JP2023001479A - Work machine information collecting system - Google Patents

Abstract

To reduce communication traffic in relation to information collection at the time of work machine diagnosis.SOLUTION: Provided is a work machine information collecting system in which a work machine that has an operating part and a server are communicably connected to each other. The work machine includes: an operation data output part that outputs operation data according to the operation state of the operation part; a determination part that determines whether or not the operation data conforms to determination conditions for determining whether or not the operation data output by the operation data output part is to be transmitted to the server; and a first communication part that transmits the operation data to the server when the determination part determines that the operation data conforms to determination conditions.SELECTED DRAWING: Figure 2

Description

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

2. Description of the Related Art Conventionally, there has been proposed a failure diagnosis system in which a work machine and a server are communicatively connected in order to diagnose a failure of a work machine such as a backhoe (see, for example, Patent Literature 1). In such a system, the server fetches operation data from the working machine and diagnoses failures based on the fetched operation data.

JP 2014-25343 A

In the system of Patent Literature 1, when a large amount of data is transmitted from the work machine side to the server, communication traffic increases, and a load is placed on the communication device of the work machine.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce communication traffic associated with collecting information when diagnosing a working machine.

The technical means of the present invention for solving this technical problem are characterized by the following points.

A work machine information collection system is a work machine information collection system in which a work machine having an operating unit and a server are communicably connected, wherein the work machine collects operation data according to the operating state of the operation unit. and determining whether or not the operation data conforms to a determination condition for determining whether or not the operation data output by the operation data output unit is to be transmitted to the server. and a first communication unit configured to transmit the operation data to the server when the determination unit determines that the operation data satisfies a determination condition.

The server includes a collection determination unit that determines collection data to be collected for diagnosis of the working machine based on the operation data transmitted from the communication unit, and transmission of the collection data determined by the collection determination unit. a second communication unit that transmits a request signal to the work machine, and the first communication unit transmits collected data corresponding to the request signal to the server when receiving the request signal.

The server includes a diagnostic section that diagnoses the state of the operating section based on the collected data.

In the work machine, a first judgment unit for judging whether or not the operation data conforms to a first judgment condition for judging whether or not to issue a warning; a warning unit that issues a warning when it is determined that the A first threshold for determining the state of the included signal is included, and the second determination condition is a second threshold higher than the first threshold for determining the state of the signal included in the operation data. contains.

In the work machine, a first judgment unit for judging whether or not the operation data conforms to a first judgment condition for judging whether or not to issue a warning; a warning unit that issues a warning when it is determined that the A first threshold for determining the state of the included signal is included, and the second determination condition is a second threshold lower than the first threshold for determining the state of the signal included in the operation data. contains.

According to the present invention, it is possible to reduce communication traffic associated with information collection when diagnosing a working machine.

1 shows an overall view of a work machine information collection system. 1 shows a block diagram of a work machine information collection system. FIG. FIG. 5 is an explanatory diagram showing an example of threshold determination; FIG. 5 is an explanatory diagram showing an example of threshold determination; It is a figure which shows an example of the database for diagnosis. It is a figure which shows an example of collection data, a judgment value, and a diagnosis result. 4 is a flowchart for explaining a characteristic processing operation of this embodiment (part 1); 2 is a flowchart for explaining a characteristic processing operation of this embodiment (part 2); 3 is a flowchart for explaining a characteristic processing operation of this embodiment (part 3); 1 is a block diagram showing the configuration of a work machine; FIG. 1 shows an overall side view of a working machine; FIG.

Hereinafter, a work machine information collection system according to an embodiment of the present invention will be described with reference to the drawings.

This system is used, for example, for diagnosing failures in a backhoe working machine. First, the present system will be described together with the configuration of the working machine.

FIG. 11 shows an example of a working machine. As shown in FIG. 11, a work machine (backhoe) 1 includes a lower travel device 2 and an upper revolving body 3 . The traveling device 2 includes a pair of left and right traveling bodies 4 having rubber belts, and a crawler type traveling device in which both the traveling bodies 4 are driven by a traveling motor M is adopted. A dozer 5 is provided in front of the travel device 2 .

The revolving structure 3 includes a revolving base 12 supported on the travel device 2 via a revolving bearing 11 so as to be capable of turning left and right around a vertical revolving axis, and a working device 13 ( drilling equipment). An engine, a radiator, a driver's seat 9, a fuel tank, a hydraulic oil tank, and the like are provided on the swivel base 12 . A display device 25 is provided around the driver's seat 9 to display various information about the work machine 1 . The driver's seat 9 is surrounded by a cabin 14 provided on the swivel base 12 .

