RU2784384C2 - Automated system for control and diagnostics of replaceable elements of radio-electronic equipment - Google Patents

Abstract

FIELD: radio engineering.

SUBSTANCE: invention relates to automated systems for control and diagnostics (hereinafter – ASCD) of structural replaceable elements (hereinafter – SRE) of radio-electronic equipment (hereinafter – REE) of complex technical systems (hereinafter – CTS). ASCD includes a set of generators of test effects A_i and a set of meters of response signals B_i, connected to a computer. A composition of test effect generators and a composition of response signal meters, as well as their metrological characteristics provide formation of necessary combinations of test effect signals and measurement of corresponding combinations of response signals for control of efficiency and diagnostics of malfunctions of any type of REE SRE from a given range, for which a specific ASCD exemplar is intended.

EFFECT: provision of a possibility of control of efficiency and diagnostics of malfunctions of a full range of REE SRE of CTS sample, using one ASCD exemplar having expanded capabilities in formation of combinations of test effects and in measurement of combinations of response signals satisfying control and diagnostics requirements of any type of REE SRE of this range.

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Description

The invention relates to the field of control and measuring equipment, in particular to multi-channel multi-parameter automated measuring systems (AIS) designed to monitor the performance and diagnose malfunctions of radio-electronic equipment (REE) of complex technical systems (STS), including weapons systems and military equipment.

Radio-electronic equipment is the most important component of complex technical systems used in various subject areas. The operability of REA largely ensures the operability of the corresponding products and the implementation of the specified operational and technical (for weapons and military equipment, tactical and technical) characteristics. In this regard, an urgent task is to ensure the required level of REA readiness for the intended use, i.e. modern troubleshooting and troubleshooting.

To ensure the required level of maintainability of electronic equipment of modern STS (including AME products) are built on the basis of a set of structural replaceable elements (CSE), which are printed circuit boards with electrical radio elements installed on them (integrated circuits of various degrees of integration, transistors, diodes, resistors, etc.) in As part of a CTS sample, from several hundred to several thousand SSCs of various types can be used. The connection of the CSE to each other as part of the STS is carried out using edge connectors. Connector contacts are used both for supplying input signals to the CSE inputs, and for receiving output signals from the CSE.

In this regard, a common way to monitor the performance of the CSE is to apply combinations of test (test) actions "y" with specified parameters and metrological characteristics to the inputs of the CSC through the input contacts of the edge connector and measure the parameters of the set of response signals "x" from the output contacts of the edge connector. Comparison of the measured values \u200b\u200bof _the parameters of the response signals from the outputs of the CSE with the reference values \u200b\u200b“x _e ” of these parameters, measured for the serviceable (operating) state of this type of CSE, makes it possible to judge the serviceability (operability) or serviceability (inoperability) of the controlled sample of the CSE.

Due to the circuit complexity of SSCs from modern STS, to control their performance, it is necessary to generate a sufficiently large number of combinations of test signals (especially for digital and combined SSCs), and it is also necessary to measure the corresponding combinations of response signals. In order to ensure the required performance and reliability of the assessment of the state of the SSC, monitoring their performance and diagnosing faults is carried out using specialized multi-channel multi-parameter AIS, called "Automated monitoring and diagnostic system (ASKD)".

The closest in technical essence to the claimed invention is ASKD according to patent RU 2222865 C1, 27.01.2004, used for the prototype.

The device and principle of operation of ASKD, adopted as a prototype, is illustrated in the block diagram of Fig. one.

In the diagram of Fig. 1 includes: test object (a specific type of CSE REA) 1, sources 2 of test actions y ₁ , …, y _m for this type of control object 1, meters 3 of response signals x ₁ , …, x _k from the outputs of this type of control object, computer 4, meters 5 of the parameters of external influences z ₁ , ..., z _n on the control object 1.

The prototype device is created and operates as follows.

In accordance with the characteristics of a specific type of control object 1 (for example, a specific type of CSE REA), the number "m" of test actions "y" to be applied to the inputs of the control object 1 is preliminarily determined. Based on this, the number "m" of test action channels "y" is determined. ”, i.e. the number of sources of test influences 2, which should be included in the ASKD of FIG. 1 and must be connected to the corresponding inputs "y" of the control object 1. After that, for each channel "y" of the test impact sources 2, the type of test impact is determined (for example, direct voltage, pulse signals, high-frequency signals) and the requirements for the metrological characteristics of the generated test influences "y" (for example, the amplitude of the signals and the maximum allowable error in the formation of signals of a given amplitude). Based on this, appropriate software-controlled devices 2 are selected from the measuring instruments available for the prior art, which provide (under the control of a computer 4) the formation of the necessary types of test impact signals “y” with the required parameters and metrological characteristics.

