JP7083597B2 - Construction machinery and its management equipment - Google Patents

Description

The present invention relates to a construction machine and a management device for the construction machine.

A shovel management device that displays information on a failure of a component constituting a shovel is known (see Patent Document 1). The excavator transmits various information to the excavator management device via a communication line.

International Publication No. 2013/04748

However, Patent Document 1 does not disclose the details of the information transmitted from the excavator to the excavator management device. When monitoring the condition of the excavator with a remote excavator management device, the quality of the data transmitted from the excavator to the excavator management device is important. If all of the primary data (raw data) sampled in time series by the excavator at a high sampling rate is transmitted to the excavator management device, the communication cost becomes enormous. On the other hand, the secondary data (for example, statistical data such as the average value) obtained by processing the primary data will have qualitative variations depending on the sampling period setting method. That is, there are cases where high-quality secondary data that appropriately expresses the current state of the excavator can be obtained, and there are cases where low-quality secondary data that cannot appropriately express the current state of the excavator can be obtained.

In view of the above, it is desired to provide a construction machine capable of transmitting data of appropriate quality at appropriate timing.

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

The means described above provide a construction machine capable of transmitting data of the right quality at the right time.

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

First, a work management system SYS including an 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 showing 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 for managing work by a shovel, and is mainly composed of a shovel 100 and a management device 300. The number of excavators 100 constituting the work management system SYS may be one or a plurality. The examples of FIGS. 1 and 2 include one shovel 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 (for example, a portable information terminal such as a notebook PC, a tablet PC, or a smartphone) that can be carried by the user.

The upper swivel body 3 is rotatably mounted on the lower traveling body 1 of the excavator 100 via the swivel mechanism 2. 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, arm 5, and bucket 6 as working elements constitute an excavation attachment, which is an example of an attachment. The boom 4, arm 5, and bucket 6 are hydraulically driven by the boom cylinder 7, arm cylinder 8, and bucket cylinder 9, respectively. A cabin 10 is provided in the upper swing body 3, and a power source such as an engine 11 is mounted on the upper swing body 3.

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 for the excavator 100, and is, for example, a diesel engine that operates so as to maintain a predetermined rotation 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 the high pressure hydraulic line 16. In the main pump 14, the discharge flow rate per rotation changes according to the change in the tilt angle of the swash plate. The tilt angle of the swash plate is controlled by the regulator 14a. The regulator 14a changes the tilt angle of the swash plate according to the change of the control current from the controller 30. The excavator 100 is equipped with a discharge pressure sensor that detects the discharge pressure of the main pump 14 and an angle sensor that detects the tilt angle of the swash plate.

The pilot pump 15 is a fixed-capacity hydraulic pump that supplies hydraulic oil to various hydraulic control devices such as an operating device 26 via a pilot line 25.

The control valve 17 is a set of flow control valves that control the flow of hydraulic oil related to the hydraulic actuator. The control valve 17 selectively supplies the hydraulic oil received from the main pump 14 through the high-pressure hydraulic line 16 to one or a plurality of hydraulic actuators according to the change in the pilot pressure corresponding to the operation direction and the 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, a turning hydraulic motor 2A, and the like. The excavator is equipped with a pressure sensor that detects the pressure of hydraulic fluid in the hydraulic actuator.

The operating device 26 is a device used by the operator of the excavator 100 to operate the hydraulic actuator. The operating device 26 receives hydraulic oil from the pilot pump 15 via the pilot line 25 and generates 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 15a 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 composed of a computer including a CPU, a volatile storage medium, a non-volatile storage medium, and the like. The CPU of the controller 30 reads 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 the programs.

The engine control device 74 is a device that controls the engine 11. The engine control device 74 controls, for example, the fuel injection amount and the like so that the engine rotation speed set via the input device is realized. The engine speed sensor SR1, the engine load factor sensor SR2, the fuel injection amount sensor SR3, and the like are connected to the engine control device 74. 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 swivel body 3 is connected to the controller 30. The controller 30 executes various calculations based on the information output by each of the receiving device S2, the positioning device S3, the attitude 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 transmission device S1 transmits information to the outside of the excavator 100. The transmission device S1 transmits, for example, information that can be received by the management device 300. In this 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. The receiving device S2 receives, for example, the information transmitted by the management device 300. In this embodiment, the receiving device S2 receives information transmitted by the management device 300 through a satellite line, a mobile phone line, or the like.

