Đồ án tốt nghiệp - Design and contruction of automatic watering model for durian trees using PCWIP

FACULTY OF INTERNATIONAL EDUCATION
HCMC UNIVERSITY OF TECHNOLOGY AND EDUCATION

--

GRADUATION PROJECT
DESIGN AND CONSTRUCTION OF AUTOMATIC
WATERING MODEL FOR DURIAN TREES USING PLC
COMBINED WITH IMAGE PROCESSING
Student:

PHAN THANH MINH

Student ID:

20142234

Student:

PHAN THAI LAM

Student ID:

20142223

Major:

ELECTRICAL AND ELECTRONIC ENGINEERING
TECHNOLOGY

Advisor:

Ta Van Phuong, Ph.D.

Ho Chi Minh City, June 2025

FACULTY OF INTERNATIONAL EDUCATION
HCMC UNIVERSITY OF TECHNOLOGY AND EDUCATION
--

GRADUATION PROJECT
DESIGN AND CONSTRUCTION OF AUTOMATIC
WATERING MODEL FOR DURIAN TREES USING PLC
COMBINED WITH IMAGE PROCESSING
Student:

PHAN THANH MINH

Student ID:

20142234

Student:

PHAN THAI LAM

Student ID:

20142223

Major:

ELECTRICAL AND ELECTRONIC ENGINEERING
TECHNOLOGY

Advisor:

Ta Van Phuong, Ph.D.

Ho Chi Minh City, June 2025

Acknowledgements
Throughout the process of carrying out this thesis, our team has received
valuable support and companionship from many individuals. First and
foremost, we would like to express our deepest gratitude to Ta Van Phuong,
Ph.D., lecturer at Ho Chi Minh City University of Technology and Education,
for his dedicated guidance, professional expertise, and the time he devoted to
accompanying us. His sincere feedback and enthusiastic support laid a strong
foundation for us to complete this project effectively.
We also wish to extend our heartfelt thanks to the faculty members of the
Department of Electrical and Electronics Engineering for equipping us with
solid foundational knowledge, which greatly contributed to the successful
outcome of this thesis.
Lastly, we are deeply grateful to our families and friends for being a steady
source of encouragement, motivation, and emotional support throughout this
journey.
Sincerely, thank you!

ABSTRACT
In the context of ongoing societal development, the application of science and
technology, particularly automatic control engineering, to various aspects of life
and agricultural production is becoming increasingly essential to enhance
efficiency and quality. In Vietnam, a nation with agricultural strengths,
modernizing production processes and overcoming the dependence on manual
labor and outdated technology is critically important. Automatic irrigation
systems represent an effective solution that helps save manpower, conserve
water resources, and increase precision in crop care.
With the objective of accessing and a
...

...
ertilizer) # DB1.DBX8.1: On_fertilizer_valve
set_bool(data, 8, 2, pump) # DB1.DBX8.2: Pump
set_bool(data, 8, 4, pump) # DB1.DBX8.2: Pump
plc.db_write(1, 0, data)
print(f Gửi PLC: Water: {water}, Fertilizer: {fertilizer}, Pump: {pump})
except Exception as e:
print(Lỗi actuator:, e)
finally:
try:
if plc.get_connected():
plc.disconnect()
except:
pass
def check_and_trigger_plc():
doc_sys_ref = db.collection(plc_events).document(command)
doc_sys = doc_sys_ref.get()

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query
=
db.collection(durian_stages).order_by(status_d_at,
direction=firestore.Query.DESCENDING).limit(1)
docs = list(query.stream())
doc_sys_stage = docs[0] if docs else None
if not doc_sys.exists or doc_sys_stage is None or not doc_sys_stage.exists:
print(Không tìm thấy document plc_events/command)
return
data = doc_sys.to_dict()
watering_completed = data.get(is_completed, True)
mode = data.get(mode, unknown)
stage = doc_sys_stage.to_dict().get(stage, unknown)
action = data.get(action, unknown)
print(fstage {stage})
if watering_completed or mode == unknown or stage == unknown:
print(fKhông có lệnh tưới nước. Đang chờ...)
return
date_now = datetime.now(pytz.timezone(Asia/Ho_Chi_Minh))
if mode == auto:
stage_number = stage_map.get(stage)
send_to_plc_mode_auto(stage, stage_number, False)
if mode == manual:
send_to_plc_mode_manual(action, stage)
doc_sys_ref.set({
is_completed: True,
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completed_at: date_now
}, merge=True)
print(fCall PLC Completed. Stage: {stage})
def monitor_plc_loop():
try:
plc = snap7.client.Client()
plc.connect(PLC_IP, 0, 1)
print( Đã kết nối PLC thành công)
while True:
try:
data = plc.db_read(1, 0, 30) # Đọc block DB1 từ byte 0
humidity = get_real(data, 4)
temperature = get_real(data, 26)
now = datetime.now(pytz.timezone(Asia/Ho_Chi_Minh))
doc_data = {
humidity: round(humidity, 2),
temperature: round(temperature, 2),
dAt: now.astimezone(timezone.utc)
}
db.collection(plc_monitor).add(doc_data)
# print(f Firestore d: {doc_data})
except Exception as e:
print(f Lỗi đọc dữ liệu hoặc ghi Firestore: {e})
time.(5)
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except Exception as conn_err:
print(f Không thể kết nối PLC: {conn_err})
finally:
try:
if plc.get_connected():
plc.disconnect()
print( PLC disconnected)
except:
pass
if __name__ == __main__:
try:
while True:
check_and_trigger_plc()
time.(3)
except KeyboardInterrupt:
print(\\nĐã dừng chương trình theo yêu cầu người
dùng! (KeyboardInterrupt))

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