JP6095007B2 - Work machine operating data collection system - Google Patents

Description

  The present invention relates to an operation data collection system for work machines.

  In many cases, work machines such as excavators and dump trucks used in mines around the world are required to be continuously operated in order to improve productivity. However, when a sudden failure occurs, it is necessary to stop the work machine for inspection / maintenance or parts replacement.

  In order to prevent such a sudden failure in advance, it is necessary to constantly monitor the operating status of the work machine and to perform a diagnostic process for catching a sign of the failure.

  Regular monitoring of the operating status of the work machine is performed by a monitoring system installed at the central base, not at the site. That is, operation data of the work machine is collected at the central base via the wireless communication network, and the operation status of the work machine is sequentially monitored on a plurality of monitoring screens. When the number of work machines to be monitored increases, it becomes difficult to monitor the status of the work machines at the same time, so a diagnostic processing technology is introduced to detect deviations from the trend of operating data during normal operation. In this way, an alarm is issued to improve efficiency.

  In order to stably collect work machine operation data, a base station of a mobile phone communication network or a fixed station equivalent to an access point of a wireless LAN is installed at a mine site, and a server at a central base via a network such as the Internet. It is connected with. The server collects operating data by communicating with an operating data collection device mounted on the work machine via a fixed station.

  However, for example, if a work machine (excavator) equipped with an operation data collection device has moved out of the fixed-station communication area, the server cannot collect operation data from the work machine (excavator). End up. In addition, at the mine site, the terrain changes drastically due to daily excavation work, and the wireless environment changes every day, so that it may occur outside the coverage area of the fixed station unintentionally.

  For such a problem, the excavator includes a shovel having a wireless communication device and a dump truck having a wireless data transfer device that reciprocates between an office having a wireless communication device (server). There is one that carries data as a carrier (see, for example, Patent Document 1).

JP 2011-139186 A

  In the above-mentioned Patent Document 1, for example, even when the excavator moves outside the communicable area of the fixed station, the excavator is operated when the dump truck approaches the excavator to load the excavated ore and the like. Data is available. Thereafter, when the dump truck moves into the communicable area of the fixed station, the excavator operation data is collected by communicating with the office server.

  By the way, when the site of a mine or the like is vast, the number of dump trucks close to one excavator is not limited to one. When one excavator was excavating outside the communication area of the fixed station, for example, four dump trucks may load ores excavated by this excavator and move to different dumping grounds. obtain.

  According to the technique of Patent Document 1 described above, all dump trucks close to the excavator collect excavator operation data and move. For this reason, when one of the dump trucks moves to the vicinity of the fixed station, the operation data of the excavator can be collected in the server via the fixed station. However, since the amount of excavator operation data to be collected is large, if all dump trucks communicate data to a server via a fixed station, useless communication increases and communication costs increase.

  The present invention has been made based on the above-described matters, and an object of the present invention is to provide an operation data collection system for a work machine that can prevent an increase in communication cost while maintaining reliability of communication.

  In order to solve the above problems, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above-mentioned problems. To give an example, between the operation data collection device mounted on a plurality of self-propelled work machines and a server provided in the center. In an operation data collection system for a work machine that exchanges data via a fixed station, the operation data collection device includes a mobile station communication control unit that communicates with other operation data collection devices, and the operation data collection device via the fixed station. A fixed station communication control unit that communicates with the server, an operation data storage unit that stores operation data of the own work machine and operation data of other work machines, and a ratio of the communication connection time with the server with respect to a certain time interval. A communication establishment ratio calculation unit for calculating, and the server selects an operation data collection device having the highest communication connection time ratio calculated by the communication establishment ratio calculation unit, and selects the selected operation data. Characterized by collecting the operation data of another other work machines relaying operation data storage portion of the current device.

  According to the present invention, an excavator excavating excavated material at an excavation site at a mine site, an operation pattern of a dump truck that reciprocates between the excavated site and an earth discharging site, and loads, transports, and releases the excavated material, and the dump and excavator. As a result of grasping the possibility of contact between work machines, it is possible to provide an operating data collection system for work machines that can prevent communication costs from increasing while maintaining communication reliability. .

It is the schematic which shows the whole structure of one Embodiment of the working data collection system of the working machine of this invention. It is the schematic explaining operation | movement of one Embodiment of the working data collection system of the working machine of this invention. It is a schematic block diagram which shows the working data collection apparatus which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the operation data of the operation data collection apparatus which comprises one Embodiment of the operation data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the terminal registration information of the working data collection apparatus which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the communication establishment ratio information of the working data collection apparatus which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a schematic block diagram which shows the server which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the communication establishment ratio information of the server which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a flowchart figure which shows the processing content of the data processing part of the server which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the main command of the data processing part of the server which comprises one Embodiment of the working data collection system of the working machine of this invention. It is a table | surface figure which shows the structural example of the subcommand of the data processing part of the server which comprises one Embodiment of the working data collection system of the working machine of this invention.

