SU997021A1 - Signalling pneumatic device - Google Patents

Description

The invention relates to automation devices and is intended for signaling the limit value of parameters of a technological object. Pneumatic signaling devices are known that contain circuit cells, by the number of monitored parameters, a buzzer and an acknowledgment button. However, such devices do not allow to isolate a new parameter that has been turned off. how the indicators of all parameters that go beyond the specified limits work. The closest to the invention according to the technical nature is the signaling device, which contains signal shaping modules by the number of input channels, each of which contains AND, OR, BAN and an acknowledgment button, an acoustic alarm and a multiple input element OR 2. A well-known device to characterize with the complexity of its scheme, since each module of the formation of the signal contains three elements BAN, an element AND, an element OR, and there is also a multi-pass element OR. The aim of the invention is to reduce hardware costs. This goal is achieved by the fact that in the well-known pneumatic signaling device, which contains signal conditioning modules according to the number of input channels, each of which has logic elements and an indicator, a power channel, an acknowledgment button and an audible alarm, each signal conditioning module contains three three-membrane relays backwater, with the normally open nozzles of the first and third relays, switched on by the self-blocking circuit, connected to the input channel and to the positive chamber of the second relay, the output of the first the second relay is connected to the minus chamber of the second relay, the output of the third relay is connected to the indicator, the acknowledge button is connected to the shutdown cameras of the first relays of all cells, the normally closed nozzles of all the second relays are connected to the power channel, and their cameras are connected to each other all cell relay, with buzzer and through serially connected

normally open nozzles of the second relay - with the atmosphere.

The drawing shows a diagram of the device.

The device consists of signal generation modules 1, the number of which is equal to the number of input channels 2 i from the sensor-monitors of monitored parameters, the acknowledgment button 3 and the audible alarm 4 (sensors-signaling sensors in drawing i are not shown). Each module 1 contains the first 5, second 6 and the third 7 three-membrane relays with a backpressure spring, as well as indicator 8,

Input channel 2 is connected to the normally open nozzles of the first 5 and third 7 relays connected in a self-locking scheme, and with the positive camera of the second relay b, the output of relay 5 is connected to the minus camera of relay b, the acknowledge button 3 is connected to the shutdown cameras of all relays 5, outputs all the second relays b and the shut-off cameras of the third relays 7 are connected between the collector, with the sound-signaling device 4 and through the normally open nozzles of the relay 6 connected in series with the atmosphere.

The device works as follows

In the initial state, the output signal of the button 3 is equal to the signals on the input channels 2 are equal to 0, all indicators 8 are off.

When you exit from the norm, for example, a parameter monitored by the first module 1, channel 2 receives a signal P, which triggers relay 7, indicator 8 and relay 6,. The output signal of the relay b, equal, triggers the buzzer 4 and simultaneously enters the shutdown chamber of the relay 7 of other modules. If any other parameter goes out of the norm, the relay 7 and, accordingly, the indicator 8 of the other cell cannot switch,

Thus, when the output of the norm of several parameters, indicator 8 is turned on, corresponding to the parameter that was rejected first.

When the acknowledgment button 3 is pressed, the O signal is sent to the shut-off cameras of all the relays 5. In this case, the relays 5, which correspond to the deviated parameters, operate, the output signal of the relay 6 becomes equal to O

and the relay 7 and the indicators 8 of the modules of all deviating parameters are triggered, the buzzer 4 turns off,

The effectiveness of the invention is determined by reducing the cost of its manufacture by reducing the number of elements.

Claims (1)

Invention Formula A pneumatic device, alarms 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, and an audible alarm, characterized in that, in order to reduce hardware costs, The 5th module of the Singshov formation contains three three-membrane relays with a back-up spring, with the normally open nozzles of the first and third relays ,. included in the self-blocking scheme 0, connected to the input channel. and with the positive camera of the second relay, the output of the first relay is connected to the negative camera of the second relay, the output of the third relay is connected to the indicator, 5 Acknowledgment button is connected to the cameras, the first relays of all cells are disconnected, the normally closed solenoids of all the second relays are connected to the power channel, and their cameras are connected between On the other hand, from the chamber switch of the third relay of all cells, with the audible signal and through the nozzles of the second relay connected in series but open to the second, with the atmosphere. Information sources. taken into account in the examination 1 Pneumoautomatic, 4 ,, Science, 1972, p., 50, rice, 2, 2, USSR Author's Certificate No. 401414, class, G O D 7/00, 1973 (prototype), ItIll .g Iv "" ° th