WO2014045395A1

WO2014045395A1 - Operation management device of self-propelled mining equipment

Info

Publication number: WO2014045395A1
Application number: PCT/JP2012/074207
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
Also published as: JP5913602B2; JPWO2014045395A1

Abstract

The purpose of the present invention is to enable swift and accurate recognition 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); an alarm determination unit (42) which, on the basis of the numerical information, determines alarms of different types corresponding to a multi-stage warning level; an icon generation unit (44) which generates different types of icons corresponding to the alarm; a screen generation unit (45) which creates an equipment state screen (60) displaying the graph (G) and the icons adapted to the same time axis; and a display (33) which displays the equipment state screen (60).

Description

Operation management device for self-propelled mining equipment

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

For example, the main work in the mine is mining and beneficiation. Mining is to extract ore containing useful minerals from the mine, and beneficiation is to selectively extract useful minerals from the mined minerals. Mining is for drilling where mines exist in the mine, and beneficiation is not performed at the excavation site, but an independent beneficiation yard is installed. Various facilities necessary for beneficiation are installed in this beneficiation yard. In addition, because there are no useful minerals in the sediment covering the veins, a sediment disposal site will also be installed.

For excavation, an excavating machine such as a loader type or a backhoe type excavator is used, and an electric type or a hydraulic type is used as a power source. In consideration of work efficiency, a very large excavating machine is used. On the other hand, a dump truck as a transporting machine is used for transporting minerals from a mining site to a beneficiation yard and transporting unnecessary rocks to a disposal site. A plurality of dump trucks are used for one excavating machine. Depending on the distance to the mining site or the beneficiation yard, etc., it is normal for 3-5 dump trucks to carry a single excavator.

Mining work is usually performed 24 hours a day, 365 days a year, and mining machines such as excavating machines and dump trucks need to be operated efficiently so that they do not fail as much as possible. . For this reason, each mining machine is provided with sensors at various locations, and the operation state of each operating location is detected by various sensors. When it is detected by these sensors that there is an excessive load and it is detected that it is in a severe operating state, an alarm is issued to the operator because there is a risk of failure.

As described above, mining machines cannot perform maintenance work such as maintenance / inspection frequently due to excessive operation time. Moreover, even if maintenance work is performed, it is necessary to perform it efficiently in a short time. For this purpose, a management center is installed at a predetermined position in the mine. The mining machine includes a wireless communication device, and data measured by various sensors is wirelessly communicated to the management center. As a result, each mining machine operating at the mine site is managed.

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

JP 2011-38273 A

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

When the data wirelessly communicated from the mining machine, that is, when the numerical value measured by the sensor shows an abnormal value, an alarm is displayed on the display. The alarm display is determined by whether or not the measured value of the sensor is within the normal range, but if the range is set too tightly, the mining machine is not actually in a dangerous state and requires immediate maintenance. An alarm is displayed despite not. On the other hand, if the range is set too loosely, the mining machine is actually in a dangerous state and no alarm is displayed even though immediate maintenance is required. Even when the measured value of the sensor is within the range, a malfunction or failure may occur in the future due to multiple factors. In this case, since the measured value of the sensor is within the range, no alarm is displayed.

Therefore, it is difficult to accurately grasp the state of the mining machine with the alarm display. A graph based on the measured value of the sensor is displayed on the display of the management center, and this graph can be visually recognized by maintenance personnel and the state of the mining machine can be analyzed. However, depending on the graph alone, it is difficult to quickly and accurately analyze the state of the mining machine. In particular, as described above, when the measured value of the sensor is within a normal range, no abnormality is seen in the graph, so it is impossible to recognize that a malfunction or failure will occur in the future. Become.

