Dtmf Decoder

Abstrak. Need of electricity energy on the building, industries and firms mount increase, if we can not solve this increasing, it can influence needs of national electricity energy. While the establishing of new electricity generator about 1,2 % in a year. This condition has to be perceived seriously by building constructor to convince the using of electricity energy by doing energy economical program. The purpose of this research is making a lamp control system on the building which can "on" or "of" the lamp by the electric swi tch in each of room and by program on PC. By doing this system, the lamp lamp controlling can be done easily, effective and efficient so that, it can economic electricity energy. This tool consists of two designs; they are mechanic design and electronic design. Mechanic design consists of room miniature, lamp which is connected with relay and Photodiode sensor. While electronic design consists of LM311, shift Register input, shift register output, ULN 2003 and DB 25. Then the tool is connected with PC through parallel port communication. This system is controlled by the main program on PC wich uses Delphi 7.0. Testing of sensor is done by looking for the tense is out from sensor when there is light and no light. While test of the whole tools by giving income (push) on the button/ the button on the program then look at the lamp output, whether it is match with incaome or not. From the testing result of the whole systems can be concluded that lamp control by using Delphi 7.0 can do wll. It shows same output to input given. If lamp is on, push the button on the program appearance. It will be yellow color and if lamp is broken or did not paired on the program button, it will be red color.

At the time of the author undergoing field practice at the hospital, there is a plane theraphy. Aircraft teraphy ersebut using infrared light using an analog timer settings. Conditions teraphy infrared aircraft is still in good condition. But teraphy operator told me about the plane, the plane analogue timers often do not work properly, so it is often improved. Operators also complained about the lack of display timer, it makes the service a bit of confusion. Teraphy plane is also no infrared light intensity settings. By looking at the problem the writer trying to do some form of effort to design a device with the title "Prototype Infrared teraphy In Timer Complete With Seven Segment Display and Digital-Based Light Intensity Settings". This tool comes with a choice of teraphy 10, 20, and 30 minutes were enabled to choose the length of the therapy process. There are also settings in the settings low medium high light intensity which functioned to regulate the light intensity. By using the computation time in the selection of a 30-minute known standard deviation of 1.61, error of 0.48%. The timing of 20 minutes unknown standard deviation of 1.11, the error of 0.5%. The timing of 10 minutes unknown standard deviation of 0.6, error of 0.51%. And by using the calculations in the selection of low intensity can be known standard deviation of 0.5, error of 0.06%. Selection of medium intensity can be known standard deviation of 1.4, the error or errors by 0.1%. Selection of high intensity can be known standard deviation of 0:23, error of 0.02%.

This article summarizes the use of DTMF signalling technology to send and receive the control commands from user in order to open or close the door. Password protection is given to the system with help of microcontroller and corresponding algorithm that authenticate the user by checking the password provided by the user. So, if and only if the user press correct password then only user get authenticate and gets the access to open or close the door. Above said work has been examined theoretically as well as practically in this article. The feasibility of implementation is examined with the help of simulator which would indicate the real time results of system mentioned here.

Bedrest is a medical procedure that is done by making sure the patient lie down and rest on the bed in a certain period of time. Bedrest is an attempt decrease the activity of the patient. Patients with mobility limitations of bedrest desperately need tools to perform day-today activities. The study design and make tool of activity patients bedrest for controlling light, curtain lights, bell and light call for help. The tool can work in two modes. The switch mode on, the tools work on Auto mode. The blinds will automatically open in the morning and closed in the afternoon. When the curtain opens, light spaces automatically turns off and when the curtains are closed automatically space lights will live. Users can also control curtains and light spaces as desired, by means of manual mode, turn off the switch mode. On manual mode, curtains and lamps controlled spaces using the button remote RF. Another feature is, when the user (patient bedrest) need help can enable buzzer and light using remote RF, or use buttons mounted on the patient table. Prototype tools can reduce the bedrest patient activity dependence patients on others in doing our daily activities.

Controlling a robot wirelessly for surveillance application is possible with several methods such as Infrared remote control Radio frequency (RF) remote control, Bluetooth, Wi-Fi, etc. But the controls of these communication methods are limited to certain areas, and also the compatibility of these wireless modules with popular microcontrollers leads to complicated to design of the system. To overcome these difficulties, a Dual Tone Multi-Frequency (DTMF) based surveillance control robot is presented here. Using a mobile phone, it generates a tone combination of a high and low frequencies, from keypad. These frequencies can be decoded into binary sequence. Tone from DTMF encoder is given to the DTMF decoder. The decoder s decodes the incoming tone to binary data. The motors will rotate as per the binary codes. The design of an unmanned vehicle proposed here does not make use of any microcontroller. The transmitter used, is a handheld mobile phone. For transmitting live video, droid camera application is used. Applications of this system includes surveillance of hazardous environments, military, rescue operation, recreation and hobby purpose

Elektronika adalah ilmu yang mempelajari alat listrik arus lemah yang dioperasikan dengan cara mengontrol aliran elektron atau partikel bermuatan listrik dalam suatu alat seperti komputer, peralatan elektronik, termokopel, semikonduktor, dan lain sebagainya.

