Thursday, 5 March 2020


DESIGN GOALS
With a limited amount of power, the focus is primarily on the power to weight ratio of the vehicle. The only means to improve this critical parameter is to reduce the overall vehicle weight compromising the overall safety parameters of the vehicle. The objective of the frame design was to support the suspension systems, engine, steering and other systems while meeting the SAE regulations with special considerations given to safety of the occupants, ease of manufacturing, cost, quality, weight, and aesthetics. Moreover, care has been taken to ensure that there are minimum welds on the frame pipes and maximum bends ensuring better strength and less cost of production of the vehicle. 
Design Methodology:
Initial step: The design was initiated by a sketch. Our sketcher made an imaginary design of the bike with attractive aesthetics.
2) Following the sketch, Designers designed a frame in SOLIDWORKS 2016 considering all the parameters like wheel base, battery, motor, wiring, suspension, fork, dimensions.
3) After the completion of the frame design, we have done analysis on the frame in ANSYS 16.2. Analysis includes front impact test, rear impact test, side impact test and torsional test.
4) Based on the analysis result we have modified the design and finalized it.

TECHNICAL SPECIFICATIONS OF THE VEHICLE
Wheel base
52”
ride height
29.2”
Rake angle
25 degrees
Trail
80.87mm
Transmission type
Chain and single reduction
Front suspension
Conventional Telescopic suspension
Rear suspension
Dual
shocksuspension
Brakes
Independent hydraulic actuated disc brake and rear drum brake
Swing arm
Rectangular type
Motor
BLDC motor 1200W
Battery
Li-ion Battery
Centre to centre distance between the sprockets
32.5”


TECHNOLOGIES USED:
RASPBERRY PI:
1.       The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV, and uses a standard keyboard and mouse.
2.      It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python.
3.      It’s capable of doing everything you’d expect a desktop computer to do, from browsing the internet and playing high-definition video, to making spreadsheets, word-processing, and playing games.
4.      The Raspberry Pi has the ability to interact with the outside world, and has been used in a wide array of digital maker projects, from music machines and parent detectors to weather stations and tweeting birdhouses with infra-red cameras.
5.      Raspberry Pi is being used by kids all over the world to learn to program and understand how computers work.

NODE RED:
1.       Node-RED is a flow-based development tool for visual programming developed     originally by IBM for wiring together hardware devices, APIs and online services as part of the Internet of Things.
2.      Node-RED provides a web browser-based flow editor, which can be used to create JavaScript functions.
3.      Elements of applications can be saved or shared for re-use. The runtime is built on Node.js.
4.      The flows created in Node-RED are stored using JSON.
5.      In 2016, IBM contributed Node-RED as an open source JS Foundation project.
Innovations:
1.RFID License technology to start the bike:
RFID stands for radio frequency identification and it basically uses the radio waves to read the information on the tag. The RFID tags contains the embedded transmitter and receiver attached to an object.
RFID is fast and does not require any contact between the reader and the tag and they can be read from feet’s away.
An RFID system consists of two parts: Tag and Reader
RFID tag:
An RFID tag contains a chip for storing information about physical object and an antenna to receive and transmit a signal. A RFID tag can usually store 1KB of data but it is enough for storing the name, credit card number, unique identification number, birth date and some more information.
RFID Reader:
The RFID reader performs two functions: Transmit and receive. So, one can also say it a transceiver. The RFID reader contains an antenna, radio frequency module and a control unit.


RFID Arduino INTERFACING:
 Interface the RFID reader module with Arduino. The RFID reader we are going to              use is MFRC522 reader module and it communicates with the Arduino through SPI protocol. It operates at 13.56 MHz frequency.
The tags are based on MIFARE protocol and they have 1kb of memory. They also have a microchip that can perform arithmetic operations.
A relay switch is connected to the Arduino uno and the battery which starts the bike when we scan the RFID tag using reader module.
 TEMPERATURE AND HUMIDITY DATA VISUALIZATION:
DHT11 node is used in node red to connect the real time dashboard to the raspberry pi and dht11 sensor.
Details about the node DHT 11;
This is a Node Red node to manage connection to a DHT11 or DHT22 sensor on a Raspberry Pi. It allows you to specify the variables that define the connections to the sensor.
Configuring the node
One can specify the following:
The topic of the message - this is passed through so it can be used as an ID for the sensor.
The name of the node. This can be a unique value to tag the sensor, useful if you have multiple sensors connected.
The sensor type - this can be either DHT11 or DHT22.
The pin number scheme. This can be any of the BCM-GPIO scheme.
The final dashboard for the data visualization of humidity and temperature looks like the above figure.

AUTOMATIC HIGH BEAM LOW BEAM SWITCHING:
·        During night times so many accidents takes place due to the invisibility that is formed due to the high beam which is coming from the opposite vehicle.
·        To avoid this problem, an LDR sensor is used to detect the light intensity of the opposite vehicle.
·        According to that, the light can be switched between high beam to low beam or vice versa.
·        Arduino microcontroller is used to interface the module and to adjust the brightness of the bulb.
·        Interfacing of ldr module with Arduino can be as follows:

·        It solves the main accident problem due to invisibility in all over the world.
·        Nothing is precious than the life of a person.


