Flatstream 特征值的结构 - Structure of the characteristic value Flatstream

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Flatstream 特征值的结构 - Structure of the characteristic value Flatstream

 

Each characteristic value transferred from the module via Flatstream has a length of 3 bytes with the high byte first. For the exact format, see Characteristic values. The stream has a total length of 240 bytes. First, all characteristic values from channel 1 are transferred, then those from channels 2, 3 and 4. The 32 frequency bands then follow next.

The RmsVelRaw and RmsVelEnvelope characteristic values and FrequencyBandxx are only transferred if they are set to a velocity signal and the EnableVelocityCalculation bit for the respective channel is set. Otherwise, 0 is output. EnableVelocityCalculation is configured in the SensorConfig register.

 

通过Flatstream从模块传输的每个特征值的长度为3个字节,其中高字节在前(高字节优先)。有关确切格式,请参见Characteristic values。 该流的总长度为240字节。首先,传输来自通道1的所有特征值,然后传输来自通道2、3和4的特征值,接下来是32个频带。

RmsVelRaw 和 RmsVelEnvelope 特征值和 FrequencyBandxx 只有在它们被设置为速度信号并且各自通道的 EnableVelculation 位被设置时才被传送,否则,将输出0。 EnableVelocityCalculation 是在 SensorConfig 寄存器中配置的。

 

Byte offset in the stream

流中的字节偏移量

Characteristic value

特征值

Channel 1

通道 1

Channel 2

通道 2

Channel 3

通道 3

Channel 4

通道 4

Channel parameters

通道参数

0

36

72

108

RmsAccRaw

3

39

75

111

RmsVelRaw

6

42

78

114

RmsAccEnvelope

9

45

81

117

RmsVelEnvelope

12

48

84

120

PeakHighFrequency

15

51

87

123

RmsHighFrequency

18

54

90

126

Iso10816

21

57

93

129

CrestFactorRaw

24

60

96

132

KurtosisRaw

27

63

99

135

PeakRaw

30

66

102

138

SkewnessRaw

33

69

105

141

RmsRaw

Frequency band 1 - 32

144

FrequencyBand01

:

:

237

FrequencyBand32