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1.1 The Necessity of the System With the development and popularization of computer technology, the number of computer systems is increasing day by day, and the supporting environmental equipment is also increasing. The computer room has become an important part of major units. The environmental equipment of the equipment room has increasingly strict requirements on temperature, humidity, and safety. This is the basic environment that ensures the normal operation of the computer system. Once the engine room environment equipment fails, it will affect the operation of the computer system, and it poses a threat to the reliability of data transmission, storage, and system operation. If the accident is serious and cannot be handled in time, it may damage the hardware device and cause serious consequences. For a unit room like China Mobile that needs to exchange data in real time, the management of the equipment room is more important. Once the system fails, the economic loss caused is incalculable. At present, many computer room management personnel have to use 24-hour personnel on duty, regular inspections of the engine room environment equipment, which not only increases the burden on management personnel, and more time, can not be timely troubleshooting, no time and responsibility for the accident and science Management.
1.2 design basis computer room centralized monitoring user requirements computer station site technical conditions GB2887-89
1.3 Design Principles System Selection High Starting Point Technology Advanced: Selecting the Most Professional Manufacturer Product System High Reliability: The hardware and software of the system adopts a mature technology Product System Operation and management is convenient: Software system culture, easy operation, strong technical support ability : The construction unit has strong technical strength, and the service improvement system has strong expandability: The modular structure is conducive to expansion and expansion. Less investment: System selection has high performance and low cost compared to the construction time: the installation and commissioning of the system is completed within a short period of time.
1.4 Functional Requirements Room Environment: Image and temperature monitoring of the equipment room: The image of the computer room is monitored intermittently and transmitted.
Centralized monitoring: centralized monitoring of the above content through computers.
2 computer room monitoring system
2.1 Overview
1#-5# room temperature and humidity monitoring and video surveillance between room and server channels.
2.2 System composition System consists of digital temperature and humidity sensor, industrial computer, display, large-screen LCD display, configuration network, protocol conversion module, serial capture card, monitor bracket, industrial electrical distribution box, video card, color dome camera , console, video distributor, video plugs, video lines, speakers and sound cards and shielded lines and other components.
3 Design Plan In line with the principle of establishing a safe, practical and advanced machine room monitoring network for users, we will discuss the design scheme in the following sections based on the actual situation of the user.
3.1 Monitoring System Structure The system is divided into two layers: the monitoring center and various monitoring equipment on site.
monitoring Center:
The monitoring center consists of IPC, monitor, console, large-screen LCD display, serial capture card, monitor support, protocol conversion module, video recording card, video plug, video cable, speaker and sound card. The monitoring center will collect all real-time data, video streams and alarm content, and respond to all events in a unified manner.
The monitoring host and the smart device are connected via RS485/232 or network. The master-slave mode is used to communicate with each other through the communication protocol to obtain real-time data of each device, which facilitates immediate response to events.
Monitoring site:
Digital temperature and humidity sensors and color dome cameras.
3.2 Monitoring objects and contents According to user requirements, the main monitoring contents are as follows. The following will introduce each monitoring subsystem separately:
3.2.1 Room Temperature and Humidity Monitoring System
3.2.1.1 General description: For a large room, due to the influence of air flow and equipment distribution, the temperature and humidity values ​​will be different. The temperature and humidity sensors should be determined according to the actual area of ​​the host room and the actual placement of the server. The number of detected temperature and humidity in the room. 
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China Mobile Computer Room Monitoring Program
1 Overview
Through the linkage between the sensor and the IPC in the main monitoring room, real-time display of the temperature and humidity in the equipment room can be realized. When the preset value is exceeded, the system will send out an alarm sound to remind the site management personnel; and the system can be reserved inside the software for future expansion needs. A wireless cat communication interface is provided, and a wireless cat card slot is reserved on the hardware so as to facilitate the need to implement an SMS alarm function in the future.
3.2.1.2 Temperature and humidity system monitoring The rough structure diagram is as follows:
3.2.1.3 Hardware Configuration: According to the actual area of ​​use of the server room, the specific configuration of each room sensor
1# computer room: The actual usage area of ​​the server is about 100 square meters, and a temperature and humidity sensor is installed at 10/ m2. Then 1# machine room needs 10 temperature and humidity sensors, and another 1# machine room also separates out a small single room. About 13 square meters, there is a need to install a temperature and humidity sensor, so that the total number of temperature and humidity sensors required in the 1# room is 11 .
The structure is as follows :
Room 2# : The actual area of ​​use of the server is about 60 square meters, and a temperature and humidity sensor is 10 square meters, so 6 temperature and humidity sensors are needed.
The structure is as follows:
3 # room : The actual use of the server area of ​​about 180 square meters, a temperature and humidity sensor / 10 square meters, so you need 18 temperature and humidity sensors.