The telephone is a communication tool that can connect someone with others quickly. Communication using the phone has become a primary need for the community, especially in large cities, agencies, to large enterprises. The phone service users in bulk urgently need a alatyang is the development of telephone communication tool known as the PABX (Private Automatic Branch Exchange). In this study the author uses the theory of the resistors, capacitors, diodes LED, optocoupler, Pro wireless XBee, XBee Pro adapter, PABX theory, the theory of the phone, Atmega 16 microcontroller and programming languages. The method used in this research is to study literature, comparative studies of the lecturers, field studies and through experiments in the laboratory. The conclusion of this design are the technicians who worked on the PABX unit can determine the condition of the telephone line clearly and be more efficient in monitoring the telephone line with a distance of affordable, especially if there is damage to phone lines can directly send on display Personal Computer.

Robotics is an interesting field where every engineer can showcase his creative and technical skills. As the development of individual and cooperating autonomous robots advances, the need for a robust and reliable communication method becomes apparent. This paper summarizes a the feasibility of implementing Dual-Tone, Multi-Frequency (DTMF) as an alternative mean of robotic communication to Radio Frequency (RF). The user in order to control the robot should make a video call to the 3G enabled phone attached in the Vehicle, from any another 3G enabled phone, which can send DTMF tones by pressing the numeric buttons and can view the video output. The cell phone in the Vehicle will be kept in auto answer mode. So, after a ring the cell phone accepts the call and starts video transmission. Now for the DTMF tones pressed, the tones are fed to the circuit and the corresponding actions such as move forward or backward, turn left or right, target identification and locking, missile launching and parameter monitoring using black box are performed. Index Terms-DTMF technology, 3G wireless communication, black box.

Tulisan ini membahas perancangan remote control (inframerah) terpadu untuk mengendalikan berbagai fasilitas suatu kamar hotel (lampu, AC, TV, DVD, dan pemanggilan layanan kamar). Data dari remote control inframerah dengan standar protokol NEC akan dibaca oleh mikrokontroler melalui receiver inframerah, selanjutnya data tersebut diolah melalui mikrokontroler ATMega16 menjadi sinyal instruksi pengendalian. Pada pengendalian menyalakan/memadamkan lampu, mikrokontroler akan mengaktifkan rele melalui driver transistor dengan sistem kendali ON/OFF; pada pengendalian pemanggilan layanan kamar, mikrokontroler akan mengirimkan kode data layanan melalui pemancar RF ke ruang kontrol, sedangkan untuk mengendalikan AC, TV, dan DVD Player, mikrokontroler akan membangkitkan sinyal kendali melalui pemancar inframerah dengan protokol tertentu (protokol Panasonic, protokol NEC, dan protokol Pioneer) sesuai dengan peralatan yang dikendalikan. Dari hasil pengujian, sistem untuk mengatur fasilitas dalam kamar hotel dapat berfungsi baik dengan jarak pengendalian kurang dari 9 meter.

A system of attendance card identification has been realized. The system can read identification that has characterized by eight holes suitable as much as number of used sensory. System of attendance card identification is arranged by using sensory connection that connected with PPI 8255 and computer slot. This system is conducted by software which was done by Delphy program. This system has been realized and can be used for detecting attendance card. The output of this system is the form of attendance sheet that can be printed each month.

Frekuensi merupakan jumlah gelombang dalam satu detik. Frekuensi listrik adalah banyaknya gelombang listrik yang terdapat dalam satu detik. Frekuensi listrik merupakan salah satu parameter gelombang listrik yang dapat mempengaruhi kinerja dari sistem tenaga listrik. Perubahan nilai frekuensi listrik bagi sebagian perangkat dapat berpengaruh besar. Salah satu akibat dari frekuensi listrik yang tidak stabil adalah mengakibatkan perputaran motor listrik sebagai penggerak mesin-mesin produksi pada industri manufaktur menjadi tidak stabil, dimana hal ini akan mengganggu proses produksi. Frekuensi listrik di Indonesia berada pada kisaran 50Hz, perubahan pada besar nilai frekuensi masih dapat ditolerir apabila masih berada dalam batas. Karena itu penting untuk mengembangkan suatu alat untuk memantau besar nilai frekuensi listrik secara real-time. Frekuensi meter listrik yang dibuat untuk mengukur dan memantau besar frekuensi listrik. Alat yang dibuat untuk penelitian kali ini merupakan sua...

In present time almost everything used basically is operated by remotes. The biggest limitation of remote controlling is its limited frequency level. This paper suggests a method for robotic control using the DTMF tone generated when the user gives commands using mobile phone keypad buttons connected with a remote mobile robot. This spy robot holds four technologies together, they are-Ultrasonic Sensor, Metal Detection, Night Vision Wireless Camera and DTMF. Robot motion is done by DTMF Technology. The system uses two mobile phones, one to control the robot that sends DTMF commands via call to another mobile phone mounted on the robot vehicle.

