VIVOTEK
158 - User's Manual
Applications > Shock detection
The camera comes with a shock accelerometer. The shock sensor can detect impacts to the
camera. For example, when a person deliberately tries to destroy the camera, the camera can
report the event to the administrator.
Normally, a 5kgm impact can cause the detected impact level to surge to 50% on the scale.
Configure the Alarm Level to a preferred percentage on the chart. Click the
Enable shock
detector
checkbox and click
Save
to complete the configuration.
Shock Level
You should then go to Event settings to configure the shock detection as a triggering source.
See page 132 for Event configuration.
The measurement range of the sensor is ±16G.
For every one G force (g = 9.8 m/s²) perceived, the sensor acquires a reading of 512.
The value acquired by a 2 G acceleration will look like the following:
512 * 2 /16 = 64
Suppose that all 3-axis readings are equal (for simplicity reasons only), the shock level shown
on the Shock detection chart will be (64 + 64 +64 ) *100 /1024 = 18.75.
