Development of a Framework for the Communication System Based on KNX for an Interactive Space for UX Evaluation
Abstract
:1. Introduction
2. Background
2.1. Domotics
- Automation: the ability to accommodate automatic devices or perform automatic functions.
- Multi-functionality: the ability to perform several duties to generate several outcomes.
- Adaptability: the ability to adjust to inhabitants’ needs.
- Interactivity: the ability to interact with or allow interaction among inhabitants.
- Efficiency: the ability to perform functions in a time-saving, cost-saving, and convenient manner.
2.2. KNX Technology
2.3. Emotion Recognition
2.4. User Experience
2.5. Previous Work in Emotional Domotics
3. Methodology
3.1. The Testing Booth
- CO2 Multisensor CD 2178: Sensor to measure different variables within the testing booth. These variables are CO2 levels (parts per million—ppm), relative humidity (%), and temperature (degrees Celsius).
- Universal presence detector Jung 3361WW KNX: Sensor with a 360-degree detection angle divided into three 120-degree zones to measure light intensity (lux) inside the testing booth.
- 3902 REGHE—KNX 2 channel Universal Dimmer Actuator: This actuator allows changing the light intensity using dimming. The lamps that can be manipulated are incandescent lamps, 230 V halogen lamps, inductive transformers, inductive transformers with low-voltage LED, and dimmable compact fluorescent lamps.
- BX-DM01—Blumotix KNX: This actuator works as a dimmer for an RGB LED strip. It is a four-channel dimmer actuator that can be configured to work with LED strips of 12 to 24 V; each channel has an output of 4 A.
- ZN1CL-IRSC—Zenio KNX: This actuator is an infrared control module that allows us to control the air conditioner remotely by means of a series of previously programmed commands without the need to use a remote control. An important point is that the transmitter must be in the line of sight of the infrared receiver of the air conditioner. It has a voltage range of 21 to 31 VDC with a maximum consumption of 10 mA.
- 320 mA Power Supply—JUNG KNX: It supplies 320 mA and controls the system power for the KNX installation. The devices can be connected to that through the BUS line.
- Communication Module IP: The IP communication module allows access to the system via IP from any PC loaded with the ETS3 or higher or with a visualization software. It works in “Tunnelling” mode and offers up to 4 simultaneous KNXnet/IP connections.
3.2. Interpretation of the KNX Communication Protocol
- The monitoring is initialized to capture all data packets that belong to the KNXnet/IP protocol; other data packets are discarded.
- The connection is established with the KNX system to generate all the telegrams related to the connection request from the computer to the KNX IP BUS.
- Commands are sent to all sensors and actuators installed in the testing booth to register the generated telegrams.
- A command is sent to disconnect the computer from the KNX IP BUS and identify the telegram corresponding to this command.
- Monitoring is stopped since all necessary telegrams were captured.
- Header length: It indicates the start of the telegram, and it never varies.
- Protocol version: It indicates the version of the KNXnet/IP protocol that is being applied.
- KNXnet/IP service type identifier: It indicates the type of action that will be performed in the KNX installation.
- Total length: It indicates the number of bytes that the telegram contains.
- KNXnet/IP body: It contains all the necessary commands to do the requested action.
4. Proposed Framework for the Testing Booth Communication System
4.1. Interactive Space
4.2. Actuators
4.3. Sensors
4.4. Domotic Interface
4.5. Data
4.6. Processing
4.7. Application
5. Application of Proposed Framework for UX Analysis
5.1. Development of the Experimental Protocol
- First impression;
- Dosage measurement;
- Bottle’s grip;
- Spill prevention;
- Residue prevention.