Therefore, an object of the present invention is to make it possible to accurately and promptly recognize the state of each mining machine at a management 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 device for a self-propelled mining machine according to the present invention manages the operation of the self-propelled mining machine that manages the mining machine based on information wirelessly communicated from a plurality of mining machines. A wireless receiving unit for wirelessly receiving numerical information measured by a plurality of sensors provided in the mining machine, and a measured value of any one of the sensors based on the numerical information Based on the numerical information, a graph creation unit that creates a time-series graph, an alarm determination unit that determines different types of alarms corresponding to multiple levels of alert levels, and a different type of icons that correspond to the alarms are generated An icon generation unit that generates a machine state screen that displays the graph and the icon corresponding to the same time axis, and displays the machine state screen. And a, and a display device.

In addition, the alarm determination unit is configured such that when the numerical information is within an appropriate range, the numerical information of another sensor that measures one or a plurality of parts that affect the measured value of the one sensor and the one sensor When it is predicted that there is a possibility that an abnormality will occur in the one sensor in the future based on the numerical information of the above, it is determined as a warning alarm, and the icon generator generates a warning icon corresponding to the warning alarm You may make it do.

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

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

The icon generation unit generates an alarm icon indicating that the numerical information is out of a limit range, and the screen generation unit confirms the alarm icon after displaying the alarm icon. When an operation indicating that it has been performed is performed, it may be changed to a confirmed icon of a different type from the alarm icon.

In addition, the screen creation unit, for each of the plurality of sensors provided in the plurality of mining machines, from the machine list screen that displays a list of information on the alarm grouped for each mining machine, the machine status screen It may be possible to transition to

The present invention displays not only a time-series graph corresponding to the same time axis on the display device of the management center, but also icons corresponding to different types of alarms corresponding to a plurality of levels of warning levels. The state of the mining machine can be grasped accurately and quickly. In particular, even if the value of the displayed graph is within the appropriate range, considering the values of other sensors, displaying a predictive icon that is one of the alarms will help to prevent problems and failures in the future. It is possible to recognize in advance that there is a possibility of occurrence, and it is possible to grasp the state of the mining machine more accurately.

It is explanatory drawing which shows an example of the site | area which mine of the ore in a mine. It is a side view of the 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 which shows the structure 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 an excavating machine (hydraulic excavator) and a dump truck are applied as an example of a mining machine will be described, where a work site that uses a mining machine is a mining site. It can be.

Figure 1 shows an example of a mine work site. In the figure, an excavating machine 1 and a dump truck 2 are shown as mining machines. The electric or hydraulic excavating machine 1 is disposed in an ore mining site 3, and the mining site 3 is excavated by the excavating machine 1. The ore mined by the excavating machine 1 at the mining site 3 is carried out from the mining site 3 by the dump truck 2. Waste soil and sand are discarded at the disposal site 4, and useful ore is transported to the beneficiation yard 5 for beneficiation. The beneficiation is an operation for classifying the mined minerals into useful minerals and non-use minerals. In the beneficiation yard 5, facilities necessary for the beneficiation, such as crushers, are installed.

A unit is configured by assigning a plurality of dump trucks 2 to one excavating machine 1. In the example of FIG. 1, four dump trucks 2 are assigned to one excavating machine 1. FIG. 2 shows an example of the configuration of the dump truck 2. As shown in the figure, the dump truck 2 includes 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, which is equipped with a cab 12 and a vessel 13. The vessel 13 is loaded with excavated material from the excavating machine 1.

The dump truck 2 is placed in the mining site 3 and the excavated material from the excavating machine 1 is mounted on the vessel 13. The dump truck 2 loaded with the excavated material travels through a predetermined route to the beneficiation yard 5 (or the disposal site 4 when the excavated material is waste earth and sand) and tilts the vessel 13 backward. 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 driven to return to the mining site 3. By repeating the above operation, useful minerals are taken out from the mining site 3 and sent to the beneficiation yard 5.

The dump operation described above is performed by driving the dump cylinder 14. Further, in the dump truck 2, four suspension cylinders 15 are interposed between the vehicle body frame 11 and the axle on the front and rear sides and the left and right sides. 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. A large number of dump trucks 2 are operating at the mine site, 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 having the machine identification number “A” is referred to as a dump truck 2A. Of course, the machine identification number is also given to the excavating machine 1.

