Objectives and Motivations: Our objectives of the term paper projects are to explore a survey research on recent developments using photonic technology. Optical Heart rate monitoring (OHRM) was chosen to be our project topic. The application of Photoplethysmography (PPG) technology would be discussed. Introduction Heart Rate is determined by the number of times beats in one minute. It is difficult to measure accurately and the most important physiological parameters reflecting our body condition. Continuous or routine measurement of heart rate become essential once patients were suffering from any diseases. Analysis of heart rate would help to maintain and monitor health, diagnose and detect coronary diseases. Thus, heart rate becomes an important indicator for recognizing the functionality of heart, also be an indicator of health and disease. There widely use non-invasive methods for measuring heart rate: by the traditional method, is measured by doctor that feel and count the pulse of the pulsating arterial blood in suitable parts of our body such as wrist and …show more content…
The principle of PPG sensors is the optical detection of blood volume changes in the neurovascular bed of the tissue. It contains two main optical devices, such as a light source and an optical light detector. In the past, red and Infrared (IR) light-emitting diodes (LEDs) were commonly used as the light source. The main function of the PPG sensor was monitoring the changes in the light intensity via reflection from or transmission through our tissue. This changes in terms of light intensity are associated with small variations in blood perfusion of the tissue and provide information on the cardiovascular system, especially the pulse rate of our body. Light pass through the biological tissue, it can be absorbed by different substances, such as pigments in the skin, bone and venous
Career Episode One Introduction C.E 1.1 I completed this collective project in the optoelectronic information laboratory of University of Shanghai for Science and Technology from July to October 2011 when learning the photoelectric detection technology. As the team leader, I completed the project design, team organization, actual operation and other core work. Background C.E 1.2 Upon completion of the basic course research in the freshman and sophomore year, my teacher Ling Chen believed that he should enhanced our practical ability, so he provided us with the topic of the research on lubricating oil film thickness precision detection technology of the sliding bearing based on the principle of the optical fiber displacement sensor. Our research object was water film thickness detection.
Internal temperatures can modify the contraction of the heart by increasing or decreasing heart rate.5 The goal of the experiment was to subject the crayfish to different conditions to monitor the change in contractility of the
1. Identify the range of senses involved in communication • Sight (visual communication), Touch (tactile communication), Taste, Hearing (auditory communication), Smell (olfactory communication) 2. Identify the limited range of wavelengths and named parts of the electromagnetic spectrum detected by humans and compare this range with those of THREE other named vertebrates and TWO named invertebrates. Figure 1: the electromagnetic spectrum source: www.ces.fau.edu Vertebrates Human Japanese Dace Fish Rattlesnake Zebra Finch Part of electromagnetic spectrum detected ROYGBV (visible light) detected by light sensitive cells in the eye called rods and cones.
Then we obtained the heart rate, which was done with a total of 3 different D.
The light then breaks into parallel lines. The grating allows us to see the colors in the spectrum. We can measure the light using the spectroscope grid template. Exercise 2: Using the Spectroscope Questions A. Describe the similarities and differences between the spectra of incandescent light and fluorescent light. Use your results in Data Table 1 to explain your answer.
Light absorption occurs when atoms or molecules take up the energy of a light and reduces the transmission of light. The absorbance will increase with an increase in concentration while the transmittance will decrease with an increase in
This device measured blood pressure with an external cuff on the patient’s arm or leg Arterial Line Monitoring* IMPORTANT Remember to re-calibrate the system to each patient when attaching the line! Instructions Attach module and cable to the monitoring system Select the arterial line (ART) via the touch screen, this sets a label for the screen Select color choice and size of the waveform via the touch screen Calibrate, also known as “zeroing” the waveform by using hospital system procedures and opening the line to air while touching the “zero” button (Note: An audio tune and message on the screen will be displayed once the calibration is
A person may be tired with doing daily activities such as shopping, climbing stairs, or simply just walking. This happens because the heart cannot pump enough blood to supply the tissues. One of the biggest symptoms is an increased heart rate. This may feel like the heart is throbbing, or racing. This happens because the heart is trying to catch up to the pumping capacity, causing the heart to beat so much faster.
The effect of exercise on heart rate in beats per minute (bpm) was tested in this lab, with the percent change in heart rate being the marker for change. First, resting heart rate in bpm was recorded. Then an exercise was performed, with the exercises varying depending upon the group. After physical exertion was completed for a certain period of time, the heart rate in bpm was then recorded. If more exercise is done, then the heart rate will increase to a greater extent.
Pacemakers are used to treat patients with heart beats that are much faster or slower than usual. These irregular heartbeats are called arrhythmias. The problem with arrhythmias is that not enough blood gets pumped through the body, which can cause fatigue, shortness of breath and even fainting. The pacemaker’s job is to help regulate the heartbeat and alleviate arrhythmias symptoms. The pacemaker regulates heartbeat by using electrical signals to cause the heart muscles to contract in constant intervals.
we can visibly see ultra violet rays via sun tanning beds, black lights, and welders. another form of light is light that we can see eg, sun light, is one type
1.Identify the problem being addressed and is it a new problem or a well known problem? There are a variety of wearable sensors like location beacons, accelerometers, cameras, and physiological sensors. But then, there is a need to develop a single device that can monitor a wealth of activities. Secondly, there is a need to develop tools and techniques for continuously sensing user activities of interest, in order to develop a variety of truly ubiquitous computing applications.
During exercise, your heart rate increases then plateaus and will remain at this state for as long as you sustain the consistent pace. It further increases when more effort is given, and the response of the heart to exercise is to pump oxygen to the muscles used. The process of this is oxygen being transferred to red blood cells from the lungs, which transports to the heart, which pumps the oxygen to the muscles. While exercising, the mitochondria in the muscle syndicates an energy molecule; ATP with oxygen, glucose and fat.
Caffeine did not have a measurable effect on the heart rate
Background Information: The spectrophotometer is an