The first chapter, the school requirement analysis and system construction goal
The first section, the school needs analysis
With the continuous development of modern information technology, the school teaching and management of the original facilities cannot completely meet the learning
The needs of the development of the school. Education management, teaching means and teaching equipment the modernization, and will further improve school teaching
The management level. This period to the construction of monitoring system is a fusion of ordinary monitoring and modern teaching management of the new campus
System, the system adopts advanced signal transmission way, the high quality of the image processing technology and perfect security measures,
Fully meet the requirements of the campus monitoring.
In combination with the practical situation of the original equipment and schools, this period will set up a campus monitoring system, realize the master set
In management and share of independent operation, teaching field, real-time view, examination room functions such as real-time monitoring, teaching evaluation, into one
Step to enhance the modernization of school teaching and management quality, make the school in teaching and management become an intelligent overall.
The second section, the system construction goal
After the completion of the campus monitoring system will be a easy to expand, upgrade and use of teaching management monitoring and evaluation
The network system. This system has realized the teaching field demonstration, examination management, security, real-time digital video and teaching
Organic combination of evaluation function, to fully meet the school teaching monitoring, surveillance examination room, the campus safety monitoring
Want to.
Equipment control main control center for centralized management and combination of each control point of independent operation way, campus monitoring system
System design principle, make every control point to each other, independent operation to achieve its control function. System adopts the module
Block design, can according to the school need to expand and upgrade. Is effective in protecting the investment of the school, and make the system won't
Lag behind.
This monitoring system to achieve specific functions as follows:
1, by installing in the Catholic church buildings A, B, C, D, E, each classroom cameras and A uniform global indoor, ensure real-time shot of every classroom, to monitor the area without blind area, clear image and clear voice, and video and audio signal transmission to the master control center set up line, in order to be able to clearly hear the sound of the each classroom, need to install A high keep in every classroom pickup.
2, set up campus monitoring system of main control center, the main control center through the main control software of the monitoring system for each camera point to monitor and control, and can be arbitrary for synchronous digital camera to the video store, to look at any time in the future. This function at the same time as the test order monitoring, teaching evaluation and daily classroom security, its essence is through adjust the master host stored data to verify in the whole process of events, evaluation, so as to achieve effective management.
3, the principal's office and the rest of the school house set as control points, in each control point of the ordinary by installing on a computer monitor system of vice control software to realize the various camera point to access and control, to realize real-time assessment of classroom teaching is to achieve the efficiency of the management, provide and openness. As a share of the principal office in the center of the monitor at the same time can directly, and master for voice intercom, exchange of information or instructions.
4, the personnel on duty can through the computer screen monitor multiple sites, in case of abnormal situation at the same time, the system will immediately report to the police and automatically record what happened to the computer, so that retrieval later replay. Through the school's local area network (LAN), the principal or other permissions management can observe the scene at the same time, and you can video, even after work, or traveling, also can be observed through remote network, direct observation to the real situation of the school. In the case of unattended, can let the monitoring system of abnormal, due to the motion detection technology, the system USES only into monitoring area of moving target is recorded, so it is save disk space. Record video data joint with date/time information, convenient accurate tracking check later. If monitoring host on the Internet, it allows those with permissions using a dedicated remote monitoring software or general web browser for remote monitoring, much like a web camera, distinctive school can through this system to show the world their own campus wind model.
5, electronic monitors
The campus network examination room centralized monitoring system is introduced
Examination room centralized monitoring system are the latest international of the third generation of digital video monitoring system based on network products, completely overcome the shortcomings of the traditional analog monitoring system, and on the function and performance better. This system mainly using the latest computer processing technology, the front end of the examination room audio signal coding compressed into digital signal transmission through the network to the monitoring center, and then in the monitoring center will digital signal reduction into audio signal and display.
Low monitoring functions
Through the campus network, can directly see each on examination room monitoring center computer classroom, can also be the situation of the classroom to switch to the TV to watch on the wall.
