JP2018138751A - Construction machine and management device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shovel 100 capable of transmitting data of appropriate quality at an appropriate timing.SOLUTION: The shovel 100 includes a primary data storage unit F1 for storing primary data outputted from an engine speed sensor SR1, an engine load factor sensor SR2 and the like in a nonvolatile storage medium so as to be able to refer to each time series group, a secondary data transmission unit F2 for calculating secondary data from the primary data for each time series group and transmitting it to a management device 300, and a primary data transmission unit F3 that, during operation of the shovel 100, transmits the primary data stored in a period corresponding to one or more secondary data specified by a transmission request signal to the management device 300 according to the transmission request signal from the management device 300.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a construction machine and a construction machine management apparatus.

  There is known an excavator management device that displays information related to a failure of components constituting the excavator (see Patent Document 1). The shovel transmits various types of information to the shovel management device via a communication line.

International Publication No. 2013/047408

  However, Patent Document 1 does not disclose details of information transmitted from the shovel to the shovel management device. When monitoring the state of the excavator with an excavator management device at a remote location, the quality of data transmitted from the excavator to the excavator management device is important. If all the primary data (raw data) sampled in time series by the shovel at a high sampling rate is transmitted to the shovel management device, the communication cost becomes enormous. On the other hand, secondary data (for example, statistical data such as an average value) obtained by processing primary data has qualitative variations depending on the sampling period setting method. In other words, high-quality secondary data that appropriately represents the current state of the excavator may be obtained, or low-quality secondary data that does not appropriately represent the current state of the shovel may be obtained.

  In view of the above, it is desirable to provide a construction machine that can transmit data of appropriate quality at appropriate timing.

  A construction machine according to an embodiment of the present invention includes a primary data storage unit that stores primary data output by a sensor attached to a construction machine in a storage medium so that the data can be referred to for each time series group, and the time series group A secondary data transmission unit that calculates secondary data from primary data and transmits it to an external device, and 1 specified by the transmission request signal according to a transmission request signal from the external device during operation of the construction machine Or a primary data transmission unit that transmits the primary data stored in a period corresponding to a plurality of the secondary data to the external device.

  By the above-mentioned means, a construction machine capable of transmitting appropriate quality data at appropriate timing is provided.

It is the schematic which shows the structural example of a work management system. It is a system configuration figure of a work management system. It is a functional block diagram of a work management system. It is a figure which shows the example of primary data. It is a figure which shows the example of secondary data. It is a sequence figure showing an example of a flow of processing in a work management system. It is an example of a display of temporal transition of secondary data. It is a table | surface which shows the example of the time transition of secondary data. It is a graph which shows the example of the time transition of primary data. It is a sequence diagram which shows another example of the flow of a process in a work management system. It is an example of a display of a time transition of an engine load factor. It is an example of a display of a time transition of engine speed.

  First, a work management system SYS including a shovel (excavator) 100 as a construction machine according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic diagram illustrating a configuration example of a work management system SYS. FIG. 2 is a system configuration diagram of the work management system SYS.

  The work management system SYS is a system that manages work performed by an excavator, and mainly includes an excavator 100 and a management device 300. The excavator 100 constituting the work management system SYS may be one or plural. The example of FIGS. 1 and 2 includes one excavator 100.

  The management device 300 is a device that manages the work of the excavator, and is, for example, a computer installed in a management center or the like outside the work site. The management device 300 may be a portable computer that can be carried by a user (for example, a portable information terminal such as a notebook PC, a tablet PC, or a smartphone).

  An upper swing body 3 is mounted on the lower traveling body 1 of the excavator 100 via a swing mechanism 2 so as to be capable of swinging. A boom 4 is attached to the upper swing body 3. An arm 5 is attached to the tip of the boom 4, and a bucket 6 is attached to the tip of the arm 5. The boom 4, the arm 5, and the bucket 6 as work elements constitute a drilling attachment that is an example of an attachment. The boom 4, arm 5, and bucket 6 are hydraulically driven by a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9, respectively. The upper swing body 3 is provided with a cabin 10 and is mounted with a power source such as an engine 11.

  As shown in FIG. 2, the excavator 100 includes an engine 11, a main pump 14, a pilot pump 15, a control valve 17, an operating device 26, a controller 30, an engine control device 74, and the like.

  The engine 11 is a drive source of the excavator 100, and is, for example, a diesel engine that operates so as to maintain a predetermined rotational speed. The output shaft of the engine 11 is connected to the input shafts of the main pump 14 and the pilot pump 15.

