Patent Application
20210248537
The present invention relates to a technique for evaluating a skill level of an operator who remotely operates a construction machine.
In recent years, with the aging of operators of construction machines, the shortage of operators has become serious, and it is becoming difficult for a work orderer to secure operators. Therefore, expectations are growing for a remote operation system with which an operator operates a construction machine remotely without going to a work site.
With the remote operation system, operators can be recruited not only from all domestic regions but also from other countries, making it easy for the work orderer to secure operators. In addition, with the remote operation system, it is unnecessary for the operator to go to the work site, enabling a flexible way of work by changing the work site according to a time zone, such as working at one work site in one time zone, and working at another work site in the next time zone.
In this way, the remote operation system has an advantage for the work orderer that selections for operators are widened. However, conventionally, a skill of an operator has not been evaluated objectively. Therefore, there is a problem that the work orderer does not know to which operator to order work from among a large number of operators.
In particular, when ordering new work to an operator who is not acquainted at all, the work orderer has no other choice but to select the operator depending on intuition if the skill of the operator is unknown. In this case, the work orderer hesitates to order work to the new operator because of anxiety that it is unclear whether the selected operator will work as expected. However, this does not take full advantage of the remote operation system that provides wider selections for the operator, and the labor market of the remote operation system cannot be revitalized.
Patent Literature 1 merely discloses a construction volume management system that calculates productivity in each of a plurality of work groups when civil engineering work is performed by the work groups based on machine information, personnel information, work time, and construction work output in each work group. Therefore, the above problems cannot be solved.
Patent Literature 1: JP 2002-108975 A
An object of the present invention is to provide a skill evaluation system or the like that can present an objective evaluation indicator of a skill of an operator who remotely operates a construction machine.
The skill evaluation system according to one aspect of the present invention includes: a remote operation device configured to allow an operator to remotely operate a construction machine; and a server communicatively connected to the remote operation device. The server includes: an acquisition unit configured to acquire an operation record of the remote operation device by the operator, and a test result of a predetermined test for ensuring that a skill level of the operator for the remote operation is equal to or higher than a certain level; a work history database configured to store the operation record and the test result as a work history; a skill level calculation unit configured to calculate the skill level of the operator for the remote operation based on the work history stored in the work history database; and a presentation unit configured to present the skill level.
The present invention makes it possible to present an objective evaluation indicator of an operator's skill.
The master 30 is one example of a remote operation device that remotely operates a construction machine 50. In the present embodiment, the master 30 includes an operation device simulating a cab of the construction machine 50. An operation lever similar to an operation lever of the construction machine 50 is disposed at a position similar to a position in the construction machine 50. In addition, the master 30 includes a seat on which the operator is seated, a display unit 303 disposed forward of the seat and displaying a surrounding image of the construction machine 50, and the like. The operator operates the operation lever to remotely operate the construction machine 50 while looking at the surrounding image displayed on the display unit 303.
A slave 40 is a slave operation device that is disposed in the cab of the construction machine 50 and directly operates the operation lever provided in the cab of the construction machine 50 based on an operation amount received by the master 30. The slave 40 is, so to speak, a machine that operates the construction machine 50 as an operator's dummy. The construction machine 50 is a construction machine to be remotely operated, such as a hydraulic excavator and a hydraulic crane.
The server 10, the orderer terminal 200, the master 30, and the slave 40 are connected via a network NT1 to allow communication with each other. As the network NT1, a long distance communication network including the Internet, a mobile phone communication network, and the like can be employed.
The master 30 and the slave 40 are connected via a communication path NT2 to allow communication with each other. As the communication path NT2, a communication path is employed that allows wireless communication between the master 30 and the slave 40 at a distance of several tens to several hundreds of meters, such as specific power-saving radio and Bluetooth (registered trademark). However, this is one example, and the master 30 and the slave 40 may be connected via the network NT1. In this case, the master 30 and the slave 40 can perform long-distance communication. Alternatively, wired communication may be employed as the communication path NT2.
