SECURITY ALARM AND ALARM LOOP VERIFICATION METHOD AND SYSTEM Russian patent published in 2025 - IPC G08B13/22 G08B29/00 

FIELD: security alarm.

SUBSTANCE: group of inventions relates to security alarm equipment and specifically to a method and system for checking working capacity of a security alarm and alarm loop. Method of security alarm and alarm loop verification is carried out with respect to security system, in which the power contacts and the relay contacts of the security alarm are connected to the reception-control device by means of an alarm loop. Said alarm loop is provided with a first control resistor which is connected in series to relay contacts of the alarm detector, and a second control resistor which is connected in parallel to the first control resistor and relay contacts of the alarm detector. At that, method of verification consists in fact that voltage is supplied to power terminals of security alarm, wherein if the alarm device is operational, then its relay contacts are closed in the presence of voltage on its power contacts and its relay contacts are open in the absence of voltage on its power contacts. According to the invention, the method includes the following steps: transferring a controllable switch available in the reception-control device to a test mode, in which voltage is not supplied to the power contacts of the security alarm; after that, checking the security alarm and the alarm loop on the reception-control device operability by checking the resistance value in the alarm loop, wherein if the resistance value in the alarm loop is equal to the total resistance of the first and second test resistors, then the alarm device or the alarm loop are inoperable.

EFFECT: high reliability of security alarm.

3 cl, 2 dwg