5.2. Setup of the Testing Booth
5.3. Environment–User–Product Interaction Process
5.4. Data Post-Processing
5.5. Data Interpretation and Analysis
6. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Abbreviations
UX | User Experience |
ED | Emotional Domotics |
IoT | Internet of Things |
ETS | Engineering Tool Software |
ROI | Region of Interest |
AU | Action Unit |
CNN | Convolutional Neural Network |
SVM | Support Vector Machine |
EEG | Electroencephalography |
EMG | Electromyography |
GSR | Galvanic Skin Response |
PPG | Photoplethysmogram |
GUI | Graphical User Interface |
AI | Artificial Intelligence |
ML | Machine Learning |
References
- Miori, V.; Russo, D. Domotic Evolution towards the IoT. In Proceedings of the 2014 28th International Conference on Advanced Information Networking and Applications Workshops, Victoria, BC, Canada, 13–16 May 2014; pp. 809–814. [Google Scholar] [CrossRef]
- Nugent, C.D.; Finlay, D.D.; Fiorini, P.; Tsumaki, Y.; Prassler, E. Editorial Home Automation as a Means of Independent Living. IEEE Trans. Autom. Sci. Eng. 2008, 5, 1–9. [Google Scholar] [CrossRef]
- Monti, L.; Tse, R.; Tang, S.K.; Mirri, S.; Delnevo, G.; Maniezzo, V.; Salomoni, P. Edge-Based Transfer Learning for Classroom Occupancy Detection in a Smart Campus Context. Sensors 2022, 22, 3692. [Google Scholar] [CrossRef] [PubMed]
- Kuo, C.H.; Huang, F.G.; Wang, K.L.; Chen, H.W. Design and implementation of internet-based in-house healthcare and home automation systems. In Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, Washington, DC, USA, 8 October 2003; Volume 3, pp. 2944–2949. [Google Scholar] [CrossRef]
- Majidzadeh Gorjani, O.; Proto, A.; Vanus, J.; Bilik, P. Indirect Recognition of Predefined Human Activities. Sensors 2020, 20, 4829. [Google Scholar] [CrossRef] [PubMed]
- Wyon, D.; Wargocki, P. Room temperature effects on office work. Creat. Product. Workplace 2006, 11, 181–192. [Google Scholar]
- Custers, P.; De Kort, Y.; Ijsselsteijn, W.; Kruiff, M. Lighting in Retail Environments: Atmosphere perception in the real world. Light. Res. Technol. 2010, 42, 331–343. [Google Scholar] [CrossRef]
- Bellizzi, J.A.; Hite, R.E. Environmental color, consumer feelings, and purchase likelihood. Psychol. Mark. 1992, 9, 347–363. [Google Scholar] [CrossRef]
- Keegan, L. Alternative and complementary modalities for managing stress and anxiety. Crit. Care Nurse 2000, 20, 93–96. [Google Scholar] [CrossRef]
- Navarro-Tuch, S.A.; Bustamante-Bello, M.R.; Molina, A.; Izquierdo-Reyes, J.; Avila-Vazquez, R.; Pablos-Hach, J.L.; Gutiérrez-Martínez, Y. Inhabitable space control for the creation of healthy interactive spaces through emotional domotics. Int. J. Interact. Des. Manuf. (IJIDeM) 2018, 12, 1337–1347. [Google Scholar] [CrossRef]
- Navarro-Tuch, S.A. Emotional Domotics: Acquisition of an Equation for the Correlation of Emotional States and Environmental Variables through the Facial Expression Analysis of the User. Ph.D. Thesis, Insituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico, 2018. [Google Scholar]
- Leonidis, A.; Korozi, M.; Kouroumalis, V.; Poutouris, E.; Stefanidi, E.; Arampatzis, D.; Sykianaki, E.; Anyfantis, N.; Kalligiannakis, E.; Nicodemou, V.C.; et al. Ambient Intelligence in the Living Room. Sensors 2019, 19, 5011. [Google Scholar] [CrossRef]
- Leonidis, A.; Korozi, M.; Sykianaki, E.; Tsolakou, E.; Kouroumalis, V.; Ioannidi, D.; Stavridakis, A.; Antona, M.; Stephanidis, C. Improving Stress Management and Sleep Hygiene in Intelligent Homes. Sensors 2021, 21, 2398. [Google Scholar] [CrossRef]
