S.O. AZI

Expanding noncontact techniques for monitoring groundwater level variations to include laser based devices has been limited in the past by the low reflectivity of water to laser light The advances made in the realization of highly sensitive receivers has greatly enabled Laser devices with the prospect for effective noncontact monitoring of groundwater levels. In this work a real-time groundwater level monitoring devices was implemented using a LiDAR-lite v3HP laser-based sensor, an Arduino Uno rev 3 microcontroller, and an ESP8266 Wi-Fi module. Hardware implementation involved interfacing the microcontroller with the LiDAR-lite, the Wi-Fi module, a 16 x 2 liquid crystal display and other necessary basic electronic components. The software implementation involved writing, editing, compiling and uploading codes through the Arduino ide unto the microcontroller. The implemented prototype was powered by a 20,000mAH, 5V power bank and deployed on two artesian wells to collect depth to water surface data which were uploaded automatically to ThingSpeak platform. Measurements at various times taken with the device were compared with manual measurements from a calibrated tape. A correction factor was applied to correct measurement residuals. Results of the validation showed that measured values were uploaded to the ThingSpeak platform an average of 33 seconds which could be reconfigured to longer timeframes. The results were remotely accessed on the platform. A correlation graph of measurement before and after applying the correction revealed a near perfect correlation coefficient of 0.99995 for the LiDAR readings for both pre-correction and post correction measurements; confirming a strong linear relationship with tape measurements. The coefficient of variation, root mean square error and limits of agreement from the Bland Altman’s plots all ascertained the improvement in post-correction measurements.

Expanding noncontact techniques for monitoring groundwater level variations to include laser based devices has been limited in the past by the low reflectivity of water to laser light The advances made in the realization of highly sensitive receivers has greatly enabled Laser devices with the prospect for effective noncontact monitoring of groundwater levels. In this work a real-time groundwater level monitoring devices was implemented using a LiDAR-lite v3HP laser-based sensor, an Arduino Uno rev 3 microcontroller, and an ESP8266 Wi-Fi module. Hardware implementation involved interfacing the microcontroller with the LiDAR-lite, the Wi-Fi module, a 16 x 2 liquid crystal display and other necessary basic electronic components. The software implementation involved writing, editing, compiling and uploading codes through the Arduino ide unto the microcontroller. The implemented prototype was powered by a 20,000mAH, 5V power bank and deployed on two artesian wells to collect depth to water surface data which were uploaded automatically to ThingSpeak platform. Measurements at various times taken with the device were compared with manual measurements from a calibrated tape. A correction factor was applied to correct measurement residuals. Results of the validation showed that measured values were uploaded to the ThingSpeak platform an average of 33 seconds which could be reconfigured to longer timeframes. The results were remotely accessed on the platform. A correlation graph of measurement before and after applying the correction revealed a near perfect correlation coefficient of 0.99995 for the LiDAR readings for both pre-correction and post correction measurements; confirming a strong linear relationship with tape measurements. The coefficient of variation, root mean square error and limits of agreement from the Bland Altman’s plots all ascertained the improvement in post-correction measurements.

Expanding noncontact techniques for monitoring groundwater level variations to include laser based devices has been limited in the past by the low reflectivity of water to laser light The advances made in the realization of highly sensitive receivers has greatly enabled Laser devices with the prospect for effective noncontact monitoring of groundwater levels. In this work a real-time groundwater level monitoring devices was implemented using a LiDAR-lite v3HP laser-based sensor, an Arduino Uno rev 3 microcontroller, and an ESP8266 Wi-Fi module. Hardware implementation involved interfacing the microcontroller with the LiDAR-lite, the Wi-Fi module, a 16 x 2 liquid crystal display and other necessary basic electronic components. The software implementation involved writing, editing, compiling and uploading codes through the Arduino ide unto the microcontroller. The implemented prototype was powered by a 20,000mAH, 5V power bank and deployed on two artesian wells to collect depth to water surface data which were uploaded automatically to ThingSpeak platform. Measurements at various times taken with the device were compared with manual measurements from a calibrated tape. A correction factor was applied to correct measurement residuals. Results of the validation showed that measured values were uploaded to the ThingSpeak platform an average of 33 seconds which could be reconfigured to longer timeframes. The results were remotely accessed on the platform. A correlation graph of measurement before and after applying the correction revealed a near perfect correlation coefficient of 0.99995 for the LiDAR readings for both pre-correction and post correction measurements; confirming a strong linear relationship with tape measurements. The coefficient of variation, root mean square error and limits of agreement from the Bland Altman’s plots all ascertained the improvement in post-correction measurements.

