Popular car DVR usually has the function of incorporating the sensor movement. However, this is not the same motion sensor, which is built on the basis of pirodatchika, a programmer, which responds not to human movement, and to change the image. And, unfortunately, it is triggered only when a significant portion of the image is changed. In the automotive operation of this is enough, but if the DVR is used as an addition to the security system, a programme motion sensor is ineffective. Here you need a motion sensor based on pirodatchika.
Now available for sale pirodatchiki SEN0018 type for security systems. It is a small module that feeds voltage 5V, and when moving the person issuing the logic at its output. If you recall that most car video recorders have the same mode and its figurative remote control, when the record is included in the 5V voltage from the charger on and off, with the completion of the creation of the Bani file After disabling this voltage, it turns out simple scheme shown in the figure here. The scheme is really quite simple. Trimpot, who is on the Board of the motion sensor, you need to install the greatest exposure time, that DVR included more time.
When human movement in the area of sensor F1 on off unit appears (at the time, set the trimpot of its Board). This opens the transistor VT1 and delivers voltage 5V on the Registrar's video input for connecting the charger. DVR is switched on for the recording.
The power source can be any DC power supply with an output of 5V and shock not below 0.5 a. Is quite suitable charger with USB connector for your cell phone.
Author: Sagitov P. A.
