Presentation on theme: "Group 12 Stanley Andrews Brandon Jefferson"— Presentation transcript:
1 Group 12 Stanley Andrews Brandon Jefferson The Can CrusherGroup 12Stanley AndrewsBrandon Jefferson
2 MotivationWanted to incorporate more electrical and software design into the idea of the “Can Crusher”Use pneumatic cylinders (3 pneumatic cylinders in this project)Thought it would be something different from previous senior design projects
3 ObjectivesStep 1: Can or water bottle is placed into the trash can. Can/Water bottle enters hopper and waits for it to be identified by the optical and reflective sensor.Step 2: Double acting cylinder pushes the object and sends it to the can crusher .Step 3: Sorter determines route of the object based on feedback from the sensors.Step 4: If object is a water bottle, it will be routed towards a push cylinder and crushedStep 5: If the object is an aluminum can, it will be routed towards a push cylinder and crushedStep 6: Push cylinder crushes the aluminum cans and water bottles and sends remains to the storage binStep 7: Process continues until storage sensor alerts operator that storage bin is % filled.Step 8: Once storage reaches 90%. Can crusher goes into “Stop” mode. Items from storage bin, can then be removed.
4 Features Fully automatic Can Crusher and Sorter Detect when an object is placed in the hopperBe able to distinguish between an aluminum can and a water bottleSort the water bottle into a separate storage bin from the aluminum cansDetect when the storage bins are 90% fullWill have three different modes “Standby”, “Operational (Go)”, “Stop”
6 Hopper Where the bottle and cans will be placed Be able to hold 8 FL oz. water bottle and 12oz. aluminum cansTwo sensors are mounted to detect the object inside the hopperNeed to change size of water bottles. Originally we were planning to use 16.9 fl oz but it didn’t fit our mechanical design
8 Parallax Ultrasonic Sensor Part a) Sensor is sending a ultrasonic pulse but object is outside of operating distancePart b) Sensor facing object at a angle. Pulse is reflected at another anglePart c) Sensor is facing object on level plane but object is too small. Will not reflect transmitted signalUsing the Ultrasonic sensor as a detector and also as distance operator
9 Parallax Ultrasonic Sensor PING Ultrasonic SensorDetector TypeUltrasonicDimensions16 x 46 x 22(mm)Peaking Operating distance2(cm)-3 (m)Supply Current30 mAVoltage5 V
10 Reflective Optical Sensor TCRT5000 Reflective Optical SensorDetector typePhototransistorDimensions10.2 x 5.8 x 7(mm)Peak operating distance2.5 mmOutput current1 mAEmitter Wavelength950 nmVoltage5 VBanner SM2A312LVDetector TypeRetro-reflectiveDimensions66 x 12.2 x 30.7 (mm)Peak operating distance50mm – 2mOutput currentMinimum of 5 mAVoltageV ACBanner SM2A312LV cost 45$ has a much further peak operating distance than the TCRT5000. TCRT5000 cost about 10$ for 10 of them. Only concern is getting the TCRT5000 close enough to the object. We placed the TCRT5000 where the object would fall directly on top of it. So getting close enough to the object wouldn’t be a problem
11 Reflective Optical Sensor Get the best results (peak operating distance) at 2.5 mmOne of the challenges will be to get it close enough to the object stored in the “hopper”
13 Terms of Service We ask that all contents are empty All objects must be placed horizontally in the hopperBy default system will be in “standby mode”, once an object is placed inside, the system will go into operational modeIf storage bin is full no objects will be crushed.
14 Design Overview Hopper Sensors Pneumatic cylinder Can Crusher Sorter Storage binWhat is the fail safe we have? Water bottles get crushed also right? Or are they identical?
15 Sorter The idea is called the “Swinging lid” Uses a pneumatic cylinder to be able to “swing” the lid and alter the objects pathRoutes Aluminum Cans to proper binRoutes Water bottles to proper binWhich bin Is to what? Will the right most bin be for bottles and left most bin be for cans?
16 Motors/ Air Compressor Electric motorsAir CompressorProsUses Standard OutletOption to convert AC to DCVery Compact and small to maneuver and place anywhereConsMost motors only have one speedNo way to speed up or slow down the projectVery Expenses for high power motorsProsUses a Standard OutletAble to adjust the air pressureAbility to control the speed of the motor by the PSIOption to convert AC to DCNot to expensive economy for the budgetCan use air solenoid valves that can control of a multiple operated air pressure componentsConsTank will have to be refilled when low on airWill need multiple air hosesVery big hard and to hide and maneuverVery loud when filling up the tank
17 Air Compressor Horsepower (HP) 0.33 HP Tank Capacity (Gallons) 2.0 Gal Tank TypePortableVoltage120 VAmps (Amps)2.0 APrice$99.99
18 Air Compressor DeWalt Horsepower (HP) 1.6 HP Tank Capacity (Gallons) Tank TypePortableVoltage120 VAmps (Amps)15.0 AMax Pressure200 PSIPriceFree
19 Pneumatic cylinders Two Mini cylinder Double Acting Cylinder (can crusher)All will be operated via 3 solenoids . All connected to the microcontroller
24 Air Solenoid Type: 2 Position 5 way Voltage: 12V DC Power 2.5W Current .208 AmpsValve Fittings:1/8" BSPT (British standard pipe tapered)Total Needed3Price$ (each)
25 Micro Controller Solenoids connected to 3 digital pins ( 8, 9, 10 ATMega 328pOperating Voltage5 VInput Voltage (recommended)7-12 VInput Voltage (limits)6-20 VDigital I/O Pins14Analog Input Pins6DC Current per I/O40 mADC Current for 3.3V Pin50 mAFlash Memory32 KBClock Speed16Solenoids connected to 3 digital pins ( 8, 9, 10Ultrasonic Sensor & TCRT5000 connected to 4 analog pins (A0, A2, A3, A4)LEDS connected to 3 digital pins (5-7)
37 ProgressionWhere do we stand? How much more research, testing, ordering of parts, completion of project? How far are we from being done? We’re almost done ordering all our sensors and sensors
38 Issues TCRT5000 Software Design Water bottles Ultrasonic Sensor Ambient light affecting the read out of the TCRT5000Manipulating the microcontroller to distinguish between a water bottle and aluminum canWater bottles not crushingPlacement of how the object falls into the hopper affected if it was detected or notTCRT5000Software DesignWater bottlesUltrasonic SensorAmbient light seemed to be an issue we did not expect. Ambient light affects what the sensor will read which in turn affect the coding. We needed to manipulate the code for the readout to determine if it was a can or bottle. Software was trouble but we were able to figure it out.