RU102393U1 - CONTROL COMPLEX - Google Patents

Abstract

 1. A control and verification complex containing a programmable power supply, a personal computer with software, an interface and a switching bus, characterized in that the personal computer is connected to the programmable power sources and to a modular unit containing a simulation and measurement unit through an interface converter and an interface bus temperature sensor signals, input voltage measuring unit, potential output signal block, discrete input / output block, forming unit precision voltages and digital code sequence conversions, an amplifier block, a digital-to-analog voltage converter, a relay switch, a capacitance meter and a current generator, while all the blocks and their modules are connected via a switching bus to each other, with programmable power supplies and with a connector connecting equipment. ! 2. The control and verification complex according to claim 1, characterized in that the unit for simulating and measuring signals of temperature sensors comprises a module of a 4-channel resistance meter and a module of a 2-channel thermoEMF generator. ! 3. The control and verification complex according to claim 1, characterized in that the input voltage measuring unit comprises a 36-channel analog-to-digital voltage converter module, a 36-channel voltage normalizer module, a relay switch module with 40 normally open contacts and a load resistance module 30 entrances. ! 4. The control and verification complex according to claim 1, characterized in that the block of output potential signals contains relay switch modules

Description

The utility model relates to measuring equipment, namely, devices for monitoring and measuring the electrical parameters of electrical equipment, in particular, to perform work on checking and adjusting the onboard equipment of Mi-8, Mi-17 helicopters, etc.

Currently, the control and measurement of electrical parameters of the devices of the Mi-8, Mi-17, Mi-171 helicopters and others are carried out in accordance with the “Technical Operation Manual” using control and measuring equipment in the form of DC and AC voltmeters and ammeters , output voltage meters, and others. The power of the equipment under test and instrumentation is provided from workshop power sources.

A disadvantage of the known solution is its high complexity, since for measurements it is necessary to use a large number of individual devices and the entire verification process is carried out manually. A significant drawback is also the low accuracy of measurements due to the influence of the human factor and the use of obsolete equipment.

The closest in technical essence and the achieved result of the existing analogues is the solution; described in RF patent No. 2257604 "Automated complex for monitoring and diagnostics", 2003, patent holder - Open Joint-Stock Company "Head Production and Technical Enterprise" Granit "(RU). The device according to patent No. 2257604 contains a programmable power supply, a personal computer with software, interface and switching buses and provides the ability to control the quality of replaceable REA nodes, diagnose malfunction of replaceable REA nodes, monitor and diagnose high-frequency blocks and nodes of an object control.

However, this solution does not allow the formation and measurement of temperature sensor signals, measure capacitance, generate current signals, does not provide the ability to generate and measure precision (especially accurate) signals.

The objective of the claimed solution is to expand the functionality and increase the accuracy and reliability of measurements.

This goal is achieved due to the fact that in the well-known test complex containing a programmable power supply, a personal computer with software, interface and switching buses, a personal computer through an interface converter and interface bus is connected to programmable power sources and to a modular unit containing block for simulating and measuring signals of temperature sensors, block for measuring input voltages, block for output potential signals, block for input / output discrete signals, a unit for generating precision voltages and converting digital code sequences, an amplifier unit, a digital-to-analog voltage converter, a relay switch, a capacitance meter and a current generator, while all the units and their modules are connected to each other via a switching bus, programmable power supplies and with a connector for connecting equipment. And also due to the fact that the unit for simulating and measuring signals of temperature sensors contains a 4-channel resistance meter and a 2-channel thermo-EMF generator; the input voltage measuring unit contains a 36-channel analog-to-digital voltage converter, a 36-channel voltage normalizer, a relay switch for 40 normally open contacts and a load resistance module for 30 inputs; the block of output potential signals contains relay switches for 27 switching contacts and a relay switch for 40 normally open contacts; the block of input / output discrete signals contains a relay switch for 40 normally open contacts and a digital input module for 40 channels; the precision voltage generation and digital code sequence conversion unit comprises a test voltage module, code sequence conversion module (two-frequency code) and code sequence conversion module (code returning to zero)

The technical result from the use of the claimed solution is that due to the use of the block-modular architecture of the complex, in which the interface and switching buses, being a structural element, combine all the modules, it becomes possible to set the corresponding effects on the test objects and take characteristics from them. Inside the groups, the modules and blocks are interconnected electrically using a patch bus. Each group has individual functionality. The personal computer through the interface converter sets the commands for the modules in order to generate test signals at their outputs. The generated test signals through the switching bus are fed to the control object. The response signal through the switching bus enters the appropriate modules, which convert the signal and return via the interface bus and interface converter to a personal computer

The basis of the stand is a control module, consisting of:

- modules providing pairing, primary conversion and processing of signals from the tested object;

- modules providing generation, conversion and transmission of test signals to the object being checked;

- power supplies that provide power (including uninterrupted) of the internal modules of the complex and the object being checked;

- a personal computer (PC) that provides control of the complex, the execution of verification algorithms, storage and further processing of the information received.