The working device 13 includes a swing bracket 17 which is supported by a support bracket 16 which is provided in the front portion of the swivel base 12 so as to be slightly offset to the right of the central portion in the horizontal direction so as to be capable of laterally swinging around the vertical axis. , a boom 18 whose base side is pivotally attached to the swing bracket 17 so as to be rotatable about a lateral axis and supported so as to be vertically swingable; It has an arm 19 that is rotatably pivoted and supported so that it can swing back and forth, and a bucket 20 that is provided on the tip side of the arm 19 so as to be capable of scooping and dumping.

The swing bracket 17 is swung by extension and contraction of a swing cylinder provided in the swivel base 12 , and the boom 18 is swung by extension and contraction of a boom cylinder 22 interposed between the boom 18 and the swing bracket 17 . , the arm 19 is swung by extension and contraction of an arm cylinder 23 interposed between the arm 19 and the boom 18, and the bucket 20 is oscillated by a bucket cylinder 21 interposed between the bucket 20 and the arm 19. Squeeze and dump are operated by the expansion and contraction of the

FIG. 10 is a block diagram showing the configuration of the working machine. As shown in FIG. 10 , work machine 1 includes a control device 100 . The control device 100 performs various controls of the working machine. The control device 100 operates hydraulic actuators such as the bucket cylinder 21, the boom cylinder 22, and the arm cylinder 23 by outputting a control signal to a control valve 90, for example, a three-position switching electromagnetic valve, thereby switching the control valve 90. , to actuate the hydraulic actuator. Further, the control device 100 outputs a control signal to the work light 91 to perform lighting control such as turning on, blinking, and extinguishing the work light 91 .

A plurality of sensors 101 to 106 are connected to the control device 100 . The sensor 101 measures the pressure of hydraulic fluid discharged from the hydraulic pump P1, that is, the output of the hydraulic pump P1. Sensor 102 measures the output of prime mover 92 , that is, the number of revolutions of prime mover 92 . A sensor 103 measures the temperature of hydraulic oil (oil temperature). A sensor 104 measures the amount of lubricating oil in bearings, gears, and the like. A sensor 105 is provided in the vicinity of the bearing or in a housing or the like that supports the bearing to measure the acceleration or the like of the bearing. The sensor 106 measures the voltage of a storage battery such as a battery, that is, the storage capacity.

FIG. 1 shows an overall view of a work machine information collection system. As shown in FIG. 1 , the work machine information collection system includes a data collection device 30 and a server 40 .

The data collection device 30 is mounted on the work machine 1 , collects operation data when the working part of the work machine 1 operates, and transmits the collected operation data to the server 40 or transmits the collected operation data to the server 40 . receive incoming data. Here, the work machine 1 is equipped with various devices and the like. The working parts are, for example, the work light 91, the hydraulic pump P1, the prime mover 92, the bearings, the hydraulic actuator, the control valve 90, the battery, and the like. In addition, the above-described operating unit is an example, and is not limited. Specifically, the operation data corresponding to the operating state of the operating section is data indicating the physical quantity of the operating section. The data includes, for example, a value indicating vibration generated in the moving part, a value indicating sound emitted by the moving part, a current value flowing through a predetermined portion of the moving part, a voltage, and the like.

Data other than data indicating physical quantities are also operating data. For example, data indicating the temperature of the hydraulic oil, the cumulative operating time (hour meter) of the work implement 1, and the water temperature are also operating data. The operation data may also include sales management data such as the sales company that sold the work machine, the name of the customer who owns the work machine, the customer's contact information, whether or not there is a maintenance contract, and the person in charge. The data collection device 30 transmits operation data to be collected, that is, collected data to the server 40 in response to a request from the server 40 side.

The server 40 stores various data related to maintenance and inspection of the working machine 1 and processes the data. The server 40 requests data from the data collection device 30 and receives data sent from the data collection device 30 . As described above, in the work machine information collection system, various data are exchanged between the data collection device 30 and the server 40, so that maintenance and inspection of the work machine 1 can be managed.

Hereinafter, the work machine information collection system will be described in detail by taking the work machine 1 as an example.

FIG. 2 shows a block diagram of a work machine information collection system. As shown in FIG. 2 , the data collection device 30 is mounted on the working machine 1 and connected to an in-vehicle network provided on the working machine 1 . This in-vehicle network is CAN, LIN, FlexRay, or the like, for example, and various signals (data) flow through the in-vehicle network when the work implement 1 operates. The data collection device 30 collects various data flowing through the in-vehicle network and stores the collected data when the working machine 1 operates.

Specifically, the data collection device 30 includes an operation data output unit 31 , a first determination unit 32 , a second determination unit 33 (determination unit), and a first communication unit 34 .

