Design Specifications for Engineering Project

Design Specifications for Engineering ProjectIntroductionFor large ontogeny projects, defining the problem becomes the development of traffic pattern specifications. Typically, development project are complex, involving a number of people from different disciplines working toward the same goal. This chapter discusses the following topic that describe the process and the importance of developing design specificationSpecifications of a Design General Description Specification of Material lot Simulation Specification Cost Specification 3.1. Specifications of a Design Specifications are nothing more than a formal document listing the requirements of a project. The opinion of the project is to energy harvesting through flooring, which is built with piezo voltaic technology, the electrical energy created by the weight of human being foot steps walking around from place to place, which is caught by floor piezoelectric sensors and get compressed and decompressed, then energy is stored a nd use as a power source. The figure (x) here represent the structure of the energy harvesting design in the form of blocks.3.2. General Description The source has tried to evaluate when a full amount of weight is sensed by the piezoelectric sensors mounted on a platform, and the emfs which generated leave alone be stored in the Battery. The Battery which is charged, further connected to the Mobile Charging Circuit board as appliances. Board consists a USB point, where users may connect cables to charge a mobile ring from the battery charged.The arrangement also consists a 12-volt power supply adapter with voltage regulator, which will provide to the monitoring enlistment based on a micro entertainler to monitor the rig voltage which generated across the sensors utilize potential divider physics. The level of a voltage generated and whenever human walks through platform the count of the footsteps is to be recorded and displayed on the LCD. directs require DC supply to operat e. A string of LEDs is mounted down the stairs the platform (floor) when the voltage generated by the weight of human footsteps the LEDs will be blink through the microcontroller circuit.Consequently, the voltage which generated using energy harvesting plait piezoelectric Power Generation System is commode be utilised within different appliances mobile charging, street or corridor lighting, bus or airports station lighting, nightclubs, rural areas, charging technologies for electric vehicles, etc. The more power could be generated using the equivalent technique researchers are investigating in piezoelectricity for bigger designs.3.3. Specification of MaterialThe minimum requirements of materials to build an energy harvesting device is illustrated belowStatement Of MaterialComponent NamesignificanceQuantityResistors 10K52.2K1100K1330K210K POT.1Capacitors10 uF/63V233 PF2470 uF/35V1Integrated CircuitsATMEGA 328178052IC Bases8-PIN1Transistor BC 547 (NPN)1DiodesIN40072Bridge Diode2Mis cellaneousPiezoelectric Sensor8 crystal 16MHz1LCD 16-21Burge Strip 16 Pin-male1LED Strip1RED LED32-Pin Push Button1USB CONNECTOR1PCB CONNECTOR 2-Pin1Weighing Machine Plate112 Volt transcriber1USB Wire1Lead Acid Rechargeable Battery 12 VoltPrinted Circuit BoardSoldering WireConnecting Wire3.4. Circuit Simulation Specification The figure (x), show the schematic diagram for Piezoelectric Power Generation System Utilizing of Human Footsteps. The schematic diagram is constructed through circuit simulation software Proteus Design Suite, which is an Electronic Design Automation tool including schematic capture and PCB layout modules. circuit simulators allow the circuit designer to drop back a circuit schematic and simulate circuit operation on a personal computer. Circuit simulators provide a very quick and behind way to evaluate a particular design concept without using expensive test equipment or having to procure parts and assemble a breadboard.The components short justifications o f the system are specified below and more in details will found in the further chapter.Resistor (R)The circuit diagram of the device has 10 resistors and that having different values which 10K, 2.2K, 100K, 330K, and 10K POT. The requirement of this resistor in the circuit is to create specified values of the flow and voltage. So, its used to oppose an electric current by producing a voltage drop between its terminals in proportion to the current.Capacitor (C)The function of the capacitor is to store power in form of an electric field and is called as a ceramic disc with some features like high stability. The circuit of a device has been provided with five capacitors with a value of 10 uF/63V, 33 PF, and 470 uF/35V. And to operate the crystal its specified oftenness capacitor is used in circuits.TransistorsA transistor is a device which is used to make a change in large output with respect to the small input applied to it. In a circuit, 3 terminals BJT (bipolar junction transistor ) is used. By the use of the transistor, control large signal at another pair by just applying small input at another pair. Also, it can be used as a switch with the help of small input current as it is a current control device.IC-RegulatorIC is an integrated circuit used in various applications. In timing device product used 7805 IC as a 5v voltage regulator. Sometimes there is a voltage wavering and so it could not get fixed output voltage. So this 7805 IC provides regulated power supply. The main advantage of this IC is to give constant output voltage even there is a variation in input. Also, current limiting protection is provided in IC itself and for other parts of the circuit as well.Crystal OscillatorsCrystal Oscillator is a device that used in electrical circuits in order to create an electrical signal with an accurate frequency. The need for the frequency of the circuit is to keep the path of the time in quartz and provide a stable signal for the device.Seven Segments Displ aySeven segments display (LCD) is a device that utilized for displaying the status of the circuit. The features of the seven segments display are that it operates in low current. The display will show the status of the device Level of the voltage generated, and whenever human walks through platform the count of the footsteps is recorded and displayed.Piezoelectric SensorsPiezoelectric Sensors also a device, utilize to generate the electrical energy converting different sources. (E.g. Kinetic, mechanised energy). When a force is applied on a piezo material, a charge is generated. These devices consist an 8 Piezoelectric Sensors which mounted below the platform and convert the human footstep energy into electrical energy.3.5. Cost Specification This section is one of the most important section and often that is overlooked. This section determines the potential for the financial triumph of the project. when considering all the technical details, its easy to overlook that the cost of development and the manufacturing cost are crucial to the project success. As such, they must be identified as part of the specification in a compact statement.After research of components required to harvesting the Piezoelectric Power Generation System Utilizing of Human Footsteps, it is judge to fall within the 90 budget. With research the specifications required for the key component excluding postage. Equipment that will be required within the budget includes Resistor (R), Capacitor (C), Transistors, IC-Regulator, Crystal Oscillators, Seven Segments Display and Piezoelectric Sensors. However, these are all relatively low cost. Facilities required to develop the project including software are available at no costs for the schematic circuit design.SummaryHaving terminated the design specification, let us note what has been accomplished and the steps that achieve those accomplishments. The following steps can be used as guideline for completing the design specification in any pro jectDivide the design problem into smaller modules. complete a block diagram.Do research on area relating to each design problem. gather more information.Develop a cost budget.Apply fictive thinkingComplete a schematic design.The blank pieces of paper at the beginning of the chapter now have many schematic symbols with their associated circuit traces. The next step involves the selection of the physical components and breadboarding.