The master 30 includes a mode changeover unit 301, a mode execution unit 302, the display unit 303, an operation unit 304, and a communication unit 305.
The mode changeover unit 301 includes, for example, a physical changeover switch or a changeover switch configured as a GUI displayed on the display unit 303. The mode changeover unit 301 receives a changeover instruction by the operator to make a changeover among an actual work mode, a simulation mode, and a test mode. The actual work mode is a mode in which the operator actually operates the construction machine 50 remotely. The simulation mode is a mode in which the operator executes a simulator for training a remote operation. The test mode is a mode for executing a predetermined test for ensuring that the skill level of the operator for the remote operation is equal to or higher than a certain level.
The mode execution unit 302 includes, for example, a processor such as a CPU, and executes the mode received by the mode changeover unit 301.
When executing the actual work mode, the mode execution unit 302 requests the operator to input an access code, performs authentication processing using the input access code, and then permits the remote operation by the operator when the authentication is permitted. On the other hand, when the authentication is not permitted, the remote operation by the operator is not permitted. Here, the master 30 and the slave 40 each store the access code in a memory (not shown). When the input access code agrees with the access code stored in the memory, the mode execution unit 302 transmits the access code to the slave 40 via the communication unit 305. When the transmitted access code agrees with the access code stored in the memory, the slave 40 transmits a permission response to the master 30. When the permission response is received by the communication unit 305, the mode execution unit 302 causes the communication unit 305 to establish a communication connection with the slave 40. After this, every time the operator inputs an operation into the operation unit 304, the mode execution unit 302 transmits the input operation amount to the slave 40 via the communication unit 305 to operate the slave 40. This allows the operator to operate the master 30 and remotely operate the construction machine 50.
When the actual work ends, the mode execution unit 302 transmits an actual work record that associates work contents, work time, and specifications of the construction machine 50 used for the actual work as the work history to the server 10 via the communication unit 305. Here, the server 10 stores work schedule information for managing which operator remotely operates which construction machine 50 at which work site in which time zone. Therefore, the mode execution unit 302 may identify the work content of the actual work, for example, by transmitting an inquiry notification of the work content to the server 10 via the communication unit 305 by designating the time zone and an operator ID, and receiving the work content from the server 10.
The work content such as digging, loading, and leveling of level ground performed by the construction machine 50 is repeated in a certain operation pattern, making it possible to identify the work content from the operation pattern for the operation unit 304. Therefore, the mode execution unit 302 may identify the work content from the operation pattern input by the operation unit 304. Also, the mode execution unit 302 may identify the work time from the execution time of the actual work mode.
When executing the simulation mode, the mode execution unit 302 activates a simulator including a computer program. Here, the simulator is executed by the operator, for example, for the purpose of improving the skill level of the remote operation.
The simulator constructs a virtual site environment including a three-dimensional model simulating the actual work site in computer space, and disposes a construction machine model simulating the actual construction machine in the virtual site environment. Then, the simulator generates an image of the virtual site environment the operator can see through the cab when the operator is seated in the cab of the construction machine model, and displays the image on the display unit 303 of the master 30. Here, when the operator operates the operation unit 304 of the master 30, the simulator changes the posture of an attachment, a tip attachment, and the upper slewing body of the construction machine model in accordance with the operation, and also changes the image of the virtual site environment in response to the change. Also, the simulator implements the work content such as digging and loading in response to the operation of the operation lever by the operator in the virtual site environment, in a similar manner to the actual work site.
The simulator, when activated, causes the operator to select the specification and the work content of the construction machine 50, causes the operator to implement the selected work content in the virtual site environment by using the construction machine model of the selected specification, thereby training the operator. When the training by the simulator ends, the mode execution unit 302 transmits a simulation record associated with the work content, the work time of the simulator, and the specification of the construction machine 50 used by the simulator as the work history to the server 10 via a communication unit 11.
