41
Impact duration
100ms
1~4999
The formula of calculating the acceleration of impact (collision) event is as follow.
abs(X)
＋
abs(Y)
＋
abs(Z)*Filter.
“abs(X)”, “abs(Y)” and “abs(Z)” are the data from the X, Y and Z axes of acceleration sensors in the
vehicle. Filter is the coefficient from the Z axis of acceleration sensor.
Filter rate of Z axis
Sensitivity level
Filter rate
0
100%
1
80%
2
60%
3
40%
4
20%
5
0%
Table 1.3 Acceleration Sensitivity level and value from Z axis for collision detection (Default level: 0)
E.g.: Threshold: 1200 mg; Interval: 100ms
1) Setting value: 5
Detection condition: abs(X)
＋
abs(Y)
＋
abs(Z)
≧
1200mg
2) Setting value: 4
Detection condition: abs(X)
＋
abs(Y)
＋
abs(Z)×0.8
≧
1200mg
3) Setting value: 3
Detection condition: abs(X)
＋
abs(Y)
＋
abs(Z)×0.6
≧
1200mg
4) Setting value: 2
Detection condition: abs(X)
＋
abs(Y)
＋
abs(Z)×0.4
≧
1200mg
5) Setting value: 1
Detection condition: abs(X)
＋
abs(Y)
＋
abs(Z)×0.2
≧
1200mg
6) Setting value: 0
Detection condition: abs(X)
＋
abs(Y)
≧
1200mg
The default values are detected as follow.
(1) If the vehicle accelerates continuously in the positive direction of X axis and if the real-time
value of Acce exceeds the threshold continuously for 100ms during driving, then the DEVICE will
trigger an alarm of Acceleration.
(2) If the vehicle decelerates continuously (brakes suddenly) in the positive direction of X axis and
if the real-time value of Dece exceeds the threshold continuously for 100ms during driving, then the
DEVICE will trigger an alarm of Deceleration.
(3) If the vehicle quickly turns to the positive direction of Y axis and if the real-time value of
Trun_Acce exceeds the threshold continuously for 100ms during driving, then DEVICE will trigger
an alarm of Trun_Acce.
(4) If the vehicle quickly turns to the opposite direction of Y axis and if the real-time value of
Trun_Acce exceeds the threshold continuously for 100ms during driving, then DEVICE will trigger
Summary of Contents for SW004SSD
Page 9: ...6 4 Wiring Diagram ...
Page 27: ...24 Character Switching Introduction ...
Page 53: ...50 9 9 Mirror ON Mirror function on OFF Mirror function off ...
Page 74: ...71 Step 3 When Update success is shown on the display the device will reboot automatically ...
Page 79: ...76 11 10 System Info System Info Software version number ...
