Technical requirements for signal jammer system

Dojammer 2022-01-04

1. Project introduction In order to meet the needs of the new situation, improve the scientific and technological prevention capabilities of prisons, strengthen the scientific management level of prisons, promote the construction of digital prisons, promote the harmonious and stable development of prisons, and continuously improve the modernization level of prison management, and the mobile phone signal to prisons Carry out control and prevention to eliminate the hidden dangers caused by illegal use of mobile phones.

12 Bands Signal Jammer

2. Project implementation process

1. After the bidding is over, first implement one of the prison projects. After the project is successfully carried out and approved by the owner, the remaining prison implementation order and other related matters shall be separately agreed according to the specific situation. 2. If the winning bidder encounters major technical difficulties or effect deviations that cannot be solved in the short-term during the implementation of one of the prison projects, the original winning bidder shall withdraw and the second winning bidder shall implement it, and so on. If there is no winning bidder, the bidding shall be re-tendered. . 3. Shielded areas and places. Within the prison area, prison buildings, canteens, teaching buildings, arts and family meetings, and other places where prisoners routinely live. Outdoor open spaces and large playground areas are not regarded as places where the mobile phone is used in violation of regulations, and will not be used as a basis for acceptance for the time being. 4. Overall system requirements 1) Act on all current domestic public communication standard mobile phones CDMA, GSM, DCS, 3G (CDMA2000/WCDMA/TD-SCDMA), and shall not affect the normal operation of cell phones, televisions, surveillance and other electronic equipment systems in prisons . 2) Within the scope of each single building in the supervision area, the effective shielding rate should reach 99.9% or more. 3) The normal use of communication, audiovisual, electronic equipment and systems must be ensured outside the supervision zone. 4) The electromagnetic radiation intensity shall not exceed the relevant national standards (GB 9175-88 Environmental Radio Wave Sanitation Standard of the People's Republic of China). After the system is installed and debugged, a test report issued by the national authority must be issued. 5) The system must be a single building with centralized power supply, and a special switch box with a lock device must be provided to prevent artificial power failure. 6) The system must be safe and reliable, with the ability to prevent destruction and continuous operation. At the same time, it must be equipped with a monitoring device for system operation status, and real-time monitoring is carried out in the central computer room through the computer TCP network. 7) Fully retain the output redundancy of the equipment, increase the service life and adapt to future development requirements. 5. Comply with relevant national standards 1) GB 9175-88 Environmental Radio Wave Sanitation Standard of the People’s Republic of China 2) GA/T 75-2000 Safety and Precaution Engineering Procedures and Requirements 3) JCJ/T 16-92 Civil Building Electrical Design Code 4) GB50258- 96 "Code for Construction and Acceptance of Wiring Engineering of 1KV and Below for Electrical Installation Engineering" 5) Standard for cell phone shielding system in prison "Police Technology" 6) GB/T 50311-2007 Code for Design of Integrated Wiring System for Buildings and Building Groups 7) GB /T 50312-2007 Construction and Building Group Integrated Wiring System Engineering Acceptance Code 8) YD/T 5120-2005 Wireless Communication System Indoor Coverage Engineering Design Code 9) YD 5039-97 Technical Regulations on Environmental Protection of Communication Engineering Construction 10) YD 5098-2005 Communication bureau (station) lightning protection and grounding engineering grounding specifications 6. System implementation technical requirements 1) Combine the actual signal distribution on the spot, and use the built-in adjustable multi-band module indoor shielding host. 2) According to the different environmental requirements in the prison, scientifically select the directivity and gain of various antennas; at the same time, make full use of the actual building structure, topography, etc., and choose the erection position, height, and direction reasonably. 3) Control the distance between the main radiating surface of the antenna and the place of personnel activities to ensure that the electromagnetic radiation meets the relevant standards. 4) Multi-band signals must be combined and distributed using combining technology. 7. Performance requirements for the main equipment of the system 1) The main equipment of the system must pass the inspection and certification of police electronic products. It must be a mature product. There are a large number of successful cases in prisons, and provide on-site investigation cases. 2) The operating frequency range of the main equipment of the system must be strictly limited to the downlink frequency band, and it is strictly forbidden to cause interference to other systems. 3) The main equipment of the system must be able to withstand the needs of continuous operation throughout the year in harsh environments, and must have the capabilities of waterproof, moisture-proof, anti-corrosion, anti-pollution, lightning protection, etc., especially the outdoor equipment must have the ability to work in the field. 4) The main equipment of the system must have a strong heat dissipation capacity, especially high-power equipment generally adopts natural heat dissipation, and it is strictly forbidden to use a heat dissipation device that blows or sucks into the cavity of the equipment box. 5) The main equipment of the system must adopt a modular structure, and it must have the functions of protection against open circuit, short circuit and damage of antennas and feeders. If necessary, high-power equipment shall be subjected to destructive short-circuit arc discharge tests to ensure stable operation of the system and future upgrades. 6) The power supply of the main equipment of the system must be directly introduced into the host from 220V, and there must not be any device outside the host that can change the operating state or operating parameters of the system, such as: power adapter (220V to the corresponding power supply), power switch, power adjustment and other components , And all equipment power supplies have protection and self-recovery capabilities such as overload, short circuit, lightning strike, and overvoltage. 7) In view of the particularity of the current TD-SCDMA technology, the system must have TD synchronization equipment and TD synchronization technology. 8) The system monitoring and alarm device can not only monitor whether the power supply is off or not, but also must be able to monitor the working status of each functional module in the shielding equipment. 8. Work requirements 1) Complete the procurement, installation, commissioning, training, and acceptance of the equipment and software required by the system according to the requirements; and after winning the bid, carry out in-depth design according to the requirements of Party A and the actual situation on the site. The entire project should be Turnkey projects. 2) The bidder must provide the accessories, accessories, software, services and work necessary to integrate with other systems required to realize all the performance and functions of the system. For attachments, software, services, and other system integration work that must be coordinated, the tenderee does not need to increase additional costs. 3) After the construction of the project is completed, all parts shall be restored to their original appearance. 9. System main equipment parameter requirements 1) Low-power shielding equipment signal output: 50Ω N block (communication system industry standard) Working mode: continuous transmission power: total 10W Ambient temperature: -40-55℃ Relative humidity: 30-95% host Power supply: AC 160-250V Power consumption: Power ≤50W Weight: ≥6Kg Module installation positions: 5


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