CN109115264A - The error checking system of engineering machinery - Google Patents

The error checking system of engineering machinery Download PDF

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Publication number
CN109115264A
CN109115264A CN201810645311.1A CN201810645311A CN109115264A CN 109115264 A CN109115264 A CN 109115264A CN 201810645311 A CN201810645311 A CN 201810645311A CN 109115264 A CN109115264 A CN 109115264A
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CN
China
Prior art keywords
error
engineering machinery
value
analysis server
control unit
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Pending
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CN201810645311.1A
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Chinese (zh)
Inventor
孙钟镐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hyundai Doosan Infracore Co Ltd
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Doosan Infracore Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doosan Infracore Co Ltd filed Critical Doosan Infracore Co Ltd
Publication of CN109115264A publication Critical patent/CN109115264A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26Indicating devices
    • E02F9/267Diagnosing or detecting failure of vehicles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/10Services

Abstract

The present invention relates to a kind of error checking system of engineering machinery, the error checking system of the embodiment of the present invention includes: control unit, is set to engineering machinery and manages the inspection for the various mistakes for including in the engineering machinery;And Analysis server, it is connect by telecommunication with the control unit and receives the error code, in the case where there is multiple error codes, after multiple error codes are compared to the checks sequence for determining multiple error codes with the analysis data inputted, determination result is re-transmitted to the control unit.

Description

The error checking system of engineering machinery
Technical field
The present invention relates to a kind of error checking systems of engineering machinery, more specifically, are related to a kind of in the multiple mistakes of generation In the case where accidentally, the error checking system of the engineering machinery of multiple mistake can be effectively checked.
Background technique
Engineering machinery substantially instigates the machinery for civil construction or construction.In general, engineering machinery has engine With the hydraulic pump that is acted of power by engine, and using the working oil that hydraulic pump is discharged is travelled or driven and is various Apparatus for work.
For example, the driving body for the migration that the excavator of the type as engineering machinery is equipped by and being equipped on row Sail top cycle body and the apparatus for work composition of body and 360 degree rotation.In addition, excavator is including the use of in the traveling electricity of traveling It machine and is used in top cycle body and swings the oscillating motor of (swing) and be used in the swing arm cylinder, dipper cylinder, shovel of apparatus for work Struggle against the driving devices such as cylinder and optional cylinder.In addition, these driving devices are by from the variable capacity type by engine or motor drive The working oil driving of hydraulic pump discharge.
In this way, since engineering machinery includes many equipments, thus the inspection to various equipments is required, and be possible to from various A variety of wrong (error) occur multiplely simultaneously for equipment.
But at the same time and occur multiplely it is multiple mistake in, it is possible to both exist because of the movement to engineering machinery The mistake for generating sensitive influence and needing promptly to check at once, although there is also need to check but not at once to engineering machinery The mistake that has an impact of driving.
In addition, at the same time and occur multiplely it is multiple mistake in, it is possible to there is also due to the generation of other mistake The mistake occurred indirectly.This mistake can solve together during checking occurrence cause that is other and solving mistake.
If however, but type and the situation occurred etc. that do not consider foregoing mistake, institute has been examined successively in operator The operation for restarting engineering machinery after the multiple mistakes for having generation again, then became in the presence of the time required for the inspection of mistake Long problem.
In addition, there is also due to first checking the mistake up for being resolved naturally during checking other mistake The problem of wasting the review time.
Summary of the invention
Technical task
The embodiment of the present invention provides a kind of checks sequence optimization made in the case where multiple mistakes occur to mistake Come shorten the whole review time and improve check efficiency engineering machinery error checking system.
Technical solution
According to an embodiment of the invention, the error checking system of engineering machinery includes: control unit, it is set to the engineering Inspection that is mechanical and managing various wrong (error) that include in the engineering machinery;And Analysis server, with the control Portion processed receives error code by telecommunication, in the case where there is multiple error codes, by multiple mistakes After accidentally code is compared to the checks sequence for determining multiple error codes with the analysis data inputted, by determination result It is re-transmitted to the control unit.