As shown in the figure, the dump truck 2A includes a plurality of sensors 20 (sensor 20a, sensor 20b, sensor 20c,...), A sensor data processing unit 21, an abnormality determination unit 22, an alarm unit 23, and a wireless transmission unit 24. It has and. The management center 6 includes a wireless reception unit 31, a display control unit 32, and a display 33.

The sensor 20 is a sensor provided in the dump truck 2A, and obtains a numerical value by measuring a target portion. For example, a temperature sensor that measures the temperature of the traveling motor and the outside air temperature, a load sensor that measures the engine load, an ammeter that measures the motor current, a speed sensor that measures the traveling speed, a rotational speed sensor that measures the rotational speed of the engine, A load sensor, a pressure sensor, a flow rate 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 a sensor data processing unit 21. The sensor data processing unit 21 acquires numerical values (temperature, current value, etc.) measured by each sensor 20 as numerical information. In this numerical information, the time when the numerical information is measured is inseparably linked as time information. The sensor data processing unit 21 receives numerical information from each sensor 20, and recognizes from which sensor 20 the numerical information is input (sensor specifying information). The sensor data processing unit 21 associates numerical information with the sensor specifying information.

The numerical information acquired by the sensor data processing unit 21 is output to the abnormality determination unit 22. If the acquired numerical information is an abnormal numerical value, the abnormality determining unit 22 outputs a message to that effect to the alarm unit 23. The alarm unit 23 notifies the operator of the abnormality by generating an alarm. Arbitrary means can be employ | adopted for the alarm part 23, for example, it may display on the monitor (not shown) with which the dump truck 2 is equipped.

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 transmitted wirelessly. Various types of information communicated wirelessly are 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 the generated screen to be operated.

Next, 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, an alarm determination unit 42, an association degree 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 executable by a computer.

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

The alarm determination unit 42 determines the alarm type of the sensor 20 specified by the machine identification information and the sensor specifying information. In the alarm determination unit 42, a plurality of different ranges are set in order to determine the degree of abnormality of the numerical information. Here, it is assumed that two are set, an appropriate range indicating that the value indicated by the numerical information is appropriate and a limit range indicating the limit. The lower limit value of the limit range is lower than the lower limit value of the appropriate range, and the upper limit value of the limit range is higher than the upper limit value of the appropriate range. When the value indicated by the numerical information is outside the appropriate range and within the limit range, it is determined as a low risk level for outputting a warning alarm, and when the value is outside the limit range, it is determined as a high level at which a warning alarm is output. Both the warning alarm and the warning alarm are alarms, but the alarms are different in stages. Note that the limit range can be set to be the same as a reference range when the abnormality determination unit 22 described with reference to FIG.

Also, the alarm determination unit 42 determines a predictive alarm. The sensor 20 (for example, 20a) specified by the sensor specifying information includes one or a plurality of other sensors (for example, 20b, 20c, and 20d) that measure a part that affects the measurement value of the sensor 20a. . That is, the sensor 20a and the

other sensors

20b, 20c, and 20d are related. At this time, the value of the numerical information measured by the sensor 20a is within an appropriate range, but when the value of the numerical information measured by the other

related sensors

20b, 20c, and 20d is taken into consideration, the sensor 20a will measure in the future. When the predicted value is predicted to be out of the limit range, it is determined as a predictive alarm.

The relevance information storage unit 43 stores the relevance of each of the plurality of sensors 20 with the other sensors 20. The degree of association indicates the degree (weight) at which one or a plurality of other sensors 20 affect one sensor 20. For example, as the relevance information related to the sensor 20a, information such as 0.1 for the sensor 20b, 0.2 for the sensor 20c, and 0.5 for the sensor 20d is stored as related information. The alarm determination unit 42 determines a predictive alarm based on the value of the numerical information of the sensor 20 a and the relevance degree stored in the relevance degree information storage unit 43.

