KR101721052B1 - State diagnosis system by wireless communication between state transmitter and state receiver and method thereof - Google Patents

Abstract

According to an embodiment of the present invention, a component state diagnostic system for inspecting the state of each of one or more components configuring an assembly includes: one or more state transmitters individually mounted in the components; and a state receiver which executes individual wireless communication operations with the respective state transmitters to receive state signals regarding each of the components. Each of the one or more state transmitters analyzes the state of components having the corresponding state transmitters mounted thereon to diagnose whether the components are in an abnormal state or not, adjusts the frequency in accordance with the component abnormality diagnosis result, and transmits the state signals with signal properties reflecting the adjusted frequency to the state receiver.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for diagnosing component status through wireless communication between a status transmitter and a status receiver,

The present invention relates to a system and method for diagnosing component status through wireless communication between a status transmitter and a status receiver, and more particularly, to a system and method for diagnosing component status through wireless communication between a status transmitter and a status receiver, To a system and method for independently diagnosing the condition of each component by adjusting the frequency.

Industrial manufacturing facilities, as well as various devices or equipment, are made up of a variety of complex components. As science and technology develops, the type and structure of the components constituting such devices or equipment become complicated and diverse, and as the performance functions of the respective components become various, it is necessary to check the operation states of the respective components, It is more important to immediately detect and diagnose the failure.

However, in the case of the conventional method of diagnosing a part condition, a state diagnosis or a trouble diagnosis is performed through a central device that controls the entire system in which the components are gathered. Accordingly, when a problem occurs in the central device data, I could not confirm the abnormality.

In addition, in the case of the conventional fault diagnosis technology, the fault diagnosis transmission / reception channel is composed of wired lines, and diagnosis results are transmitted to the central apparatus through the wiring, so that there are technical limitations.

Accordingly, as disclosed in Korean Patent Laid-Open No. 10-2010-0005451 (prior art document 1), technologies for diagnosing various devices, equipment, or facilities through wireless communication have been developed.

However, even in the case of the prior art document 1, failure diagnosis of various parts and functions of the vehicle is performed in the controller, and the diagnostic result is transmitted at once from the diagnosis control device. There is a problem in that it is difficult to check the status of each part or to diagnose a fault.

Also, in the case of the prior art document 1, there is a problem that, when a problem occurs in the module for fault diagnosis, diagnosis results for components may mutually affect each other, so that it is difficult to accurately diagnose the condition of each component.

Prior Art 1: Korean Patent Publication No. 10-2010-0005451 (published on January 15, 2010)

An object of the present invention is to solve the problems of the above-described prior art, and it is an object of the present invention to individually diagnose the state of each component or component constituting one device, equipment or facility, .

Another object of the present invention is to allow a state transmitter, which is mounted in each component, to diagnose the state of each component, and each state transmitter independently communicates wirelessly with the state receiver to transmit the state diagnosis result .

It is a further object of the present invention to provide a method and apparatus for setting a unique frequency for a steady state for each state transmitter and adjusting the transmission frequency to match the state diagnostic result of the component on which the state transmitter is mounted, So as to improve the convenience and accuracy of the state diagnosis method as well as to promptly perform the state diagnosis of each component.

According to an aspect of the present invention, there is provided a component state diagnosis system for individually checking states of at least one component constituting an assembly, the system comprising: The status transmitter; And a status receiver that receives a status signal for each of the components by performing wireless communication independently of each of the status transmitters, wherein each of the one or more status transmitters includes: Wherein the controller is configured to transmit the status signal of the signal characteristic reflecting the adjusted frequency to the status receiver by analyzing the status of the component, diagnosing the abnormality of the component, and adjusting the frequency according to the diagnosis result of the abnormality of the component, A condition diagnosis system is provided.

Each of the one or more status transmitters receives status data on status information of one or more items related to the detailed functions of the component on which the status transmitter is mounted and analyzes the status of the component to perform status diagnosis of the component A state data receiving unit for receiving a state signal from the state transmitter and outputting a state signal indicating a result of the component state diagnosis; And a frequency adjuster for adjusting a transmission frequency, which is a frequency of a state signal outputted according to the state diagnosis result of the state data receiver, on the basis of the frequency value. And a signal transmitter for transmitting the status signal corresponding to the frequency characteristic set by the signal setting unit to the status receiver.

The reference frequency preset in the frequency controller is set to a different value for each of the different status transmitters among the one or more status transmitters

Wherein the status data receiver calculates a severity corresponding to a criterion for classifying the degree of abnormality or the degree of failure of the component on which the status transmitter is mounted based on the status diagnosis result, Is proportional to the sum of weights given to one or more items in which anomalies are present.