The operating environment of the engineering machinery can be considered in the Analysis server, according to various equipments, different time sections Or Different climate differently determines the checks sequence.
The control unit may include the display unit of present situation occurring and for operator with the mistake of error code display equipment Input the operation portion of order.
In addition, if be judged as the multiple error codes for being shown in the display unit checks sequence be not suitable for and by making Dealer corrects the checks sequence to multiple error codes by the operation portion, then the control unit can pass corrected value It is handed to the Analysis server, the corrected value is reflected in the analysis data by the Analysis server.
The Analysis server can temporarily store the school before the corrected value to be reflected in the analysis data Positive value, if the number set repeatedly receives corrected value identical with the corrected value, the Analysis server with Shangdi The corrected value temporarily stored is reflected in the analysis data.
The Analysis server can be applicable in preset weighting to the error code transmitted from the control unit It is worth and exports aggregate value, and the aggregate value exported is compared with preset limiting value, through comparing, if described total Value is greater than the limiting value, then improves the Inspection Order of the error code.
The Analysis server can consider the wrong generation according to the past inspection resume to the error code It, will be to the wrong generation after the checks sequence of the error code is decided to be relatively when the occurrence frequency of code in the case where order The weighted value of code is set to higher.
After being shown in multiple error codes of the control unit according to checks sequence inspection, if operator is determined as The checks sequence is not suitable for and corrects the checks sequence to multiple error codes, then the control unit can be by corrected value It is transferred to the Analysis server.In addition, the Analysis server can change the weighted value of the error code and make multiple The checks sequence of the error code is close to the corrected value.
In the case where the variation of operating environment or weather has an impact the error code, if described in occurring The situation of error code corresponds to the operating environmental condition or weather conditions having an impact, then the Analysis server can be improved To the weighted value of the error code.
The effect of invention
According to an embodiment of the invention, the error checking system of engineering machinery can make in the case where multiple mistakes occur The checks sequence of mistake is optimized to shorten the whole review time and improve inspection efficiency.
Detailed description of the invention
Fig. 1 is the structure chart of the error checking system of the engineering machinery of one embodiment of the invention.
Fig. 2 is the inspection for the error code that change is shown in control unit in the error checking system for the engineering machinery for showing Fig. 1 The figure for the step of looking into sequence.
Fig. 3 is that error code is shown in by a point different runing times in the error checking system for the engineering machinery for showing Fig. 1 The figure of the state of control unit.
Fig. 4 is the precedence diagram for showing the error checking procedure of the error checking system of engineering machinery of Fig. 1.
Fig. 5 and Fig. 6 is the concept of the artificial neural network algorithm of the error checking system of the engineering machinery suitable for Fig. 1 Figure.
Symbol description
100: engineering machinery
101: the error checking system of engineering machinery
500: Analysis server
Specific embodiment
Below with reference to the accompanying drawings the embodiment of the present invention is described in detail, so that in the technical field of the invention one As technical staff be easy implement.The present invention can by it is a variety of it is different in the form of realize, however it is not limited to embodiment described herein as.
It should be noted that attached drawing is that schematically, there is no illustrate according to reduced scale.For the clarity in figure and conveniently Property, the relative size and ratio of part as shown in the figure are exaggerated or are reduced and illustrated in size, and arbitrary dimension is exemplary , without being restrictive.In addition, using phase for appearing in identical works, element or component in more than two figures Same reference marks, to embody similar feature.
The embodiment of the present invention is specifically illustrated in ideal embodiment of the invention.As a result, it is envisioned that graphic Various deformation.Therefore, embodiment is not limited to the specific modality in illustrated region, for example, further including form caused by manufacturing Deformation.
It is carried out referring to error checking system 101 of the Fig. 1 to Fig. 4 to the engineering machinery 100 of one embodiment of the invention Explanation.
As illustrated in fig. 1, the error checking system 101 of the engineering machinery 100 of one embodiment of the invention includes control unit 150 and Analysis server 500.
