Digital Input and Output

2021 ◽  
pp. 53-80
Author(s):  
Cem Ünsalan ◽  
Hüseyin Deniz Gürhan ◽  
Mehmet Erkin Yücel
Keyword(s):  
Digital Input ◽  
Input And Output

Research on Key Technology for General-Purpose Electromechanical Controller

2014 ◽  
Vol 926-930 ◽  
pp. 1392-1395
Author(s):  
Qiu Fang Ma
Keyword(s):  
Current Source ◽  
General Purpose ◽  
Drive Power ◽  
Key Technology ◽  
Digital Input ◽  
Input And Output ◽  
Key Technologies

In order to improve developing efficiency, a general-purpose electromechanical controller is designed based on MSP430F5438A.The paper analyzes the key technologies applied to improve the versatility and reliability. Before entering MCU’s A/D and counter module, external analog inputs of resistance, voltage, current and pulse from different sensors are processed by corresponding circuits. And digital input and output is isolated from the microcontroller by the photoelectric coupler. After appropriate operations, the controller can drive power equipments through the multi-channel precision current source composed of 12-bit D/A converter DAC7578 and V/I converter XTR115, and communicate with other equipments via RS485 bus. Furthermore, anti-interference methods by using watchdog, soft trap and reasonable wiring are studied in the paper. Tests show that the system is characterized with strong practicality and generality.

Digital Input and Output

2016 ◽  
pp. 115-121
Author(s):  
Kevin M. Lynch ◽  
Nicholas Marchuk ◽  
Matthew L. Elwin
Keyword(s):  
Digital Input ◽  
Input And Output

scholarly journals Design of Automatic Door Lock Control System Library Nurul Jadid University Based On Arduino Uno R3 and QR-Code

2020 ◽  
Vol 2 (2) ◽  
pp. 91
Author(s):  
Moch Badrus Sholeh ◽  
Amalia Herlina ◽  
Fuad Hasan
Keyword(s):  
Control System ◽  
Success Rate ◽  
Qr Code ◽  
Database Application ◽  
Digital Input ◽  
University Library ◽  
Testing Tools ◽  
Input And Output ◽  
Door Lock ◽  
Arduino Uno

The Nurul Jadid University Library (UNUJA) currently requires valid visitor data, because the number of visitors is an indicator of library performance in terms of disciplining staff / employees. For this reason, the UNUJA library requires an automatic library door lock control system using Arduino Uno and QR-Code. In designing tools, Arduino Uno and QR-Code are integrated with the library database application. Based on testing and analysis, it can be obtained that the success rate of testing tools in reading QR-code is 100 percent. The conclusion is that the assembly of the library door lock control system based on Arduino Uno and integrated QR-Code with the database has been able to read digital input and output.

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