  The main pump 14 is a swash plate type variable displacement hydraulic pump that supplies hydraulic oil to the control valve 17 via a high-pressure hydraulic line 16. The main pump 14 changes the discharge flow rate per rotation according to the change in the swash plate tilt angle. The swash plate tilt angle is controlled by the regulator 14a. The regulator 14 a changes the swash plate tilt angle according to the change in the control current from the controller 30. The excavator 100 is provided with a discharge pressure sensor for detecting the discharge pressure of the main pump 14 and an angle sensor for detecting a swash plate tilt angle.

  The pilot pump 15 is a fixed displacement hydraulic pump that supplies hydraulic oil to various hydraulic control devices such as the operation device 26 via the pilot line 25.

  The control valve 17 is a set of flow rate control valves for controlling the flow of hydraulic oil related to the hydraulic actuator. The control valve 17 selectively supplies hydraulic oil received from the main pump 14 through the high-pressure hydraulic line 16 to one or a plurality of hydraulic actuators in accordance with changes in pilot pressure corresponding to the operation direction and operation amount of the operation device 26. . The hydraulic actuator includes, for example, a boom cylinder 7, an arm cylinder 8, a bucket cylinder 9, a left traveling hydraulic motor 1A, a right traveling hydraulic motor 1B, and a turning hydraulic motor 2A. A pressure sensor that detects the pressure of hydraulic oil in the hydraulic actuator is attached to the excavator.

  The operating device 26 is a device used by the operator of the excavator 100 for operating the hydraulic actuator. The operating device 26 receives the supply of hydraulic oil from the pilot pump 15 via the pilot line 25 and generates a pilot pressure. Then, the pilot pressure is applied to the pilot port of the corresponding flow control valve through the pilot line 25a. The pilot pressure changes according to the operation direction and the operation amount of the operation device 26. The pilot pressure sensor 15 a detects the pilot pressure and outputs the detected value to the controller 30.

  The controller 30 is a control device for controlling the excavator 100. In this embodiment, the controller 30 is configured by a computer including a CPU, a volatile storage medium, a nonvolatile storage medium, and the like. The CPU of the controller 30 reads out programs corresponding to various functions from the nonvolatile storage medium, loads them into the volatile storage medium and executes them, thereby realizing the functions corresponding to each of these programs.

  The engine control device 74 is a device that controls the engine 11. For example, the engine control device 74 controls the fuel injection amount and the like so that the engine speed set via the input device is realized. The engine control device 74 is connected to an engine speed sensor SR1, an engine load factor sensor SR2, a fuel injection amount sensor SR3, and the like. The engine load factor sensor SR2 may be an engine torque sensor.

  Each of the transmission device S1, the reception device S2, the positioning device S3, the attitude detection device S4, the orientation detection device S5, the camera S6, and the display device 40 attached to the upper swing body 3 is connected to the controller 30. The controller 30 performs various calculations based on information output from each of the receiving device S2, the positioning device S3, the posture detecting device S4, the orientation detecting device S5, and the camera S6. Then, the information generated based on the calculation result is transmitted to the outside from the transmission device S1 or displayed on the display device 40.

  The transmitting device S1 transmits information to the outside of the excavator 100. The transmission device S1 transmits information that can be received by the management device 300, for example. In the present embodiment, the transmission device S1 transmits information that can be received by the management device 300 to the management device 300 through a satellite line, a mobile phone line, or the like.

  The receiving device S2 receives information from the outside of the excavator 100. For example, the receiving device S2 receives information transmitted from the management device 300. In the present embodiment, the receiving device S2 receives information transmitted from the management device 300 through a satellite line, a mobile phone line, or the like.

  The positioning device S3 acquires information related to the position of the excavator 100. In the present embodiment, the positioning device S3 is a GNSS (GPS) receiver, and measures the latitude, longitude, and altitude of the location of the excavator 100.

