RU2278414C1 - Device for signaling about breakdown of controlled object - Google Patents

Abstract

FIELD: adjustment and control technologies, in particular, engineering of devices for controlling and signaling about breakdowns of controlled objects.

SUBSTANCE: result is achieved due to insertion, at each channel of object control, of module for automatic control of serviceability of indicator, made in a certain way.

EFFECT: increased reliability of signaling about breakdown of controlled object.

1 dwg

Description

The invention relates to devices for monitoring the state of an object.

A device for monitoring the state of an object by a.s. 461432, containing in each channel contact sensors connected to individual and common signal blocks.

There is also known a device for signaling a malfunction of a controlled object by AS 546918 (prototype), containing in each channel a contact sensor, a diode and an electromagnetic relay winding, the first opening contacts of which are connected to the signal element circuit, which decouples the diode, the second terminals of the electromagnetic relay windings and the anodes of the decoupling diodes of all channels are combined, the output electromagnetic relay the opening contact of which is included in the sound signal circuit in series with the second opening contacts of the electromagnet connected in parallel with each other total relays of each channel, the winding of the output electromagnetic relay is connected to the power supply via the acknowledgment button, the control button, while the winding of the output electromagnetic relay is connected to the power source through a diode connected in series, closing the electromagnetic relay contacts of each channel, in parallel with which a diode and a contact are connected sensor, the second terminals of the electromagnetic relays are connected to the power bus through the control button.

In a more general form, the device by A.S. 546918 is a device for signaling a malfunction of a monitored object, containing in each channel a sensor and an alarm block connected in series to the first output of the unit; an object malfunction signaling device, an audio signal device connected to the second output of the unit, and an acknowledgment button connected to the second input of the unit the signaling device is connected to the outputs of the signaling units of all channels through the OR logic element, and the outputs of the light signaling devices of the malfunction are of all channels are connected to the object's operability light through the inverse inputs of the summing logical element AND, while the signaling unit contains an input storage device, to the recording input of which a sensor output is connected, connected via the output through the logical element OR in parallel to the direct inputs of the logical elements AND sound and light alarm, the output of the AND element of the light alarm is connected through the intermittent signal forming element and the OR logic element to the light annunciator malfunction, the sensor output is connected to the other input of this OR element through the logical element AND of the signal acknowledgment, and the acknowledgment button is connected in the block to the recording input of the additional storage device and through the OR logical element in parallel with the output of the additional storage device, this button is connected to the reset input of the input storage device , to the direct input of the And acknowledgment element and to the inverse inputs of the And light and sound signal elements, and to the inverse reset input an additional th memory connected sensor output.

The disadvantage of the device as. 546918 is the lack of automatic monitoring of the health of the sensors during operation of the device.

Sensors that are part of the alarm device and monitor the state of the object are usually installed in the most inaccessible areas of the object and are the most vulnerable elements of the device. The lack of automatic monitoring of the health of sensors significantly reduces the reliability of the device. In this case, automatic monitoring of the health of the sensors should be performed in such a way that the attendants could not have a false impression of the triggering of the channel sensors, and should also take into account the various time constants of the sensors monitoring the same object (for example, when a fire alarm occurs sensors of temperature, flame, smoke, gas concentration, etc., having significantly different response inertia when monitoring their serviceability) should be used at the same time).

The purpose of the invention is to increase the reliability of monitoring the health of the object.

To this end, a device for signaling a malfunction of a monitored object in each channel contains a module for automatically monitoring the health of the sensor, consisting of an input storage device, an AND logic element, and an output storage device connected in series, as well as an output delay device connected to the output by an input input storage device, the output is connected in series through an additional logical element And and additional storage the device is connected to the light signaling device of the sensor malfunction, while the output of the input storage device is also connected to the inverse input of the blocking logic element AND, connected by the second direct input to the output of the sensor and the output to the recording input of the input storage device of the alarm unit, and through the OR element in parallel with the button manual control enable the output of the input storage device of the automatic control module is connected to the input of the sensor control, the output of the output storage device The device is connected to the light signaling device of the sensor operability, and in parallel with the output of the additional storage device, through the logic element OR, it is connected to the input reset input of the input storage device, while in the automatic control module the automatic control command channel is connected to the recording input of the input storage device and to the inverse input of the output reset storage device, to the second, direct, input of the first AND element and to the second, inverse, input of the additional AND element the output of the sensor is connected, the reset input of the additional storage device is connected to the acknowledgment button, and the output of the additional storage device is connected in the signaling unit to the output of the OR element in parallel with the output of the input memory of the signaling unit, and the time delay device time constant is greater than the sensor working time constant by the control command, and the time of switching on the command channel of the automatic control is longer than the device time constant for erzhki time at any of the modules of the automatic control device in all the channels.