  Hereinafter, an embodiment of an operation data collection system for a work machine according to the present invention will be described with reference to the drawings by taking an excavator or a dump truck (hereinafter abbreviated as “dump”) used in a mine or the like as a work machine. FIG. 1 is a schematic diagram showing the overall configuration of an embodiment of an operation data collection system for a work machine according to the present invention, and FIG. 2 is an outline for explaining the operation of an embodiment of the operation data collection system for a work machine according to the present invention. FIG.

  As shown in FIG. 1, a self-propelled work machine 1 such as an excavator 1 </ b> A or a dump truck 1 </ b> B is used in a mine quarry, and an operation data collection system 300 that collects operation data of these work machines 1 is provided. It is used. In this operational data collection system 300, a server 200 is installed in the vicinity of a quarry or in a remote management center 201. The excavator 1A, the dump 1B, and the like are equipped with a position acquisition device (not shown) that acquires the position of the own device using the GPS satellite 405 and various sensors (not shown). The operation data collection devices 100A and 100B mounted on the excavator 1A, the dumper 1B, and the like collect and accumulate operation data acquired by various sensors and transmit the operation data to the server 200 via the wireless communication line 400. ing. Reference numeral 401 denotes a fixed station.

  The excavator 1A is an ultra-large hydraulic excavator, and includes a traveling body 2, a revolving body 3 provided on the traveling body 2 so as to be capable of turning, a cab 4, and a front provided at the front center of the revolving body 3. And a work machine 5. The front work machine 5 includes a boom 6 that is rotatably provided on the swing body 3, an arm 7 that is rotatably provided at the tip of the boom 6, and a bucket 8 that is attached to the tip of the arm 7. Has been. In the driver's seat 4, a controller network 9 is provided for collecting state quantities relating to the operation state of each part of the excavator 1 </ b> A. The operation data collection device 100A is installed in the cab 4 and the fixed station communication antenna 103A and the mobile station communication antenna 102A are installed in a place with good visibility such as the upper part of the cab 4.

  Further, the dump truck 1B has a frame 505 forming a main body, a driver's cab 504, front wheels 501 and rear wheels 502, and a hinge pin (not shown) provided at a rear portion of the frame 505 in a vertical direction. A rotatable loading platform 503 and a pair of left and right hoist cylinders (not shown) that rotate the loading platform 503 in the vertical direction are configured. Further, in the cab 504, a controller network 509 is provided for collecting state quantities relating to the operation state of each part of the dump 1B. The operation data collection device 100B is installed in the cab 504, and the fixed station communication antenna 103B and the mobile station communication antenna 102B are installed in a place with good visibility such as the upper part of the cab 504.

  Next, the operation procedure of the operation data collection system will be described with reference to FIG. The operation data collection device 100B mounted on the dump machine 1B of the work machine 1 collects operation data of the work machine 1 (dump 1B and excavator 1A) and measures one operation cycle of the work machine 1 (dump 1B and excavator 1A). To do. Here, one operation cycle means the time from the dump 1B loading and transporting the excavated material of the excavator 1A to discharging to the excavation site and returning to the excavator 1A again.

  At the mine site, a plurality of work machines 1 (dump 1B and excavator 1A) are working as a group for each work area, and the dump 1B basically performs a repetitive operation traveling along the same route. The operation data collection device 100B of the dump 1B measures the time during which communication connection was possible with the operation data collection device 100A mounted on the excavator 1A, which is another work machine 1, and calculates the ratio of communication connection time per one operation cycle. Calculate the communication establishment ratio between mobile stations shown. In addition, the operation data collection device 100B of the dump 1B measures the time during which communication connection with the server 200 is possible via the fixed station 401, and indicates the ratio of communication establishment time between fixed stations indicating the ratio of communication connection possible time for one operation cycle. Calculate

  Next, the server 200 communicates with the operation data collection device 100B mounted on the work machine 1 (dump 1B) via a network such as the Internet and the fixed station 401, and the work station 1 (dump 1B) communicates with the mobile station. The communication establishment ratio and the communication establishment ratio between fixed stations are acquired, and the operation data of the work machine 1 (dump 1B and excavator 1A) is always collected.

  For example, when the work machine 1 (excavator 1A) moves outside the communicable area of the fixed station 401, the server 200 operates the data collection device 100A mounted on the work machine 1 (excavator 1A) moved out of the communicable area. The operation data collection device 100B mounted on another work machine 1 (dump 1B) having the highest possibility of communication connection is searched based on the communication establishment ratio between mobile stations and the communication establishment ratio between fixed stations. It operates to collect the operation data of the work machine 1 (excavator 1A) that has moved outside the communicable area via the data collection device 100B.

  Next, the configuration of the operation data collection device 100 mounted on the work machine 1 will be described with reference to FIGS. 3 to 6. FIG. 3 is a schematic configuration diagram showing an operation data collection device constituting an embodiment of an operation data collection system for a work machine according to the present invention, and FIG. 4 shows an embodiment of an operation data collection system for a work machine according to the present invention. FIG. 5 is a table showing an example of the configuration of operating data of the operating data collection device, and FIG. 5 is a configuration example of terminal registration information of the operating data collection device that constitutes an embodiment of the operating data collection system for work machines of the present invention. FIG. 6 is a table showing a configuration example of the communication establishment ratio information of the operation data collection device constituting one embodiment of the operation data collection system for the work machine according to the present invention. 3 to 6, the same reference numerals as those shown in FIGS. 1 and 2 are the same parts, and the detailed description thereof will be omitted.

