SU1501116A1 - Arrangement for multipoint alarm of emergency situations - Google Patents

Abstract

The invention relates to automation and can be used in systems of centralized monitoring and signaling of parameters and states of various objects, communication lines and signal sensors. The aim of the invention is to increase the reliability, functional reliability of the device by providing automated control of the functioning of the nodes and blocks. The goal is achieved by the fact that in a device containing signaling channels, each of which is made up of two sensors, three communication lines, a matching unit, a control signal generating unit, a signaling unit that is made of a sound alarm device and light signaling units according to the number of signaling channels, each of which is made of four amplifiers and four elements of the display, an operation mode switch, three alarm test switches, two button contacts, a signal generator, a monitor control button STI line information acquisition unit which is configured from OR gate and a control element in each signaling channel control block is entered, and in each light-signaling node administered fifth amplifier and a fifth indicating element. The device provides control of the health of the elements, as well as the self-control of the elements and components of the control unit during operation. 2 hp ff, 4 ill.

Description

The invention relates to automation and can be used in systems of centralized monitoring and signaling of parameters and states of various objects, communication lines and signal sensors.

The aim of the invention is to increase the reliability and functional reliability of the device by providing automated control over the functioning of the nodes and blocks during operation.

FIG. 1 is a diagram of the proposed device for multipoint alarm signaling} in FIG. 2 is a diagram of the matching unit; FIG. 3 is a diagram of a signaling unit; FIG. 4 is a diagram of a control unit.

The device contains signaling channels 1, each of which is made up of sensors: cocks 2 and 3, lines 4-6 of communication, block 7 of matching, block 8 of generating control signals.

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including elements AND 9-14, elements OR 15-24, selective-reset button 25, decoder 26, node 27 of the time delay of the leading edge of the signal, consisting of a single vibrator 28, element NOT 29 and memory triggers 30-32 ( D-flip-flops), alarm block 33, button contacts 34 and 34j, operating mode switch 35, alarm check switches 36-38, signal generator 39, line fault control button 40, information-gathering block 41 containing the OR 42 element, control element 43 , the sound blocking button 34j, each alarm channel 1 contains a block 44 to ontrol

The matching unit 7 is made of resistors 45-50 and diodes 51-53.

The signaling unit 33 comprises light-signaling units 54 made of amplifiers 55-59 and indication elements 60-64, an audible alarm 65,

The control unit 44 contains AND 66 and 67 elements, a threshold element 68, a multiplexer 69, an EXCLUSIVE OR element 70, an OR element 71, a NOT element 72, a delay element 73, an AND-NOT element 74, a control signal generating unit 75 of 76 and 77, the elements AND-NOT 78-80, the element STARPLE OR 81, the elements AND 82 and 83, the element OR 84, the trigger 85 (RS flip-flop) and the display element 86. In addition, figures 1 and 2 depict a common power bus 87.

The device works as follows.

The operating mode switch 35 provides two modes of operation: Operation and Prevention. In the operating mode, after switching on the device, the unit-level signal from the operation mode switch 35 is supplied to the inputs of the And 9-11 elements of the signaling channel 1. In the absence of alarm conditions, pressing the button 34 sets the f state to the zero state of the trigger 30-32 of the memory of channel 1 of the signaling system. In this case, the zero-level signal from button 34 through the element UL 24 is fed to the R inputs of the memory trigger 30-32 and resets them to the zero state. At the same time, the signal is fed to the input element And 14, which

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in the absence of alarm conditions, it is closed by the zero signal level coming from the output of the element OR 18,

does not trigger the one-shot 28, which is triggered only on the front of the unit level signal. Therefore, at the output of the element NOT 29, a single level signal is maintained, which is fed to the C inputs of memory triggers 30-32, without affecting the state of the latter, since D triggers respond to the information signal only when the signal changes to C the input from O to the Zero-level signals from the direct outputs of the trigger 30 and 31 memory are fed to the inputs of the amplifiers 56 and 57 of the corresponding light signaling unit 54 of the alarm unit 33, and from the direct output of the 32 trigger memory the signal of the zero level goes through the element 13 at the entrance effort ate 58 corresponding to the channel 1 signal light assembly 54 signaling unit 33 signaling. In this case, the elements 61-63 of the display unit 33 alarm is not light. The device is ready to work with sensors 2 and 3 signals. Information about the state of each monitored object, obtained from signaling channels 1, is collected in information collection unit 41 and is sent to an audible alarm 65. block 33 alarm. The state of each object is characterized by information received from the contact sensors 2 and 3 of the signals through a three-wire communication line 4-6. The information at the output of sensors 2 and 3 is presented in the form of two discrete values: 1 and / or O. Switching states of sensors 2 and 3 is carried out simultaneously and only if there is a control action or after it has been removed (return to the initial state) . In the device, the following types of monitoring are possible, determined by the states of the contacts of sensors 2 and 3 and connecting lines 4-6 of communication, regardless of the states of contacts of sensors 2 and 3: monitoring the initial state of sensors 2 and 3, with which Open 4 - 5 is closed - 6 is closed, the emergency state of the object is closed, in which 4 is closed - 5 is closed - sensor fault monitoring is open 2

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and 3, in which Open 4 - closed 5 - open 6 or Closed 4 - open 5 - closed control of the communication line failure, with which 4-6 Open (interruption of communication lines outside the object) or Closed 4-6 (short circuit communication outside the object.

The initial state of sensors 2 and 3, in which Open 4 is closed 5 is closed 6, is characterized by a binary code 100 coming from sensors 2 and 3 through 3 of the 3 link 4-6 to the inputs of matching unit 7, In block 7 The ratio of the resistances of the resistors 45-50 provides, at a given voltage of the power source, the formation, depending on the state of the contacts of the sensors 2 and 3, of a single or zero signal level, which through the elements 9-11 and OR 15-17 arrive at the inputs of the decoder 26 If there is a code 100 at the input of the decoder A signal of a single level control is generated which is fed to the input of the signaling unit 33 and through element 55 causes the indication element 60 to glow. The initial state of the sensors.

