Golden Peak Tip Teaching Evaluation, Video Conference System Solution

User Name: Beijing Pinggu District School Logistics Center

User needs:

(1) The need for monitoring the quality of teaching materials based on district-based, school-based, and student-oriented

(II) Demand for information technology in reducing burdens and increasing efficiency

l Network scoring

Promote the automation of district teaching and research, school teaching evaluation data collection, flexible network marking, including marking task allocation and management, flow judgment, small collection and management; through the use of the latest information technology, in order to achieve:

It can read any test paper, no need to specially design test papers, and reduce the cost of printing each test paper;

Intelligent processing of test papers to reduce workload;

Guarantee the fairness of the marking work.

l Data analysis needs

Data analysis and report feedback on students' examinations and evaluation results are an important part of the district teaching and research and school daily teaching management. It is necessary to help educational administrators, principals, academic directors, class teachers, various subject teachers, students and other roles to provide all kinds of analytical data required. Implementing this work can provide decision support data for educational managers and relevant educational participants, and plays an important role in the academic development of students.

Conduct statistical analysis of the test data to provide academic data analysis reports for the test stakeholders (educational administrators, school leaders, grade leader, teaching and research team leader, preparation team leader, class teacher, class teacher, students);

Generation of various dynamic data reports, data exchange;

Reports from multiple channels are published and viewed.

Application products:

Daruis Flyrish primary and secondary school exam analysis system software, Daruis Flyrish network marking system software, Panasonic KV-S5055C high-speed scanner and New Beiyang BTP-2200E barcode printer.

Technical solutions:

The "Beijing Pinggu District Teaching Evaluation System Solution" program is a series of services and overall solutions for district teaching and research, schools and individual students, for the whole process of academic evaluation business, to meet the business needs of each role; including two types of "network scoring System, data analysis and feedback platform:

• Provide the necessary data and information support for regional teaching quality monitoring and decision making;

Providing procedural data support for the school-based, student-oriented academic diagnosis and evaluation of the school, providing timely and accurate data analysis reports for each role;

• Conduct self-directed learning for families or individual students, and provide personalized chemical industry diagnostic reports and study recommendations.

Figure 1 System networking diagram

Exam Analysis System: For the specificity and needs of regional teaching quality monitoring and evaluation, after 6 years of large-scale application and improvement of various regional educational institutions, our test data analysis system has the following characteristics:

Support data analysis of Classical Test Theory (CTT);

Covering the full-role users of basic education, and analyzing dozens of reports;

Minute level product computing capability;

Covers a variety of teaching roles, targeted and practical analysis reports;

For large data volume, fast cloud computing services, shorten the time of education and teaching decisions, improve decision-making efficiency and effectiveness;

The first comprehensive analysis support system for all kinds of intelligent terminals (computers, tablets, mobile phones, etc.), which is convenient for leaders, teachers and parents to obtain useful decision-making information in a timely manner;

Practical data exchange function, fully compatible with and supports various data acquisition software (network scoring, questionnaire and other data acquisition systems);

The subject sets the data into various analysis categories, analysis parameters, and multi-dimensional data presentation methods for users to select; provides analysis parameters that take into account the actual needs of the school: class categories, student categories, sub-volume attributes, etc.;

Student's list of wrong questions;

Help teachers and students to accumulate the wrong questions in the previous exams, so that teachers and students can conduct targeted learning;

Help the teacher to accumulate the previous test papers, help the different role teachers to store and manage the test papers and test questions of each test, so that the teacher can retrieve the test papers and test questions at any time;

The total statistic statistics of the school year can meet the teacher's weight setting and statistical analysis for the previous semester exams.

Network scoring system: For the different regional marking methods and information environment, the universities and accurate network marking products we provide have the following characteristics:

Commonly used test papers can be read, no need to specially design and print test papers, greatly reducing the cost of examinations;

The order of the test paper is reversed and upside down, and the actual order can be intelligently recognized;

Support scanning and scoring at the same time or sequentially, improve efficiency, and read after the test;

Any time and place to read the paper, the mobile terminal can also judge the paper;

Mask candidates' information, adopt double evaluation or multiple evaluation mechanisms to ensure accuracy, fairness and error.