This study examines the optimal battery specifications for a 5kVA pure sine wave inverter system, focusing on the selection of suitable batteries to ensure efficient, reliable, and cost-effective performance. The research evaluates key factors such as battery capacity, voltage, cycle life, depth of discharge (DoD), and energy efficiency. Given the growing demand for backup power in residential and commercial settings, selecting the right battery is crucial for maximizing operational efficiency and system longevity. Simulation models were used to assess the performance of lead-acid and lithium-ion batteries under varying operational conditions. The findings revealed that lithium-ion batteries outperformed lead-acid batteries in key areas, including round-trip efficiency (95% vs. 75%), cycle life (3,500–5,000 cycles vs. 500–1,000 cycles), and DoD (80% vs. 50%). These advantages made lithium-ion batteries the most suitable choice for a 5kVA inverter system, offering superior performance and energy utilization. In conclusion, lithium-ion batteries, despite their higher initial cost, provide a more efficient and sustainable solution for 5kVA pure sine wave inverter systems. Their longer lifespan, higher efficiency, and better energy storage make them the preferred option for optimizing system performance and reducing long-term operational costs.

The Digitally Programmable Temperature/Time-Based Control System puts forth a system which enables users to choose the preferred temperature for the water to be heated while the device is in the temperature mode. The design is built with the objective of implementing a digital temperature monitoring circuit that will collect the temperature of water and send the value, digitally to a microcontroller and to create an alerting mechanism that will be in the form of an audio alarm and a visual display to alert the operator that an operation is done. By also providing precise temperature regulation and accurate timing the water heater will turn on when the user sets the desired temperature via the input switches, and the screen will begin counting down from the chosen time to zero. A signal from the microcontroller will be sent to the transistor's base through the resistor when the water reaches the specified temperature, cutting off the power to the heater. In order to activate the relay, the transistor must become saturated. Given that the heater is linked to the relay's typically open contact, the water heater will be turned off. The flow chart were established, which helped with the proper circuit diagram design and simulations utilizing electrical simulation software like PROTEUS ISIS. The MIDE-written assembly language program was translated to machine code using TOPWIN6, and then burnt into the microcontroller IC using a universal programmer. The 555 timer, which is connected in the Astable mode, will be activated at the same moment by the microcontroller depending on the written program stored in its ROM. This will enable the buzzer to pulse and an alarm to sound with an LED flashing. The complete system operates on a 5 volts power supply which is
obtained from the public mains. This design makes use of an efficient and low-cost technology for controlling the appliances thus minimizing the power wastage. The results showed that the developed system provided accurate temperature control with a deviation of less than 1°C, and precise timing control with a deviation of less than 5 seconds.

The Digitally Programmable Temperature/Time-Based Control System puts forth a system which enables users to choose the preferred temperature for the water to be heated while the device is in the temperature mode. The design is built with the objective of implementing a digital temperature monitoring circuit that will collect the temperature of water and send the value, digitally to a microcontroller and to create an alerting mechanism that will be in the form of an audio alarm and a visual display to alert the operator that an operation is done. By also providing precise temperature regulation and accurate timing the water heater will turn on when the user sets the desired temperature via the input switches, and the screen will begin counting down from the chosen time to zero. A signal from the microcontroller will be sent to the transistor's base through the resistor when the water reaches the specified temperature, cutting off the power to the heater. In order to activate the relay, the transistor must become saturated. Given that the heater is linked to the relay's typically open contact, the water heater will be turned off. The flow chart were established, which helped with the proper circuit diagram design and simulations utilizing electrical simulation software like PROTEUS ISIS. The MIDE-written assembly language program was translated to machine code using OPWIN6, and then burnt into the microcontroller IC using a universal programmer. The 555 timer, which is connected in the
Astable mode, will be activated at the same moment by the microcontroller depending on the written program stored in its ROM. This will enable the buzzer to pulse and an alarm to sound with an LED flashing. The complete system operates on a 5 volts power supply which is obtained from the public mains. This design makes use of an efficient and low-cost technology
for controlling the appliances thus minimizing the power wastage. The results showed that the developed system provided accurate temperature control with a deviation of less than 1°C, and precise timing control with a deviation

The study is focused on the measurement of temperature using fiber optic sensor using an OTDR to measure attenuation

An inverter is an electronic device use to convert direct current (DC) to an alternating current (AC). The alternating current can be set at a required voltage and frequency, which depends totally on the transformer, control circuit (chipset) and switching use during the time of production. An inverter is essentially a household device that convert power stored in a battery, windmill, solar panel to power every household appliance within it load capacity. That is to say, it supplies AC power from a DC source. Solid state inverter does not have any moving part like motor and areused in wide range of applications, from small switching power supplies in computers to heavy electric utility high voltage DC applications that transport large amount of power. Also, an inverter performs the opposite function of a rectifier. When designing an inverter, there is one thing you want to be cautious of, which is; what appliances am I using with the inverter. After Designing, the circuit was divided into four stages which are the; Drivers stage, Buffering stage, Oscillation and the Output stage. All these stages put together make up a whole inverter