The emergency state of the object, in which 4 is closed - 5 is closed - 6 is open, characterizes the code 001 coming from sensors 2 and 3 to the inputs of the decoder 26 along circuits analogous to the passage of signals through the control of the initial state of sensors 2 and 3. In this case at the first output of the decoder 26, a single level signal appears, through the element OR 19, enters the input of the memory D-flip-flop 30 (alarm) and simultaneously through the open element I. 12, at the second input of which there is currently a single-unit enable signal inverse level output of memory trigger 30, through element OR 18 to element AND 14, at the second input of which there is a single level signal from the output of element OR 24. On the positive edge of the signal of a single level from the output of element 14, a one-shot 28 is started, at the output of which a positive pulse is generated polarities with a duration determined by the necessary delay to prevent false

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triggers of memory triggers 30-32, bounce of contacts of sensors 2 and 3 in a transient mode and, in addition, ensure detection of triggers 30-32 from possible impulse noise in lines 4-6 of communication. On the falling edge of the pulse formed by the one-shot 28 and inverted by the element HE 29, clocking is performed on the C input of memory triggers 30-32. As a result, information 1 present at the D input of memory trigger 30 passes to its output, is memorized, and a zero level signal from the inverse output on the S input is simultaneously locked. The same signal of the zero level through the E-t ment And 12 is fed to the input of the element OR 18, ensuring its switching in other emergency situations - faults of sensors 2 and 3 or lines 4-6 of communication arising after an accident. The unit level signal from the direct output of the memory trigger 30 through the OR element 23 enters the information collection unit 41, where through the OR element 42 and the control element 43 enters the first input of the alarm unit 33 and triggers the sound signaling device 65. At the same time The level from the direct output of the memory trigger 30 arrives at the third input of the signaling unit 33 and, through the amplifier 56, the indication 61 element of the Avari O. object is ignited. The sound is turned off by pressing the button 342. The sound is blocked from the information collection unit 41. The considered communication structure and organization of the memory trigger 30 provides for storing and saving information about an emergency condition in the absence of an operator. Triggers 31 and 32 of memory work similarly. If the fixed object crash is eliminated, then the state of the sensors 2 and 3 is changed to the initial one. In this case, in the alarm unit 33, along with the lightening of the accident indication element 61, the indication element 60 is turned on. The initial state of the sensors. At the same time, pressing the button 25 for selectively resetting the control signal generating unit 8 of the given signaling channel 1 and the zero level signal through the OR 24 element.

and along circuits analogous to the passage of the rpm signal; its reset, the memory trigger 30 is set to the zero state. In this case, the display element 61 of the object Avari in the alarm unit 33 stops and the buzzer 65 stops working if it has not been previously turned off. The device is ready to receive the next alarm. If in the time interval of the selective reset action, the duration of which may be several seconds, after the trigger 30 of the memory is set to the zero state, the next emergency state of the object occurs, then in the D-BXO trigger of the memory 30 and at the input of the element And 14 single level signals will be present. In this case, at the end of the selective reset signal (at the back of its front), the one-shot 28 is started and a delay pulse is formed. On the falling edge of the delayed pulse element HE 29, a new information about the accident is recorded in the memory trigger 30 and the alarm unit 33. The faults of sensors 2 and 3 in which Open 4 is closed 5 is open 6 or Closed 4 is open 5 is closed 6 are characterized by codes 101 or 010, respectively, which occur when the communication lines 4 and 6 are broken or short-circuited on the object due to unresolved states of contact groups of sensors 2 and 3 during their deformation. The specified unresolved states of the switching contact groups of sensors 2 and 3 may occur after the initial state, if there is a controlling influence at the moment of the object accident and after an accident at the moment of removing the controlling influence, In the first case, after the initial state of sensors 2 and 3 at the time of the object's accident, instead of the alarm code 001, a code 101 or 010, arriving at the inputs of the decoder 26, will appear; on its second or third output, a control signal is generated, which through the OR 20 element enters the D input of memory trigger 31 (not rectified sensors 2 and 3) and through an OR gate 18, AND gate 1 and node 27 delays the leading edge

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signal - to its C-input, providing memorization of information about the malfunction of sensors 2 and 3. At the same time, the unit-level signal from the direct output of the memory trigger 31 and through the OR element 23 and the information collection unit 41 enters the inputs of the alarm unit 33, where it triggers buzzer 65 and the indicating element 62 is turned on. Sensor malfunction. At the same time, the unit level signal from the output of the element OR 20, in the absence of an object crash, passes through the element OR 19, opened by the zero signal from the output of the decoder 26, to the D input of the memory trigger 30 and, similarly to that considered in the event of an accident, it is stored The alarm unit 33 turns on the object Avariya indication element 61. In block 33 of the alarm in this case, the elements 61 and 62 of the indication Malfunction of the sensors and the Avar of the object are illuminated. If there is an object alarm condition characterized by the code 001 and the control action is removed, instead of the initial state code 100, a code 101 or 010 occurs. In this case, the zero signal from the inverse output of the memory trigger 30 passes through the AND 12 element to the element input OR 18 and ensures that the control signal passes from it from the output of the OR element 20 to the input of the node 27. Further, the operation proceeds as described above, while in block 33 of the alarm along with the luminance of the display element 61 ment 62 indications Sensor malfunction.

