Design and implementation of a system for monitoring PH level in water
(2024) EITM02 20241Department of Electrical and Information Technology
- Abstract
- With the development of the global economy and human society,
population growth and urbanization, water resources are becoming more
and more important, and the monitoring of water resources is also crucial.
Therefore, this article designed a system for monitoring PH level in water,
and designed a wireless transmission system based on LoRa technology.
According to the actual application requirements of the system, the
hardware circuit includes Power supply management module, Variable gain
amplifier module, Analog-to-Digital Converter, Microcontroller and LoRa
communication module.
In the testing part, another system for collecting water pH and
temperature with Bluetooth transmission function was tested. But in the end
... (More) - With the development of the global economy and human society,
population growth and urbanization, water resources are becoming more
and more important, and the monitoring of water resources is also crucial.
Therefore, this article designed a system for monitoring PH level in water,
and designed a wireless transmission system based on LoRa technology.
According to the actual application requirements of the system, the
hardware circuit includes Power supply management module, Variable gain
amplifier module, Analog-to-Digital Converter, Microcontroller and LoRa
communication module.
In the testing part, another system for collecting water pH and
temperature with Bluetooth transmission function was tested. But in the end
the PCB did not achieve the expected function. After research and analysis,
it was discovered that a problem occurred during manufacture that caused
the board not working properl (Less) - Popular Abstract
- With the development of the global economy and human society, population
growth and urbanization, water resources are becoming more and more
important, and the monitoring of water resources is also crucial. Therefore, this
article designed a system for monitoring PH level in water, and designed a
wireless transmission system based on Printed Circuit Board (PCB), with a
wireless communication module.
There are several requirements for this system after analysis. The very first is
system stability. The second one is low power consumption. The third one is it
needs remote wireless data transmission function. The last one easy to install
and cost-effective.
After analysis, I decided to use Long Range Radio Frequency (LoRa)... (More) - With the development of the global economy and human society, population
growth and urbanization, water resources are becoming more and more
important, and the monitoring of water resources is also crucial. Therefore, this
article designed a system for monitoring PH level in water, and designed a
wireless transmission system based on Printed Circuit Board (PCB), with a
wireless communication module.
There are several requirements for this system after analysis. The very first is
system stability. The second one is low power consumption. The third one is it
needs remote wireless data transmission function. The last one easy to install
and cost-effective.
After analysis, I decided to use Long Range Radio Frequency (LoRa) for wireless
communication system. It can maintain a large communication distance with low
power consumption. The slight disadvantage is that the data transmission rate is
relatively low. Therefore, LoRa is suitable for areas that have higher
requirements for network coverage and low power consumption but lower
transmission rates, and it perfectly matches the application scenarios of the
required systems.
According to these requirements, this design consists of a power supply
management module, a variable gain amplifier module, an Analog-to-Digital
Converter (ADC) module, a microcontroller module, a LoRa wireless
communication module and an external memory. The analog signal received
from the pH sensor enters the amplifier for amplification, then enters the ADC
to be converted into a digital signal, and then enters the microcontroller STM32
for processing. The processed data will be stored in external memory or
transmitted by the SX1278 radio frequency chip in LoRa wireless communication
mode.
As for the testing part, I tested a new manufactured design with the similar
function of my design, because mine cannot be manufactured due to time issue
and cost issue. After trying hard, the testing failed, the device cannot work
properly. After analysis, I believe it is because the microcontroller is isolated.
Since the order quantity is less than ten pieces, manufacturers usually choose
manual soldering instead of automatic soldering due to economic factors and
time efficiency considerations. The microcontroller is a Surface Mount Device
(SMD). Manually soldering SMDs has a higher risk of failure. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9151064
@misc{9151064,
abstract = {{With the development of the global economy and human society,
population growth and urbanization, water resources are becoming more
and more important, and the monitoring of water resources is also crucial.
Therefore, this article designed a system for monitoring PH level in water,
and designed a wireless transmission system based on LoRa technology.
According to the actual application requirements of the system, the
hardware circuit includes Power supply management module, Variable gain
amplifier module, Analog-to-Digital Converter, Microcontroller and LoRa
communication module.
In the testing part, another system for collecting water pH and
temperature with Bluetooth transmission function was tested. But in the end
the PCB did not achieve the expected function. After research and analysis,
it was discovered that a problem occurred during manufacture that caused
the board not working properl}},
author = {{Hou, Yue}},
language = {{eng}},
note = {{Student Paper}},
title = {{Design and implementation of a system for monitoring PH level in water}},
year = {{2024}},
}