- Sykianaki, E.; Leonidis, A.; Antona, M.; Stephanidis, C. CALMI: Stress management in intelligent homes. In Proceedings of the UbiComp/ISWC 2019—Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable Computers, London, UK, 9–13 September 2019; pp. 1202–1205. [Google Scholar] [CrossRef]
- Navarro-Tuch, S.A.; Lopez-Aguilar, A.A.; Bustamante-Bello, M.R.; Molina, A.; Izquierdo-Reyes, J.; Curiel Ramirez, L.A. Emotional domotics: A system and experimental model development for UX implementations. Int. J. Interact. Des. Manuf. (IJIDeM) 2019, 13, 1587–1601. [Google Scholar] [CrossRef]
- Gutierrez-Martinez, Y.; Navarro-Tuch, S.A.; Lopez-Aguilar, A.A.; Bustamante-Bello, M.R. Environmental Impact for Labor Stations Learning through Emotional Domotics Analysis and Workstation Simulation. In Proceedings of the 2018 International Conference on Mechatronics, Electronics and Automotive Engineering (ICMEAE), Cuernavaca, Mexico, 26–29 November 2018; pp. 124–128. [Google Scholar] [CrossRef]
- Lopez-Aguilar, A.A.; Bustamante-Bello, R.; Navarro-Tuch, S.A. Advanced system to measure UX in online learning environments. In Proceedings of the IEEE Global Engineering Education Conference, EDUCON, Vienna, Austria, 21–23 April 2021; pp. 774–777. [Google Scholar] [CrossRef]
- Cheng, F.; Yu, S.; Qin, S.; Chu, J.; Chen, J. User experience evaluation method based on online product reviews. J. Intell. Fuzzy Syst. 2021, 41, 1791–1805. [Google Scholar] [CrossRef]
- Bujdei, C.; Moraru, S.A. Ensuring comfort in office buildings: Designing a KNX monitoring and control system. In Proceedings of the Proceedings—2011 7th International Conference on Intelligent Environments, Nottingham, UK, 25–28 July 2011; pp. 222–229. [Google Scholar] [CrossRef]
- Lê, Q.; Nguyen, H.B.; Barnett, T. Smart Homes for Older People: Positive Aging in a Digital World. Future Internet 2012, 4, 607–617. [Google Scholar] [CrossRef]
- Lobaccaro, G.; Carlucci, S.; Löfström, E. A Review of Systems and Technologies for Smart Homes and Smart Grids. Energies 2016, 9, 348. [Google Scholar] [CrossRef]
- Miandashti, F.J.; Izadi, M.; Shirehjini, A.A.N.; Shirmohammadi, S. An Empirical Approach to Modeling User-System Interaction Conflicts in Smart Homes. IEEE Trans. Hum.-Mach. Syst. 2020, 50, 573–583. [Google Scholar] [CrossRef]
- Bissoli, A.; Lavino-Junior, D.; Sime, M.; Encarnação, L.; Bastos-Filho, T. A Human–Machine Interface Based on Eye Tracking for Controlling and Monitoring a Smart Home Using the Internet of Things. Sensors 2019, 19, 859. [Google Scholar] [CrossRef] [PubMed]
- Alowaidi, M. Fuzzy efficient energy algorithm in smart home environment using Internet of Things for renewable energy resources. Energy Rep. 2022, 8, 2462–2471. [Google Scholar] [CrossRef]
- Khan, Y.; Su’ud, M.B.M.; Alam, M.M.; Ahmad, S.F.; Salim, N.A.; Khan, N. Architectural Threats to Security and Privacy: A Challenge for Internet of Things (IoT) Applications. Electronics 2022, 12, 88. [Google Scholar] [CrossRef]
- Chamorro-Atalaya, O.; Quesquen-Porras, A.; Arce-Santillan, D. Lighting control network based on KNX protocol, for the reduction of energy consumption. Indones. J. Electr. Eng. Comput. Sci. 2020, 19, 1186–1193. [Google Scholar] [CrossRef]
- Toylan, M.Y.; Cetin, E. Design and application of a KNX-based home automation simulator for smart home system education. Comput. Appl. Eng. Educ. 2019, 27, 1465–1484. [Google Scholar] [CrossRef]
- ISO/IEC 14543-3-1; Information Technology Home Electronic Systems (HES) Architecture Part 3-1: Communication Layers. International Organization for Standardization: Geneva, Switzerland, 2006.
