WO2014045396A1

WO2014045396A1 - Operation management device of self-propelled mining equipment

Info

Publication number: WO2014045396A1
Application number: PCT/JP2012/074208
Authority: WO
Inventors: 庄平山形; 力也田尻; 原　有希; 笠井　嘉; 大脇　従道; 裕吉川; 内田　貴之; 亮上野; 廣渡　信芳
Original assignee: 日立建機株式会社
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2014-03-27

Abstract

The purpose of the present invention is to enable detailed analysis of the state of each of multiple pieces of mining equipment in a management center at a location remote from the site where the mining equipment operates. This operation management device of self-propelled mining equipment is provided with a wireless receiving unit (31) which wirelessly receives numerical value information measured by multiple sensors (20) provided on the mining equipment, and time information of the times of measurement; a graph creation unit (41) which, on the basis of the numerical value information and the time information, creates a time-series graph (G) showing the measured values of one of the sensors (20), and a time-series graph showing the measured values of one or multiple other sensors (20) relating to the one sensor (20); a screen generation unit (45) which creates an equipment state screen (60) displaying the one graph (G) and the other graph (G) adapted to the same time axis; and a display (33) which displays the equipment state screen (60).

Description

Operation management device of self-propelled mining machine

The present invention relates to an operation management device for a self-propelled mining machine that manages the operation of a mining machine of a hydraulic or electric shovel, a dump truck, or a mining machine.

For example, the main operations in the mine are mining and beneficiation. Mining is for mining ores containing useful minerals from mines, and beneficiation is for selectively extracting useful minerals from mined minerals. Mining is for digging out of the mine where veins exist, and beneficiary is not conducted at the drilling site, but an independent beneficiary yard is installed. Various facilities necessary for beneficiary are installed in this beneficiary yard. In addition, since there is no useful mineral in the sediment covering the veins, a waste disposal site is also set up.

A digging machine consisting of a loader type or backhoe type shovel is used for mining, and an electric type or hydraulic type is used as a power source. Also, in consideration of work efficiency, super-large-sized digging machines are used. On the other hand, a dump truck as a transport machine is used to transport minerals from a mining site to a beneficiary yard, and also to transport waste rock and the like to a disposal site. A plurality of dump trucks are used for one drilling machine. Depending on the distance from the mining site to the mining yard etc., it is usual that 3 to 5 dump trucks take charge of transportation for one drilling machine.

Work at the mine site is usually performed 24 hours a day, 365 days a week, and mining machines such as drilling machines and dump trucks need to be operated as efficiently as possible without failure . For this purpose, each mining machine is provided with sensors at various places, and the various sensors are configured to detect the operating state of each operating place. When these sensors detect that there is an excessive load and a severe operating condition is detected, a warning may be issued to the operator because there is a possibility of failure.

As described above, in the case of mining machines, since the operation time is excessive, maintenance operations such as maintenance and inspection can not be performed frequently. In addition, even if maintenance work is performed, it is necessary to carry out efficiently in a short time. For this purpose, a management center is installed at a predetermined position in the mine. The mining machine is equipped with a wireless communication device, and data measured by various sensors are wirelessly communicated to the management center. In this way, each mining machine operating at the mining site is managed.

As a technology of this type, Patent Document 1 discloses that a server of a management unit that performs wireless communication with a work machine manages the work machine. In the technology of Patent Document 1, the hydraulic output measurement data is accumulated in the server of the management unit, thereby saving labor and improving efficiency of the performance decrease diagnosis operation of the hydraulic output performance.

JP, 2011-38273, A

By the way, data wirelessly communicated from each mining machine is data indicating the operation status of the mining machine in time series. The management center is equipped with a computer, and the operation status of the mining machine is displayed by displaying data wirelessly communicated from the mining machine on a display connected to the computer. Maintenance personnel and engineers (hereinafter, maintenance personnel etc.) visually analyze the data displayed on the display and analyze the state of each part of the mining machine.

A graph based on the measurement value of the sensor can be displayed on the display of the control center, and the maintenance personnel can visually recognize this graph to analyze the state of the mining machine. However, detailed analysis can not be performed only by displaying the graph. Parts of the mining machine are related to each other because they are affected by the conditions of other parts. Therefore, even if there is no particular problem in the graph displayed on the display, if there is an abnormality in the related part, it will be affected.

In this case, even if there is no problem with the numerical values of the graph at present, there is a possibility that the situation may develop into a failure or failure in the future. Maintenance personnel etc. can not recognize that by simply displaying a graph based on the measurement value of the region to be analyzed on the display.

Therefore, an object of the present invention is to make it possible to analyze in detail the state of each mining machine at a control center at a position separated from the site where a plurality of mining machines operate.