Wherein the difference between the transmission frequency adjusted by the frequency adjusting unit and the reference frequency set in the frequency adjusting unit is proportional to the severity.

Wherein the signal setting unit includes a signal intensity control unit for adjusting an intensity of the status signal to match a frequency band of wireless communication performed between the status transmitter and the status receiver, Or a transmission signal amplifier amplifying the state signal according to a set signal characteristic; And a transmitter for transmitting the amplified status signal to the status receiver via wireless communication with the status receiver.

The status receiver comprising: a signal receiver for receiving the status signals received from the one or more status transmitters, respectively; And a signal analyzer for performing frequency analysis on each of the received status signals to diagnose an abnormality of each of the components corresponding to the status signals.

The status receiver may output an analysis result or a diagnostic result of the signal analyzer to monitor the status of one or more components in real time.

According to another embodiment of the present invention, there is provided a method for diagnosing a component condition for individually checking the status of each component, the status transmitter being each mounted within one or more components of the aggregate, the method comprising: (a) Setting a reference frequency, which is a frequency of a state signal outputted when each component having the state transmitter is in a normal state, to a frequency specific to each state transmitter; (b) receiving status data on status information of one or more items relating to the detailed functions of the component on which the status transmitter is mounted; (c) analyzing, based on the status data, a severity corresponding to a criterion for classifying an abnormality degree or a failure degree of the component on which the status transmitter is mounted; (d) setting a transmission frequency corresponding to a frequency of a status signal reflecting a result of status diagnosis of the component; And (e) transmitting the status signal according to the set transmission frequency characteristic to the status receiver through wireless communication with the status receiver; A method for diagnosing component status is provided.

Determining a variable constant value that varies the transmission frequency value according to the severity of the component calculated as a result of the severity analysis after the step (c), wherein the variable constant having a larger value And a difference between the frequency and the reference frequency is increased.

Wherein the step of determining the fluctuation constant value is determined as a first fluctuation constant when the severity of the calculated component is equal to or less than an intermediate value of the severity and when the severity of the calculated component is greater than the severity median value, As shown in FIG.

Wherein the first variation constant has a value of 1 or less and the second variation constant has a value of 2 ⁿ or more when the number of the state information items is n and the difference between the transmission frequency and the reference frequency is And is proportional to the variation constant.

According to another embodiment of the present invention, there is provided a method for diagnosing component status for individually checking the status of each of one or more components constituting an aggregate, the method comprising: (a) Receiving all status signals reflecting status diagnosis results of the respective components from the status transmitters by performing wireless communication independently from each status transmitter; (b) calculating a variation constant for determining a frequency value of each state signal by performing frequency analysis of each state signal; (c) determining, based on the calculated variation constant, the severity of each component on which the status transmitter is mounted; And (d) outputting a status analysis result for each of the components, thereby monitoring the status of each of the one or more components in real time; A method for diagnosing component status is also provided.

Therefore, according to the embodiment of the present invention, the state of each component or component constituting one device, equipment or facility can be diagnosed individually, and the state diagnosis result for each component can be accurately confirmed.

According to an embodiment of the present invention, a state transmitter, which is mounted in each component, diagnoses the state of each component, and each of the state transmitters performs wireless communication with the state receiver independently of each other, Diagnosis can be made quickly and accurately.

Further, according to an embodiment of the present invention, by setting an inherent frequency for the steady state for each state transmitter, and adjusting the transmission frequency to match the state diagnosis result of the component in which each state transmitter is mounted, By comparing and analyzing the frequency and the transmission frequency, the status of each component can be diagnosed instantaneously, so that the convenience and accuracy of the status diagnosis method can be improved.

FIG. 1 is a diagram showing a schematic configuration of a component condition diagnosis system according to an embodiment of the present invention.
2 is a diagram illustrating the configuration of a status transmitter and a status receiver according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of state signals transmitted and received by the state transmitter and the state receiver of FIG. 2, and an analysis result of the state signal.
4 is a diagram illustrating a process of analyzing the state of each component and transmitting a status signal according to the flow of time according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating a process of receiving a status signal and diagnosing a status of each component according to an exemplary embodiment of the present invention. Referring to FIG.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. However, the present invention can be implemented in various different forms, and is not limited to the embodiments described. In order to clearly describe the present invention, parts that are not related to the description are omitted, and the same reference numerals in the drawings denote the same members.

