DEVICE FOR CONTROLLING THE INTEGRITY OF CIRCUITS OF TECHNICALLY COMPLEX OBJECTS

Abstract

The utility model relates to the field of control and measuring equipment and can be used to monitor the integrity and quality of circuits (internal electrical installation) of complex technical objects, including nuclear power facilities, the fuel and energy complex, and the oil and gas industry. The objective of the utility model is to increase the operational reliability of the device by optimizing circuit design solutions and reducing the costs required to ensure it when monitoring the integrity of control, power, and communication circuits of technically complex objects. The device for monitoring the integrity of circuits of technically complex objects comprises a housing 1, LEDs for indicating the operation of the device, and is distinguished by the fact that a programmable logic controller 2 is introduced into it, including an external power supply unit 3 connected to a power interface 4, a central processor unit 5 electrically connected to a RAM unit 6, a ROM unit 7, a real-time unit 8,a first internal interface unit 9 capable of communicating with external devices via a wired digital data transmission interface 10, a second internal interface unit 11 capable of communicating with external devices via a wired digital data transmission interface 12, an internal bus unit 13 by means of which the programmable logic controller 2 is electrically connected via a power and data transmission bus 14 to the first external interface unit 15 capable of communicating with external devices via a wired digital data transmission interface 16, a second external interface unit 17 which is electrically connected to the data transmission unit 18 capable of communicating with external devices via a radio frequency data transmission interface 19, a first DC power input unit 20 connected to the power interface 4 and the second external interface unit 17,n-number of discrete DC output units 21, the outputs of which are connected to the monitored circuits 22, m-number of discrete DC input units with circuit integrity monitoring 23, the inputs of which are connected to the monitored circuits 22, a second DC power input unit 24 connected to the power interface 4, discrete DC output units 21 and discrete DC input units with circuit integrity monitoring 23, wherein each of the units is provided with LEDs for indicating the operation and status of the device, and the units themselves are made removable. The introduction into the design of the device of a central processor unit, a RAM unit, a ROM unit, and also an internal bus unit, which are connected to other functional units of the device through a power and transmission bus leads to a reduction in time and, as a consequence,Reducing the cost of implementing integrity monitoring for complex technical facilities. Design optimization is achieved by incorporating a real-time unit, internal interface units, and external interface units with wired and radio-frequency interfaces. Each unit is equipped with LEDs to indicate operation and device status, and these units are removable. The addition of an external power supply unit, a first DC power input unit, and a second DC power input unit ensures reliable and stabilized power supply for the internal units. All this ensures the desired technical result in terms of increased operational reliability. Thus, the proposed technical solution leads to increased operational reliability by optimizing circuit design solutions and reducing the costs required to ensure it during control circuit integrity monitoring.power supply and communication of technically complex objects. 1 ill.,

Description

[0001] Field of technology to which the utility model belongs

[0002] The utility model relates to the field of control and measuring equipment and can be used to monitor the integrity and quality of circuits (internal electrical installations) of complex technical facilities, including nuclear power facilities, fuel and energy complex, and the oil and gas industry.

[0003] Technology Level

[0004] A device for testing multi-core cables is known, which includes a measuring device and a probe connected to the measuring input of the measuring device, and the measuring end of the probe is alternately connected to the contacts of the connector of the near end of the long multi-core cable being tested.A distinctive feature is that an extended flexible process cable is additionally introduced into the device, one end of which is permanently connected to the output of the measuring device, and the second end is connected to the contacts of the connector of the remote end of the monitored cable with the possibility of short-circuiting all the contacts of this connector between themselves, while the length of the process cable provides access from the measuring device located at the near end of the monitored cable to the connector at the remote end of the cable without changing the standard position of the monitored extended multi-core cable on the ground as part of the corresponding technical system (RU patent for utility model No. 187672, U1, G01R 31 / 00, Device for monitoring multi-core cables. Published: 03 / 14 / 2019).