Control unit 150 is set to engineering machinery 100 and shows the various dresses for including in the engineering machinery 100 with error code Present situation occurs for standby mistake.In addition, control unit 150 is used in the inspection that operator manages mistake.Specifically, control unit 150 It may include the operation portion for display unit and operator's input order that present situation occurs with the mistake of error code display equipment.Separately Outside, in one embodiment of this invention, can be independently with the display unit and operation portion of control unit 150, it can also be such as touching Control panel is integrally formed with display unit and operation portion.That is, error code can be not only shown in picture by control unit 150, and And can also input unit by touch panel or in addition to this it is defeated from operator's operation control portion 150 or to control unit 150 Enter information or order.
In addition, for example having engine fuel injection pressure anomaly, engine fuel injector by the mistake that control unit 150 is shown (injector) defect, engine motor oil filter pressure exception, main pump pressure anomaly, main pump oil strainer pressure anomaly Deng.
In addition, in one embodiment of this invention, occurring to be not limited to content above-mentioned in the mistake of engineering machinery 100, also It may include a variety of mistakes known in the general technical staff in this field.
In addition, control unit 150 can connect letter of receiving and sending messages by telecommunication with to aftermentioned Analysis server 500 Number.Control unit 150 and Analysis server 500 can by a variety of methods known in the general technical staff in this field without Line connection.
Analysis server 500 is connect with control unit 150 by telecommunication, and has the analysis data inputted.At this In one embodiment of invention, in the case where multiple error codes occur, the analysis data for being input into Analysis server 500 include For determining the information of the checks sequence to multiple error codes.For example, analysis data may include that can determine to multiple mistakes The accidentally information of the mutual order of priority of code.That is, analysis data can have and be classified as in multiple error codes because to engineering Although the movement of machinery 100 generates sensitive influence and the error code that needs promptly to check at once and needs to check but not vertical The error code for generating big influence to driving engineering machinery 100 is carved, and assigns the information of weighted value to the former error code.
In addition, analysis data can also have to can be during checking other error code in multiple error codes The information of the error code solved the problems, such as together.
In addition, analysis data, which can have the error code accumulated in a period of having set, checks resume, and can be right The occurrence frequency of error code assigns weighted value.It herein, can be according to the type and operation ring of engineering machinery 100 during having set Border is diversely set.
In addition, analyzing data in the case where the variation of operating environment or weather has an impact error code It may include the information of the various operating environments being had an impact to error code or climate change.
In addition, analysis data can also include the operator corresponding to the error code for checking engineering machinery 100 at the scene Inspection result feedback information.
Analysis server 500 can receive error code from control unit 150 can in the case where there is multiple error codes Multiple error codes and analysis data above-mentioned to be compared to it after the checks sequence for determining multiple error codes again As a result it is re-transmitted to control unit 150.Then, operator can effectively examine according to the checks sequence for being shown in control unit 150 Look into error code.At this point, checks sequence can be arranged as checking in multiple error codes with order of priority by Analysis server 500 The error code for needing promptly to check at once due to the movement to engineering machinery 100 generates sensitive influence, and order inspection later Look into the error code that will not generate big influence to driving engineering machinery 100 at once.The error code for being classified as rear order can It is checked with being retained according to the judgement of operator, so retained error code can be checked in review time affluence, or It can also be checked together when another mistake occurs.
In addition, have in being judged as multiple error codes can be in the mistake for checking other error code for Analysis server 500 In the case where the error code solved the problems, such as together in journey, the error code can be configured to rear order.
In addition, Analysis server 500, which can have the error code accumulated in a period of having set, checks resume, and can be with Weighted value is assigned to the occurrence frequency of error code.It herein, can be according to the type and operation of engineering machinery 100 during having set Environment is diversely set.For example, can be during having set 5 years.
In addition, the operating environment of engineering machinery 100 can be considered according to various equipments, different time in Analysis server 500 Section or Different climate differently determine checks sequence.