- CENELEC EN 50090; Home and Building Electronic Systems (HBES)—Part 1: Standardization Structure. European Committee for Electrotechnical Standardization: Brussels, Belgium, 2011.
- CEN-EN 13321-1; Open Data Communication in Building Automation, Controls and Building Management—Home and Building Electronic System—Part 1: Product and System Requirements. European Committee for Standardization: Brussels, Belgium, 2021.
- ANSI/ASHRAE135; A Data Communication Protocol for Building Automation and Control Networks. American National Standards Institute: Washington, DC, USA, 2018.
- GB/T 20965-2013; Control Network HBES Technical Specification—Home and Building Control System. National Standards of the People’s Republic of China: Beijing, China, 2013.
- Gökbayrak, A.B.; Kilivan, S.; Akin, S.; Çelebi, A.; Urhan, O. Wireless sensor network-based extension to KNX home automation system. Turk. J. Electr. Eng. Comput. Sci. 2016, 24, 3652–3663. [Google Scholar] [CrossRef]
- Merz, H.; Hansemann, T.; Hübner, C. Building Automation. In Signals and Communication Technology; Springer International Publishing: Cham, Switzerland, 2018; Volume 31, p. 20. [Google Scholar] [CrossRef]
- Lee, W.S.; Hong, S.H. KNX—Zigbee Gateway for Home Automation. In Proceedings of the 4th IEEE Conference on Automation Science and Engineering, CASE 2008, Arlington, VA, USA, 23–26 August 2008; pp. 750–755. [Google Scholar] [CrossRef]
- Lopez-Aguilar, A.A.; Bustamante-Bello, M.R.; Navarro-Tuch, S.A.; Ramirez-Mendoza, R.A. Communication system development for emotional domotics interactive space. Int. J. Interact. Des. Manuf. (IJIDeM) 2020, 14, 727–736. [Google Scholar] [CrossRef]
- Lopez-aguilar, A.A. Framework Development for the Communication System of an Interactive Space with Biometric Sensors for Emotion Recognition. Master’s Thesis, Instituto Tecnológico y de Estudios Superiores de Monterrey, Monterrey, Mexico, 2019. [Google Scholar]
- Siddiqui, H.U.R.; Shahzad, H.F.; Saleem, A.A.; Khan Khakwani, A.B.; Rustam, F.; Lee, E.; Ashraf, I.; Dudley, S. Respiration Based Non-Invasive Approach for Emotion Recognition Using Impulse Radio Ultra Wide Band Radar and Machine Learning. Sensors 2021, 21, 8336. [Google Scholar] [CrossRef] [PubMed]
- Shu, L.; Xie, J.; Yang, M.; Li, Z.; Li, Z.; Liao, D.; Xu, X.; Yang, X. A Review of Emotion Recognition Using Physiological Signals. Sensors 2018, 18, 2074. [Google Scholar] [CrossRef] [PubMed]
- Ekman, P. An Argument for Basic Emotions. Cogn. Emot. 1992, 6, 169–200. [Google Scholar] [CrossRef]
- Ekman, P.; Friesen, W.V. Constants across cultures in the face and emotion. J. Personal. Soc. Psychol. 1971, 17, 124–129. [Google Scholar] [CrossRef] [PubMed]
- Canedo, D.; Neves, A.J. Facial expression recognition using computer vision: A systematic review. Appl. Sci. 2019, 9, 4678. [Google Scholar] [CrossRef]
- Viola, P.; Jones, M.J. Robust Real-Time Face Detection. Int. J. Comput. Vis. 2004, 57, 137–154. [Google Scholar] [CrossRef]
- Sharma, S.; Shanmugasundaram, K.; Ramasamy, S.K. FAREC—CNN based efficient face recognition technique using Dlib. In Proceedings of the 2016 International Conference on Advanced Communication Control and Computing Technologies, ICACCCT 2016, Ramanathapuram, India, 25–27 May 2016; Number 978. pp. 192–195. [Google Scholar] [CrossRef]