Malfunctions of lines 4-6 of communication, in which 4-6 or 4-6 are closed, are respectively interrupted or short-circuited communication lines outside the object (or at its output) and are characterized by codes 111 or 000. When a fault occurs 4-6 links and the receipt of the corresponding 111 or 000 codes from link 4-6 to the inputs of the decoder 26, a control signal is generated from its outputs, which through the OR 21 element is fed to the D input of memory trigger 32 (faults of communication lines ), and through the element OR 18 and the node 27 of the delay

the leading edge of the signal - to its C input, ensuring that information is stored from the fault of the communication lines. The unit level signal from the direct output of the memory trigger 32 through the OR element 23 and the information collection unit 41 is fed to the input of the alarm unit 33 and causes sounding sound signaling device 65. At the same time, the unit-level signal from the direct output of the memory trigger 32, which is a common symptom of a communication line failure, passes through the AND 13 element, opened by the unit-level signal from the output of the OR 22 element, the second input of which It is connected to the open contact of the line fault control button 40 and enters the input of the alarm unit 33, where the link element 63 is turned on. At the same time, in order to clarify the nature of the malfunction of the communication lines 4-6, it is necessary to press the line failure control button 40. At the same time, if the code is 000 (short circuit), then at the input of the element OR 22 a single level signal is set to the output of the decoder 26 and the low frequency signals from the output of the signal generator 39 do not pass through the element OR 22. As a result, The 63 display does not change.

If the device has the code 111 (broken line 4 and 6 communication), then the input element OR 22 is set to a zero signal, passing low-frequency signals from the signal generator 39 to the input of the alarm unit 33 through the open element 13. And the element 63 indications are flashing, i.e. There is information about the presence of a broken line 4-6 connection. When the button 40 is released, the indicator 63 lights with a constant light. If malfunctions of lines 4-6 of communication occur after an object has crashed, in this case, in block 33 of the alarm along with the luminescence of the indicator 61 Avar of the object, the indicator 63 Fault of the communication line is turned on. After troubleshooting sensors 2 and 3 or lines 4-6 and returning to the initial state, the triggers 30-32 of the memory of this signaling channel 1 are selectively reset,

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as a result, the corresponding indicators of the signaling unit 33 are turned off. Similarly, other signaling channels 1 also work. For each channel 1, a general audible warning and individual light indications are used as part of the individual nodes 54 of the block 33, signaling serving each channel 1, which ensures simultaneous and independent operation of the signaling channels.

The control of the correct functioning of the units and units of the device in the working mode is carried out when information is received about the state of objects, communication lines 4-6 and sensors 2 and 3. Signals. The code for this information is output from the outputs of the matching unit 7 to the control unit 44, where, depending on from the number of received code values is converted into the necessary control signals of the zero or single level, which are compared with their corresponding indication control signals at the output of the signaling unit 33. In the presence of paraphase comparison signals, it is established that there is a malfunction in the units of channel 1 of the device, which is indicated in the signaling unit 33. Additional information about the presence of malfunctioning of the channel 1 units of the device and the indication of the control signal issued to the signaling unit 33 is used as the main criterion for assessing the truth of the displayed state signals.

Automated control in the device is designed to test the electronic equipment of each control signal generating unit 8 and each light signaling node 54 (amplifier 55-58) of the signaling unit 33.

In so doing, block 44 provides for the detection of a malfunction of said units of a device, which are determined, first of all, by a malfunction of the functional units and elements included in them. Malfunctions of components and elements can occur at any time and can be characterized as the absence of any element in the presence of a working

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signal at its input, and the false triggering of the element in the absence of a working signal.

The monitoring of the state of the elements and units of the device during operation upon receipt of signals of single states, as well as their combinations, is performed as follows.

Upon receipt of the initial state code 100 of sensors 2 and 3 from the outputs of the matching unit 7 and the absence of malfunction of the elements of the control signal generating unit 8 and the alarm unit 33, its discharge signals are fed to the control inputs. AO, A1, A2 of multiplexer 69 and through the inputs of node 75 of forming a control signal are output when the high-order (unit level) signal is inverted through the NOT element 76 to the inputs of the AND-NE element 79 and when the low-order code is inverted 77 to the inputs of the NAND 78 element, In addition, the signal values of the two most significant bits of the code (corresponding to 10) are fed to the inputs of the EXCLUSIVE OR 81 element. At the same time, the output of the NAND 78 element will present a signal the zero level that goes to the inputs of the elements AND-NOT 80 and OR 84, at the output of the element EXCLUSIVE OR 81 is a signal of a single level, which is fed to the input of the element AND 82. The node 75 is tuned to the 100 code of the initial state of sensors 2 and 3 and therefore at the output of the element AND-NOT 79 in this case there will be a single signal

There is a low level that goes to the R input of the trigger 85 and to the input of the element IS NOT 80, the zero signal from the output of which closes the elements AND 82 and 83. As a result of the presence of two signals of the element OR 84 signals of the zero level, it will its output and, accordingly, at the S input of the trigger 85, which in this case is set to the zero state by the signal of the unit level at the R input. At the same time, the signal of the single level from its inverse output does not change the state of the element And 82, and the signal of the zero level from its direct output confirms the state of the element And 83, at the output of which there is a signal of the zero level, the display element 86 does not light up

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with . Thus, when the initial state code 100 of sensors 2 and 3 arrives at the output of node 75, a corresponding zero level control signal is formed at its input, which through AND 67 enters the input of EXCLUSIVE OR 70, and through delay 73 - the input element AND-NOT 74, the output of which will be a signal of a single level, which opens the element And 66 and enters the second input of the element And 67. In the presence of control inputs AO, A1, A2 of the multiplexer 69 code 100 opens its information input D4 and on availability The de-amplifier 55 of the light-signaling unit 54 of the corresponding single-level indication control signal illuminates the display element 60. The initial state of the sensors and this signal will be present at the information input D4 of the multiplexer 69 and at the input of the threshold element 68 that operates only when there are at least two operating signals at its inputs signals. Therefore, the signal of the zero level from its output goes to the input of the EXCLUSIVE OR 70 element, at another input of which at this moment there is a control signal of the zero level from the output of node 75. The zero signal from the output of the EXCLUSIVE OR 70 element is fed to the input of the OR 71 element. If there is a single-level signal at the information input D4 of multiplexer 69, its inverse code will have a zero-level signal and as a result, the output of the OR 71 element will have a zero-level signal, which through the NOT 72 element changes the level of a single signal output element 74. The AND-zero level signal at the output of OR gate 71 extending through the amplifier 59, causes the indicating element 64 emitting device Fault channel.