A variety of means to collect test data: "read first and then scan" - the teacher first read the volume, then through the "teaching quality monitoring cloud platform" for data collection and analysis, "first scan after reading" - first through the high-speed document scanner for the original test paper Data collection, and then through the "teaching quality monitoring cloud platform" for online scoring and test data analysis.

Friendly interface, convenient operation and improved marking efficiency.

Figure 2 Networking system network diagram

hardware equipment:

Configure the Panasonic KV-S5055C high-speed scanner and the new Beiyang BTP-2200E barcode printer equipment. The high-speed scanner mainly completes the pre-scanning answer sheet image, and transmits it to the network marking system bar code printer through the campus network to complete the post-student test number barcode to prevent the students in the traditional mode from filling in the test number.

Effect:

After the project was put into use, it brought two leap to digital education: First, it made an effort to make a comprehensive analysis and diagnosis of the individual students, the academic ability of the group and the teaching level of the teachers, and promote the effective combination of teaching and management for the development of the school. And the teaching decision-making provides services; the second is to realize the unified examination of the unified examination of the whole district by the Education Bureau (using the education metropolitan area network to organize the test, simulation, mid-term, final exams, etc.), apply to separate independent examinations of each school, separate examinations, and the education bureau The district primary school unified examination unified examination (primary school can go to the nearest junior high school to carry out scanning identification settings and then unified review) and other forms of examinations.

Under the premise of not increasing the burden of district teaching and research, schools, teachers and students, and not disrupting normal teaching work, it can be achieved:

ü Comprehensively monitor the overall teaching quality of each school and conduct long-term tracking;

ü Scientifically formulate the overall teaching objectives and teaching strategies of the district and each school;

ü Reasonably evaluate the quality of teaching in each school and class and find the reasons for differentiation;

ü Effectively establish a teaching strategy to build and share a mechanism to balance the level of teachers;

ü Efficiently improve the comprehensive academic ability of each school and each class;

ü Reasonable development and improvement of first-line teaching strategies;

ü Scientifically establish a communication bridge between home and school based on the development of students' academic ability;

ü Establish data and information-driven student personal learning and self-reflection.

User Name: Beijing Daxing District Teacher Training School

User requirements: Daxing Education Committee needs to establish a set of video conferencing system with high stability and good application effect. This system realizes remote video conference and remote training jointly by 200 institutions including Daxing Education Committee, Daxing Education Committee and primary and secondary schools and kindergartens. Remotely monitor image transfer and other functions.

Application products:

Huawei MCU VP8660, Huawei SMC2.0, Huawei Emergency Command Management System Software, Huawei TE50-1080P30, NEC X464UNV 3*6, Konka LED55M3500PDF, Golden Peak Customized Video Wall Server, Fast CR-PGMIII, Fast CR-POWER8III, Fast CROSS- MAX3232, Apple iPad Air MD795CH/A, Hushan-CH504, Hushan-GP404, Hushan-GDS12.8, Hushan-PE4250, Hushan-DS-U16C and Panasonic AG-HPX260MC.

Technical solutions:

The project mainly includes sound pickup system, sound reinforcement system, display system, acquisition system, matrix switching system and central control system. Jinshan Peak upgrades the original embedded hardware MCU (supports the access of 200 HD terminals), configures a set of high-definition video conferencing terminals and all the venues at all venues to configure corresponding cameras and microphones according to the needs of each organization. Apply the relevant sound reinforcement equipment to transform the existing network and support the construction of the expansion system. The construction of high-definition video conferencing system, through the IP network to connect the school of this construction, can hold high-definition meetings between any two locations and between multiple points, improve the overall execution of the Daxing Education Commission and respond to customer demand.