The positioning device S3 acquires information regarding the position of the excavator 100. In this embodiment, the positioning device S3 is a GNSS (GPS) receiver, and measures the latitude, longitude, and altitude of the position where the excavator 100 exists.

The posture detection device S4 detects the posture of the excavator 100. The posture of the excavator 100 is, for example, the posture of the excavation attachment. In this embodiment, the attitude detection device S4 includes a boom angle sensor, an arm angle sensor, a bucket angle sensor, and a machine body tilt sensor. The boom angle sensor is a sensor that acquires the boom angle, for example, a rotation angle sensor that detects the rotation angle of the boom foot pin, a stroke sensor that detects the stroke amount of the boom cylinder 7, and an inclination that detects the inclination angle of the boom 4. (Acceleration) Includes sensors and the like. 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 swivel body 3 with respect to a horizontal plane. In this embodiment, the body tilt sensor is a two-axis accelerometer that detects the tilt angle around the front-rear axis and the left-right axis of the upper swing body 3. The front-rear axis and the left-right axis of the upper swivel body 3 pass, for example, the excavator center point which is one point on the swivel axis of the shovel 100 at right angles to each other. The airframe tilt sensor may be a 3-axis accelerometer.

The orientation detection device S5 detects the orientation of the excavator 100. The orientation detection device S5 includes a geomagnetic sensor, a resolver or encoder related to the swivel axis of the swivel mechanism 2, a gyro sensor, and the like. In this embodiment, the orientation detection device S5 is composed of a combination of a 3-axis geomagnetic sensor and a gyro sensor.

The controller 30 can acquire the locus information of the toes of the bucket 6 based on the outputs of the positioning device S3, the posture detecting device S4, and the orientation detecting device S5.

The controller 30, the display device 40, the engine control device 74, and the like operate by receiving electric power from the storage battery 70. The storage battery 70 is charged by the generator 11a driven by the engine 11. The electric power of the storage battery 70 is also supplied to the starter 11b and the like of the engine 11. 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 swivel body 3 and images the surroundings of the excavator 100. In this embodiment, the camera S6 is a rear camera that captures the space behind the excavator 100, a right-side camera that captures the space on the right side of the excavator 100, and a left-side camera that captures the space on the left side of the excavator 100. including.

The display device 40 is a device that displays various information, and is arranged in the vicinity of the driver's seat in the cabin 10. In this 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 composite image obtained by synthesizing the images captured by 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 mobile 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 this embodiment, the control device 301 is composed of a computer including a volatile storage medium, a non-volatile storage medium, and the like. The CPU of the control device 301 reads 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 the 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, a mobile phone line, or the like.

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

The display device 304 is a device for displaying various information. In this embodiment, the display device 304 is a liquid crystal display, and displays information related to work by the shovel 100, information related to topographical 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 arranged on the liquid crystal display. It may be a keyboard, a mouse, or the like.

