{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T23:47:42Z","timestamp":1773186462070,"version":"3.50.1"},"reference-count":24,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2022,4,13]],"date-time":"2022-04-13T00:00:00Z","timestamp":1649808000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003052","name":"Ministry of Trade, Industry and Energy","doi-asserted-by":"publisher","award":["10084657"],"award-info":[{"award-number":["10084657"]}],"id":[{"id":"10.13039\/501100003052","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>With the development of robot technology, robot utilization is expanding in industrial fields and everyday life. To employ robots in various fields wherein humans and robots share the same space, human safety must be guaranteed in the event of a human\u2013robot collision. Therefore, criteria and limitations of safety need to be defined and well clarified. In this study, we induced mechanical pain in humans through quasi-static contact by an algometric device (at 29 parts of the human body). A manual apparatus was developed to induce and monitor a force and pressure. Forty healthy men participated voluntarily in the study. Physical quantities were classified based on pain onset and maximum bearable pain. The overall results derived from the trials pertained to the subjective concept of pain, which led to considerable inter-individual variation in the onset and threshold of pain. Based on the results, a quasi-static contact pain evaluation method was established, and biomechanical safety limitations on forces and pressures were formulated. The pain threshold attributed to quasi-static contact can serve as a safety standard for the robots employed.<\/jats:p>","DOI":"10.3390\/s22082996","type":"journal-article","created":{"date-parts":[[2022,4,13]],"date-time":"2022-04-13T23:07:16Z","timestamp":1649891236000},"page":"2996","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Assessment of Pain Onset and Maximum Bearable Pain Thresholds in Physical Contact Situations"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3946-5000","authenticated-orcid":false,"given":"Doyeon","family":"Han","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Kyung Hee University, Yongin-si 17104, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0503-0140","authenticated-orcid":false,"given":"Moonyoung","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Industry-Academic Cooperation Foundation, Kyung Hee University, Yongin-si 17104, Korea"}]},{"given":"Junsuk","family":"Choi","sequence":"additional","affiliation":[{"name":"Safetics, Seoul 07255, Korea"}]},{"given":"Heonseop","family":"Shin","sequence":"additional","affiliation":[{"name":"Safetics, Seoul 07255, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3812-5509","authenticated-orcid":false,"given":"Donghwan","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, Kyung Hee University Hospital at Gangdong, Seoul 02447, Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9222-6979","authenticated-orcid":false,"given":"Sungsoo","family":"Rhim","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Kyung Hee University, Yongin-si 17104, Korea"}]}],"member":"1968","published-online":{"date-parts":[[2022,4,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bayram, B., and \u0130nce, G. (2018). Advances in Robotics in the Era of Industry 4.0. Industry 4.0: Managing The Digital Transformation, Springer.","DOI":"10.1007\/978-3-319-57870-5_11"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"837","DOI":"10.1016\/j.trpro.2021.07.052","article-title":"An overview of robot applications in automotive industry","volume":"55","author":"Bulej","year":"2021","journal-title":"Transp. Res. Procedia"},{"key":"ref_3","unstructured":"(2022, January 31). IFR presents World Robotics Report 2020. Available online: https:\/\/ifr.org\/ifr-press-releases\/news\/record-2.7-million-robotswork-in-factories-around-the-globe."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1590","DOI":"10.1109\/ACCESS.2020.3045792","article-title":"Robots under COVID-19 pandemic: A comprehensive survey","volume":"9","author":"Shen","year":"2020","journal-title":"IEEE Access"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Antonelli, D., Astanin, S., and Bruno, G. (2016, January 3\u20135). Applicability of human-robot collaboration to small batch production. Proceedings of the Working Conference on Virtual Enterprises, Porto, Portugal.","DOI":"10.1007\/978-3-319-45390-3_3"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"457","DOI":"10.4271\/2016-01-0337","article-title":"A framework for collaborative robot (CoBot) integration in advanced manufacturing systems","volume":"9","author":"Djuric","year":"2016","journal-title":"SAE Int. J. Mater. Manuf."},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Haddadin, S., Haddadin, S., Khoury, A., Rokahr, T., Parusel, S., Burgkart, R., Bicchi, A., and Albu-Sch\u00e4ffer, A. (2016, January 7\u201312). A truly safely moving robot has to know what injury it may cause. Proceedings of the 2012 IEEE\/RSJ International Conference on Intelligent Robots and Systems, Vilamoura-Algarve, Portugal.","DOI":"10.1109\/IROS.2012.6386163"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/j.robot.2017.04.004","article-title":"Safety-critical advanced robots: A survey","volume":"94","author":"Guiochet","year":"2017","journal-title":"Robot. Auton. Syst."