Throughout the specification, when an element is referred to as "including" an element, it does not exclude other elements unless specifically stated to the contrary. The terms "part", "unit", "module", "block", and the like described in the specification mean units for processing at least one function or operation, And a combination of software.

FIG. 1 is a diagram showing a schematic configuration of a component condition diagnosis system according to an embodiment of the present invention.

The component condition diagnosis system according to the embodiment of the present invention can independently diagnose each component state of all kinds of assemblies 10 composed of one or more components or parts such as a machine, a tool, an apparatus, a facility or a facility have. By monitoring the status of each component, the component status diagnosis system can check the internal function of the assembly 10, that is, the detailed function of each component in real time, and diagnose whether each component is abnormal or failed.

Referring to FIG. 1, a component condition diagnosis system according to an embodiment of the present invention includes a plurality of status transmitters 100a to 100e and a status receiver 200 capable of communicating with the respective status transmitters 100a to 100e.

Communication between the status transmitter 100 and the status receiver 200 may be performed by any of a variety of communication devices such as Wibro, WiMAX, HSDPA, WiFi, Zigbee, It can be configured as a wireless communication system for a specific frequency band without depending on the communication system.

The status transmitter according to one embodiment may be mounted in modules within each of the components that make up the aggregate 10. Specifically, in the component A (11), the component B (12), the component C (13), the component D (14), and the component E (15) A state transmitter a 100a for diagnosing the state of the component A 11 may be included and a state transmitter b 100b for the component B 12 and a state transmitter c 100c for the component C 13, The status transmitter d 100d may be included in the D 14 and the status transmitter e 100e may be included in the component E 15 for the status diagnosis of each component.

Each of the status transmitters 100a to 100e first determines the state of each component 11 to 15 based on data on one or more pieces of status information such as a power supply operating state of the components 11 to 15, a component temperature, a communication state, Can be diagnosed. The status transmitters 100a to 100e transmit status signals to the status receiver 200 by setting different transmission frequencies according to the diagnosis result of the components.

According to one embodiment, a unique frequency can be set for each of the status transmitters 100a through 100e when the respective components 11 through 15 are normal. For example, the natural frequency for the case where the component A 11 is in the steady state may be set in the state transmitter a 100a, and similarly, in the state transmitter b 100b, The natural frequency of the case can be set. In addition, the natural frequency values of the respective state transmitters 100a to 100e may be set to different values.

According to the embodiment of the present invention, when there is an abnormality in each of the components 11 to 15, status signals having frequencies different from the natural frequencies set in the respective status transmitters 100a to 100e are outputted, To 100e can be judged based on the natural frequencies of the respective components 11 to 15.

Hereinafter, a natural frequency set in each of the status transmitters 100a to 100e with respect to the steady state of each of the components 11 to 15 is referred to as a 'reference frequency'.

Each of the status transmitters 100a to 100e analyzes and diagnoses the status of the components 11 to 15 and transmits the status signal according to the result to the status receiver 200 through wireless communication do.

The status receiver 200 according to the embodiment of the present invention can confirm the status diagnosis results for the respective components 11 through 15 through frequency analysis of the status signals received from the status transmitters 100a through 100e.

According to one embodiment of the present invention, the status receiver 200 is configured outside the aggregation 10 to directly receive status diagnostic results of one or more components that make up the aggregate 10, Can be detected.

In the meantime, when the status receiver 200 is configured within the aggregate 10 according to another embodiment of the present invention, the aggregate 10 can transmit data as well as data via communication with another device or apparatus .

Hereinafter, a specific configuration and function of the component condition diagnosis system according to an embodiment of the present invention will be described with reference to FIG. 2 and FIG.

2 is a diagram illustrating the configuration of a status transmitter 100 and a status receiver 200 according to an embodiment of the present invention.

Although only the status transmitter a 100a and the status transmitter b 100b are shown in FIG. 2 for convenience of explanation, the status transmitters a 100a and the status transmitter b 100b may be replaced by status transmitters (for example, (State transceiver 100a to state transceiver e 100e) may each transmit state signals via wireless communication with state receiver 200 as described above.

Referring to FIG. 2, state transmitter a 100a and state transmitter b 100b may each transmit state signals through communication with state receiver 200.

As described above with reference to FIG. 1, the status transmitter a 100a transmits a status signal according to the result of diagnosing the status of the component A, and the status transmitter b 100b transmits a status signal according to the status diagnosis result of the component B do. Therefore, different status signals are output from the status transmitter a 100a and the status transmitter b 100b.