Upon receipt of the sensor 100, the initial state of the sensors and the absence of a single level indication control signal at the output of the amplifier 55 due to malfunctioning elements, the display element 60 The initial state of the sensors is not lit, and the zero signal from the output of the amplifier 55 enters the input of the threshold element 68 information entry D4

multiplexer 69. Threshold element 68 in this case does not change its state, so a zero level signal will be present at its output. At the same time, the signals at the output of the pilot signal forming unit 75, the inputs and outputs of the element AND 67, the element EXCLUSIVE OR 70, the element AND-NOT 74 remain the same as in the absence of a malfunction of the elements of the device. If there is a zero-level signal at the open information input D4 of multiplexer 69, a unit-level signal appears at its inverse output, which through the OR 71 amplifier 59 turns on the indication element 64 Failure of the device channel. In this case, a false signal exclusion occurs.

When the initial state code 100 of sensors 2 and 3 arrives, the output of the indication control signal is absent at the output of the amplifier 55, and the indication control signal appears at another output of the device, for example, the output of amplifier 56 due to a fault in the channel elements, then in this case instead of element 60 indications The initial state of the sensors is illuminated by the element 61 of the Avari object indication. The rest of the work is similar to the previous case (the absence of a signal at the output of the amplifier 55). A malfunction of the device elements is detected by the multiplexer 69. In this case, if there is a malfunction of the device elements and the glow element of the display 86 is absent, the indicator of the control signal is zero. In this way, the alarm state of the object indicated by the display element 61 is not true, because there is a false signal replacement.

When the initial state of the sensor code 100 is received and the indication control signals are simultaneously or sequentially in time at the amplifier 55 and at another output of the device, for example, the output of amplifier 56 due to a malfunction of the elements of the device, then the initial indication 60 the state of the sensors and the element 61 of the Avari object indication. In this case, the signal of the unit level from the output of the amplifier 55 is fed to one input of the threshold element

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This 68 and information input D4 multiplexer 69, and from the output of amplifier 56 through the open element AND 66 to another input of the threshold element 68 and information input D1 of the multiplexer 69. Since the control inputs of AO, A1, A2 of multiplexer 69 are present in this case Only the initial state code 100 of sensors 2 and 3, which opens only the information input D4, the appearance of the second signal at the closed information input D1 does not change the state of multiplexer 69. Therefore, the inverse output of multiplexer 69 will have a zero signal level at one of the inputs of the element OR 71. When two signals come to the inputs of the threshold element 68, it is triggered and a signal of a single level appears at the inputs of the element EXCLUSIVE OR 70, the other input of which is present the signal is zero level from the output of the element And 67. At the same time, the signal of the single level from the output of the element EXCLUSIVE OR 70 through the open element IL-71 and the amplifier 59 turns on the element 64 of the indication Device channel malfunction. ting elements of the device and no display-emitting element 86, the pilot signal sign is zero. In this case, in the presence of two luminous elements 60 and 61 of the display, the initial state of the sensors and object Avariya the luminescence of the first element 60 of the display is true, and the element 61 is false. In this case, there is a false add signal.

Upon receipt of the emergency state code 001 of the object into the control unit 44 and the absence of malfunction of the channel elements of the device, it affects the control inputs of the AO, A1, A2 multiplexer 69 and opens the corresponding information input D1 corresponding to the code, and in the control signal generating unit 75 A zero level signal appears at the output of NE-NE 79. The presence in the two highest bits of the code of the values 00 at the input of the EXCLUSIVE OR 81 element also results in the appearance of a zero signal at its output15

de. Elements NOT 77 and NAND 78 of node 75 are tuned to the object alarm code 001 and therefore, at the output of NAND 78, in this case there will be a signal of a single level, which is fed to the input

OR 84 and to the input of the element IS-NOT 80, the signal of the zero level from the output of which closes the elements AND 82 and 83. The signal of the unit level from the output of the element IS-NE 78 passes through the element OR 84 and sets the trigger 85 to the unit 85 on the S input. condition. In this case, the unit-level signal from its direct output does not affect the closed element E 83, the output of which will be a zero-level signal and in this case the display element 86 does not light up. Thus, when the object alarm code .001 arrives at the inputs of node 75, a corresponding zero level control signal is formed at its output, which is similar to the case of the initial state of sensors 2 and 3, through element 67 it goes to the input of element EXCLUSIVE OR 70, and through the delay element 73 and the NAND element 74 opens an AND element 66, In the presence of a single level indication control signal at the output of the amplifier 56, the element 61 indication of the object Avari is lit and this signal will be present on the open information input e D1 multiplexer 69, and through open element AND 66 at the input of threshold element 68. At the same time, at the output of threshold element 68 and inverse output of multiplexer 69, there will be zero level signals that, when passing through the elements, are similar to the case of the initial state of sensors 2 and 3 do not cause the display element 64 to burn. Device channel malfunction.

Upon receipt of the alarm code 001 of the object and the absence of the amplifier 56. the indication control signal or its appearance at another output of the device (i.e., replacing this signal with another) due to a malfunction of the channel elements, in this case the malfunction of the device elements The multiplexer 69 is similar to that considered for the initial state code of sensors 2 and 3.

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In this case, if there is a channel failure and a pilot signal sign equal to zero, the indicated state is not true, because there is a false exception or a false signal replacement.

When the alarm code 001 arrives at the facility and simultaneously or sequentially in time the indication control signal appears at the output of amplifier 56 and at the other output of the device due to a malfunction of the device elements, in this case the fault reveals the threshold element 68 as described for the initial state code No sensors 2 and 3. At the same time, in the presence of a malfunction and a sign of the control signal equal to zero, as well as the luminescence of the display elements 61, the Avariya of the object and, for example, 62 the Malfunction of sensors j Indicating elements 61 is true, and element 62 is false. In this case, there is a false signal addition.

