이 페이지는 기계 번역을 사용하여 번역되었습니다. 영어 원문을 보려면 여기를 클릭하십시오.
MDF 파일 시작하기
이 예제는 MDF 파일과 그 내용에 대한 정보에 액세스하는 방법을 보여줍니다.
파일 세부 정보 보기
파일 이름을 지정하여 mdfInfo를 사용하여 MDF 파일의 메타데이터를 확인합니다. 이 샘플 파일은 MATLAB®에서 Vehicle Network Toolbox™를 사용하여 생성되었습니다.
fileInfo = mdfInfo("VehicleData.mf4")fileInfo =
MDFInfo with properties:
File Details
Name: "VehicleData.mf4"
Path: "/tmp/Bdoc25b_2988451_1428583/tpf364ba40/vnt-ex51113426/VehicleData.mf4"
Author: "Engineer"
Department: "Automotive"
Project: "Demo"
Subject: "Prototype"
Comment: "Example file"
Version: "4.20"
InitialTimestamp: 2024-11-14 19:16:35.000000000
Creator Details
ProgramIdentifier: "MATLAB"
CreatorVendorName: "The MathWorks, Inc."
CreatorToolName: "MATLAB"
CreatorToolVersion: "25.1.0.2768609 (R2025a) Prerelease"
CreatorUserName: "engineer"
CreatorComment: "Created with Vehicle Network Toolbox"
File Contents
Attachment: [1×7 table]
ChannelGroupCount: 2
Event: [0×8 eventtable]
MDF 파일의 기본 정보는 File Details 섹션의 속성으로 확인할 수 있습니다.
원본 툴에 대한 정보는 Creator Details 섹션에서 확인할 수 있습니다.
연결 파일, 채널 그룹 및 이벤트에 대한 세부 정보는 File Contents 섹션에 기재되어 있습니다.
채널 그룹 세부 정보 보기
MDF 파일의 데이터는 채널 그룹 내의 채널로 구성됩니다. 이 샘플 파일에는 ChannelGroupCount 속성에서 표시되듯이 두 개의 채널 그룹이 포함되어 있습니다.
fileInfo.ChannelGroupCount
ans = uint64
2
mdfChannelGroupInfo를 사용하여 두 채널에 대한 세부 정보를 확인합니다.
chanGrpInfo = mdfChannelGroupInfo("VehicleData.mf4")chanGrpInfo=2×13 table
GroupNumber AcquisitionName Comment NumSamples DataSize Sorted SourceName SourcePath SourceComment SourceType SourceBusType SourceBusChannelNumber SourceSimulated
___________ _______________ ___________________________________________________________________________ __________ ________ ______ ___________ ___________ _____________ ___________ _____________ ______________________ _______________
1 <undefined> Simulation of an automatic transmission controller during passing maneuver. 751 43558 true <undefined> <undefined> <undefined> Unspecified Unspecified 0 false
2 <undefined> Simulation of engine gas dynamics. 92033 2208792 true <undefined> <undefined> <undefined> Unspecified Unspecified 0 false
채널 정보 보기
mdfChannelInfo를 사용하여 이 MDF 파일의 모든 채널에 대한 세부 정보를 확인합니다.
chanInfoDefault = mdfChannelInfo("VehicleData.mf4")chanInfoDefault=12×13 table
Name GroupNumber GroupNumSamples GroupAcquisitionName GroupComment GroupSourceName GroupSourcePath DisplayName Unit Comment ExtendedNamePrefix SourceName SourcePath
_________________ ___________ _______________ ____________________ ___________________________________________________________________________ _______________ _______________ ___________ ___________ ___________ __________________ ___________ ___________
"AirFlow" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" g/s <undefined> <undefined> <undefined> <undefined>
"Brake" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined>
"EngineRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined>
"FuelRate" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" g/s <undefined> <undefined> <undefined> <undefined>
"Gear" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" <undefined> <undefined> <undefined> <undefined> <undefined>
"ImpellerTorque" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined>
"OutputTorque" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined>
"Throttle" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" % <undefined> <undefined> <undefined> <undefined>
"TransmissionRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined>
"VehicleSpeed" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" mph <undefined> <undefined> <undefined> <undefined>
"time" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" s <undefined> <undefined> <undefined> <undefined>
"time" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" s <undefined> <undefined> <undefined> <undefined>
기본적으로 이 함수는 최소한의 채널 메타데이터를 반환합니다. 추가 메타데이터를 보려면 AdditionalMetadata 옵션을 true로 설정하십시오.