When executing the test mode, the mode execution unit 302 starts the test by activating a test application including a computer program. Here, the test is, for example, a test provided by a provider of the skill evaluation system. The test is implemented, for example, by causing the operator to operate the actual construction machine 50 disposed at an actual training site by using the master 30.
For example, when the operator operates the master 30 to activate the test application, and inputs a test request to carry out the test regarding the desired work content by using the construction machine 50 of the desired specification, the test request is transmitted to the server 10. The server 10 that has received the test request causes the slave 40 mounted on the construction machine 50 of the specification desired by the operator at the training site to have communication connection with the master 30, and puts the predetermined construction machine 50 into a state remotely controllable by the master 30, and then starts the test. Pass or fail of this test is determined, for example, by an examiner remotely or directly visually observing the work actually performed by a remote operation at the training site. Then, when pass or fail is determined by the examiner, the pass or fail result is transmitted from an examiner terminal to the master 30. When the communication unit 305 receives the pass or fail result of the test, the mode execution unit 302 transmits the test result that associates the received pass or fail result, the work content, and the specification of the construction machine 50 used in the test as the work history to the server 10 via the communication unit 305.
The display unit 303 includes a display device such as a liquid crystal display, and displays the surrounding image of the construction machine 50. The operation unit 304 includes an operation lever similar to the operation lever provided in the cab of the construction machine 50. Specifically, the operation unit 304 includes one or more operation levers that can tilt in the front-rear direction and/or the left-right direction. When the operator tilts a certain operation lever, the operation amount according to the tilt amount is transmitted to the slave 40 via the communication path NT2. The slave 40 tilts the operation lever of the construction machine 50 corresponding to the operation lever tilted by the operator according to the operation amount.
The communication unit 305 includes a communication device for connecting the master 30 to the network NT1 and the communication path NT2.
Reference is returned to
The communication unit 11 includes, for example, a communication device that connects the server 10 to the network NT1, and receives the work history (actual work record, simulation record, and test result) from the master 30.
When an inquiry request for inquiring the skill level of one operator is transmitted from the orderer terminal 200, the presentation unit 12 reads the skill level of the operator concerned from the operator database 16 and transmits the skill level to the orderer terminal 200 via the communication unit 11. When the skill level is calculated by the skill level calculation unit 13 based on the work history transmitted from the master 30, the presentation unit 12 transmits the skill level to the master 30 via the communication unit 11.
When the communication unit 11 receives the work history from the master 30, the database management unit 15 stores the work history in either of the work record database 17, the simulator record database 18, and the test record database 19. The work record database 17, the simulator record database 18, and the test record database 19 are one example of the work history database.
Here, when the received work history is the actual work record (one example of operation record), the database management unit 15 stores the work history in the work record database 17. When the received work history is the simulation record (one example of operation record), the database management unit 15 stores the work history in the simulator record database 18. When the received work history is the test result, the database management unit 15 stores the test result in the test record database 19.
The work record database 17 has columns of “work content”, “base addition point”, “work time”, and “evaluation point”.
In the “work content” column, work contents with work records for the operator concerned are registered. Here, five work contents are registered: “digging and loading”, “leveling of level ground”, “shaping of level ground”, “leveling of slope face”, and “shaping of slope face”.
“Digging and loading” is a work content for digging soil, ground, and rock and loading on a dump truck. “Leveling of level ground” is a work content for leveling the level ground shaped by “shaping of level ground”. “Shaping of level ground” is a work content for removing irregularities on the ground to create a flat ground. “Leveling of slope face” is a work content for leveling the slope face shaped by “shaping of slope face”. “Shaping of slope face” is a work content for shaping the slope face, which is an artificial slope created by cutting or embankment. Note that the work contents listed in
The “base addition point” is a predetermined coefficient by which the work time input into the “work time” column is multiplied. Here, the value of base addition point is set such that as the work content becomes more difficult, the base addition point becomes higher.
“Work time” is a cumulative value of the work time for each work content in which the operator has actually operated the construction machine 50 remotely. The work time is registered in a record concerned by the database management unit 15 every time the actual work record is transmitted from the master 30. For example, if the master 30 transmits the actual work record in which two-hour work time is associated with “digging and loading”, two hours will be added to the “digging and loading” work time.
