Human monitoring plays a vital function in the human body when it comes to medical diagnosis and health care. This is because the information can contain valuable data like on arterial occlusions, atherosclerosis, arrhythmias, autonomous pathologies of the nervous system, obstructive sleep apnea, and the stress levels. This involves the existing methods like the photoplethysmogram (PPG) sensor and electrocardiogram (ECG) sensor, which require direct skin contact, which can cause skin irritation and discomfort during prolonged wearing out.
To reduce the inconvenience of the conventional sensors, millimeter and microwave wave sensors are proposed to be used with the help of micro-Doppler effect, which is from the heart and lung activity. Essentially, a Doppler radar sensor is capable of detecting respiration and heart rate within a few meters of a target. Still, it presents several problems and is not suitable for outpatient treatment.
The crucial proximity sign sensor has recently been proposed and developed when carrying out human monitoring. The proximity sign sensors detect respiration, wrist pulse, and heart rate. This sensor essentially uses field perturbation of the radio frequency planar resonator because of the proximity of the radial artery or chest to the wrist pulse. Different detection systems based on a SAW filter, a phase-locked loop synthesizer, an interferometer, and a reflectometer have been suggested. These self-supporting systems can measure near-field perferometer and convert it to a DC voltage. As a result, they can record the heart rate and respiratory rate near the patient’s chest frame and the heart rate of the radial artery of the wrist.
In this case, a large amount of data is constantly accumulated when carrying out human monitoring, and this can lead to the revolution in medical analysis and research. These data can be collected to know minute-by-minute changes in the body function in response to medications, stress, infections, etc. This indicates the possibilities are immense.
To reap benefits, we must ask ourselves why the body monitoring is no longer effective and widespread. This can give the answer that many of the targeted body monitoring require direct access to the bloodstream and the other body fluids. This is actually not an easy task to solve.
A simple technique is to prick the skin for blood collection and analysis regularly. However, this only works with regular monitoring. It doesn’t provide constant access to body fluids. Sensors that are permanently implanted in the bloodstream are required. The difficulty, however, is that enzymes, moisture, and the immune system quickly bring havoc and destroy mechanical devices. Implants also offer a variety of alternatives to life-threatening infections that must be treated.
While the path to human monitoring of the body poses challenges, generally, these challenges are within our grasp, and means of overcoming them have been made around the world. The medical device, monitoring, and implant space are totally immense. Therefore, there is no way to do justice to the many existing research companies and projects. This means when it is carried out, there will be complete accuracy and information, which will be essential. It is important to have a good network and use other sources of information when carrying out human monitoring. Furthermore, the credibility of the data must be verified before it can be accepted.