- Ekman, P.; Rosenberg, E.L. What the Face Reveals: Basic and Applied Studies of Spontaneous Expression Using the Facial Action Coding System (FACS); Oxford University Press: Oxford, UK, 2005; 672p. [Google Scholar] [CrossRef]
- Liu, W.; Wang, Z.; Liu, X.; Zeng, N.; Liu, Y.; Alsaadi, F.E. A survey of deep neural network architectures and their applications. Neurocomputing 2017, 234, 11–26. [Google Scholar] [CrossRef]
- Rhee, J.H.; Ma, J.H.; Seo, J.; Cha, S.H. Review of applications and user perceptions of smart home technology for health and environmental monitoring. J. Comput. Des. Eng. 2022, 9, 857–889. [Google Scholar] [CrossRef]
- Shin, D.H. Quality of experience: Beyond the user experience of smart services. Total Qual. Manag. Bus. Excell. 2015, 26, 919–932. [Google Scholar] [CrossRef]
- Kremer, S.; Schlimm, A.; Lindemann, U. The ExodUX Framework: Supporting Comprehensive User Experience Design. In Proceedings of the 2017 Portland International Conference on Management of Engineering and Technology (PICMET), Portland, OR, USA, 9–13 July 2017; pp. 1–10. [Google Scholar] [CrossRef]
- ISO 9241-210; Ergonomics of Human-System Interaction—Part 210: Human-Centred Design for Interactive Systems. International Organization for Standardization: Geneva, Switzerland, 2010.
- Rico-Olarte, C.; López, D.M.; Kepplinger, S. Towards a Conceptual Framework for the Objective Evaluation of User Experience. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Marcus, A., Wang, W., Eds.; Springer International Publishing: Cham, Switzerland, 2018; Lecture Notes in Computer Science; Volume 10918 LNCS, pp. 546–559. [Google Scholar] [CrossRef]
- Nakamura, W.T.; Ahmed, I.; Redmiles, D.; Oliveira, E.; Fernandes, D.; de Oliveira, E.H.T.; Conte, T. Are UX Evaluation Methods Providing the Same Big Picture? Sensors 2021, 21, 3480. [Google Scholar] [CrossRef] [PubMed]
- Abascal Carranza, C.M. NORMA Oficial Mexicana NOM-015-STPS-2001, Condiciones téRmicas Elevadas o Abatidas-Condiciones de Seguridad e Higiene; Technical Report; Secretario del Trabajo y Previsión Social: Ciudad de México, Mexico, 2002. [Google Scholar]
- Alarcon Lozano, J. Norma Oficial Mexicana NOM-025-STPS-2008, Condiciones de Iluminación en los Centros de Trabajo; Technical Report; Secretario del Trabajo y Previsión Social: Ciudad de México, Mexico, 2008. [Google Scholar]
- Stöckli, S.; Schulte-Mecklenbeck, M.; Borer, S.; Samson, A.C. Facial expression analysis with AFFDEX and FACET: A validation study. Behav. Res. Methods 2018, 50, 1446–1460. [Google Scholar] [CrossRef] [PubMed]
- McDuff, D.; El Kaliouby, R.; Senechal, T.; Amr, M.; Cohn, J.F.; Picard, R. Affectiva-mit facial expression dataset (AM-FED): Naturalistic and spontaneous facial expressions collected ‘in-the-wild’. In Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, Portland, OR, USA, 23–28 June 2013; pp. 881–888. [Google Scholar] [CrossRef]
- Bradley, M.M.; Lang, P.J. International Affective Picture System. In Encyclopedia of Personality and Individual Differences; Zeigler-Hill, V., Shackelford, T.K., Eds.; Springer International Publishing: Cham, Switzerland, 2017; pp. 1–4. [Google Scholar] [CrossRef]