“Evaluation point” is a numerical value represented by the product of the base addition point and work time in each work content. Since the skill level becomes higher as the evaluation point becomes higher, the work orderer orders a lot of work to the operator.
Here, the work record database 17 is present for each specification of the construction machine 50 configured by a combination of “model range”, “ATT type”, and “tip ATT”. The example of
For example, if one operator has a work record of a combination of “3t to 5t”, “standard”, and “bucket” for the machine range, ATT type, and tip ATT type, and has a work record of another combination of “3t to 5t”, “long range”, and “bucket”, respectively, two work record databases 17 are present corresponding to these two combinations.
Note that in
Note that in a similar manner to the work record database 17, one database is created for each specification of the construction machine 50 in the simulator record database 18. The example of
The test record database 19 has columns of “test content”, “base addition point”, “pass or fail result”, and “evaluation point”. In the “test content” column, the work content for which the test is performed is registered. Here, since the operator concerned has taken the test for three work contents of “digging and loading”, “shaping of level ground”, and “shaping of slope face”, these three work contents are registered in the “test content” column. In the “pass or fail result” column, the pass or fail result for the test is registered. When passed, “1” is registered, and when failed, “0” is registered. The “base addition point” and the “evaluation point” are the same as described in
Reference is returned to
Next, an example of calculating the skill level will be described. Regarding the specification “model range: 3t to 5t, ATT type: standard, tip ATT type: bucket” and the work content “digging and loading”, in the work record database 17 shown in
In this way, the skill level calculation unit 13 calculates the skill level of each operator for each specification and work content, and registers the skill level in the skill level table T2.
In detail, the operator table T1 has columns of “operator ID”, “name”, “nationality”, and “communication address”. The “operator ID” is an identifier for uniquely identifying each entered operator. The “name” indicates the name of the operator. The “nationality” indicates the nationality in which the operator lives, such as Japan or Germany. The “communication address” indicates a communication address of the master 30 used by the operator.
The skill level table T2 is a database created for each entered operator and each specification. The example of
The skill level table T2 has columns of “work content” and “skill level”. In the example of
Reference is returned to
Meanwhile, this operator, who has the skill level of “D” for leveling of level ground, cannot use the actual work mode for leveling of level ground.
Specifically, when one operator is permitted to use the actual work mode, the prohibition unit 14 sets a permission flag of the operator stored in the memory of the master 30 at 1. For example, it is assumed that one operator is permitted to use the actual work mode for the specification “model range: 3t to 5t, ATT type: standard, tip ATT type: bucket” and the work content “digging and loading”. In this case, the prohibition unit 14 sets the permission flag stored in the memory of the master 30 of the operator concerned from “0” to “1”, the permission flag for the specification “model range: 3t-5t, ATT type: standard, tip ATT type: bucket” and the work content “digging and loading”. In this case, when the operator selects the actual work mode in the master 30 and requests execution of the actual work for this specification and this work content, the mode execution unit 302 of the master 30 permits this request. Meanwhile, the setting flag for the specification and the work content for which the operator concerned is not peimitted is set at “0”. In this case, when the operator selects the actual work mode in the master 30 and requests execution of the actual work for the specification and the work content for which the permission flag is 0, the mode execution unit 302 rejects the request.
This makes it possible to give the operator a motivation to improve the skill level by gaining a lot of experience with the simulator or to pass the test and improve the skill level to receive many orders and increase the reward.
The orderer terminal 200 includes a computer such as a personal computer possessed by the work orderer who orders work to the operator. Here, the work orderer is a person who plans work such as construction work and places an order with the operator, and is, for example, an employee who belongs to a work ordering company. The operator may be an employee employed by a work contracting company or a private manager who is not directly employed by a work contracting company.