Figure 1 system networking diagram

Figure 2 Networking of major devices between devices

System composition:

Video input

(1) Main venue:

Camera: Design five cameras to capture the entire conference area. Two high-definition cameras are designed in front of the conference hall for the position of the podium. It is used to photograph the panorama of the podium and the podium or the camera-related system to shoot the relevant speakers of the podium. A high-definition camera is installed in the middle of the splicing screen, and the bracket is installed. The camera can take a close-up view of the first row of the venue or a close-up of the speaker in the linkage system. Two mobile cameras are selected at the venue, mainly for the conference leader or the conference site. Shooting.

The video captured by the camera can be displayed as a local playback or transmitted to a remote conference room via a remote video conferencing system.

Auxiliary flow: In the video conference system, in addition to the live video captured by the camera, the video of the portable version is required as a supplementary input for the on-site conference, and the various scenes of the conference such as training, learning, and reporting are satisfied, and the auxiliary stream video source is It can be output as a secondary stream of the local site or as a secondary stream of the remote site. The podium is designed with an input interface. The first stage of the podium and the audience are designed with two video input interfaces. The access object corresponding to the interface is generally a notebook computer, and its universal interface is a VGA interface.

TV wall: The video wall server signal cuts the signal to the large screen splicing processor or the reverse screen through the matrix, and then displays it on the LCD large screen and the reverse screen.

2. Video output

Main venue: In this design, the main display area is 6*3 46-inch LCD splicing wall, and the display area is designed to use two 55-inch TV sets to solve the video viewing problem of the participants in the conference area. The TV sets are played according to the specific scene of the conference. The content can be selected between a local camera video source, a local auxiliary stream video source, a remote camera video source, and a remote auxiliary stream video source. The main display LCD is spliced and fixed on the front end of the conference hall.

Device room: Use 4*3 monitor as the viewing sub-site and main venue polling.

3. Audio input

Audio input processing in the microphone: The conference speaker uses a wireless digital conference system. After the microphone is picked up, it can be broadcasted in the local venue, or it can be transmitted to the remote venue through the video conferencing system.

Auxiliary stream audio source input processing: the notebook auxiliary stream audio source is left and right stereo audio, which is a two-channel audio source, and the microphone audio signal described above is a mono audio source; in this design, the microphone and the auxiliary stream are used. It is connected to the audio processor, and the audio processor processes the audio and outputs it to the conference terminal. The video conference terminal returns the signal to the audio processor, and outputs the audio to the power amplifier and the speaker through the matrix distribution function of the audio.

4. Audio output: Design two pairs of full-range speakers and a pair of ceiling speakers for the conference area. The speakers play local audio + remote site audio; the front speakers are placed symmetrically on the wall of the main display device, auxiliary speakers Hanging on the side walls on both sides, the sound field of the entire venue is even. By interconnecting the audio cable and the audio transmitting device between the equipment room, the pair of main PA speakers must provide 95dB~105dB sound pressure level for the participating area.

5. Video switching: The video signals of the camera, desktop plug, terminal and video wall server are transmitted to the matrix through the cable, and the video signal is switched to the display device according to actual needs. The matrix is controlled by the central control system to realize one-touch switching.

6. Central control system: The central control system is used to facilitate the meeting management personnel to manage the equipment in the field in a unified and effective manner, which is convenient for meeting preparation before the meeting, scheduling during the meeting, and closing of the system after the meeting. If the central control system is not used, each device that needs to be controlled on-site has its own control mode, control software and control interface. In the on-site control of the site, the conference management personnel are easily confused, affecting the efficiency and accuracy of the conference scheduling. The central control system is used to unify the control mode and control interface. The conference management personnel can easily control it, even if the personnel without technical background can be qualified for conference management after simple training.

Effect:

After the completion of the HD conference system of this project, there are two effects that can meet the use of the Board of Education:

First, the sharing effect of teaching resources: After the completion of the construction of the HD conference system, it can meet the diversity of the school's teaching business, and is divided into the daily work of the school, the in-depth application of teaching resources and the live broadcast of the teaching network;

The second is to help improve the use of teaching: other application scenarios of the high-definition video conferencing system completed this time are divided into fast and flexible rapid response methods, emergency video conferences, and other types of conference negotiations (unpredictable emergencies). Prepare adequately in advance to improve the ability of emergency work and remote emergency command.