  As shown in FIG. 3, the operation data collection device 100 includes a data processing unit 120, a mobile station communication control unit 112, a fixed station communication control unit 113, a communication establishment ratio calculation unit 130, an operation data reception unit 180, A communication establishment ratio storage unit 140, a terminal registration information storage unit 150, an operation data storage unit 160, and a command file storage unit 170 are provided.

The operation data receiving unit 180 receives operation data acquired by various sensors installed in the work machine 1 of the host vehicle. The operation data receiving unit 180 sequentially receives operation data from the work machine 1 of the own vehicle and stores it in the operation data storage unit 160.
FIG. 4 shows a configuration example of the operation data that the operation data receiving unit 180 receives from the work machine 1 of the own vehicle. The operation data is configured in a message format, and includes a reception date and time, a part system ID, a sensor ID, and a sensor value. Here, the reception date / time indicates the reception date / time of operation data measured by an internal clock of the operation data collection device 100 (not shown). The part system ID is an ID for identifying a part system such as an engine or a pump constituting the work machine 1 of the host vehicle. The sensor ID is an ID for specifying a sensor attached to each part system. That is, a sensor can be uniquely specified by a combination of a part system ID and a sensor ID. The sensor value indicates a numerical value measured by the sensor.

The operation data received by the operation data receiving unit 180 from the work machine 1 of the own vehicle is stored in the operation data storage unit 160. The operation data storage unit 160 is roughly divided into two areas. One is an area for storing operation data of the work machine of the own vehicle, and the other is an area for storing operation data of the work machine of another vehicle. Since the operation data received from the operation data receiving unit 180 is operation data of the work machine of the own vehicle, the operation data is stored in an area for storing operation data of the work machine of the own vehicle. On the other hand, the area for storing the operation data of the work machine of the other vehicle is an area for temporarily storing the operation data of the work machine of the other vehicle in response to a command from the server 200.
The operation data is recorded in a file format at regular time intervals and stored in a date-named directory. Accordingly, when a request for transmission of operation data on a specific day is received from the server 200, the storage location of the operation data is easily known.

  The mobile station communication control unit 112 controls communication connection with the operation data collection device 100 of another vehicle via the mobile station communication antenna 102. The inter-mobile station communication is, for example, a wireless LAN ad hoc mode communication, which is a method for realizing P2P communication between terminals. In the case of a wireless LAN ad hoc mode, an access point identifier called SSID (Service Set IDentifier) is set to be the same in all the operation data collection devices 100, thereby enabling communication connection between a plurality of terminals. Accordingly, the mobile station communication control unit 112 transmits a request asking whether or not communication connection is possible to the operation data collection device 100 of another vehicle, and confirms whether or not communication connection is possible by confirming a response to the request. Therefore, by confirming this response, it is possible to recognize the timing and communication connection time when communication connection is possible even in a situation where data communication is not actually performed with the operation data collection device 100 of another vehicle. Become.

  The fixed station communication control unit 113 manages communication connection with the server 200 via the fixed station communication antenna 103 and the fixed station 401. The fixed station communication corresponds to, for example, wireless LAN infrastructure mode communication, and takes a communication form in which the fixed station 401 is a master unit and the operation data collection device 100 is a slave unit. In the case of the wireless LAN infrastructure mode, a plurality of operating data collection devices 100 can communicate with the fixed station 401 by setting the same SSID. Here, the fixed station communication control unit 113 has a configuration different from that of the mobile station communication control unit 112, and communication can be used independently by setting different SSIDs. In addition, the fixed station communication control unit 113 transmits a request asking whether or not communication connection is possible to the fixed station 401, and confirms whether or not communication connection is possible by confirming a response thereto. Therefore, by confirming this response, it is possible to recognize the timing at which communication connection is possible and the communication connection time even when data communication with the fixed station 401 is not actually performed.

  The terminal registration information storage unit 150 stores terminal registration information indicating a list of terminals that are communication connection candidates at the work site. FIG. 5 shows a configuration example of the terminal registration information. The terminal registration information includes a terminal identification number, a model-unit, an IP address, a machine attribute, and a work area number.

  Here, the identification number is a number for uniquely identifying the terminal, and the server 200 is fixed at 0. Other than that, it is possible to specify a terminal with a simple number by setting the number so that it does not overlap between different terminals. The model-number machine is information for specifying the work machine 1 on which the operation data collection device 100 is mounted. Here, the server 200 is fixed at 0. The IP address is address information for uniquely identifying the operation data collection device 100 on the communication network. By grasping this IP address, it is possible to establish data communication with a specific operation data collection device 100. The machine attribute is information for knowing the attribute of the work machine 1 on which the operation data collection device 100 is mounted. The work area No is information for recognizing a work place where the work machine 1 is operating and recognizing other operation data collection devices 100 operating in the same work area.

