Đồ án tốt nghiệp - Design system for controlling and monitoring CO2 concentration in the building

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89.000đ

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#10377

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Đồ án tốt nghiệp ngành Công nghệ Kỹ thuật điện, điện tử - Design system for controlling and monitoring CO2 concentration in the building - Trường Đại học Sư phạm Kỹ thuật Thành phố Hồ Chí Minh (HCMUTE)

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Ngày đăng	23/01/2026

MINISTRY OF EDUCATION AND TRAINING
HO CHI MINH UNIVERSITY OF TECHNOLOGY AND EDUCATION
FACULTY OF INTERNATIONAL EDUCATION


GRADUATION PROJECT

DESIGN SYSTEM FOR CONTROLLING AND
MONITORING CO2 CONCENTRATION IN THE
BUILDING.
Student’s name:

Student’s ID:

HA GIA HUY

19142098

LAM QUANG BUU 19142087
Major:

ELECTRICAL AND ELECTRONICS
ENGINEERING

Supervisor:

LE TRONG NGHIA, PhD.

Ho Chi Minh, June 2024

1
`

THE SOCIALIST REPUBLIC OF VIETNAM

Independence – Freedom– Happiness

Ho Chi Minh City, June 20, 2024

GRADUATION PROJECT ASSIGNMENT
Student name: Ha Gia Huy

Student ID: 19142098

Student name: Lam Quang Buu

Student ID: 19142076

Major: Electrical and electronics engineering

Class: 1914CLA3

Supervisor: Le Trong Nghia, PhD.

Phone number: _________________

Date of assignment: 24/02/2024

Date of submission: 20/06/2024

1. Project title: Design system for controlling and monitoring CO2 concentration in the bulding.
2. Initial materials provided by supervisor: ___________________________________
3. Content of the project:
-

Design a model to monitor CO2 levels in a building.

-

Design the interface for monitoring and controlling the system.

-

Operating and monitoring the BMS system and assessing the results.

4. Final product:
-

1 project report.

-

1 operational model for controlling CO2 levels.

-

1 interface on the Website platform.
CHAIR OF THE PROGRAM

SUPERVISOR

(Sign with full name)

(Sign with full name)

ii

THE SOCIALIST REPUBLIC OF VIETNAM

Independence – Freedom– Happiness

***

SUPERVISOR’S EVALUATION SHEET
Student name : Ha Gia Huy
Student ID : 19142098
Student name : Lam Quang Buu
Student ID : 19142087
Major: Electrical and Electronics Engineering Technology
Project title: Design system for controlling and monitoring CO2 concentration in the
bulding.
Supervisor: Le Trong Nghia, PhD
EVALUATION
1. Content of the project:
.......................................................................................................................................
.......................................................................................................................................
.......................................................................................................................................
2. Strengths:
.......................................................................................................................................
.............
...

...

Ground wire

DI1, DI2, DI3, DI4

Digital input terminals

VF1

Analog Input 1

FM1

Analog Output 1

TIA, TIB, TIC

Multi-function relay output

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Appendix 3: Variable Frequency Drive IG5A.

Figure 4: Connection Diagram of IG5A Variable Frequency Drive [8]
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Features
-

Utilizes sensorless vector control, PID algorithm, and ground fault
protection.

-

Can handle 150% overload for 60 seconds.

-

Manual setup and operation via built-in buttons or control through RS485
communication protocol.

Specifications
Table PL3.1: IG5A Variable Frequency Drive Specifications
Model

SV037iG5A-4

Input voltage

3 phase 380~480V

Output voltage

3 phase 380~480V

Input current

10.5A

Output current

8A

Input frequency

50-60Hz

Output frequency

0.1~400Hz

Device pinout diagram

Figure 5: IG5A Variable Frequency Drive Pinout Diagram
• P1~P8: Multi-function input terminals.
• MO: Multi-function output terminal.
• CM: Common terminal.
• MG: Ground terminal for external power supply.
• 24: External power supply.
• 3A, 3B, 3C: Relay outputs.
• VR: Power supply for external potentiometer.
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• V1: Voltage input (-12V~+12V).
• I: Current input (0~20mA).
• AM: Analog output signal (Voltage: 11V, Current: 10mA).
• S+, S-: RS485 communication protocol terminals.
Appendix 4: CO2 sensor VELT-W-CO2-I4.
The VELT-W-CO2-I4 CO2 sensor is a type of sensor that measures carbon
dioxide concentration with a 4-20mA output.

Figure 6: VELT-W-CO2-I4 CO2 Sensor [9]
Table PL4.1. Specifications of VELT-W-CO2-I4 CO2 Sensor
Model No.
Detectable gas type
Operating voltage range

VELT-W-CO2-I4
CO2
10 ~ 30 VDC

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Average current

20mA

Detectable concentration range

0 ~ 5000 ppm

Operating temperature range

-10 ~ 50 C

Operating humidity range

0 ~ 80% RH

Figure 7: Wiring diagram of the CO2 sensor VELT-W-CO2-I4
-

Vin, GND: Supply DC power 10-30V to the CO2 sensor.

-

PWM pin: Outputs PWM signal.

Appendix 6: Hongke 130FLJ5 fan specifications

Figure 8: Hongke 130FLJ5 fan
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Main specifications of the Hongke 130FLJ5 fan
-

Model: 130FLJ5.

-

Voltage: 220VAC.

-

Current: 0.55A.

-

Frequency: 50Hz.

-

Power: 120W.

-

Speed: 2600RPM.

-

Airflow: 330m3/h.

-

Pressure: 350Pa.

-

Noise level: = 72dB.

Appendix 7: Auramax VP4 fan specifications.

Figure 9: Auramax VP4 Fan.
Main specifications of the Auramax VP4 fanModel: VP4.
-

Model: VP4.

-

Voltage: 220VAC.

-

Frequency: 50Hz.

-

Power: 14W.

-

Airflow: 107m3/h.

-

Noise level: =35dB.

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