The drawing shows a functional diagram of the device.

The source of information about the state of the controlled object are sensors 1, 2, 3.

The sensor 1, 2, 3 through the blocking logic elements AND 4, 5, 6 are connected to the blocks 7, 8, 9 of the alarm, to their inputs 7.1, 8.1 and 9.1, respectively.

The blocking elements And 4, 5, 6 block the signal output from the sensors 1, 2, 3 to the alarm blocks 7, 8, 9 when performing automatic monitoring of the health of sensors 1, 2, 3.

The output of the light alarm 7.2 of unit 7 is connected to the light signaling device 10 of the installation malfunction and to the inverse input of the summing logic element AND 11, to the output of which the light signaling device 12 of the installation is in good working order.

The sound alarm output 7.3 of block 7 is connected via an OR 13 logic element to a sound signaling device 14.

In the signaling unit, input 7.1 is connected to the recording input of the input storage device 7.4 and to the acknowledgment logic element AND 7.5. The signal from the output of the device 7.4 through the logical element OR 7.6 goes to the direct inputs of the logical elements And 7.7 light and And 7.8 sound signaling. The AND element 7.7 is connected through the intermittent signal forming element 7.9 and the OR logic element 7.10 to the output 7.2 of the light signaling unit 7.

The output of the element And 7.8 is connected to the output 7.3 of the sound signaling unit 7.

The acknowledgment button 15 is connected by its output 15.1 to the second input of block 7, to the recording input of the additional storage device 7.11, and in parallel with its output through the OR logic element 7.12, the button 15 is connected to the reset input of the input storage device 7.4, to the direct input of the AND element 7.5 and to inverse inputs of elements And 7.7 and 7.8.

The schemes of blocks 8 and 9 are similar to the scheme of block 7 and have outputs, respectively, to the light signaling devices 16 and 17 of the object's malfunction. The outputs 8.2 and 9.2 of blocks 8 and 9 are connected to the inverse inputs of the AND 11 element, and the outputs 8.3 and 9.3 are connected to the OR 13 element.

To monitor the health of the sensors in each channel included modules 18.19 and 20 automatic monitoring of the health of sensors 1, 2 and 3, respectively. An input channel 21 of the automatic control is connected to the input of the modules 18, 19, and 20.

The module 18 contains serially connected input storage device 18.1, logic element AND 18.2 and output memory device 18.3, as well as an output delay device 18.4 connected via additional logic element 18.5 and additional storage device 18.6 to the light signaling device 22 of sensor 1 health.

The output of the input storage device 18.1 of the module 18 is connected to the input of the device 18.3 time delay and through a logical element OR 23 in parallel with the button 24 manual control is connected to the control input of the sensor 1. The output of the device 18.1 is also connected to the inverse input of the blocking element And 4.

The output of the output storage device 18.3 is connected to the light signaling device 25 of the health of the sensor 1, and in parallel with the output of the additional storage device 18.6, the output of the device 18.3 is connected via the OR element 18.7 to the reset input of the input storage device 18.1.

The output of the additional storage device 18.6 in parallel with the signaling device 22 is connected by a channel 22.1 to the second input of the OR element 7.6 of the signaling unit 7.

An acknowledgment button 15 is connected to the reset input of the additional storage device 18.6 of the module 18 by the channel 15.1.

To the second, direct, input of the element And 18.2 and to the second, inverse, input of the element And 18.5 of module 18, channel 1.1 is connected from the output of sensor 1.

The time constant of the device 18.4 time delay is greater than the time constant necessary for testing sensor 1 by a command to monitor the health of the sensor.

The schemes of modules 19 and 20 are completely identical to the scheme of module 18.

In module 19, the output of the additional storage device, analogous to device 18.6 of module 18, is connected to the light signaling device 26 of sensor 2 malfunction and channel 26.1 to the signaling unit 8, to the input of the OR element, an analogue of the OR element 7.6 of block 7. Also, the output of the input storage device of module 19 , an analogue of device 18.1, is connected to the inverse input of the blocking element And 5 and through the logical element OR 27 in parallel with the button 28 for manually turning on the control is connected to the control input of the sensor 2. The output of the output storage device m module 19, an analog of device 18.3, is connected to the light signaling device 29 of the health of sensor 2.