Robotics is an interesting field where every engineer can showcase his creative and technical skills. As the development of individual and cooperating autonomous robots advances, the need for a robust and reliable communication method becomes apparent. This paper summarizes a the feasibility of implementing Dual-Tone, Multi-Frequency (DTMF) as an alternative mean of robotic communication to Radio Frequency (RF). The user in order to control the robot should make a video call to the 3G enabled phone attached in the Vehicle, from any another 3G enabled phone, which can send DTMF tones by pressing the numeric buttons and can view the video output. The cell phone in the Vehicle will be kept in auto answer mode. So, after a ring the cell phone accepts the call and starts video transmission. Now for the DTMF tones pressed, the tones are fed to the circuit and the corresponding actions such as move forward or backward, turn left or right, target identification and locking, missile launching and parameter monitoring using black box are performed. Index Terms-DTMF technology, 3G wireless communication, black box.

Frekuensi merupakan jumlah gelombang dalam satu detik. Frekuensi listrik adalah banyaknya gelombang listrik yang terdapat dalam satu detik. Frekuensi listrik merupakan salah satu parameter gelombang listrik yang dapat mempengaruhi kinerja dari sistem tenaga listrik. Perubahan nilai frekuensi listrik bagi sebagian perangkat dapat berpengaruh besar. Salah satu akibat dari frekuensi listrik yang tidak stabil adalah mengakibatkan perputaran motor listrik sebagai penggerak mesin-mesin produksi pada industri manufaktur menjadi tidak stabil, dimana hal ini akan mengganggu proses produksi. Frekuensi listrik di Indonesia berada pada kisaran 50Hz, perubahan pada besar nilai frekuensi masih dapat ditolerir apabila masih berada dalam batas. Karena itu penting untuk mengembangkan suatu alat untuk memantau besar nilai frekuensi listrik secara real-time. Frekuensi meter listrik yang dibuat untuk mengukur dan memantau besar frekuensi listrik. Alat yang dibuat untuk penelitian kali ini merupakan sua...

Frekuensi merupakan jumlah gelombang dalam satu detik. Frekuensi listrik adalah banyaknya gelombang listrik yang terdapat dalam satu detik. Frekuensi listrik merupakan salah satu parameter gelombang listrik yang dapat mempengaruhi kinerja dari sistem tenaga listrik. Perubahan nilai frekuensi listrik bagi sebagian perangkat dapat berpengaruh besar. Salah satu akibat dari frekuensi listrik yang tidak stabil adalah mengakibatkan perputaran motor listrik sebagai penggerak mesin-mesin produksi pada industri manufaktur menjadi tidak stabil, dimana hal ini akan mengganggu proses produksi. Frekuensi listrik di Indonesia berada pada kisaran 50Hz, perubahan pada besar nilai frekuensi masih dapat ditolerir apabila masih berada dalam batas. Karena itu penting untuk mengembangkan suatu alat untuk memantau besar nilai frekuensi listrik secara real-time. Frekuensi meter listrik yang dibuat untuk mengukur dan memantau besar frekuensi listrik. Alat yang dibuat untuk penelitian kali ini merupakan sua...

Penggunaan beban – beban non linier seperti mesin-mesin sinkron, lampu hemat energi, las dan lain-lain dapat menyebabkan gelombang arus dan tegangan pada sistem tenaga listrik terdistorsi atau yang sering disebut harmonisa yang mengakibatkan keamanan dan kualitas dari sistem tenaga listrik terganggu. Harmonisa merupakan distorsi periodik dari gelombang sinus tegangan, arus, atau daya dengan bentuk gelombang yang frekuensinya merupakan kelipatan diluar bilangan satu terhadap frekuensi fundamental (frekuensi 50 Hz/60 Hz). Akibat lain yang ditimbulkan harmonisa adalah rusaknya peralatan listrik, penurunan daya trafo & bertambahnya losses, dan terjadinya kesalahan ukur pada KwH meter. Oleh karena itu, perlu dibuat alat untuk memonitoring harmonisa dan kemudian diidentifikasi peralatan elektronik yang menimbulkan harmonisa. Pada tugas akhir ini dibuat alat pendeteksi harmonisa arus menggunakan metode Discrete Fourier Transform (DFT) berbasis mikrokontroler. Mikro akan mengirimkan data se...

DTMF (Dual Tone Multi Frequency) merupakan sistem pensinyalan pesawat telepon ke sentral telepon dengan waktu yang lebih cepat dibanding sistem sebelumnya (saklar dan dialing pulsa). Guna memahami nada yang dihasilkan sistem DTMF pada pesawat telepon, maka melalui pemanfaatan fasilitas MATLAB versi 6.0  dibuat  simulasi pembangkit nada DTMF tersebut.  Untuk menguji keabsahan nada yang dihasilkan DTMF melalui simulasi, maka akan dibandingkan nada DTMF hasil simulasi dengan nada DTMF hasil pengujian langsung pesawat telepon Samsung Model SSP-2301 melalui osiloskop. Dengan memasukkan frekuensi DTMF kedalam parameter simulasi, maka akan terlihat kesamaan bentuk nada DTMF yang diperoleh melalui simulasi  dibandingkan dengan nada yang dihasilkan oleh pesawat telepon itu sendiri.