SU760146A1 - Multipoint indication device - Google Patents

Description

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• The device belongs to the field of automatic signaling and can be used in multi-point signaling schemes, where the registration of monitored parameters is carried out by secondary devices equipped with multipoint signaling nodes with both separate and common parameter tasks.

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A signaling device is known that contains signaling cells connected in parallel to a power source, each of which is made from a sensor contact, one output of which is connected to the positive pole of the power supply, and the other is connected to the connection point of one of the outputs of the signal lamp and a capacitor bounded by a resistor, sequentially, with which the diode is connected, the thyristor cathode and other terminals of signal lamps are combined and connected to the negative pole of the power source, the thyristor anode is connected to cut in series connected the alarm reset switch and the buzzer to the positive pole of the power source, the thyristor control electrode is connected. 30

..to a common junction of resistors and ’capacitors

The closest technical solution to this invention is a device for multipoint signaling, containing signaling cells, in each of which the anode of the first thyristor is connected to the positive power supply bus through the first signal lamp, the first voltage divider made on two resistors, one end of the first one connected to the negative power supply bus; the anode of the second thyristor through the third resistor connected to the positive bus power supply; the cathodes of the first and second thyristors with dinienes with a negative power supply busbar, thyristor anodes are interconnected through a capacitor, the fourth and fifth resistors form the second divider • filled with multipoint, and its moving contacts are connected to the corresponding contacts of the second switch 3

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a reader intended for the general "" task parameter, a movable contact

which through the key, which is the contact of the actuator is connected to the positive power supply bus, the control electrodes of the first and second thyristors are connected to the middle points of the first and second dividers respectively, the negative bus of the power supply is connected to one of the fixed contacts of the switch through the second signal lamp the contact of which through series-connected diodes, the sixth and seventh resistors are connected to the negative bus power supply, one p IG Petritskaya contact of this switch is connected to the positive supply rail, the other - with the movable contact multipoint signaling switch and the stationary switch contact, between. The power supply buses include a circuit of a series-connected signaling device, a handshake button and a thyristor, the control electrode to which is connected to the common point of the sixth and seventh resistors. [X | ..

The disadvantage of this device is the lack of reliability due to the inefficient use of components, as well as the relatively large time required to monitor the health of the device with a large number of controlled points.

The aim of the invention is to improve the reliability of the device.

This goal is achieved due to the fact that a second alarm lamp, a third thyristor and resistors are inserted into each alarm cell, a second alarm lamp is connected between the anode of the second thyristor and another power supply bus, common points of the first thyristor and signal lamp and the second signal lamp and thyristor through the contacts of the first switch and the capacitor with the anode of the third thyristor, which through the fifth resistor is connected to another power bus, the cathode itself, and the control electrode through the sixth resistor Inen with a single bus power supply and directly with another fixed contact of the second switch, the movable contact of which through serially connected * third resistor and key is connected to another power supply bus, which through serially connected seventh resistor, button and the corresponding diode connected to control electrodes of the first and second thyristors and one fixed contact of the second switch, which is connected to another movable contact of the switch of the common signaling cell.

The device is monitored by applying voltage from

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positive bus power supply through the test button, the sixth resistor and the diodes of the element OR to the control electrodes of the main thyristors. ...

The drawing shows a schematic diagram of the alarm device for the case of collaboration with two twelve-point devices equipped with multipoint alarm with a common parameter task.

The device contains signaling signaling cells, each of which consists of a thyristor 1, a signal lamp 2 and a resistor 3, a diode 4, a switch 5, which is made multi-point for connecting the signal-. . use of a secondary device, switch 6, which is intended for the general task of the parameter, switch 7, which is the contact of the actuator, element, resistor 8, additional thyristor 9, resistors 10 and 11 ₍ , capacitor 12, switch 13, which is intended for temporary removal of the sound indication, ^ element OR 14, signal lamps 1.5, thyristor 16, resistor 17, signaling device 18, acknowledgment button 19, buttons ₍ 20, resistors 21.

The device works as follows. ''.