  The attitude detection device S4 detects the attitude of the excavator 100. The posture of the excavator 100 is, for example, the posture of the excavation attachment. In the present embodiment, the posture detection device S4 includes a boom angle sensor, an arm angle sensor, a bucket angle sensor, and an airframe tilt sensor. The boom angle sensor is a sensor that acquires the boom angle. For example, the rotation angle sensor that detects the rotation angle of the boom foot pin, the stroke sensor that detects the stroke amount of the boom cylinder 7, and the inclination that detects the inclination angle of the boom 4. Includes (acceleration) sensors. The same applies to the arm angle sensor and the bucket angle sensor. The airframe tilt sensor is a sensor that acquires the airframe tilt angle, and detects, for example, the tilt angle of the upper swing body 3 with respect to the horizontal plane. In the present embodiment, the body tilt sensor is a biaxial acceleration sensor that detects the tilt angles of the upper swing body 3 around the front and rear axes and the left and right axes. In addition, the front-rear axis and the left-right axis of the upper swing body 3 pass through an excavator center point that is orthogonal to each other and one point on the swing axis of the shovel 100, for example. The body tilt sensor may be a three-axis acceleration sensor.

  The orientation detection device S5 detects the orientation of the excavator 100. The direction detection device S5 includes a geomagnetic sensor, a resolver or encoder related to the turning axis of the turning mechanism 2, a gyro sensor, and the like. In the present embodiment, the orientation detection device S5 is composed of a combination of a triaxial geomagnetic sensor and a gyro sensor.

  The controller 30 can acquire the toe trajectory information of the bucket 6 based on the outputs of the positioning device S3, the posture detection device S4, and the orientation detection device S5.

  The controller 30, the display device 40, the engine control device 74, etc. operate upon receiving power from the storage battery 70. The storage battery 70 is charged by a generator 11 a driven by the engine 11. The electric power of the storage battery 70 is also supplied to the starter 11b of the engine 11 and the like. The starter 11b is driven by the electric power from the storage battery 70 to start the engine 11.

  The camera S6 is attached to the upper swing body 3 and images the periphery of the excavator 100. In this embodiment, the camera S6 includes a rear camera that images the space behind the excavator 100, a right camera that images the right space of the excavator 100, and a left camera that images the left space of the excavator 100. including.

  The display device 40 is a device that displays various types of information, and is disposed in the vicinity of the driver's seat in the cabin 10. In the present embodiment, the display device 40 can display an image captured by the camera S6 and an image captured by the flying object 200. The image captured by the camera S6 includes a combined image obtained by combining captured images of a plurality of cameras. The composite image may be subjected to various image processing such as viewpoint conversion processing. The display device 40 may be a portable information terminal such as a notebook PC, a tablet PC, or a smartphone.

  The management device 300 includes a control device 301, a transmission device 302, a reception device 303, a display device 304, an operation input device 305, and the like.

  The control device 301 is a device for controlling the management device 300. In the present embodiment, the control device 301 is configured by a computer including a volatile storage medium, a nonvolatile storage medium, and the like. The CPU of the control device 301 reads out programs corresponding to various functions from the non-volatile storage medium, loads them into the volatile storage medium, and executes them, thereby realizing the functions corresponding to each of these programs.

  The transmission device 302 transmits information to the outside of the management device 300. The transmission device 302 transmits information that can be received by the excavator 100 to the excavator 100 through, for example, a satellite line or a mobile phone line.

  The receiving device 303 receives information from outside the management device 300. The receiving device 303 receives information transmitted from the excavator 100 through, for example, a satellite line or a mobile phone line.

  The display device 304 is a device for displaying various information. In the present embodiment, the display device 304 is a liquid crystal display, and displays information related to work by the excavator 100, information related to terrain data, and the like.

  The operation input device 305 is a device for receiving an operation input. In this embodiment, the operation input device 305 is a touch panel disposed on a liquid crystal display. A keyboard, mouse, or the like may be used.

  Next, various functional elements in the work management system SYS will be described with reference to FIG. FIG. 3 is a functional block diagram of the work management system SYS. The work management system SYS mainly includes a primary data storage unit F1, a secondary data transmission unit F2, a primary data transmission unit F3, and a transmission request unit F4. In the present embodiment, the controller 30 of the excavator 100 has a primary data storage unit F1, a secondary data transmission unit F2, and a primary data transmission unit F3, and the control device 301 of the management device 300 has a transmission request unit F4.

  The primary data storage unit F1 is a functional element that stores data output from a sensor attached to a construction machine. The data stored in the primary data storage unit F1 is, for example, raw raw data or almost raw data (for example, time series data), and is hereinafter referred to as “primary data”. In the present embodiment, the primary data storage unit F1 stores the primary data output from the sensor attached to the excavator in a non-volatile storage medium so that it can be referenced in units of time series groups. This non-volatile storage medium is a storage medium mounted on the excavator 100, for example, a storage medium provided in the controller 30. Specifically, the primary data storage unit F1 stores measurement data output by the engine speed sensor SR1, the engine load factor sensor SR2, and the like in time series at a sampling interval of several tens of milliseconds. And primary data storage part F1 makes reference possible in a group unit by giving an identification number every several seconds (for example, 100 samples) and making a group. The identification number is associated with, for example, information on the sampling start time and sampling end time of each group, information on the first sample number and the last sample number of each group, and the like.