However, since the detailed configuration and the configuration of each state transmitter are the same, the state transmitter 100a and the state transmitter b 100b are collectively described to describe the configuration and function of the state transmitter 100 do.

The status transmitter 100 according to an exemplary embodiment of the present invention may include a signal setting unit 110 and a signal transmission unit 120.

The signal setting unit 110 may receive data including status information of the component, and may analyze and diagnose the status of the component based on the status data. In addition, the signal setting unit 110 may set the signal characteristics according to the state diagnosis result of the component.

That is, the signal setting unit 110 diagnoses the state of the component, and allows the state transmitter 100 to output a waveform of a signal characteristic matching the diagnosis result.

2, the signal setting unit 110 may include a state data receiving unit 111, a frequency adjusting unit 112, and a signal intensity controlling unit 113. [

The status data receiving unit 111 may receive status data on status information of the detailed functions of the component and analyze the status of the components based on the data.

The state data of the component according to the embodiment of the present invention may be stored in a memory such that the detailed function of each component such as a power supply operation state of each component, a component operation temperature, a communication state, a fault occurrence, And may be data indicating the overall operation state of whether or not it operates.

Upon reception of the state data of the component from the state information checking module or the state information collecting module, the state data receiving unit 111 can perform the component state diagnosis by analyzing the state of the component based on the received state data.

According to the embodiment of the present invention, the status data receiving unit 111 not only can display the status diagnosis result numerically, but also express the influence of the status of the components on the basis of the diagnosis result as 'severity S' It is possible.

The severity (S) may be a criterion for classifying the degree of abnormality or failure of the component according to the result of the condition diagnosis of the component, and the classification of the severity (S) can be classified based on the influence according to the degree of failure of the component .

According to one embodiment, severity (S) can be classified as shown in Table 1 by classifying the degree of impact on operation or safety according to the degree of failure of the component.

standard Degree of influence Severity (S) Potential failure modes affect safety or include inconsistencies with government regulations (no prior warning) Risk without warning 10 Potential failure modes affect safety or include inconsistencies with government regulations (with prior warning) A warning hazard 9 Major failure due to potential failure Very high 8 Major degradation due to potential failure modes height 7 Loss of auxiliary function due to potential failure mode usually 6 Decreased auxiliary function due to potential failure modes lowness 5 Potential failure modes do not affect function, but are more likely to be recognized
(More than 75%) Very low 4 Potential failure modes do not affect function, but are likely to be recognized
(More than 50%) Minor 3 Potential failure modes do not affect function and are less likely to be recognized
(More than 25%) Very minor 2 There is little chance that a potential failure pattern will be recognized No influence One

Referring to Table 1, when the abnormal state or the failure state of the component is insignificant to the extent that it has no noticeable influence, the probability of recognizing the failure state is increased while the severity S is classified as 1 Classify the severity (S) rating as 2-4.

In addition, Table 1 shows that, in case of not only the probability that the fault condition is recognized but also the function of the actual component due to the fault condition, the type of the lost function is the main function and the severity S ) Classes are classified as 5 to 8, and the severity (S) rating is classified as 9 or 10 if there is a risk that the impact is very high, such as a failure due to a failure, or a violation of government regulations .

The severity (S) classification shown in Table 1 is an example, and the severity S according to the embodiment of the present invention is different depending on the type of the assembly and the components, the function of the components, the type of failure, Not only can it be set by reference, but the number of severity (S) ratings can also be set differently.

As described above, the severity S, which is a measure of the abnormality of the component through the state diagnosis result, can be calculated based on one or more state data related to the state information of the component. According to an embodiment of the present invention, as a method of calculating the severity S, the following formula (1) may be applied.

S: Severity

w: weight / a: state index

Sm: Severity Median / Cm: Diagnostic Result Median

As described above, the severity S is classified as an abnormality of the component, and is preferably represented by an integer value, and may be a value obtained by rounding off the calculation result of Equation (1).

Hereinafter, variables for calculating the severity S of Equation (1) will be described with reference to Tables 1 to 3. Table 2 and Table 3 are examples of state information data for any component in accordance with an embodiment of the present invention.

Number of Items (n) One 2 3 4 Status information power Temperature Communication error Weight (w) 8 4 2 One condition
(State index (a)) normal
(0) Bad
(One) normal
(0) Bad
(One)

Number of Items (n) One 2 3 4 Status information power Temperature Communication error Weight (w) 8 4 2 One condition
(State index (a)) Bad
(One) normal
(0) normal
(0) Bad
(One)

The status transmitter 100 according to an exemplary embodiment receives data on the status information of the components. The status transmitter 100 receives the number of status information items used for the diagnosis of the component status, . Table 2 and Table 3 show cases where the number (n) of status information items is four (n = 4).

