Henan Lehai Water World
Now security inspection equipment has become an indispensable security inspection equipment in our daily life. Ansa brand security inspection gates are NO.1 in China. Ansa security inspection manufacturers specialize in the development and development of security inspection gates, metal exploration gates, metal security inspection gates, and metal exploration security inspection gates. This is our common sense of security inspection on "Principle of Security Gate Operation".
Security Gate Principle
With power-on self-test function, convenient fault protection; digital signal control is used for module use and various settings, and precise level control can be completed through programming; data encryption, rehabilitation and query can be performed, and data management is convenient.
Originally, the security gate was a sine wave of 3.5-4.95M generated by a crystal oscillator. The sine wave was divided by a frequency divider to 7.6K. After the power was amplified by the triode and the coil, it was input into the large coil of the door panel for electromagnetic wave emission. The district coils are accepted separately. After acceptance, the received signal is compared with the reference signal. After the change is found, the output level of the capture card is changed. The CPU scans the data of the 6 capture cards within 280 milliseconds to determine the location of the metal location And the output appears.
Security gate structure
1.Door panel structure: large coil, small coil, compensation coil and graphite;
Security Gate Exploration Process
CPU exploration → one group of infrared is blocked → check whether the data of each acquisition card can be changed → alarm → check another group of infrared → reset from scratch