English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The automatic opening and closing light-operated curtain device designed in this paper applies the photosensitive resistance to collect current light intensity, then transforms the collected analog signal to digital signal by a serial A/D chip TLC549, and finally the converted data is transmitted to main control chip STC89C54RD+ SCM to be analyzed and handled. After the data processing, the main control chip displays the processing results by OLED liquid crystal display. At the same time, it compares the data with set light intensity, thereby controlling corresponding actions of stepper motor , and further controlling the opening and closing of curtain. The device can control the opening and closing of curtain by the infrared remote control, button and time clock. 1. Overall design With the continuous improvement of electronic control technology and continuous decline of cost, a variety of intelligent curtain control systems with household appliances as an example emerges as the times require and has achieved a broad market, such as the light-operated, acoustic control, remote control and temperature control. Compared with the traditional hand drawn curtain, this design increases functions of timing and remote control opening and closing, such as office buildings, conference rooms, exhibition halls and other places. Main control circuit A/D converter

A New Type of Automatic Opening and Closing Light-Operated Curtain