- a panel of connectors that provides connection to the stand of the object under test.

The claimed combination of features is not known to the applicant from available sources of information.

The claimed solution is illustrated by drawings, where:

Figure 1 presents a functional diagram

The claimed solution is illustrated by a diagram showing a control module 1, which includes a modular unit 2, a panel 22 with connectors for connecting equipment, a programmable power supply 38 AC 115 V / 400 Hz, programmable power supply 39 DC 27 V / 19 A, interface converter 40 (RS 232/422/485 to USB, 8-channel), service power supply 41 direct current 27 V / 10 A, service power supply 42 direct current, ± 150 V / 4 A, uninterruptible power supply power supply 43 alternating current (220 V), personnel th computer 44 and surge protector 45. A personal computer 44 with software, through an interface converter 40 and interface bus 46, is connected to programmable power supplies 38 and 39 and to a modular block 2 containing a block of precision actions and measurements 3, an input voltage measuring unit 4 , block of output potential signals 5, block of input / output discrete signals 6, block for the generation of precision voltages and conversion of digital code sequences 7, block of amplifiers 8, digital-to-analog converter zovatel voltage 15, the relay switch 21, capacitance meter 26 and current generator 27 which via a switching bus connected to each other, with the programmable power supply and the equipment connection slot.

The structure of the modular unit 2 includes: a unit of 3 precise actions and measurements, containing a 4-channel resistance meter 9 (for resistance thermometers) and a 2-channel thermo-EMF generator 10 (thermocouple signal generator); input voltage measuring unit 4 consisting of a 36-channel analog-to-digital voltage converter 11 (input range ± 10 V), a 36-channel voltage normalizer 12 (for signals processed by the M3 module), a relay switch 13 to 40 normally open contacts, and module 14 load resistances for 30 inputs (5 W per channel); block 5 of potential signals containing relay switches 16 and 18 to 27 switching contacts and relay switch 17 to 40 normally open contacts, block 6 of potential signals containing relay switch 19 to 40 normally open contacts and digital input module 20 to 40 channels (potential input ); a unit 7 for generating test voltages and recording code digital serial data, comprising a unit for test voltages 23, a unit for converting code sequences (two-frequency code), and a unit for converting code sequences 25 (code returning to zero); an amplifier block 8 containing low-frequency amplifiers 28-37.

In addition, the modular unit contains a 40-channel digital-to-analog voltage converter 15 (output range ± 10 V), a relay switch 21 with 27 switching contacts, a capacitance meter 26, and a current generator 27.

All groups of modules are combined in a single structural unit and have a connection between themselves and external units (PC, equipment connection connector and power sources) via an interface bus 46 and a connection bus 47.

Block 3 is designed to simulate signals from thermocouples (TP) and measure the resistance of resistance thermometers (TC). Block 4 contains a module for normalizing input signals, a module of load resistances, and a module for switching load resistances to the analog channel line. Blocks 5 and 6 are designed to generate discrete signals at the output of the test bench (“0” - incoming current / “1” - outgoing current) up to the DC voltage generated by the source 39. The outputs of block 5 also have a third state - open circuit. Block 7 is designed to generate precision voltages at the output 22 of the module 23, and record and convert received from the object of control of digital code sequences by modules 24 and 25, with subsequent transmission of data to the interface converter 40. Block 8 is designed to amplify the signal generated by the module 15, for subsequent issuance of it to the test object.

The modules and blocks, performing their functions, exchange data and receive control commands from the PC via the interface bus 46. Bus 46 is a physical communication line according to the RS232 and RS485 interface standards. Bus 46 is divided into independent communication lines uniting modules into groups. Data exchange between a PC and groups of modules or blocks is carried out on these lines through a multi-channel converter of RS232 / 422/485 interfaces to a USB interface.

Switch bus 47 is a structural element that communicates between the modules and combines the modules into functional blocks. Each group of modules of blocks 3-8 forms interface lines in the bus 46, these lines are connected to the personal computer 44 via the interface converter 40 and thus communicate with the computer. Also, via bus 46, power sources 38 and 39 are connected to a PC, generating voltage, while source 38 generates a voltage of 115 V / 400 Hz, which is fed through bus 47 to panel 22 with connectors for connecting equipment, and source 39 generates a voltage of 27 V , which is also fed through the bus 47 to the panel 22 and to the modules. Power supplies 41, 42, and 43 power the PC and all modules and groups of modules. The power source 41 generates a voltage for operation of all modules included in the modular unit, and the power source 42 generates a voltage for operation of the modules included in group 8 of amplifiers.

The control module 1 is connected to an industrial network 220 V / 50 Hz through a line filter 16A, which in turn distributes power to the power sources 38-43 and interface converter 40. The equipment under test is connected via panel 22.

