Prison is a special environment, and security management is crucial. With the development of technology, the popularity of mobile phones has brought new security challenges. In order to prevent prisoners from using mobile phones for illegal communications and criminal activities, many prisons have introduced mobile phone signal shielding technology.
Why is cell phone jammer needed?
In prison, prisoners can use mobile phones to carry out various illegal activities, such as:
Escape plan: Contact with outside accomplices and plan escape.
Criminal command: Remotely command criminal activities outside in prison.
Information leakage: Leak sensitive information inside the prison through mobile phones.
Therefore, shielding mobile phone signals is a key step to ensure prison security.
Technical details of signal shielding in prison
Coverage and power adjustment:
Coverage: The signal shielding device in the prison needs to cover the entire prison area to ensure that there are no dead ends. Usually, the coverage of the shielding device can be achieved through the layout of the antenna and power adjustment.
Power adjustment: In order to avoid interfering with normal communications outside the prison, the power of the shielding device needs to be precisely adjusted to cover only the prison area. Too high power will cause communication interruption in the surrounding residential areas, while too low power will cause the signal to slip through the net.
Multi-band shielding:
Band selection: The mobile phone communication bands in different countries and regions are different. The shielding device in the prison needs to select the band according to the local conditions. It is usually necessary to shield multiple bands such as GSM, CDMA, WCDMA, LTE and NR.
Intelligent identification: Some advanced shielding devices can intelligently identify the surrounding communication bands, automatically adjust the shielding range, and improve the shielding effect.
Antenna layout:
Omnidirectional antenna: used to cover a large area, suitable for use in open areas such as the atrium of the prison.
Directional antenna: used to cover specific areas, such as near the high walls of the prison, key monitoring areas, etc. Directional antennas can concentrate signals in a certain direction to improve the shielding effect.
Hidden antenna: In order not to affect the beauty and structure of the prison, hidden antennas are sometimes used, hidden in buildings or on walls.
Signal monitoring and management:
Real-time monitoring: The signal shielding system of the prison is usually equipped with signal monitoring equipment to monitor the signal strength and communication conditions in the shielding area in real time. Once an abnormal signal is found, the system will automatically adjust the working status of the shielding device.
Centralized management: Through the centralized management system, multiple jammers can be remotely controlled for unified management and scheduling to ensure the consistency and stability of the shielding effect.
Maintenance and challenges of shielding technology
Regular inspection and maintenance:
Equipment inspection: Regularly check the working status of the jammer and antenna to ensure their normal operation. Including checking the power connection, signal strength and device temperature.
Software update: Some high-end jammers support firmware and software updates, and maintain the best performance and security of the equipment through regular updates.
Avoid interference with normal communications:
Border control: In the prison boundary area, the signal strength of the jammer needs to be precisely controlled to prevent affecting the normal communication of surrounding residents.
Signal leakage: Antenna layout and equipment installation require professionals to avoid signal leakage to the outside of the prison.
Emergency communication: Considering the need for communication in emergency situations, the shielding system in the prison usually has an emergency channel to ensure that communication can be quickly restored in an emergency.
Application of new technologies
With the advancement of science and technology, mobile phone signal shielding technology in prisons is also developing. Some new technologies are gradually being applied to prison signal shielding systems:
Drone shielding: Prevent drones from transporting mobile phones or other contraband items to the inside of the prison.
Precise positioning: Use wireless positioning technology to accurately locate the source of mobile phone signals in prisons, and use jammers to perform fixed-point shielding.
Artificial intelligence: Use AI technology to monitor and manage signals, improve shielding effects and system intelligence.
In short, mobile phone signal shielding technology plays an important role in prison security management. Through scientific and reasonable layout and management, it can effectively prevent prisoners from using mobile phones to carry out illegal activities and ensure the safety and stability of prisons.