  According to the terminal registration information shown in FIG. 5, the dump of No. 0011 is the work machine with identification number 11, the dump of No. 0012 is the work machine with identification number 12, and the excavator of No. 0021 is the work machine with identification number 21. , Each having a separate operation data collection device 100 and disposed in the same work area 100.

  Returning to FIG. 3, the communication establishment ratio calculation unit 130 receives information from the mobile station communication control unit 112 and the fixed station communication control unit 113 about whether or not to communicate with the operation data collection device 100 of another vehicle, or the fixed station 401. The time corresponding to one operation cycle is calculated based on the communication connection availability information, and the communication establishment ratio with the operation data collection device 100 of another vehicle for one operation cycle and the communication with the fixed station 401 for one operation cycle The establishment ratio is calculated, and the result is stored in the communication establishment ratio storage unit 140.

  FIG. 6 shows information stored in the communication establishment ratio storage unit 140. In the communication establishment ratio storage unit 140, the calculation result of one operation cycle measured by the communication establishment ratio calculation unit 130 shown in FIG. 6A and the operation data collection device 100 of another vehicle shown in FIG. Two pieces of information, that is, a communication connection time with the server 200 and a communication establishment rate per one operation cycle are stored. Here, a case where the working machine of the own vehicle is the working machine 1 with the identification number 11 is shown as an example. The operation content of the communication establishment ratio calculation unit 130 will be described later.

Returning to FIG. 3, when the data processing unit 120 communicates with the operation data collection device 100 or the server 200 of another vehicle via the mobile station communication control unit 112 and the fixed station communication control unit 113, the data processing unit 120 responds to a request from a communication partner. In addition to processing that responds, it performs processing that handles requests from here. The situation is summarized in the following three cases.
(1) Transmission processing when a transmission request for operating data of the working machine of the host vehicle is received from the server 200 via the fixed station communication control unit 113.
(2) Collecting operation data for the work machine of another vehicle when receiving an operation data collection instruction for the work machine of another vehicle from the server 200 via the fixed station communication control unit 113.
(3) Processing for transmitting operation data of the work machine of the own vehicle when a request for transmission of operation data of the work machine of the own vehicle is received from the operation data collection device 100 of the other vehicle via the mobile station communication control unit 113.

(1) is a response process to an operation data transmission request that is always accepted from the server 200 when the operation data collection device 100 is within the communicable area of the fixed station 401.
(2) receives an instruction from the server 200 to collect the operation data from the operation data collection device 100 when the operation data collection device 100 of the other vehicle has moved outside the communicable area of the fixed station 401. It is a response process when When receiving a request for collecting operation data of the operation data collection device 100 of another vehicle from the server 200, a command file is transmitted from the server 200 and stored in the command file storage unit 170. The data processing unit 120 performs communication with the specified operation data collection device 100 based on the command file, and executes operation data collection processing. In that case, the data processing unit 120 temporarily records the operation data received from the operation data collection device 100 of the other vehicle in an area in which the operation data of the work machine of the other vehicle of the operation data storage unit 160 is stored.

  (3), when the work machine of the own vehicle has moved outside the communicable area of the fixed station 401, it receives a request to send the work data of the work machine of the own vehicle from the operation data collection device 100 of the other car. It is a transmission process in the case of.

Next, details of processing performed by the communication establishment ratio calculation unit 130 of the operation data collection device 100 will be described.
Returning to FIG. 3, the communication establishment ratio calculation unit 130 receives information from the mobile station communication control unit 112 and the fixed station communication control unit 113 about whether or not to communicate with the operation data collection device 100 of another vehicle, or the fixed station 401. 6 is calculated based on the communication connection availability information, and the communication connection time with the terminal of the other vehicle and the communication establishment ratio are calculated.

First, a method for calculating one operation cycle will be described. The calculation procedure for one operation cycle differs depending on whether the work machine of the own vehicle is the dump 1B or the excavator 1A.
The calculation procedure of one operation cycle when the work machine of the own vehicle is the dump 1B is as follows.
(Step 1): The communication establishment ratio calculation unit 130 refers to the terminal registration information storage unit 150 and extracts an excavator from among the work machines operating in the same work area No. For example, in the case of FIG. 5, when the work machine of the own vehicle is a dump with “identification number: 11”, the excavator with “identification number: 21” is selected.

  (Step 2): Next, the communication establishment ratio calculation unit 130 extracts communication connection availability information with the excavator of “identification number: 21” from the mobile station communication control unit 112, and the “identification number: 21”. The timing at which the communication connection with the excavator is started and the time from the disconnection to the communication connection once again are measured. Since this time is considered to be the time until the dumper leaves the excavator and releases it, and then returns to the excavator again, it is considered to correspond to one operation cycle.

Next, the calculation procedure of one operation cycle when the work machine of the own vehicle is the excavator 1A is as follows.
(Step 1): The communication establishment ratio calculation unit 130 refers to the terminal registration information storage unit 150, and extracts a dump from the work machines operating in the same work area No. For example, in the case of FIG. 5, when the self-working machine is an excavator with “identification number: 21”, dumps with “identification number: 11” and “identification number: 12” are selected.

