SU985775A1 - Pneumatic signalling device - Google Patents

Description

CS) PNEUMATIC ALARM DEVICE

one

The invention relates to pneumatic automation devices and is intended to signal the limiting value of parameters of a technological object.

A pneumatic signaling device is known, containing circuit cells according to the number of monitored parameters, a buzzer and an acknowledgment button Art.

However, this device does not permit the determination of the newly rejected parameters simultaneously with the previously rejected parameters.

The peculiarity of the circuit operation is the detection of a newly monitored monitored parameter: only the indicator of this parameter lights up, the indicators of other parameters that have previously gone out of the norm are lighted only after pressing the acknowledgment button.

Closest to the present invention, there is a pneumatic signaling device comprising signal shaping modules for the number of input channels, an acknowledgment button, a pulse generator, and a sound alarm C2.

However, the design of the device is complex, since each module of the forms, the signal world, contains four OR elements, one AND element, one

. BAN element and indicator.

The purpose of the invention is to reduce hardware costs.

This goal is achieved by

15 that in a pneumatic alarm device containing signal forming modules according to the number of input channels, each of which contains logic elements and an indicator, a power channel, an acknowledgment button, an audible alarm and a generator (pulse generator, in each module

signal generation, three three-membrane relays with a spring support are installed, the normally open nozzle of the first relay connected to the self-locking circuit, the positive camera of the second relay and the positive camera and normally open nozzle of the third relay are connected to the input channel, the output of the third relay is connected to the indicator, the output of the first relay connected to the negative cameras of the second and third relays, normally closed nozzles of all the second relays are connected to the power supply channel, and their cameras are connected to each other, to the inputs of the pulse generator and The jropa alarm and, through the normally open nozzles of the second relay connected in series, with the atmosphere, the acknowledge button is connected to the cameras to turn off all the first relays.

The drawing shows a diagram of the proposed device.

The device consists of signal generation modules 1, the number of which is equal to the number of input channels 2 from the sensor-detectors of monitored parameters (sensors-signaling devices are not shown), a confirmation button 3, a generator of k pulses, a sound alarm 5. Each module contains logic elements - the first 6 , second 7 and third relay 8, indicator 9.

The device works as follows

In the initial state, from button 3 the signal 1 is turned off in the cameras for turning off all the first relays L, all indicators 9 are off.

Suppose that the parameter monitored by the first module 1 has gone out of the norm. Channel 2 sends a signal 1, which causes the switching of relays 7 and 8, as a result of which the buzzer 5 and the pulse generator are switched on. The output signal of the latter will go through the normally closed nozzle of the relay 8 to the E indicator. If the confirmation button 3 is pressed, the signal O will be sent to the disconnecting cameras of all the relays, which will trigger the relay 6 of the first cell. Relay 6 output signal is 1,

This causes the switching of the relays .7 and 8. As a result, the pulse generator and buzzer 5 are turned off, and the indicator 9 lights up

an even light, since it will be connected to channel 2 via a loudly open relay nozzle 8. The appearance of a new deflected parameter will cause a similar triggering of the corresponding module 1.

The use of reteni reduces the cost of manufacturing a signaling device.

invention formula

A pneumatic signaling device containing signal shaping modules according to the number of input channels, each of which has logic elements and an indicator, a power channel, an acknowledgment button, an audible alarm and a pulse generator, characterized in that, in order to reduce hardware costs, each shaping module signals installed three three-membrane relays with a spring

backwater, with a normally open nozzle of the first relay switched on by the self-blocking scheme, a positive chamber of the second relay and a positive camera and a normally open nozzle of the third

the relay is connected to the input channel, the output of the third relay is connected to the indicator, the output of the first relay is connected to the Miius chambers of the second and third relays, normally closed

the nozzles of all the second relays are connected to the power supply channel, and their cameras are connected to each other, to the inputs of the pulse generator and the acoustic alarm, and through sequentially connected normally open nozzles the second turnips to the atmosphere, the acknowledge button is connected to the cameras to turn off all the first relays.

Sources of information € 1,

Accepted attention at examination. 1. USSR author's certificate If if6l4lt, cl. G 06 D 7/00, 1973.

2. Pneumatic automation. M., Science, 1972, p. 5b fig. k (prototype J,

Claims (1)

Claim A pneumatic alarm device containing signal generation modules according to the number of input channels, each of which has logic elements and an indicator, a power channel, an acknowledgment button, an audible signaling device and a pulse generator, which differs in that, in order to reduce the cost of expenses, in each signal generation module, three three-membrane relays are installed with a backup spring 30, and a normally open nozzle of the first relay, switched on according to the self-locking circuit, a plus camera of the second relay and a plus the measure and the normally open nozzle of the third ₃₅ relay are connected to the input channel, the output of the third relay is connected to the indicator, the output of the first relay is connected to the negative cameras of the second and third relays, the normally closed 40 nozzles of all second relays are connected to the power channel, and their cameras are interconnected , with the inputs of the pulse generator and the buzzer and through the normally connected nozzles of the second relays in series with the atmosphere, the acknowledgment button is connected to the shutdown chambers of all the first relays.