Information on the type of alarm is input from the alarm determination unit 42 to the icon generation unit 44. Different types of icons are generated according to the types of alarms. Here, since information of three alarms, that is, a warning alarm, warning alarm, or predictive alarm, is input from the alarm determination unit 42, an icon corresponding to each alarm is generated. Warning alarm is a warning icon T with an exclamation mark drawn in an upward triangle, warning alarm is a gear-type warning icon R, and a warning alarm is a warning icon with an exclamation mark drawn in a downward triangle Generated as P.

The screen creation unit 45 creates various screens displayed on the display 33. The screen creation unit 45 inputs the graph G created by the graph creation unit 41 and displays the screen. Also, various icons (warning icon T, warning icon R, predictive icon P) are input from the icon generation unit 44. These icons are input to the screen creation unit 45 in association with the time information. Then, various icons are displayed on the screen.

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 operating the screen, and here is a mouse. Of course, a keyboard or the like can also be used as the operation unit 46.

The screen creation unit 45 creates various screens. Here, two screens will be described. 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 mine site.

As shown in FIG. 5, the machine list screen 50 has a table format, and includes four items of “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 “Service” is displayed when it is in operation. “Alarm (Error code)” displays a brief outline of an alarm that has occurred in the mining machine specified by “Model”. In this, various icons generated by the icon generation unit 44 are displayed. “View data” has a detailed display button 51 for displaying detailed information regarding an alarm that has occurred.

A large number of mining machines are in operation at the mine site, and information on all mining machines may not be displayed on one screen. For this purpose, a scroll bar 52 is displayed. By moving the mouse pointer 53 and dragging the scroll bar 52, it is possible to display information on the mining machine that is not displayed on the machine list screen 50. Further, by clicking the detail display button 51 with the mouse pointer 53, the machine state screen 50 is changed.

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. In addition, information “Model: A” for specifying the mining machine based on the machine identification information is displayed at the top of the screen. The machine status screen 60 can also display other information.

The time axis display area 61 displays the time axis. In the example of the figure, each time from “15:10” to “15:50” is displayed on the time axis. Display time change buttons 61B and 61F are provided at both ends of the time axis display area 61. When the mouse pointer 53 is clicked 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, a time after the displayed time, that is, a time after “15:50” in the example in the figure can be displayed. Note that 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 icons are displayed corresponding to the time indicated by the time axis. As described above, the three types of icons, warning icon T, warning icon R, and predictor icon P, are associated with time information. Accordingly, various icons are displayed immediately below the corresponding time on the time axis in the time axis display area 61.

The graph display area 63 is directly below the icon display area 62 and displays the graph G. The horizontal axis of the graph G coincides with the time axis of the time axis display area 61, and shows the numerical value at that time. The graph display area 63 shows the upper limit (H1) and lower limit (L1) of the appropriate temperature range (two-dot chain line in the figure), and the upper limit (H2) and lower limit (L2) of the limit temperature range. It is shown (in the figure, a dashed line). Further, in the upper part of the graph display area 63, graph specifying information 64 for specifying which sensor of the dump truck 2A is the displayed graph G is shown. Here, it is assumed that the temperature is the temperature of the traveling motor of the dump truck 2A, and is displayed as “Motor temp” for specifying the temperature.

A numerical display area 66 for displaying numerical information is provided in an area adjacent to the graph display area 63. The numerical value display area 66 displays numerical values indicated by the graph G at a predetermined time. In this case, the traveling motor temperature at a predetermined time is displayed. A display time change bar 67 is provided in the time axis display area 61. The display time change bar 67 can be moved by dragging with the operation unit 46 (mouse), and can be moved to the display time change bar 67 at a desired time. The numerical value display area 66 displays the numerical value of the graph at the time when the display time change bar 67 is located.

A scale change bar 68 is provided at a location adjacent to the time axis display area 61 and the icon display area 62. The scale change bar 68 can change the time scale displayed in the time axis display area 61. In the case of FIG. 6, the graph G for 50 minutes is displayed, but when the graph G other than 50 minutes is displayed, the scale is adjusted by the scale change bar 68.

