Table 3.
SNo. | Application | Sensor | Characteristics | Sensed Parameter | Wearable Type | Ref |
---|---|---|---|---|---|---|
1. | Heartbeat Monitoring | ECG; AD8232; MAXL335cc | Inexpensive, Obtrusive |
Heartrate | Wristband | [28,53,58,59] |
2. | Temperature | LM35; DHT11 | Inexpensive, noninvasive | Body temperature | Wristband | [3,4,5,19,22,24,58,59,60,61,62,63,64,65] |
3. | Glucose monitoring | Glucose sensor; INA219 | Invasive, expensive | Blood glucose | Patch on arm/strip | [6,42,45,46,53 |
4. | Respiratory | Pulse Oximeter | Inexpensive, easy to use |
Blood oxygen saturation | Clamp on finger | [3,19,45,46,53,54,66,67,68] |
5. | Respiratory | Airflow sensor | Obtrusive | Breathing rate | Worn on face | [33,51] |
6. | GSR | GSR sensor | Expensive, noninvasive | Sweat gland activity | Patch on arm | [46] |
7. | Acceleration | Acceleration sensor; ADXL345 | Inexpensive, noninvasive | Movement | Wristband | [58] |
8. | Breathing | MQ2 sensor | Inexpensive, noninvasive | Acetone in Breadth | Mouth piece | [34] |
9. | Load | Strain Gauge load cell | Inexpensive, noninvasive | Weight of medicine | Medicine box | [69] |
10. | Communication | GSM module, Wi-Fi module | Storage, Backup | Transferring data | Wristband | [5,6,20,28,29,31,34,51,62,64,65,70,71,72,73] |
11. | Touch | Pressure sensor | Non-invasive, Expensive | Pressure on skin | Patch on skin | [74] |
12. | Moisture | Moisture sensor | Non-expensive | Moisture | Wristband | [71] |
13. | Organizing | RFID sensor | Non-expensive | RF waves | Tag | [3,5,21,23,24,59,75,76,77,78,79] |
14. | Movement | PIR | Non-expensive, Not attached to the body | IR rays | Attached to fixed body | [23] |
15. | Touch | GSR sensor | Expensive, nonintrusive | Sweat glands | Patch on skin | [46] |