Mobileye AWS-2000, Техническое руководство по установке, Страница: 50 / 67

AWS-4000
Technical Installation Guide
Mobileye Technologies Ltd.
Proprietary and Confidential
Page 50
Appendix B Signal level Adjustment
Tips
This appendix explains the required electrical modifications in case one
or more of the extracted signals is too weak (under 3 V at high level).
B.1 Amplifying a weak car signal
The following table summarizes electrical system requirements with
respect to vehicle signals:
Item Description Value
Signals Cable Car inputs
Speed, Left, Right, Brake, Wipers and
Headlights car signals
Voltage Input 12 - 24VDC
Signal Values
*
On and Off voltage levels
27V > High ("1”) > 3.60V
0V ≤ Low (“0”) < 1.00V
Sometimes the vehicle signal is too weak and amplifying it will bring it
to the expected voltage level.
To amplify it, here is a possible solution:
B.2 Decreasing a high signal (bias)
In case the car signal voltages are too high, for example:
Possible solution: add an 11V Zener Diode to the signal line.