  FIG. 4 shows an example of primary data stored in a nonvolatile storage medium. Specifically, FIG. 4A is a graph showing temporal changes in engine speed and engine load factor, which are primary data stored in the nonvolatile storage medium. FIG. 4A shows a state in which the identification numbers D1,..., D5,..., D10,. Indicated by area. FIG. 4B shows the primary data stored in the nonvolatile storage medium in a table format. FIG. 4B shows a state in which primary data of 100 samples from the sample number sm1 sampled at time t1 to the sample number sm100 sampled at time t100 are grouped by the identification number D1.

  The primary data storage unit F1 may store the primary data sampled when the shovel is in a predetermined operation mode over a longer period than the primary data sampled when the shovel is in another operation mode. In this case, the primary data stored in the non-volatile storage medium when the shovel is in another operation mode is earlier than the primary data stored in the non-volatile storage medium when the shovel is in the predetermined operation mode. It can be overwritten with subsequent primary data. For example, the primary data storage unit F1 determines whether or not the excavator is in the idling mode based on the outputs of various sensors. The idling mode is, for example, an operation mode that brings about a state where the load on the engine 11 is extremely low or a state where there is substantially no load on the engine 11. Then, the primary data stored when it is determined that the excavator is in the idling mode is prevented from being overwritten by the subsequent primary data. Alternatively, the order of overwriting is delayed. However, even the primary data stored when it is determined that the excavator is in the idling mode is not limited to this when a predetermined period (for example, two weeks) has elapsed since the recording time. That is, it may be overwritten with subsequent primary data in the same manner as the primary data stored when the excavator is in another operating mode.

  Referring to the example of FIG. 4, for example, when the period represented by the identification numbers D1 and D5 is the idling mode, the primary data stored during the period represented by the identification numbers D2 to D4 is the identification number D6. May be overwritten with primary data sampled during the period represented by ~ D8.

  The secondary data transmission unit F2 is a functional element that transmits data derived from one or more primary data to an external device. The data transmitted by the secondary data transmitting unit F2 is, for example, processed data (for example, feature data) obtained by processing the primary data, and is hereinafter referred to as “secondary data”. In the present embodiment, the secondary data transmission unit F2 calculates secondary data for each group from one or a plurality of primary data stored in a non-volatile storage medium so that reference can be made in units of groups, and transmits the secondary data to an external device. Specifically, an average value and a standard deviation are calculated from measurement data of engine speeds of 100 samples sampled in each period. The same applies to the engine load factor. Then, the calculated average value and standard deviation of the engine speed, the average value and standard deviation of the engine load factor, and the like are transmitted to the management device 300. The engine load factor may be an engine torque.

  In this way, the secondary data transmitting unit F2 converts the waveform data representing the temporal transition of the primary data into a feature vector having a plurality of secondary data as vector components, compresses the information amount, and then compresses the secondary data. A feature vector as a set of data is transmitted to the management apparatus 300.

  The secondary data transmission unit F2 may calculate and transmit further secondary data based on the secondary data. The further secondary data is, for example, the Mahalanobis distance as the degree of abnormality which is an index indicating how abnormal the combination of the secondary data is. The Mahalanobis distance is a value used in the Mahalanobis-Taguch (MT) method, and is derived based on the average value of the engine speed, the standard deviation, the average value of the engine load factor, the standard deviation, and the like. An index other than the Mahalanobis distance such as the Euclidean distance may be used as the degree of abnormality.

  The secondary data transmission unit F2 normally calculates the secondary data in real time and collectively manages the secondary data calculated during a predetermined time interval such as once every 5 hours and once a day. Transmit to device 300. However, the secondary data may be transmitted to the management apparatus 300 every time the secondary data is calculated.

  FIG. 5 shows, in tabular form, an example of secondary data calculated by the secondary data transmission unit F2 every 2 seconds. In the example of FIG. 5, the secondary data transmission unit F2 includes the engine speed average value SA, the engine speed standard deviation SD, the engine load ratio average value LA, the engine load ratio standard deviation LD, and the Mahalanobis distance as the degree of abnormality. M is calculated.