chanInfoAdditional = mdfChannelInfo("VehicleData.mf4", AdditionalMetadata=true)chanInfoAdditional=12×25 table
Name GroupNumber GroupNumSamples GroupAcquisitionName GroupComment GroupSourceName GroupSourcePath DisplayName Unit Comment ExtendedNamePrefix SourceName SourcePath Type SyncType DataType NumBits ComponentType CompositionType ConversionType SourceComment SourceType SourceBusType SourceBusChannelNumber SourceSimulated
_________________ ___________ _______________ ____________________ ___________________________________________________________________________ _______________ _______________ ___________ ___________ ___________ __________________ ___________ ___________ ___________ ________ ___________________________ _______ _____________ _______________ ______________ _____________ ___________ _____________ ______________________ _______________
"AirFlow" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" g/s <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"Brake" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined> FixedLength None IntegerUnsignedLittleEndian 8 None None Unspecified "" Unspecified Unspecified 0 false
"EngineRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"FuelRate" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" g/s <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"Gear" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" <undefined> <undefined> <undefined> <undefined> <undefined> FixedLength None IntegerUnsignedLittleEndian 8 None None Unspecified "" Unspecified Unspecified 0 false
"ImpellerTorque" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"OutputTorque" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" ft*lbf <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"Throttle" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" % <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"TransmissionRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"VehicleSpeed" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" mph <undefined> <undefined> <undefined> <undefined> FixedLength None RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"time" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" s <undefined> <undefined> <undefined> <undefined> Master Time RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
"time" 2 92033 <undefined> Simulation of engine gas dynamics. <undefined> <undefined> "" s <undefined> <undefined> <undefined> <undefined> Master Time RealLittleEndian 64 None None Unspecified "" Unspecified Unspecified 0 false
MDF 파일에서 채널 찾기
mdfChannelInfo는 이름이 완전히 또는 부분적으로 알려진 경우 MDF 파일 내 채널의 세부 정보를 쿼리할 수도 있습니다. 이 함수는 문자열 매칭을 위해 와일드카드를 지원하는 Channel 옵션을 제공합니다.
이름이 정확히 "Gear"인 채널을 찾으려면:
pwmChanInfoExact = mdfChannelInfo("VehicleData.mf4", Channel="Gear")
pwmChanInfoExact=1×13 table
Name GroupNumber GroupNumSamples GroupAcquisitionName GroupComment GroupSourceName GroupSourcePath DisplayName Unit Comment ExtendedNamePrefix SourceName SourcePath
______ ___________ _______________ ____________________ ___________________________________________________________________________ _______________ _______________ ___________ ___________ ___________ __________________ ___________ ___________
"Gear" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" <undefined> <undefined> <undefined> <undefined> <undefined>
이름에 "RPM"이라는 부분 문자열이 포함된 채널을 찾으려면:
pwmChanInfoWildcards = mdfChannelInfo("VehicleData.mf4", Channel="*RPM*")
pwmChanInfoWildcards=2×13 table
Name GroupNumber GroupNumSamples GroupAcquisitionName GroupComment GroupSourceName GroupSourcePath DisplayName Unit Comment ExtendedNamePrefix SourceName SourcePath
_________________ ___________ _______________ ____________________ ___________________________________________________________________________ _______________ _______________ ___________ ____ ___________ __________________ ___________ ___________
"EngineRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined>
"TransmissionRPM" 1 751 <undefined> Simulation of an automatic transmission controller during passing maneuver. <undefined> <undefined> "" rpm <undefined> <undefined> <undefined> <undefined>
