SU1656570A1 - Signaling device - Google Patents

Abstract

The invention is carried out to the C technician (a deployment and can be used to signal an unauthorized impact on a monitored object. The purpose of the invention is to increase the functional reliability of the device. The purpose of the invention is achieved by the fact that the device containing sensors, pulse generator, sound and light alarms, power supply, two keys, handshake button and isolating diode, a delay element and a current-limiting resistor are inserted. When the sensor circuit is extended, the sensor circuit unlocks with a second key and activates a pulse generator that supplies one or a series of pulses of increased amplitude to the sensor circuit. If the resistance increases due to oxidation or contact knowledge, then when exposed to high pulses, the amplitudes formed on the contacts of the film are destroyed and the conductivity of the sensor circuit is restored B. The key is locked and the device goes into standby mode. If the sensor is triggered when an unauthorized impact on the monitored object occurs over time The detected delay element turns on the buzzer With the acknowledge button, the buzzer is turned off and the warning light 1 is turned on.

Description

The invention relates to signaling and can be used to signal unauthorized exposure of a controlled object.

The aim of the invention is to increase the functional reliability of the device.

The drawing shows a functional diagram of the proposed device.

The device contains sensors 1.1-1.0, power source 2, 3 pulse generator, buzzer 4, warning lamp 5, delay element 6, keys 7 and 8. Acknowledgment button 9, isolating diode 10 and current limiting resistor 11 Pulse generator 3 can be performed in the form of a pulse generator 12, the output of which includes a step-up transformer 13 whose output is the output of a pulse generator 3. The key 7 can be performed on the transistor 14 and the resistor 15.

The device works as follows

In the standby mode, the key 8 is low potential, coming to its second output through the decoupling diode 10 and the closed contacts of the sensors 1.1-1.

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lives in a locked state. When the resistance of the circuit is increased by the sensor 1.1-t.n, the key 8 is unlocked and supplies power to the input of the delay element 6 and to the first power input of the generator 3 pulses. The pulse generator 3 generates a pulse (or a series of pulses) with an amplitude sufficient to destroy the oxide film or contaminated on the contacts of the sensors 1.1-1.p. Due to the electric disruption of the contamination film or oxide film, the conductivity of the sensor circuit 1.1-1. P is restored, the key 8 is locked and the voltage from the delay element 6 and the pulse generator 3 is removed, which prevents the formation of a signal at the output of the delay element 6.

If the 1.1-1.p sensor circuit breaks due to the opening of one of the contacts of these sensors during unauthorized operations with a controlled object, then the pulses from the generator output of the 3 pulses will not lead to the restoration of the conductivity of their circuit. Therefore, after the delay time of the signal by the delay element 6, the signal from its output opens the key 7, which triggers the buzzer 4. The operator by means of the acknowledge button 9 turns off the buzzer 4 and turns on the signal light 5.

Thus, in the proposed device, self-healing is provided, which prevents

the formation of a false signal and increases the functional reliability of the device.

Claims (1)

Invention Formula A signaling device comprising sensors, a power source, the first terminal of which is connected to the first terminals of the first sensor and a warning lamp, the first power input of the pulse generator and the first terminal of the first key, the second output of which is connected to the first output of the sound alarm, the second terminal of the power source connected to the first terminals of the handshake button and the second key, the second terminal of which is connected to the anode of the decoupling diode, characterized in that, in order to increase the functional reliability devices, a delay element and a current limiting resistor are inserted into it, the sensors are made with an open contact and are connected in series, the third output of the second key is connected to the input of the delay element and the second power output of the pulse generator, the output of which is connected to the cathode the output diode and to the second output of the last sensor, the output of the delay element is connected to the third output of the first key, the second output of the buzzer is connected to the second output of the button acknowledged and, the third output of which is connected to the second output of the light signaling device.  10 W