The operating data output unit 31 outputs operating data according to the operating state of the operating unit. For example, the operation data output unit 31 outputs operation data according to the operating state of the hydraulic pump P1 based on the output result of the sensor 101 while the hydraulic pump P1 is operating. Further, for example, the operation data output unit 31 outputs operation data according to the operating state of the bearing based on the output of the sensor 105 while the work implement 1 is running. Further, for example, when a switch for lighting the work light 91 is turned on, operation data corresponding to the operation state of the work light 91 is output based on a control signal output from the control device 100 to the work light 91 .

The first judging section 32 judges whether or not the operation data obtained when the operating section operates satisfies the first judgment condition for judging whether or not to issue a warning. The warning here is performed, for example, by turning on a warning light (not shown) provided in the driver's seat of the working machine 1 or by sounding an alarm. The first determination condition can be set using a first threshold. For example, when the physical quantity included in the operation data becomes equal to or less than the first threshold (or becomes equal to or greater than the first threshold), a warning is issued. You can do it.

The second determination unit 33 determines whether the operation data conforms to a determination condition (second determination condition) for determining whether or not to transmit the operation data output by the operation data output unit 31 to the server 40. determine whether The second judgment condition can be set using a second threshold that is looser than the first threshold used to determine whether to issue a warning.

3 and 4 are explanatory diagrams showing an example of threshold determination. For example, as shown in FIG. 3, when a warning is issued when the physical quantity included in the operation data falls below a first threshold, the physical quantity included in the operation data falls below a second threshold higher than the first threshold. When the physical quantity included in the operation data falls below the second threshold before executing the warning, it is determined to transmit the operation data to the server 40 .

Further, as shown in FIG. 4, when a warning is issued when the physical quantity included in the operation data exceeds the first threshold, the physical quantity included in the operation data exceeds the second threshold lower than the first threshold. When the physical quantity included in the operation data exceeds the second threshold value before executing the warning, it is determined to transmit the operation data to the server 40 .

That is, the second judgment condition is a condition for judging whether or not the physical quantity included in the operation data has reached a value corresponding to a warning, and the first judgment condition for judging whether or not to issue a warning ( This is a condition for determination based on the second threshold, which is looser than the first threshold. In other words, the second judgment condition is a condition for ascertaining that the physical quantity included in the operation data is approaching the first judgment condition corresponding to warning. When the first determination condition (first threshold) is 100% (1.0), for example, the second determination condition (second threshold) is ±20% with respect to the first determination condition (first threshold). % (set to less than the first threshold to 80% of the first threshold (0.8), more than the first threshold to 120% of the first threshold (1.2). The second threshold described above is an example , but not limited to.

The first communication unit 34 performs wireless communication with the server 40 and is composed of a communication device. When the second determination unit 33 determines that the physical quantity included in the operation data conforms to the second determination condition (second threshold value), the first communication unit 34 detects that the physical quantity included in the operation data is a warning. When the corresponding first determination condition (first threshold value) is approaching, operation data (first operation data) is transmitted to the server 40 . When receiving a request signal, which will be described later, from the server 40 , the first communication unit 34 transmits collected data (second operation data) corresponding to this request signal to the server 40 . Here, the thresholds (first threshold, second threshold) may differ for each operating unit.

When transmitting the operation data and collected data to the server 40 , the first communication unit 34 also transmits machine identification information for identifying the working machine 1 to the server 40 . As a result, since the operation data and collected data are associated with the machine identification information, it is possible to grasp which working machine 1 the operation data and collected data correspond to.

The server 40 has a diagnostic database 41 . The diagnostic database 41 is a set of data in which collected data are associated with operation data.

FIG. 5 is a diagram showing an example of the diagnostic database 41. As shown in FIG. The diagnostic database 41 stores operation data transmitted from the work machine 1 (first communication unit 34), that is, operation data (referred to as first operation data) transmitted to the server 40 in conformity with the second determination condition. and includes a table for determining operation data (second operation data) requested from the server 40 to the working machine 1 (first communication unit 34). In other words, the diagnostic database 41 includes operation data (first operation data) transmitted from the first communication unit 34 of the working machine 1 and collected data (first operating data) to collect minimum information necessary for diagnosing the working machine 1 (first data). 2 operating data).

For example, as shown in FIG. 5, when the first operation data is the output of the hydraulic pump P1, the second operation data is the pressure sensor value on the discharge side of the hydraulic pump (the value detected by the sensor 101), the engine speed (value detected by sensor 102) and oil temperature (value detected by sensor 103).

Further, when the first operation data is vibration, the second operation data is the engine speed, the hour meter, the output of the hydraulic pump P1, the amount of lubricating oil (the value detected by the sensor 104), and the acceleration of the bearing (the value detected by the sensor 105). detected value).

Furthermore, when the first operating data is the voltage of the work light 91, the second operating data indicates the input voltage, output voltage, and battery voltage of the control device 100. FIG. Note that the first operation data and the second operation data shown in FIG. 5 are examples and are not limited.