  (Step 2): Next, the communication establishment discount calculation unit 130 extracts communication connection availability information between the dump of “identification number: 11” and “identification number: 12” from the mobile station communication control unit 112, The timing at which the communication connection between the “identification number: 11” and “dump with the identification number: 12” is started and the time until the communication connection is once disconnected and then connected again are measured, and the average value is obtained. . This time is considered to be equivalent to one operating cycle because each dump is considered to be the time it takes for each dump to leave the excavator and return to the excavator.

  The communication establishment ratio calculation unit 130 calculates one operation cycle by the above method and records it in one operation period of the communication establishment ratio storage unit 140 illustrated in FIG.

Next, a method for calculating the communication connection time with other terminals of the communication establishment ratio calculation unit 130 will be described.
Returning to FIG. 3, the communication establishment ratio calculation unit 130 measures the communication connectable time with another terminal during the measurement time of the one operation cycle described above, and uses the integrated value of the time as the communication connection time in FIG. In the communication connection time of the communication establishment ratio storage unit 140 shown in FIG. For example, when the work machine of the own vehicle is “identification number: 11”, the communication establishment ratio calculation unit 130 sends the excavator of “identification number: 21” from the mobile station communication control unit 112 to measure one operation cycle. The timing of communication connection start and the timing of communication connection again after being disconnected are measured based on the communication connection availability information. During this time, the communication connection time with the operation data collection device 100 of the other vehicle can be calculated by integrating the communicable time between the dump of “identification number: 12” and the excavator of “identification number: 21”. On the other hand, the communication connection time with the fixed station is calculated based on the communication connection availability information with the server 200 received from the fixed station communication control unit 113.

  The communication establishment ratio calculation unit 130 calculates the communication connection time by the above method and records it in the communication connection time of the communication establishment ratio storage unit 140 illustrated in FIG.

Next, a method for calculating the communication establishment ratio with other terminals of the communication establishment ratio calculation unit 130 will be described.
The communication establishment ratio calculation unit 130 calculates the communication establishment ratio by dividing the one operation cycle determined above and the communication connection time, and sets the communication establishment ratio in the communication establishment ratio storage unit 140 illustrated in FIG. Record.

  Next, the configuration of the server 200 will be described with reference to FIGS. FIG. 7 is a schematic configuration diagram showing a server constituting one embodiment of an operation data collection system for a work machine according to the present invention, and FIG. 8 is a server constituting one embodiment of an operation data collection system for a work machine according to the present invention. FIG. 9 is a flowchart showing the processing contents of the data processing unit of the server constituting one embodiment of the working machine operation data collection system of the present invention, and FIG. FIG. 11 is a table showing a configuration example of a main command of a data processing unit of a server constituting an embodiment of an operation data collection system for work machines according to the present invention. FIG. 11 shows an embodiment of an operation data collection system for work machines according to the present invention. It is a table | surface figure which shows the structural example of the subcommand of the data processing part of the server which comprises this form. 7 to 11, the same reference numerals as those shown in FIGS. 1 to 6 are the same parts, and detailed description thereof is omitted.

  As shown in FIG. 7, the server 200 includes a data processing unit 210, a fixed station communication control unit 220, an operation data storage unit 230, a communication establishment ratio storage unit 250, a terminal registration information storage unit 260, and a command file storage. Unit 240 and an input / output processing unit 270.

  The fixed station communication control unit 220 controls communication connection with the operation data collection apparatus 100 via the fixed station 401. As the fixed station communication, wireless LAN infrastructure mode communication corresponds, and in this case, the fixed station 401 serves as a master unit and the operation data collection device 100 serves as a slave unit.

  The data processing unit 210 issues an operation data transmission request to the operation data collection device 100 via the fixed station communication control unit 220 and the fixed station 401, receives the operation data based on the response, and receives the operation data. The process of saving in 230 is performed mainly. The processing contents of the data processing unit 210 will be described in detail later.

  The operation data storage unit 230 stores operation data received from the operation data collection device 100 by the server 200.

  The terminal registration information storage unit 260 stores the same terminal registration information shown in FIG. 5 as that stored in the terminal registration information storage unit 150 of the operation data collection device 100.

  The input / output processing unit 270 outputs various information stored in the operation data storage unit 230, the communication establishment ratio storage unit 250, and the terminal registration information storage unit 260 on a screen using a monitor or the like. Enable editing.

The communication establishment ratio storage unit 250 stores the latest communication establishment ratio information based on the communication establishment ratio information shown in FIG. 6 received from the plurality of operation data collection devices 100.
FIG. 8 shows a configuration of communication establishment ratio information stored in the communication establishment ratio storage unit 250. As shown in FIG. 8, the communication establishment ratio information includes, for each work machine 1 indicated by the identification number, a fixed station-to-station communication establishment ratio defined by the ratio of the communication connection time with the fixed station 401 for one operation cycle, The latest value of the communication establishment ratio between mobile stations defined by the ratio of the communication connection time with the work machine 1 is stored.