. In case of violation of the controlled parameter, the contacts of the switch '6 of the general task of the parameter are closed. At the moment of closing the contacts 7 of the actuator, the voltage from the positive source of the power source through the resistor 8, which limits the current in the circuit, is simultaneously applied to the moving contact of the switch 5 and then to the control electrox. the main thyristor 1, which opens, and the signal lamp 2 located in its anode circuit, lights up through the closed contacts of the switch 13, the diode of the element OR 14 to the control electrode of the thyristor 16. The thyristor opens and the buzzer 18 located in its anode circuit sounds violation of the controlled parameter. A sound signal is removed by the handshake button 19.

When thyristors 1 and 9 are closed, capacitor 12 is discharged. When the thyristor 1 is opened, the capacitor '12 starts charging along the following circuit: positive power supply bus, resistor 10, moving contact of switch 5, thyristor anode 1, open thyristor, negative power supply bus'. Negative polarity - at the anode of the thyristor 1, plus - at the anode of the thyristor 9.

Since the time of violation of the monitored parameter may exceed the time of one full turn of the switch 5, it is possible to temporarily remove the sound indicator

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katsii using the switch 13, disconnecting the control circuit of the thyristor 16. The second group of contacts of this switch turns on the alarm lamp 15, indicating a temporary disconnection of the audio 5 display.

After the restoration of the normal, monitored parameter mode, the switch 13 is reset to its original state. The light indication is reset automatically.

after the restoration of the normal mode of the monitored parameter. When this movable contact switch 6 is switched to a different position, and. when the actuator 7 is closed, the direction from the positive bus of the power source through the limiting resistor 8 is applied to the control electrode of the thyristor 9, which opens, connecting the positively charged capacitor 12 to the negative busbar. nickname power. This leads to the fact that a negative voltage is applied to the anode of the thyristor 1, and this leads to an immediate shutdown of the thyristor 1 and the signal lamp 2 goes out.

Monitoring the health of the alarm lamps and the entire device is carried out by applying voltage from the positive power supply bus when pressing button 20, resistor 21, diodes 4 to thyristor control electrodes 1) Resistors 3, 11 and 17 in the control electrode circuits of thyristors 1.9 and 16 bypass the section the control electrode — the cathode in the circuits for increasing the thyristor immunity.

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From the description of the device it can be seen that compared to the prototype, with the same number of controlled points, the proposed device contains a significantly smaller number of elements, which ultimately increases the operational reliability of the device, reduces its cost and size.

Claims (1)

Claim 55 A device for multipoint signaling, containing signaling cells, in each of which a circuit and 60 are connected to the power supply busbars 6 The first alarm lamp and the first thyristor, the control electrode of which is connected through the first resistor with one power supply bus and through the contacts of the first switch to the corresponding one fixed contact of the second switch, the cathode of the second thyristor directly, and the control electrode through the second resistor connected to one power supply bus, the third resistor, the capacitor, the third switch, in the common cell of the alarm system, a power supply circuit is connected to a power supply circuit from a series of acknowledgment buttons of the thyristor signaling device, the control electrode of which, through the fourth resistor, is connected to one power bus and to the OR element, which is connected via a switch to the circuits of signal lamps connected to one power bus, one movable contacts of the Switch are connected to another power bus, Moreover, in order to increase the reliability of the device, a second signaling lamp, a third thyristor and resistors are inserted into each signaling cell, a second signaling lamp is connected between the anode of the second thyristor, etc. The power bus, common points of the first thyristor And the signal lamp and the second signal lamp and the thyristor are connected through the contacts of the first switch and the capacitor to the anode of the third thyristor, which is connected to the other power line through the fifth resistor, the cathode is directly connected to one power supply bus and directly with another fixed contact of the second switch, the movable contact of which through series connected third resistor and key is connected to the other power bus, which serially connected through the seventh resistor, the diode and the corresponding button is connected to the control electrodes of the first and second thyristors and one fixed contact of the second switch, which is connected to the other movable contact switch total cell signaling. .