打开 MDF 文件

通过指定目标文件的名称来打开 MDF 文件。有关该文件的许多基本详细信息已提供。此示例文件是使用 Vector CANape 创建的。

m = mdf("CANapeBasic.MF4")

m =

MDF with properties:

File Details

Name: 'CANapeBasic.MF4'

Path: '\\central-mi\home\michellw\Documents\MATLAB\Examples\vnt-ex51113426\CANapeBasic.MF4'

Author: 'Otmar Schneider'

Department: 'PMC @ Vector Informatik GmbH'

Project: 'Demo'

Subject: 'XCPSim'

Comment: 'Example file created with Vector CANape'

Version: '4.10'

DataSize: 176545

InitialTimestamp: 2016-04-21 14:27:17.000010630

Creator Details

ProgramIdentifier: 'MCD14.02'

Creator: [1×1 struct]

File Contents

Attachment: [0×1 struct]

ChannelNames: {2×1 cell}

ChannelGroup: [1×2 struct]

查看文件创建详细信息

Creator 属性提供了有关创建该 MDF 文件的工具的信息。

m.Creator

ans =

struct with fields:

VendorName: 'Vector Informatik GmbH'

ToolName: 'CANape'

ToolVersion: '14.0.20.2386'

UserName: 'visosr'

Comment: 'created'

查看通道组详细信息

MDF 文件中的数据存储在通道组中包含的通道中。此示例文件包含两个通道组。

m.ChannelGroup(1)

m.ChannelGroup(2)

ans =

struct with fields:

AcquisitionName: '10 ms'

Comment: '10 ms'

NumSamples: 1993

DataSize: 153461

Sorted: 1

Channel: [74×1 struct]

ans =

struct with fields:

AcquisitionName: '100ms'

Comment: '100ms'

NumSamples: 199

DataSize: 23084

Sorted: 1

Channel: [46×1 struct]

查看通道详细信息

通道组内存储了每个通道的详细信息。

m.ChannelGroup(1).Channel(1)

ans =

struct with fields:

Name: 'Counter_B4'

DisplayName: ''

ExtendedNamePrefix: 'XCPsim'

Description: 'Single bit demo signal (bit from a byte shifting)'

Comment: 'Single bit demo signal (bit from a byte shifting)'

Unit: ''

