data, insights and action. By transforming data into Active Intelligence, businesses can drive better decisions, improve revenue and profitability, and optimize customer relationships. Qlik serves more than 38,000 active customers in over 100 countries.


CTC Global Singapore, a premier end-to-end IT solutions provider, is a fully owned subsidiary of ITOCHU Techno-Solutions Corporation (CTC) and ITOCHU Corporation.

Since 1972, CTC has established itself as one of the country’s top IT solutions providers. With 50 years of experience, headed by an experienced management team and staffed by over 200 qualified IT professionals, we support organizations with integrated IT solutions expertise in Autonomous IT, Cyber Security, Digital Transformation, Enterprise Cloud Infrastructure, Workplace Modernization and Professional Services.

Well-known for our strengths in system integration and consultation, CTC Global proves to be the preferred IT outsourcing destination for organizations all over Singapore today.


Planview has one mission: to build the future of connected work. Our solutions enable organizations to connect the business from ideas to impact, empowering companies to accelerate the achievement of what matters most. Planview’s full spectrum of Portfolio Management and Work Management solutions creates an organizational focus on the strategic outcomes that matter and empowers teams to deliver their best work, no matter how they work. The comprehensive Planview platform and enterprise success model enables customers to deliver innovative, competitive products, services, and customer experiences. Headquartered in Austin, Texas, with locations around the world, Planview has more than 1,300 employees supporting 4,500 customers and 2.6 million users worldwide. For more information, visit www.planview.com.


SIRIM is a premier industrial research and technology organisation in Malaysia, wholly-owned by the Minister​ of Finance Incorporated. With over forty years of experience and expertise, SIRIM is mandated as the machinery for research and technology development, and the national champion of quality. SIRIM has always played a major role in the development of the country’s private sector. By tapping into our expertise and knowledge base, we focus on developing new technologies and improvements in the manufacturing, technology and services sectors. We nurture Small Medium Enterprises (SME) growth with solutions for technology penetration and upgrading, making it an ideal technology partner for SMEs.


HashiCorp provides infrastructure automation software for multi-cloud environments, enabling enterprises to unlock a common cloud operating model to provision, secure, connect, and run any application on any infrastructure. HashiCorp tools allow organizations to deliver applications faster by helping enterprises transition from manual processes and ITIL practices to self-service automation and DevOps practices. 


IBM is a leading global hybrid cloud and AI, and business services provider. We help clients in more than 175 countries capitalize on insights from their data, streamline business processes, reduce costs and gain the competitive edge in their industries. Nearly 3,000 government and corporate entities in critical infrastructure areas such as financial services, telecommunications and healthcare rely on IBM’s hybrid cloud platform and Red Hat OpenShift to affect their digital transformations quickly, efficiently and securely. IBM’s breakthrough innovations in AI, quantum computing, industry-specific cloud solutions and business services deliver open and flexible options to our clients. All of this is backed by IBM’s legendary commitment to trust, transparency, responsibility, inclusivity and service.

Send this to a friend