Basic structure and principle of cell phone jammers

　　cell phone jammers interfere with mobile phone signals so that they cannot communicate normally with communication base stations. The blocker is mainly composed of several parts: switching power supply, scanning control module, frequency band microwave radio frequency control module, power amplifier module and transmitting wireless antenna module. signal jammerIts working principle is to generate a scanning signal through a sawtooth signal generator, enter the mobile communication working frequency band, and then transmit an interference signal through the power amplifier circuit and the voltage regulator tube, thereby blocking the mobile phone signal.

GPS jammer

　　The harm of students staying up late for a long time to use electronic products

　　Students staying up late for a long time to use mobile phones and other electronic products will have a serious impact on physical and mental health. Lack of sleep can cause students to lose concentration, memory loss, and poor academic performance. In addition, staying up late for a long time will also affect students' emotions and psychological state, and increase the risk of anxiety and depression. In order to protect the health of students, schools must take effective measures to limit their use of electronic products at night.

　　School response measures

　　Many schools have installed mobile phone signal blockers in dormitories to limit students from using mobile phones at night. These blockers are usually installed in hidden locations and are not easy to be found. When the blocker is activated, the mobile phone signal in the dormitory will be blocked, and students will not be able to continue to use their mobile phones for entertainment. Such measures force students to go to bed early, thereby improving their habit of staying up late.

　　Shielding effect and material selection of mobile phone signal blockers

　　The shielding effect of mobile phone signal blockers is affected by the wall materials of the dormitory and the location of the equipment. The signal attenuation of wooden walls and materials such as glass and plaster is low, and some blockers may have a certain impact on the equipment through direct radiation and reflection from doors and windows, giving people an illusion of strong penetration ability. When selecting and installing blockers, schools will choose the most suitable equipment according to the dormitory structure and material characteristics to ensure the best shielding effect.

　　The impact of blockers on student behavior and work and rest

　　The use of mobile phone signal blockers effectively reduces students' use of mobile phones at night and promotes them to develop healthy work and rest habits. Many students have to put down their mobile phones and go to bed early under the effect of the jammer. Adequate sleep not only makes them more focused in class, but also significantly improves their learning efficiency. At the same time, the application of the jammer also reduces the contradictions and conflicts caused by the use of mobile phones among students, creating a more harmonious dormitory environment.

　　Future development of mobile phone signal jammers

　　With the continuous advancement of science and technology, mobile phone signal jammers are also developing continuously. In the future, jammers will be more intelligent and can automatically adjust the shielding range and intensity according to the environment and needs. In addition, the new jammer will pay more attention to the protection of human health and reduce the impact on medical equipment such as hearing aids and pacemakers. When applying jammers, schools should also continuously improve management measures to ensure that while protecting students' health, it does not affect normal study and life.