Type: FixedLength

DataType: IntegerUnsignedLittleEndian

NumBits: 1

ComponentType: None

CompositionType: None

快速访问通道名称

通过 ChannelNames 属性，可以快速访问以查找各个通道组中的特定通道。

m.ChannelNames

m.ChannelNames{1}

ans =

2×1 cell array

{74×1 cell}

{46×1 cell}

ans =

74×1 cell array

{'Counter_B4' }

{'Counter_B5' }

{'Counter_B6' }

{'Counter_B7' }

{'PWM' }

{'PWM_Level' }

{'PWMFiltered' }

{'Triangle' }

{'map1_8_8_uc_measure[0][0]'}

{'map1_8_8_uc_measure[0][1]'}

{'map1_8_8_uc_measure[0][2]'}

{'map1_8_8_uc_measure[0][3]'}

{'map1_8_8_uc_measure[0][4]'}

{'map1_8_8_uc_measure[0][5]'}

{'map1_8_8_uc_measure[0][6]'}

{'map1_8_8_uc_measure[0][7]'}

{'map1_8_8_uc_measure[1][0]'}

{'map1_8_8_uc_measure[1][1]'}

{'map1_8_8_uc_measure[1][2]'}

{'map1_8_8_uc_measure[1][3]'}

{'map1_8_8_uc_measure[1][4]'}

{'map1_8_8_uc_measure[1][5]'}

{'map1_8_8_uc_measure[1][6]'}

{'map1_8_8_uc_measure[1][7]'}

{'map1_8_8_uc_measure[2][0]'}

{'map1_8_8_uc_measure[2][1]'}

{'map1_8_8_uc_measure[2][2]'}

{'map1_8_8_uc_measure[2][3]'}

{'map1_8_8_uc_measure[2][4]'}

{'map1_8_8_uc_measure[2][5]'}

{'map1_8_8_uc_measure[2][6]'}

{'map1_8_8_uc_measure[2][7]'}

{'map1_8_8_uc_measure[3][0]'}

{'map1_8_8_uc_measure[3][1]'}

{'map1_8_8_uc_measure[3][2]'}

{'map1_8_8_uc_measure[3][3]'}

{'map1_8_8_uc_measure[3][4]'}

{'map1_8_8_uc_measure[3][5]'}

{'map1_8_8_uc_measure[3][6]'}

{'map1_8_8_uc_measure[3][7]'}

{'map1_8_8_uc_measure[4][0]'}

{'map1_8_8_uc_measure[4][1]'}

{'map1_8_8_uc_measure[4][2]'}

{'map1_8_8_uc_measure[4][3]'}

{'map1_8_8_uc_measure[4][4]'}

{'map1_8_8_uc_measure[4][5]'}

{'map1_8_8_uc_measure[4][6]'}

{'map1_8_8_uc_measure[4][7]'}

{'map1_8_8_uc_measure[5][0]'}

{'map1_8_8_uc_measure[5][1]'}

{'map1_8_8_uc_measure[5][2]'}

{'map1_8_8_uc_measure[5][3]'}

{'map1_8_8_uc_measure[5][4]'}

{'map1_8_8_uc_measure[5][5]'}

{'map1_8_8_uc_measure[5][6]'}

{'map1_8_8_uc_measure[5][7]'}

{'map1_8_8_uc_measure[6][0]'}

{'map1_8_8_uc_measure[6][1]'}

{'map1_8_8_uc_measure[6][2]'}

{'map1_8_8_uc_measure[6][3]'}

{'map1_8_8_uc_measure[6][4]'}

{'map1_8_8_uc_measure[6][5]'}

{'map1_8_8_uc_measure[6][6]'}

{'map1_8_8_uc_measure[6][7]'}

{'map1_8_8_uc_measure[7][0]'}

{'map1_8_8_uc_measure[7][1]'}

{'map1_8_8_uc_measure[7][2]'}

{'map1_8_8_uc_measure[7][3]'}

{'map1_8_8_uc_measure[7][4]'}

{'map1_8_8_uc_measure[7][5]'}

{'map1_8_8_uc_measure[7][6]'}

{'map1_8_8_uc_measure[7][7]'}

{'map1_8_8_uc_measure' }

{'t' }

在 MDF 文件中查找通道

channelList 函数可用于快速轻松地在 MDF 文件中查询通道详细信息。它默认返回与提供的输入部分匹配(不区分大小写)的通道，但它也可以返回完全匹配的通道。

channelList(m, "PWM")

channelList(m, "PWM", "ExactMatch", true)

ans =

3×9 table

ChannelName ChannelGroupNumber ChannelGroupNumSamples ChannelGroupAcquisitionName ChannelGroupComment ChannelDisplayName ChannelUnit ChannelComment ChannelDescription

_____________ __________________ ______________________ ___________________________ ___________________ __________________ ___________ ______________________________________________ ________________________________________________

"PWM" 1 1993 10 ms 10 ms "" Pulse width signal from PWM_level and Triangle "Pulse width signal from PWM_level and Triangle"

"PWM_Level" 1 1993 10 ms 10 ms "" ""

"PWMFiltered" 1 1993 10 ms 10 ms "" Low pass filtered PWM signal "Low pass filtered PWM signal"

ans =

1×9 table

ChannelName ChannelGroupNumber ChannelGroupNumSamples ChannelGroupAcquisitionName ChannelGroupComment ChannelDisplayName ChannelUnit ChannelComment ChannelDescription

___________ __________________ ______________________ ___________________________ ___________________ __________________ ___________ ______________________________________________ ________________________________________________

"PWM" 1 1993 10 ms 10 ms "" Pulse width signal from PWM_level and Triangle "Pulse width signal from PWM_level and Triangle"