In order to solve the above problems, the operation management apparatus for a self-propelled mining machine of the present invention is an operation management for a self-propelled mining machine that manages the mining machine based on information wirelessly communicated from a plurality of mining machines. The apparatus is a wireless reception unit that wirelessly receives numerical information measured by a plurality of sensors provided in the mining machine, and indicates a measurement value of any one of the sensors based on the numerical information. A graph generation unit for generating a time-series graph showing time-series graphs and measurement values of one or more other sensors affecting measurement values of the one sensor, and the one corresponding to the same time axis A screen creation unit creates a machine state screen on which one graph and the other graph are displayed, and a display device displays the machine state screen.

In addition, when the measured value of the one sensor is within the appropriate range, the measured value of the one sensor becomes abnormal in the future based on the numerical information of the one sensor and the numerical information of the other sensor. And an icon generation unit for generating an icon indicating the precursor when the precursor judgment unit predicts the precursor, and the screen generation unit The icon may be displayed corresponding to the same time axis.

Further, the information processing apparatus further includes an association degree information storage unit that stores association degrees of sensors associated with the plurality of sensors with respect to each of the plurality of sensors, and the sign determination unit refers to the association degree information storage unit. The sign may be predicted based on numerical information of the other sensor related to the sensor and the degree of association.

The screen creation unit may change the background of the machine state screen in a predetermined time range before and after the indication icon.

In addition, the screen creation unit may change the color or tone of the background of the machine state screen stepwise according to the predictive level when the predictive alarm is divided into a plurality of predictive levels. Good.

Further, the screen creation unit may display the other graph in correspondence with the same time axis in order from the other graph having the largest change rate of the numerical information.

Further, the screen creation unit may display the other graph in correspondence with the same time axis in order from the other graph having the highest degree of association.

The present invention not only displays the graph of the sensor to be analyzed, but also the graph of one or more other sensors that affect the measured value of the sensor, on the display device of the control center, corresponding to the same time axis. By displaying, it is possible to analyze in detail the site measured by the sensor. In addition, by displaying an alarm icon, which is one of the alarms, it is possible to grasp at a glance that, even if the current graph is appropriate, there may be a possibility that a failure or failure may occur in the future. .

It is explanatory drawing which shows an example of the site which mines the ore in a mine. It is a side view of a dump truck as an example of a mining machine. It is a block diagram which shows the structure of a dump truck and a management center. It is a block diagram showing composition of a display control part. It is a figure which shows an example of a machine list screen. It is a figure which shows an example of a machine state screen.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, an example in which a digging machine (hydraulic shovel) and a dump truck are applied as an example of a mining machine will be described, where the working site where work is performed using the mining machine is a mining site. It can be done.

FIG. 1 shows an example of a mine work site. In the figure, a drilling machine 1 and a dump truck 2 are shown as mining machines. The electric or hydraulic drilling machine 1 is disposed at the ore mining site 3, and drilling of the mining site 3 is performed by the drilling machine 1. The ore mined by the drilling machine 1 at the mining site 3 is unloaded from the mining site 3 by the dump truck 2. Unwanted soil is discarded to the disposal site 4, and useful ore is transported to the beneficiary yard 5 and beneficiated. Mineral processing is an operation to classify mineral production into useful mineral and unnecessary mineral, and the equipment necessary for mineral processing, such as a crusher etc., is installed in the mineral processing yard 5.

A plurality of dump trucks 2 are allocated to one excavating machine 1 to configure a unit unit. In the example of FIG. 1, four dump trucks 2 are assigned to one drilling machine 1. An example of the configuration of the dump truck 2 is shown in FIG. As shown in the figure, the dump truck 2 has a vehicle body frame 11, a cab 12, a vessel 13, a dump cylinder 14 and a suspension cylinder 15. The vehicle body frame 11 constitutes a basic framework of the dump truck 2 and is equipped with a cab 12 and a vessel 13. The vessel 13 is loaded with the excavated material by the excavating machine 1.

The dump truck 2 is disposed at the mining site 3, and the excavated material by the excavating machine 1 is mounted on the vessel 13. The dump truck 2 loaded with the excavated material travels to the beneficiary yard 5 (wasteland 4 if the excavated material is unnecessary soil) through a predetermined route, and inclines the vessel 13 rearward. Discharge the load. This is a so-called dump operation. Thereafter, the vessel 13 is returned to the horizontal state, and the dump truck 2 is run to return to the mining site 3. By repeatedly performing the above operation, useful minerals are taken out of the mining site 3 and sent to the beneficiary yard 5.

The dumping operation described above is performed by driving the dumping cylinder 14. Further, in the dump truck 2, four suspension cylinders 15 are interposed between the vehicle body frame 11 and the axles in the front and rear direction and in the right and left direction. The dump truck 2 is equipped with a wireless communication device for performing wireless communication.