The orderer terminal 200 includes a display unit 201, a control unit 202, an operation unit 203, and a communication unit 204. The display unit 201 includes, for example, a liquid crystal display. The control unit 202 includes, for example, a processor such as a CPU, and manages the overall control of the orderer terminal 200. In the present embodiment, on receipt of an input instruction of the inquiry request that is input by the work orderer to check the skill level of the operator, the control unit 202 transmits the inquiry request including the operator ID of the operator concerned to the server 10 via the communication unit 204.
The operation unit 203 is, for example, a keyboard and a mouse, and receives the input instruction of the inquiry request for checking the skill level. The communication unit 204 includes a communication device that connects the orderer terminal 200 to the network NT1, and transmits the inquiry request received by the operation unit 203 to the server 10 via the network NT1.
One example of interaction between the work orderer and the operator will be shown below. To begin with, when the work orderer inputs the work schedule information including the work content, the work time, and the specification of the construction machine 50 used for the work, the orderer teiininal 200 transmits the work schedule information to the server 10. From details of the work schedule information, the server 10 transmits an operator list obtained by picking up operator candidates to the orderer terminal 200. The operator list includes a button for the work orderer to view the work level. When the work orderer selects this viewing button, the orderer terminal 200 transmits the inquiry request described above to the server 10. The server 10 reads the skill level of the operator concerned from the operator database 16 and transmits the skill level to the orderer terminal 200. This allows the work orderer to determine the skill level of the operator attracting interest from among operators listed in the operator list. In this way, the work orderer determines the operator whom the work orderer finally requests to perform the work while checking the skill levels of the operators listed in the operator list. The orderer terminal 200 transmits, to the server 10, an order request to the operator determined by the work orderer.
The server 10 notifies the operator concerned that the order request has been made. When the operator accepts the order request, the server 10 considers that a contract is concluded between the operator and the work orderer, issues the access code to the master 30, and transmits the access code to the master 30 of the operator concerned. This allows the operator to operate the master 30 and execute the work ordered from the work orderer.
Note that in the description here, the work orderer is notified of the skill level of the operator with the selection of the detail button displayed in the operator list serving as a trigger, but this is one example. For example, the operator list may display the skill level of each operator in advance.
As a mode in which the server 10 picks up the operator when the work schedule information is received, for example, it is possible to employ a mode of picking up an operator whose skill level for the specification and work content included in the work schedule information is equal to or higher than a reference skill level.
In S201, in the master 30, when the mode execution unit 302 detects that one of the actual work mode, the simulation mode, and the test mode has ended, the communication unit 305 transmits, to the server 10, the work history that associates the specification of the construction machine 50, the work content, and the work time or test result in the detected mode.
In S101, the communication unit 204 of the server 10 receives the work history. In S102, in the server 10, the database management unit 15 stores the work history received by the communication unit 204 in either one of the work record database 17, the simulator record database 18, and the test record database 19.
In S103, the skill level calculation unit 13 calculates the skill level by using details of the updated database. In S104, the calculated skill level is stored in the operator database 16. In S105, the communication unit 11 transmits the calculated skill level to the master 30.
In S202, the communication unit 305 of the master 30 receives the skill level. In S203, the display unit 303 of the master 30 displays the skill level. This allows the operator to check how much the skill level of the operator has improved.
In S401, the communication unit 11 of the server 10 receives the inquiry request. In S402, the presentation unit 12 of the server 10 reads the skill level of the operator concerned from the operator database 16. In S403, the communication unit 11 of the server 10 transmits the skill level to the orderer terminal 200. In S302, the communication unit 204 of the orderer terminal 200 receives the skill level. In S303, the display unit 201 of the orderer terminal 200 displays the skill level. This allows the work orderer to order the work to the operator who attracts interest after checking the skill level of the operator.
In this way, according to the present embodiment, the actual work record in the actual work mode, the simulation record in the simulation mode, and the test result in the test mode are stored in the database, and the skill level of the operator is calculated based on the work history. Therefore, an objective evaluation indicator about the remote operation of the operator can be presented. As a result, a selection material for selecting the operator can be presented to the work orderer. This allows the work orderer to select a new operator without anxiety, and to revitalize the labor market of the remote operation system.