The structure is as follows :
4# computer room : The actual use area of ​​the server is about 200 square meters, but the existing area of ​​4 rows of servers is about 80 to 90 square meters, so a temperature and humidity sensor of 10 square meters requires 8 temperature and humidity sensors. If you need to take into account the server to be installed in the future, that is, the remaining four rows of servers, the overall need for temperature and humidity sensors is 16.
The structure is as follows:
5# computer room: The actual usage area of ​​the server is about 300 square meters, and there are 12 rows of servers. However, there are only 1 rows of existing servers , and the area is approximately 10 square meters. Two temperature and humidity sensors are required. If you consider the server to be added later, the overall required temperature and humidity is 30 .
The structure is as follows:
Description: 1# - small squares in the 5# room represent the JCJ100N temperature and humidity sensor
3.2.1.4 Temperature and Humidity System Structure
3.2.1.5 Single Temperature and Humidity Sensor Wiring Diagram
3.2.1.6 Temperature and Humidity Monitoring System Topology
3.2.1.7 Configuration Software Functions and Interfaces
Collect and display temperature and humidity signals from each computer room through a computer;
* Per-point temperature or humidity limit speaker alarm; (can be set to include the upper temperature limit, the upper limit, the lower temperature limit, lower and lower limits; humidity upper limit, the upper limit, the lower humidity, the humidity lower and lower equivalent value);
* Display temperature and humidity history curve data for each point;
* Display real-time recording curve of temperature and humidity at each point;
* It can display real-time sampling data of temperature and humidity at each point; (when over-limit alarm, the speaker sounds alarm at the same time, the corresponding data of the screen changes color and flickers);
* The temperature and humidity history curve data of each point can be displayed; (The curve of the temperature or humidity of the points to be displayed in the coordinate system can be set, the color, thickness, length of time axis, start time, etc. of each curve can be set);
* Each temperature and humidity data configuration report can be generated. It can also be automatically converted into a *.TXT file package and placed in a designated shared folder for other computer calls on the LAN.
software interface
3.2.1.8 Product Parameter Performance
JCJ100N Digital Temperature and Humidity Sensor
Working power
12VDC±10%
working environment
Humidity: 5 to 95% RH No condensation Temperature: -40 to 80°C
Temperature Sensor
Platinum resistance Pt100
Temperature measurement range
( 0～50 )°C
Measurement accuracy
Pt100: Better than ± 0.5°C ( 0～50 °C )
Humidity Sensor
Humidity-sensitive capacitor HS1101 uses a patented solid polymer structure
Operating temperature
( -40～80)°C
Reaction time ( ta)
Typical value < 5s
Long-term stability
Typical value 0.5% RH/year
Effective measurement range
10 to 95% RH
Measurement accuracy
± 3% RH (20 to 95% RH, 20°C without condensation)
output signal
RS485 interface
Transmitter power consumption reference
12V/50mA , 24V/50mA
Transmitter material
ABS Plastic Dimensions: 120×80× 42mm
colour
milky
Weight
90g
installation
Wall-mounted
This product can be connected to the serial port of the computer through the standard DB-9 interface. When the transmission distance is 15 meters, the symbol distortion rate is only 4%; when it is connected to the serial port of the computer through the standard 485-232 conversion interface, the transmission distance is 1500 meters. The symbol distortion rate is less than or equal to 4%, which is in full compliance with the EIA (America Electronics Industry Association) serial bus standard. When using long-distance transmission, it is best to use shielded twisted pair.
3.2.1.9. Industrial Control Machine:
Brand and Model: Lenovo Tiangong 610H
Features:
P4: Intel Pentium 4 processor
CPU frequency: 2.4GHz
Memory: 2.56M
Hard Disk: 40G
Operating System: windows 2000 service
3.2.1.9 Comparison of Performance of Similar Products
Ø       Comparison of JCJ100N and Switzerland integrated SHT temperature and humidity sensors:
Ø       JCJ100N: The integrated design of the output signal, integrates the temperature and humidity communication circuit, and directly outputs the standard RS485 signal. No other data acquisition card and other collectors are required for data acquisition. The serial port of the computer can be directly read by the computer to facilitate the use of the client. 485 data signals can be directly transmitted without the relay 1200 meters, good anti-interference performance.
Ø       SHT: small size, integrated design, I 2 C signal output, the signal transmission distance of up to 7 meters, the signal can not be directly read by the computer, in the middle must be added to a collector, the collector and the sensor must be a one-to-one correspondence , Through the collector into a computer can read data, increase the cost, inconvenient to use. In addition, the product temperature sensitive components and circuits are integrated on a circuit board of approximately 1 square centimeter. In actual use, the heat of the circuit itself will affect the accuracy of temperature sampling. The temperature parameter of the product is a theoretical parameter, in real standard time, and the ambient temperature. There will be more than one degree of error, which is the biggest reason why we do not use this form of temperature measurement.
