In order to safeguard the interests of the vast majority of candidates and improve the fairness of the examination, necessary restrictive measures must be taken against the cheating of a few people. The examination management department adopted the practice of installing mobile phone signal shield in the examination room.

During the examination, the examination room and the surrounding environment will be closely monitored in an all-round way. At that time, all monitoring stations and monitoring vehicles will enter the state, and some radio frequency bands will be fully monitored. Once abnormal signals are found, signal interference measures will be taken immediately to block the signals. In addition, technicians can also judge the direction according to the direction finder and assist relevant departments to detect cheaters.

Some parents of candidates feel uneasy about this and worry that it will affect their children's normal performance in the college entrance examination. In fact, the parents of examinees have no concerns in this regard. These devices will not cause harm to the bodies of examinees and examination staff. Moreover, this kind of examination room mobile phone signal shield can be completely silent and will not affect the normal play of children's college entrance examination.

Whether any kind of electromagnetic wave transmitting equipment is harmful to human body depends on the specific absorption rate of electromagnetic wave by human body. The maximum RF radiation safety standard SAR recognized by the International Commission on non ionizing radiation protection is 2.0, and China's standard is 1.5. At present, the transmission power of the transmission tower of the wireless communication base station is generally 40w~50w, and the specific absorption rate of the human body to the electromagnetic wave is below 1.0 when it is 20 to 30 meters away from the transmission tower. The mobile phone signal shield in the examination room is a micro power device, and its transmission power is generally less than 3W. In this case, the specific absorption rate of electromagnetic waves by the human body is very small. Therefore, the mobile Signal Jammer used in the examination room does not pose a hazard to human health.

"Shengma" signal shield | Nanjing Baikang Mechanical Technology Co., Ltd-ljw