If the receipt code 001 ava. When an object appears at the outputs of the device, two indication control signals, the Avarion of the object and the Initial state of the sensors, arriving simultaneously or sequentially in time, the device channel malfunction and the indicator of the control signal equal to zero are detected. In this case, two cases are possible.

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In the first case, the indicated combination of signals occurs during actual operation of the device, when, after the accident has been eliminated, the state of the sensors 2 and 3 changes to the initial state. The value of the pilot signal remains zero. In this case, having for this combination

the pilot signal is equal to zero, or having additional information that the object crash has been eliminated, pressing the selective reset button 25 of the corresponding alarm channel 1 resets the memory trigger 30 to the zero state and thereby turns off the illumination of the 61 and 64 elements of the Avari object indication and Channel failure

devices. Here, the display element 60 is lit. The initial state of the sensors is true.

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. In the second case, this combination of signals may occur when, in addition to a real object accident, there is an additional malfunction of the channel elements of the device, in particular the circuit elements of the initial state of the device. In this case, for the given combination, the pilot signal is zero by pressing the selective reset button 25 of the corresponding signaling channel .1, after resetting it to the zero state, the memory trigger 30 (alarm) is reset to one (the status signal the alarms, as well as the signals of other states of a static nature) and as a result, the elements 61 and 60 of the Avar object indication and the Initial state of the sensors will be illuminated again. In this case, if there is a fault and a pilot signal is equal to zero, the luminance of the display element 61 of the object Avariya is true, and the glow of the display element 60 The initial state of the sensors is false. In this case, there is a false add signal.

Upon receipt of the object alarm code 001 and the detection of the considered faults of elements in the control block 44, the occurrence of the status code and the corresponding control signal may occur non-simultaneously with the appearance of the corresponding indication control signal at the output of the amplifier 56 due to the presence of control signals in block 8 node 27 of the time delay for triggering memory trigger 30. The value of this delay may be in the order of several units or tens of milliseconds. At the same time, at the output of the OR element 71, a short-term pulse of a single level may occur with a duration equal to the delay time of triggering of the memory trigger 30. However, taking into account the one-time nature of the process and the possible inertia of the element / indication and the operator himself, the indicated possible divergence of the signals will not lead to a false indication of an accident and therefore has no practical significance. Similar reasoning applies to the rest of the indication control signals coming from

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the outputs of the trigger 31 and 32 memory through the appropriate amplifiers.

Upon receipt of the code 000 or 111 of the line fault in the control unit 44 and the absence of element malfunction, it acts on the control inputs of the AO, A1, A2 multiplexer 69 and opens the corresponding information input TO or D7, and in the control unit 75 The signal at the output of the elements AND-NE 78 and AND-NE 79 appears signals of the zero level. The presence of 00 or 11 at the input of the EXCLUSIVE OR 81 element in the two highest bits of the code also results in the appearance of a zero signal at its output, which closes the AND 82 element. The zero level signals from the outputs of the AND-78 and AND-NOT elements 79 arrive at the inputs of the element IS-NE 80, at the output of which in this case a single level signal appears. This signal indicates the presence of a common fault, and the zero-level signal from the output of the EXCLUSIVE OR element 81, in the presence of a common fault, identifies a fault in the communication line. The signal of a single level from the input of the element AND-NOT 80 is fed to the input of the closed element And 82, without changing its state, and to the input of the element And 83. When signals of the zero level are received from the outputs of the element AND 82 and AND-NOT 78 to the inputs of the element OR 84, a zero level signal also appears at its output, which is set at the S input of trigger 85. As a result, the trigger 85 remains in the initial zero state and the zero level signal from its direct output passes through the element I .83 to the output node 75 and in this case, the display element 86 is not illuminated . As a result, when the fault code 000 or 111 is received by the line 4, 5, and 6 of the connection to the inputs of node 75, a zero level control signal is generated at its output, which is the same as for the object alarm code through. element AND 67 is fed to the input of the EXCLUSIVE OR 70 element, and through the delay element 73 and the NAND 74 element opens AND 66 element. In the presence of the amplifier 58 at the output of the signal 5) the indication is indicated by the unit level indication

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Display element 63 is faulty. The link is faulty and this signal will be present at the input of threshold element 68 and at the open information input of TO or D7 multiplexer 69. At the same time, at the output of threshold element 68 and inverse output of multiplexer 69 there will be zero level signals, which when passing through the circuit of elements in the same way as when / the receipt of the object’s accident code, they do not cause an indication element 64 from the lifetime. Device channel malfunction ..

When the code 000 or 111 is received, the communication lines 4, 5 and 6 are faulty and there is no indication control signal at the output of the amplifier 58 or when it appears at another output of the device, or if there are two indication control signals at the output of the amplifier 58 and at another - the course of the device due to the malfunction of the elements, the operation proceeds as in the case of an object accident code. In this case, the presence of two control signals indication Failure of the communication line and the Source

These sensors are analyzed in the same way as the two considered cases of an object accident.

When the code 010 or 101 is received, the sensors 2 and 3 are faulty in the control unit 44 and there is no malfunction of the channel elements of the device, it opens the information input D2 or D5 of the multiplexer 69 via the control inputs of the AO, A1, A2 and similarly to the case of the arrival of the fault code of the communication line, a single level signal appears at the output of the IS-NE element 80 (general fault signal), which enters the input of the AND 82 element and opens the AND 83 element. In this case, the presence of two high-order bits values 0 1 or 10 at the input of the EXCLUSIVE OR 81 element leads to the appearance of a single level signal at its output, which is fed to another input of the And 82 element, the third input of which in this case receives a single level signal from an inverted trigger 85 signal. the output of the element EXCLUSIVE OR 81 in the presence of a common signal

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faults identifies the faults of sensors 2 and 3. It is possible in principle to use for this purpose two lower bits of the code (10 or 01), which, in the presence of a common fault signal, unambiguously identify the faults of sensors 2 and 3. In the presence of three signals of a single level at the input of the AND element 82 at its output a single level signal appears which, through the OR element