3.2.2 Video Surveillance
3.2.2.1 Overview: Real-time monitoring of the monitoring environment, reducing the amount of data storage and reducing hard disk storage space in the absence of static conditions.
3.2.2.2 Based on the user's situation, we can refer to the structure diagram of the 1#-5# room temperature and humidity sensor to determine the number of cameras used. The video signal of the camera camera can be sent to the monitoring center via the network.
The 1# engine room has 2 rows of aisles and 4 rows of server channels, so 6 cameras are used.
The 2# engine room is a one-aisle aisle, two-row server channels, and one pillar, so four cameras are used.
The 3# machine room has 2 rows of aisles and 8 rows of server channels, so 10 cameras are used.
The 4# engine room is a 2-row aisle with 3 rows of server channels, so 5 cameras are used.
The 5# room is a row of servers, so use 1 camera.
3.2.2.3 Simple structure diagram
3.2.2.4 Single Camera Wiring Diagram
3.2.2.5 System Functions
Through the computer to each room for video signal acquisition, display, storage;
* Real-time monitoring, but in the case of mixed code, reducing the amount of data storage in the absence of static conditions, thereby reducing disk storage space;
* Can display each monitor point screen at the same time;
* Each monitor point screen can be enlarged and displayed.
3.2.2.6 Equipment Parameter Description:
* Industrial Control Machine: LHV-DVRI28CA-P5
Main processor
Intel microprocessor
Operation interface
Graphical menu operation interface, support mouse, keyboard operation, set the theme color of the menu
Video input
Supports 28 channels of composite video (PAL/NTSC) BNC (1.0VP-P75Ω)
Video standard
PAL (625 lines, 50 fields/second), NTSC (525 lines, 60 fields/second)
system resource
Simultaneous multi-channel recording, simultaneous video playback, simultaneous network operation
Image Resolution
PAL/NTSC real-time monitoring 704 X 576/640 X 480 (monitoring 352 X 288/320 X 240) video playback 352 X 288/320 X 240
Motion detection
Regional settings, each screen can be set to four detection areas (any size)
Image Compression
MPEG4/H.264
Video recording speed
Real-time mode, PAL system adjustable from 1 to 25 frames per second, NTSC system adjustable from 1 to 30 frames per second
Quality
4 gears adjustable (10 grades can be set)
hard disk
Built-in 2 IDE interfaces, expandable built-in 8~12 large-capacity hard disk
take up space
Audio and video, 90~500M bytes/hour
Network Interface
RJ45 10M/100M adaptive Ethernet port
power supply
220V, 50HZ/110V, 60HZ
Power consumption
400W
Operating temperature
- 10~+55 degrees Celsius
Use humidity
10%~90%
Atmospheric pressure
86kpa~106kpa
size
4U Standard Industrial Chassis 610X480X175
weight
28KG
Installation method
Rack mount, desktop mount
* Color dome camera LHV
Image Sensor
1/3" SONY Spuer HAD CCD
Sensitive area
4.9mm×3.7mm
Effective Pixels
PAL: 500 (H) × 582 (V) NTSC: 510 (H) × 492 (V)
signal system
P system / N system
Horizontal Resolution
420 TV line
Minimum illumination
0.8 Lux/F1.2
Signal to noise ratio
Greater than 48Db
Shutter speed
1/50s (1/60)~1/100,000 seconds
White balance
Automatic tracking of white balance
Lens
Standard 3.6mm, can be changed to 6mm, 8mm, 12mm
BLC
Built-in
Video signal output
1.0Vp~p75Ω (BNC)
Power required
DC12V
Power consumption
12mA
size
Ф 106mm×76.5mm
Video interface
BNC
* Video distributor
Function: Multi-channel video signal can be sent to multiple display and control devices
* Protocol conversion module (RS485/232 )
The RS-232 communication distance can be extended to a distance of 1.2Km, which is used to form a remote multi-machine communication network between PCs and between a PC and a microcontroller.
* supporting display instrument with industrial control
17 inch Samsung selection indicator, and IPC supporting small display
* Large-screen LCD monitor
Through the large-screen LCD monitor, the temperature and humidity of each point can be clearly observed.
3.2.2.7 Overall Structure
To sum up, using this set of monitoring integrated system has the following characteristics:
1) Through a simple browser interface, real-time information can be accessed in all rooms on the monitoring system network.
