Infrared light automatic focusing microscope based on sine wave inversion power supply

Abstract

The invention discloses an infrared light automatic focusing microscope based on sine wave inversion power supply, comprising a microcontroller module, an infrared emission module, an infrared light reception module, a temperature detection module, a display module, a CPLD module, a stepping motor and a timing module. The infrared emission module, the infrared light reception module, the temperature detection module, the display module and the timing module are connected to the corresponding ports of the microcontroller module; the microcontroller module is connected to the stepping motor through the CPLD module and is provided with a temperature sensor temperature measurement circuit on the hardware, which effectively reduces the affect on the precision of the distance measurement by the temperature changing, and improves the measurement precision of the infrared light distance measurement system.

Description

technical field [0001] The invention relates to an infrared light distance measuring system, in particular to an infrared light automatic focusing microscope based on a sine wave inverter power supply, which belongs to the field of distance measurement control. Background technique [0002] Infrared light is a kind of mechanical oscillation in elastic medium, which is caused by the oscillation source in contact with the medium, and its frequency is above 20kHz. Since the speed of infrared light is much smaller than the speed of light, its propagation time is easier to detect, and it is easy to directional emission, with good directionality and easy control of intensity, so the use of infrared light for ranging is very important in many distance detection applications. Applications, including non-destructive testing, process measurement, robot measurement and positioning, and fluid level measurement. [0003] In the air, the propagation speed of infrared light at normal temp...

AI Technical Summary

Problems solved by technology

[0005] For example, an infrared light distance measuring method with the application number "201210126584.8" belongs to the field of electronic measurement technology. The infrared light transmitter and the pulse laser are at the transmitting end. The infrared light transmitter triggers the infrared light, and phase-locks the triggered infrared light with the external clock source; the infrared light receiver and the photodiode are at the receiving end, and after the photodiode receives the pulsed laser, the timer is started, and the infrared light receiver acquires After receiving the infrared light, the timer stops to obtain the transit time; the transit time is multiplied by the corrected sound velocity to obtain the rough measurement value of the measured distance; the phase difference is obtained, and the fine measurement part is to obtain the measured distance. The present invention makes the receiver less vulnerable Transmitter interference greatly reduces the measurement blind area, improves the directivity of infrared distance measurement, and improves the distance measurement accuracy to within one infrared light length. Although this invention can measure distance through infrared light, it has not considered the influence of temperature and the measurement Accuracy needs to be further improved

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