[0005] A known method is based on the use of an automated software-controlled monitoring system, comprising a computer connected to it via an interface bus. A switch with at least two independent switching fields and a measuring instrument are used to measure the electrical connection parameters between the product's connector contacts and the insulation resistance between the product's independent electrical circuits. The switch's field channels are connected to the product's connector contacts using two process harnesses and replaceable adapters.In this case, the complete check of the electrical connections of the products is divided into specific procedures for checking the connections of successively connected connectors of the product in relation to other successively connected connectors, electrically connected to the given connector, taken as a reference for each specific check procedure (RU patent for invention No. 2554658, C1, G01R 31 / 00, Method of automated checking of electrical circuits of complex technical products. Published: 06 / 27 / 2015).

[0006] A device is known for testing wires of multi-core cables, comprising a power source, a clock generator, the output of which is connected to the input of a counter, first and second decoders, the input of the first decoder is connected to the output of the counter, and the outputs of the decoders are connected to the inputs of LED indicators, respectively, the first and second, two connectors for connecting adapter connectors of the cable (harness) being tested, and a multiplexer, the contacts of one of the connectors are connected to the outputs of the first decoder, and the contacts of the second connector are connected to the inputs of the multiplexer, to the control input of which the output of the clock generator is connected, and the input of the second decoder is connected to the output of the multiplexer (RU patent for utility model No. 83851, U1, G01R 31 / 00, Device for testing wires of multi-core cables. Published: 20.06.2009).

[0007] An automated device is known for monitoring electrical circuits of complex technical objects, comprising a computer, as well as an electrical circuit parameter meter and a low-voltage switch, including two switching matrices when monitoring electrical circuits without active elements, or an electrical circuit parameter meter, a software-controlled source of test actions and a low-voltage switch, including four switching matrices when monitoring electrical circuits with active elements, a high-voltage measuring device, a high-voltage switch, a process harness for connecting to the contacts of electrical circuits of the tested object and a high-voltage process harness for connecting to the contacts of high-voltage electrical circuits of the tested object, wherein the inputs and outputs of the computer are connected through an interface bus to the control inputs of the source of test actions, the electrical circuit parameter meter, the low-voltage switch,high-voltage measuring device and high-voltage switch, the code outputs of the electrical circuit parameter meter and the high-voltage measuring device are connected to the computer via an interface bus, the input and housing of the electrical circuit parameter meter are connected to the common points of the first and second switching matrices of the low-voltage switch, the output and housing of the test source for monitoring electrical circuits with active elements are connected to the common points of the third and fourth switching matrices of the low-voltage switch, the output and input of the high-voltage measuring device are connected to the common points of the first and second switching matrices of the high-voltage switch, a process harness is connected to the contacts of the switching matrices of the low-voltage switch, ensuring the connection of the device to the contacts of the electrical circuits of the tested object,a high-voltage process harness is connected to the contacts of the switching matrices of the high-voltage switch, which ensures the connection of the device to the contacts of the high-voltage electrical circuits of the controlled object (RU patent for invention No. 2534387, C1, G01R 31 / 02, Method of automated control of electrical circuits of complex technical products and device for implementing this method. Published: 27.11.2014).,

[0008] An automated electrical connection monitoring system is known, implemented in the form of functionally distributed units: a control personal computer that sets the operating modes of the system and processes and outputs the obtained monitoring results; a preliminary test information processing unit, galvanically separate from the PC, consisting of a control unit, an R / U conversion unit, and N switching units, the number of which depends on the required number of monitored points, which is theoretically unlimited, and each switching unit contains M testing channels, each of which is a structurally complete element and contains from 64 to 256 channels (RU patent for utility model No. 111683, U1, G01R 31 / 00, Automated electrical connection monitoring system. Published: 20.12.2011).

[0009] The closest technical solution adopted as a prototype is a device for testing the integrity control circuits of actuator circuits, consisting of a housing, on the panel of which there is a button for turning on the device, a block for connecting and fixing the tested optical module, LEDs for indicating the operation of the device, a TP4056 module with a unified micro-USB connector for connecting a charger, a lithium-ion galvanic cell for powering the device, an MC34063 microcircuit for converting direct voltage, an LM317 microcircuit for stabilizing direct current (RU patent for utility model No. 203952, U1, G05B 1 / 00, Device for testing integrity control circuits of actuator circuits. Published: 04 / 28 / 2021).

