Nowadays heart attack patients are increasing day by day."Though it is tough to save the heart attack patients, we can increase the statistics of saving the life of patients & the life of others whom they are responsible for. The main design of this project is to track the heart attack of patients who are suffering from any attacks during driving and send them a medical need & thereby to stop the vehicle to ensure that the persons along them are safe from accident. Here, an eye blinking sensor is used to sense the blinking of the eye. spO 2 sensor checks the pulse rate of the patient. Both are connected to micro controller. If eye blinking gets stopped then the signal is sent to the controller to make an alarm through the buffer. If spO 2 sensor senses a variation in pulse or low oxygen content in blood, it may results in heart failure and therefore the controller stops the motor of the vehicle. Then Tarang F4 transmitter is used to send the vehicle number & the mobile number of the patient to a nearest medical station within 25 km for medical aid. The pulse rate monitored via LCD .The Tarang F4 receiver receives the signal and passes through controller and the number gets displayed in the LCD screen and an alarm is produced through a buzzer as soon the signal is received.
In this paper, a low profile 4 × 4 multiple input and multiple output (MIMO) antenna is proposed and designed for wireless local area network (WLAN) application using a square split-ring resonator. Initially, a single square-patch antenna is designed with square-shaped split-ring slot. Subsequently, the two-element MIMO antenna is designed and it is extended to four-element MIMO antenna. Finally, the defected ground structure (DGS) is implemented in order to enhance antenna performance. The antenna elements are placed opposite to each other. The mutual coupling between the antennas elements is reduced by DGS. The proposed single, two and four-element antennas operate at 5.8 GHz for WLAN. The overall performance is measured in terms of S parameter, radiation pattern, and envelope correlation coefficient. The simulated results are verified through measurements. The simulated and measured results demonstrate that the proposed 4 × 4 MIMO antenna is the most suitable for WLAN applications.
This paper illustrates the design and development of the Series-fed Two Dipole Array antenna (STDA) for Wi-Fi applications. The proposed antenna consists of two dipole elements of different lengths, which are serially joined by the Coplanar Strip Line (CPS). The design incorporates an alternative feeding mechanism of coaxial/probe feeding technique with balun. The primary objective of this paper is to develop the high gain antenna with array configuration for Wi-Fi applications. The performance parameters of an antenna such as return loss, radiation pattern, gain and directivity are investigated for STDA array configurations. It operates at 2.4 GHz and produces a high gain of 21.6 dBi with reflector. The STDA antenna has been analyzed for different array configurations in the formation of 1×4, 1×8, 2×8 STDA array formation in order to improve the overall gain. The proposed antenna is fabricated an FR4 substrate with a dielectric constant of 4.4 and Loss tangent (tan δ) of 0.007 with the thickness of 1.6 mm. The size of an antenna is about 105 mm × 80 mm. The proposed antenna meets the requirements of an antenna which is operating at 2.4GHz with a bandwidth of 200 MHz; hence, it is found to be suitable for Wi-Fi applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.