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Haddadin, S., Albu-Sch\u00e4ffer, A., and Hirzinger, G. (2010). Safe physical human-robot interaction: Measurements, analysis and new insights. Robotics Research, Springer.","DOI":"10.1007\/978-3-642-14743-2_33"},{"key":"ref_10","unstructured":"(2016). Robots and Robotic Devices\u2014Collaborative Robots (Standard No. ISO\/TS 15066:2016)."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Rosenstrauch, M.J., and Kr\u00fcger, J. (2017, January 24\u201326). Safe human-robot-collaboration-introduction and experiment using ISO\/TS 15066. Proceedings of the 2017 3rd International Conference on Control, Automation and Robotics (ICCAR), Nagoya, Japan.","DOI":"10.1109\/ICCAR.2017.7942795"},{"key":"ref_12","unstructured":"Matthias, B., and Reisinger, T. (2016, January 21\u201322). Example application of ISO\/TS 15066 to a collaborative assembly scenario. Proceedings of the ISR 2016: 47st International Symposium on Robotics, Munich, Germany."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Sugiura, R., Fujikawa, T., Nishikata, R., and Nishimoto, T. (2019, January 15\u201318). Soft tissue bruise injury by blunt impact in human-robot interaction-difference of tolerance between chest and extremities. Proceedings of the 2019 19th International Conference on Control, Automation and Systems (ICCAS), Jeju, Korea.","DOI":"10.23919\/ICCAS47443.2019.8971656"},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Han, D., Park, M.Y., Shin, H., Kim, K.S., and Rhim, S. (2018, January 26\u201330). Identifying Safety Conditions of Human-Robot Collision based on Skin Injury Analysis. Proceedings of the 2018 15th International Conference on Ubiquitous Robots (UR), Honolulu, HI, USA.","DOI":"10.1109\/URAI.2018.8441793"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1578","DOI":"10.1177\/0278364912462256","article-title":"On making robots understand safety: Embedding injury knowledge into control","volume":"31","author":"Haddadin","year":"2012","journal-title":"Int. J. Robot. Res."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"216","DOI":"10.3758\/s13428-014-0453-3","article-title":"Measuring mechanical pain: The refinement and standardization of pressure pain threshold measurements","volume":"47","author":"Melia","year":"2015","journal-title":"Behav. Res. Methods"},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Park, M.Y., Han, D., Lim, J.H., Shin, M.K., Han, Y.R., Kim, D.H., Rhim, S., and Kim, K.S. (2019). Assessment of pressure pain thresholds in collisions with collaborative robots. PLoS ONE, 14.","DOI":"10.1371\/journal.pone.0215890"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Shin, H., Kim, S., Seo, K., and Rhim, S. (2019). A Virtual Pressure and Force Sensor for Safety Evaluation in Collaboration Robot Application. Sensors, 19.","DOI":"10.3390\/s19194328"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"50","DOI":"10.1111\/j.1553-2712.2009.00620.x","article-title":"Validation of the Wong-Baker FACES pain rating scale in pediatric emergency department patients","volume":"17","author":"Garra","year":"2010","journal-title":"Acad. Emerg. Med."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1179\/108331905X55776","article-title":"Visual analogue scale, numeric pain rating scale and the McGill Pain Questionnaire: An overview of psychometric properties","volume":"10","author":"Kahl","year":"2005","journal-title":"Phys. Ther. Rev."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Povse, B., Koritnik, D., Bajd, T., and Munih, M. (2010, January 26\u201329). Correlation between impact-energy density and pain intensity during robot-man collision. Proceedings of the 2010 3rd IEEE RAS & EMBS International Conference on Biomedical Robotics and Biomechatronics, Tokyo, Japan.","DOI":"10.1109\/BIOROB.2010.5626073"},{"key":"ref_22","first-page":"2","article-title":"Method to investigate contusion mechanics in living humans","volume":"17","author":"Desmoulin","year":"2011","journal-title":"J. Forensic Biomech."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1016\/S0197-4572(06)80074-1","article-title":"Wound care for the elderly","volume":"14","author":"Resnick","year":"1993","journal-title":"Geriatr. Nurs."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"442","DOI":"10.21215\/kjfp.2020.10.6.443","article-title":"Relationship of Calcium\u2013Magnesium Ratio in Hair with Triglyceride-Glucose Index and Triglyceride\/High-Density Lipoprotein-Cholesterol Ratio among Overweight or Obese Korean Individuals: A Pilot Study","volume":"10","author":"Sim","year":"2020","journal-title":"Korean J. Fam. Pract."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/8\/2996\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:53:34Z","timestamp":1760136814000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/8\/2996"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,4,13]]},"references-count":24,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2022,4]]}},"alternative-id":["s22082996"],"URL":"https:\/\/doi.org\/10.3390\/s22082996","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,4,13]]}}}