Method of creating control-diagnostic tests
FIELD: information technology.
SUBSTANCE: in the method of creating control-diagnostic tests before creating the tests through digital shooting in optical range, pictures of the non-component side of the article with clear identification of types of radio components thereon and their position is obtained. For each combination of input test electrical signals, simultaneously with determination of standard values of parametres of electrical response signals from outputs of a standard sample of the article of the given type which is known to be fault-free, standard digital infrared images of the standard sample of the article of the given type are obtained through digital infrared video shooting, where the said infrared images display the differences between thermal conditions of the radio components in places where they are located on the fault-free standard sample of the article of the given type. The obtained data are entered into the computer data base of the control-diagnostic installation and are used for subsequent monitoring of correct operation and diagnosing faults in articles of the given type.
EFFECT: detection of faulty radio components without violating integrity of moisture-proof coating of the article, high efficiency and reliability of diagnosis.
5 cl, 2 dwg
The technical solution relates to the field of technical diagnostics, in particular to automated health monitoring and fault diagnosis of electronic equipment (REE) using automated testing and diagnostic facilities on the basis of computer technology and digital measuring equipment.
During the implementation of automated performance monitoring and fault diagnosis REA greater complexity amount of work on formation control and diagnostic tests. In order to reduce labor costs for preparation of the tests use different methods for automated formation diagnostic tests.
Closest to the claimed technical solution is the method of formation diagnostic tests in the patent RU No. 2261471 C1 (G06F 11/22, G05B 23/00, publ. 27.09.2005,, bull. No. 27), adopted for the prototype.
A known method of forming tests on patent RU 2261471 adopted for the prototype based on the formation of combinations of test input electrical signals with predetermined combinations of signals with predetermined sequences of input signals corresponding to the input signals during normal operation of the controlled products REA of the appropriate type when used as directed, as well as Opredelenie reference values of parameters of electric signals in response to outputs of the reference specimen REA and intermediate points of the reference specimen REA, listing combinations of values of the input test signal and the corresponding combinations of reference values of parameters of electric signals in response to outputs of the controlled products and intermediate points of the products in the database computer automated control and diagnostics installation formed a set of diagnostic tests, including necessary combination of input test signals and corresponding to these tests collectively, the reference values of the parameters of the response signals from outputs and intermediate checkpoint products used for health monitoring and fault diagnosis items REA of this type.
The advantage of this method of formation diagnostic tests, taken as a prototype, is the ability to automate the generation tests when used for these purposes, control and diagnostics installation and known-good (reference) full-scale specimen REA of this type (reference physical model of this type of product CEA).
The disadvantages of the known method of forming tests on patent RU 2261471 are the need to ensure a reliable electrical contact of the probe inputs of the control and diagnostic installation with intermediate points of electrical circuits articles of the Oia and the need for sequential traversal of all these points to generate tests Troubleshooting of the product.
This entails the destruction of the moisture-proof coating in intermediate points samples REA (diagnostic objects) to connect to these points inputs (probes) control and diagnostic facility, including in those places, where the results of the diagnosis will not be detected fault. The application of diagnostic tests generated by the prototype method requires sequential traversal of the intermediate control points from output to input diagnosed electric circuits product CEA, which complicates the procedure of formation diagnostic tests, and procedures for Troubleshooting and reduces productivity for the diagnosis of REA. In addition, high density mounting of radio electronic elements (REE) and high degree of integration of the element base REA (which is typical for current and future products REA) access probe control and diagnostic unit to the intermediate points of electrical circuits products REA in the process of formation diagnostic tests and diagnostics with the use of tests generated by the prototype method, is difficult. Reliable contact of the probe control and diagnostics installation is not provided due to the problematic nature of its fixing (especially for dense mounting REE). This reduces significantly the th generated tests and depth fault diagnosis using tests formed by the method prototype.
