How to plan and design prison mobile phone signal shielding system engineering?

At present, more and more prisons are beginning to install mobile phone signal shielding systems, and we often receive inquiries from prisons about such projects. During the consultation process, some issues are worth discussing and making reasonable suggestions. For example, a customer put forward a general requirement that a mobile phone signal shielding system needs to be installed in the prison, striving to cover all areas within the prison wall 100%, but for areas outside the prison, such as office areas outside the wall, armed police patrol departments, and nearby residential areas, factories, etc., it must be considered that they are not affected. Is such an overall project requirement feasible? Can the expected shielding effect be achieved? If it is unreasonable, how should the prison’s mobile phone signal shielding system project be planned and designed?

First of all, it should be clear that the shielding signal emitted by the mobile phone signal shielding system is a radio frequency signal. The transmission and coverage range of this wireless signal are affected by factors such as the antenna’s directivity or omnidirectionality, coverage direction, range or distance control. However, the current control of the transmission range or distance of wireless signals remains at the macro and large range. It is almost impossible to achieve precise distance restrictions, or to completely shield within the prison wall while the signal outside the wall is not affected. In reality, our suggestion is to give priority to ensuring full coverage of shielded signals within the prison walls, and to leave at least a 20-50 meter buffer zone outside the walls, in which the mobile phone signal shielding system will occasionally be affected.

Now let’s discuss the rationality of requiring full coverage of signals within the prison walls and leaving no signal blind spots. Our suggestion is to divide the prison into key areas and non-key areas. The mobile phone signal shielding system in the key areas should achieve full and uninterrupted coverage, and the non-key areas can selectively determine whether full coverage is required according to specific circumstances. The non-key areas of the prison include the warning isolation area near the wall, the outdoor square with wide visibility, the public activity area, the hall, the corridor and other areas where video surveillance is installed. The reason for not implementing signal shielding in these non-key areas is simple. The purpose of installing a mobile phone signal shielding system in the prison is to prevent prisoners from secretly using mobile phones. Obviously, prisoners will not use mobile phones publicly in the above non-key areas. The best cell phone jammer and wifi jammer.

In addition, not installing a mobile phone signal shielding system in the non-key areas of the prison can reduce engineering construction costs and save investment, and does not mean that there are any limitations on equipment or technical capabilities. If the prison has sufficient budget resources and is willing to invest a lot of money to build a perfect mobile phone signal shielding system project, we fully support it!

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