DRIVER BEHAVIOUR ANALYSIS:
·        The behavior of a bike rider can be the primary cause for almost all the accidents in our world.
·        So by reading ones behavior we can avoid accidents in prior to the accident up to some extent.
·        Here the sudden accelerations by the driver can be recorded by using Arduino uno and the sd card module.
·        The lean angles of the bike while riding the bike can be recorded using gyroscope module.
·        Alcoholic sensor is used to detect the alcoholic levels in drivers’ body.
·        So, all these readings will be recorded in sd card and further can be send to the cloud.
·        All the data collected can be used to predict the behavior of the driver according to his situation, it can be further used to avoid severe accidents by controlling the battery of the bike using relay modules.
Obstacle Avoider:
·        Sometimes accidents take place due to the invisible obstacles on the roads.
·        The obstacles can be detected prior to hit it and can be visualized on the dashboard using ultrasonic module and the Arduino uno.
·        An ultrasonic sensor is an instrument that measures the distance to anobject using ultrasonic sound waves.
·        An ultrasonic sensor uses a transducer to send and receive ultrasonic pulses that relay back information about an object’s proximity.
·        High-frequency sound waves reflect from boundaries to produce distinct echo patterns.
·       
·        The sensor senses the object within its range and it sends the data to the microcontroller.
·        The data will be visualized on the main dashboard on the touch screen prior to it.
Automatic Protective Shield for Touch Display:
·        The costly touch screen won’t work if it is filled with rain water , so a protective shield is constructed.
·        When the rain is detected by the rain sensor, it sends the signals to the microcontroller board.
·        Then the servo motors installed in the shield rotates and it closes the touch screen, so that it protects the screen from water.








ELECTRICAL REPORT

TEAM BLIZZARDS

OUR BATTERY DATASHEET:


Details:
·        48V 75 Ah LiFePO4 Battery Pack
·        LF4875C70
·        E-Mobility Applications
·        Specially designed for E-Ricks Application
·        IP 55 Cabinets

Protection:
·        15S PCB installed with the battery pack to protect the battery from
·        Overcharge (>54.6V)
·        Over-discharge (<39 V)
·        Over drain (>70.0 Amp)
·        Short circuit
·        Reverse Polarity Protection

BATTERY TECH USED:
·        LiFePO4 Battery Pack
·      Lithium Iron Phosphate Batteries often termed as LFP Batteries or LiFePO4 batteries have the service run time of more than 5 years. LFP offers good electrochemical performance with low resistance. These batteries have better thermal stability than other chemistries of Li-Ion Batteries. The nominal Voltage of single cell of LFP is 3.2V. The applications of these batteries are often seen in E-Mobility, Solar Energy Storage etc. The advantage of using these kinds of batteries is that it has a high current rating and long cycle life, it also has good thermal stability, enhanced safety, and tolerance in unfavorable conditions.

 

CONTROLLER DATA SHEET:

Specification:
Brushed Controller:
Casing material: Aluminum
Motor brushed controller for Electric bicycle & scooter
Rated voltage: dc 48 v
Current limited: 35A
Rated power: 1200 w
Matching motor: dc brushed motor
Under Voltage Protection: 45V
Throttle:
Material: Plastic
Electric Bike scooter twist throttle accelerator with power display, 5Led battery indicator.
Throttle Works Voltage: DC5V
Speed Adjusting Signal: 0.8V-4.3V
Power display Voltage: DC 42V
Power display:
Normal: 48V above, 3 Led Green
Half: 47V ~ 42V, Led Yellow
Empty: 42V or less, Led Red
Rotation angle: 0 °~ 70 °
Working temperature: -20 ~ +50
Fits standard 7/8 inches(22.2mm) handle bars
Cable length is approximately 47 inches (1.2m)

Controller Wires Interface Definition:
Battery: Thick Black (Power Negative) /Thick Red (Power Positive)
Motor: Thick Yellow (Motor Negative) /Thick Blue (Motor Positive)
Ignition Switch: Thin Red (VCC)/Thin Blue
Indicator: Thin red (Indicator power output) /thin black (indicator negative)
Brake: thin yellow (Brake signal)/thin black (Negative Power)
Speed governor: Thin blue(Speed handlebar Signal input) /Thin black (Negative Power) /thin red(5V Positive Power)
Charge Port: Thin red (charge input power Positive) /thin black (Power negative)
Brake Light: Thin red (power Positive) /thin black (Power negative)
Sport: Thin yellow /thin green

ALL WIRINGS/PATHS USED IN OUR E BIKE FOLLOWS:
9AWG,
12AWG,
16AWG,
18AWG.
@ 2KW,6KW,10KW.


Advantages:
  • Lower Maintenance and longer lifetime - no brush and commutator erosion
  • Lower noise - the elimination of brush contact
  • Higher power to weight ratio
  • Higher efficiency (in general higher than 90%)
  • Lower temperature rise - more efficient heat dissipation due to winding construction
  • Simple structure
  • Higher speed range- no limit of brushes and commutator.
EMERGENCY KILL SWITCH DATA SHEET:
·        PEAK VOLTAGE TOLERANCE:  600V @ 5A,
                                                          240V @ 10A.

·        HALOGEN LAMP DATASHEET:

·        Specs: 100/90W @ 12V
·        Dual lined lamp for high and low beam applications.




Friday, 28 February 2020



Team blizzards                 

Team Blizzards was the research and development team in lovely professional university, This was the student organization in which they develop the electrical vehicles mostly they manufacture the electric-vehicles and electric-karts, not they manufacturing the electric vehicles they new innovative ideas

The upcoming model of team blizzards 








this was the upcoming model for the new events and with the new design with a fresh look with more compatibilities and high performance 
present models 














This was the 3D model which was made in the 3D-software, this is one of the models in which they have made the four of them in different models using different parameters, this is the fourth model and these four models are  built according to parameters of rule books that were made by the electric vehicles organizers and this are built  like normal bikes which was used in our regular bases, and they are different organizations throughout India


This one of the picture after the development of the bike, this bike can run up to 115km  in a single charge and which can maintain the speed of 70km/ph in which they have used 1KW motor with 48V,60ams battery

































DESIGN GOALS With a limited amount of power, the focus is primarily on the power to weight ratio of the vehicle. The only means to impr...