We often find illegal immigrants moving from one

A.
Layout of the System 
To make this project we use IR sensor, node MCU, 
BLYNK cloud server, Node MCU always connected to the 
server (cloud) by Wi-Fi service and have an ability to send 
the HTTP request to the server by giving a notification. This 
notification stores in the server database and server notice 
center update. When server update, then this update 
notification sends to the user. User has an Arduino android 
app (Blynk app), and Web quickly observes this notification. 
Then from the app alarm is turned ON. Individual devices 
are shown in Fig. 8. 
 
Fig. 8. Overall system function. 
B.
Discussion 
We have implemented a simple basic circuit diagram to 
connect the system with the send signal via Wi-Fi. There are 
two following circuits. One of it connects D1 pin of the 
NodeMCU with the GND pin of the Buzzer and LED light 
represented in Fig. 9. And the other circuit shows how the 
infrared sensor is connected to the NoeMCU by connecting 
the wires with the source voltage of 3V, GND and analog 
pin (A0) [Fig. 10]. The basic diagram is given below: 
 
Fig. 9. Circuit connection, connecting the D1 pin with NodeMCU and the 
GND pin with buzzer and the LED light. 
Fig. 10. Circuit of NodeMCU connecting the 3v, GND and A0 with the IR 
sensor. 
International Journal of Information and Electronics Engineering, Vol. 10, No. 2, June 2020
47

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When an intruder crosses the respective area, the signal is 
sent to Node MCU. It is directly sent via Wi-Fi to the Blynk 
cloud. It then sends a notification to the app (smartphone). 
See Fig. 11 the notification is taken from the app. Inside the 
app, we can see the notification message. And then we can 
go to the BLYNK app interface and from there we can turn 
ON the buzzer from the app. In Fig. 12 we can see the 
Buzzer is currently OFF. When the Buzzer is pressed it will 
turn ON the Buzzer. In the future, we will add a camera on 
this project and we will improve our detection area as well 
as we can use the ultrasonic sensor instead of the IR sensor. 
It can be used to detect a long-range object. For better and 
high-speed notification system we can use raspberry pi 3 B+ 
for make server request. Web and Android app user 
interface design can make more user-friendly and add more 
feature better user experience. We can use better and 
advance database system to add more data and space. 
Fig. 11. Motion detected and the notification message pops up over the 
smartphone. 
Fig. 12. Blynk app interface where the buzzer alarm is currently OFF. 
When it is turned ON the Buzzer and lights is turned ON. 
IV.
M
ATERIALS AND 
M
ETHODS
A.
Hardware Device 

Node MCU esp32: 

The Node MCU ESP-32S [9] is one of the 
advancement board made by Node MCU to assess 
the ESP-WROOM-32 module. It depends on the 
ESP32 microcontroller that flaunts Wi-Fi, Bluetooth, 
Ethernet, and Low Power bolster all in a solitary chip. 
Propelled API for equipment IO, which can 
significantly decrease the excess work for designing 
and controlling equipment. Code like Arduino, yet 
intelligently in content. Occasion driven API for 
system applications, which facilitates designers 
composing code running on a 5mm*5mm estimated 
MCU in Nodes style. Significantly accelerate your 
IOT application creating process. Under WI-FI MCU 
ESP8266 incorporated and easy to prototyping 
improvement pack. We give the best stage to IOT 
application advancement at the most minimal 
expense. 

BLYNK app 

Wire 

Breadboard 

IR Sensor 

An infrared sensor [10] is an electronic gadget with 
simple configuration, that radiates so that we can 
detect a few parts of the environment. An IR sensor 
can quantify the warmth of an item just as it 
recognizes the motion when an object is passed in 
front of it. These sorts of sensors emit infrared 
radiation and receive the radiation via the receiver 
that is called passive Infrared sensor.

Buzzer 

LED 
In our task, we are working with Node MCU esp32. Node 
MCU is an open source IoT stage. It incorporates firmware 
which keeps running on the ESP32 Wi-Fi SoC from 
Espressif Systems and equipment which depends on the 
ESP-12 module. [10] Node MCU esp32 Wi-Fi module is 
working with an infrared sensor (IR). The recognition scope 
of the IR sensor is nearly around 2 cm to 30 cm. The sensor 
module is interfaced with Arduino having IO voltage 
dimension of 3.3V to 5V. 
The IR sensor has IR Transmitter that transmits the rays 
and IR receiver which receives the ray after getting any 
obstacle. It is shown in block diagram in Fig. 13. 
Fig. 13. IR transmitter and IR receiver sending and receiving rays. [10] 
An IR sensor, A is mounted over a wall there is a gap 
between the human and the IR is distance B. The rays split