FIG. 3 shows an example of the configuration of the dump truck 2 and the management center 6. At the mining site, a large number of dump trucks 2 are in operation, and a unique machine identification number (identifier) for identifying each dump truck 2 is attached. The dump truck 2 shown in FIG. 3 has a machine identification number "A". Hereinafter, the dump truck 2 of the machine identification number "A" is referred to as a dump truck 2A. Of course, the machine identification number is also assigned to the drilling machine 1.

As shown in the figure, the dump truck 2A includes a plurality of sensors 20 (

sensors

20a, 20b, 20c, ...), a sensor data processing unit 21, an abnormality determination unit 22, an alarm unit 23, and a wireless transmission unit 24. And are configured. Further, the management center 6 is configured to have a wireless reception unit 31, a display control unit 32, and a display 33.

The sensor 20 is a sensor provided on the dump truck 2A, and measures a target portion to obtain a numerical value. For example, a temperature sensor for measuring the temperature of the traveling motor or the outside air temperature, a load sensor for measuring the engine load, an ammeter for measuring the motor current, a speed sensor for measuring the traveling speed, a rotation number sensor for measuring the number of rotations of the engine, A load sensor, a pressure sensor, a flow velocity sensor, a voltmeter, or the like that detects the weight of a load or the like can be used as the sensor 20.

Each sensor 20 is connected to the sensor data processing unit 21. The sensor data processing unit 21 acquires numerical values (such as temperature and current value) measured by the sensors 20 as numerical information. The time when the numerical value information is measured is indivisiblely linked to the numerical value information as the time information. The sensor data processing unit 21 receives numerical information from each of the sensors 20, and recognizes from which sensor 20 numerical information is input (sensor identification information). The sensor data processing unit 21 associates numerical information with sensor identification information.

The numerical information acquired by the sensor data processing unit 21 is output to the abnormality determination unit 22. When the acquired numerical information is an abnormal numerical value, the abnormality determination unit 22 outputs that effect to the alarm unit 23. The alarm unit 23 causes the operator to acknowledge an abnormality by generating an alarm. The alarm unit 23 may employ any means, and for example, a monitor (not shown) provided on the dump truck 2 may display a message to that effect.

The wireless transmission unit 24 transmits information to the management center 6 by wireless communication. Here, at least machine identification information, sensor identification information, numerical information, and time information are wirelessly communicated. Of course, information other than these may be wirelessly transmitted. Various information communicated by wireless communication is received by the wireless reception unit 31 of the management center 6. Then, the received various information is output to the display control unit 32. The management center 6 is provided with a display 33 as a display device, and the display control unit 32 is a GUI (Graphical User Interface) that generates a screen to be displayed on the display 33 and enables operation of the generated screen.

Next, the details of the display control unit 32 will be described with reference to FIG. The display control unit 32 includes a graph creation unit 41, a sign determination unit 42, a degree of association information storage unit 43, an icon generation unit 44, and a screen creation unit 45. The display control unit 32 can be realized as software that can be executed by a computer.

As described above, the wireless reception unit 31 receives the machine identification information, the sensor identification information, the numerical information, and the time information from the dump truck 2. The graph creation unit 41 inputs numerical information and time information of the sensor 20 specified by the machine identification information and the sensor specification information, and acquires the numerical value measured by the sensor 20 at each time. Then, by plotting numerical values along the time axis, a graph G based on the numerical values measured by the sensor 20 is created. The graph G created over time is output to the screen creation unit 45.

Here, among the plurality of sensors 20, the sensor 20a is an analysis target. A graph G1 is created based on the measurement value of the sensor 20a. On the other hand, the sensor 20a includes one or more other sensors 20 that affect the measurement value of the sensor 20a. Here, it is assumed that the other sensors 20 are 20b, 20c, and 20d. That is, the sensor 20a is associated with the

other sensors

20b, 20c, 20d. Then, graphs G2 (sensor 20b), G3 (sensor 20c) and G4 (sensor 20d) are created based on the measurement values of the

sensors

20b, 20c and 20d. Information of the other related sensors 20 refers to the association degree information storage unit 43 to specify the

sensors

20 b, 20 c, and 20 d.

The sign determination unit 42 determines a sign indicating whether there is a possibility that an abnormality such as a defect or a failure may occur in the future in the sensor 20 to be analyzed. As described above, the sensor 20a to be analyzed has one or more associated

sensors

20b, 20c, 20d, and although the measurement value of the sensor 20a to be analyzed is appropriate, it is related to the sensor 20a If the measured values of the

other sensors

20b, 20c, 20d are abnormal, the measured values of the sensor 20a to be analyzed may be abnormal in the future. The sign determination unit 42 determines that an abnormality is to occur in the future in the region measured by the sensor 20a to be analyzed, based on the association degree information storage unit 43 and the numerical information of the

other sensors

20b, 20c, 20d. If so, determine the sign of abnormality.

