I.K.E Infrared Keyless EntryTeam MembersTeam ResponsibilitiesProblem StatementKey ComponentsDesign RequirementsFunctionalityUnique Signal KeyingEffective RangePowerPhysical PackagingPhysical CharacteristicsAffordabilitySummaryI.K.EInfrared Keyless Entry EE 4512 Senior Design Department of Electrical and Computer Engineering April 10, 2001Preliminary Design ReviewTeam MembersKenny Reynolds – Team LeaderMembers AdvisorAdria D. Jones Ray Smith Dr. Ray WintonTeam ResponsibilitiesProblem StatementRadio Frequency Keyless Entry (RFKE) does not provide flexible interaction between automobiles and external communication devices. SolutionInfrared Keyless Entry (I.K.E) will provide a flexible way of remote entry as well as allow communication with devices containing infrared IrDa compliant ports.Key Components Optical Signal Transmitter Optical Signal ReceiverAmplification Decode Micro- Controller Specified FunctionDesign RequirementsFunctionalityUnique Key SignalingEffective RangePowerPhysical PackagingPhysical AttributesPhysical CharacteristicsAffordabilityFunctionality The receiver unit will be able to lock and unlock doors of vehicles with preinstalled power door locks. The receiver unit will also posses the capability of providing other functionality, such as lowering windows.Unique Signal KeyingUnique Signal Keying helps to ensure the system is not compromised. This will be obtained by encrypting the transmission signal and decrypting the signal at the receiver unit. The receiver has to be compliant with Version 1.1 of the IrDA specifications so it may receive infrared signals from third-party communication devices.Effective RangeIt will only be necessary for IKE to be able to operated no less than 20 feet under normal daylight conditions. Communication with third party devices will be limited to two meters due to the requirements of infrared data communication.PowerPower to the receiver will be provided by the automobile’s battery. The operating range will be 10 to 15 VDC and consume no more than 100 mA of current.The transmitter operate on a standard 9 V battery and consume no more than 100 mA of current.Additional current drops will be required from the automobile during locking and unlocking doors.Physical PackagingThe IR receiver unit will be packaged in a box no larger than 5’’ by 5’’ by 2’’. It will contain all components necessary for decryption of the signal and interface with the proper wiring of the vehicle for locking and unlocking the doors.The transmitter unit will be encompassed in a box no larger than 2” by 3” by 0.75’’, small enough to be placed on a key chain with the ignition key while in operation with the car.Physical CharacteristicsThe system must be durable enough to withstand the ruggedness of vehicle travel and user mobility.AffordabilityThe transmitter and receiver units will be packaged and be sold less than $50.00.SummaryInfrared technology will be used to provide a flexible medium between an automobile and communication devices by allowing the use of IrDA compliant transmissions and reception of infrared
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