  The primary data transmission unit F3 is a functional element that transmits primary data to an external device in response to a transmission request signal from the external device. In the present embodiment, the primary data transmission unit F3 transmits primary data to the management apparatus 300 in response to a transmission request signal from the management apparatus 300 during operation of the excavator. The primary data transmitted at this time is, for example, primary data stored in a period corresponding to one or a plurality of secondary data specified by the transmission request signal. Specifically, when the period corresponding to the secondary data specified by the transmission request signal is the period represented by the identification number D1 (see FIG. 5), the primary data for 100 samples sampled in that period is managed. To 300. The primary data includes engine rotation speed measurement data for 100 samples and engine load factor measurement data for 100 samples (see the broken-line rectangular region G1 in FIG. 4).

  The transmission request unit F4 is a functional element that requests the construction machine to transmit primary data. In the present embodiment, the transmission request unit F4 transmits a transmission request signal to the excavator 100 when a predetermined condition is satisfied.

  “When the predetermined condition is satisfied” includes a case where an input from an operator who operates the management apparatus 300 is received, a case where a value of secondary data received from the construction machine satisfies a predetermined condition, and the like. “When the operator's input is accepted” is, for example, when a request for browsing 100-sample primary data that is the basis of secondary data for a specific period is input by the operator via the operation input device 305. It is. “When the value of the secondary data received from the construction machine satisfies a predetermined condition” is, for example, when the degree of abnormality (for example, Mahalanobis distance) derived from the secondary data for a specific period exceeds a predetermined value. is there. The transmission request unit F4 may calculate the degree of abnormality instead of the primary data transmission unit F3. In this case, the calculation of the degree of abnormality by the primary data transmission unit F3 is omitted.

  The transmission request signal includes information that can specify one or more of secondary data transmitted by the construction machine. The information is, for example, an identification number assigned to each group of primary data.

  Here, the flow of processing in the work management system SYS will be described with reference to FIG. FIG. 6 is a sequence diagram showing the flow of processing related to the control device 310 mounted on the management device 300, the operator who operates the management device 300, and the controller 30 mounted on the excavator 100.

  As shown in FIG. 6, the controller 30 is activated each time the excavator 100 is activated, and stops when the excavator 100 is stopped. The controller 30 transmits secondary data to the control device 301 at a predetermined time during operation (SQ1). The control device 301 stores the secondary data received from the controller 30 in a non-volatile storage medium. This non-volatile storage medium is a storage medium installed in the management apparatus 300, for example, a storage medium provided in the control apparatus 301.

  The operator logs in to the control device 301 at a desired timing (SQ2) and receives login permission (SQ3). And the secondary data browsing request regarding a specific shovel is transmitted with respect to the control apparatus 301 (SQ4). When receiving the secondary data browsing request, the control device 301 displays the temporal transition of the secondary data related to the specified excavator among the secondary data stored so far on the display device 304 (SQ5). .

  7 is an example of the temporal transition of the secondary data displayed on the display device 304, and FIG. 8 is an example of the temporal transition of the secondary data stored in the nonvolatile storage medium of the control device 301. . Specifically, FIG. 7 is a graph showing the Mahalanobis distance for each of the 20 periods represented by the 20 identification numbers D1 to D20.

  The operator who sees the display notices that the Mahalanobis distance for each period represented by the identification numbers D18 to D20 is remarkably high, and inputs a primary data browsing request regarding the identification number D18 (SQ6). Specifically, the operator touches the coordinate P1 on the display device 304 that represents the Mahalanobis distance related to the identification number D18. In response to the touch operation, the control device 301 specifies the coordinate P1 corresponding to the place where the touch operation is performed, and thus specifies the identification number D18 corresponding to the coordinate P1. And the transmission request signal which requests | requires transmission of primary data is transmitted toward the controller 30 (SQ7). In this case, the transmission request unit F4 includes the identification number D18 in the transmission request signal as information that can specify the secondary data (that is, the period can be specified). The secondary data emphasized by the broken-line rectangle AR in FIG. 8 indicates the secondary data specified by the identification number D18.

  The transmission request unit F4 may automatically transmit a transmission request signal to the excavator 100 when it detects that the Mahalanobis distance related to the identification number D18 has been remarkably increased without waiting for the operator's input. Good. For example, when the Mahalanobis distance corresponding to a certain identification number exceeds a preset threshold, the transmission request unit F4 may automatically transmit a transmission request signal including the identification number to the excavator 100. .