In addition, Analysis server 500 can will correspond to the operator for checking the error code of engineering machinery 100 at the scene The feedback information of inspection result be reflected in analysis data.Specifically, if operator is shown in control according to checks sequence inspection It is judged as that checks sequence is not suitable for and corrects the checks sequence to multiple error codes after multiple error codes in portion 150 processed, then Corrected value can be transferred to Analysis server 500 by control unit 150, and corrected value can be reflected in analysis by Analysis server 500 Data.At this point, Analysis server 500 can temporarily store the corrected value before corrected value to be reacted on to analysis data, if instead The multiple number set receives corrected value identical with corrected value with Shangdi, then can be reflected in the corrected value temporarily stored Analyze data.Thus, it is possible to prevent operator from correcting the checks sequence of error code because judging incorrectly or making mistakes, and make so The corrected value being corrected is reflected in analysis data.
Fig. 2, which is exemplarily illustrated in the error checking system 101 of the engineering machinery of one embodiment of the invention, changes display In the checks sequence of the error code of control unit 150 the step of.It as illustrated in Figure 2, can be to the mistake shown according to order of occurrence Accidentally code is applicable in occurrence frequency and changes checks sequence, and later, operator terminates to execute correction after checking.
Error code is shown in addition, Fig. 3 shows a point different runing times in the error checking system 101 of engineering machinery In the state of control unit 150.The error checking system 101 of the engineering machinery of one embodiment of the invention be not only only show it is multiple Property mistake is controlled if the corrected value of operator's repeatedly rectifying inspection sequence is accumulated by the analysis data in Analysis server 500 Portion 150 processed can also be shown to the preferred list for checking error code of different runing times (Operation Hours).
Referring to Fig. 4 to the action process of the error checking system 101 of the engineering machinery of one embodiment of the invention into Row is described in detail.
Firstly, as illustrated in figure 4, control unit 150 can show the mistake occurred in engineering machinery 100 according to order of occurrence Code.In addition, the error code occurred can be transmitted to Analysis server by control unit 150.
The multiple error codes transmitted from control unit 150 can be compared point by Analysis server 500 with analysis data Analysis.In addition, through comparative analysis, it can be determined that whether need for the checks sequence of error code to be changed to different from order of occurrence.
It needs to change checks sequence if being judged as, reflect the information of analysis data and reconfigures the inspection of error code Sequentially, control unit 150 can receive information from Analysis server 500 and show error code according to the checks sequence being changed.
Conversely, not needing change checks sequence if being judged as, control unit 150 just shows wrong generation according to order of occurrence Code.
Next, operator can be according to the sequential search error code for being shown in control unit 150.In addition, if operator It is judged as that checks sequence is suitable after checking error code, then can includes checking detail, and will check detail by control unit 150 It stores to Analysis server 500.
Conversely, checking error code through operator, if being judged as, the checks sequence of error code is unsuitable, can be with The checks sequence of error code is corrected, and the corrected value is inputted by control unit 150.
Error code is analyzed since Analysis server 500 can not grasp live situation completely, thus operator is practical During checking error code at the scene, it is possible to may feel that checks sequence is not suitable for.
In addition, during repeated multiple times inspection, it is possible to the item that can be checked by operator and practical to analysis The inspection detail that server 500 is reported is not quite identical and causes the analysis of Analysis server 500 that error occurs.
But the error checking system 101 of the engineering machinery of one embodiment of the invention will appreciate that analysis result not Adaptability is simultaneously corrected it, it is thus possible to improve the accuracy of analysis.
But analysis data are had an impact for the misjudgment or fault for preventing operator, in an implementation of the invention In example, the corrected value that operator is inputted is not reflected in analysis data directly by Analysis server, but after interim storage, if connecing The number that identical corrected value has been set or more is received, then the corrected value can be reflected in analysis data by Analysis server 500. For example, the number set can be three times.In addition, if time by having set, which can be initialised.That is, If Analysis server 500 receives identical corrected value in nearest 3 years more than three times, which can be reflected in point Analyse data.
