Radio detector can analyze personal emotional state

Generally speaking, facial expressions are an important way to identify a person's mood and feelings, but in social interaction, many people are unwilling to reveal their true emotions. Have you ever thought that someone can know whether you are happy or sad through a computer or smartphone? According to reports, researchers at the Massachusetts Institute of Technology Computer Science and Artificial Intelligence Laboratory have developed a new version called EQ- Radio's mood detector, this device will release radio frequency waves to the test subject and capture the reflected signal to measure his breathing pattern and heart rate. The obtained data will match different emotional signals with physical factors through an algorithm, and classify people's emotions into four states: sadness, anger, happiness and joy. In the experiment, the researchers asked 12 participants to sit about one meter away from the device, and asked everyone to recall a private experience that made them feel a certain emotion. Each emotion lasted for 2 minutes. Heart rate and breathing rate will be measured to measure the emotions of participants.　　The results show that the measurement capability of this equipment is quite accurate, with an accuracy rate of 87%. In addition, researchers also improve the accuracy of detection by moving the body. Because the large range of chest movement helps breathing to get rid of the subtle effects of heartbeat.　　 Researchers also found that heart rate, not breathing rate, is the greatest 'indicator' of a person's emotional state. After all, people can hold their breath, but the heartbeat is hard to control.　　 Ru0026D personnel hope that related technologies can be used to develop robotic psychotherapists in the future, or advertising companies can collect feedback from the audience in a timely manner.

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