scholarly journals Rancang Bangun Tempat Tidur Pasien Otomatis Dengan Sensor Accelerometer Gyroscope Untuk Mengatur Keseimbangan Berbasis Mikrokontroler Arduino

CYCLOTRON ◽  
2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Ogis Ockikiriyanto
Keyword(s):  
Liquid Crystal ◽  
Reference Point ◽  
Liquid Crystal Display ◽  
Dc Motor ◽  
Patient Comfort ◽  
Accelerometer Sensor ◽  
Sensor Reading ◽  
Arduino Microcontroller

Abstrak— Tempat Tidur pasien Accelero Bed Control(ABC) adalah tempat tidur pasien yang memudahkan intansi rumah sakit agar menjaga kenyamanan pasien daan meningkatkan kualitas mutu rumah sakit. Tempat tidur ini bekerja pada jalur kemiringan rumah sakit. Tempat tidur pasien ini bekerja dengan menggunakan prinsip-prinsip motor DC untuk menaikan dan menurunkan tempat tidur,sensor accelerometer gyroscope untuk mendeteksi jalur kemiringan rumah sakit,relay,dan mikrokontroler arduino sebagai controler-nya. Metode yang digunakan untuk membuat alat ini adalah rancang bangun.Alat ini bekerja dengan pembacaan sensor accelerometer gyroscope untuk mendekteksi jalur kemiringan pada rumah sakit dan relay sebagai driver untuk menggerakaan motor DC naik dan turun  tempat tidur. Semua hasil pembacaan dari sensor akan ditampilkan melalui LCD(Liquid Crystal Display). Pembacaan sensor pada alat ini mengacu pada titik acuan ±3º sebagai titik acuan 0º. Tempat tidur ini telah bekerja dengan baik sesuai dengan perancangan dengan bergerak naik turun berdasarkan nilai sudut untuk mencapai kondisi datar.Kata kunci: Motor DC, Relay, Sensor Accelerometer Gyroscope, LCDAbstract— The bed of Accelero Bed Control (ABC) patient is a patient bed that facilitates hospital to keep patient comfort and improve the quality of the hospital. This bed works on the slope of the hospital. This patient bed works by using the principles of a DC motor to raise and lower the bed, the gyroscope accelerometer sensor to detect the slope of the hospital, relay, and arduino microcontroller as its controller. The method used to make this tool was design. It works by reading accelerometer gyroscope sensors to detect slope lines at hospitals and relays as drivers to drive DC motor up and down the bed. All reading result from the sensor will be displayed via LCD (Liquid Crystal Display). The sensor reading in this tool refers to the reference point ± 3º as a reference point of 0º. This bed has worked well appropriate with the design by moving up and down based on the angle value to achieve flat conditions.Keywords: Motor DC, Relay, Sensor Accelerometer Gyroscope, LCD

Image Quality of Two-Primary Color Active-Matrix Liquid-Crystal Displays

1997 ◽  
Vol 39 (4) ◽  
pp. 618-641 ◽  
Author(s):  
David L. Post ◽  
William F. Reinhart
Keyword(s):  
Liquid Crystal ◽  
Image Quality ◽  
Liquid Crystal Display ◽  
Active Matrix ◽  
Primary Color ◽  
Aperture Ratio ◽  
Full Color ◽  
Series Of Experiments ◽  
Matrix Liquid

The demand for color head- and helmet-mounted displays (HMDs) is growing. Interest focuses on full-color systems, but a limited color repertoire is sufficient for some applications and can reduce cost and complexity significantly, especially when subtractive-color active-matrix liquid-crystal display (AMLCD) technology is used. We report a series of experiments that investigated important questions about the design and merits of two-primary color AMLCDs for HMD applications. Our main conclusion is that the image quality of a subtractive-color AMLCD with high (≥70%) aperture ratio is superior to a comparable, conventional color AMLCD. Evidence regarding requirements for resolution, aperture ratio, and gray scale is also provided.