By this structure, the error checking system 101 of the engineering machinery of one embodiment of the invention can be more in generation Make to optimize the checks sequence of mistake in the case where a mistake to shorten the whole review time and improve inspection efficiency.
In addition, in one embodiment of this invention, it is wrong that artificial neural network algorithm analysis can be used in Analysis server 500 The accidentally checks sequence of code.
Fig. 5 is able to use in the Analysis Service of the error checking system 101 of the engineering machinery of one embodiment of the invention The concept map of the artificial neural network algorithm of the mode based on data of device 500, Fig. 6 are the modes for showing each node processing data Concept map.
As shown in Figure 5 and Figure 6, each node is the unit of information processing, can and the multiple information processing units of column processing.Respectively Node is configured to receive the data of other multiple nodes and transmits result to next node after handling.Herein, each node The signal value for being applicable in each node of weighted value is transferred to next node and having the link connection of weighted value.Each nerve Although first node receives signal value from multiple nodes, it is handled and exports a signal value.To the signal of each node Value is applicable in intrinsic weighted value and transmits each signal value to next node.Herein, each node can be considered as multiple wrong factors. That is, if such as engine fuel injection pressure anomaly, engine fuel injector (injector) defect, engine motor oil filtering occurs The mistakes such as device pressure anomaly, main pump pressure anomaly, main pump oil strainer pressure anomaly, then be applicable in it preset weighting It is worth and is passed to next node.At this point, runing time, the engineering of the position, equipment currently equipped can be considered in weighted value Mechanical type, the date of manufacture of engineering machinery, the occurrence frequency of the mistake, operating environmental condition, weather conditions etc. are set.
Next node receiving degree has been applicable in the value of weighted value to each wrong factor and has added up to it.In addition, root Preset value is exported according to whether the aggregate value is greater than preset limiting value.For example, if more than preset pole Limit value then exports 1, otherwise exports -1.This artificial neural network is implemented to learn by repetitious adjustment.Herein, it just weights It, can in the case that faulty frequency is high in multiple wrong factors or has other environment, season reason or other reasons for value It is higher the weighted value to be set to.For example, can be according to environment or seasonal factor, the characteristic of the relevant mistake of machine oil can not Together.This is because according to season, it is possible to which the temperature that machine oil more easily occurs rises or deterioration.In addition, period or air pressure etc. It can also be become will be because.This weighted value can accumulate past resume or analysis data etc. to export, and in other words, being can be with Derived value is routinely changed by the study of artificial neural network.
This signal processing can be handled by many kinds of function, and have in this activation primitive step function, sign function, S type function, linear function, hyperbolic tangent function etc..Step function output 1, otherwise exports 0 if aggregate value over-limit condition. If aggregate value over-limit condition, then symbol function output 1, otherwise, output -1.S type function calculates Y value according to X value, and Y has 0 ~1 range.Linear function is the function of Y and X value having the same.Hyperbolic tangent function is deformed to S type function Function is conducive to Fast Learning relative to S type function.Since step function and sign function export the knot of non-black i.e. white logic Fruit value, thus may be mainly that S type function or hyperbolic tangent function are weighted the study of value more favorably.
In the case where Analysis server 500 is using foregoing artificial neural network, Analysis server 500 is to from control The error code that portion 150 processed transmits is applicable in preset weighted value to export aggregate value, and by the aggregate value exported and in advance The limiting value first set is compared, and through comparing, if the aggregate value is greater than limiting value, can be improved the inspection of error code Order.
In addition, Analysis server 500 is according to the past inspection resume to error code, in the generation for considering error code After the checks sequence of error code is decided to be relatively when frequency in the case where order, the weighted value of error code will can be set It is highlyer fixed.
In addition, in the case where the variation of operating environment or weather has an impact error code, if occurring wrong Accidentally the situation of code corresponds to the operating environmental condition or weather conditions that have an impact, then Analysis server 500 can be improved pair The weighted value of the error code.