The operator can improve the skill level by not only the actual work but also having training with the simulator or taking the test. This makes it possible to give the operator a motivation to improve the skill level by taking the simulator and the test using free time of the actual work, and to improve the overall skill level of the operator.
Since the master 30 is configured to allow a changeover among the actual work mode, the simulation mode, and the test mode, the operator can easily perform the simulation and the test.
The present invention can employ the following modifications.
(1) In the above embodiment, the skill level of the operator increases as the work time increases in the actual work mode and the simulation mode, but the present invention is not limited thereto. For example, the skill level of the operator may be calculated in consideration of the work quality in the actual work mode and the simulation mode.
For example, a questionnaire may be issued to the work orderer after finishing the actual work, the evaluation point of the operator may be calculated from the questionnaire result, and the skill level may be calculated based on the evaluation point. As the questionnaire, a mode of causing the work orderer to grade the operator can be employed, for example, 5 points if very satisfied with the operator's work, 4 points if satisfied, 3 points if neutral, 2 points if not satisfied, and 1 point if not satisfied at all. Then, the grading result of this questionnaire may be employed as the evaluation point.
In the simulation mode, a method of determining the skill level may be employed in which similarity indicating how close the motion locus of the construction machine 50 of the operator is to the model locus is calculated, and as the similarity is increased, the evaluation point is increased. This method of calculating the similarity may be used in calculating the evaluation point of the actual work.
(2) In the above embodiment, the skill level of the operator is calculated for each specification and work content, but the present invention is not limited thereto. For example, the skill level calculation unit 13 may calculate the work level by summing, for each specification, the evaluation point calculated for each work content to calculate the total value for each specification, and ranking the calculated total value according to the rank determination table T3.
Alternatively, the skill level calculation unit 13 may calculate the work level by calculating the total value of the evaluation points of all the specifications and all the work contents and ranking the calculated total value according to the rank determination table T3.
(3) The above embodiment has described that operators whose skill level is equal to or higher than the reference skill level are included in the operator list and presented to the work orderer. However, the present invention is not limited thereto. For example, the server 10 may calculate a required skill level according to the work schedule information created by the work orderer, and may include the operator having the skill level equal to or higher than the required skill level in the operator list. For example, if the work schedule information includes five hours as the work time for digging and loading, the server 10 determines which of the ranks of the predetermined required skill level the five hours correspond to. Here, for example, if the rank of the required skill level is A, the server 10 may extract the operator whose skill level is A or higher from among the entered operators and include the operator in the operator list.
(4) The rank determination table T3 shown in
(5) The above embodiment has described one example of operation record including the actual work record and the simulation record. However, the present invention is not limited thereto, and the operation record may include at least one of the actual work record and the simulation record. Here, if only the actual work record is employed as the operation record, the simulator record database 18 may be omitted from the server 10. If only the simulation record is employed as the operation record, the work record database 17 may be omitted from the server 10.
(6) The above embodiment has described that in the simulation mode, the operator operates the construction machine model disposed in computer space. However, the present invention is not limited thereto, and the operator may operate the actual construction machine 50.
(7) The above embodiment has described that in the test mode, the operator takes the test by operating the actual construction machine 50, but the present invention is not limited thereto. For example, in the test mode, the test may be performed by operating a construction machine model disposed in computer space. In this case, a pass or fail result of the test may be determined by the simulator. This allows employment of a mode in which the operator desires the actual work on condition that the skill level on the simulation is equal to or higher than a certain level. Note that if the mode of performing the test in the simulator is employed, the pass or fail result of the test may be stored in the simulator record database 18 or in the test record database 19.
(8) The above embodiment has described that the mode execution unit 302 of the master 30 can execute all of the actual work mode, the simulation mode, and the test mode. However, the present invention is not limited thereto. For example, the mode execution unit 302 may be able to execute at least one of the three modes. For example, the following use case can be assumed. That is, in one office, a master 30_A including the mode execution unit 302 that cannot execute the simulation mode but can execute the actual work mode and the test mode is installed. In another office, a master 30_B including the mode execution unit 302 that can execute only the simulation mode is installed.