The purpose of the claimed technical solution is to eliminate the disadvantages of the prototype method, namely:
1) elimination of the need for contact probe diagnostic installation with intermediate points of electrical circuits products in the diagnosis of REA with the use of tests generated by the claimed method;
2) exception for unreasonable damage to the waterproof coating of controlled samples of the product CEA in the diagnosis of their faults using test generated by the claimed method;
3) improving the accuracy of fault diagnosis for modern and advanced types of products REA with high density mounting REE when using diagnostic tests, formed by the claimed method;
4) increase the productivity of formation diagnostic tests and subsequent fault diagnosis and repair products REA with the use of tests generated by the claimed method.
The claimed technical effect is achieved in that in the method of formation diagnostic tests based on the formation of combinations of test input electrical signals with predetermined combinations of signals with predetermined sequences of feeding these signals to the inputs pin is aliremove sample REA, and to determine the reference values of the parameters of electric signals in response to outputs reference a known good sample REA of this type used in the formation of the tests, before creating tests using digital photography in the optical range get a picture of the mounting side of the product CEA with clearly identified on the types of REE, their positional regulations and labeling, for each combination of input test electrical signals simultaneously with the determination of reference values of parameters of electric signals in response to outputs reference a known good sample REA of this type was produced using digital infrared video reference digital infrared image of the reference specimen REA this type showing differences in thermal regimes REE in their locations on the reference specimen REA of this type, with the steady electric modes REE, put the received data into the database computer control and diagnostics installation and use for subsequent testing and Troubleshooting products REA of this type.
In order to increase the reliability of forming the reference thermal images to further Troubleshooting when receiving heate what's images of the reference specimen REA take measures to exclude the influence of external optical and thermal radiation on the reference sample and the lens infrared cameras, used in the formation of a diagnostic test infrared image of the reference specimen REA. The exclusion of the influence of external radiation may be provided by the corresponding screening zone shooting, for example the use of removable shielding enclosures (tubes)that are installed wide party on the edges of the mounting surface of the reference specimen REA. The top (mouth) of the tube used for installing lens infrared cameras.
One of the reference infrared images obtained during the formation of the tests in the claimed method is digital infrared snapshot of the initial state of the reference specimen REA static when plugged in and when not feeding it the other input of the test influences.
The reference digital image of the reference specimen (CEA) in the optical range and the reference digital infrared images for the respective combinations of input test influences form with the same position so that the location of the images of the same REE on images in the optical range and heat portraits on the images in the infrared range can be combined when playing on the screen of the PC monitor, and the image marking type and constructive position REE simplified p is borku REE to replace defective REE, detected according to the results of fault diagnosis based on the reference infrared images of the product CEA obtained when forming the control and diagnostic tests for the claimed method.
Technical implementation of the claimed method of forming tests is illustrated in figure 1 and figure 2. Figure 1 shows the structural diagram of the automated control and diagnostics installation (which are generated tests)connected to the reference sample of the product CEA. Figure 2 explains the features of the relative position of the mounting surface REA and video cameras, as well as the principle of protection (shielding) from the side effects of radiation on the formation of the reference images of the product CEA.
In the composition of the control and diagnostic installation figure 1, is used to create, control and diagnostic tests for the claimed method (similar in composition to the plants for control and diagnostic products CEA, which must be used by the generated tests), includes:
- reference (known good) specimen 1 REA of the appropriate type, which are formed tests;
- set of 2 sources of input test signals (including power supply), the outputs are connected to the inputs of the reference specimen 1;
to elect meters 3 electrical parameters of the response signals;
Computer 4 control and diagnostics installation code the output of which is connected to the control inputs of the 2 sources of input test signals, and inputs connected to the code outputs 3 meters electrical parameters of the response signals and to output the digital video camera 5;
- digital camera 5, mounted on the reference specimen 1 REA (see figure 2) with replaceable casing (tube) 6, which provides protection for the reference sample 1 from exposure to external radiation, and provides a lens digital camera 5 at a distance "H" so that the reference specimen 1 with installed REE (integrated circuits, transistors, resistors, diodes, etc.) completely was out in the field shooting "α" of the camcorder lens 5.