A case where the communication establishment ratio of the work machine 1 having the “identification number: 11” is reflected in the communication establishment ratio information of the server 200 when the communication establishment ratio of the operation data collection device 100 illustrated in FIG. To do.
The communication establishment ratio information of the server 200 in FIG. 8 is obtained from the fact that the communication establishment ratio with the server 200 of “identification number: 0” is 66.7% in the communication establishment ratio information of the operation data collection device 100 in FIG. Reflecting this, 66.7% is stored in the column of communication between fixed stations of “identification number: 11”.
Further, the communication establishment ratios of “identification number: 12” and “identification number: 21” in the communication establishment ratio information of the operation data collection device 100 of FIG. 6 are 1.7% and 10.0%, respectively. In the communication establishment ratio information of the server 200 of No. 8, 1.7% is stored in the column of communication between mobile stations where “identification number: 11” and “identification number: 12” overlap, and “identification number” : 11 ”and“ identification number: 21 ”are 10.0% stored in the column of communication between mobile stations.

  Since the communication establishment ratio information of the server 200 is based on the communication establishment ratio information received from the operation data collection devices 100 of the plurality of work machines 1, for example, when information to be stored in the same column is received in an overlapping manner. Save the latest information over time. For example, in the column of communication between mobile stations where “identification number: 11” and “identification number: 12” overlap, the information from the work machine 1 with “identification number: 11” is stored in the above. : When the communication establishment ratio information is received from the work machine 1 of 12 ″, it is overwritten and saved as the latest information.

Next, processing contents in the data processing unit 210 of the server 200 will be described with reference to FIG.
First, in step (S2000), the data processing unit 210 reads the terminal registration information shown in FIG. 5 stored in the terminal registration information storage unit 260.

  Next, in step (S2100), the data processing unit 210 acquires the current date and time using an internal clock (not shown).

  Next, in step (S2200), the data processing unit 210 creates a main command file based on the terminal registration information acquired in steps (S2000) and (S2100) and the current date and time, and creates the created main command. The file is saved in the main command storage directory of the command file storage unit 240.

FIG. 10 shows a configuration example of the main command created by the data processing unit 210 in the processing step.
The acquisition of the operation data is mainly performed by a terminal having a command file, and is obtained by accessing and acquiring the target communication partner, so the command form is expressed as “GET”. Conversely, when data is transmitted mainly by a terminal having a command file, it is expressed as “PUT”. There are three types of arguments. The first argument is an identification number of the work machine 1 that is a communication target partner. The second argument is an identification number of the work machine 1 that is a generation source of the operation data to be acquired. The third argument specifies a date for which operation data is to be acquired.

  That is, the main command file shown in FIG. 10 includes “identification number: 11”, “identification number: 12”, and “identification number: 21” as communication targets in 2013 for work machines having the same identification number. This is a main command file for instructing to acquire the operation data on March 2nd. Regarding the main command file, the identification number of the work machine 1 that is the target communication partner of the first argument and the identification number of the work machine 1 that is the generation source of the operation data to be acquired of the second argument are the same.

  Returning to FIG. 9, the data processing unit 210 repeats the processing from S2300 onward for each terminal designated as the first argument of the command file. Hereinafter, processing in one terminal will be described.

  In step (S2300), the data processing unit 210 determines whether communication connection is possible with the operation data collection device 100 having the target identification number. That is, in the processing step, the data processing unit 210 makes a determination based on the communication connection availability information with the target operation data collection device 100 received from the fixed station communication connection unit 220. If it is determined that connection is possible, the process proceeds to step (S2400). If it is determined that connection is not possible, the process proceeds to step (S2700).

  In step (S2400), when communication is established with the operation data collection device 100 having the target identification number, the data processing unit 210 obtains communication establishment ratio information possessed by the operation data collection device 100. get. Then, the data processing unit 210 updates the information in the communication establishment ratio storage unit 250 based on the acquired communication establishment ratio information of the operation data collection device 100.

  In step (S2500), the data processing unit 210 performs main command file execution processing. The data processing unit 210 searches only the command line whose target identification number is the first argument from the main command file, and executes only the command line. That is, when a communication connection is currently made with “identification number: 11”, only the command line having “identification number: 11” as the first argument is executed, and the operation of “identification number: 11” is performed. The communication process is executed so as to obtain the operation data of the machine 1 on March 2, 2013. Here, the data processing unit 210 includes the operation data of the target date “identification number: 11” stored in the operation data storage unit 230 and the target of the operation data collection device 100 of “identification number: 11”. Communication is performed so as to acquire only unacquired operating data corresponding to the difference from the daily operating data.

Here, the communication procedure between the server 200 and the operation data collection device 100 when the main command is executed is as follows.
(Communication Procedure 1) The server 200 stores a file list of the operation data on the target date stored in the operation data collection device 100 in the operation data storage unit 160 in the area where the operation data of the work machine of the host vehicle is stored. Request and get.

  (Communication procedure 2) The server 200 creates a list of unrecovered operation data files based on the operation data file list of the target date received from the operation data collection device 100 and transmits it to the operation data collection device 100.

