| 摘要 |
<p>PURPOSE:To provide a rader alarm circuit which can set up an alarm area by specifying its center position and size. CONSTITUTION:An alarm gate information is sent to CPU 7 by specifiedly inputting a center position and a size into an alarm gate input device 8, and CPU 7 generates an alarm gate signal from a distance signal generated inside CPU 7, an antenna angle signal sent from an antenna, and the alarm gate information by an operation, and sends the alarm gate signal to an alarm area generating circuit 10, which generates an alarm area signal to draw an alarm area from the alarm gate signal and sends it to an alarm judging circuit 3. A rader target signal turned into a digital signal is inputted from a rader device into an alarm judge circuit 3, which judges whether a target position is inside or outside the alarm area, and sends the above judge signal to CPU 7. CPU 7 sends an alarm signal to a buzzer circuit 9 according to the setting up of an alarm mode (approach alarm or breakaway alarm).</p> |