Low image segmentation round tour functions
Do not need to image segmentation, matrix switch control equipment, video monitoring system through the network management software, can realize the video images with screen display segmentation (1, 4, 9, 16 road), round tour shows more groups of picture.
Low examination room monitoring
Through the network video monitoring system management software, the scene of each test separately to switch to the TV monitor on the wall, or forward the control instruction, adjust the camera focal length or yuntai details of local observation.
When a video
Any test scenarios can be real-time or timing video, video or manual start-stop, alarm trigger video, video storage media as the computer's hard drive, video disk capacity of the space can be set up, and have automatic override function.
Low intelligent retrieval playback
Can press time, the test number, camera, alarm event condition such as intelligent fast retrieval playback recorded video data, playback frame by frame, slow play, constant speed, fast and enlarge/reduce a variety of ways, and can be arbitrary a playback stored image into a JPEG or BMP format images, used for data exchange or printout.
Low character superposition
Video on every road, can real-time overlay scene happened time and source, make the scene more complete information.
Low scene captured
In regional monitoring center master each control point in a computer or network computer to check the process, can at any time of window image of abrupt scene images captured preservation.
When this function
In the monitoring center can by the classroom with a microphone voice intercom, or active classroom for propaganda.
Low rights management
The operating rights classification management, according to the nature of work for each user gives different permission levels, system login, authority inspection operation, ensure the safety of the system.
When the principal control
The principal control computer through office can choose to see any screen in the examination room discipline.
Cruise on low remote network
The superior invigilation centre staff through the Internet (or wan) can monitor remote real-time sampling of the examination room.
The second chapter, monitoring and control system design
The first section, the principle of system design
According to the goal of campus monitoring overall construction, system function, technical performance indicators, etc., this solution to satisfy the practical application as a starting point, USES the existing communication network in terms of video transmission in order to reduce the cost of the system to the greatest extent. System design principle is as follows:
Stability, reliability, low system; The selected hardware selects the advanced, mature, reliable products, and has good operation performance.
Low system advancement; At present the most advanced combination of software and hardware, and make it easier for system compatibility, upgrade, expansion, and adopt module design is simple to maintain.
The real time and low system operability; All all use standard WINDOWS window operation, and make the signal in real time to upload, truly real-time.
Low maintenance free; Through the modular, hierarchical design can be the basic elements of a system of free maintenance.
In the second quarter, monitoring system function
1, master control room has the function
1, equipment management, monitoring, scheduling, and the classroom cameras state inspection, etc.
2, decentralizing control consoles can display any indoor and outdoor of the audio-visual information.
3, can be arbitrary control point to the camera, selecting the best Angle and distance, such as front-end adopt cloud mirror control mode can realize).
4, can be on the computer screen, can also be used in large screen TV field condition monitoring shows that each point on the wall.
5, through the mouse to click single cycle can switch the image, or more pictures show more image segmentation.
6, for monitoring to all or part of the classroom, digital hard disk video recording the scene content.
7, can be in the digital hard disk video host shall be carried out in accordance with the time, date, classroom intelligent retrieval, quick see video footage.
2, uniform control point has the function of principal office
1, deputy can switch control host computer, see any indoor and outdoor of the audio-visual information point to point.
2, can be arbitrary control a camera point to point, choose the best Angle and distance, such as front-end adopt cloud mirror control mode can realize).
3, can be arbitrary viewing video data before.
4, the system can be set, such as the camera color, contrast, saturation and video, video time pattern, etc.
5, can undertake voice intercom and main control center, real-time command.
The third section,
The value function of campus monitoring system
Campus monitoring system can not only realize the common monitoring system has security monitoring, electronic test center, digital video, and other functions, can also be making use of the system to provide the other functions of the school to further strengthen the school's teaching and management, maximize the built in campus monitoring system play its important role.
