Purpose. For simplified use of sensors for switching on lighting.
Scope. In everyday life and at industrial enterprises.
Advantages. The advantage of the device is the ability to reuse (double) individual components (modules).
Description. The main goal of the first stage is to maximize the use of their functionality. In this case, it was decided to use the Crow SRPG device. It is a combined sensor that simultaneously operates as a motion sensor and acts as a glass break detector. As a motion detector, the device monitors the situation in the controlled area in the IR range using a dual PIR element. Collection and focusing of information on the sensor is carried out by a spherical Fresnel lens with a diffraction mirror to cover the potential “dead” zone under the sensor. At the second stage, the implementation of the timer was selected. The circuit based on NE555 was taken as a basis.