In this case, the master 30_A transmits the actual work record of the actual work performed by one operator to the server 10 in association with the operator TD, and transmits the test result performed by this operator to the server 10 in association with the operator ID. Meanwhile, the master 30_B transmits the simulation record of the simulation performed by the operator to the server 10. Then, the server 10 stores the actual work record transmitted from the master 30_A in the work record database 17 of the operator concerned, and stores the test result transmitted from the master 30_A in the test record database 19 of the operator concerned. Meanwhile, the server 10 stores the simulator record transmitted from the master 30_B in the simulator record database 18 of the operator concerned.
In this use case, even if the operator executes various modes in an arbitrary master 30 instead of the specific master 30, the record of the executed mode will be stored in the server 10, and this will be a convenient system for the operator. Note that when employing this use case, each master 30 is required at least to perform user authentication on the operator before executing various modes by the operator.
(9) The above embodiment has described that the server 10 acquires the work history of the operator from the master 30 via the network NT1, but the present invention is not limited thereto. For example, the work history of the operator in the master 30 is stored in a recording medium such as a USB memory. Then, the server 10 may acquire the work history of the operator through this recording medium. In this case, the server 10 may acquire the work history recorded in the recording medium via a computer connected to some network NT1, or by connecting the recording medium to a memory interface of the server 10.
When the work of the operator in various modes is finished, the master 30 may display a symbol string indicating the record of the finished work (for example, a list of alphanumeric characters). Then, if the operator manually inputs this symbol string in a computer connected via the network NT1 (for example, a mobile terminal such as a smartphone) or an input device of the server 10, the records of various modes may be registered in the server 10. The symbol string indicating the record used in this case may be a QR code (registered trademark). In this case, the operator may capture the QR code (registered trademark), for example, with a mobile terminal such as a smartphone and transmit the QR code to the server 10, whereby the work record may be registered in the server 10.
(10) The above embodiment has described that the mode changeover unit 301 can select either one of three modes of the actual work mode, the simulation mode, and the test mode, which is one example. For example, if the mode execution unit 302 of the master 30 is configured, for example, to execute two of these three modes, the mode changeover unit 301 may be configured to allow a changeover in either one of these two modes. If the mode execution unit 302 can execute only one mode, the mode changeover unit 301 is unnecessary.
A skill evaluation system according to one aspect of the present invention includes: a remote operation device configured to allow an operator to remotely operate a construction machine; and a server communicatively connected to the remote operation device. The server includes: an acquisition unit configured to acquire an operation record of the remote operation device by the operator, and a test result of a predetermined test for ensuring that a skill level of the operator for the remote operation is equal to or higher than a certain level; a work history database configured to store the operation record and the test result as a work history; a skill level calculation unit configured to calculate the skill level of the operator for the remote operation based on the work history stored in the work history database; and a presentation unit configured to present the skill level.
With this configuration, the operation record of the remote operation device and the test result of the predetermined test are stored in the work history database as the work history, and the skill level of the operator is calculated based on this work history. Therefore, an objective evaluation indicator about the remote operation of the operator can be presented. As a result, a selection material for selecting the operator can be presented to the work orderer. This allows the work orderer to select a new operator without anxiety, and to revitalize the labor market of the remote operation system.
In the above aspect, the operation record preferably includes at least one of an actual work record obtained by actually executing the remote operation of the construction machine and a simulation record obtained by executing simulation of the remote operation.
With this configuration, the operator can improve the skill level by not only the actual work but also having training with the simulator. This makes it possible to give the operator a motivation to have training with the simulator by using free time of the actual work and improve the skill level, and to improve the overall skill level of the operator.
In the above aspect, the test result is preferably a result of a predetermined test for ensuring that the skill level of the operator for at least one of the remote operation when actually executing the remote operation of the construction machine, and a remote operation on the simulation when executing the simulation of the remote operation is equal to or higher than a certain level.