The association degree information storage unit 43 stores, for each of the plurality of sensors 20, the degree of association with other sensors 20. The degree of association indicates the degree to which one or more other sensors 20 affect one sensor 20 (weight). For example, as association degree information related to the sensor 20a, the other sensors 20 related to the sensor 20a are the

sensors

20b, 20c and 20d, the sensor 20b is 0.1, the sensor 20c is 0.2, and the sensor 20d is 0 .5 information is stored as related information.

The graph creation unit 41 recognizes from the association degree information storage unit 43 that the other sensors 20 related to the sensor 20a are the

sensors

20b, 20c and 20d, and creates not only the graph G1 but also the graphs G2, G3 and G4. Do. The sign determination unit 42 determines a sign based on the value of the numerical information of the sensor 20a and the degree of association of the

sensors

20b, 20c, and 20d stored in the degree of association information storage unit 43.

The icon generation unit 44 generates an icon when the sign determination unit 42 determines a sign. Let this be a sign icon P. Although the precursor icon P can adopt any shape, here, the precursor icon P adopts an exclamation mark drawn in a downward triangle.

The screen creation unit 45 creates various screens displayed on the display 33. The screen creation unit 45 inputs a plurality of graphs G created by the graph creation unit 41 and performs screen display. Further, the sign icon P is input from the icon generation unit 44. The sign icon P is associated with time information and input to the screen creation unit 45. Then, the screen display of the sign icon P is performed.

The screen created by the screen creation unit 45 is displayed on the display 33 and becomes a GUI screen that can be operated by the operation unit 46. The operation unit 46 can use any means capable of screen operation, and is here a mouse. Of course, a keyboard or the like can also be used as the operation unit 46.

Although the screen generation unit 45 generates various screens, two screens will be described here. One is a machine list screen 50 shown in FIG. 5, and the other is a machine status screen 60 shown in FIG. First, the machine list screen 50 will be described. The machine list screen 50 shows a list of mining machines managed by the management center 6, that is, mining machines operating at the mining site.

As shown in FIG. 5, the machine list screen 50 is in the form of a table, and is composed of four items "Model", "Status", "Alarm (Error code)" and "View data". "Model" indicates machine identification information. "Status" indicates whether or not the mining machine specified by "Model" is in operation, and if it is in operation, "Service" is displayed. "Alarm (Error code)" displays a brief summary of the mining machine identified by "Model" when an alarm occurs. An alarm (prediction alarm) also occurs when the prognostic judgment unit 42 judges a precaution.

Therefore, the predictive alarm is also displayed on the machine list screen 50. In the example of FIG. 5, simple information is displayed together with the sign icon P. In addition, in the example of FIG. 5, a plurality of other types of icons are displayed. "View data" has a detail display button 51 for displaying detailed information on an alarm that has occurred.

A large number of mining machines are operated at a mining site, and one screen may not be able to display information on all the mining machines. Scroll bars 52 are displayed for this purpose. By placing the mouse pointer 53 and performing a drag operation on the scroll bar 52, it is possible to display information on mining machines not displayed on the machine list screen 50. Further, when the detail display button 51 is clicked by the mouse pointer 53, transition to the machine state screen 60 is made.

Next, the machine status screen 60 will be described. FIG. 6 shows an example of the machine status screen 60. As shown in the figure, the machine state screen 60 has a time axis display area 61, an icon display area 62, and a graph display area 63. Further, information “Model: A” for identifying a mining machine based on the machine identification information is displayed at the top of the screen. The machine status screen 60 is also capable of displaying other information.

The time axis display area 61 displays a time axis. In the example of the figure, each time from "15:10" to "15:50" is displayed on a time-axis. Display

time change buttons

61B and 61F are respectively provided at both ends of the time axis display area 61, and when the mouse pointer 53 is placed on the display time change button 61B and clicked, the time before the displayed time is the same. In the example of the figure, the time before "15:10" can be displayed. Further, when the display time change button 41F is clicked, it is possible to display a time after the displayed time, that is, a time after “15:50” in the example of FIG. By changing the time to be displayed, the icon displayed in the icon display area 62 and the graph G displayed in the graph display area 63 also change to the corresponding time.

An icon display area 62 is provided immediately below the time axis of the time axis display area 61, and a sign icon P is displayed corresponding to the time indicated by the time axis. As described above, the sign icon P is associated with time information. Therefore, the sign icon P is displayed immediately below the corresponding time of the time axis of the time axis display area 61.