84 sets trigger on S-input

85 in one state. At the same time, the signal of the unit level from its direct output passes through the open element I 83 to the output of the node 75 and includes the display element 86. As a result, when a code 010 or 101 is received, the malfunction of sensors 2 and 3 at the inputs of the node 75 generates a single level control signal at its output, which is fed to the input of the And 67 element. holder and element AND-NOT 74 currently provides the open state of the elements AND 66 and 67 for the delay time. The delay element 73 provides a maximum delay time equal to or slightly greater than the sum of the delays in the recording circuit of the memory trigger 85, the threshold element 68, and the elements 70, 71, and 72. As a result, the unit level signal is set at the input of the EXCLUSIVE OR 70 element. sensors 2 and 3 at the outputs of the device Two indication control signals correspond: Fault, sensors at the output of amplifier 57 and Avariya of the object at the output of amplifier 56, since sensors 2 and 3 are faulty (as noted earlier) occurs after the initial state of sensors 2 and 3 in the presence of a control action at the time of an object crash, and for this, the device artificially generates an indication control signal of the object Avariya that arrives at the output of the device simultaneously with the indication control signal Sensor Failure. If the indicated single-level signals are shown in the code of amplifiers 57 and 56, the display element 62 is lit. The sensors are malfunctioning and the display element 61 is displayed. In addition, a single level indication control signal with

2115

the output of amplifier 57 will be present at the input of threshold element 68 and at the open information input D2 and D5 of multiplexer 69, and a single indication control signal from the output of amplifier 56 passes through the currently open AND 66 element to another input of threshold element 68 and enters the closed information D1 input of the multiplexer 69. In this case, the inverse output of the multiplexer 69 will have a zero level signal, and you. When threshold is triggered, when it is triggered, a single level signal arrives at the input of the EXCLUSIVE OR 70 element, the second input of which currently contains a single level control signal and therefore a zero level signal and therefore a zero signal A level appears at the output of the element OR 71, which corresponds to the absence of burning of the element 64 of the indication Device channel failure. At the same time, the zero signal from the output element OR 71 through the element NOT 72 as a single signal

the level is fed to the input of the element AND-NOT 74, at the other input of which, with a delay, through the element 72, equal to (or slightly longer) the time of arrival of the signal at the first input, the signal of the unit level is also set. As a result, a zero level signal appears at the output of the NAND 74 element. In this case, if there is no failure of the device channel, the node of the elements NE 72 73 is delayed and the NAND 74 goes into standby mode, the purpose of which is to determine the possible failure of the device after the arrival of two indication control signals. To provide this mode with the elements of the control unit 44, if there are two indication control signals, it is necessary to block one of the signals at the input of the threshold element 68, since it does not react to the appearance of the third signal after triggering and will provide conditions for making a comparison at the input of the EXCLUSIVE OR 70, for which purpose the blocking signal of a single signal at its input is blocked.

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level through element 67. The object Avariya signal is selected as a blockable display control signal, since it is included in all possible combinations of states coming to the device from external components ei o, namely: Sensor failure - Object accident, Object alarm - Problem sensors, object Avariya - Hc serviceability of communication. If before the arrival of the initial state of the ranks 2 and 3 the malfunction of the device is not detected, then after its arrival (elimination of the emergency conditions) and the production of the selective reset, the standby mode of the node 75 of the elements 72, 73 and 74 ceases, since the circuit of the node 75 of formation the control signal is automatically restored to its original state, and a single level signal will be received from the output of the NAND 74.

When the code 010 or 101 is received, the sensors 2 and 3 fail and the amplifier 56 of the indication control signal fails at the output of the amplifier 56 because of the elements of the device, then in the inverse output of the multiplexer 69 there will be a zero signal instead of two signals, one threshold will be present at the input of the threshold element 68, as a result of which the signal of the zero level from its output goes to the input of the EXCLUSIVE OR element 70, at the second input of which there is currently a control signal of a single level and A single level signal appears at its output, which, through the OR 71 element, is recorded as Failed channel of the device in the same way as described above. In this case, if there is a fault in the channel and the pilot signal is equal to one, the display element 62 is luminous. The failure of the sensors is true, as there is a false elimination of one signal in the signal combination.

With the arrival of code 010 or 101 and the absence of an indication control signal at the output of the amplifier 57. The sensors may fail and the indication control signal generated by the object may also be absent at the same time. Malfunction of elements

the device detects multiplexer 69 and, moreover, since the output of the threshold element 68 in this case is a zero level signal, the EXCLUSIVE OR 70 element also works. In this case, a false elimination of two combination signals takes place. Upon receipt of code 010 or 101

This is also the Initial state of the sensors, in this case the malfunction of the elements of the device is fixed, similarly to the considered case of the presence of three indication control signals. In this case, if the pilot signal has changed its value from one to zero or, having

and the absence of an indication control signal Q additional information on the elimination of sensor malfunction (alteration of alarm conditions, pressed for malfunction of the output elements

Selective reset button of the corresponding signaling channel 1 and the mouth causes a false glow of the elements 62, 61 and 64 of the display Fault sensors

its circuit), the control signal of the Avari object can be present at the output of the amplifier 56. The fault is detected by multiplexer 69 and, in addition, an EXCLUSIVE OR 70 element is triggered. In this case, the Avariar element of the indication 61 is illuminated, a false exception occurs. signal in a combination of signals.

When the code 010 or 101 is received, the sensors 2 and 3 malfunction and simultaneously or sequentially in time appear together with two indication control signals the sensors and the object are malfunctioning the third indication control signal, for example, at the output of amplifier 58 due to malfunctioning elements of the device, this case, as mentioned earlier, after setting the standby mode of node 75 of elements 72-74 and performing blocking operations on the And 66 and 67 elements, the malfunction of the elements of the device detects a threshold element 68. In this case, elements 61-63 of the status indication Malfunction of sensors, the object object, communication line malfunction and the indication element 64 of the device channel malfunction will be illuminated. If there is a malfunction of the device elements and the pilot signal is equal to one, the luminance of the display elements 62 and 61 is malfunctioning of the sensors and object Avariya is true, and the luminous element of the display 63 The malfunction of the communication line is false, there is a false addition of a signal to the combination of signals.

