If you're going to custom car alarms,what do you need to pay attention to the custom car alarms?
Before you custom car alarms,you must konw the working principle of automobile alarm.The "brain" of many advanced alarm systems is actually a small computer. When the sensor is aware of the abnormal situation, the "brain" will close the switch, activate the alarm device (that is, the horn, car lights or alarm). Different security systems use different sensors, and sensor access controllers are also different.The controller and the alarm system are generally connected to the main battery of the vehicle, and the controller and the alarm system are usually equipped with a standby power supply.
Before you custom car alarms,you must konw the working principle of door sensor.Car alarm system is the most basic components of the door sensor. If someone opens the engine cover, the trunk or the door of the vehicle under full protection, the controller will trigger the alarm system.
Before you custom car alarms,you must konw the working principle of vibration sensor.The principle of vibration sensor is very simple: if someone hit, hit or moving your car, the sensor will send a signal to the controller, indicating the intensity of vibration. According to the seismic intensity, the controller will issue warning "beep" or comprehensive alarm.
Before you custom car alarms,you must konw the working principle of windows and pressure sensor.In many cases, theft crime rush, they have no time to break into the car, they will break the window. Equipped with a sound alarm system for cars, there is usually a device that can sense the damage.The microphone will measure the change of air pressure fluctuation, and change the pressure fluctuation to the current. The sound frequency of the broken glass is relatively unique (that is, the air pressure wave pattern is unique). The microphone can convert the audio to the current of the corresponding frequency and send it to the controller.In a line connected to the controller, the current flows through an inter - connected device which can only transmit the current in a certain frequency range.