  When receiving the transmission request signal, the primary data transmission unit F3 of the controller 30 transmits the primary data stored in the period corresponding to the identification number included in the transmission request signal to the control device 301 (SQ8). The primary data stored in the period corresponding to the identification number may include at least one of the primary data stored in the preceding predetermined period and the primary data stored in the subsequent predetermined period. For example, when the identification number D18 is included in the transmission request signal, the primary data transmission unit F3 directs the primary data stored in the periods corresponding to the identification numbers D17, D18, and D19 to the control device 301. You may send it. Alternatively, primary data stored in a period corresponding to each of the identification numbers D17 and D18, primary data stored in a period corresponding to each of the identification numbers D18 and D19, and the like may be transmitted. When receiving the primary data from the controller 30, the control device 301 displays the temporal transition of the primary data on the display device 304 (SQ9). For example, the control device 301 displays the temporal transition of the primary data in a graph. Or you may display the animation by the computer graphic model which reproduces the motion of the shovel 100 based on the received primary data.

  As long as the primary data is not erased, the controller 30 can display information on each of the primary data and the secondary data on the display device 40 installed in the cabin 10. For example, the controller 30 can display the temporal transition of each of the primary data and the secondary data in a graph, or can display an animation based on a computer graphic model that reproduces the movement of the excavator 100 based on the primary data.

  The primary data transmission unit F3 may delete the transmitted primary data. For example, overwritten primary data may be permitted to be overwritten by subsequent primary data.

  FIG. 9 is an example of temporal transition of primary data displayed on the display device 304. Specifically, FIG. 9 displays the temporal transition of primary data (engine speed and engine load factor) sampled during the period specified by the identification number D18 included in the transmission request signal. The time transition in FIG. 9 corresponds to the time transition in the broken-line rectangular region G18 in FIG.

  The operator who sees this display can confirm the details of the temporal transition of the primary data (engine speed and engine load factor). Specifically, the temporal transition of primary data for 100 samples sampled from the first sampling time D18-1 to the 100th sampling time D18-100 can be confirmed. Therefore, the cause of the Mahalanobis distance exceeding a preset threshold value can be analyzed in more detail. Thereafter, the operator logs out (SQ10).

  Next, the flow of processing when the control device 301 transmits a primary data transmission request signal to the controller 30 when the excavator 100 is not operating will be described with reference to FIG. This description applies similarly when the excavator 100 is outside the communication range. FIG. 10 is a sequence diagram showing the processing flow. The processing shown in FIG. 10 is the same as the processing shown in FIG. 6 until the control device 301 transmits a transmission request signal to the controller 30 (up to SQ7), and thus the description up to SQ7 is omitted.

  When the control device 301 does not receive primary data from the shovel 100 within a predetermined waiting time after transmitting the transmission request signal to the shovel 100, the control device 301 notifies the outside (SQ9A). For example, the control device 301 notifies the operator that at least one of the excavator is not operating, the controller 30 is in a sleep state, and the primary data has not yet been received from the excavator. . Specifically, a text message indicating that fact is displayed on the display device 304. A voice message indicating that may be output.

  On the other hand, when the primary data is received from the shovel 100 within a predetermined waiting time after the transmission request signal is transmitted to the shovel 100, the control device 301 may notify the outside to that effect. For example, the control device 301 may notify the operator that at least one of the excavator is in operation and that primary data has been received from the excavator.

  When the control device 301 does not receive the primary data within a predetermined waiting time, when the secondary data is received for the first time from the excavator 100 (SQ1-2), the control device 301 browses again from the operator. Even if the request is not received, the transmission request signal is retransmitted (SQ7-2). For example, the control device 301 retransmits the transmission request signal even after the operator logs out. This is because the browsing request has already been received, that is, it can be determined that the transmission reservation has already been received. The transmission request signal may be retransmitted every time a predetermined retransmission time elapses. However, the control device 301 may prohibit retransmission of the transmission request signal. This is to limit the transmission timing of the transmission request signal when a browsing request is received from the operator.

  The control device 301 that has retransmitted the transmission request signal receives primary data from the controller 30 within a predetermined waiting time (SQ8). In this case, since the excavator is operating and the controller 30 is also operating, the control device 301 can reliably receive the primary data.

  Thereafter, when the operator who issued the browsing request logs in again (SQ2-2), the control device 301 indicates that the primary data related to the past browsing request has been acquired together with the login permission (SQ3-2). (SQ3-3). For example, a text message indicating that primary data has been acquired during logout is displayed on the display device 304.