  (Communication Procedure 3) The operation data collection device 100 performs a process of searching the operation data storage unit 160 for an operation data file described in the operation data file list received from the server 200 and transmitting the operation data file to the server 200. .

  (Communication Procedure 4) The server 200 stores the operation data file received from the operation data collection device 100 in the operation data storage unit 230.

  Returning to FIG. 9, in step (S2600), the data processing unit 210 executes the execution process of the subcommand file. This subcommand file is a command file stored in the subcommand storage directory of the command file storage unit 240, and executes the subcommand file created in the processing step of step (S2700) described later. The subcommand is a command having different identification numbers for the first argument and the second argument. That is, it is a command for instructing to acquire operation data of another work machine 1 from the operation data collection device 100 of the work machine 1 to be communicated.

FIG. 11 shows a configuration example of the subcommand. In the case of this example, the command is an instruction to acquire the operation data of “identification number: 21” for “identification number: 11”.
In the case where the execution of the subcommand is required, the communication between the fixed stations with the work machine 1 specified as the second argument is disconnected, so that the second argument is set via the work machine 1 specified as the first argument. This is because the operation data of the designated work machine 1 is acquired. Accordingly, the following two types of processing are executed in this processing step.

  First, as a first process, a command file is generated for acquiring operation data of the work machine 1 specified as the second argument for the work machine 1 specified as the first argument among the subcommands. It is transmitted to the work machine 1 designated as one argument. Next, the subcommand itself is executed as the second processing.

Taking the case of executing the subcommand shown in FIG. 11 as an example, the communication procedure between the server 200 and the operation data collection device 100 is as follows.
(Communication Procedure 1) The server 200 transmits a command file described below for collecting operation data from “identification number: 21” to the operation data collection device 100 of “identification number: 11”. However, if it has already been transmitted, this step is skipped.
“Get 21 21 20130302”
(Communication Procedure 2) The operation data collection device 100 with “identification number: 11” stores the command file received from the server 200 in the command file storage unit 170. However, if it has already been received, this step is skipped.
In response to this, the data processing unit 120 of the operation data collection device 100 with the “identification number: 11” communicates with the operation data collection device 100 with the “identification number: 21” via the inter-mobile station communication control unit 112. Processing is executed according to the above command. Since this processing operation is the same as the processing content in the step (S2500) of the server 200, the description is omitted here.

  (Communication Procedure 3) The server 200 stores the operation data of the work machine of the other vehicle in the operation data storage unit 160 for the operation data collection device 100 of “identification number: 11”. Request and obtain a file list of operation data for the target date of identification number: 21 ″.

  (Communication Procedure 4) The server 200 determines that the “identification number: 21” has not been received based on the file list of the operation data of the target date of “identification number: 21” received from the operation data collection device 100 of “identification number: 11”. A list of collected operation data files is created and transmitted to the operation data collection device 100.

  (Communication Procedure 5) The operation data collection device 100 with “identification number: 11” receives the operation data file described in the list of operation data files with “identification number: 21” received from the server 200 as the operation data storage unit 160. The process which searches from the area | region which memorize | stores the operation data of the working machine of another vehicle, and transmits with respect to the server 200 is performed.

  (Communication Procedure 6) The server 200 stores the operation data file of “identification number: 21” received from the operation data collection device 100 of “identification number: 11” in the operation data storage unit 230.

  Returning to FIG. 9, the step (S2700) when communication connection with the target terminal is not possible in the step (S2300) of the data processing unit 210 will be described. The processing here is processing related to creation of a subcommand file for collecting the operation data of the target terminal, for which communication connection is impossible, via other terminals.

In step (S2700), the data processing unit 210 creates a subcommand file and stores it in the subcommand storage directory of the command file storage unit 240. There are the following three conditions as subcommand creation conditions in the processing step.
Condition 1: Created when the communication establishment ratio of communication between fixed stations is less than X% in the communication establishment ratio stored in the communication establishment ratio storage unit 250.
Condition 2: The operation data collection device 100 having the highest communication establishment rate of communication between mobile stations in the communication establishment rate stored in the communication establishment rate storage unit 250 is created so as to be designated as the first argument.
Condition 3: When the communication establishment ratio of communication between mobile stations is approximately the same in Condition 2, selection is made so that a work machine having a low moving speed is given priority based on machine attributes and the like.

  Condition 1 is that the operating data collection apparatus 100 that has established direct communication with the server 200 at a rate of X% or more does not create a subcommand file, but directly collects the operating data when the main command is executed. Is based. For example, when X is set to about 10%, in the case of the communication establishment ratio shown in FIG. 8, a subcommand is created only for “identification number: 21” and is collected via another operation data collection device 100. It will be.

  Condition 2 is based on the idea of deciding to mediate the operation data collection device 100 that is most likely to establish communication between mobile stations for a terminal that has become unable to communicate. For example, when “identification number: 21” is the target terminal, based on the communication establishment ratio shown in FIG. 8, the communication establishment ratio of communication between mobile stations is compared, and “identification number: 11” is 10.0% communication. In contrast to the establishment ratio, “identification number: 12” is 8.0%, and “identification number: 21” and the terminal having the largest communication connection ratio is determined to be “identification number: 11”. Can do.