With this configuration, the operator can improve the skill level by passing the test. This makes it possible to give the operator a motivation to improve the skill level by taking the test using free time of the actual work, and to improve the overall skill level of the operator.
In the above aspect, preferably, the remote operation device further includes a mode execution unit that executes at least one mode of an actual work mode of actually executing the remote operation of the construction machine, a simulation mode of executing the simulation of the remote operation, and a test mode of executing the predetermined test for ensuring that the skill level of the operator for the remote operation is equal to or higher than a certain level.
With this configuration, the operator can execute at least one mode of the actual work mode, the simulation mode, and the test mode in the remote operation device.
In the above aspect, preferably, the remote operation device further includes a mode changeover unit configured to receive a changeover instruction by the operator to make a changeover between at least two of the modes, and the mode execution unit executes the mode received by the mode changeover unit.
With this configuration, the operator can easily make a changeover between at least two modes among the actual work mode, the simulation mode, and the test mode in the remote operation device.
In the above aspect, preferably, the operation record includes a first work time in the actual work mode and a second work time in the simulation mode, the work history database stores a cumulative value of the first work time and a cumulative value of the second work time, and the skill level calculation unit calculates the skill level of the operator for the remote operation to be higher as the cumulative value of the first work time and the cumulative value of the second work time stored in the work history database increase.
With this configuration, a mechanism to increase the skill level as the work time in the actual work and the work time in the simulator increase can be constructed.
In the above aspect, preferably, the test result is a pass or fail result of the test executed in the test mode, and when the test result indicates a pass, the skill level calculation unit calculates the skill level higher than when the test result indicates a failure.
With this configuration, since passing the test can increase the skill level, it is possible to give the operator a motivation to take the test by using free time of the actual work.
In the above aspect, preferably, the remote operation includes a plurality of work contents, the mode execution unit executes the actual work mode, the simulation mode, and the test mode for each of the work contents, the work history database stores each of the cumulative value of the first work time in the actual work mode, the cumulative value of the second work time in the simulation mode, and the pass or fail result of the test executed in the test mode in association with each of the executed work contents, and the skill level calculation unit calculates the skill level for each of the work contents.
With this configuration, since the skill level is calculated for each work content, the work orderer can easily select the operator having the skill level suitable for the work content.
In the above aspect, preferably, the actual work mode, the simulation mode, and the test mode are each executable by the construction machine having a different specification, the work history database stores each of the cumulative value of the first work time in the actual work mode, the cumulative value of the second work time in the simulation mode, and the pass or fail result of the test executed in the test mode in association with the executed specification, and the skill level calculation unit calculates the skill level corresponding to the specification.
With this configuration, since the skill level corresponding to the specification is calculated, the work orderer can easily select the operator having the skill level suitable for the specification of the construction machine to be used in the work to order.
In the above aspect, preferably, the server further includes a prohibition unit configured to prohibit the operator from executing the actual work mode of actually executing the remote operation of the construction machine when the skill level is less than a reference level.
With this configuration, since the operator cannot execute the actual work unless the skill level exceeds the reference level, it is possible to give the operator a motivation to gain a lot of experience with the simulator or to pass the test.
In the above aspect, preferably, the acquisition unit acquires an inquiry request of the operator from an orderer terminal possessed by a work orderer who orders the work of the remote operation to the operator, and when the acquisition unit acquires the inquiry request, the presentation unit notifies the orderer terminal of the skill level of the operator.
With this configuration, the work orderer can determine the skill level of the operator by transmitting the inquiry request to the server.
The present invention may be the server that constitutes the skill evaluation system described above, a skill evaluation method that executes functions of the server, or a skill evaluation program for causing a computer to execute the skill evaluation method. The present invention may be a non-transitory computer-readable recording medium recording the skill evaluation program.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2018-102756 | May 2018 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2019/019520 | 5/16/2019 | WO | 00 |
