RU2145735C1 - Process testing and evaluating technical state of multiparameter object of diagnostics by data of measurement information - Google Patents

Abstract

FIELD: technical diagnostics of complex technical objects. SUBSTANCE: process is based on division of structural and functional circuit of multiparameter object of diagnostics into equivalence and tolerance spaces or their combinations. Joint functioning of structural elements of multiparameter object of diagnostics is presented a priori in the form of structural and functional circuit of states built from sequentially-arranged, radially-arranged and fully coupled arranged structures of interrelation of states of structural elements of multiparameter object of diagnostics shown on screen of video monitor in the form of equivalence and tolerance spaces or their combinations which under normal operation are coded by one color, for instance, green. If anomalous situation emerges anomalous region of states of structural elements is isolated and coded by another color, for instance, red. Color-coded " n by t " matrix is made up, where n is numbers of parameters ( pickups ) that fall outside the tolerance ( starting from first one ) and t is time corresponding to them. Then parameters ( pickups ) recording anomaly and location of faulty structural element or aggregate of structural elements are determined. EFFECT: timely detection of region of faulty technical states of object. 4 dwg

Description

 The invention relates to the field of technical diagnostics (recognition) of complex technical objects and is intended for monitoring and evaluating a technical multi-parameter diagnostic object using a computer according to the measurement information.

 There is a method of monitoring and evaluating the technical condition of a multi-parameter diagnostic object according to the measurement information, which consists in converting the amplitude of the parameters of the sensors into information color codes, using a matrix whose columns correspond to the numbers of the sensors and the rows to the specified time intervals. When the sensor amplitude exceeds a specified range, the information color-code signal in the matrix changes color, which is observed on the screen of a video monitor [1].

 The disadvantage of the prototype is that the described method captures the nature of the change in the state of the object and does not allow an admission assessment of the technical condition of the object.

 The purpose of this invention is the operational detection of areas of faulty technical conditions (topology) of a multi-parameter diagnostic object.

 This goal is achieved by the fact that the current state of the multi-parameter diagnostic object on the video monitor screen is depicted in the form of a structural-functional state diagram of the structural elements of the multi-parameter diagnostic object, which is a priori and presented in the form of the corresponding structural-functional state diagram constructed from the basic structural descriptions in the form of sequential -ordered, radially ordered and fully-connected ordered spaces (structures) is equivalent STI and tolerance, or combinations thereof. The a priori structural and functional diagram of the states of a multi-parameter diagnostic object for normal operation is encoded in one color of the visible spectrum (for example, green), and during emergency operation, in another (for example, red). In the event of an abnormal situation of malfunctioning states, which is recorded during tolerance processing of the parameters of the measuring information, the anomalous area of the sensors that is encoded in a different color (for example, red) is allocated on the structural-functional state diagram displayed on the monitor screen; additionally, a flower-code matrix of states of size “n by t” is compiled, where n are the numbers of sensors that have gone beyond the tolerance (starting from the first), and t is the time of observation (registration) of anomalies (the flower-code matrix plays only an auxiliary role in the event of anomalies); a sensor (or a group of sensors) is determined that fixes the anomaly and location (topology) of the faulty structural element or the set of structural elements covered by cause-effect relationships with the faulty structural element.

 A comparative analysis of the technical solution with the prototype shows that the claimed technical solution differs from the prototype in using the structural-functional diagram of the standard state of the multiparameter diagnostic object, a priori compiled in the form of a different combination of zones (states) of equivalence and tolerance and encoded in different colors in the process of monitoring the current states of the multiparameter diagnostic object. Thus, the claimed method of monitoring and evaluating the technical condition of a multi-parameter diagnostic object according to the measurement information meets the criteria of the invention of "novelty."

 The search for technical solutions in this technical field did not reveal among them the distinguishing features of the claimed technical solution, the combination of which allows us to obtain the desired result, which meets the criterion of "inventive step".

The state of each structural element of the multi-parameter diagnostic object in which the measuring sensors are installed can be displayed on the monitor screen using state rectangles represented as spaces (state classes of the multi-parameter diagnostic object) of equivalence and tolerance. We believe that structural elements are in a causal relationship with each other, while the following decomposition of structural elements into state classes is possible:
a) equivalent state - occurs when the state (classes of states) of structural elements is clearly distinguishable, that is, the failure of one structural element inoperatively unambiguously determines the state of another conjugated structural element (operational - faulty);
b) tolerant state - occurs when the state (state classes) of structural elements cannot be clearly distinguished, that is, the failure of one structural element inoperatively determines the state of another conjugated structural element (operational - faulty).