Next, with reference to FIG. 3, various functional elements in the work management system SYS will be described. FIG. 3 is a functional block diagram of the work management system SYS. The work management system SYS mainly has 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 this 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 by 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 this embodiment, the primary data storage unit F1 stores the primary data output by the sensor attached to the excavator in the non-volatile storage medium so that it can be referred to in a time-series group unit. This non-volatile storage medium is a storage medium mounted on the shovel 100, and is, for example, a storage medium provided in the controller 30. Specifically, the primary data storage unit F1 stores the measurement data output by the engine rotation speed sensor SR1, the engine load factor sensor SR2, and the like in a time series at a sampling interval of several tens of milliseconds. Then, the primary data storage unit F1 assigns an identification number every few seconds (for example, 100 samples) and groups them so that they can be referred to in group units. The identification number is associated with, for example, information about the sampling start time and sampling end time of each group, information about 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 non-volatile storage medium. Specifically, FIG. 4A graphically shows the temporal transition of the engine speed and the engine load factor, which are the primary data stored in the non-volatile storage medium. FIG. 4A shows a broken line rectangle in which the identification numbers D1, ..., D5, ..., D10, ... Are assigned every 2 seconds and the primary data is grouped every 100 samples. Shown in area. FIG. 4B shows the primary data stored in the non-volatile storage medium in tabular form. FIG. 4B shows a state in which the 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 excavator is in a predetermined operating mode for a longer period than the primary data sampled when the excavator is in another operating mode. In this case, the primary data stored in the non-volatile storage medium when the excavator is in another operating mode is earlier than the primary data stored in the non-volatile storage medium when the excavator is in the predetermined operating 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 in which the load on the engine 11 is extremely low or a state in which the load on the engine 11 is substantially zero. Then, the primary data stored when the excavator is determined to be in the idling mode is not overwritten by the subsequent primary data. Alternatively, it is configured so that the order of overwriting is delayed. However, even if the primary data is stored when the excavator is determined to be in the idling mode, this does not apply when a predetermined period (for example, 2 weeks) has elapsed from the recording time. That is, it may be overwritten with the subsequent primary data in the same manner as the primary data stored when the excavator is in another operation mode.

Explaining with 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. It may be overwritten with the 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 a plurality of primary data to an external device. The data transmitted by the secondary data transmission unit F2 is, for example, processing data (for example, feature amount data) obtained by processing the primary data, and is hereinafter referred to as “secondary data”. In this embodiment, the secondary data transmission unit F2 calculates the secondary data for each group from one or a plurality of primary data stored in the non-volatile storage medium so as to be able to refer to each group, and transmits the secondary data to the external device. Specifically, the mean value and the standard deviation are calculated from the measurement data of the engine speeds of 100 samples sampled in each period. The same applies to the engine load factor and the like. Then, the calculated average value and standard deviation of the engine rotation 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 engine torque.

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

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

The secondary data transmission unit F2 normally calculates the secondary data in real time, and manages the secondary data calculated during that time at predetermined time intervals such as once every 5 hours and once a day. It transmits to the device 300. However, each time the secondary data is calculated, the secondary data may be transmitted to the management device 300.

FIG. 5 shows an example of the secondary data calculated every 2 seconds by the secondary data transmission unit F2 in a table format. In the example of FIG. 5, the secondary data transmission unit F2 has an engine rotation average value SA, an engine rotation standard deviation SD, an engine load factor average value LA, an engine load factor standard deviation LD, and a Mahalanobis distance as an abnormality degree. M is calculated.

The primary data transmission unit F3 is a functional element that transmits primary data to the external device in response to a transmission request signal from the external device. In this embodiment, the primary data transmission unit F3 transmits the primary data to the management device 300 in response to the transmission request signal from the management device 300 while the excavator is in operation. 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 management device manages the primary data for 100 samples sampled in that period. Send to 300. The primary data includes measurement data of engine rotation speed for 100 samples and measurement data of engine load factor 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 this embodiment, the transmission request unit F4 transmits a transmission request signal toward the excavator 100 when a predetermined condition is satisfied.

The "when the predetermined condition is satisfied" includes the case where the input of the operator who operates the management device 300 is accepted, the case where the value of the secondary data received from the construction machine satisfies the predetermined condition, and the like. "When the input of the operator is accepted" is, for example, when the operation request for viewing the primary data for 100 samples, which is the basis of the secondary data for a specific period, is input by the operator via the operation input device 305. Is. "When the value of the secondary data received from the construction machine meets the predetermined condition" is, for example, when the degree of abnormality (for example, Mahalanobis distance) derived from the secondary data for a specific period exceeds the predetermined value. be. 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 identify one or more of the secondary data transmitted by the construction machine. The information is, for example, an identification number assigned to each group of primary data.

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

As shown in FIG. 6, the controller 30 starts every time the shovel 100 is started, and stops when the shovel 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 the non-volatile storage medium. This non-volatile storage medium is a storage medium mounted on the management device 300, and is, for example, a storage medium provided in the control device 301.

The operator logs in to the control device 301 at a desired timing (SQ2) and receives login permission (SQ3). Then, a secondary data browsing request for a specific excavator is transmitted to the control device 301 (SQ4). Upon 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 up to that point on the display device 304 (SQ5). ..