Condition 3 is that when a plurality of terminals are listed as intermediary candidates in Condition 2 and their communication establishment ratios are approximately the same, in order to consider the stability of the communication connection, the machine attributes and movement of the work machine 1 This is a condition for comparing the speed and selecting the work machine with less movement to give priority.
Based on the above conditions, in this processing step, a subcommand file is created and stored in the subcommand storage directory of the command file storage unit 240.

  Returning to FIG. 9, in step (S2800), the data processing unit 210 determines whether or not the date acquired in step (S2100) has changed. If the date has not changed, the data processing unit 210 returns to step (S2300) and performs processing. If the date has changed repeatedly, the process proceeds to step S2900.

  In step (S2900), data processing unit 210 deletes the main command file and subcommand file stored in command file storage unit 240, and returns to step (S2100).

  As described above, the server 200 of the operation data collection system of the present invention operates to collect operation data from all the operation data collection devices 100 based on the main command, and a certain work machine 1 is outside the communicable area. In the case of moving to the work station 1, the work machine 1 capable of collecting the operation data most efficiently among the other work machines 1 operating in the same work area as the work machine 1 is determined as the inter-fixed station communication establishment ratio and the mobile station. It is determined based on the inter-communication establishment ratio, and can be operated so as to collect the operation data of the work machine 1 moved outside the communicable area of the fixed station 401 via the work machine 1 by the subcommand.

  According to one embodiment of the working machine operation data collection system of the present invention described above, the excavator 1A excavating the excavated material at the excavation site at the mine site, and the excavation site and the earthing site are reciprocated to load the excavated material. Focusing on the operation pattern with the dumper 1B to be transported and released, and the group of the dumper 1B and the excavator 1A, the possibility of contact between the work machines was grasped. It is possible to provide an operation data collection system for work machines that can prevent an increase in cost.

DESCRIPTION OF SYMBOLS 1 Work machine 1A Excavator 1B Dump 2 Running body 3 Revolving body 4 Driver's cab 5 Front work machine 9 Controller network 100 Operation data collection device 102 Mobile station communication antenna 103 Fixed station communication antenna 112 Mobile station communication control unit 113 Fixed station communication control unit 120 Data processing unit 130 Communication establishment rate calculation unit 140 Communication establishment rate storage unit 150 Terminal registration information storage unit 160 Operation data storage unit 170 Command file storage unit 180 Operation data reception unit 200 Server 210 Data processing unit 220 Fixed station communication control unit 230 Operation data storage unit 240 Command file storage unit 250 Communication establishment ratio storage unit 260 Terminal registration information storage unit 270 Input / output processing unit

Claims (6)

In an operation data collection system for a work machine that transfers data via a fixed station between an operation data collection device mounted on a plurality of self-propelled work machines and a server provided in the center,
The operation data collection device includes a mobile station communication control unit that communicates with other operation data collection devices, a fixed station communication control unit that communicates with the server via the fixed station, and operation data of the work machine. And an operation data storage unit that stores operation data of other work machines, and a communication establishment ratio calculation unit that calculates a ratio of communication connection time with the server with respect to a certain time interval,
The server selects the operation data collection device having the highest communication connection time ratio calculated by the communication establishment ratio calculation unit, and relays the operation data storage unit of the selected operation data collection device to another work machine. Operation data collection system for work machines, characterized by collecting the operation data of In the work machine operation data collection system according to claim 1 ,
The work machine is a dump truck and an excavator,
The operation data collection system for a work machine , wherein the certain time interval in the communication establishment ratio calculation unit is one operation cycle in which the dump truck reciprocates between the excavation site and the earthmoving site . The working machine operation data collection system according to claim 2 ,
Before Symbol 1 operating cycle, that the communication between the mounted on the dump truck and said shovel the operation data acquisition device is connected, is calculated by measuring the time until reconnected to After once cut An operating data collection system for work machines. In the working machine operation data collection system according to claim 3 ,
The server selects one operation data collection device based on the communication connection time ratio calculated by the communication establishment ratio calculation unit, and relays another operation data storage unit of the selected operation data collection device. A work machine operation data collection system characterized by collecting work machine operation data. In the work machine operation data collection system according to claim 4 ,
The server stores an operation data storage of an operation data collection device of another other work machine for an operation data collection device in which the communication connection time ratio calculated by the communication establishment ratio calculation unit is less than a predetermined ratio. An operation data collection system for work machines, characterized in that the operation data of the self-work machine is collected by relaying parts. In the work machine operation data collection system according to claim 4 ,
In the case where the communication connection time ratio calculated by the communication establishment ratio calculation unit is approximately the same, the server performs one operation based on a machine attribute or a moving speed of the work machine on which the operation data collection device is mounted. A data collection device is selected and the operation data storage unit of the operation data collection device mounted on the selected work machine with less movement is relayed to collect operation data of another work machine. Operational data collection system.

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