[0010] The disadvantages of analogs and the prototype are low operational reliability, due to design solutions and increased costs for ensuring it when monitoring electrical circuits.

[0011] The objective of the utility model is to increase the operational reliability of the device by optimizing circuit design solutions and reducing the costs required to ensure it when monitoring the integrity of control, power, and communication circuits of technically complex objects.

[0012] The stated problem is solved by creating a device for monitoring the integrity of circuits of technically complex objects, which consists of a housing and LEDs for indicating the operation of the device and is distinguished by the fact that a programmable logic controller is introduced into it, including an external power supply unit connected to the power interface, a central processor unit connected electrically to a RAM unit, a ROM unit, a real-time unit, a first internal interface unit having the ability to communicate with external devices via a wired digital data transmission interface, a second internal interface unit having the ability to communicate with external devices via a wired digital data transmission interface, an internal bus unit, by means of which the programmable logic controller is electrically connected to the first external interface unit via a power and data transmission bus,having the ability to communicate with external devices via a wired digital data transmission interface, a second external interface unit that is electrically connected to the data transmission unit that has the ability to communicate with external devices via a radio frequency data transmission interface, a first DC power input unit connected to the power interface and a second external interface unit, n-number of DC discrete output units whose outputs are connected to the monitored circuits, m-number of DC discrete input units with circuit integrity monitoring whose inputs are connected to the monitored circuits, a second DC power input unit connected to the power interface, DC discrete output units and DC discrete input units with circuit integrity monitoring, wherein each of the units is provided with LEDs for indicating the operation and state of the device,and the blocks themselves are removable.

[0013] The inclusion of a central processing unit, RAM, ROM, and an internal bus unit, all connected to other functional units via a power and data bus, reduces the time and, consequently, the cost of implementing integrity monitoring for complex technical circuits. Design optimization is achieved by incorporating a real-time unit, internal interface units, and external interface units with wired and RF interfaces. LEDs are provided to indicate the operation and device status of each unit, and these units are removable. The inclusion of an external power supply unit, a first DC power input unit, and a second DC power input unit ensures reliable and stabilized power supply for the internal units.All this ensures the achievement of the required technical result in terms of increasing operational reliability.

[0014] The functional diagram of the device for monitoring the integrity of circuits of technically complex objects is shown in Fig. 1, and is configurable for each specific object of operation. A programmable logic controller 2 is installed in the housing 1 of the device. The programmable logic controller (PLC) 2 consists of an external power supply unit 3 connected to the power interface 4 and designed to stabilize the supply voltage on the PLC 2, a central processor unit 5 controlling the operating algorithms of the device and processing the received data on monitoring the integrity of circuits, a RAM unit 6 for processing the received data on monitoring the integrity of circuits, a ROM unit 7 for storing operating algorithms and the received data on monitoring the integrity of circuits, a real-time unit 8 necessary for recording the chronometric data of the device, the first (9) and second (11) internal interface units,by means of which the PLC 2 can be connected via wired digital data transmission interfaces (10 and 12, respectively) to external devices (for example, a PC) and the internal bus unit 13. By means of the internal bus unit 13, the PLC 2 is electrically connected via the power supply and data transmission bus 14 to external units, namely with the first external interface unit 15, by means of which the device can be connected via a wired digital data transmission interface 16 to an external device (for example, a monitoring and control system); with the second external interface unit 17, which is electrically connected to the data transmission unit 18, by means of which the device has the ability to communicate with external devices (for example,monitoring and control system) via radio frequency data transmission interface 19; with the first DC power input unit 20 connected to the power interface 4 and the second external interface unit 17 and intended to stabilize the supply voltage of the second external interface unit 17 and the data transmission unit 18; with n-number of DC discrete output units 21, the outputs of which are connected to the monitored circuits 22 directly or using special process connectors and from the output of the units 21 generated discrete signals are fed to the monitored circuits 22; with m-number of DC discrete input units with circuit integrity monitoring 23, the inputs of which are connected to the monitored circuits 22 directly or using special process connectors and the units 23 generate data on the integrity of the monitored circuits 22; with the second DC power input unit 24 connected to the power interface 4,Discrete DC output units 21 and discrete DC input units with circuit integrity monitoring 23, designed to stabilize the supply voltage of the said DC input and output units. Each of the above units is equipped with LEDs to indicate the operation and status of the device. Moreover, all functional units of the proposed device are removable, allowing the device to be configured for each specific application.