The graph display area 63 is located immediately below the icon display area 62, and displays the graph G to be analyzed and one or more other graphs G related to the graph G. Here, the graph G1 to be analyzed and the graphs G2 and G3 among the three graphs G2, G3 and G4 related to the graph G1 are displayed. The graph G4 can also be displayed using a scroll bar 65 described later.

In the graph display area 63, graph specifying information 64A to 64D for specifying which sensor of the dump truck 2A the graph G (G1 to G4) to be displayed is displayed. Here, the sensor 20a is a sensor that measures the traveling motor temperature, and the analysis target is the traveling motor temperature. In the graph identification information 64A, “Motor sensor” is displayed, which indicates that the graph of the analysis target being displayed is the sensor 20a of the traveling motor temperature.

The graph identification information 64B indicates that the sensor 20b associated with the sensor 20a is a motor current. In the figure, "Motor current" is displayed. The graph identification information 64C indicates that the sensor 20c associated with the sensor 20a is an engine load. In the figure, "Engine load" is displayed. Although not shown in the drawing, the graph identification information 64D displays information indicating that the sensor 20d associated with the sensor 20a is the outside air temperature.

A scroll bar 65 is provided to scroll the screen display. By moving the mouse pointer 53 to the scroll bar 65 and performing a drag operation, the graph G4 of the sensor 20d not displayed in FIG. 6, that is, the graph G4 of the outside air temperature can be displayed. In the example of FIG. 6, the three graphs G1 to G3 are displayed on one screen, and the graph G4 is displayed by scrolling the screen. However, four graphs G1 to G4 are displayed on one screen. You may do it.

In an area adjacent to the graph display area 63, a numerical value display area 66 for displaying numerical information is provided. The numerical value display area 66 displays the numerical values indicated by the graphs G1 to G4 at a predetermined time. In the example of FIG. 6, the traveling motor temperature, the motor current, and the engine load at 15:36 are displayed. Of course, by scrolling the screen, the outside temperature can be displayed. The time change bar 67 can be moved by dragging with the operation unit 46 (mouse), and can be moved to the time change bar 67 at a desired time. The numerical value display area 66 displays the numerical values of the graphs G1 to G4 at the time when the time change bar 67 is positioned.

A scale change bar 68 is provided at a position adjacent to the time axis display area 61 and the icon display area 62. The scale change bar 68 can change the scale of the time displayed in the time axis display area 61. In the case of FIG. 6, the graphs G1 to G4 are displayed on the scale of 50 minutes, but when displaying on different scales, the scale is adjusted by the scale change bar 68.

Next, an operation using the above configuration will be described. As described above, it is assumed that the sensor 20a measures the traveling motor temperature of the dump truck 2A, the sensor 20b measures the motor current, the sensor 20c measures the engine load, and the sensor 20d measures the outside air temperature. . Of course, various sensors 20 other than these are measuring the part which becomes object of dump truck 2A.

The sensor data processing unit 21 processes the numerical values measured by the sensors 20. The numerical value information processed by the sensor data processing unit 21 is determined by the abnormality determination unit 22 whether or not an abnormality has occurred. If it is determined that an abnormality has occurred, the alarm unit 23 generates an alarm. The alarm unit 23 does not generate an alarm unless it determines the abnormality.

The sensor data processing unit 21 associates the numerical information, the sensor identification information, and the time information with the value measured by each sensor 20 as numerical information, and outputs the value to the wireless transmission unit 24. The wireless transmission unit 24 wirelessly transmits numerical information, time information, sensor identification information, and machine identification information to the management center 6 in a predetermined cycle. Each piece of information wirelessly transmitted is received by the wireless reception unit 31 and input to the display control unit 32.

The graph creation unit 41 of the display control unit 32 creates a graph G based on time information and numerical information. Here, since the analysis target is the sensor 20a that measures the motor temperature, a graph G1 is created based on the numerical information of the sensor 20a. At the same time, the graph creating unit 41 refers to the association degree information storage unit 43 and recognizes that the sensor 20 associated with the sensor 20a is the

sensors

20b, 20c and 20d. Therefore, the graph creation unit 41 creates the graphs G2, G3 and G4 together with the graph G1. Since each of the graphs G1 to G4 is created based on information periodically received wirelessly from the dump truck 2A, the graphs G1 to G4 created over time are input to the screen creation unit 45 and displayed on the display 33 Be done.

Even if the numerical value information of the graph G1 of the sensor 20a is in the appropriate range, the sign determination unit 42 determines a defect or failure in the future based on the

sensors

20b, 20c, 20d related to the sensor 20a to be analyzed. If it is predicted that there is a possibility of occurrence, a sign of abnormality is determined. To this end, the sign determination unit 42 acquires numerical information of the

sensors

20 b, 20 c, and 20 d from the wireless reception unit 31 and refers to the association degree information in the association degree information storage unit 43. For example, when the current value of the motor current is excessively high or the engine load is excessively large, even if the measured value of the sensor 20a at a certain time is normal, it may become an abnormal value in the future. is there. This is judged as a sign.

