In the RF Transmitter part, there will be an SOS button along with a 433 MHz RF transmitter, which will transmit the data to the receiver part wirelessly. The circuit diagrams for each section is described as follows: Women Safety system with GPS Tracking & Alerts can be subdivided into two sections such as Transmitter and Receiver section. We have previously interfaced GSM with Arduino and build many projects using the GSM module including the accident alert system. Frequency bands: SIM900A Dual-band: EGSM900, DCS1800.Power saving mode: Sleep Mode power consumption=.5mA.This is an SMT type module and designed with a very powerful single-chip processor integrating AMR926EJ-S core, which is very popular in various industrial products. The GSM/GPRS Modem is having an internal TCP/IP stack which enables us to connect with the internet via GPRS. The baud rate is configurable from 1200-115200 through AT command. The frequency bands of the GSM modem can be set by AT Commands. This is a GSM/GPRS-compatible Quad-band cell phone, which works on a frequency of 850/900/1800/1900MHz and which can be used for various applications such as access the Internet, make a voice call, send and receive SMS, etc. We have previously interfaced GPS with Arduino and build many projects using GPS modules including vehicle tracking. RX, TX: UART communication pins with Microcontroller.This module supports the baud rate from 4800-230400 bps and has the default baud of 9600. This 50-channel u-blox 6 positioning engine boasts a Time-To-First-Fix (TTFF) of under 1 second. It can track up to 22 satellites on 50 channels and have a very impressive sensitivity level which is -161 dBm. The core heart inside the GPS receiver module is the NEO-6M GPS chip from u-blox. It has a data backup battery so that the module can save the data when the main power is shut down accidentally. With the on-board signal indicator, we can monitor the network status of the module. This receiver has the ability to sense locations and track up to 22 satellites and identifies locations anywhere in the world. The NEO-6M GPS module is a popular GPS receiver with a built-in ceramic antenna, which provides a strong satellite search capability. We have also used an RF Transmitter and receiver module for wireless communication between the Band and Receiving device with GPS/GSM. For this, here we are using an Arduino which can be interfaced with GSM and GPS module for sending SMS alerts and getting the location coordinates. Using this information, the police will be able to save the victim from the location. Here we will build a band that can be worn by women, using which they can inform police or anyone, using SOS emergency SMS along with the current location. With all the technology available to us in recent times, it's not hard to build a safety device for women which will not only generate an emergency alarm but also send a message to your friends, family, or concerned person.
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