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Hong Kong media: China has developed a blood oxygen detector to detect psychological "pressure bars"

recently, a Hong Kong report said that Chinese scientists are developing a micro device, a blood oxygen detector. Through it, people with abnormal blood oxygen levels in the crowd can be detected, those who intend terrorist attacks can be detected as soon as possible, and electromechanical "human bombs" can be activated to prevent human suicide bombs. Through this device, law enforcement officers can detect the psychological "pressure bar" on each person's head in the crowd

a Hong Kong newspaper reported 12 times 8 There is a needle valve on the side of the working cylinder of the rubber universal testing machine. If its position is adjusted improperly, the pressure of the testing machine cannot rise to high tonnage. At this time, the position of the nut and screw should be adjusted repeatedly to make the oil valve seal the oil circuit, so that the oil leaking from the oil cylinder and piston does not return to the oil tank along the oil return pipe. Loosening the screw can also eliminate the air in the U-shaped leather ring. It is said that Chinese scientists are developing a micro device, Through it, people with abnormal blood oxygen levels in the crowd can be detected, and the "human bomb" intended for terrorist attacks can be found as soon as possible

it is reported that stress will have a series of effects on the body, which can be shown as changes in heart rate, facial expression and body temperature, and scientists can monitor it from a distance. But the reading is not very reliable. For example, a person can control his heartbeat when he sees the vehicle carrying products through training. This is why Chen Tong, an associate professor at the school of electronic information engineering, Southwest University, examined another indicator - blood oxygen level. Using hyperspectral imaging to check the electromagnetic spectrum information, Chen Tong and his research team have developed a "pressure sensor", which can measure the oxygen content in the blood of all exposed areas of the body, such as the face. Chen Tong said, "the greater the mental pressure, the higher the blood oxygen concentration." The report said that the study comes at a time when China has experienced multiple fatal attacks and security concerns have intensified

it is reported that through this device, law enforcement officers can detect the psychological "pressure bar" on each person's head in the crowd. Researchers say they can use this technique to find out the difference between hyperoxia caused by stress and hyperoxia caused by physical activity. Chen Tong said that laboratory tests of the technology have achieved encouraging results. However, there are new engineering challenges in making the device work. The biggest obstacle is how to obtain remote data. For example, the thermal deformation temperature is higher than that of PA and PVC. The security personnel in the station need to screen a large amount of data and process it in a very short time. Smart devices do not have such computing power, so security personnel need to send information to rear analysts through wireless networks