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Nowadays, parents are perturbed about school going children because of the increasing number of cases of missing students. On occasion, students need to wait a much longer time for arrival of their school bus. There exist some communication technologies that are used to ensure the safety of students. But these are incapable of providing efficient services to parents. This paper presents the development...
Duty cycling has been the main concept for saving energy in sensor networks for a long time. Yet, additional overhead for synchronization and the fact that overhearing and idle listening cannot completely be prevented, motivated further research. Wake-up receiver, i.e., additional ultra-low power radios that are not switched off and can receive a so called wake-up signal, aim to fill this gap. The...
When information exchange occurs between people via a network, then authentication and security of data have more priority. This paper introduces a low cost, handheld, wireless electronic notice board by using Atmel's ATmega32 microcontroller and different wireless technologies (Bluetooth and ZigBee) and their performance analysis based on the parameter such as range, BER (bit error rate), RSSI (Received...
A new automatic identification system, deployed for rubber tyred gantry (RTG) crane' applications, is designed based on a single and low-cost global positioning system (GPS) receiver. The new system is characterized by low cost, easy installation. However, the low-cost GPS receiver provides lower position accuracy, a new method that so-called “stack transition tracking” is present to improve the performances...
This paper proposes a design of a system, which would provide a solution to irregular waste bin disposal system. The designed system makes use of weight sensor, IR sensor and biosensor to detect the extent of filling of the bin and the extent of pollution caused by the waste. This information is fed to a controller which with the help of a GSM module notifies the respected authority of the condition...
In this work we describe our novel design of an embedded hardware communication device. The hardware is designed generically, by taking an example of a Zig Bee green radio. Our hardware completely eliminates the problem of idle listening encountered by most "mote" class hardware. Lower layers can assume node synchronization and thus transmit a minimum sized preamble. The circuit has three...
ABSTRACT The 89S52 microcontroller (MCU) is very popular among the students, teachers, engineers, scientists and amateurs to build small and cost effective projects for learning purposes and or to incorporate it in a bigger project. In these projects, the chip remains in the system and occasionally need arises to change the program bytes of the code memory (flash) without removing the MCU from the...
In space mission there are different scenarios where autonomous radio systems are very useful. In this paper we consider one of such scenarios, related to the communication infrastructure for the planet exploration. The basic idea is to obtain significant advantages in autonomous radio receiver implementation by using FPGA dynamic partial reconfiguration. Implementing the most significant part of...
A high-precision ultrasonic ranging system platform is presented and evaluated in this work. By queuing peaks of the self-destructive interference, the proposed hardware platform can enhance the accuracy without complex algorithms. At the emitter, the developed technique generates two amplitude-modulated pulses with 180 phase shift. At the receiver, on the other hand, the two pulses create...
Terrestrial locomotion can be broadly classified into three categories based on their mechanism e.g. wheeled, legged and limbless locomotion. Most fascinating of these are the limbless locomotion of a serpent. Wheeled locomotion and legged locomotion have already been studied by many researchers in detail. On the contrary the limbless locomotion has drawn very limited degree of interest. In limbless...
TWI (Two-wire Serial Interface) bus is simple but powerful and flexible. It supports master and slave operation. The system is based on TWI, with a couple of ATmega32 as masters and a LPC2478 chip as a slave to achieve communication among nine different MCU, which greatly increase the efficiency of LPC2478 and the whole system. The communication nodes in the system can be dynamically added or removed...
Mobile communication services and Location based services are challenging application areas of wireless communications. Many applications were developed which require mobile navigation. The most known navigation systems are car navigation systems. Fewer advances have been made in pedestrian navigation systems (PNSs). There are some targeted achievements but the most challenging task is to develop...
This paper studied about micro controllers interaction using RS232 as a communication tool and C to programming the interaction. PIC18F4520 will be used in this prototype and MPLAB as a software tool. Before run it into the real hardware, some simulation must be done to make sure all the hardware connection and software writing is correct. Proteus 7.1 has been used for the simulation purpose. The...
The universal controller of serial interfaces with separate processing of data link and physical layer functions is proposed. The data link layer functions are implemented in software using a microcontroller, and physical level functions -in hardware using programmable logical device (FPGA or CPLD). It provides minimal utilization of hardware during interface controller design, high device flexibility...
A development of distributed area traffic signal lights control based on single-chip microcontroller through CAN BUS is described. With the core of AT89C51, infrared receiver receives the infrared signal coming from launcher. The demodulation signal is treated by single-chip microcontroller. The single-chip microcontroller controls the CAN BUS controller to structure CAN BUS communication system to...
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