Wavetronix SMARTSENSOR 105 Manual do Utilizador descarregar pdf (Página 13)



Page 12



RTMS speed data. The two SmartSensors’ speed data are similar and realistic, but the RTMS

data was significantly different, which was high for close lanes and low for lanes further away

(Table 5).

Table 5. Sensor Speed Data (mph)

Date Lane SS 105 SS HD RTMS SS HD S.M. SS 105 S.M.

9/5/2008

NB 1 62 58 72 - -

NB 2 63 60 54 - -

NB 3 65 64 57 - -

SB 1 65 60 40 - -

SB 2 63 61 43 - -

SB 3 65 65 45 - -

9/18/2008

NB 1 62 59 73 - -

NB 2 57 61 58 - -

NB 3 61 65 57 - -

SB 1 62 59 42 - -

SB 2 60 60 44 - -

SB 3 64 66 46 - -

10/1/2008

NB 1 62 58 71 - -

NB 2 58 60 56 - -

NB 3 60 64 57 - -

SB 1 64 60 41 - -

SB 2 60 61 45 - -

SB 3 63 65 46 - -

10/16/2008

NB 1 62 - 72 61 -

NB 2 60 - 55 61 -

NB 3 64 - 53 65 -

SB 1 62 - 40 60 -

SB 2 60 - 42 60 -

SB 3 64 - 45 64 -

10/14/2008

NB 1 63 - - - 65

NB 2 62 - - - 61

NB 3 63 - - - 60

SB 1 63 - - - 62

SB 2 61 - - - 61

SB 3 65 - - - 61

Note: S.M. refers to the sign-mounted configuration

Vehicle Classification

Since each sensor had different classification capabilities, and the SmartSensor 105 only had

the capability to classify 3 classes of vehicles, it was decided to group the classification into 3

major length bins: small (0-20 ft), medium (0-55 ft), and large (>55 ft). The classification aspect

of the data collection is the major limitation of each radar-based sensor. The SmartSensor 105,

was by far the least accurate of the three sensors. The SmartSensor 105 under-counted the

small vehicles and over-counted the medium and large vehicles (Table 6). The SmartSensor

HD slightly under-counted the small vehicles and slightly over-counted the large vehicles, while

over-counting the medium vehicles. The RTMS undercounted the small vehicles and over-

counted both the medium and large vehicles. The SmartSensor HD was consistently more

accurate than the other two, especially in classifying small vehicles.

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 26 27

Comentários a estes Manuais

Sem comentários

Wavetronix SMARTSENSOR 105 Manual do Utilizador Página 13

Comentários a estes Manuais