Campus monitoring system of the additional features are:
1, in the center of the master, each control room to view class, so as to ensure the personnel of view class discussion will not affect the classroom teaching, at the same time also can truly reflect the situation of classroom teaching.
2, in order to strengthen school management of the monitoring system, can be set to the principal points and control system software, to the principal's office with the highest authority; The principal can be to each other on the main control system control system for authorization, without authorization control end will not be able to enter the monitor and control system, it will effectively put an end to the improper use of monitoring and control system.
3, the principal or the other to a long-distance business trip, if any, will log in at the classroom at any time through the INTERNET network, remote management; Similarly, other sister universities, also can be accessed through the INTERNET network login my school a public class classroom teaching, teaching interaction and communication, improve the teaching level.
4, will be monitoring system connected to the school to two-way control the original system reasonable, the school orientation or grouping of television and radio. Can be any class in the class meeting, cultural activities and so on to the school other live classroom; Multimedia in the classroom or sub control software installed on the computer, each classroom as a share of the access to other images and sounds of the classroom.
5, arbitrary control point on the university's website authorized also can through the computer to listen to, watch the classroom teaching.
6, in the future as involving the night security guard against theft, on the basis of the existing monitoring system must add alarm equipment, video alarm linkage function can be realized. Way of its implementation is in the key area of campus, such as the walls around, focus on the classroom or financial room, archives and other key protection area to install infrared sensor and main control center connected to the host, once triggered alarm detection equipment was broken into at night send out alarm signal immediately and start the video. This feature is only for the use of future system expansion
The fourth quarter, campus monitoring system composition and design
This campus monitoring system can be integrated image, sound, and computer software for a suit, on the basis of full use of original equipment, realize the real meaning of campus monitoring, actually use and powerful function and reasonable design, can be an investment in place, also can be overall planning, distribution, put an end to repeat investment, reduce the construction cost. And school of existing computer network and CCTV system organic, seamless connection, give full play to the monitoring and control system of the effectiveness of teaching and management. System operation, management, use, maintenance is simple, convenient, investment in effective protection school at the same time, keep the ability of updating the system, simplifies the network structure, make the hierarchical network structure, standardization, standardization.
A, master control room design
1, the camera and display of the image control point to point
Master control room is the signal control system and information exchange centre, place in the master control room 13 mainframe control monitoring and control system, digital hard disk video host, the device is the core of the system, its hardware and software part of realizing the administrator to the system for scheduling, management and control.
Front end cameras if yuntai, decoder installation is used, the host can be controlled by RS232 and RS485 communication conversion interface, the cloud mirror control signal (signal) about yuntai rotation, lens tensile transmission to the decoder, decoder will crack control code for it again only corresponds to a certain road cameras, yuntai, at the same time provide a regulated power supply. In this way, the control host and to control the movement of the head, and the flexibility to monitor the situation point to point.
Front end cameras for fixed installation, namely do not need to yuntai, decoder and other auxiliary equipment, directly to the camera mounted in a specific location, adjust good fixed focal length, you do not need to control the host achieve the function of the rotation of the camera and lens tensile.
Control host has a variety of screen display mode, single mouse click done, simple and convenient. Has a single cycle, according to four road, nine, ten six-way shows segmentation, etc
2, digital hard disk video store
Master control room installation of 15 sets of digital hard disk video recorder, collected in front the camera can be converted to a digital signal and all kinds of graphics and sound real-time compression into h. 264 stream stored in hard drive, every road image resolution of 352 x 288, 25 frames per second, total resources of 400 frames, and can ensure real-time single audio and video playback, most every way signal can be digitally store at the same time.
Digital hard disk video recorder with real-time monitor, real-time video, real-time video reproduction function, at the same time can be adjusted according to the image quality of any video reproduction compressed storage capacity per hour. When making important exams, such as for the college entrance examination, digital hard disk video recorder has big hard disk can guarantee to the examination room during the test for continuous recording non-stop, record the exam content clearly. In 30 days in order to ensure the continuous video eight hours a day, 200 m per hour per road footprint calculation, 200 m * 16 * * 8 hour 30 days = 800 g/units, namely each 16-way host install 6 block standard system with 500 g hard disk hard disk.