scholarly journals Analisis Permasalahan Guru dan Siswa Menggunakan Pembelajaran Berbasis Masalah dengan Media LCD (Liquid Crystal Display) Terhadap Hasil Belajar IPA Biologi

2019 ◽  
Vol 1 (2) ◽  
pp. 90
Author(s):  
Faridah Faridah ◽  
Elsje Theodora Maasawet ◽  
Didimus Tanah Boleng
Keyword(s):  
Liquid Crystal ◽  
Science Teachers ◽  
Liquid Crystal Display ◽  
Real Life ◽  
Cognitive Learning ◽  
Education Management ◽  
National Education ◽  
Teachers And Students ◽  
Quasi Experimental

<em>The function of education is to prepare students through a process that takes place before students are ready to work in real life. The strategy for implementing education is carried out in the form of guidance, teaching and training activities. In line with that  national education must be able to guarantee equal opportunities for education, improvement in quality, and efficiency of education management. Improving the quality of education is directed at improving the quality of Indonesian people as a whole through cognitive, affective aspects, and psychomotor aspects. The purpose of the study was to determine the problems of teachers and students in the problem-based learning model with the use of Liquid Crystal Display Media on the results of Biology Science. The design of this study uses quasi experimental. Based on observations and interviews with Biology Science teachers that students tend to remain silent in class, pay less attention to teachers, play with their peers so that the average cognitive learning value results are 63.50%. Based on the results of interviews with students, information was obtained that the teacher had been giving a woman a monotonous method, namely lecture and lack of interaction with students so that some students felt they did not understand the material.</em>

Moving image quality of liquid crystal display based on human factor

2020 ◽  
Vol 35 (10) ◽  
pp. 1051-1058
Author(s):  
Yu SONG ◽  
◽  
Zhen-ping XIA ◽  
Fu-yuan HU ◽  
Cheng CHENG ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Image Quality ◽  
Human Factor ◽  
Liquid Crystal Display ◽  
Moving Image

scholarly journals Enhancement of Image Quality in LCD by Doping γ-Fe2O3 Nanoparticles and Reducing Friction Torque Difference

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 911 ◽  
Author(s):  
Lin Gao ◽  
Yayu Dai ◽  
Tong Li ◽  
Zongyuan Tang ◽  
Xueqian Zhao ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Image Quality ◽  
Liquid Crystal Display ◽  
Friction Torque ◽  
Fe2o3 Nanoparticles ◽  
Dc Voltage ◽  
Absolute Value ◽  
Combined Action ◽  
Cell Capacitance

Improving image sticking in liquid crystal display (LCD) has attracted tremendous interest because of its potential to enhance the quality of the display image. Here, we proposed a method to evaluate the residual direct current (DC) voltage by varying liquid crystal (LC) cell capacitance under the combined action of alternating current (AC) and DC signals. This method was then used to study the improvement of image sticking by doping γ-Fe2O3 nanoparticles into LC materials and adjusting the friction torque difference of the upper and lower substrates. Detailed analysis and comparison of residual characteristics for LC materials with different doping concentrations revealed that the LC material, added with 0.02 wt% γ-Fe2O3 nanoparticles, can absorb the majority of free ions stably, thereby reducing the residual DC voltage and extending the time to reach the saturated state. The physical properties of the LC materials were enhanced by the addition of a small amount of nanoparticles and the response time of doping 0.02 wt% γ-Fe2O3 nanoparticles was about 10% faster than that of pure LC. Furthermore, the lower absolute value of the friction torque difference between the upper and lower substrates contributed to the reduction of the residual DC voltage induced by ion adsorption in the LC cell under the same conditions. To promote the image quality of different display frames in the switching process, we added small amounts of the nanoparticles to the LC materials and controlled friction technology accurately to ensure the same torque. Both approaches were proven to be highly feasible.