[0015] The device for monitoring the integrity of circuits of technically complex objects operates as follows.

[0016] The sequence of operations for monitoring the integrity of circuits is determined by the control program, previously entered into the ROM block 7 of the programmable logic controller 2 via the first (9) or second (11) internal interface block and defined for each specific operating object. In this case, the control program contains a set of data from connection tables describing the electrical connections of each output of the discrete DC output blocks 21 with the inputs of the discrete DC input blocks with circuit integrity monitoring 23 through the monitored circuits 22 (e.g., cables at the operating object).

[0017] If the task at the operating facility is to monitor the integrity of circuits, for example, only one type of cable, then before starting the implementation of the monitoring procedure, the following preparatory actions are performed:

[0018] 1) the operator (based on a priori information about the expected location of the circuit defect or on the basis of mandatory operations to control the circuits before operating the controlled object) connects the controlled circuits 22 directly or using special technological connectors to the outputs of the discrete DC output units 21 and the inputs of the discrete DC input units with circuit integrity monitoring 23.In this case, it is not necessary to connect different ends of the monitored circuits (cables) directly to the outputs of the DC discrete output units 21 and the inputs of the DC discrete input units with circuit integrity monitoring 23, since a plug connector can be connected to one of the ends of the monitored circuits (for example, to the remote end of the monitored cable), and the free one (for example, the nearest end of the monitored cable) is connected to a special technological connector or directly to the outputs of the DC discrete output units 21 and the inputs of the DC discrete input units with circuit integrity monitoring 23;.

[0019] 2) The operator supplies power to the power interface 4.

[0020] After power is supplied to the power interface 4, the stabilized supply voltage is supplied through the external power supply unit 3 to the PLC units 2, through the first DC power input unit 20 to the second external interface unit 17 and the data transmission unit 18, through the second DC power input unit 24 to the DC discrete output units 21 and the DC discrete input units with circuit integrity monitoring 23, which leads to the switching on of the said units and, accordingly, the device as a whole. In this case, interfacing with an external device (e.g., a monitoring and control system) occurs via the wired digital data transmission interface 16 or the radio frequency data transmission interface 19 through the established communication protocols stored in the ROM unit 7 and operating according to the specified algorithms of the control program.

[0021] PLC 2, by means of the central processor unit 5 and the RAM unit 6, according to the specified algorithms of the control program stored in the ROM unit 7, tests all units of the device through the internal bus unit 13 with the power and data transmission bus 14 and issues a signal about readiness for operation both by LEDs on the units (blinking or constant glow) and by a message to an external device (for example, a monitoring and control system) by means of data transmission either through the first external interface unit 15 and the wired digital data transmission interface 16, or through the second external interface unit 17, the data transmission unit 18 and the radio frequency data transmission interface 19.

[0022] Depending on the tasks at the operating facility, the process of monitoring the integrity of circuits 22 between the outputs of the discrete DC output units 21 and the inputs of the discrete DC input units with circuit integrity monitoring 23 can:

[0023] start automatically cyclically by means of the central processor unit 5, the RAM unit 6 through the internal bus unit 13 with the power and data bus 14 of the programmable logic controller 2 under the control of the control program previously entered into the ROM unit 7;

[0024] be initiated by a request received through the first external interface unit 15 and the wired digital data transmission interface 16, or through the second external interface unit 17, the data transmission unit 18 and the radio frequency data transmission interface 19 from an external device (for example, a monitoring and control system) and is started cyclically by means of the central processor unit 5, the RAM unit 6 through the internal bus unit 13 with the power supply and data transmission bus 14 of the programmable logic controller 2 under the control of the control program previously entered into the ROM unit 7.