2) Complete configuration method, complete configuration tools, simple operation, no need for programming and expansion of monitoring points, can avoid system instability due to human factors, and ensure stable and reliable system operation. The new system configuration method makes it easier and more convenient to set up and maintain the system. It requires no programming personnel for the assembly process, but skilled technical engineering personnel, to minimize engineering costs, and make the system have an excellent performance-cost ratio. Easily and easily implement system maintenance upgrades to ensure service quality.
3) Improve work efficiency and management quality.
4) Ability to exchange data with office automation systems and management information systems.
5) The system integration can use the integrated wiring system directly, the network expansion and upgrade is very easy, and the workload of maintenance and training is small.
3.3 The difference between the bolt camera and the dome camera
The difference is internal structure, imaging principle and application environment; in addition to the network camera, other cameras can be shared in principle, mainly based on the use of the occasion to select and use.
The majority of the camera is based on infrared light, and it can be monitored mainly when there is no light. The indoor surveillance is mainly based on global video cameras and hemispherical cameras. According to the actual application of the user, we use a dome camera. This camera is suitable for: well-lit corridors, offices, computer rooms, factory buildings and other indoor places.
3.4 storage space algorithm
Ø according to the code rate = 1024KBPS (software can be set, the typical application is 768KBPS)
Compression format: CIF format (the rate of quality effects DVD effect)
Acquisition rate: 25 æ¡¢/s
By bit rate per channel per hour of hard disk storage space 450M
That is: 26 channels X 24 hours X450M = 280G
1200G/280=4.2 days
According to the code rate = 512KBPS (the rate of image quality effect VCD effect) to calculate the space per hour per channel 225M
That is: 26 channels X24 hours X225M=140G
The 1200G hard disk can hold 26 channels of data for 8.4 days.
The host can drive up to 4T hard drives, such as increasing the hard drive to 4T can store data for about 28 days.
1T=1000G
Note that the actual number of days that this algorithm is conservative for the algorithm will be greater than the calculated value
5 Product Quality and Engineering Quality Assurance
In strict accordance with the ISO-9000 series of standardized management, strict quality control. Rely on management to promote quality, rely on quality to expand the market. And achieve the following quality objectives: factory products to 100% inspection, 100% qualified.
5.1 Product Quality Assurance:
The quality system was established in accordance with the ISO-9001 standard. The organization of the quality system was stipulated, the quality responsibilities of various departments and positions were clarified, and the quality of the whole process of product formation was controlled so that the control content was procedurally and documented. The management elements include management responsibilities, quality system, contract review, product flow control, product inspection, and quality records.
5.2 Project Quality Assurance:
In accordance with the basic requirements of the ISO-9000 standard and engineering-related design specifications, project construction and organizational design are carried out.
The description of the project includes the system configuration, the interface relationship between the subsystems, and the related construction technical requirements.
Secondary engineering survey design, including equipment installation and construction design, cable laying design, with floor plans, cable channels, cable bridge over the shaft and related drawings and technical requirements coincide.
The construction layout includes the completion of secondary design and assessment, preparation of construction, commissioning documents, equipment, and devices related to the construction of the project, and it is delivered to the user for acceptance and safekeeping.
The tasks of construction work, preparation of construction tools, entry of construction personnel on the site, and application for start of construction report are clearly defined.
Construction schedule, staff division and quality job responsibilities.
Equipment commissioning, system joint debugging strictly according to the equipment user manual and system commissioning outline, and save the original record, prepare the system commissioning report, submit the user archive
The system is delivered and accepted and submitted to the user for acceptance in strict accordance with the acceptance technical conditions, including video transmission systems, system software and other hardware and software equipment. Both parties recognized and signed the relevant acceptance documents.
6 Technical Support and Staff Training
Provides core device user manuals, instruction manuals for purchased equipment and equipment, and operating instructions for the software.
On-site installation by the company to send the relevant technical personnel on-site guidance, including equipment installation, sub-system debugging, system joint adjustment, cable laying and so on.
Free training for user operation and maintenance personnel, one-week training before equipment arrival, basic understanding of the product's functions and related technical indicators, and preliminary operation and use , and further achievement during equipment commissioning and system joint debugging Skilled use and easy maintenance.
If the user has special requirements for system expansion or secondary development in the future, technical support is required and training courses will be set up for specific needs.
7 after sales service
The product warranty period for the contracted equipment is 12 months after delivery . During the warranty period, due to problems with the quality of the product, the company will repair it for free and the company will be responsible for the cost.
During the warranty period due to user problems, we provide convenience, on-site processing within 24 hours, the cost of users.
After the warranty period expires, due to improper operation of the equipment , the company responds within 24 hours. Our company is responsible for repairing and the user is responsible for the cost.
Our company will respond to the needs of users at any time, can arrive at the scene in the shortest time, maintain the normal operation of the system to ensure the normal operation of the user equipment.
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