{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T14:34:17Z","timestamp":1785249257264,"version":"3.55.0"},"reference-count":21,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,3,23]],"date-time":"2025-03-23T00:00:00Z","timestamp":1742688000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science and Technology Council, Taiwan, R.O.C","award":["NSTC 113-2221-E-007-065"],"award-info":[{"award-number":["NSTC 113-2221-E-007-065"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A low-cost dual-FBG (fiber Bragg grating) architecture is employed to capture the pulse waveform of the artery at the subject\u2019s wrist by measuring changes in optical power. The pulse transit time (PTT), pulse ascending time, and pulse descending time extracted from the pulse waveform are used in a blood pressure (BP) estimation model by fitting the measured BP with the reference BP obtained from a commercial sphygmomanometer. The estimation model is developed using data from 29 subjects at the age of 20 to 54. The results demonstrate that the errors between the calculated values and reference values of SBP and DBP for all of the 29 subjects both range from \u22124 to 5 mmHg with mean errors of 0.72 mmHg and 0.83 mmHg, respectively. The standard error can be found to be 2.45 and 2.59 mmHg for SBP and DBP, respectively. Also, it is found that this BP estimation model outperforms two BP models derived by considering PTT only.<\/jats:p>","DOI":"10.3390\/s25072007","type":"journal-article","created":{"date-parts":[[2025,3,24]],"date-time":"2025-03-24T06:21:38Z","timestamp":1742797298000},"page":"2007","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Blood Pressure and Heart Rate Measurements Using Fiber Bragg Grating Sensor with Optical Power Detection Scheme"],"prefix":"10.3390","volume":"25","author":[{"given":"Yu-Jie","family":"Wang","sequence":"first","affiliation":[{"name":"Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Likarn","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,3,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bergholz, A., Greiwe, G., Kouz, K., and Saugel, B. (2023). Continuous Blood Pressure Monitoring in Patients Having Surgery: A Narrative Review. Medicina, 59.","DOI":"10.3390\/medicina59071299"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1038\/s41371-019-0196-9","article-title":"Oscillometric measurement of blood pressure: A simplified explanation. A technical note on behalf of the British and Irish Hypertension Society","volume":"33","author":"Lewis","year":"2019","journal-title":"J. Hum. Hypertens."},{"key":"ref_3","unstructured":"(2025, January 02). Available online: https:\/\/omronhealthcare.com\/blood-pressure\/."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Kachel, E., Constantini, K., Nachman, D., Carasso, S., Littman, R., Eisenkraft, A., and Gepner, Y. (2021). A pilot study of blood pressure monitoring after cardiac surgery using a wearable, non-invasive sensor. Front. Med., 8.","DOI":"10.3389\/fmed.2021.693926"},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Man, P.-K., Cheung, K.-L., Sangsiri, N., Shek, W.J., Wong, K.-L., Chin, J.-W., Chan, T.T., and So, R.H.-Y. (2022). Blood pressure measurement: From cuff-based to contactless monitoring. Healthcare, 10.","DOI":"10.3390\/healthcare10102113"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1038\/s41746-019-0136-7","article-title":"The use of photoplethysmography for assessing hypertension","volume":"2","author":"Elgendi","year":"2019","journal-title":"NPJ Digit. Med."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"945","DOI":"10.1038\/s41371-022-00675-z","article-title":"Wearable blood pressure measurement devices and new approaches in hypertension management: The digital era","volume":"36","author":"Konstantinidis","year":"2022","journal-title":"J. Hum. Hypertens."},{"key":"ref_8","unstructured":"Teng, X.F., and Zhang, Y.T. (September, January 31). An evaluation of a PTT-based method for noninvasive and cuffless estimation of arterial blood pressure. Proceedings of the 28th IEEE EMBS Annual International Conference, New York, NY, USA."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Shriram, R., Wakankar, A., Daimiwal, N., and Ramdasi, D. (2010, January 16\u201318). Continuous cuffless blood pressure monitoring based on PTT. Proceedings of the International Conference on Bioinformatics and Biomedical Technology, Chengdu, China.","DOI":"10.1109\/ICBBT.2010.5479013"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Leit\u00e3o, C., Bilro, L., Alberto, N., Antunes, P., Lima, H., Andr\u00e9, P.S., Nogueira, R., and Pinto, J.L. (2013). Feasibility studies of Bragg probe for noninvasive carotid pulse waveform assessment. J. Biomed. Opt., 18.","DOI":"10.1117\/1.JBO.18.1.017006"},{"key":"ref_11","first-page":"106852S-1","article-title":"Arterial pulses assessed with FBG based films: A smart skin approach","volume":"10685","author":"Domingues","year":"2018","journal-title":"Proc. SPIE"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Sharath, U., Sukreet, R., Apoorva, G., and Asokan, S. (2013). Blood pressure evaluation using sphygmomanometry assisted by arterial pulse waveform detection by fiber Bragg grating pulse device. J. Biomed. Opt., 18.","DOI":"10.1117\/1.JBO.18.6.067010"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"839","DOI":"10.1109\/TBME.2017.2722008","article-title":"A fiber Bragg grating sensor for radial artery pulse waveform measurement","volume":"65","author":"Jia","year":"2018","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Haseda, Y., Bonefacino, J., Tam, H.Y., Chino, S., Koyama, S., and Ishizawa, H. (2019). Measurement of pulse wave signals and blood pressure by a plastic optical fiber FBG sensor. Sensors, 19.","DOI":"10.3390\/s19235088"},{"key":"ref_15","unstructured":"Ishizawa, H., and Koyama, S. (2019). Blood Pressure Estimation Method and Blood Pressure Measurement Device. (10376160 B2), U.S. Patent."},{"key":"ref_16","unstructured":"Bhattacharya, M. (2022). Wearable Health Monitoring Device. (11504010 B2), U.S. Patent."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1016\/S0030-4018(01)01453-5","article-title":"Temperature-insensitive linear strain measurement using two fiber Bragg gratings in a power detection scheme","volume":"197","author":"Chiang","year":"2001","journal-title":"Opt. Commun."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1661","DOI":"10.1364\/AO.41.001661","article-title":"Multipoint temperature-independent fiber-Bragg-grating strain-sensing system employing an optical-power-detection scheme","volume":"41","author":"Chiang","year":"2002","journal-title":"Appl. Opt."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"271","DOI":"10.1016\/j.irbm.2014.07.002","article-title":"A review of methods for non-invasive and continuous blood pressure monitoring: Pulse transit time method is promising?","volume":"35","author":"Peter","year":"2014","journal-title":"IRBM"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1437","DOI":"10.1007\/s00542-016-2895-2","article-title":"Optimizing a new cuffless blood pressure sensor via a solid\u2013fluid-electric finite element model with consideration of varied mis-positionings","volume":"22","author":"Kao","year":"2016","journal-title":"Microsyst. Technol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"3049","DOI":"10.1109\/JSEN.2020.3027919","article-title":"Continuous and accurate blood pressure monitoring based on wearable optical fiber wristband","volume":"21","author":"Li","year":"2021","journal-title":"IEEE Sens. 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