[0025] In each monitoring cycle, the state is checked between the next output of the DC discrete output units 21 (the output numbers can be specified in sequence, for example, according to the circuit markings on the cable contacts) and the next input of the DC discrete input units with circuit integrity monitoring 23, and the following actions are performed:

[0026] 1) the central processor unit 5 and the RAM unit 6, via the power supply and data transmission bus 14 through the internal bus unit 13, issue a control signal to the discrete DC output units 21;

[0027] 2) each output of the discrete DC output blocks 21, corresponding to the contact number of the controlled circuits 22 specified by the control program, is alternately set to the state “1” (one), while the LED on the blocks 22 lights up, signaling the operation and connection of each specific output;

[0028] 3) the electrical signal (corresponding to the state “1” of the output of the discrete DC output units 21) from the activated outputs of the discrete DC output units 21 is alternately sent to the controlled electrical circuits 22;

[0029] 4) the electrical signal from the outputs of the discrete DC output blocks 21 is distributed through all monitored circuits 22 connected to these outputs of blocks 21 (both through standard circuits and through false circuits, including circuits that are formed in the event of short circuits or breaks in the electrical installation of monitored circuits 22);

[0030] 5) the electrical signal from the specified outputs of the discrete DC output blocks 21 is sent via the monitored circuits 22 to the inputs of the discrete DC input blocks with circuit integrity monitoring 23 (if there is integrity of the electrical connections in the monitored circuits 22);

[0031] 6) the electrical signal received at the inputs of the discrete DC input units with circuit integrity monitoring 23 sets these inputs to the state "1" (one), while the LED on the units 23 lights up (for example, with a constant green glow), signaling the integrity of the monitored circuit 22, and the units 23 themselves generate input status codes (reflecting the contact numbers of the monitored circuits 22 connected to the units 23). The generated input status code is sent via the power and data bus 14 through the internal bus unit 13 to the central processor unit 5 and the RAM unit 6;

[0032] 7) the input status code received by the central processor unit 5 and the RAM unit 6, generated in the discrete DC input units with circuit integrity monitoring 23 under the action of the signal from the activated outputs of the discrete DC output units 21, is analyzed by the control program for compliance with the connection tables describing the electrical connections of each output of the discrete DC output units 21 with the inputs of the discrete DC input units with circuit integrity monitoring 23 through the monitored circuits 22. Based on the analysis results, the following situations are identified:

[0033] the input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with the number "j" of the monitored circuit 22, is in the state "1" (one), while the LED on the units 23 lights up (for example, with a steady green glow), signaling the integrity of the monitored circuit 22. According to the connection table, this input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with the number "j" of the monitored circuit 22, must have a connection (state "1" (one) with the activated output of the discrete DC output unit 21 corresponding to the contact with the number "j" of the monitored circuit 22. In this case, the monitoring program records the integrity of the monitored circuit 22 corresponding to the contact with the number "j" between the specified output of the discrete DC output unit 21 and the input of the discrete DC input unit with integrity monitoring 23, i.e.the serviceability of the electrical installation of the controlled connection is recorded;

[0034] The input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with the number "j" of the monitored circuit 22, is in the state "0" (zero) (in this case, the LED on the units 23 lights up, for example, with a steady red glow, signaling a defect in the monitored circuit 22). According to the connection table, this input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with the number "j" of the monitored circuit 22, must have a connection (in the state "1" (one) with the activated output of the discrete DC output unit 21 corresponding to the contact with the number "j" of the monitored circuit 22. In this case, the monitoring program records the absence of integrity of the corresponding contact with the number "j" of the monitored circuit 22 between the specified output of the discrete DC output unit 21 and the input of the discrete DC input unit with integrity monitoring 23, i.e.records a defect in electrical installation in the form of a break in the controlled connection;

[0035] The input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with the number "j" of the monitored circuit 22, is in the state of "0" (zero) or "1" (one), and the other input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with a certain number "i" of the monitored circuit 22, is in the state of "1" (one) (with the corresponding lighting of the signal LEDs). However, according to the connection table, the input of the discrete DC input unit with integrity monitoring 23, corresponding to the contact with a certain number "i" of the monitored circuit 22, should not have a connection (the state of "1" (one)) with the activated output of the discrete DC output unit 21, corresponding to the contact with the number "j" of the monitored circuit 22.In this case, the monitoring program records the presence of a defect (extra connection or short circuit) in the integrity of the corresponding contact with number “j” and contact with number “i” of the monitored circuits 22 between the specified output of the discrete DC output block 21 and the input of the discrete DC input block with circuit integrity monitoring 23;.