After installation preparation 1 with regard to 2 to work and connect the reference sample 1 receive the reference digital image (in the optical range) products 1 dened REE. With this aim the unit at a time include digital video camera 5 in the optical range or a digital camera, providing the necessary clarity of the image mounting side of the product 1 so that the pictures clearly identified not only the type and position of each positional REE, but their markings is providing for them in the future to identify the diagnostic results for the selection of relevant working REE of the same type and with the same parameters. This will simplify the selection REE subsequent repair of the defective product samples REA on the results of fault diagnosis with tests generated by the claimed method.
If the marking of certain REE or accommodation REE carried out from two sides, you use reference images of the two sides of the test object.
The obtained digital image of the reference specimen 1 in the optical (visible) range standard interface (e.g. USB) is transmitted to the computer 4 and is saved in the database (in the test Suite for this type of product CEA). After that, the optical camera is more for this type of product CEA is not used), and instead, according to figure 2 is mounted infrared digital video camera 5, which in the future will receive the relevant diagnostic reference image mounting side of the reference specimen 1 in the infrared range, showing thermal conditions (heat portraits"), working (OK) and faulty (defective) REE.
The subsequent formation of the control and diagnostic tests for the claimed method with application installation 1 given 2 occurs in cycles and consists of the following procedures at every step of forming tests:
1) the job from the computer 4 combinations of parameters the system is fir input test signals, supplied from source 2 test influences the inputs of the reference specimen 1 (including power supply);
2) measurement using gauges 3 running from the computer 4 of the reference parameters of the response signals from outputs of the reference sample 1 (received in response to the submission of the appropriate combination of input test signals) and entering the code values of the reference parameters of the response signals in the database computer 4;
3) getting under control from the computer 4 image of the reference specimen 1 in the infrared range. Obtained using an infrared digital video camera 5 image ("thermal picture" items REA) reflects thermal regimes of REE for the good working order of the reference sample items 1 which corresponds submitted to the inputs of the product 1 from source 2 combinations of input test signals and the reference;
4) recording the reference digital infrared image of the reference sample of the product 1 for a given combination of input test signals to the database computer 4.
After searching all preset combinations of input test signals in a database, the computer 4 produces a full array of diagnostic tests to determine (using the control and diagnostics settings figure 1 and figure 2) serviceability or malfunction of the products REA this t the PA as a whole, as well as an in-depth diagnosis of the fault location and type of each defective REE on the samples REA of this type (control objects).
The testing samples REA of this type is formed using the specified method tests carried out by feeding the inputs of the controlled specimen 1 combinations of input test signals and measurement signals of responses (as discussed in the procedure of forming tests using a reference sample of the product 1). The measured values of the response signals are compared in the computer with 4 pre-formed reference values of these parameters (for the same combinations of input test signals) subject to the permitted tolerances. For a working sample of the measured signal parameters of the response must coincide with the reference values (differences should not exceed the tolerances established during the formation of the tests). Mismatch (outside tolerance) the measured values of the response signals with reference values of these signals at least one combination of the input test signal is a symptom of a controlled sample of the product. The limits can be set, for example, according to the technical conditions on the Declaration of the points of control.
Fault diagnosis rejected according to the results of the control sample CEA conduct in relation to the original static state product CEA (with the power supply and in the absence of input test signals) and for combinations of input test signals used in process control have been identified discrepancy between the measured values of the response signals and the reference values of parameters of the same signal response (facts malfunction of the controlled specimen REA).