If upon receipt of code 010 or 101 malfunction of sensors 2 and 3, three indication control signals appear at the outputs of the device. Sensor malfunction, Alarm, additional information about the elimination of alarm conditions,

, Avari object and Neis- - When

a button for selectively resetting the corresponding channel 1 of the alarm and the false luminescence of the elements 62, 61 and 64 of the indication is eliminated. Sensor malfunction

The correctness of the channel of the device is that the illumination of the display element 60. The initial state of the sensors is true.

If the indicated combination of three signals appears, the device element malfunctions and the indicator of the control signal is equal to one, then the luminescence of the display elements 62 and 61 is malfunctioning of the sensors and the object Avarion is true, and the display element 60 is luminous. false, occur, due to a malfunction of the elements of the device, and there is a false addition of a signal to the combination of signals.

In all the considered cases of the arrival of the fault code of sensors 2 and 3 and the presence of malfunctioning elements of the device, the signal of the unit level from the output of the element OR 71 through the element NO 72, as a signal of the zero level, enters the input of the element AND-NOT 74 and, although the delay through the other its input will be set to a single level signal, at its output a single level signal will remain, which corresponds to the initial state of node 75 elements 72-74.

With the successive receipt of the object alarm codes 001 and 010 or 101 malfunction of sensors 2 and 3 in the control unit 44 and the absence of malfunction of the device elements, the operation occurs in the same way as in the considered cases of the receipt of single state codes - object malfunction and sensor malfunction. In this case, according to code 001, trigger 85 is set to one state and stores

2515011

condition. At the same time, the signal from its direct output opens AND 83. When the second code 010 or 101 arrives, a common fault signal is output at the output of the IS 80 NOT and passes through the open AND 83 to the output of node 75 and turns on display 86. Thus, upon receipt of the indicated combination of Q indication control signals at the inputs of node 75, a single level control signal is generated at its output, and as a result, elements 61 and 62 of the display Avar object jr, Sensor malfunction and the device element 64 are not lit.

With the successive arrival of 20 codes 001 and 010 or 101 and the absence of the indication control signal 57 on the amplifier 57, a failure of the sensors or its appearance at another output of the device due to a malfunction of the device elements, the fault is detected by multiplexer 69 and, moreover, in the absence of a signal, an EXCLUSIVE OR 70 element is triggered. If there is a malfunction and a pilot signal of one, the element 61 of the Avari object indication is true, a false one-signal exception occurs. or falsely replacing it in a combination of signals.

With the successive receipt of codes 001 and 010 or 101 and simultaneous or sequential in time, they appear together with two indication control signals Object Avari and Fault sensors of the other indication control signal at the other output of the device, including for malfunctions of the device elements, in this case the operation proceeds in the same way as the presence of three signals upon receipt of the fault code of sensors 2 and 3. At the same time, the truth of the candles is determined elements 61 and 62 indicating Avarin object and sensor fault is detected and false adding the third signal to the combination signa- 55 s.

With the sequential receipt of codes 001 of the object and 000 or

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Q jr

20 25 p

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111 line faults. 4, 5 and 6 in the control unit 44 and in the absence or presence of faults in the device elements, operation occurs when a unit-level control signal is generated for this combination in the same way as when the object alarm codes and sensors 2 and 3 failed and, instead of of the display element 62 Sensor malfunction must take into account the display element 63 of the communication line malfunction.

When implementing the considered processes for detecting failure of the device channel elements, it is necessary to indicate the possibility of self-control of the circuit of the control unit 44 in the event of a malfunction of its nodes and elements within each signaling channel 1.

If there is no malfunction of the device elements in the control of single indication control signals and there is any current indication control signal whose value is true, then when the signal changes from zero to one at the output of the control signal generating unit 75 or at the output of the threshold element 68 , multiplexer 69, EXCLUSIVE OR 70 element or OR element 71 due to a malfunction, in these cases the malfunction of the signaling channel 1, containing this control unit 44, is fixed.

If, when monitoring a combination of two indication control signals, there is no malfunction of the device elements and any current combination of signals is present, the value of which is true, then when the signal changes from a single level to zero at the output of node 75 or the output of threshold element 68, S1I from zero on the unit - at the output of multiplexer 69, the EXCLUSIVE OR 70 element, or the OR 71 element due to their malfunction, the malfunction of the signaling channel 1, containing this control unit 44, is also detected. Thus, when single indication control signals are received from the device outputs and the possible failure of the device channel elements is detected, if there is a sign

By means of a control signal equal to zero, it is possible to visually determine the truth of the displayed signals with the establishment of the following investigation factors; false exclusion, substitution or addition of signals. Similar possibilities for evaluating the truth of the displayed signals are provided when a combination of two control signals is received by the indication and when the device channel elements are detected if the control signal is equal to one. At the same time, the truth of the displayed signals is determined both for each signal and for all combinations of signals in the circuit.

As a result of the consideration of the listed processes of detecting the malfunction of the device elements, the exception of the influence of the circuit of the control unit 44 on the operation of the device during its normal operation has been established.

After the failure of the device elements is established by an automated method, its detailing to the functional element is carried out in the Prevention mode, which is set by the operation mode switch 35 by applying a zero signal to the inputs of the And 9-11 elements of all channels 1 signal

lization. In this case, it is possible to assign the necessary combinations to the second inputs of the OR 15-17 elements and at the same time check the functioning of all elements of the signaling channel 1 and the corresponding control outputs.

In addition, in this mode, verification of the control unit 44 is provided. If there is a faulty element in the control unit 44, for example, the threshold element 68, when at its output instead of the zero signal there is a single level signal, then in this case

the assignment of all single control signals, the indication, will be CONSTANTLY the display element 64 will indicate that there is a malfunction of the control unit 44.