A confirmation button 69 (“Confirm” in the figure) is displayed at the top of the time axis display area 61. The confirmation button 69 is a button for causing the screen creation unit 45 to recognize that the alarm icon R has been confirmed when the alarm icon R is generated. When maintenance personnel or the like confirm the alarm icon R, the screen creation unit 45 recognizes that the alarm icon R has been confirmed by clicking the mouse pointer 53 with the confirmation button 69 and clicking.

Next, the operation using the above configuration will be described. Here, the traveling motor temperature of the dump truck 2A is measured by the sensor 20a, and information on the traveling motor temperature measured by the sensor 20a is displayed on the machine state screen 60. It is assumed that the sensor 20b measures the outside air temperature of the dump truck 2A, the sensor 20c measures the engine load, and the sensor 20d (not shown) measures the current value of the motor current. In addition to these, various sensors 20 measure a target region.

The sensor data processing unit 21 performs data processing for associating sensor specific information with numerical information input from each sensor 20. In addition, numerical information is output from the sensor data processing unit 21 to the abnormality determination unit 22, and the abnormality determination unit 22 determines whether an abnormality has occurred. If it is determined that an abnormality has occurred, the alarm unit 23 generates an alarm. Unless the abnormality is determined, the alarm unit 23 does not generate an alarm.

The sensor data processing unit 21 outputs sensor identification information, numerical information associated with the sensor identification information, and time information associated with the numerical information 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 at a predetermined cycle. Each piece of wirelessly transmitted information is received by the wireless receiver 31 and input to the display controller 32.

The graph creation unit 41 of the display control unit 32 creates a graph G based on the time information and the numerical information. This graph G shows the numerical values measured by the sensor 20 specified by the sensor specifying information in time series. Here, a graph G of the traveling motor temperature measured by the sensor 20a is created. Since the graph G is created based on information periodically wirelessly received from the dump truck 2A, the graph G created with time is input to the screen creation unit 45 and displayed on the display 33.

The alarm determination unit 42 recognizes that the target for determining the alarm type is the traveling motor temperature of the dump truck 2A based on the machine identification information and the sensor identification information. Then, the type of alarm is determined based on the numerical information. If the numerical information of the sensor 20a is within an appropriate range except for the predictive alarm described above, it is determined that it is not necessary to generate an alarm. If the numerical information is out of the proper range and within the limit range, it is determined that the warning alarm indicates that the degree of risk is low. If the numerical information is outside the limit range, it is determined that the alarm alarm indicates that the degree of danger is high.

On the other hand, even if the numerical information is within an appropriate range, if it is predicted that an abnormality will occur in the future by comprehensively considering the numerical information of the other sensors 20 related to the travel motor temperature, an alarm determination The unit 42 determines that it is a predictive alarm. The travel motor temperature is affected by outside air temperature, engine load, motor current, and the like. If these values are not appropriate, the travel motor temperature may become abnormal in the future.

For example, when the sensor 20c for measuring the engine load detects an excessive engine load, the traveling motor temperature may exceed the limit range in the future. Even when the current value of the motor current is excessively high, the traveling motor temperature may exceed the limit range in the future.

Therefore, the alarm determination unit 42 may cause an abnormality in the future even if the numerical information of the sensor 20a is within an appropriate range based on the numerical information of the

sensors

20b, 20c, and 20d and the numerical information of the sensor 20a. If it is determined that there is an alarm, it is determined as a predictive alarm. At this time, the alarm determination unit 42 refers to the relevance level information stored in the relevance level information storage unit 43. As described above, the numerical information weight of the sensor 20b that measures the outside air temperature is 0.1, the numerical information weight of the sensor 20c that measures the engine load is 0.2, and the numerical information of the sensor 20d that measures the motor current When the weight is 0.5, the alarm determination unit 42 determines the predictive alarm in consideration of these weights.