Similarly, the composition and number of response signals x ₁ , ..., x _k from the outputs of the control object 1 (from the output contacts of this type of CSE REA) are determined. The types of response signals "x" are determined for each output of the control object. For each type of response signals "x", for each output of the control object 1, the requirements for the measured parameters of the response signals "x" and the metrological characteristics of measuring these parameters of the response signals (for example, the amplitude of the response signals and the maximum allowable error of its measurement) are determined. Based on this, the corresponding software-controlled means of measuring 3 response signals "x" are selected from the prior art, which are included in the ASKD of FIG. 1-with connecting the outputs of these meters 3 to the inputs of the computer 4.

During the control process, the control object 1 can be affected by uncontrolled external influences "z" - for example, ambient temperature, air humidity, external electromagnetic measurements, etc. To take into account the possible influence of the parameters of external influences "z" on the results of monitoring the state of object 1 as part of the ASKD of Fig. 1 provides for the use of appropriate meters 5 of external influences "z". The composition of the meters 5 of external influences, the requirements for the measured parameters of these influences "z" and the metrological characteristics of their measurements are determined from the analysis of the conditions in which the control of the object 1 is carried out, as well as the degree of influence of these influences on the current technical condition of the object of control 1 (for example, specific type of CSE REA) and the reliability of the assessment of this state using ASKD Fig. one.

The principle of operation of ASKD Fig. 1 according to patent RU 2222865 C1, 01/27/2004 is as follows:

1. According to the control program previously entered into computer 1, commands are sent to test impact sources 2 from the computer to form a given combination of test impacts y ₁ , …, y _m .

Sources of test influences 2 form the corresponding signals of test influences y ₁ , ..., y _m and apply them to the inputs of the control object (for example, to the input contacts of the CSE REA). In response to the impact of these signals at the outputs of the object 1 (at the output contacts of the CSE REA) there are response signals x ₁ , ..., x _k with the appropriate parameters. Response signal meters 3 measure the parameters of the output signals x ₁ , ..., x _k received at their inputs, and transmit the measurement of the values of these parameters to computer 4. In computer 4, the received measured values \u200b\u200bof "x _and " of the response signals are compared with those in memory (previously entered before the start of control) reference values "х _e " of the parameters of these signals for the operable state of this type of control object 1 (of this type of CSE REA). If the values of these parameters match for all combinations of input test actions y ₁ , …, y _m , the control object 1 is serviceable. If the measured and reference values (х _and ≠х _e ) of the response signal parameters do not match, the control object is faulty.

The advantage of ASKD Fig. 1 according to patent RU 2222865 C1, 01/27/2004, adopted as a prototype, is to ensure the required performance and reliability of the health monitoring of a particular type of control object 1.

With regard to the tasks of monitoring the performance and diagnosing malfunctions of the CSE of REA from the composition of the STS (including those from the composition of modern weapons and military equipment) is a narrow specialization of this ASKD for a specific type of control object, i.e. for a specific type of CSE REA. The number of channels for generating test impacts 2, the parameters and metrological characteristics of each test impact generator 2 are determined by the composition of the inputs of a particular type of control object (a specific type of CSE REA). The number of response signal meters 3, the requirements for the measured parameters of the response signal "x" and the metrological characteristics of measurements are determined by the composition of the outputs (output contacts of the CSE REA) of a particular type of test object 1, as well as the requirements for the metrological characteristics of measuring the response signals "x" for this particular type control object 1 (specific type of CSE REA).

Considering that several hundred types of CSE of REA are used in the REA of modern STS, in the case of creating ASKD fig. 1 according to patent RU 2222865 C1, 27.01.2004, in order to control the performance of the entire range of CSE REA during the repair of one sample of STS (one sample of weapons and military equipment), it will be necessary to use the corresponding number of ASKD samples of Fig. 1, each of which will be specialized in the control of one given type of SSC REA.