In the initial state at power inputs of the specimen 1 from the software controlled power sources (provided the sources of the 2 inputs) serves the standard power options. In the absence of the test input signals using a digital infrared camera 5 get the picture ("thermal portrait) sample 1 REA. Compare (visually on the monitor screen of the computer 4 and automatically program comparison images) obtained infrared image of the control sample CEA with a reference image (for the same initial condition of a healthy reference sample), resulting in the formation of the tests by the claimed method. In the result of the comparison reveal the location REE, image ("thermal portre the s") differ from the reference. Defective REE will differ in thermal portraits products or higher (for short circuit)or lower (for breakages REE, breakdowns of transitions of transistors and the like) temperature faulty REE. Mark detected location of the defective REE on the reference picture of this type of product CEA (obtained in the first step of forming tests by the claimed method in the optical range), allowing you to identify the type of faulty REE.
Further alternately set to the inputs of the product 1 the combination of input test signals, which were recorded failure of the specimen 1. For each combination of input test signals receive the infrared image ("thermal picture") of a controlled sample of the product, compare it with a reference image from the database computer 4, the differences between the current (faulty specimen 1) and the reference image set the location of the defective REE. Note defective REE on the reference picture of this type of product (obtained by the formation of the tests in the optical range).
After verification of the controlled specimen 1 for all combinations of input test influences that have defective condition of this specimen, the reference picture of this type of product CEA will be marked with the positions of all defective REE, identified at each step of diagnosis of this sample products REA, i.e. will be marked with the location of the faulty REA and their types on the basis of which will include a list of spare REE necessary to repair this specimen REA.
Thus, formed by the claimed method tests provide:
1) elimination of the need for contact probe diagnostic installation with intermediate points of electrical circuits of the product during the formation of the diagnostic tests and the subsequent fault diagnosis REA using the generated tests, because faulty REE detected remotely and non-contact based on the comparison of current and reference infrared image ("thermal portraits") sample of the product;
2) exception unreasonable damage to the waterproof coating during the formation of the tests and the subsequent diagnosis of a controlled sample of the product. Violation of the moisture-proof coating to produce diagnostic results only replace defective REE on non-defective in the repair of a sample of the product;
3) increasing the reliability of the generated tests, and the reliability and depth diagnostics. On the basis of comparison of the current (faulty condition of the sample) and the reference (undamaged state of the reference sample) in rakosnik images ("thermal portraits") of the CEA provides accurate identification of the location and type of defective REE at the maximum possible density mounting;
4) increase the productivity of formation diagnostic tests and follow-up diagnostics and repair. The formation of diagnostic tests and subsequent fault diagnosis items REA to the level of defective REE is provided automatically (without participation of the operator in shifting the location of the control probes). Places and types of defective REE, replacement, determined by reference to the photograph of the product CEA, which simplifies the selection of types of spare REE and accelerates the subsequent repair of the specimen REA.
Technical implementation of the installation of figure 1 and figure 2, is used to generate tests according to the claimed method, is provided with the use of standard commercially available technical means known from the prior art. For the formation of the tests used to install the same composition as and for subsequent monitoring and diagnostic samples of the product CEA using tests formed the claimed method.
As a reference sample 1 using a known-good copy of the sample products REA of this type meets the technical requirements for this type of product CEA.
As sources 2 test input electrical signals can be used programmatically controllable sources of switching-mode power is of, generators parallel code combinations of signals are software programmable pulse generators, signal generators, special forms, programmable generators of high-frequency signals and other software-controlled devices known from the prior art (similar to those used during the implementation of the prototype method) and provide simulated input signals in accordance with the technical requirements for this type of test object 1.
As a measure of the 3 parameters of the response signals from outputs 1 (depending on the type of the controlled products CEA) can be used known from the prior art logic analyzers, digital oscilloscopes, spectrum analyzers and other measurement devices (similar to those used for these purposes during the implementation of the prototype method and satisfying for metrological and operational characteristics of the technical requirements for this type of test object).