FIG. 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 non-volatile storage medium of the control device 301. .. Specifically, FIG. 7 graphically displays the Mahalanobis distances 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 request for viewing the primary data regarding the identification number D18 (SQ6). Specifically, the operator touch-operates the coordinates P1 on the display device 304 representing the Mahalanobis distance with respect to the identification number D18. In response to the touch operation, the control device 301 identifies the coordinate P1 corresponding to the touch-operated place, and eventually identifies the identification number D18 corresponding to the coordinate P1. Then, a transmission request signal requesting transmission of primary data is transmitted to 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 highlighted by the dashed rectangular AR in FIG. 8 indicates the secondary data identified by the identification number D18.

Even if the transmission request unit F4 automatically transmits the transmission request signal toward the excavator 100 when it detects that the Mahalanobis distance with respect to the identification number D18 has increased significantly without waiting for the input of the operator. good. For example, when the Mahalanobis distance corresponding to a certain identification number exceeds a preset threshold value, the transmission request unit F4 may automatically transmit a transmission request signal including the identification number toward the excavator 100. ..

When the primary data transmission unit F3 of the controller 30 receives the transmission request signal, the primary data transmission unit F3 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 transmission request signal includes the identification number D18, the primary data transmission unit F3 directs the primary data stored in the period corresponding to each of the identification numbers D17, D18, and D19 to the control device 301. You may send it. Alternatively, the primary data stored in the period corresponding to each of the identification numbers D17 and D18, the primary data stored in the period corresponding to each of the identification numbers D18 and D19, and the like may be transmitted. When the control device 301 receives 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. Alternatively, an animation by a computer graphic model that reproduces the movement of the excavator 100 may be displayed based on the received primary data.

As long as the primary data is not erased, the controller 30 can display information about 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 by a computer graphic model that reproduces the movement of the excavator 100 based on the primary data.

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

FIG. 9 is an example of the temporal transition of the primary data displayed on the display device 304. Specifically, FIG. 9 shows the temporal transition of the 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 temporal transition in FIG. 9 corresponds to the temporal 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, it is possible to confirm the temporal transition of the primary data for 100 samples sampled from the first sampling time D18-1 to the 100th sampling time D18-100. Therefore, it is possible to analyze in more detail the cause of the Mahalanobis distance exceeding the preset threshold value. After that, the operator logs out (SQ10).

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

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

On the other hand, the control device 301 may notify the outside 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. For example, the control device 301 may notify the operator at least one of the fact that the shovel is in operation and that the primary data has been received from the shovel.

Then, when the control device 301 does not receive the primary data within the predetermined waiting time, and then when the secondary data is first received from the excavator 100 (SQ1-2), the operator browses again. 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 it can be determined that the browsing request has already been received, that is, the transmission reservation has already been received. The transmission request signal may be retransmitted each time a predetermined retransmission time elapses. However, the control device 301 may prohibit the retransmission of the transmission request signal. This is to limit the transmission timing of the transmission request signal when a viewing request is received from the operator.

The control device 301 that has retransmitted the transmission request signal receives the 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.

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

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

An example of displaying the temporal transition of the primary data displayed on the display device 304 will be described with reference to FIGS. 11 and 12. FIG. 11 shows the time transition of the engine load factor as the primary data, and FIG. 12 shows the time transition of the engine speed as the primary data. The transition (waveform) shown by the solid line in each of FIGS. 11 and 12 shows the temporal transition based on the actual primary data, and the transition (waveform) shown by the broken line shows the ideal temporal transition. The ideal transition may be, for example, 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 transition of the actual 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 rotation speed on the full screen. That is, the temporal transition of one parameter is displayed on one screen. However, the management device 300 may simultaneously display the temporal transition of two or more parameters on one screen. For example, two or more subwindows may be displayed side by side, or the temporal transition 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 another parameter.