The purpose of the claimed invention is to provide the possibility of monitoring the performance and diagnosing malfunctions of the full range of CSE REA from the composition of the STS sample (WT sample) using one copy of the ASKD, which has enhanced functionality compared to the prototype.

This goal is achieved by the fact that before the creation of ASKD, a preliminary analysis of the parameters of test actions and parameters of response signals is carried out for the entire range of CSE REA, for which the created ASKD is intended. During the analysis, the signals are grouped by types, parameters, and metrological characteristics in order to optimize the requirements for the composition of the sources of test influences 2 and for the composition of the response signal meters. The grouping of test action signals and response signals is carried out in stages.

2. The complete nomenclature (complete list of types) of CSE REA subject to performance monitoring using the created ASKD is determined.

3. For each type of CSE REA (by measurements or on the basis of documentation analysis), the composition of the input "A _i " and output "B _j " signals, the parameters of each signal (amplitude, frequency, duration), metrological characteristics of their formation (for input signals “A _i ”) or measurements (for output signals “B _j ”), as well as the distribution of these signals over the contacts of the connectors of this type of CSE REA.

4. Produce a grouping of the same type of input (A _i ) and output (B _j ) signals. For example, signals in the form of DC voltage levels, pulse signals, high frequency signals.

5. For each group of signals of the same type (for example, DC voltage), the parameter values are determined for each type of CSE REA and the metrological characteristics of the formation (for input signals) or measurement (for output signals) of the parameters of these signals, respectively.

6. Based on a comparison of parameter values and metrological characteristics for each type of signals used in all types of CSE REA, the maximum requirements are determined (for example, the maximum value of the DC voltage amplitude and the maximum value of the maximum allowable formation (measurement) error), which will be satisfied by the characteristics of the shapers of this type of signals of test actions and the characteristics of the meters of the parameters of the response signals (A _i and B _j - respectively).

7. Based on the analysis of all types of CSE REA, the types of CSE REA are determined, which use the largest number of input signals A _i and N _b output signals B _j (of each type of signal). Based on this, the requirements are determined for N _a to the number of channels of the same type for the formation of test actions A _i and the number of "N _b " channels for measuring the response signals.

As a result, the requirements are obtained for the choice of the number of measuring instruments for the formation of the same type of signals and the total number of measuring instruments for the formation of the entire set of different types of measuring instruments that provide the formation of any combination of test signals, which is necessary when monitoring the performance of any type of CSE REA of a given nomenclature. Similarly, requirements are obtained for the choice of types of measuring instruments that provide measurement of the parameters of any combination of response signals from the outputs of any type of CSE REA from a given nomenclature of CSE REA.

At the same time, each measuring device to be used as part of ASKD as test action signal generators or as response signal meters must have metrological characteristics (range of formation / measurement of parameters, errors of formation / measurement of signals) that meet the requirements for monitoring the performance of any type of CSE REA ( i.e. meet the requirements and metrological characteristics of groups of signals of the same type, established earlier in accordance with clause 6.

The software-controlled measuring devices selected in the above way (test signal generators and response signal meters) are connected to the computer according to FIG. 2 (similar to the ASKD prototype) and are structurally combined into a single design of this fully functional ASKD of FIG. 2.

The number of channels for generating test signals N _a (the number of types of signals - taking into account the maximum number N _a of the same type of signals for individual types of CSE REA) and the number of channels for measuring response signals N _b (the number of types of response signals - taking into account the maximum number of the same type of response signals for individual types CSE REA) will somewhat exceed the total number of input and output signals for any type of CSE REA of a given nomenclature. However, this will be significantly (hundreds of times - taking into account the number of types of CSE REA in modern STS) less than required in the case of monitoring the performance of the entire specified nomenclature of CSE REA (hundreds of types) using specialized ASKD (prototype) according to patent RU 2222865 C1, 27.01 .2004.

Thus, the implementation of the claimed invention, according to which the ASCD channels of Fig. 1 have metrological characteristics that meet the requirements for monitoring the performance of all types of CSE REA of a given nomenclature simultaneously and provide the formation and measurement of the necessary combinations of signals for any type of CSE REA, ensures the achievement of the claimed technical result, namely, ensuring the possibility of monitoring the performance and diagnosing faults of the full range of CSE REA from the composition of the STS sample (VVT sample) using one copy of the ASKD of Fig. 2, which has advanced capabilities for generating combinations of test actions and for measuring combinations of response signals that meet the requirements for monitoring and diagnosing any type of CSE of REA of a given nomenclature.