The design of the stand allows you to increase its functionality for testing various classes of instrumentation both at the hardware level, by adding various measurement modules, and at the software level, by programming testing algorithms.

In PC 44, unique software (hereinafter referred to as software) is installed, which controls all the modules and blocks of the complex according to a specific algorithm. The software installed on the PC allows you to perform:

- selection of the mode of operation of the complex;

- management of inspections and display of control results;

- Modeling the functioning of the equipment under test;

- control of the correct connection of the device under test;

- automatic testing of part of the complex modules;

- checking the parameters of the connected device in an automated and manual mode;

- adjusting the parameters of the connected device in manual mode;

- maintaining an information base for inspections and repairs of devices;

- generation of reports on test results and their printing.

The control and verification complex performs the following functions:

- carries out verification in accordance with the current technological documentation;

- allows you to adjust the parameters;

- performs mathematical processing of parameters and remembers the test result;

- generates reports of production and control documentation on the results of repairs and testing;

- collects statistical data on all controlled parameters of the tested equipment;

- performs processing of statistical data, followed by prediction of failures of the equipment under test;

- provides an opportunity for the operator to determine all malfunctions by signs of a defect;

- organizes the collection, processing, accumulation and storage of data.

The control and verification complex has several operating modes, including:

1) automatic verification mode;

2) manual verification mode;

3) the mode of integrated control of the health of the complex.

The work of the complex is based on the measurement of direct voltage; measuring AC voltage; measuring direct current; AC measurement resistance measurement; the formation of single-phase / three-phase voltages 0 ... 150 V, frequency 400 Hz; the formation of a constant voltage of 27 V; measuring the reliability of a contact system.

When the complex is operating, a set of test signals is formed in accordance with the technical conditions for the controlled equipment. Each set of test signals corresponds to a set of reference signals at the outputs of the objects of control (response signals to the submitted tests). Data on the reference values of the parameters of the sets of test signals and the parameters corresponding to them of the reference response signals are entered into the computer database. In the future (when monitoring the corresponding control objects), the tests are entered into the corresponding modules of block 2 before the control starts. Then, in accordance with the algorithm for checking the control object, the computer program initializes the test signals at the outputs of the corresponding modules of block 2, and the response signal parameters (obtained using the corresponding modules) are compared with the reference values previously entered into the computer database when programming tests. If the deviations of the measured parameters from the reference are within the established tolerances, the control object is considered suitable. If the measured parameters deviate from the tolerances, the control object is recognized as faulty and fault diagnostics are performed.

Before checking the next object of control, the operator on the PC 44 selects a program that corresponds to a specific test mode. Through the interface converter 40, the personal computer 44 sets commands for the modules in order to generate test signals at their outputs. The generated test signals through the switching bus 47 are supplied through the connector connecting equipment 22 to the next object of control. The response signal through the connector 22 and the switching bus 47 is supplied to the respective modules, which convert the signal and return via the interface bus 46 and the interface converter 40 to the personal computer 44.

The complex provides the functions of calibration of devices in accordance with the current regulatory documentation, collection, processing, accumulation and storage of test results, output of test results, maintaining a database for each tested device. All measured values using the software for each type of device are displayed on the monitor screen, and are also stored in the database for this type of device and can be used to verify its operability during operation of the device.

Claims (6)

1. A control and verification complex containing a programmable power supply, a personal computer with software, an interface and a switching bus, characterized in that the personal computer is connected to the programmable power sources and to a modular unit containing a simulation and measurement unit through an interface converter and an interface bus temperature sensor signals, input voltage measuring unit, potential output signal block, discrete input / output block, forming unit precision voltages and digital code sequence conversions, an amplifier block, a digital-to-analog voltage converter, a relay switch, a capacitance meter and a current generator, while all the blocks and their modules are connected via a switching bus to each other, with programmable power supplies and with a connector connecting equipment. 2. The control and verification complex according to claim 1, characterized in that the unit for simulating and measuring signals of temperature sensors comprises a module of a 4-channel resistance meter and a module of a 2-channel thermoEMF generator. 3. The test complex according to claim 1, characterized in that the input voltage measuring unit comprises a 36-channel analog-to-digital voltage converter module, a 36-channel voltage normalizer module, a relay switch module with 40 normally open contacts and a load resistance module for 30 entrances. 4. The control and verification complex according to claim 1, characterized in that the block of potential output signals contains relay switch modules with 27 switching contacts and a relay switch module with 40 normally open contacts. 5. The control and verification complex according to claim 1, characterized in that the input / output discrete signal block comprises a relay switch module with 40 normally open contacts and a digital input module with 40 channels. 6. The control and verification complex according to claim 1, characterized in that the precision voltage generation and digital code sequence conversion unit comprises a test voltage module, code sequence conversion module (two-frequency code) and code sequence conversion module (code returning to zero).