The weight (w) is a numerical value given according to the importance of each state information item affecting the operation function of the component, and a higher weight is given to the main item.

The state index (a) according to an embodiment of the present invention refers to an index indicating whether the state information item is normal or bad.

For example, as shown in Table 2 and Table 3, the state index (a) in a normal state may be zero, and the state index (a) in a case where the state index is bad may be one.

The diagnosis result (C) according to an embodiment means a value obtained by quantifying the diagnostic result of each component of the status information items. The sum of the values obtained by multiplying the weight of each status information item and the state index, that is, C = .

Therefore, the diagnosis result C has the number of cases as many as the number of combinations of the state indexes (a) of the respective state information. In the case of Table 2, the combination of the state index a is '0101', and the combination of the state index a in the case of Table 3 may be '1001'.

In other words, the diagnosis result C has the number of cases different depending on the number of state information items n. Specifically, the number of cases of the diagnosis result C is ²ⁿ .

Accordingly, the diagnostic results (C) in Table 2 and Table 3 have a number of 2 ⁴ = 16 cases.

The median value Cm of the diagnostic result of Table 2 and Table 3 is 8 because Cm = 2 ⁿ / 2 = 2 ^n-1 as a result of the diagnosis.

On the other hand, in the case of the severity median (Sm), it has a middle value between the highest value and the lowest value among the severity (S) classes. That is, the median severity Sm in Table 1 can be Sm = (10 + 1) / 2? 5.

In the case of Table 2 and Table 3, the severity S is calculated according to Equation (1) as follows.

The severity (S) in Table 2 is rounded to 3, which is 3.125 since S? {(8 X 0) + (4 X 1) + (2 X 0) + (1 X 1)} X 5/8 = 3.125. On the other hand, the severity (S) in Table 3 is calculated as S = {(8Ex1) + (4Ex0) + (2Ex0) + (1Ex1)} x5 / 8 = 5.625, have.

As described above, as the weight w is given to each status information item, it is possible to prevent an abnormality in the main items such as an item having a significant influence on component operation, for example, a power item of Table 2 or Table 3 , The severity S calculated from the equation (1) has a value of 5 or more.

The frequency adjuster 112 according to the embodiment of the present invention can adjust the transmission frequency F2 of the status signal output according to the status diagnosis result of the status data receiver 111. [

In addition, the frequency adjusting unit 112 may set the frequency of the status signal, that is, the reference frequency F1, when the components are in a normal state. The reference frequency F1 may have a unique frequency value for each state transmitter 100 and may have a different reference frequency for different state transmitters 100. [

The transmission frequency F2 according to an embodiment of the present invention can be calculated by the following equation (2).

F2: Transmit frequency

F1: Reference frequency

T: Variable constant / S: Severity

As described above, the transmission frequency F2 means a frequency of a state signal output from the state transmitter 100 to the state receiver 200 according to the result of state diagnosis of the component, Means a natural frequency of the normal state of the component previously set for each state transmitter 100.

The variable constant T is a parameter for varying the transmission frequency F2 of the state signal output according to the result of the state diagnosis of the component. The variable constant T is a reference frequency F1 ) Is increased.

The variation constant T according to one embodiment may be determined according to the severity S calculated by the state data reception unit 111. [

Specifically, the variation constant T may be set to a different value based on a particular severity (S) rating. For example, when the value of the variation constant T is set differently based on the case where the severity S is 5, if the severity S is 5 or less as a result of the state diagnosis, the variation constant T is a first variation constant (T1). On the other hand, if the severity S is greater than 5 as a result of the state diagnosis, the variation constant T may take the second variation constant T2.

At this time, the first fluctuation constant (T1) in accordance with an embodiment of the present invention can be set to less than one value, the second change constant (T2) is in the case of the diagnosis (C), that is, 2 ⁿ ( n: number of status information items). This is because the abnormality of each state information item of the component is not always generated independently, but if an abnormality occurs in any state information, it may affect the operation of other state information. Therefore, To set the value of the variation constant (T).

According to the embodiment of the present invention, by setting the value of the variable constant T different according to the severity (S) grade as described above, when the abnormality of the component is serious, the transmission frequency F2 of the status signal and the reference It is possible to surely detect the abnormal state by maximizing the deviation of the frequency F1 and to reduce the deviation between the transmission frequency F2 and the reference frequency F1 relatively relatively when the abnormality degree of the component is small, The detection may be removed.