For example, even if the degree of abnormality of the numerical information of the sensor 20b is high, the weight is low, so that it does not tend to be determined as a precursor alarm. On the other hand, when the degree of abnormality of the numerical information of the motor current is high, the weight is high, so that it tends to be determined as a predictive alarm. The predictive alarm calculates the numerical value by multiplying the weights of the

sensors

20b, 20c, and 20d and the degree of abnormality, and the alarm determination unit 42 determines the predictive alarm when the calculated numerical value exceeds a preset threshold value. be able to. Of course, the alarm determination unit 42 may determine the predictive alarm by other methods.

The alarm type determined by the alarm determination unit 42 is associated with time information. Then, alarm type information and time information are input to the icon generation unit 44. The icon generator 44 generates a warning icon T for a warning alarm, a warning icon R for a warning alarm, and a warning icon P for a warning alarm. Each icon is generated as a different type (display mode).

Each icon is associated with time information. Therefore, the screen creation unit 45 displays each icon in the icon display area 62 corresponding to the time indicated by the time axis in the time axis display area 61. In the example of FIG. 6, the predictor icon P is displayed first, and then the warning icon T is displayed. Next to the warning icon T, a confirmed icon C is displayed. The confirmed icon C is originally an alarm icon R, but indicates that the icon has already been confirmed when the confirmation button 69 is clicked.

That is, the screen creation unit 45 confirms the alarm icon R when an operation (operation to click the confirmation button 69) indicating that the alarm icon R is confirmed in the state where the alarm icon R is displayed. Change to completed icon C. And in order to distinguish the unconfirmed alarm icon R and the confirmed icon C, the kind (display mode) of the icon is varied. Next to the confirmed icon C, an unconfirmed alarm icon R is displayed.

The graph G is displayed corresponding to the time axis in the time axis display area 61. Therefore, various icons are displayed in the icon display area 62 corresponding to the same time axis, and the graph G is displayed in the graph display area 63. The icons displayed in the icon display area 62 basically have different types according to a plurality of alert levels. Here, a warning icon T is displayed when the numerical information is outside the proper range and within the limit range, and a warning icon R is displayed when the numerical information is outside the limit range.

Therefore, when the warning icon T is displayed, it can be recognized based on the icon that the traveling motor temperature of the dump truck 2A is not an appropriate temperature. In this case, the travel motor temperature may return to an appropriate temperature when the operator of the dump truck 2A takes any measures without requiring maintenance. Therefore, it may be possible to avoid unnecessary occurrence of downtime (unused time) of the dump truck 2A.

On the other hand, when the alarm icon R is displayed, it can be recognized that the traveling motor temperature of the dump truck 2A is in a dangerous state. In this case, it can be recognized that maintenance of the dump truck 2A needs to be performed. In this way, the numerical information of the sensor 20 is determined step by step to give different warning levels, and different types of icons are displayed according to the stepwise warning level. Maintenance personnel or the like can grasp the state of the traveling motor temperature of the dump truck 2A quickly and reliably by visually recognizing the icon not only from the graph G.

Also, although the travel motor temperature is within the appropriate range, the travel motor temperature may be out of the danger range in the future based on other factors related to the travel motor temperature. As described above, values such as the outside air temperature, the engine load, and the motor current are factors that influence the traveling motor temperature. Therefore, considering these values comprehensively, the alarm determination unit 42 determines a predictive alarm.

Even if it is determined as a predictive alarm, the traveling motor temperature itself is within the appropriate range, and therefore cannot be determined only by the graph G. By displaying this as the predictor icon P, maintenance personnel or the like can recognize that there is a possibility that the travel motor temperature may become abnormal in the future. Thereby, the state of the traveling motor temperature of the dump truck 2A can be recognized more accurately.

Incidentally, when the sign icon P is generated, the screen creation unit 45 draws the gradation 65 in a predetermined time range before and after the sign icon P. As shown in FIG. 6, the gradation 65 is displayed as a background from the icon display area 62 to the lower part of the screen. The gradation 65 changes in shades.

