Heart rate monitor

heart monitorHeart rate sensorheart rate monitorsHeartbeat sensorcardiac monitorsheart monitorsheart rateheart rate monitoringheart rate watchheartbeat detector
A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study.wikipedia
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Polar Electro

PolarPolar RS200
The first wireless EKG heart rate monitor was invented in 1977 by Polar Electro as a training aid for the Finnish National Cross Country Ski team. Garmin, Polar Electro, Suunto and Fitbit are vendors selling consumer heart rate products.
Polar Electro Oy (globally known as Polar) is a manufacturer of sports training computers, particularly known for developing the world's first wireless heart rate monitor.

Heart rate

heartbeatresting heart ratemaximum heart rate
A heart rate monitor (HRM) is a personal monitoring device that allows one to measure/display heart rate in real time or record the heart rate for later study. Both types of signals can provide the same basic heart rate data, using fully automated algorithms to measure heart rate, such as the Pan-Tompkins algorithm.

Smartwatch

smart watchsmartwatcheswatch phone
In recent years, it has been common for smartwatches to include heart rate monitors, which has greatly increased popularity.
Peripheral devices may include digital cameras, thermometers, accelerometers, pedometers, heart rate monitors, altimeters, barometers, compasses, GPS receivers, tiny speakers, and microSD cards, which are recognized as storage devices by many other kinds of computers.

Electrocardiography

electrocardiogramECGEKG
The first wireless EKG heart rate monitor was invented in 1977 by Polar Electro as a training aid for the Finnish National Cross Country Ski team. Measuring electrical heart information is referred to as Electrocardiography (ECG or EKG).

Photoplethysmogram

PhotoplethysmographphotoplethysmographyPPG
PPG (Photoplethysmography) sensors use a light-based technology to measure the blood volume controlled by the heart's pumping action.

Activity tracker

Smart bandfitness trackeractivity trackers
Wearable heart rate monitor s for athletes were available in 1981.

Apple Watch

Apple Watch Series 4Apple Watch EditionApple
The watch is equipped with a built-in heart rate sensor, which uses both infrared and visible-light LEDs and photodiodes.

E-textiles

Exercise

physical exerciseexercisingphysical activity
It is largely used to gather heart rate data while performing various types of physical exercise.

Holter monitor

Ambulatory ECG monitoringambulatory electrocardiogram monitoringHolter
Portable medical units are referred to as a Holter monitor.

Pan–Tompkins algorithm

Pan-TompkinsPan-Tompkins algorithm
Both types of signals can provide the same basic heart rate data, using fully automated algorithms to measure heart rate, such as the Pan-Tompkins algorithm.

Bluetooth

Bluetooth 4.0Bluetooth 5.0Bluetooth 2.0
This signal can be a simple radio pulse or a unique coded signal from the chest strap (such as Bluetooth, ANT, or other low-power radio link).

ANT (network)

ANT+ANTANT network standard
This signal can be a simple radio pulse or a unique coded signal from the chest strap (such as Bluetooth, ANT, or other low-power radio link).

Light-emitting diode

LEDLEDslight emitting diodes
More recent devices use optics to measure heart rate by shining light from an LED through the skin and measuring how it scatters off blood vessels.

Oxygen saturation (medicine)

oxygenationoxygen saturationoxygenated
In addition to measuring the heart rate, some devices using this technology are able to measure blood oxygen saturation (SpO 2 ).

Garmin

Garmin Ltd.Garmin InternationalGarmin Aviation
Garmin, Polar Electro, Suunto and Fitbit are vendors selling consumer heart rate products.

Suunto

Suunto MC-1Suunto Oy
Garmin, Polar Electro, Suunto and Fitbit are vendors selling consumer heart rate products.

Fitbit

Garmin, Polar Electro, Suunto and Fitbit are vendors selling consumer heart rate products.

Heart rate variability

variabilityheart rate variability trainingHRV
Currently heart rate variability is less available on optical devices.

Pedometer

number of steps takennumber of steps walkedstep counter

EHealth

e-healthcybermedicinecomputer networked medical services

Wavelet

waveletswavelet analysisscaling function
It can typically be visualized as a "brief oscillation" like one recorded by a seismograph or heart monitor.

Wearable computer

wearable computingwearableswearable
They may incorporate special sensors such as accelerometers, thermometer and heart rate monitors, or novel user interfaces such as Google Glass, an optical head-mounted display controlled by gestures.