For example, the weight of the numerical information stored in the association degree information storage unit 43 is 0.5 for the sensor 20b for measuring the motor current, 0.2 for the sensor 20c for measuring the engine load, and 20d for the outside air temperature. Is 0.1, the sign determination unit determines the sign in consideration of these values. For example, even if the degree of abnormality of the numerical information of the sensor 20d becomes high, since the weight is low, it is not likely to be judged as a sign of abnormality. On the other hand, when the degree of abnormality of the numerical information of the motor current becomes high, since the weight is high, it tends to be judged as a sign of abnormality.

A threshold is set in advance in the sign determination unit 42, and whether the numerical value obtained by multiplying the above-mentioned weight by the abnormality degree of the measured value of the

sensors

20b, 20c, 20d exceeds the above-mentioned threshold or not Predictive signs can be determined. If it is exceeded, it is judged to be a sign, and if it is not exceeded, it is not judged to be a sign. Of course, the sign determination unit 42 may use any other method to determine a sign.

When the sign determination unit 42 determines a sign, that effect is output to the icon generation unit 44. The icon generation unit 44 generates the indication icon P and outputs the indication icon P and time information to the screen generation unit 45. Then, the screen creation unit 45 displays the sign icon P in the icon display area 62 corresponding to the time indicated by the time axis of the time axis display area 61 based on the time information. In the example of FIG. 6, the sign icon P is displayed at 15:34.

In addition, the graph G1 of the sensor 20a and the graphs G2, G3, and G4 of the

sensors

20b, 20c, and 20d related to the sensor 20a are input from the graph creating unit 41, and the time indicated by the time axis of the time axis display area 61 is shown. Is displayed in the graph display area 63 corresponding to. As described above, in the example of FIG. 6, the graphs G1 to G3 are displayed on one screen, and the graph G4 can be displayed by operating the scroll bar 65.

As shown in FIG. 6, the graph G1 of the sensor 20a to be analyzed is not changed significantly, and the numerical value indicated by the graph G1 is within the appropriate range. Therefore, the maintenance personnel or the like can not determine whether the sensor 20a generates an abnormality such as a failure or a failure in the future only by the graph G1 displayed on the display 33.

Therefore, the graph creation unit 41 creates graphs G2, G3, and G4 of the

sensors

20b, 20c, and 20d related to the sensor 20a. Then, the screen creation unit 45 creates a screen on which the graphs G2, G3, and G4 are displayed on the same time axis as the graph G1. Then, display is performed on the display 33 (note that the graph G4 is displayed by operating the scroll bar 65).

As shown in the figure, the graph G2 based on the numerical information of the sensor 20b, that is, the graph G2 showing the current value of the motor current has an excessively low current value, and changes rapidly to a high current value. Accordingly, it is recognized that the current value of the motor current is not within the proper range, but is an abnormal numerical value and a rapid change rate. If the current value of the motor current becomes abnormal, it is likely that the traveling motor temperature will also become abnormal in the future. The graph G3 indicating the engine load and the graph G4 indicating the outside air temperature although not shown are assumed to be within an appropriate range.

Therefore, the graph creating unit 41 creates not only the graph G1 to be analyzed but also the graphs G2, G3 and G4, and the screen creating unit 45 displays the respective graphs G1 to G4 corresponding to the same time axis. ing. As a result, even if the graph G1 to be analyzed indicates the appropriate range, it is recognized that the graph G2 of the related sensor 20b is an abnormal value, so the graph G1 is appropriate at the present time Even if it is, it can be recognized that the traveling motor temperature measured by the sensor 20a may become abnormal in the future. Thereby, detailed analysis of sensor 20a can be performed.

As described above, by displaying the graphs G2, G3, and G4 of the

sensors

20b, 20c, and 20d related to the sensor 20a, it is possible to recognize that the sensor 20b related to the sensor 20a is abnormal. By displaying the sign icon P, the sign of abnormality can be visually recognized by maintenance personnel or the like.

As described above, when an abnormality occurs in the sensor 20b having a high degree of association weight, there is a high possibility that an abnormality will occur in the measurement value of the sensor 20a (that is, the traveling motor temperature) in the future. Even if an abnormality occurs in the sensor 20d having a low weight, it is unlikely that the measurement value of the sensor 20a will become abnormal in the future. Although it is possible to judge this from the graphs G1 to G4, by displaying the sign icon P, the maintenance personnel etc. can recognize the sign easily at first glance.