In module 20, the light indicator 30 of the sensor 3 malfunction, the logical element OR 31, the button 32 for manually activating the control of the sensor 3 and the light indicator 33 of the health of the sensor 3 are connected similarly to the same elements interacting with the modules 18 and 19.

The turn-on time of the command channel 21 for automatic health monitoring, connected in parallel to the inputs of all modules, is set to be larger than the largest of the time constants of the time delay elements of any of the modules.

The device operates as follows.

In the initial state, at the output of the sensors 1, 2, 3, there is no signal.

At the inverse inputs of the summing element And 11 there are no signals 7.2, 8.2 and 9.2 from the output of blocks 7, 8 and 9 about the malfunction of the controlled device. Accordingly, at the output And 11 there is a signal including a light signaling device 12 of serviceability of the controlled object.

At the inputs of OR 13, there are no signals 7.3, 8.3, or 9.3 from the outputs of blocks 7, 8, or 9, and the signal does not arrive at the buzzer 14.

When any sensor is triggered, for example, sensor 1, the signal from the output of sensor 1 is fed to the input 7.1 of the signaling unit 7, to the recording input of the input storage device 7.4, and to the input of the acknowledgment element AND 7.5. From the output of the device 7.4 through the element OR 7.6, the signal goes to the direct input of the element And 7.7

Because at the second, inverse, input And 7.7 there is no signal 15.1 from the acknowledgment button 15, a signal is transmitted from the And 7.7 output to the intermittent signal element 7.9. From the output of element 7.9 through the element OR 7.10, a signal with a given on-duty cycle is supplied from the output of the module 7.2 to the light signaling device 10 of the malfunction and to the inverse input of the element And 11, blocking the inclusion of the light signaling device 12 of the working condition of the object.

At the same time, the signal from the output of the OR element 7.6 enters the input of the And 7.8 element. At the second, inverse, input And 7.8 there is also no signal 15.1 from button 15, therefore, from And 7.8 the signal through output 7.3 of the module and element 13 is fed to an audible warning device 14 to attract the attention of the operator.

When the operator presses the acknowledgment button 15 (confirmation that the object's fault signal has been received by the operator), the signal 15.1 from its output goes to the recording input of the storage device 7.11 and through the OR element 7.12, in parallel with the signal from the output of the device 7.11, goes to the inverse inputs And 7.7 and 7.8, to the input AND 7.5 and to the reset input of the device 7.4.

If the signal from the output of sensor 1 is stored, a constant signal appears at the output of AND 7.5, which, through OR 7.10 and the output of the unit 7.2, goes to the light signaling device 10 and the inverse input And 11. At the same time, the signaling device 10 is turned on by a constant light, and the light signaling device 12 goes out.

The outputs of the elements And 7.7 and 7.8 are blocked with the input to the inverse inputs of these elements of the signal from And 7.12.

Element 7.9 and the buzzer 14 are disabled.

After the disappearance of the object's fault signal, the signal from the output of the sensor 1 is removed, while the signal to the reset input of the storage device 7.11 is received.

The signal from the output AND 7.5 is removed, the light signaling device 10 is turned off, the light signaling device 12 is turned on.

The circuit returns to its original state.

If, after acknowledging the signal from the sensor 1, the sensor 2 (3) is triggered, the circuit of block 8 (9) will work similarly. In this case, the indicator 16 (17) will turn on with intermittent light and the sound indicator 14 will again turn on via OR 13.

When the button 15 acknowledges the signal from the sensor 2 (3), the signaling device 16 (17) is turned on by a continuous glow, the sound signal is turned off.

When manually monitoring the health of sensor 1 (2, 3), the operator uses the button 24 (28, 32) to send a signal through the OR 23 (27, 31) signal to the control input of sensor 1 (2, 3). The operator holds the button pressed until a signal appears on the output of the sensor 1 (2, 3), similar to the signal of the actual operation of the sensor. The circuit of block 7 (8, 9) is triggered, as with the actual operation of the sensor.

The signal of automatic monitoring of the health of sensors 1, 2, 3 is fed to the inputs of the modules 18, 19, 20 at the same time through channel 21 with a given frequency.

