Infrared sensing electronic whiteboard

Abstract

The invention discloses an infrared sensing electronic whiteboard. An RS232 interface is connected with an MAX232 chip, wherein the MAX232 chip is further connected with a processor part; the processor part is further connected with an infrared emitting part, an infrared receiving part and a signal processing part; the infrared emitting part, the infrared receiving part and the signal processing part are connected in sequence; the infrared receiving part comprises a plurality of infrared receiving tubes; the processor part, the infrared emitting part, the infrared receiving part and the signal processing part are arranged in a control cabinet; in addition, the infrared sensing electronic whiteboard further comprises a cavity passage I for feeding a gas, a cavity passage II for discharging the gas, as well as a first supporting base and a second supporting base for positioning the processor part, the infrared emitting part, the infrared receiving part and the signal processing part; the infrared sensing electronic whiteboard overcomes the defects in the prior art that the refrigerating efficiency is not ideal, the gas distribution is not uniform, the structure is complex, and an anti-leakage structure has components falling off.

Description

technical field [0001] The invention belongs to the technical field of electronic whiteboards, and in particular relates to an infrared induction electronic whiteboard. Background technique [0002] Infrared induction electronic whiteboard, that is, infrared positioning electronic whiteboard system, its hardware circuit is composed of controller, infrared transmitting circuit, infrared receiving circuit, infrared signal processing circuit and communication circuit with host computer. [0003] 1. Controller part: including the peripheral circuit and interface of the single-chip microcomputer. [0004] 2. Infrared signal transmitting and receiving part: The controller drives the infrared emitting strobe circuit and the infrared receiving strobe circuit according to the scanning method adopted, and selects each infrared emitting tube and infrared receiving tube in turn. [0005] 3. Signal processing part: several processes of filtering, amplification, detection, integration an...

AI Technical Summary

Problems solved by technology

[0007] In addition, the controller part, infrared signal transmitting and receiving part, and signal processing part are often placed in the control cabinet, so that the controller part, infrared signal transmitting and receiving part, and signal processing part tend to heat up in such a relatively closed environment. However, the method of air supply from the upper end and air discharge from the bottom is generally used to cool the controller part, infrared signal transmitting and receiving part, and signal processing part, which will make the high-temperature gas flow toward the high place, thus making the ultra-high The high-temperature gas flowing at the bottom is drawn into the bottom again, which makes the cooling efficiency unsatisfactory; combined with the structure of the intake fan intake, the low-temperature gas in the environment where the control cabinet is located is sent into the various components of the control cabinet, so that the gas The distribution is uneven, but setting a stopper in the gas passage will make the structure complicated. In addition, it can only make the gas around the stopper evenly distributed. The current anti-leakage structure uses rubber bonded gaskets, which often makes parts of the anti-leakage structure fall off. from the problem

Images