  Upon receiving the notification, the operator retransmits the primary data browsing request to the control device 301 (SQ6-2). For example, the operator touches a software button displayed on the display device 304 together with a text message such as “Do you want to display primary data?”. In response to the touch operation, the control device 301 displays the temporal transition of the already acquired primary data on the display device 304 (SQ9).

  A display example of temporal transition of primary data displayed on the display device 304 will be described with reference to FIGS. 11 and 12. FIG. 11 shows the temporal transition of the engine load factor as primary data, and FIG. 12 shows the temporal transition of the engine speed as primary data. A transition (waveform) indicated by a solid line in each of FIGS. 11 and 12 indicates a temporal transition based on actual primary data, and a transition (waveform) indicated by a broken line indicates an ideal temporal transition. For example, the ideal transition may be a transition determined in advance based on excavator design information or the like, or may be a transition determined based on past measurement data. The operator who sees this display can easily recognize how the actual transition of the primary data deviates from the ideal transition.

  In the example shown in FIGS. 11 and 12, the management device 300 individually displays the temporal transition of the engine load factor and the temporal transition of the engine speed individually on the full screen. That is, the temporal transition of one parameter is displayed on one screen. However, the management apparatus 300 may display temporal transitions of two or more parameters simultaneously on one screen. For example, two or more subwindows may be displayed side by side, or time transitions of two or more parameters may be displayed in an overlapping manner. The operator who sees this display can easily recognize the relationship between the temporal transition of one parameter and the temporal transition of other parameters.

  As described above, the excavator 100 stores the primary data output from the sensor attached to the excavator 100 in the storage medium so that the primary data can be referenced for each time series group, and the primary data for each time series group. The secondary data transmission unit F2 that calculates the next data and transmits it to the management device 300, and one or a plurality of second data specified by the transmission request signal according to the transmission request signal from the management device 300 during operation of the excavator 100 A primary data transmission unit F3 that transmits primary data stored in a period corresponding to the next data to the management apparatus 300; The management apparatus 300 includes a transmission request unit F4 that transmits a transmission request signal including information that can specify one or more of the secondary data transmitted by the excavator 100 to the excavator 100 when a predetermined condition is satisfied. Have. With this configuration, the excavator 100 basically transmits secondary data having a capacity smaller than that of the primary data to the management apparatus 300, and only receives the transmission request signal, and sends the minimum necessary primary data to the management apparatus 300. Send. Therefore, it is possible to transmit data of an appropriate quality at an appropriate timing. Also, the communication volume and communication cost can be suppressed.

  When the management apparatus 300 does not receive primary data from the excavator 100 within a predetermined waiting time after transmitting a transmission request signal to the excavator 100, when the secondary data is first received from the excavator 100 thereafter, The transmission request signal may be retransmitted. With this configuration, the management apparatus 300 can receive primary data from the shovel 100 more reliably regardless of whether or not the shovel 100 is currently operating. This is because primary data can be received when communication with the excavator 100 is possible.

  When the management apparatus 300 does not receive primary data from the excavator 100 within a predetermined waiting time after transmitting the transmission request signal to the excavator 100, the management apparatus 300 transmits the transmission request signal every time a predetermined retransmission time elapses. May be retransmitted. With this configuration, the management apparatus 300 can receive data from the shovel 100 even when the excavator 100 is in operation and cannot receive primary data, such as when the radio wave condition is poor or when the excavator 100 is out of the communication range. Primary data can be received more reliably. This is because primary data can be received when communication with the excavator 100 is possible.

  Further, when the primary data is received from the excavator 100, the management apparatus 300 may notify the operator that at least one of the excavator 100 is in operation and that the primary data has been received from the excavator 100. With this configuration, the management apparatus 300 can notify the operator of the reason why the temporal transition of the primary data can be displayed.

  When the management apparatus 300 does not receive primary data from the excavator 100 within a predetermined waiting time after transmitting the transmission request signal to the excavator 100, the management apparatus 300 indicates that the excavator 100 is not operating and the excavator 100. The operator may be notified that at least one of the primary data has not yet been received. With this configuration, the management apparatus 300 can notify the operator of the reason why the temporal transition of the primary data cannot be displayed.

  Further, “when the predetermined condition is satisfied” includes a case where an input from the operator is accepted, or a case where the value of the secondary data received from the excavator 100 satisfies the predetermined condition. With this configuration, the management apparatus 300 can receive only the minimum necessary primary data from the excavator 100 and can prevent reception of unnecessary primary data.

