A dual-channel high-reliability tablet question bank system for knowledge competition

Abstract

The utility model discloses a dual-channel high-reliability tablet question bank system for knowledge competitions, including a question bank system server host, a tablet computer, a WIFI router and a LORA wireless communicator, wherein the question bank system server host communicates wirelessly via the WIFI router, the question bank system server host and the tablet computer are both connected to the LORA wireless communicator, and the question bank system server host and the tablet computer communicate wirelessly via the LORA wireless communicator. The utility model adopts WIFI and LORA dual channels to transmit data in the competition, ensuring that data transmission in the competition is real-time and reliable, greatly improving the security of the entire competition interaction.

Description

Technical Field

[0001] The utility model relates to a question bank system, in particular to a dual-channel high-reliability knowledge contest tablet question bank system. Background Art

[0002] Knowledge contests, with their high participation and competitiveness, can encourage and guide students' enthusiasm for learning, strengthen knowledge dissemination, and deepen students' learning and understanding. They are very popular among various units and are currently developing in the direction of specialization, large-scale, and interactivity.

[0003] In the past, large-scale knowledge contest systems could only expand or copy the screen content to display on the big screen. If the contestant's seat also needed to display the question content on the big screen synchronously, a VGA or HDMI wired extender could only be used to copy the content on the big screen to display on each contestant's monitor. This method could only display the question content synchronously, but could not allow contestants to directly enter answers on their own monitors. In this way, question types such as mandatory questions for all participants and exam questions could not be realized, and more complex interactive functions could not be realized.

[0004] In addition, the use of VGA or HDMI extenders is wired extension, the wire price is high, the transmission distance is limited by video signal attenuation, and an additional monitor and AC 220V power socket are required, which makes wiring troublesome.

[0005] The existing tablet computer question bank systems on the market also have some problems:

[0006] 1. The web version needs to access the external network server. The disadvantages are: A. Some organizers do not allow access to the external network, so it cannot be applied. B. Due to the limited transmission speed of network signals, there is a certain delay, which leads to slow speed and poor consistency of some terminals. C. If the network is disconnected during the competition, the competition will be interrupted.

[0007] 2. Using an internal LAN, the terminal accesses the internal server through the LAN to obtain data. This method is more reliable than the web version, but has the following disadvantages: A. The WI-FI signal is unstable, and there will be problems such as disconnection and signal strength and weakness. It is not particularly suitable for applications such as knowledge contests that require high real-time performance; B. The carrier of the WI-FI signal is 2.4G and 5G, with high frequency, short wavelength, and short transmission distance, which can generally only reach a transmission distance of about 10 meters. The penetration ability is poor and it is easily blocked by human body, walls, etc. If the competition venue is large, the terminal at the edge may have unstable wireless signals, which will affect the reliable display and answering of the answering system.

[0008] 3. Tablet computers generally do not have Ethernet ports, so reliability cannot be improved by connecting to a network cable.

[0009] 4. During the entire quiz contest, the contestants need to view the screen content throughout the whole process. The screen is always lit, which consumes a lot of power and consumes electricity quickly. Generally, each quiz contest requires debugging tablet devices, transmitting questions, rehearsals, and formal competitions, and each event takes a long time. In addition, many Android tablets use ultra-thin designs, and their built-in lithium battery capacity is limited, generally only 5000-6000MAH. If you encounter a competition scenario that requires continuous use in the morning and afternoon, the built-in battery capacity is often not enough. It is inconvenient to charge with an AC charger at the competition site, and users are also disgusted. Therefore, in actual activities, it is necessary to consider the need to replenish the tablet with extra power.

[0010] Therefore, developing a dual-channel high-reliability knowledge contest tablet question bank system has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0011] The utility model is to solve the above-mentioned shortcomings and provide a dual-channel high-reliability knowledge competition tablet question bank system. The system adopts WIFI and LORA dual-channel design, which can greatly improve the reliability of the competition system and achieve the purpose of real-time long-distance transmission in competition activities. It also solves the problem of insufficient battery capacity and insufficient battery life of tablet computers.

[0012] The above-mentioned purpose of the utility model is achieved through the following technical solutions: a dual-channel high-reliability knowledge competition tablet question bank system, including a question bank system server host, a tablet computer, a WIFI router and a LORA wireless communicator. The question bank system server host communicates wirelessly through the WIFI router, and the question bank system server host and the tablet computer are both connected to the LORA wireless communicator. The question bank system server host and the tablet computer communicate wirelessly through the LORA wireless communicator.

[0013] Furthermore, the LORA wireless communicator includes an MCU single-chip microcomputer, a LORA chip and a lithium battery, the MCU single-chip microcomputer is connected to a computer USB interface and a tablet computer TYPE-C interface, the MCU single-chip microcomputer is connected to the LORA chip, the LORA chip is connected to a LORA antenna, the MCU single-chip microcomputer is connected to the lithium battery through a charging and discharging chip, and the charging and discharging chip is connected to the tablet computer TYPE-C interface.

