Vivotek MD9560-DH, Руководство пользователя

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VIVOTEK
140 - 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 121 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.