  Moreover, the management apparatus 300 may display the actual transition and the ideal transition of the primary data received from the excavator 100 at the same time. With this configuration, the management apparatus 300 can make the operator easily recognize how the actual transition of the primary data deviates from the ideal transition.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, an operator who operates the management apparatus 300 performs various operations via the operation input device 305 attached to the management apparatus 300 and is displayed on the display device 304 attached to the management apparatus 300. View various information. However, the present invention is not limited to this configuration. An operator who operates the management apparatus 300 may access the management apparatus 300 as a server via wireless communication using a portable information terminal such as a notebook PC, a tablet PC, or a smartphone.

  The construction machine may be a bulldozer, a wheel loader, or the like.

  DESCRIPTION OF SYMBOLS 1 ... Lower traveling body 1A ... Left traveling hydraulic motor 1B ... Right traveling hydraulic motor 2 ... Turning mechanism 2A ... Turning hydraulic motor 3 ... Upper turning body 4 ... Boom 5 ... Arm 6 ... Bucket 7 ... Boom cylinder 8 ... Arm cylinder 9 ... Bucket cylinder 10 ... Cabin 11 ... Engine 11a ... Generator 11b ... Starter DESCRIPTION OF SYMBOLS 14 ... Main pump 14a ... Regulator 15 ... Pilot pump 15a ... Pilot pressure sensor 16 ... High pressure hydraulic line 17 ... Control valve 25, 25a ... Pilot line 26 ... Operation Device 30 ... Controller 40 ... Display device 70 ... Storage battery 74 ... Engine control device 100 ... Excavator DESCRIPTION OF SYMBOLS 300 ... Management apparatus 301 ... Control apparatus 302 ... Transmission apparatus 303 ... Reception apparatus 304 ... Display apparatus 305 ... Operation input apparatus F1 ... Primary data storage part F2 ... Two Next data transmission unit F3 ... Primary data transmission unit F4 ... Transmission request unit S1 ... Transmission device S2 ... Reception device S3 ... Positioning device S4 ... Attitude detection device S5 ... Direction detection Device S6 ... Camera

Claims (8)

A primary data storage unit that stores primary data output by a sensor attached to a construction machine in a storage medium so that the data can be referenced for each time series group; and
A secondary data transmission unit that calculates secondary data from the primary data for each time series group and transmits the secondary data to an external device;
During the operation of the construction machine, the external device stores the primary data stored in a period corresponding to one or a plurality of the secondary data specified by the transmission request signal in response to a transmission request signal from the external device. A primary data transmission unit for transmitting to
Construction machinery. A primary data storage unit that stores primary data output by a sensor attached to a construction machine in a storage medium so that the data can be referenced for each time series group; and
A secondary data transmission unit that calculates secondary data from the primary data for each time-series group and transmits it to a management device;
While the construction machine is in operation, the management device stores the primary data stored in a period corresponding to the one or more secondary data specified by the transmission request signal in response to a transmission request signal from the management device. A primary data transmitter to transmit to
A management device external to a construction machine having
A transmission request unit that transmits the transmission request signal including information that can specify one or more of the secondary data transmitted by the construction machine to the construction machine when a predetermined condition is satisfied;
Management device. When the primary data is not received from the construction machine within a predetermined waiting time after the transmission request signal is transmitted to the construction machine, and then when the secondary data is first received from the construction machine , Configured to retransmit the transmission request signal,
The management device according to claim 2. If the primary data is not received from the construction machine within a predetermined waiting time after the transmission request signal is transmitted to the construction machine, the transmission request signal is retransmitted every time a predetermined retransmission time elapses. Configured to send,
The management device according to claim 2 or 3. When receiving the primary data from the construction machine, it is configured to be able to notify the outside that at least one of the construction machine is in operation and that the primary data has been received from the construction machine,
The management device according to claim 2. When the primary data is not received from the construction machine within a predetermined waiting time after the transmission request signal is transmitted to the construction machine, the construction machine is not operating, and the construction machine It is configured to be able to notify at least one of not receiving the primary data to the outside,
The management apparatus according to claim 2. When the predetermined condition is satisfied, including the case where an operator's input is accepted, or the case where the value of the secondary data received from the construction machine satisfies the predetermined condition,
The management device according to any one of claims 2 to 6. The actual transition of the primary data received from the construction machine and the ideal transition are configured to be displayed simultaneously.
The management device according to claim 2.