Hereinafter, an example of calculation of the transmission frequency F2 of the status transmitter 100 in the case of Table 2 and Table 3 will be described with reference to Equation (2). As described above, the first variation constant T1 is 1, and the second variation constant T2 is 16.

Assuming that the reference frequency F1 set in the status transmitter 100 in Table 2 and Table 3 is 100, in Table 2, since the severity S is 3, the transmission frequency F2 ) Becomes F2 = F1 + T1 XS = 100 + 1 X3 = 103.

On the other hand, in the case of Table 3, since the severity S is 6, the variation constant T has the second variation constant T2, so that F2 = F1 + T2 XS = 100 + 16 占 6 = 196.

The variation of the transmission frequency (F2) and the reference frequency (F1) is insignificant when the component abnormality is not severe as shown in Table 2, because the variation constant (T) is applied differently according to the severity (S) , And the transmission frequency F2 when the component abnormality is severe as shown in Table 3 has a value twice as large as the reference frequency F1.

The signal strength controller 113 sets and controls the strength of the status signal output from the status transmitter 100.

The signal strength controller 113 according to an exemplary embodiment adjusts the signal strength of the status transmitter 100 and the status receiver 200 to a suitable signal strength in a frequency band in which wireless communication is performed, To be correctly received and identified by the status receiver 200. [

The signal transmitter 120 according to an embodiment of the present invention diagnoses the state of components in the signal setting unit 110 and sets the frequency and intensity of the signal intensity according to the state diagnosis result, (200).

2, the signal transmission unit 120 may include a transmission signal amplifier 121 and a transmitter 122. The transmission signal amplifier 121 amplifies a state signal set by the signal setting unit 110, And the transmitter 122 finally outputs the amplified state signal from the transmission signal amplifier 121 so that the state signal can be transmitted to the state receiver 200. [

The status receiver 200 includes a signal receiver 210 and a signal analyzer 220 according to an embodiment of the present invention. The signal receiving unit 210 may include a receiver 211 and a received signal amplifier 212.

According to one embodiment, the receiver 211 receives the status signal transmitted from the status transmitter 100 via wireless communication with the status transmitter 100, and the received signal amplifier 212 receives The signal analyzer 220 may amplify the state signal to a signal suitable for analysis.

When the signal amplified by the reception signal amplifier 212 is transmitted to the signal analyzer 220, the signal analyzer 220 analyzes the frequency characteristics of the status signal by analyzing the frequency of the status signal, It is possible to judge whether or not the component corresponding to the transmitter 100 is abnormal.

At this time, the signal analyzer 220 can derive the state severity S of the component by analyzing the frequency variation constant T of the state signal.

Therefore, according to the embodiment of the present invention, as the frequency analysis of the state signal and the state severity S of the component derived therefrom are outputted through the state receiver, it is possible to identify the problem of the component, If so, you can easily identify it and take action.

3 is a diagram showing an example of state signals transmitted and received by the state transmitter 100 and the state receiver 200 of FIG.

The graphs (a) and (b) of FIG. 3 show the state signals A (100a) and B (100b) outputted during one cycle from the state transmitter a 100a and the state transmitter b 100b, respectively, FIG. The graphs (c) to (e) of FIG. 3 are graphs showing the frequency analysis results of the state signals received by the state receiver of FIG. 2 according to the states of the components A and B, respectively.

First, the reference frequency F1 of the state transmitter a 100a and the state transmitter b 100b of FIG. 2 will be described with reference to graphs (a) and (b) of FIG.

Referring to the graphs (a) and (b) of FIG. 3, it can be seen that the waveform output from the state transmitter a is repeated three times and the waveform output from the state transmitter b is repeated seven times during the same period.

As described above, the graphs (a) and (b) of FIG. 3 show the state signals when the component A and the component B are in the normal state, respectively, and the reference frequency F1 _A set in the state transmitter a is 3 , And the reference frequency (F1 _b ) set in the state transmitter b corresponds to 7.

The signal analyzer of the state receiver, which has received the state signals of the state transmitter a and the state transmitter b, calculates the frequency of each state signal as shown in the graphs (c) to (e) B status diagnosis results can be output.

The graph (c) of FIG. 3 shows a case where the state signals when the components A and B are both in the normal state, that is, when the state signals of the graphs (a) and (b) of FIG. 3 are received.

The graph (d) and the graph (e) in FIG. 3 show a state in which the component A is in the steady state and the component B is in the abnormal state and the graph d shows the state when the state severity S of the component B is 3 And the graph (e) shows the result of the state diagnosis when the state severity (S) of the component B is 6.