In this way, the excavator 100 has a primary data storage unit F1 that stores the primary data output by the sensor attached to the excavator 100 in the storage medium so that it can be referred to 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 more two specified by the transmission request signal according to the transmission request signal from the management device 300 while the excavator 100 is in operation. It has a primary data transmission unit F3 that transmits primary data stored in a period corresponding to the next data to the management device 300. When the predetermined condition is satisfied, the management device 300 transmits a transmission request signal F4 that transmits a transmission request signal including information that can identify one or more of the secondary data transmitted by the excavator 100 to the excavator 100. Have. With this configuration, the excavator 100 basically transmits secondary data having a capacity smaller than that of the primary data to the management device 300, and transfers the minimum necessary primary data to the management device 300 only when a transmission request signal is received. Send. Therefore, it is possible to transmit data of appropriate quality at appropriate timing. In addition, the amount of communication and the communication cost can be suppressed.

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

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

Further, when the management device 300 receives the primary data from the excavator 100, the management device 300 may notify the operator at least one of the fact that the excavator 100 is in operation and the fact that the primary data is received from the excavator 100. With this configuration, the management device 300 can inform the operator of the reason why the time transition of the primary data can be displayed.

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

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

Further, the management device 300 may simultaneously display the actual transition and the ideal transition of the primary data received from the excavator 100. With this configuration, the management device 300 can easily make the operator recognize how the transition of the actual 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-mentioned examples, and various modifications and substitutions are made to the above-mentioned examples without departing from the scope of the present invention. Can be added.

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

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

1 ・ ・ ・ Lower traveling body 1A ・ ・ ・ Hydraulic motor for left traveling 1B ・ ・ ・ Hydraulic motor for right traveling 2 ・ ・ ・ Swing mechanism 2A ・ ・ ・ Hydraulic motor for turning 3 ・ ・ ・ Upper swivel body 4 ・ ・ ・Boom 5 ... Arm 6 ... Bucket 7 ... Boom cylinder 8 ... Arm cylinder 9 ... Bucket cylinder 10 ... Cabin 11 ... Engine 11a ... Generator 11b ... Starter 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 300 ... Management device 301 ... Control device 302 ... Transmission device 303 ...・ Receiver 304 ・ ・ ・ Display device 305 ・ ・ ・ Operation input device F1 ・ ・ ・ Primary data storage unit F2 ・ ・ ・ Secondary data transmission unit F3 ・ ・ ・ Primary data transmission unit F4 ・ ・ ・ Transmission request unit S1 ・・ ・ Transmission device S2 ・ ・ ・ Receiver device S3 ・ ・ ・ Positioning device S4 ・ ・ ・ Attitude detection device S5 ・ ・ ・ Direction detection device S6 ・ ・ ・ Camera

Claims (8)

A primary data storage unit that stores the primary data output by a sensor attached to the construction machine in a storage medium so that it can be referred to for each time-series group, which is acquired during the operation of the construction machine .
A secondary data transmission unit that calculates secondary data from the primary data and transmits it to an external device for each time-series group.
While the construction machine is in operation, 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 the transmission request signal from the external device. Has a primary data transmitter to transmit to,
Construction machinery. A primary data storage unit that stores the primary data output by a sensor attached to the construction machine in a storage medium so that it can be referred to for each time-series group, which is acquired during the operation of the construction machine .
A secondary data transmission unit that calculates secondary data from the primary data and transmits it to the management device for each time-series group.
During the operation of the construction machine, in response to the transmission request signal from the management device, the management device stores the primary data stored in the period corresponding to the one or more secondary data specified by the transmission request signal. Primary data transmitter to send to
It is a management device outside the construction machine that has
It has a transmission request unit that transmits the transmission request signal including information that can identify 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, or when the secondary data is first received from the construction machine thereafter. , It is 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 re-transmitted every time the predetermined retransmission time elapses. Configured to send,
The management device according to claim 2 or 3. When the primary data is received from the construction machine, the construction machine is in operation.
And, it is configured so that at least one of receiving the primary data from the construction machine can be notified to the outside.
The management device according to any one of claims 2 to 4. 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 construction machine is not operating and the construction machine does not receive the primary data. It is configured to notify the outside of at least one of the fact that the primary data has not been received yet.
The management device according to any one of claims 2 to 5. When the predetermined condition is satisfied, it includes a case where the input of the operator is accepted or a 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. It is configured so that the actual transition and the ideal transition of the primary data received from the construction machine can be displayed at the same time.
The management device according to any one of claims 2 to 7.

Images