Telecom Mobile Base Station Environment
Centralized Monitoring System

I.System Scope

This system is developed to meet the needs of remote centralized monitoring of base station environment (electronic lock, alternating current, direct current, temperature, humidity, etc.) or send the dictate from the remote computer to open the door. Also, this system can cater for the environment monitoring needs of warehouse groups, office buildings, residential quarters, hotel and so on.

II.System Architecture and Functions

1) Base Station installs voltage, temperature and humidity sensors as well as electronic door lock. The door is opened by inserting an ibutton cipher key or receiving instructions from remote computers. The sensor and the lock signal are connected to the signal collection controller, which passes the received signal (generally called Base Station Environment Information) to the mobile communication network management center over the transition channel (such as radio channel, 2M digital relay, telephone line, base station special alarming channel).

2) The Network Management Center installs data-processing computers, database server and monitoring management terminal computers. These computers analyze and deal with the comprehensive data of base station, execute real-time display, monitor behaviors of base station environment equipment automatically, send alarm signal once equipment troubles occur, provide timely rush repairs basis, log base station staff in-and-out information and print report forms.

III.Technical Parameters

1) System parameters of Monitoring Center:

- The amount of base stations monitored by Network Management Center: 1000
- Communication mode between base station and network management center: Wireless channel, or External alarming channel, or 2M digital trunk lines, or Telephone lines
- Networking transmission mode: WAN, LAN and Special network
- Database servers of monitoring center: HP series, RAM128M, HD10G×2, 14” color display, WinNT4.0, MS SQL Server6.5, network card 10/100Mpbs
- Front and back computer: Pentium II, 350, RAM 64M, HD4.3G, 14”color display，WIN98，network card10/100Mpbs
- System transmission criteria: signal transmission delay while uploading from base station door lock or sensors to network management center is relative to selected transmission channel, and the optimal time is less than 5sec

2) Power Supply

- AD: 180V~250V or 90V~250V

3) Environment Condition

- Temperature: 0~40
- Humidity: ≤90%

4) Parameters of electronic door lock and controlling modules

- Power supply of electronic lock module: -48VDC
- Power consumption of driving to open electronic lock: DC 5V/200 mA
- Electronic lock on/off status: automatic check and test
- Opening-lock mode: iButton cipher
- Cipher codes modification: Modified using supervising key or through instructions from remote computer
- Working conditions of electronic lock: -40℃~70℃
- Life-span of electronic lock: more than 10 years or switch times >30000
- Locking-up mode: multi-directional
- Electronic lock weight: 1200g
- Electronic lock size： 1180L × 1150W× 25H mm
- Electronic lock body installation: built in the burglarproof door of base station
- Electronic lock module installation: hanging in doors