HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION
FACULTY OF INTERNATIONAL EDUCATION

GRADUATION PROJECT
DESIGN SMART CAR PARKING SYSTEM
Liêu Phú Thuận An
Student ID: 19142002
Trịnh Hoàng Thương
Student ID: 19142053
Major: ELECTRICAL AND ELECTRONICS ENGINEERING
TECHNOLOGY
Supervisor: Ph.D LÊ TRỌNG NGHĨA

Ho Chi Minh City, June 2024

HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION
FACULTY OF INTERNATIONAL EDUCATION

GRADUATION PROJECT

DESIGN SMART CAR PARKING SYSTEM
Liêu Phú Thuận An
Student ID: 19142002
Trịnh Hoàng Thương
Student ID: 19142053
Major: ELECTRICAL AND ELECTRONICS ENGINEERING
TECHNOLOGY
Supervisor: Ph.D LÊ TRỌNG NGHĨA

Ho Chi Minh City, June 2024

THE SOCIALIST REPUBLIC OF VIETNAM
Independence – Freedom– Happiness



Ho Chi Minh City, June 20, 2024

GRADUATION PROJECT ASSIGNMENT
Student name: Liêu Phú Thuận An

Student ID: 19142002

Student name: Trịnh Hoàng Thương

Student ID: 19142503

Major: Electrical and Electronics Engineering

Class: 19142CLA

Technology
Supervisor: Ph.D Lê Trọng Nghĩa

Phone number: _________________

Date of assignment: _____________________

Date of submission: _____________

1. Project title: Design smart car parking system.
2. Initial materials provided by supervisor: ___________________________________
3. Content of the project:
− ion of devices in the model.
− Design and finalize the hardware of the model.
− Design the interface for managing a parking car.
− Build and complete models as required.
− Operate the model and evaluate the system.
4. Final product:
− 01 Project report documents.
− Complete model of the parking car according to original design requirements.
− Management interface according to original design requirements.
CHAIR OF THE PROGRAM

SUPERVISOR

(Sign with full name)

(Sign with full name)

THE SOCIALIST REPUBLIC OF VIETNAM
Independence – Freedom– Happiness
-

SUPERVISOR’S EVALUATION SHEET
Student name: Liêu Phú Thuận An

Student ID: 19142002

Student name: Trịnh Hoàng Thương

Student ID: 19142503

Major: Electrical and Electronics Engineering Technology.
Project title: Design smart car parking system.
Supervisor: Ph.D Lê Trọng Nghĩa.
EVALUATION

1. Content of the project:
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...

...
teristics of the 4-Relay High/Low Trigger Module (5VDC) include:
- Four separate relays capable of independent control.
- Activated by control signals from microcontrollers such as Arduino, Raspberry Pi, or any
other compatible electronic circuit with suitable outputs.

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- Supports activation both at high-level logic (High Level) and low-level logic (Low
Level).
- The relays typically have varying capabilities to handle different current and voltage loads
depending on the specific model.
This module is commonly used in a wide range of electronic projects, automation,
and IoT (Internet of Things) applications where remote control of electrical devices is
essential. Utilizing the 4-Relay High/Low Trigger Module (5VDC) simplifies the control
process and protects other electronic components from unwanted effects caused by
electrical loads.
Pinout diagram

Figure 5.10 Pinout diagram Module 4 Relay Trigger H/L (5VDC)
Technical specifications:
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-

Power supply (VCC and GND):

-

VCC (5VDC): This pin is connected to a 5VDC power source to supply power to
the module.

-

GND: Ground pin, connects to the common ground of the circuit.

-

Relay control pins (IN1, IN2, IN3, IN4):

-

This module has 4 relays, each with its own control pin (IN1, IN2, IN3 and IN4).

-

These pins receive control signals from electronic circuits such as Arduino,
Raspberry Pi, or other microcontrollers. When a control signal is received, the relay
switches between open and closed states.

-

Load output pins (NO, NC, COM):

-

NO (Normally Open): This pin is connected to one side of the electrical device (e.g.,
a light) and opens when the relay is activated.

-

NC (Normally Closed): This pin is connected to one side of the electrical device and
closes when the relay is activated (in the case of a Normally Closed relay).

-

COM (Common): This pin is the common connection point of the relay, connected
to the other side of the electrical device.

-

Relay status indicator LEDs:

-

Each relay typically has an LED to indicate its operating status (usually green or
red).

Technical specifications:
-

Operates with 5VDC power supply.

-

4 Relays capable of switching at a trigger voltage of 0V, hence compatible with both
5V and 3.3V signals (external power supply required). Each relay consumes
approximately 80mA of current.

-

Maximum switching voltage: AC250V - 10A or DC30V - 10A.

-

Includes indicator LEDs for each relay to indicate its switching state.

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