In addition, although the measured values of the

sensors

20b, 20c and 20d are respectively within the appropriate range, if they are close to the upper limit value or the lower limit value of the appropriate range, it is possible to cause an abnormality in the sensor 20a in the future It may be highly sexual. In this case, since the graphs G2 to G4 are within the appropriate range, it is difficult for maintenance personnel etc. to judge the sign of abnormality of the sensor 20a only from the graphs G2 to G4. However, even in such a case, the sign determination unit 42 determines the sign on the basis of the numerical information and the association degree information in the association degree information storage unit 43, and the sign icon P is displayed. Can easily recognize the sign of abnormality of the sensor 20a.

By the way, when the predictive icon P is generated, the screen creating unit 45 draws the gradation 69 in a predetermined time range before and after that. As shown in FIG. 6, the gradation 69 is displayed as a background from the icon display area 62 to the lower part of the screen. The gradation 69 changes gradation gradually.

The sign indicates that the traveling motor temperature may become abnormal in the future, but there are also stages. As described above, the numerical value obtained by multiplying the degree of association information of the

sensors

20b, 20c, and 20d and the degree of abnormality can level the possibility of becoming an abnormality in stages. Let this be a sign level. The screen creation unit 45 changes the gradation of the gradation 69 in accordance with the sign level. When the sign level is low, the color is light, and when it is high, the color is dark.

As a result, the maintenance personnel etc. visually recognize the machine state screen 60 displayed on the display 33, and if the predictive alarm is generated, the traveling motor temperature becomes abnormal in the future with what possibility. It can be recognized.

The time range for displaying the gradation 69 can be set arbitrarily. That is, it is possible to set a predetermined fixed time range before and after the occurrence time of the sign icon P as a reference. Also, the time range to be displayed can be made variable. The gradation 69 may be displayed from the time when the predictive level is the lowest to the time when it is the highest. In FIG. 6, the gradation 69 is not displayed after a predetermined time after the precursor icon P is displayed, but the gradation 69 may be displayed until the precursor determination unit 42 no longer determines the precursor.

Further, in FIG. 6, although the gradation of gradation 69 is changed according to the sign level, it is sufficient that the color tone including not only the gradation of color but also light and dark, intensity and the like is changed. Also, not the color tone but the color itself may be changed. For example, the gradation 65 may be changed stepwise from blue to green and then to red. Further, it may be displayed that the predictive level is changing by three-dimensional display or the like. In the case where the sign level is not determined or the like, monochrome display may be performed without changing the shade or shade of the time range in which the gradation 69 is displayed.

Further, as shown in FIG. 6, the machine state screen 60 is provided with a numerical value display area 66, and the time change bar 67 can be changed by the mouse pointer 53 before and after the time axis. Thus, the numerical value indicated by the graph G at an arbitrary time can be specifically displayed in the numerical value display area 66. The maintenance personnel or the like can recognize the traveling motor temperature in more detail by moving the time change bar 67 to a desired time point.

Further, in the example of FIG. 6, the graphs G1, G2, G3, and G4 are displayed in the order corresponding to the same time axis, but the screen generation unit 45 can control the display order. The graph G1 to be analyzed may be displayed in the top row, and may be displayed in order from the next row in which the rate of change in numerical information is large. Thereby, the graph G of the sensor 20 in which the abnormality has occurred can be displayed with priority, which can contribute to detailed analysis of maintenance personnel and the like.

In addition, the screen generation unit 45 may display the graph G1 of the sensor 20a to be analyzed at the top level, and may display the graph in the order of the largest weight of the degree of association from the next level. The greater the weight of the degree of association, the greater the influence on the sensor 20a to be analyzed. Therefore, by preferentially displaying the graph G2 of the sensor 20b having a large weight of the degree of association, it is possible to contribute to detailed analysis of maintenance personnel and the like.

Further, in the above-described example, three

sensors

20b, 20c, and 20d are associated with the sensor 20a to be analyzed. However, more sensors 20 may be associated. For example, in the case where exhaust gas temperatures of a plurality of systems are related, the plurality of graphs G may be superimposed and displayed on a region where one graph G is displayed. The exhaust gas temperature of each system is the same unit, and the appropriate range is also the same. In such a case, the graphs G of the respective systems can be superimposed and displayed on the area where one graph G is displayed.

Basically, one graph G is displayed in the area where one graph G is displayed. In the example of FIG. 6, three graphs G1, G2, and G3 are displayed in the area for displaying each of them, and when displaying the graph G4, the scroll bar 65 is operated to be displayed. Of course, when displaying the graph G of exhaust gas temperatures of a plurality of systems individually, it may be displayed by operating the scroll bar 65, but the graph G of the exhaust gas temperatures of each system is overlapped Many graphs G can be displayed on one screen by displaying them separately.