There are three types of tolerant structures or three types of tolerant states:
1) sequentially ordered (Fig. 1 "a"), characteristic of structural elements connected in series one after another, i.e. the state is unclear due to the input to the working structural element of invalid signals generated by the faulty "j - 1" or "j + k" -th structural element (which is possible due to the presence of feedbacks), mathematically it is as follows:
(S $\genfrac{}{}{0ex}{}{\text{n}}{\text{j-1, j}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{j-1}}$ ) & (S $\genfrac{}{}{0ex}{}{\text{n}}{\text{j-1, j}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{j}}$ ), (1)
where S _j ^T is the tolerant state of the j-th structural element;
S _j ^T is the tolerant state of the (j - 1) th structural element;
S ^H _{j-1, j} is the fuzzy state of the (j - 1) -th and j-th structural elements covered by reverse sequentially ordered bonds due to the presence of invalid signals generated by the faulty "j = 1" or "j + k" - m structural element;
2) radially ordered (Fig. 1 "b") - character for structural elements connected by the principle of "each with a center, the center with each", i.e. the state is unclear due to the input of an operational central structural element of invalid signals generated by the faulty "j" -th structural element, which is mathematically represented as follows:
∀ _j ∈ N-1 [(S $\genfrac{}{}{0ex}{}{\text{n}}{\text{j, N}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{j}}$ ) & (S $\genfrac{}{}{0ex}{}{\text{n}}{\text{j, N}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{N}}$ )], (2)
where S _j ^T is the tolerant state of each j-th structural element;
S _N ^T - tolerance of the state of the central N-th structural element;
S ^H _{j, N} - fuzzy state of similar structural elements;
3) fully connected-ordered (Fig. 1 "c") - characteristic of structural elements connected by the principle of "each with each", i.e. the state is unclear due to the input of any healthy structural element of invalid signals generated by any faulty "i, j" structural elements, which is mathematically represented as follows:
∀ _{i, j} (S $\genfrac{}{}{0ex}{}{\text{n}}{\text{i, j}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{i}}$ ) & (S $\genfrac{}{}{0ex}{}{\text{n}}{\text{i, j}}$ ⊂ S $\genfrac{}{}{0ex}{}{\text{t}}{\text{j}}$ ) (3)
where S _i ^T is the tolerant state of each i-th structural element;
S _j ^T is the tolerant state of each j-th structural element;
S ^H _{i, j} is the fuzzy state of similar structural elements.

 The proposed method allows real-time monitoring and evaluation of the state of a multi-parameter diagnostic object with an unlimited number of sensors (parameters), promptly indicating the state of an abnormal structural element or a multitude of anomalous structural elements, and using it in conjunction with the prototype will also indicate the sensor (s), recorded an anomaly, and determine the epicenter of local disturbance, which allows us to talk about its industrial applicability. This method can be implemented in diagnostic and recognition systems, in various situational centers and diagnostic centers for assessing the technical and functional state of a multi-parameter diagnostic object. An example of the practical implementation of the proposed method can be represented in the form of a flowchart (figure 2), its operation is described as follows.

 From the diagnostic object, signals from the sensors (via cable network or in the form of radio signals for a remote multi-parameter diagnostic object) are transmitted to the consumer. At the consumer, in the measuring information input unit, the signals are converted to digital, analog, code and signal information depending on the specifics of the multi-parameter diagnostic object and the measurement system.

 In the parameter estimation block, the parameter of each sensor is compared with an acceptable value, it is examined for the presence or absence of functioning of the corresponding structural element or the set of structural elements of a multi-parameter diagnostic object.

 In the analysis unit, the areas of the structural-functional scheme are determined that correspond to the abnormal functioning of the multi-parameter diagnostic object in which a change in the color code is required.

 In the block of color coding (from the prototype) the color code of the current state of the structural-functional scheme is formed.

 As a result, an a posteriori structural and functional diagram of the current state of the multi-parameter diagnostic object is displayed on the monitor screen, which is observed by an expert analyst (who is himself an element of the diagnostic system) in real time.

 In the event of an abnormal situation, in addition to the structural and functional diagram with the zones that changed color, below, on the screen of the video monitor there is a matrix of size “n by t”, where n are the numbers of parameters that have exceeded the tolerance (or ceased to function), and t is the time corresponding to them, which determines the parameters (sensors) that fix the anomaly and location of a faulty structural element or a set of structural elements (see prototype) [1].

 Literature.

 1. Omelchenko V.V., Zasukhin E.A. et al. A method for monitoring and evaluating the technical condition of a multi-parameter object according to telemetric information. RF patent for the invention N 2099792 // B.I. 1997, N 35, p. 585.

Claims (1)

 A method for monitoring and evaluating the technical condition of a multi-parameter diagnostic object according to the measurement information, which consists in converting information signals through a matrix whose columns correspond to sensor numbers and rows to specified time intervals and determining the local disturbance epicenter from the color-code signal of the largest value from all information signals a given time interval, characterized in that the joint functioning of the structural elements of the multiparameter The diagnostic object of diagnosis is a priori represented in the form of an a priori structural and functional state diagram constructed from sequentially ordered, radially ordered and fully connected ordered structures of the state relationships of structural elements displayed on the screen of the video monitor in the form of spaces of equivalence, tolerance or their combinations, and with normal the functioning of a multi-parameter diagnostic object, the circuit is encoded in one color, if an abnormal situation arises on the posterior In the structural-functional diagram, an anomalous region of states of structural elements is selected, which is encoded in a different color, and a flower-nodal matrix of size "n by t" is made, where n are the numbers of parameters (sensors) that have exceeded the tolerance (starting from the first), and t is the observation time (registration) of an anomaly by which the parameters (sensors) are determined that fix the anomaly and location (topology) of the faulty structural element or the set of structural elements covered by causal relationships with the faulty structural element th.

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