Similarly, if there is a faulty node in the control unit 44, for example, the control signal forming unit 75, when

;

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instead of a single-level signal, a zero-level signal is present, then in setting all possible combinations of two indication control signals for a device, the display element 64 will always be lit. Device channel malfunction, indicates a malfunction of the control block 44.

Claims (3)

1. A device for multipoint alarm signaling comprising alarm channels, each made of a first sensor, the first output of which is connected to a common power bus and the first output of the Second sensor, the second output of the first sensor is connected through the first communication link to the first input the matching unit, the third output of the first sensor is connected to the second output of the second sensor and connected via the second link to the second input of the matching unit, the third output of the second sensor via the third connection link To the third input of the matching unit, the first, second and third outputs of which are connected respectively to the first, second and third inputs of the control signal generation unit, the fourth, fifth, sixth, seventh, eighth and ninth inputs of the control signal generation unit are respectively the first The second, third, fourth, fifth, and sixth inputs of the signaling channel; the first, second, third, fourth, and fifth outputs of the control signal generation unit are the first, second, third, fourth, and fifth you With the signals of the signaling channel, the signaling unit consisting of light signaling units according to the number of signaling channels and an audible alarm, each light signaling unit is made of four amplifiers, the output of each of which is connected to the corresponding display element, the inputs of the first, second, third and fourth amplifiers first, second, respectively the third and fourth inputs of the light node alarm system, the unit of information collection, which is made of ele291 OR, whose output is connected to the first input of the control element, the second input of which is connected via the first contact of the button to the common power bus, and the output is connected to the alarm unit's alarm signal, the common power bus is connected to the first terminals of the second contact of the button, to the first output of the switch operation mode and with the first pins of the first, second and third signaling test switches, the second output of the second contact of the button is connected to the first inputs of the signaling channels, the signal generator, the output of which via the control button, it is connected to the second inputs of the alarm channels, the second terminals of the first alarm check switch, the operating mode switch and the second and third alarm check switches are connected to the third, fourth, fifth and sixth alarm channel inputs, the first outputs of the alarm channels are connected with the corresponding inputs of the OR element of the collection of information, the second, third, fourth and fifth outputs of each signaling channel are connected respectively to the first, To that, tert. it and the fourth inputs of the same name of the indication unit of the alarm unit, which is characterized by the fact that, in order to increase the reliability and functional reliability of the device by providing automated control over the functioning of the nodes and blocks during operation, a control unit is inserted into each signaling channel, and a fifth amplifier is inserted into each indication unit of the signaling unit. and the fifth display element, in each signaling channel, the first, second and third outputs of the concord unit, are connected to the same inputs of the control unit, the fourth, fifth, sixth and seventh inputs of which are the seventh, eighth, ninth and tenth inputs of the signaling channel, the output of the control unit is the sixth output of the signaling channel, in each display unit of the alarm unit the output of the fifth amplifier is connected with the fifth indication element, the input of the fifth amplifier is the fifth input display unit, the outputs of the first, second, third and fourth amplifiers in Q 0 5 ,, five 0 0 1630 The first, second, third and fourth outputs of the display unit are co- (the mountains are connected respectively to the seventh, eighth, ninth and tenth inputs of the same signaling channel, the sixth outputs of the signaling channels are connected to the fifth inputs of the same display units of the alarm unit. 2. The device according to claim 1, characterized in that the control unit is made of two AND elements, a threshold element, a multiplexer, an EXCLUSIVE OR element, an OR element, a NO element, a NAND element, a delay element, and a pilot signal generation node, the first The second and third inputs of the pilot signal generation unit are the same inputs of the control unit and are connected to the same address inputs of the multiplexer, the output of which is connected to the first input of the OR element, the output of which is the output of the control unit and through The ENT device is NOT connected to the first input of the NAND element whose output is connected to the first inputs of the first and second AND elements, the output of the second AND element is connected to the first input of the EXCLUSIVE OR element, the output of which is connected to the second input of the OR element, the first information input of the multiplexer is combined with own second information input, which is the fourth input of the control unit and connected to the first input of the threshold element, the output of which is connected to the second input of the EXCLUSIVE OR element, the third information the multiplexer input is combined with its own fourth information input, which is the fifth input of the control unit, which is connected to the second input of the threshold element, the fifth information input of the multiplexer is the sixth input of the control unit, and is connected to the second input of the first-element element I, the output of which is the third input of the threshold element, the sixth information input of the multiplexer is the seventh input of the control unit and is connected to the fourth input of the threshold element; the output of the control generation unit Nogo signal coupled to a second input of the second element ; And AND through the delay element is connected; to the upop fy input of the element NAND. 3. The device according to PP. 1 and 2, that is, that the control signal forming node is made of two NOT elements, three (AND-NOT channels, EXCLUSIVE element: ШШ, two AND elements, the OR element of the zigger and the display element, the first input of the first The NAND element is the first input of the node that is connected to the first in the element EXCLUSIVE OR, and through the element is NOT connected to the first input of the second NAND element, the output of which is connected to the first input of the third NAND element and to the first input of the trigger, the first output of which is connected to the first input of the first And element, the output of which is connected to the display element and is the output of the node. TG,% S5 3S 37 38. .J (. the second input of the first AND-NOT element is the second input of the node and is connected to the second input of the second AND-NOT element and to the second input of the EXCLUSIVE OR element, the output of which is connected to the first input of the second AND element, the output of which is connected to the first input of the OR element, output which is connected to the second input of the trigger, the second output of which is connected to the second input of the second element AND, the third input of the second element NAND is the third input of the node and through the second element is NOT connected to the third input of the first NAND element, the output of which is connected to the second input of the OR element and to the second input of the third NAND element, output which is connected to the second input of the first element And and to the third input of the second element I.  55 "ABOUT s I five FIG. fie.2 to 5 / 10ku 33 J original CQpnjaffiffue ( dufnifUKOO; / Gwrry on & Sensor fault Lynl link failure N (1 / slra6nos / lb kona / ia mustache / proc / pos b eleven  one I FIG. О / Г7 di / JO / fOdd