The predictive alarm indicates that the travel motor temperature may become abnormal in the future, but there is a stage in that possibility. As described above, the possibility of an abnormality can be classified in stages according to the numerical value obtained by multiplying the relevance information of the

sensors

20b, 20c, and 20d by the abnormality degree. This is the predictive level. The screen creation unit 45 changes the gradation of the gradation 65 according to 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, maintenance personnel, etc. visually observe the machine state screen 60 displayed on the display 33, and when the predictive alarm is generated, the possibility that the traveling motor temperature will be in the limit range in the future. You can recognize whether it will be outside.

The time range for displaying the gradation 65 can be set arbitrarily. That is, a predetermined fixed time range before and after the time when the predictor icon P is generated can be set. In addition, the time range to be displayed can be made variable. The gradation 65 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 of the gradation 65 is changed according to the sign level. However, any color may be used as long as it changes not only the color density but also the color tone including brightness and darkness. Further, 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 red. Further, it may be displayed that the sign level is changed by three-dimensional display or the like. When the sign level is not determined, etc., it may be displayed in a single color without changing the shade or hue of the time range in which the gradation 65 is displayed.

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

Incidentally, as described above, the management center 6 manages a large number of mining machines operating at the mine site. Therefore, displaying a list of 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 the machine is operating, and, if an alarm is generated, a brief explanation regarding the alarm. Maintenance personnel and the like can comprehensively manage simple situations of a plurality of mining machines by visually checking the machine list screen 50.

Then, when analyzing details about an alarm that has occurred, clicking the detail display button 51 in accordance with the mouse pointer 53 enables transition to the machine state screen 60 shown in FIG. Various icons are also displayed on the machine list screen 50 of FIG. As a result, maintenance personnel and the like can intuitively recognize an alarm to be preferentially analyzed from the icon display.

DESCRIPTION OF SYMBOLS 1 Excavation machine 2 Dump truck 20 Sensor 21 Sensor data processing part 24 Wireless transmission part 31 Wireless reception part 32 Display control part 33 Display 35 Operation part 41 Graph preparation part 42 Alarm determination part 43 Relevance information storage part 44 Icon generation part 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 64 Graph specific information 65 Gradation 66 Numerical display area C Confirmed icon G Graph P Predictive icon R Alarm icon T Warning icon

Claims

An operation management device for a self-propelled mining machine that manages the mining machine based on information wirelessly communicated from a plurality of mining machines,
A wireless receiver that wirelessly receives numerical information measured by a plurality of sensors provided in the mining machine;
Based on the numerical information, a graph creation unit that creates a time-series graph indicating the measurement value of any one of the sensors;
Based on the numerical information, an alarm determination unit that determines different types of alarms corresponding to a plurality of alert levels;
An icon generator for generating different types of icons corresponding to the alarm;
A screen creation unit for creating a machine state screen displaying the graph and the icon corresponding to the same time axis;
A display device for displaying the machine status screen;
Operation management device for self-propelled mining equipment equipped with
When the numerical information is within an appropriate range, the alarm determination unit includes numerical information of another sensor that measures one or a plurality of parts that affect the measured value of the one sensor and the numerical value of the one sensor. When it is predicted that there is a possibility that an abnormality will occur in the one sensor in the future based on the information, it is determined as a predictive alarm,
The operation management device for a self-propelled mining machine according to claim 1, wherein the icon generation unit generates a sign icon corresponding to the sign alarm.
The operation management device for a self-propelled mining machine according to claim 2, wherein the screen creation unit changes a background of the machine state screen in a predetermined time range before and after the sign icon.
The said screen creation part changes the background color or color tone of the said machine state screen in steps according to the said warning level, when the said warning alarm is divided into several levels of warning levels. Operation management device for traveling mining machines.
The icon generation unit generates an alarm icon indicating that when the numerical information is out of a limit range,
The screen creation unit, after displaying the warning icon, changes to a confirmed icon of a different type from the warning icon when an operation indicating that the warning icon has been confirmed is performed. Operation management device for traveling mining machines.
The screen creation unit transitions from the machine list screen in which information about the alarm is grouped and displayed for each mining machine to the machine status screen for each of the plurality of sensors provided in the plurality of mining machines. The operation management device for a self-propelled mining machine according to claim 1.