There is a base station near the examination room, will it affect the working effect of the signal jammer in the examination room?
The new semester has started, and this semester is the new college entrance examination period. At present, many colleges and universities that have been included in the test centers have begun to purchase anti-cheating equipment in large quantities, and are preparing to install test room signal jammers in the test preparation classrooms in advance. This kind of equipment that can effectively block signals can effectively prevent candidates from cheating and is a good partner of invigilators. In fact, teachers and students are no strangers to this kind of signal shielding equipment. But if there is a base station near the school and a base station near the examination room, will it affect the working effect of the signal jammer in the examination room?
In fact, to figure out this problem, we first need to know what the working principle of the signal jammer in the examination room is. When the mobile phone is working, within a certain working frequency band, the mobile phone and the base station are connected according to electromagnetic waves, and data and music are transmitted with a certain serial port baud rate and modulation mode. The basic principle of the test room signal jammer is to complete the data signal shielding based on the transmission of electromagnetic interference. According to sending a high-power data signal of a certain signal frequency, the surrounding electromagnetic environment is damaged, and the mobile phone cannot be analyzed normally from the base station signal, so as to achieve the effect of shielding the data signal.
If there is a communication base station in the school, the transmission signal strength is stronger and more durable, and it is not easy to be blocked by the digital test room signal jammer, and the shielding effect of the signal shielding device will naturally be affected. The harm is great, so if you want to achieve a stable
What is the actual effect of reliable shielding?
1. Because the examination room needs to be sure of a comfortable environment, the signal strength of the high-power equipment is strong, and a better heat dissipation environment is required, and the noise is louder. Therefore, it is unrealistic to modify the high-power test room signal jammer. It can basically improve the equipment on the basis of the original low-power test room signal jammer to meet the shielding requirements.
2. Most of the test room signal jammers used in the test room use omnidirectional antennas. By changing the directional antenna to achieve the improvement of the shielding distance, the shielding requirements of all test rooms have been met.
3. According to the contact between the school and the network operator of the base station, adjust the orientation of the directional antenna of the base station. The frontal orientation of the wireless antenna should not be facing the examination room, which has reduced the network signal of the base station. Or temporarily turn off the base station of the network operator when taking the test.