As described above, the component A in the graph (d), and graph (e), the steady state of the bar, the diagnosis result to the group reference frequency (F1 _A) is set to the status signal transmitted from a transmitter state is output.

On the other hand, since the component B exists in an abnormal state, the diagnostic result of the status signal transmitted from the status transmitter b is output as a value different from the predetermined reference frequency F1 _B.

In the case of the graph (d) of FIG. 3, since the abnormality severity S of the component B is 3, when the frequency variation constant T is classified on the basis of the severity S 5 as described above with reference to FIG. 2, The constant T takes a value of the first variation constant T1 = 1. Therefore, in this case, the transmission frequency (F2 _B ) becomes F2 _B = F1 _B + T1 XS = 7 + 1 X3 = 10.

3, the abnormal state severity S of the component B is 6, the variation constant T is the second variation constant T2 = 16, and the transmission frequency F2 _B ) Becomes F2 _B = F1 _B + T2 XS = 7 + 16 X6 = 103.

A comparison between the graph (d) and the graph (e) of FIG. 3 shows that while the deviation of the transmission frequency F2 and the reference frequency F1 is small when the abnormality severity S of the component is 5 or less, When the state severity S is greater than 5, it can be seen that the deviation is maximized.

The class of the first variation constant (T1) value, the second variation constant (T2) value, or the degree of severity S that is a measure of the variation constant (T) classification criterion defined in FIGS. 2 and 3 is merely an example , It can be set to a value different from the above example.

Hereinafter, with reference to FIG. 4 and FIG. 5, a description will be given of a method of transmitting a state signal indicating a state analysis result of each component in the state transmitter and a state receiver, and a method of diagnosing the state of each component based on the received state signal do.

4 is a diagram illustrating a process of analyzing the state of each component and transmitting a status signal according to the flow of time according to an embodiment of the present invention.

First, the reference frequency F1 is set in the state transmitter (S410). The reference frequency F1 may be set as a frequency specific to each state transmitter and a different reference frequency F1 may be set for different state transmitters, i.e., state transmitters for different components. In addition, a signal strength that is desirable for wireless communication with the status receiver may be set in the status transmitter (S420).

Thereafter, the status transmitter receives data on the status information of the component from the component (S430), and performs a severity (S) analysis based on the received status data (S440).

The state transmitter determines whether the state severity S of the component has a value of 5 or less in step S450 according to the result of the analysis of the severity S. If the value of the state severity S is 5 or less, The frequency variation constant T for the calculation is set to the first variation constant T1 in step S460 and the frequency variation constant T is set to the second variation constant T2) (S470).

According to another embodiment of the present invention, the reference value for distinguishing the severity S may be set to a value other than 5 as described above.

The state transmitter sets the transmission frequency F2 of the state signal to be transmitted to the state receiver in accordance with the value of the frequency variation constant T set in step S460 or S470 in step S480 and sets the transmission frequency F2 The status signal of the waveform is transmitted to the status receiver (S490).

FIG. 5 is a diagram illustrating a process of receiving a status signal and diagnosing a status of each component according to an exemplary embodiment of the present invention. Referring to FIG.

First, the status receiver receives a status signal including status information of a component on which the status transmitter is mounted through wireless communication with the status transmitter (S510). Thereafter, the state receiver amplifies the received state signal to facilitate analysis (S520).

The state receiver performs an analysis of the amplified state signal to determine an abnormal state of the component (S530). The state signal analysis according to an exemplary embodiment may be performed through frequency analysis of the status signal and may be performed by comparing the transmission frequency F2 of the status signal with the reference frequency F1 of the status transmitter transmitting the status signal .

According to the result of the state signal analysis in step S530, the state receiver derives the frequency variation constant T of the state signal and determines whether or not the variation constant T has a value smaller than the second variation constant T2 (S540).

As a result of the determination in step S540, if the variation constant T has a value smaller than the second variation constant T2, the state receiver can determine that the state severity S of the component is 5 or less (S550) If the variation constant T has a value equal to or greater than the second variation constant T2, it can be determined that the state severity S of the component corresponds to a value greater than 5 in operation S560.

According to one embodiment of the present invention, the state receiver can not only determine whether the severity S is less than or equal to 5, but also determine the severity (S) value of the component itself .

Finally, the state receiver outputs a frequency analysis result, a variation constant (T), and a severity (S), which are derived through the state signal analysis, as an analysis result, so that the state receiver can check the state of the component and take measures (S570).