As the computer 4 in the structure of the device 1 can be used with standard personal computers, equipped with the necessary interfaces to connect 2 sources of input test signals, measures 3 parameters of the response signals and the infrared camera 5 with the necessary speed and memory
As a digital IR camera 5 can be used samples of the serial digital video cameras infrared range, similar to that used in the composition of industrial cameras and other similar devices with a resolution providing reliable images (thermal portraits) smallest size of REE (resistors, transistors, diodes, integrated circuits) on the distance "H" from the surface of the testing sample 1 according to figure 2. The minimum value of the distance "H" must be chosen such that the smallest lateral dimension of REE on the surface of the product corresponded to several gradations resolution IR camera, i.e. would provide reliable surveillance REE minimum size.
The casing (tube) 6 for placing a digital camera 5 may be performed in the simplest case, of cutting sheet metal with the formation of structure in the form of a hollow pyramid (see figure 2) with the placement of the lens of the infrared camera 5 in the top of the tube 6, as shown in figure 2. The lower the size of the tube 6 should be such that it covers the entire surface of the test object 1 located here REE.
As the infrared camera 5 can be used in serial digital IR camera, with the necessary sensitivity is awn, resolution and having the interface for connection to PC 4. Examples of such infrared cameras can serve, in particular, the IR camera VOCORD Net Cam L-series and N (provider in Russia: ZAO "VOCORD Telecom"), IR camera Micro Vista - NIR (provider in Russia: OOO "SEDATE") and others that have a resolution of at least 1280×1024 pixels (so you can get the IR portraits sufficiently small REE on the product 1 - diagnostic object).
The principle of obtaining infrared images (thermal portraits) products known from the prior art and widely used for thermal imaging cameras for different purposes (see, for example, "non-Destructive testing and diagnostics. The Handbook. Ed. by V.V. Klyuev - M.: Mashinostroenie, 2005, str...543).
The reference digital image hosting REE on the product 1 (used to identify the location of the faulty REE and clarify the types of REE, replacement during repair REA), can be generated using serial digital camera or camcorder optical range with digital output, with a standard interface (such as USB), providing digital image surface REA required definition (with distinction smallest REE) and the input files image frames of the digital image in the computer 4 through a standard interface.
Instead of the reference digital image of isdel is I 1 can be used in the design documentation (the General view drawing of the product 1), presented in electronic form. In this case, there is no need to use a digital camera or digital video camera optical range.
Thus, the claimed method of forming a test provides obtaining specified earlier, the technical effect is to eliminate the disadvantages of the prototype method and is implemented based on the model of technical means known from the prior art.
1. The method of formation diagnostic tests based on the formation of combinations of test input electrical signals with predetermined combinations of parameters with the specified sequences of feeding these signals to the inputs of the controlled specimen corresponding to the feed product of real input signals during normal operation of this type of products electronic equipment (REE) in the process of applying for the appointment, and to determine the reference values of the parameters of electric signals in response to outputs REA of this type, characterized in that for the formation of the tests use a known good reference for this type of product CEA, before the formation of combinations of test input electrical signals and signals response by using digital photography in the optical range receive the digital image of the reference sample R Is And clearly identified on the image geometric positions of the radio electronic elements (REE), their types and labels, put the digital image of the reference specimen (CEA) in the computer memory, sequentially generate all combinations of input test electrical signals that check for all possible operating States of the sample products of this type, for each combination of input test signals simultaneously measured reference values of the parameters of electric signals in response to outputs of the reference specimen REA of this type and get with digital infrared photography digital reference infrared image ("thermal portraits) sample REA so that were visible to thermal image is loaded REE in the process of going through them test input electrical signals and unloaded REE and positional provisions REE to receive the reference infrared images of the specimen REA coincided with positional provisions of these as REE on the original reference image of the specimen REA in the optical range, obtained at the beginning of the procedure of forming the test, the obtained combination of input test signals with reference values of the electrical parameters of the response signals and the reference digital images of the product CEA in the infrared range are entered into the computer memory control and diagnostics installation and is further used for health monitoring and fault diagnosis items REA of this type.