We will consider the operation of modules 18, 19, 20 using the example of the operation of module 18.

The signal of channel 21 is input to the recording input of input memory device 18.1 and, from its output, goes to the inverse input of blocking element And 4, blocking the signal from sensor 1 to block 7, and through OR 23, the signal goes to sensor control 1.

At the same time, in the module 18, the signal from the output of the device 18.1 is fed to the input And 18.2 and to the input of the device 18.4 time delay, which controls the working time of the sensor 1 by the signal for monitoring its health.

When the sensor 1 is activated before the time constant of the device 18.4 has expired, the signal from the output of the sensor 1 is fed to the input AND 18.2 and to the inverse input AND 18.5.

The signal from the output AND 18.2 is fed to the recording input of the output memory device 18.3 of the module 18, which includes the sensor 25 of the sensor health and through OR 18.7 sends a signal to the reset input of the device 18.1.

The signaling device 25 is turned on until an automatic control signal is received via channel 21 to the inverse input of the reset device 18.3.

If no signal from sensor 1 is received during the time constant 18.4 of the device, the signal from the output of device 18.4 via AND 18.5 (there is no signal 1.1 from the output of sensor 1 at its inverse input) will go to the recording input of the additional storage device 18.6, and from its output - to the sensor malfunction signaling device 22, and also via OR 18.7 to the input reset input of the memory device 18.1 and channel 22.1 to the input OR 7.6 of the signaling unit 7.

The circuit of the alarm unit fulfills in the same way as it fulfills with the actual operation of the sensor.

In the initial position, the circuit is translated by pressing the acknowledgment button 15 on channel 15.1, while the signal is supplied both to block 7 and to the reset input of the device 18.6.

The application of the proposed device improves the reliability of the health monitoring of the controlled object.

Claims (1)

A device for signaling a malfunction of a monitored object, containing in each channel a sensor that monitors the state of the object, an alarm unit, to the first output of which an optical signaling device of the object is connected, and an audio signal device is connected to the outputs of the signaling units of all channels through the first logical OR element, and the outputs of light signaling devices faults of all channels are connected to the light annunciator of the object health through the inverse inputs of the summing logic element And, pr this, in each channel, the signaling unit contains an input storage device connected to the first block input by an output connected via an output through a second logical element OR to direct inputs of logical elements AND sound and light alarm, the output of the light signal element AND is connected through an intermittent signal generating element and a third logical OR element to the first output of the signaling unit, to the other input of the third element OR, through the logic element AND of the signal acknowledgment, the first input is connected b an alarm window, the second input of which, connected to the acknowledgment button, is connected in the block to the recording input of the additional storage device and through the fourth logical element OR in parallel with the output of this additional storage device, to the reset input of the input storage device, to the direct input of the acknowledgment element And to the inverse inputs of the elements And light and sound alarm, and to the inverse input of the reset of the additional storage device connected to the output of the sensor, characterized in then the device in each channel contains a module for automatic monitoring of the health of the sensor, consisting of a series-connected input storage device, the first logical element And and the output storage device, and also including a device for delaying the output time, connected by the input to the output of the input storage device, the output is sequentially through an additional logical element And and an additional storage device to the light signaling device of the sensor malfunction, while in the device, the output of the input storage device of the mentioned module is also connected to the inverse input of the blocking logic element AND, connected by the second direct input to the output of the sensor and the output to the first input of the alarm unit, the output of the output storage device of the mentioned module is connected to the light signaling device of the sensor, and through the fifth logical element OR in parallel with the output of the additional storage device to the reset input of the input storage device of the module, while in the mod For automatic control, the automatic control command channel is connected to the recording input input of the input storage device and to the inverse input reset of the output storage device, to the second - direct - input of the first element AND and to the second - inverse - input of the additional element And the sensor output is connected, the reset input of additional storage the device is connected to the acknowledgment button, and the output of the additional storage device of the above-mentioned module is connected in the signaling unit to the input of the second IL element in parallel with the output of the input storage device of the alarm unit, the output of the input storage device of the automatic control module is designed to supply the sensor through the sixth logical element OR, to which is also connected a button for manually turning on the control, a signal providing a signal similar to the actual operation signal at the output of the sensor sensor, and the time constant of the time delay device is made greater than the time constant of the sensor’s response to the signal the same automatic control channel, the turn-on time of which is greater than the time constant of the time delay device of any of the automatic control modules in all channels of the device.