At this time, the state receiver according to the embodiment outputs the state analysis result differently according to the severity S derived in accordance with the step S550 or S560, thereby performing an efficient and immediate action according to the degree of the component abnormal state .

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: aggregate
11 to 15: Components A to E
100: status transmitter
110: Signal setting section
111: Status data receiver
112:
113: Signal strength control section
120: Signal transmitter
121: Transmit signal amplifier
122: Transmitter
200: Status receiver
210:
211: receiver
212: Receive signal amplifier
220: Signal Analysis Unit

Claims (13)

CLAIMS What is claimed is: 1. A component state diagnostic system for individually checking states of each of one or more components that make up an assembly,
One or more status transmitters each mounted within the one or more components; And
And a status receiver for receiving status signals for each of the components by performing wireless communication independently with each of the status transmitters,
Wherein each of the one or more status transmitters comprises:
Receiving status data on state information of at least one item relating to the detailed functions of the component on which the state transmitter is installed, and analyzing the state of the component to perform a state diagnosis on the abnormality of the component, A status data receiving unit for digitizing the status diagnosis result,
Wherein the state transmitter is configured to receive the state data of the state transmitter as a frequency of a state signal output when the component on which the state transmitter is mounted is in a normal state, A signal setting unit including a frequency adjusting unit for adjusting a transmission frequency, which is a frequency of the output state signal; And
And a signal transmitter for transmitting the status signal conforming to the frequency characteristic set by the signal setting unit to the status receiver,
The status data receiving unit,
Calculating a severity corresponding to a criterion for classifying the degree of abnormality or the degree of failure of the component on which the status transmitter is mounted based on the status diagnosis result,
The severity,
Wherein the abnormality is proportional to a sum of weights given to at least one item among the one or more status information items. delete The method according to claim 1,
The reference frequency set in the frequency adjusting unit is set to a predetermined frequency,
Characterized in that each of the one or more status transmitters is set to a different value for each of the different status transmitters. delete The method according to claim 1,
Wherein a difference between the transmission frequency adjusted by the frequency adjusting unit and the reference frequency set in the frequency adjusting unit,
And wherein the component status diagnostic system is proportional to the severity. The method according to claim 1,
The signal setting unit,
And a signal strength controller for adjusting the strength of the status signal to conform to a frequency band of wireless communication performed between the status transmitter and the status receiver,
Wherein the signal transmitter comprises:
A transmission signal amplifier for amplifying the status signal according to a signal characteristic adjusted or set by the signal setting unit; And
And transmit the amplified status signal to the status receiver via wireless communication with the status receiver. The method according to claim 1,
The status receiver comprises:
A signal receiver for receiving the status signals received from the one or more status transmitters, respectively; And
And a signal analyzer for diagnosing an abnormality of each of the components corresponding to each of the status signals by performing frequency analysis on each of the received status signals. 8. The method of claim 7,
The status receiver comprises:
And outputting an analysis result or diagnosis result of the signal analysis unit to monitor the state of the at least one component in real time. 1. A component state diagnosis method for individually checking states of the respective components, the state transmitter being individually mounted in one or more components constituting an assembly,
(a) setting, in each of the status transmitters, a reference frequency, which is a frequency of a status signal output when a component on which the status transmitter is mounted is in a normal state, to a frequency specific to each status transmitter;
(b) receiving status data on status information of one or more items relating to the detailed functions of the component on which the status transmitter is mounted;
(c) analyzing, based on the status data, a severity corresponding to a criterion for classifying an abnormality degree or a failure degree of the component on which the status transmitter is mounted;
(d) setting a transmission frequency corresponding to a frequency of a status signal reflecting a result of status diagnosis of the component; And
(e) transmitting the status signal according to the set transmission frequency characteristic to the status receiver through wireless communication with the status receiver; Lt; / RTI >
After the step (c)
And determining a variable constant value that varies the transmission frequency value according to the severity of the component calculated as a result of the severity analysis,
And the difference between the transmission frequency and the reference frequency increases as the variation constant has a larger value. delete 10. The method of claim 9,
Wherein the step of determining the variable constant value comprises:
Wherein the second variation constant is determined as a first variation constant when the severity of the calculated component is less than or equal to the median severity and when the severity of the component is greater than the median severity, State diagnostic method. 12. The method of claim 11,
The first variation constant has a value of 1 or less,
Wherein the second variation constant has a value of 2 &^lt; ^{n >} or more when the number of the status information items is n,
Wherein the difference between the transmission frequency and the reference frequency is proportional to the variation constant. delete

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