[0036] 8) the monitoring process continues until all contacts of the monitored circuits 22 have been checked, after which it is completed. The results of the circuit integrity monitoring are recorded in the ROM block 7 and transmitted as a message to an external device (e.g., a monitoring and control system) by means of data transmission either through the first external interface block 15 and the wired digital data transmission interface 16, or through the second external interface block 17, the data transmission block 18 and the radio frequency data transmission interface 19, and are also visible visually by means of LED indication. The operating time is recorded by the real-time block 8;

[0037] 9) After completion of the control procedures, the controlled circuits 22 are disconnected from the outputs of the discrete DC output units 21 and the inputs of the discrete DC input units with circuit integrity monitoring 23.

[0038] If the operating facility does not have the task of checking for a defect in the form of an extra connection or short circuit (for example, the design of the circuits (cable) excludes short circuits), then the process of monitoring the condition of its circuits 22 according to the above-mentioned paragraph 2 by the proposed circuit integrity monitoring device is performed simultaneously, and not sequentially, which significantly reduces the time for monitoring the integrity of the circuits.

[0039] If the task at the facility involves monitoring the integrity of circuits, for example, several types of cables, the operator sequentially connects the monitored circuits 22 using special process connectors to the outputs of the discrete DC output units 21 and the inputs of the discrete DC input units with circuit integrity monitoring 23. The monitoring process for each cable type is initiated by a request from an external device and then carried out according to the principle described above. Identification of the connected cables can be performed manually on an external device or identified by the discrete DC output units 21 and the discrete DC input units with circuit integrity monitoring 23 based on the configuration of the connected cables.

[0040] Based on the results of circuit integrity testing, the proposed device provides a complete assessment of the condition of the electrical installation in the monitored circuits (in places of suspected electrical installation defects) in one pass.

[0041] The data obtained during the testing process by the proposed device are exhaustive for eliminating the identified defects, since they contain information about the locations of the defects (between which outputs of the discrete DC output units 21 and inputs of the discrete DC input units with circuit integrity monitoring 23 there are defects in the electrical connections) and the types of defects (breaks or short circuits).

[0042] Thus, the proposed technical solution leads to an increase in the operational reliability of the device by optimizing circuit design solutions and reducing the costs required to ensure it when monitoring the integrity of control, power, and communication circuits of technically complex objects.

Claims

A device for monitoring the integrity of circuits of technically complex objects, comprising a housing, light-emitting diodes for indicating the operation of the device, characterized in that a programmable logic controller is introduced into it, including an external power supply unit connected to a power interface, a central processor unit electrically connected to a RAM unit, a ROM unit, a real-time unit, a first internal interface unit capable of communicating with external devices via a wired digital data transfer interface, a second internal interface unit capable of communicating with external devices via a wired digital data transfer interface, an internal bus unit by means of which the programmable logic controller is electrically connected via a power and data transfer bus to the first external interface unit capable of communicating with external devices via a wired digital data transfer interface,a second external interface unit that is electrically connected to a data transmission unit capable of communicating with external devices via a radio frequency data transmission interface, a first DC power input unit connected to the power interface and a second external interface unit, n-number of DC discrete output units whose outputs are connected to the circuits being monitored, m-number of DC discrete input units with circuit integrity monitoring whose inputs are connected to the circuits being monitored, a second DC power input unit connected to the power interface, DC discrete output units and DC discrete input units with circuit integrity monitoring, wherein each of the units is provided with LEDs for indicating the operation and status of the device, and the units themselves are removable.

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