A Control Algorithm of LCD Dynamic Backlight Based on PSNR

2012 ◽  
Vol 241-244 ◽  
pp. 3014-3019 ◽  
Author(s):  
Xiao Bing Zhang ◽  
Xin Liu ◽  
Bo Liu ◽  
Jiang Hong Han ◽  
Hua Xia Wu
Keyword(s):  
Liquid Crystal ◽  
Image Quality ◽  
Power Consumption ◽  
Control Algorithm ◽  
Signal To Noise Ratio ◽  
Liquid Crystal Display ◽  
Gray Level ◽  
Quality Requirement ◽  
Signal To Noise

A new algorithm is proposed to adjust backlight luminance for local dimming of liquid crystal display (LCD) devices. PSNR (the peak signal-to-noise ratio) =30 is acted as the lowest standard to guarantee the quality of image in the algorithm. Based on the formula of PSNR=30, the square error value of the image distortion is gained. Then, luminance of backlight is gained dynamically by that the maximum gray level minus 1 into the formula proposed in the paper and decreases by one after each trial if the image quality requirement is not satisfied. In order to simplify the calculation, three important gray level values are selected to meet the requirements. The results show that the algorithm can greatly reduce the power consumption with guaranteeing the image quality and furthermore save much time in calculation and be better applied in hardware.

Sistem Kontrol Pengisian Air Otomatis Dengan Dua Sumber Suplai Berbasis Mikrokontroler (ATmega 8535)

2016 ◽  
Vol 1 (2) ◽  
pp. 84 ◽  
Author(s):  
Sumardi Sumardi ◽  
Muhammad Nur Anggoro
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Display

Sistem kontrol pengisian air otomatis dengan dua sumber suplai berbasis mikrokontroler merupakan sebuah sistem yang dapat digunakan untuk mengendalikan level air pada sebuah bak penampungan secara otomatis. Bahan dan alat yang digunakan dalam sistem kontrol berupa mikrokontroler ATmega 8535, sensor air, downloader DI-USB AVR ISP V2/DI-USB to Serial TTL, liquid crystal display, transisor, resistor, pompa air, adaptor 12 volt dc, saklar, dan program editor code vision avr. Metode yang digunakan dalam pembuatan sistem kontrol pengisian air otomatis ini adalah melakukan percobaan dan ujicoba peralatan secara langsung. Sistem kontrol ini bekerja dalam dua kondisi yaitu ketika air dalam bak penampungan melewati batas bawah maka bak penampungan akan terisi secara otomatis dan ketika telah mencapai batas atas yang ditentukan maka suplai air ke bak penampungan akan berhenti, selanjutnya ditambah pengaturan dari dua buah sumber air sebagai suplai yang akan bekerja sesuai dengan prioritasnya. Proses tersebut dilakukan oleh sensor bagian input yang berupa sensor air pada masukan sumber air yang kemudian diproses oleh mikrokontroler terprogram. Hasil percobaan menunjukkan sensor air berhasil memberikan logika Low atau High pada keluarannya sebagai fungsinya untuk memberikan sinyal masukan pada port mikrokontrol. Pada kondisi high, sensor air mampu memberikan nilai tegangan 4,89 Volt DC untuk digunakan sebagai masukan mikrokontroler. Dan pada kondisi low, sensor air mampu memberikan nilai tegangan 0,11 Volt dc sebagai masukan mikrokontroler ketika elektroda tehubung dengan common oleh media air. Driver Masukan terbukti dapat digunakan untuk menggendalikan kerja dari motor pompa 220 V AC dan lampu indikator 12 V DC. Hasil yang dari sistem kontrol pengisian air ini adalah terjadinya pengurangan kerugian yang ditimbulkan karena masalah ketersediaan air dan juga mempermudah kegiatan dalam pengendalian ketersediaan air. Kata kunci : Sistem kontrol, pengisan air otomatis, mikrokontroler, sensor air.

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