To achieve this result, one more contradiction must be eliminated. In the completed design of ASKD, the constructive position of the outputs of the channels for generating test actions (output contacts of ASKD) and the inputs of channels for measuring response signals (input contacts of ASKD) are fixed and are represented by the contacts of the connecting connector (s) of ASKD. The position of the input and output contacts (numbers of contacts) in the connectors of different types of CSE REA may differ from each other. In this regard, to connect to ASKD Fig. 2 different types of CSE REA, having different distribution of input and output signals on the contacts of the connectors, as well as different connecting characteristics (types of edge connectors, dimensions), transitional switching devices (connectors, adapters) must be used. These devices will provide a direct electrical connection of the corresponding outputs of the ASKD test signal generation channels with the input contacts of a specific type of CSE REA, as well as the connection of the corresponding output contacts of the CSE REA with the inputs of the channels for measuring the ASKD response signals.

ASKD according to patent RU 2222865 C1, 01/27/2004 (prototype) provides for the measurement of the parameters "z" of uncontrolled external influences (ambient temperature, electromagnetic radiation, etc.) that affect the results of assessing the current state of the control object 1. Further, the introduction corrections to the obtained estimates of the results of control based on the known functional dependencies of the indicator "w" of the quality (state) of the control object 1 on the values of external influencing factors. In the case of monitoring the performance of CSE REA, such dependencies are of a very complex nature, which in many cases is problematic to establish and use.

To eliminate this disadvantage of the prototype in the claimed ASKD Fig. 2 performance monitoring and troubleshooting of the CSE REA is provided for under conditions that exclude the influence of external influencing factors on the technical condition of the CSE REA sample. This is achieved by placing the ASKD pattern of FIG. 2 in a closed, heated shielded room (for example, in the technological compartment of a shielded container body of a mobile repair and diagnostic complex.

When establishing the fact of a malfunction of the REA SSC, it is necessary to carry out diagnostics, localization and identification of faults in the REA SSC by the method of in-circuit diagnostics. In this case, the connection of the corresponding channel for measuring the response signals (in accordance with the types of signals at the control points of the CSE REA circuit) in the ASKD of Fig. 2 is intended to be carried out using measuring probes. The measuring probe provides contact with a given control point of the CSE REA and transmission of a response signal from this control point to the input of the corresponding channel for measuring the response signals. The incoming signal is measured and compared in the computer memory with the reference values of the signal parameters at a given point, obtained earlier for a working (serviceable) sample of the CSE REA of this type. Based on the results of the comparison, an assessment of the serviceability of the controlled part of the CSE REA circuit is formed and the localization of the faulty electrical radio element is carried out.

The technical implementation of the test impact sources 2, the response signal meters 3 and the computer 4 is carried out by selecting the appropriate types of devices known from the prior art (for example, similar to the ASKD prototype) and satisfying the previously specified requirements for the implementation of monitoring and diagnostics of the CSE REA of a given nomenclature.

Claims (2)

Fig. 1. Automated system for monitoring and diagnostics (ASKD) of structural replaceable elements (CSE) of radio-electronic equipment (REA), including test impact sources A _i , response signal meters B _j and a computer to which control inputs of test impact sources A _i are connected via interface channels and information outputs of the response signal meters B _j , while the outputs of the test influence sources A _i and the inputs of the response signal meters B _j are designed to be connected to the inputs and outputs of at least one CSE of the REA, which is the object of control and diagnostics, respectively, characterized in that the number of test impact sources for each type of generated test signals corresponds to the maximum number of inputs to which signals of each type are applied in the entire range of controlled CSE REA from the sample of a complex technical system (CTS), the number of response signal meters for each type of measured signals The line corresponds to the maximum number of outputs from which the response signals of each type are received in the entire range of controlled CSE REA from the STS sample, the metrological characteristics of the sources of test effects and meters of the response signals meet the requirements for the metrological characteristics of monitoring any type of CSE REA from a given nomenclature of the CSE REA, while ASKD includes transient switching devices that provide connection of the outputs of the sources of test effects and the inputs of the response signal meters, which have a fixed structural arrangement, to the corresponding output contacts of the CSE REA, which have a different design arrangement in the connectors of the CSE REA of different types. 2. ASKD under item 1, characterized in that it is located in a shielded closed heated room.

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