- Lopez-Aguilar, A.A.; Navarro-Tuch, S.A.; Bustamante-Bello, M.R.; Izquierdo-Reyes, J.; Curiel-Ramirez, L.A. Interpretation and Emulation for Telegrams of the KNX Standard on MATLAB Simulink. In Proceedings of the Proceedings—2018 International Conference on Mechatronics, Electronics and Automotive Engineering, ICMEAE 2018, Cuernavaca, Mexico, 26–29 November 2018; pp. 129–133. [Google Scholar] [CrossRef]
- Gutiérrez-Martínez, Y.; Bustamante-Bello, R.; Navarro-Tuch, S.A.; López-Aguilar, A.A.; Molina, A.; Longoria, I.Á.I. A challenge-based learning experience in industrial engineering in the framework of education 4.0. Sustainability 2021, 13, 9867. [Google Scholar] [CrossRef]
- Littlewort, G.; Whitehill, J.; Wu, T.; Fasel, I.; Frank, M.; Movellan, J.; Bartlett, M. The computer expression recognition toolbox (CERT). In Proceedings of the Face and Gesture 2011, Santa Barbara, CA, USA, 21–25 March 2011; pp. 298–305. [Google Scholar] [CrossRef]
- Cao, Z.; Hidalgo Martinez, G.; Simon, T.; Wei, S.; Sheikh, Y.A. OpenPose: Realtime Multi-Person 2D Pose Estimation using Part Affinity Fields. IEEE Trans. Pattern Anal. Mach. Intell. 2021, 43, 172–186. [Google Scholar] [CrossRef]
Group A | Group B | Group C | |
---|---|---|---|
# Female | 10 | 10 | 7 |
# Male | 0 | 0 | 3 |
Age | 18–26 years | 36–43 years | 36–43 years |
Joy | Anger | Surprise | Disgust | |
---|---|---|---|---|
First impression | Bottle 3 | Bottle 3 | Bottle 1 | Bottle 3 |
Dosage measurement | Bottle 1 | Bottle 1 | Bottle 1 | Bottle 3 |
Bottle’s grip | Bottle 1 | Bottle 1 | Bottle 3 | Bottle 3 |
Spill prevention | Bottle 3 | Bottle 3 | Bottle 3 | Bottle 2 |
Residue prevention | Bottle 3 | Bottle 3 | Bottle 3 | Bottle 3 |
Joy | Anger | Surprise | Disgust | |
---|---|---|---|---|
First impression | Bottle 1 | Bottle 1 | Bottle 2 | Bottle 2 |
Dosage measurement | Bottle 2 | Bottle 2 | Bottle 2 | Bottle 2 |
Bottle’s grip | Bottle 2 | Bottle 2 | Bottle 2 | Bottle 1 |
Spill prevention | Bottle 2 | Bottle 2 | Bottle 2 | Bottle 1 |
Residue prevention | Bottle 2 | Bottle 2 | Bottle 1 | Bottle 1 |
Joy | Anger | Surprise | Disgust | |
---|---|---|---|---|
First impression | Bottle 1 | Bottle 2 | Bottle 2 | Bottle 2 |
Dosage measurement | Bottle 2 | Bottle 2 | Bottle 2 | Bottle 2 |
Bottle’s grip | Bottle 1 | Bottle 2 | Bottle 1 | Bottle 1 |
Spill prevention | Bottle 1 | Bottle 1 | Bottle 1 | Bottle 2 |
Residue prevention | Bottle 1 | Bottle 2 | Bottle 1 | Bottle 2 |
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Lopez-Aguilar, A.A.; Bustamante-Bello, M.R.; Navarro-Tuch, S.A.; Molina, A. Development of a Framework for the Communication System Based on KNX for an Interactive Space for UX Evaluation. Sensors 2023, 23, 9570. https://doi.org/10.3390/s23239570
Lopez-Aguilar AA, Bustamante-Bello MR, Navarro-Tuch SA, Molina A. Development of a Framework for the Communication System Based on KNX for an Interactive Space for UX Evaluation. Sensors. 2023; 23(23):9570. https://doi.org/10.3390/s23239570
Chicago/Turabian StyleLopez-Aguilar, Ariel A., M. Rogelio Bustamante-Bello, Sergio A. Navarro-Tuch, and Arturo Molina. 2023. "Development of a Framework for the Communication System Based on KNX for an Interactive Space for UX Evaluation" Sensors 23, no. 23: 9570. https://doi.org/10.3390/s23239570