2. The method according to claim 1, characterized in that after receiving the reference digital image of the specimen REA in the optical range on the reference specimen REA submit the necessary power supply and in the absence of feeder combinations of input test signals obtained by digital infrared photography source reference digital infrared image (the original reference thermal portrait) this type of product CEA in statics, after which produce a flow of the combinations of the test signals and perform the subsequent generation procedure tests according to claim 1.
3. The method according to claim 1, characterized in that after measuring the reference values of the parameters of the response signals, their names are put in the computer memory of the control and diagnostic facility indicating the tolerances within which the differences between defined when the control parameter values of the response signals and the reference values of the parameters of the same signal received at the formation of the tests should not be considered as a symptom of controlled samples of the product REA of this type.
4. The method according to claim 1, characterized in that when receiving digital images of the reference images of the specimen REA in the optical and infrared ranges of the reference specimen REA and lenses digital shooting screen from the impact of third-party the sources of radiation, could distort or reduce the quality of test shots of a reference sample of the product.
5. The method according to claim 1, characterized in that instead of the reference picture of the product obtained using a digital video camera or digital camera in the optical range, use the General view drawing of the product specified on the positions of radio electronic elements and their credentials submitted in electronic form.
FIELD: physics, computer engineering.
SUBSTANCE: invention relates to micro- and nanotechnology and can be used when controlling and diagnosing microprocessor systems. The automated device for testing microprocessor systems contains the following: a testing module (1), units for permanent (2) and on-line storage of data, a unit for processing results and information (5), a control unit (4) which is a switch, a setting device (8), first (6) and second (7) interfaces. The units for permanent (2) and on-line (3) storage of data and the control unit (4) can be made as part of the tested object.
EFFECT: broader functional capabilities of the automated device due to possibility of detecting undocumented units and commands in a microprocessor system.
FIELD: physics; communications.
SUBSTANCE: invention relates to simulation and can be used in designing radio-electronic, engineering systems for evaluating operational characteristics. The outcome is achieved by measuring performance indices of a real communication network, simulating functioning processes of the simulated communication network and comparing the values.
EFFECT: possibility of simulating movement of communication network elements (nodes and communication devices) and subscribers (users) of the communication network; simulation of features of physical and geographical conditions of the region where the communication network is operating and where subscribers (users) are located; simulation network topology changes, change in communication channel (line) capacity; as well as increased simulation adequacy taking into account functioning processes of a real communication network.
FIELD: information technologies.
SUBSTANCE: microcomputer (ASIC) comprises multiple integral circuits (IC), which are connected to each other with interfaces that are synchronous to data sources. At first test data is input into trigger for data transfer (F1) and trigger for transfer of clock pulse (F2) into IC on the side of data transfer. Then circuit (11) of phase locking generates clock signal, in response to which the first and second triggers send test data and clock pulse. Triggers (F3, F4) for reception of IC data on the side of data reception, test data is registered, which come from the first trigger (F1) in compliance with clock pulse, which comes from trigger (F2).
EFFECT: provision of testing at working frequency at the level of circuit boards without application of system level test, and assessment of data sent along each transfer channel.
12 cl, 21 dwg
FIELD: technical systems diagnostics.
SUBSTANCE: method includes forming an equivalent standard model of connections, gaps of which include standard models of composition parts of current type of products, combinations of input signals are set in certain order, parameters of response on outputs of standard model of diagnosed product are determined as well as in characteristic intermediate points between standard models of composition parts of product, values of response parameters together with parameters of test input signals are recorded in database, after which process is repeated until fully searching all states of standard model.
EFFECT: possible forming of tests in absence of standard samples of control subject for different classes of products in different areas.
FIELD: measuring equipment.
