Our Developments

Over the past few years, we have designed and fabricated multiple vehicles, participating in various competitions. These are all our vehicles which we have manufactured over the course of the team's existence.

Lapras 2.0

Our latest development

Our latest Autonomous Underwater Vehicle, prepared for the RoboSub 2022 competition. LAPRAS is the flagship Autonomous Underwater Vehicle developed at Delhi Technological University.Using the insights from Robosub 2021 , Lapras 2.0 has enhanced upon the capabilities of its predecessor. Manipulators have been upgraded for better dynamics in autonomous operations.Vision algorithms have been finely tuned which has led to a massive improvement in the success rate of object detection.

Lapras 2.0 Journal

Lapras Arkaja 2.0 Varuna 3.0 Arkaja Varuna 2.0 Arya Zariya Zyra 2.0 Zyra 1.0 Varun
Lapras

Lapras

Our latest Autonomous Underwater Vehicle, prepared for the RoboSub 2021 competition. The vehicle marks a significant improvement on our previous vehicles since it is our latest vehicle equipped with a functioning acoustics system. The end product is a cost-effective, robust and small design capable of underwater gripping, dropping, torpedo launch, acoustic localization and advanced image recognition algorithms.

Lapras Journal

Research And Development


Power Distribution Board

A Power Distribution Board (PDB) was designed to power all the electronics inside the vehicle. The 12VDC input is used to power the GPIO board. PDB has buck converters that convert the input voltage to 7V and 5.1V respectively. A DPDT switch has been used as a kill switch, connected between the GPIO board and the PDB, to halt the operation of the vehicle.

Power Distribution Board

GPIO Board

A GPIO board has been developed for the integration of sensors and actuators. The Arduino Mega 2560 has been used as the microcontroller and is powered through the PDB. In turn, the Arduino powers the sensors on the GPIO board, receives the sensor data and provides the PWM inputs to the Electronic Speed Controllers and the Servo Motors as well. We have developed a common PCB that act as a routing interface between all the components in the electronic system thus eliminating the jumper wires. It enables us to use various pins from the micro-controller with greater accessibility and better connections. It also contains pair of mosfet switches in order to command actuators used for manipulators. As the connections between the components are more reliable and secured thus it helps the team in rapid troubleshooting.

GIPO Board

Cutoff/Switching Circuit

Every lithium polymer battery has a certain voltage beyond which if operated the battery goes into deep discharge and is rendered useless. So the team has developed a cutoff/switching circuit which successfully cuts of a battery from operation before it can reach deep discharge and at the same time switches to a second battery. This enables a fluid output to the bot throughout its operation and also preserves the battery for future use.

Custom Leak Sensor

In the emergency situations the undesirable circumstances and other manual assembly errors may cause leakage in the enclosure containing the electronic and the power stack. Since the components are costly and are prone to damage under such conditions, we have developed a custom leak sensor in order to send signal on the shore about the leakage and also commands he siren to inform the diver as many times the leakage is not clearly visible to the diver.