In the present embodiment, the screen generation unit 45 performs control so as to display the graph G1 of the sensor 20a to be analyzed and the graphs G2, G3, and G4 of the

other sensors

20b, 20c, and 20d related to the sensor 20a. However, only the graph G1 may be displayed on the screen. In this case, the graphs G2, G3, and G4 are not displayed, but when the sign determination unit 42 determines a sign, the icon generation unit 44 generates the sign icon P, whereby the sign icon P is displayed on the screen. Is displayed. Thereby, even if the graph G1 is appropriate, the maintenance personnel etc. can recognize that there is a possibility that an abnormality may occur in the future based on the sign icon P.

Also, instead of the sign icon P, a gradation 69 may be displayed. Since the gradation 69 displays the sign in stages, maintenance personnel etc. recognize the sign without displaying the other graphs G2, G3 and G4 by displaying the gradation 69 on the background of the screen can do.

By the way, as mentioned above, the management center 6 manages a large number of mining machines operating at a mining site. Therefore, listing the status of each mining machine is useful for managing the mining machine. As shown in FIG. 5, the machine list screen 50 displays machine identification information of each mining machine, whether or not it is in operation, and a brief description of an alarm generated for each mining machine. By visually recognizing the machine list screen 50, maintenance personnel and the like can comprehensively manage simple situations of a plurality of mining machines.

Alarms displayed on the machine list screen 50 include a machine alarm that is actually abnormal and a sign alarm that indicates the sign described above. The machine alarm indicates that the measurement value of the sensor 20 is abnormal. As shown in the figure, there are two types of machine alarms, one indicating "Failure", which is a high-risk alarm. The other is "Warning", which indicates a low risk alarm.

And, the predictive alarm is shown as "predeictive alaram", which indicates that the predictive level is level 3. The precursor alarm occurs when the precursor determination unit 42 determines a precursor, and is displayed on the machine list screen 50. The maintenance personnel can make a transition to the machine state screen 60 shown in FIG. 6 by clicking the detail display button 51 in accordance with the mouse pointer 53. As a result, the sensor 20a to be analyzed is identified, and the detailed state of the sensor 20a can be analyzed on the machine state screen 60. Note that any method can be used to specify the sensor 20 to be analyzed.

DESCRIPTION OF SYMBOLS 1 Drilling machine 2 Dump truck 20 Sensor 21 Sensor data processing unit 24 Wireless transmission unit 31 Wireless reception unit 32 Display control unit 33 Display 41 Graph creation unit 42 Predictive decision unit 43 Relevance degree information storage unit 44 Icon creation unit 45 Screen creation unit 50 Machine list screen 60 Machine status screen 61 Time axis display area 62 Icon display area 63 Graph display area 69 Gradation G Graph P Predictive icon

Claims

An operation management apparatus for a self-propelled mining machine that manages the mining machine based on information wirelessly communicated from a plurality of mining machines, comprising:
A wireless reception unit that wirelessly receives numerical information measured by a plurality of sensors provided in the mining machine;
When showing the time series graph showing the measurement value of any one of the sensors based on the numerical information and the measurement values of one or more other sensors that affect the measurement value of the one sensor A graph creation unit that creates a series of graphs,
A screen creation unit for creating a machine state screen on which the one graph and the other graph are displayed corresponding to the same time axis;
A display device for displaying the machine status screen;
Operation management device of a self-propelled mining machine equipped with
When the measured value of the one sensor is within the appropriate range, the measured value of the one sensor may become abnormal in the future based on the numerical information of the one sensor and the numerical information of the other sensor A sign determination unit that predicts the presence or absence of a sign as a sign;
An icon generation unit that generates an icon indicating the sign when the sign determination unit predicts the sign;
Equipped with
The operation management device for a self-propelled mining machine according to claim 1, wherein the screen creation unit displays the icon corresponding to the same time axis.
For each of the plurality of sensors, an association degree information storage unit that stores the association degree of the sensor associated with the sensor;
The prediction determination unit predicts the prediction based on numerical information of the other sensor associated with the one sensor and the association degree with reference to the association degree information storage unit. Operation management device of self-propelled mining machine.
The operation management device for a self-propelled mining machine according to claim 3, wherein the screen creation unit changes the background of the machine status screen in a predetermined time range before and after the precursor icon.
The screen creation unit changes the color or tone of the background of the machine status screen in stages according to the indication level when the indication alarm is divided into a plurality of indication levels. Operation management device for mobile mining machines.
The self-propelled mining machine according to claim 3, wherein the screen creation unit displays the other graph in order from the other graph having the largest change rate of the numerical information in correspondence with the same time axis. Operation management device.
The said screen preparation part displays the said other graph corresponding to the said same time axis in an order from the thing with the largest said correlation among the said other graphs. Management device.