SUBSTANCE: in turns, on each device, included in diagnosed block, feeding voltage amplitude is decreased in steps from nominal value Enom to threshold value Ethri with step ΔEn, while on each step of decreasing of amplitude of feeding voltage of device pseudo-random multi-digit code sets are sent to inputs of diagnosed block, consisting of logical zeroes and ones with even possibility of appearance of logical zero or logical one in each digit, received logic levels are recorded on outputs of diagnosed digital block and compared to standard levels, and when error frequency Fc appears, voltage value Ethri is recorded (functioning threshold) for each device and its functioning area is calculated on basis of feeding voltage ΔEpi. Defective (potentially malfunctioning) device is detected on basis of lowest value in functioning area ΔEpi, which is selected on basis of comparison of functioning areas of all devices, included in diagnosed digital block.
EFFECT: higher precision, higher efficiency.
SUBSTANCE: in device, comprising object of control, set of software-controlled sources of inlet test signals, set of digital metering parametres of response signals, control computer of device, there is additionally introduced digital video camera of infrared range, installed onto object of control with the help of adapter accessory, outlet of digital video camera of infrared range is connected to additional inlet of control computer of device, at the same time adapter accessory provides for fixation of digital camera lens with provision of full view of electric radio elements installed on object of control, and protection against effect of external radiations at results of diagnostics of controlled object faults.
EFFECT: invention provides for detection of faulty electric radio elements without damage to integrity of moistureproof coating of printed circuit boards, increased efficiency and validity of diagnostics.
3 cl, 4 dwg
SUBSTANCE: in method based on qualification of operable or faulty condition of controlled sample of radio electronic equipment (REE) depending on match or mismatch of measured values of parametres of electric signals of response and reference values of parametres of the same signals for operable condition of this type of REE, additionally infrared image (thermal image) of REE is produced with the help of digital video camera of infrared range with display of temperature conditions of electric radio elements (ERE) on it, as well as sections of electric circuits, and also their location in composition of REE sample, having detected REE faults by mismatch of measured and reference values of parametres of electric signals of response, produced infrared image of REE reflecting actual condition of ERE is compared with previously produced one, and results of comparison are used to determine location of faulty ERE to be replaced.
EFFECT: invention provides for detection of faulty electric radio elements without damage to integrity of moistureproof coating of printed circuit boards, increased efficiency and validity of REE faults diagnostics.
6 cl, 4 dwg
SUBSTANCE: device to control main parametres and operability of circuit board of control of electronic control system (ECS), current sensor (CS) and switch, comprises unit of supply, receiving part, central processor (CP) and converter of analog signal into digital one (ADC), control unit, unit of testing equipment, comprising tested CS, ECS circuit board and switch.
EFFECT: increased reliability of operation of electronic control system, current sensor and switch in process of operation.
FIELD: machine building.
SUBSTANCE: control system consists of control valve, of valve controller, of control line, of supporting component, of two pressure gauges, of logic, of processor, and of storage for recording threshold rate of change. The valve controller consists of two pressure gauges and is connected to a pneumatic actuator of the valve and to a solenoid valve for testing the valve actuator and solenoid valve under the on-line mode. To test the solenoid valve the valve controller measures pressure at various ports of the solenoid valve by actuating the solenoid valve for a very short period of time. The valve controller determines complete operability of the solenoid valve by derivative of difference between measured pressure signals, i.e. basing on rate of change of difference of measured pressure signals in time.
EFFECT: raised reliability of system functionality.
15 cl, 4 dwg
FIELD: information technology.
SUBSTANCE: apparatus for predicting system technical state has a shift-storage register, a unit for determining polynomial order, a circuit for connecting finite differences, a multiplier unit, a Newton time coefficient circuit, a delay element, a bus for setting the time point, a control unit, a computing unit designed for calculating a signal prediction on the selected model, a memory unit, an analysis and correction unit designed for calculating and correcting the prediction total error on a given algorithm, a unit for displaying prediction results.
