| 摘要 |
<p>Disclosed is a method for implementing an infrared touch screen based on an infrared optical sensor. The infrared touch screen based on the infrared optical sensor comprises: an infrared transmitting unit, an infrared receiving unit, an amplifier unit, a power source, and an MCU processor. The power source supplies electric power to the infrared transmitting unit and the infrared receiving unit. The infrared receiving unit comprises a receiving address selecting unit and a receiving tube array unit, and an infrared optical sensor triode is provided on the receiving tube array unit. The method comprises the following steps: the infrared transmitting unit transmitting an infrared ray; the infrared optical sensor triode of the infrared receiving unit receiving the infrared ray, the amplifier unit amplifying a signal and sending the signal to the MCU processor for sampling processing, and the MCU processor performing sampling processing in a single pulse sampling manner; and the MCU processor controlling a time sequence of the infrared transmitting unit and the infrared receiving unit. The present invention does not need a demodulating circuit, and thereby has the advantages of a simple circuit and short response time.</p> |
