Load identification interactive whiteboard and method for implementing same

Abstract

The invention discloses a method for implementing a load identification interactive whiteboard, and belongs to the field of electronic information. A load identification interactive whiteboard system comprises a whiteboard (1), a mechanical sensor (2), a transmitter (3), an amplifier (4), a multi-way switch (5), an A / D sampling module (6), a data processing module (7), a communication module (8), a PC machine (9) and a projector (10). In the method, the mechanical sensor is used as a sensing element of the interactive whiteboard, and after sensor data is normalized by testing the multipoint deformation of the whiteboard, the positioning of contacts and the expression of stroke thickness are realized by using the technology of pattern recognition. The interactive whiteboard manufactured by the method has the advantages of simple structure, high reliability, low installation and maintenance requirements, low cost, high adaptability, easy implementation of large-layout manufacturing, no need of special pens and the like, and the method also can be used for manufacturing touch screens.

Description

1. Technical field [0001] The interactive electronic whiteboard based on load recognition technology of the present invention belongs to the field of electronic information, and relates to the application of mechanics, sensor technology and pattern recognition technology on the electronic whiteboard and touch screen. 2. Background technology [0002] The interactive electronic whiteboard can communicate with the computer, connect the electronic whiteboard to the PC, and use the projector to project the content on the PC to the electronic whiteboard screen. With the support of special applications, a large screen, Interactive collaborative meeting or teaching environment. Use a specific positioning pen instead of the mouse to operate on the whiteboard, run any application, edit, annotate, save files, and any operations that can be achieved with the keyboard and mouse on the computer. [0003] Interactive electronic whiteboards mainly include the following types according to ...

AI Technical Summary

Problems solved by technology

[0007] Disadvantages: poor durability, fear of scratches, slow response speed, unable to make a large area, whiteboard pen does not support functions such as the right mouse button, and it is difficult to operate the computer

[0011] Disadvantages: high cost, special pen must be used, no pressure response

[0015] Disadvantages: You must use a special pen and cannot do touch operations

[0019] Cons: No pressure response, affected by strong light and dust

Ultrasonic positioning technology has no special requirements for whiteboards, and it is easy to realize large-format production, but it has high requirements for components. The performance requirements of components of a pair of ultrasonic detectors must be consistent, which is difficult to achieve in practical applications; components are easily affected by temperature changes. , the positioning stability is poor; a special pen is required, and a laser is usually required on the pen to indicate the target. At the same time, the diffuse reflection light on the whiteboard is also used to notify the ultrasonic receiver to start timing. The technology is complex and difficult to debug and maintain.

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