SU760147A1 - Multipoint indication device - Google Patents

Description

The invention relates to avtoma.ticheskogo alarm and is intended for the implementation of light and sound indications of emergency deviations of monitored parameters detected by sensors-signaling devices.

A device for signaling changes in monitored parameters, providing alarm. with repeated action of the sound signal containing the sound source, the sound source control relay, the sound signal removal equipment, the closing contacts of the sensor alarms, the receiving relays, the winding pins of which are connected to common connection points of their own disconnecting contacts and the shorting contacts of the sensor alarms, diodes, signal lamps, one output of each of which is connected to the common connection point of the closing and opening contacts of the receiving relay, and the other to the power source oia, and equipment for testing the source of the audio signal and warning lamps [1].

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The closest to the proposed is a device for multi-point alarm, containing a source of audio signal, included in the circuit of the closing contact relay

control and, according to the number of control points, make contacts of sensors, receiving relays, the windings of which are connected to the connection points of the first own opening contacts and closing contacts of sensors, signal lamps, one output of each signal lamp is connected to a point

15 of the connection of the closing and second actually opening contacts of the receiving relay, and the other to the One power supply bus [2 ^].

Disadvantage of this device

20 is its complexity, due to the presence of a source of flashing light and a number of common additional contact groups, as well as an increase in the load on the closing contacts of the datapixes of signaling devices due to the continuous connection of signal lamps to them, which adversely affects their service life, especially when using low-power contact groups of sensor alarms ..

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The purpose of the invention is to simplify and improve the reliability of the device for multipoint signaling.

For this purpose, in the device, the second 'own disconnecting contact of the receiving relay is connected to the point of connection of the closing contacts of the sensors and the winding of the receiving relay, and the closing contact of the receiving relay is connected via a disconnecting contact of the control relay to another power supply bus.

The drawing shows a diagram of the device in two controlled parameters.

The device contains a sound signal source 1, a control relay 2 with closing contact 3 and opening contact 4, closing contacts 5 and 6 of the sensors, windings 7 and 8 receiving relays, respectively, with the first own opening contacts 9 and 10, the second own opening contacts 11 and 12 and closing contacts 13 and 14 of the receiving relay, signal lamps 15 and 16, connected on the other hand to the bus 17 of the power source.

The opening contacts 9 and 10 are connected in series with the cathodes of the diodes 18 and 19, the anodes of which are connected to the common connection point of the control relay winding 2 and the test buttons 20 for sound source 1 and warning lights 15 and 16 connected to the bus on the other side.

21 power sources.

The second terminals of the windings 7 and 8 of the receiving relays are connected to their own closing contacts 22 and 23 and to the cathodes of the diodes 24 and 25, the anodes of which are connected to the button 26 for disconnecting the sound source.

The device works as follows.

When closing, for example, the contact of the sensor 5 (the emergency deviation of the parameter monitored by it) is energized to the winding of the relay 2 of the control circuit. The control relay 2 is turned on and its closed closing contact 3 creates a source circuit of the audio signal supply 1. At the same time, contact 4 of control relay 2 is opened.

Simultaneously, when the contact of sensor 5 is closed, the signal lamp 15 of this monitored parameter turns on.

The operator, having heard the sound signal and having decoded it by the flashing signal lamp 15, presses the button 26. This turns on the power supply of the winding 7 of the receiving relay.

With the inclusion of the winding 7 of the relay closes its closing contacts 13 and

22, and the opening contacts 9 and 11 open. With contact closure 22

a blocking power circuit is created

winding relay 7, through which the winding of the relay receives power and when you release the button 26.

The opening of contact 9 leads to de-energizing the winding of the control relay 2 and to the subsequent disconnection of the source 1 of the sound signal. With the opening of the power supply circuit of the winding of the relay 2 control, its opening contacts 4 will close. The audible alarm will stop. The lamp 15 will lose power through the open contact 11, however, will remain in the on state, receiving power through the power supply bus circuit 21, the trip contact 4 of the control relay 2, the closing contact 13 of the receiving relay 7, the lamp 15, the power supply bus 17.

This ends the process of monitoring the emergency deviation of the first parameter. The lamp 15 will remain on as long as there is an alarm condition of this parameter, in which relay 7 is in the on state.

The monitoring of the emergency deviation of a new parameter in the presence of an emergency condition of a previously monitored parameter is ensured as follows.

In case of emergency deviation of the new parameter, the closing contact b of the sensor controlling the state of this parameter will close. Similarly to the above, the control relay 2 is turned on, the audio signal source 1 and the lamp 16. However, the lamp 15 will turn off due to the interruption of its power supply circuit by the contact 4 of the control relay 2.

The operator is easy to set the alarm deviation of the new parameter. Then, as before, it turns on Button 26, which leads to switching on relay 8, which by its disconnecting contact 10 breaks the power supply circuit of control relay 2, which in turn de-energizes the power supply circuit of sound source 1 and turns on its contact 4. With the activation contact 4 lamp 15 lights up again (in the presence of the alarm state of the monitored parameter).

When parameters are restored to normal conditions, contacts 5 and b of the sensor alarms are opened, and lamps 15 and 16 are turned off. Thus, when turning on the signal lamp of the new parometmeter, the device switches off the warning lamps, previously monitored alarm parameters, for the time required for on-line detection A new alarm parameter with their subsequent switching on simultaneously with the siren disconnection.

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The invention advantageously distinguishes this device from the known ones, since it provides for simplifying the design of the device by eliminating a special unit designed to separate the signal lamp of the emergency parameter from previously monitored parameters, as well as by eliminating a number of contact groups located in common circuits control the operation of the alarm device. The reliability of the device is increased, which is very important for critical objects that provide for the use of devices for alarm signaling of monitored parameters, and the service life of the contact groups of the sensor alarms is increased, since due to the disconnection of the power supply circuit of signal lamps, their contact load decreases. sensor alarms.

Claims (1)

Claim A device for multipoint alarm, containing an audio signal source, included in the circuit of the closing contact of the control relay, and, by the number of control points, closing contacts of the sensors, receiving relays, the windings of which are connected to the connection points of the first own disconnecting contacts and shorting contacts of the sensors, 5 signal lamps, one output of each signal lamp is connected to the connection point of the closing and second own disconnecting contacts of the receiving relay, and the other to one ΙΟ power supply bus, about aphid Feeling that, in order to simplify and increase the reliability of the device, it has a second own disconnecting contact of the receiving relay connected to the connection point 15 closing contacts of the sensors and the winding of the receiving relay, and the closing contact of the receiving relay through the disconnecting contact of the control relay are connected to another bus of the power source.