In addition, if operation is judged as after being shown in the multiple error codes for checking control unit 150 according to checks sequence inspection Checks sequence is not suitable for and corrects to the checks sequences of multiple error codes, then corrected value can be transferred to point by control unit 150 Server 500 is analysed, Analysis server 500 can be such that the checks sequence of multiple error codes connects with the weighted value of altering error code Nearly corrected value.
In this way, in the error checking system 101 of the engineering machinery of one embodiment of the invention, in Analysis server 500 The weighted value to multiple parameters is applicable in by repetitious study immediately using in the case where artificial neural network as aforementioned, because And the checks sequence for the code that can quickly and more accurately judge incorrectly.
Although the embodiment of the present invention is illustrated above with reference to attached drawing, the technical field of the invention it is general Technical staff be understood that under the premise of not changing technical idea of the invention or Essential features, can be with other specific shapes State implements the present invention.
Therefore, embodiments described above should be understood as being exemplary in all respects, without being restrictive, this The range of invention is embodied by aftermentioned claims, the derived institute from the meaning, range and its equivalent concepts of claim Have altered or modification form is interpreted as falling within the scope of the present invention.

Claims (8)

1. a kind of error checking system of engineering machinery characterized by comprising
Control unit is set to the engineering machinery and manages the inspection for the various mistakes for including in the engineering machinery;And
Analysis server is connect by telecommunication with the control unit and receives error code, is there is multiple mistakes In the case where code, multiple error codes are compared to determine multiple wrong generations with the analysis data inputted After the checks sequence of code, determination result is re-transmitted to the control unit.
2. the error checking system of engineering machinery according to claim 1, which is characterized in that
The Analysis server considers the operating environment of the engineering machinery, according to various equipments, different time sections or different gas Time differently determines the checks sequence.
3. the error checking system of engineering machinery according to claim 1, which is characterized in that
The control unit includes that the display unit of present situation occurs and inputs for operator to order with the mistake of error code display equipment Operation portion,
If being judged as, the checks sequence for the multiple error codes for being shown in the display unit is not suitable for and is passed through by operator The operation portion corrects the checks sequence to multiple error codes,
Then corrected value is transferred to the Analysis server by the control unit,
The corrected value is reflected in the analysis data by the Analysis server.
4. the error checking system of engineering machinery according to claim 3, which is characterized in that
The Analysis server temporarily stores the corrected value before the corrected value to be reflected in the analysis data,
If the number set repeatedly receives corrected value identical with the corrected value with Shangdi, the Analysis server will The corrected value temporarily stored is reflected in the analysis data.
5. the error checking system of engineering machinery according to claim 1, which is characterized in that
The Analysis server is applicable in preset weighted value to the error code transmitted from the control unit and exports Aggregate value, and the aggregate value exported is compared with preset limiting value, through comparing, if the aggregate value is greater than institute Limiting value is stated, then improves the Inspection Order of the error code.
6. the error checking system of engineering machinery according to claim 5, which is characterized in that
The Analysis server is according to the past inspection resume to the error code, in the generation for considering the error code After the checks sequence of the error code is decided to be relatively when frequency in the case where order, by the weighting to the error code Value is set to higher.
7. the error checking system of engineering machinery according to claim 5, which is characterized in that
After being shown in multiple error codes of the control unit according to checks sequence inspection, if operator be determined as it is described Checks sequence is not suitable for and corrects the checks sequence to multiple error codes,
Then corrected value is transferred to the Analysis server by the control unit,
The Analysis server changes the weighted value of the error code and keeps the checks sequence of multiple error codes close The corrected value.
8. the error checking system of engineering machinery according to claim 5, which is characterized in that
In the case where the variation of operating environment or weather has an impact the error code, if the mistake occurs The situation of code corresponds to the operating environmental condition or weather conditions having an impact, then the Analysis server is improved to the mistake The accidentally weighted value of code.
CN201810645311.1A 2017-06-22 2018-06-21 The error checking system of engineering machinery Pending CN109115264A (en)

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KR1020170079383A KR20190000261A (en) 2017-06-22 2017-06-22 Error checking system for construction machinery
KR10-2017-0079383 2017-06-22

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Application publication date: 20190101