[0014] The WIFI communication modules of the tablet computers in the utility model are standard configurations of the tablet computers. The system can directly adopt the specially designed LORA+power bank integrated receiver, which can be connected to the tablet computer through the TYPE-C interface to realize LORA communication and replenish power for the tablet computer.

[0015] WIFI signal has the advantages of high bandwidth and good versatility. It is a standard component of computers and tablet computers and does not require additional purchase. It is suitable for transmitting large-capacity file systems such as text, pictures, and videos. The utility model also uses WIFI signal as one of the transmission channels to transmit static large-capacity files such as question bank files, picture files, and video files.

[0016] The LORA transmission protocol is not a standard component in computers and tablets, so a customized LORA wireless communicator is required. The wireless communicator is completely driver-free and can be used directly in computer and tablet systems without any converter. It has low power consumption and is easy and quick to use. LORA wireless transmission does not rely on external base stations. The modules directly transmit data to each other through self-organizing networks, which has good real-time performance and high reliability.

[0017] The advantages of the utility model compared with the prior art are:

[0018] 1. The utility model adopts WIFI and LORA dual channels to transmit data in the competition, ensuring real-time and reliable data transmission in the competition, greatly improving the security of the entire competition interaction.

[0019] 2. The utility model combines WIFI broadband wireless transmission technology and LORA narrowband wireless transmission technology, takes advantage of each other, and applies them to interactive knowledge contests on tablet computers, achieving the design goal of long-distance, highly reliable interactive transmission of real-time data in the competition.

[0020] 3. The utility model has designed a 8000MAH lithium battery circuit, which is designed according to the charging current of 2A of most Android tablets on the market. The designed charging current is 2.1A and the discharge current is 2.4A, which fully meets the charging requirements of tablets. At the same time, it can also share the charger with the tablet to reduce user expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a principle block diagram of the LORA wireless communicator in the utility model.

[0023] Figure 3 It is a circuit diagram of the LORA wireless communicator in the utility model. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, a dual-channel high-reliability knowledge contest tablet question bank system includes a question bank system server host, a tablet computer, a WIFI router and a LORA wireless communicator. The question bank system server host communicates wirelessly via the WIFI router, and the question bank system server host and the tablet computer are both connected to the LORA wireless communicator. The question bank system server host and the tablet computer communicate wirelessly via the LORA wireless communicator. The LORA wireless communicator includes an MCU single-chip microcomputer, a LORA chip and a lithium battery. The MCU single-chip microcomputer is connected to a computer USB interface and a tablet computer TYPE-C interface. The MCU single-chip microcomputer is connected to the LORA chip, and the LORA chip is connected to a LORA antenna. The MCU single-chip microcomputer is connected to a lithium battery via a charge and discharge chip, and the charge and discharge chip is connected to the tablet computer TYPE-C interface. The WIFI communication module of the tablet computer in the utility model is a standard configuration of the tablet computer, and this system can be directly adopted. The LORA wireless communicator with a charge and discharge function can be connected to the tablet computer through the TYPE-C interface to realize LORA communication and replenish the tablet computer with electricity.

[0026] The utility model divides the file types of the tablet interactive quiz contest question bank system into two data transmission modes: "static question bank content transmission" and "dynamic real-time data transmission". Among them, the static question bank content data includes: the question bank files used in this competition (including text questions, picture questions, video questions and standard answers), the names of the representative teams and the initial scores of each team, the theme pictures of the competition, the background pictures of the tablet computer questions, the rules of each link and other files. These data contents can be transmitted and saved to each tablet computer in advance through WIFI wireless networking before the official event begins. Even if the static data transmission fails once, it can be ensured to be successful through secondary transmission and other methods.

[0027] In the official competition, the WIFI+LoRa dual-channel parallel communication solution is used to transmit the question number data of the current competition at the same time. The computer and tablet computer will display the question number on the big screen at the competition site and on the tablet computer screen of each player at the same time. After the player enters the answer, the player's answer information can be transmitted to the computer in real time; then the score of each team is transmitted according to the answer. Since the amount of data required to be transmitted in the official competition is very small, the LORA wireless communication method is fully capable of this task.

[0028] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dual-channel high-reliability knowledge contest tablet question bank system, characterized by: It includes a question bank system server host, a tablet computer, a WIFI router and a LORA wireless communicator. The question bank system server host communicates wirelessly through the WIFI router. The question bank system server host and the tablet computer are both connected to the LORA wireless communicator. The question bank system server host and the tablet computer communicate wirelessly through the LORA wireless communicator.

2. A dual-channel high-reliability knowledge contest tablet question bank system according to claim 1, characterized in that: The LORA wireless communicator includes an MCU single-chip microcomputer, a LORA chip and a lithium battery. The MCU single-chip microcomputer is connected to a computer USB interface and a tablet computer TYPE-C interface. The MCU single-chip microcomputer is connected to the LORA chip. The LORA chip is connected to a LORA antenna. The MCU single-chip microcomputer is connected to the lithium battery through a charge and discharge chip, and the charge and discharge chip is connected to the tablet computer TYPE-C interface.

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