Instruments and Systems: Monitoring, Control, and Diagnostics Annotation << Back Automatic electronic anti-theft device E.A. RAGIMOV, O.M. SALAMOV, S.K. GEZALOV, This paper relates to the field of automation, in particular to guard devices intended to prevent the possibility of theft of cars and trucks. The task of the device is to allow the caretaker car without using the buzzer, simplifying design and electric circuit control system, increase reliability, as well as the suppression of low-frequency noise from the sensor signal. To achieve the objectives of the control system consists of intermediate (PRR) and the start (OL) relay. In this case, make contact OL entered the food chain the vehicle ignition system. PRR to the battery terminals (AB) is connected via contact vibration sensor signals (VDS) and the switch and PR – through the start key engine of the car and break contact BPD. VDS is made as a metal cup (MS), which is mounted vertically inside a cylindrical casing made of a noise eliminating, and a dielectric material at both ends provided with lids, which are also made of the noise eliminating, the dielectric material. Inside the MS has a small ball-shaped metal weight, made in the form of a pendulum and suspended by a thin wire of the contact element (FE) attached to the lid, and the other EC has a rigid connection to the bottom of the MS and the free end of it from the center of the bottom cover Output. The proposed electronic avtostorozh their work with the silent, that is its environmental benefit, Avtostorozh can be widely used to protect not only the cars, as well as large-capacity trucks, fumbling valuable products, especially along the lines of international perevozki.V paper discusses various options for electronic patrol and anti-theft devices and conducted a comparative analysis of the results expected from the use of these devices in cars. Include the advantages and disadvantages of each device individually. Of arrangements and principles of operation of the electronic anti-theft device, proposed by the authors of this article shall also indicate the advantages of the proposed watchdog Keywords: patrol and anti-theft devices, electronic relay, sensor guard, switch, transistor switch, inertia, contact and vibration sensors, saloon car, tirinistornoe control, LED, ignition system. Contacts: E-mail: oktay_dae@mail.ru Pp. 56-63.