EFFECT: broader functionalities of the apparatus owing to coordinated control and high accuracy of the apparatus owing to accounting for total prediction error.
FIELD: information technology.
SUBSTANCE: flight monitoring system has an onboard subsystem for collecting and transmitting flight information, and a subsystem for receiving and processing flight information in a ground air traffic control post. The flight monitoring subsystem has sensors for the state of separate units of the aircraft, conversation sensors, a unit for collecting and converting information, registers for process and conversation information, a unit for monitoring the state of the human operator, a unit for processing and preparing information and a unit for transmitting information. The subsystem for receiving and processing flight information has a unit for receiving information, an information register and an online information processing unit. The unit for monitoring the state of the human operator has human pulse and body temperature sensors, a pulse generator, a toggle flip-flop, a direct voltage source, setup units, a threshold element, pulse formers, recirculating shift registers, delay and comparator elements, pulse counters, AND and OR elements, a computing unit, an inverter, a digital-to-analogue converter, pulse formers, static flip-flops, control result memory registers, control result displays, an alarm (device for signalling deviation of the controlled parametre from the tolerance limits). Deviation of any of the controlled parametres from tolerance limits can be used to prevent accidents.
EFFECT: wide range of controlled parametres, in particular working of the heart of the human operator in real time, reliable operation of the flight monitoring system.
FIELD: information technology.
SUBSTANCE: equipment has a computer, a signal switch connected to not less than three monitoring units designed for connection to the monitored object. Each monitoring unit consists of a control unit, a multichannel comparator unit, a virtual standard, a load switch, a controlled load, a controlled power supply for output circuits, an output signal former, a switch and a standardisation unit.
EFFECT: broader functionalities of the device owing to possibility of measuring the level of the input power voltage in each channel and monitoring with nominal and maximum load, and high reliability of monitoring results.
2 cl, 1 dwg
SUBSTANCE: method of determining a failed angular velocity sensor in a redundant system is based on periodic checking the relationship of measured motion parametres which characterises non-faulty operation of sensors, detecting the moment the relationship is violated, turning the system by a given angle φ0 from that moment, integration of measured parametres during turning, comparing signals received after integration with given signals after turning and determining the failed sensor from the comparison results.
EFFECT: broader functional capabilities of automatic control.
FIELD: electrical engineering.
SUBSTANCE: multi-purpose test bench serves to check up control systems of both new-range electric locomotives and operating ones. Test bench exploits industrial computer that has up to 20 free slots to receive standard adapters of available set and allows simulating, in fact, all required diagnostics signals. Adapters inserted in said slots are automatically connected to computer system bus and controlled by it as integral component of computer.
EFFECT: expanded performances in generating and reading off discrete, analog and pulse signals, reduced costs and simplified design, higher quality of signals.
SUBSTANCE: invention discloses a method of monitoring preservation of metrological characteristics of automated measurement systems which contain controlled sources of test effects, information-bearing parametre measurement devices, devices for measuring parametres of uncontrolled external effects and a control computer. The method enables to assess metrological characteristics by using connection cables with parametres which are stable in time to connect outputs of corresponding sources of stimulating effects to inputs of information-bearing parametre measurement devices, and intactness of measurement devices and the system as a whole is determined based on statistical data obtained from measurement which are processed by the computer.
EFFECT: longer calibration interval of measurement systems, more efficient and reliable monitoring of complex objects.
2 cl, 1 dwg
FIELD: automatic control, applicable in systems with excessive quality of transducers, for example, accelerometers, a failure of one of which should not result in a failure of the control system.
SUBSTANCE: the method is based on a periodic check-up of relation between the measured parameters of motion characterizing the correct operation of the transducers, fixation of the moment of failure of the relation, comparison of the readings of the transducers at this moment and at the moment preceding the moment of disturbance of the relation, and determination of the failed transducer by the results of the comparison.
EFFECT: expanded functional potentialities due to possibility of determination of the failed transducer in any excess system.