In peacetime class excellent teachers' teaching situation can be recorded in real time, for the future research are discussed.
Need to find the video data, the function of video host search function is extremely convenient, according to the camera to find a road, or find on, or look for several minutes, a few seconds can accurately check the needed image data.
In addition, digital hard disk video recorder with the recording system, record the audio files can be carved into a CD, permanent preservation.
B, each control room design
The school is equipped with the principal's office, the teacher's office, and other points and control points, as long as in ordinary office points control system installed on the computer software and switching controller is connected with the campus network, the implementation of every control point to point.
Master control center set authorization management function, ensure that monitoring and control system to control the strict management, the principal has the highest priority in monitoring system, and can be authorized to other control point. Without authorization control cannot access end camera control system and control function.
Not only supports local LAN access control function, also support the INTERNET remote access and control, its supreme authority and in the same network, the function can meet the staff travel need to access and control in other cities, other schools also can through the wide area network and control software field criticism, in order to further improve school teaching competition mechanism, promote the improvement of education teaching level.
C, design point to point
Using yuntai control mode, the selected camera for integrated cameras, namely color video camera built-in 22 times / 27 times electric zoom lens, the two parts together. The integration is the outstanding characteristic of the camera, high resolution, more x optical zoom and digital zoom, automatic aperture. Automatic aperture adjustment function, can according to monitoring the light and shade to automatically adjust the aperture, can clearly display image details. The configured yuntai horizontal Angle can reach 355 degrees, the pitch Angle of 90 degrees. Monitor head using high sensitive and high fidelity high-quality imported pickup. Equipment selection to fully guarantee the monitoring and no blind area, the image is clear, clear sound. There are a lot of flexibility is relatively fixed installation of cameras.
Classroom cameras, lenses, shield, bracket installation in one corner of the classroom, the video signal transmitted to the monitoring center by coaxial video line of digital surveillance video host; The monitoring center for the front camera unified power; Points control through local area network (LAN) in computer control functions; Uniform global classroom indoor installation, basic functions, the first is the second speed is moderate, smooth operation, the third is the precise position, the fourth is to have active infrared night vision function.
The third chapter, security monitoring and control system design
In this campus monitoring system, in order to guarantee the safety of the system, put forward the following design criteria:
1, in order to prevent the improper use of the monitoring system, into the control system are set on the respective authentication, only passed the authentication of various functions. System, we set the principal with the highest administrative authority, can be authorized to various monitoring points, only authorized sub control points to monitor and control point to point. In this way, can eradicate the root of the use of monitoring and control system for all wrongdoing.
2, for system power management, we suggest that in the center of the master unity for the camera power supply or put inside shaft, to prevent human front-end power. The selected 12 v / 10 a camera power supply can provide stabilized voltage supply for 8-10 cameras. Due to the master control room has 15 sets of digital hard disk video recorder, about more than 200 camera points, so it will take about 20 power supply.
3, the classroom decoder power supply way we proposed two options: local power supply way and way of centralized power supply.
(1) to the local power supply mode, opening and closing by decentralizing control of decoder power supply.
(2) using centralized power supply mode, the decoder of point to point power opened and closed by the master control room and unified control. Need to separate from the master control center laid a power cord connecting the decoder of point to point.
4, digital video security strategy: we adopted by the digital hard disk video recorder system crash prevention functions such as automatic restart, restart when power supply drop, and permissions Settings, data backup and video loss alarm, etc. Can be in 16 road image source any authorization, the implementation of digital surveillance and video. When failing to record the image in an alarm system prompt, notify the user error source of the image and the information such as the duration of the error, and guide users to adjust equipment.
