SU533957A1 - Multipoint alarm device - Google Patents

Description

one

The invention is intended for use in technological installations for various purposes, in particular for light and sound alarms when closing the contacts of sensors installed in a co-controlled technological object.

A multipoint alarm device is known, which contains a set of sensors that are in the target of a lamia power supply, which is turned on only when the sensor contact is closed. However, it does not clear the memory of the light signal.

Of the known multipoint signaling devices, the most technically important is a device containing light alarm signaling terminals connected in parallel, each of which is designed as a process contact, a series-connected switch, a thyristor with the first resistor in its control circuit and a signal lamp, a warning lamp A short-circuiting kyoic connected at one end to the power source and the other to the first OR element made in the diodes attached to the signal lamps, and the second element OR.

The outline of this. The device provides light signaling with memory of the light signal regardless of the sensor state and sound signaling only from the contacts of the first signaling sensor. Removal of sound and light signals is possible when the power supply to the circuit is disconnected. In the future, receiving the sound signal from the contacts of the next sensor is possible only after the capacitor is discharged and the first sensor is restored to its initial state with the subsequent connection of the circuit power.

The purpose of the invention is to extend the functionality of the device, i.e., to provide both a CBOTOBOII and an audible alarm to any of the sensor contacts without disconnecting the whole circuit.

The goal is achieved by introducing a diode, a second closing button, and a second resistor in each cell of the light signaling system, sequentially connecting a second resistor, an additional thyristor with a third resistor in the control circuit, which is connected through a circuit breaker contact and source of nitan; The buzzer is connected to the output of the second element OR, the input of which is connected to each anode of an additional shooting gallery of the first, and the diode B; there is a circuit between the nepBoii loop and a button and one of the inputs of the second element OR.

In the drawing, the circuit diagram of the proposed multipoint alarm system is shown in principle.

The device contains an unlimited number of process contacts 1; power source 2; buzzer 3; the first lock button 4; the second closing button 5; switch 6 removal of the light signal; thyristor 7 to turn on the light signal; the first resistor 8 in the thyristor control circuit 7; signal lamp 9 light; howl alarm; second resistor 10 for isolating the power supply; additional thyristor 11 mute; a third resistor 12 IB for controlling the additional thyristor 11; the first element OR 13 (diode) to check the operation of the lamps; diode 14; the second element OR 15 to test the operation of the buzzer 3; a resistor 16 for limiting the current of the buzzer.

When the technological contact 1 of any sensor is closed, the thyristor 7 opens, the corresponding warning lamp 9 lights up and the power supply circuit of the audible alarm closes; "Power supply zero, technological contact 1, resistor 10, diode of the second element OR, resistor 16, buzzer 3.

To remove the sound signal (turn off the buzzer), briefly press the second locking button 5, thus forming an additional thyristor 11 opening circuit: "plus power supply, button 5, third resistor 12, additional thyristor 11, common point of the circuit (minus power source). The thyristor 11 is opened, and the "minus power source is fed" and the anode of the diode of the second element OR 15, which is locked and turns off the day of the buzzer 3. As a result, the beep disappears and the beeper circuit is again ready to receive the next signal from the process contacts 1. 11 remains open until the opening of the process contact 1 located in the power supply circuit of the additional thyristor 11.

By briefly pressing the closing button 4, two circuits for checking the operation of the circuit are created:

a) "plus the source of the litany, button 4, the diode of the first element OR 13, the signal lamp 9," minus the power source;

b) "plus power supply, button 4, diode 14, diode (Second element OR 15, resistor 16, buzzer 3, minus power supply.

On the first circuit, the signal lumina 9 are switched on, and on the second, the audible alarm 3 only for the time when button 4 is pressed.

When the switch 6 is briefly pressed, the power supply circuit of the signal lamps 9 is terminated through the thyristors 7, and the lamines go out. The proposed circuit design provides alternate audible signaling of an unlimited number of signaling sensors in any order of closing the contacts of these sensors, which allows to extend the possibilities of using the device.

Claims (1)

Invention Formula Multipoint alarm device, containing parallel. light signaling cells, each of which is made of an IB type of technological contact, which is subsequently turned on (a switch, a thyristor with the first resistor in its control circuit and signal lamp, the buzzer, the first closing button connected at one end to the power source and the other to the first OR element made on the diodes connected to the signal lamps, the second OR element, characterized in that in order to expand the functional the device’s capabilities, a diode, a second closing button, and a second resistor connected in series to each light signal cell, an additional thyristor with a third resistor in the control circuit, which is connected to it The second buzzer is connected to the output of the second OR element, the input of which is connected to each anode of the additional thyristor, and the diode is connected between the first closing button and one of the inputs of the second OR element. i -i