The server 40 further includes a collection determination unit 42 , a second communication unit 43 and a diagnosis unit 44 . The collection determination unit 42 is the operation data to collect the minimum necessary information for diagnosing the work machine 1 based on the operation data (first operation data) transmitted from the first communication unit 34 of the work machine 1. Determined as collected data (second operation data). When the server 40 receives (acquires) the first operation data, the collection determination unit 42 refers to the diagnostic database 41 and determines collection data. For example, as shown in FIG. 5, when the first operation data is the output of the hydraulic pump P1, the collection determination unit 42 determines the pressure sensor value, the engine speed, and the oil temperature as collection data. Further, when the first operation data is vibration, the collection determining unit 42 determines that the engine speed, the hour meter, the output of the hydraulic pump P1, the amount of lubricating oil, and the acceleration of the bearing are collected data. Further, when the first operation data is the voltage of the work light 91, the collection determination unit 42 determines the input voltage, output voltage, and battery voltage of the control device 100 as collection data.

The second communication unit 43 performs wireless communication with the data collection device 30 via a data communication network or the like, and transmits a request signal to the data collection device 30 requesting transmission of collected data determined by the collection determination unit 42 . and receives operation data transmitted from the first communication unit 34 . When receiving the request signal, the first communication unit 34 included in the data collection device 30 transmits the collected data corresponding to the request signal to the server 40 .

The diagnosis unit 44 diagnoses the state of the operation unit according to a predetermined diagnosis logic (algorithm) based on the collected data sent from the data collection device 30 side. The diagnostic unit 44 refers to the collected data and determines the state of the operating unit based on whether the collected data satisfies a preset diagnostic value.

FIG. 6 shows an example of collected data, judgment values, and diagnostic results. "O" shown in FIG. 6 indicates that the collected data satisfies the judgment value, and "X" indicates that the collected data does not satisfy the judgment value. Note that the determination value is determined for each collected data.

As shown in FIG. 6, when the collected data are the pressure sensor value, the engine speed, and the oil temperature, the diagnosis unit 44 determines whether the pressure sensor value, the engine speed, and the oil temperature respectively satisfy the judgment values. judge. If the pressure sensor value is equal to or higher than the judgment value and the engine is operating normally, and if the number of rotations of the engine is equal to or higher than the number of rotations (judgment value) at which the hydraulic pump P1 can be operated, the diagnosis unit 44 detects the oil temperature. is greater than or equal to the judgment value (for example, −10 degrees or more) and the viscosity of the hydraulic oil is low, the hydraulic pump P1 is diagnosed to be abnormal because the judgment value is satisfied. On the other hand, if the pressure sensor value is less than the judgment value, the diagnosis unit 44 diagnoses that the sensor is abnormal. If the number of engine revolutions is less than the judgment value, it is diagnosed that the number of revolutions of the engine has decreased.

In addition, when the collected data are the engine speed, the hour meter, the output of the hydraulic pump, the amount of lubricating oil, and the acceleration of the bearing, the diagnostic unit 44 determines the engine speed, the hour meter, the output of the hydraulic pump, the amount of the lubricant, the bearing acceleration, and the , respectively satisfy the judgment value. The diagnosis unit 44 determines that the number of revolutions of the motor is equal to or higher than the judgment value, the value of the hour meter is equal to or higher than the judgment value, the output of the hydraulic pump is equal to or higher than the judgment value, the amount of lubricating oil is equal to or higher than the judgment value, Moreover, when only the acceleration of the bearing is equal to or higher than the judgment value (the acceleration is large), it is diagnosed that the bearing is abnormal. On the other hand, if the amount of lubricating oil is less than the judgment value, the diagnosis unit 44 diagnoses insufficient lubricating oil.

Furthermore, when the collected data are the input voltage, the output voltage, and the battery voltage of the control device 100, the diagnosis unit 44 determines whether the input voltage, the output voltage, and the battery voltage respectively satisfy the judgment values. When the input voltage is equal to or higher than the judgment value and the voltage is such that the control device 100 can operate normally, the diagnosis unit 44 determines whether the output voltage is equal to or higher than the judgment value and is the voltage at which the output from the control device 100 is normal. It is determined that the work light 91 is abnormal. On the other hand, when the input voltage is less than the judgment value and the voltage is such that the control device 100 cannot operate normally, the diagnosis unit 44 diagnoses that the input voltage of the control device 100 is abnormal, and the output voltage is less than the judgment value. If the output voltage from the control device 100 is abnormal, it is diagnosed that the output voltage of the control device 100 is abnormal, and if the battery voltage is below the judgment value, it is diagnosed that the battery voltage is low.

Next, with reference to the flowchart of FIG. 7, the characteristic processing operation of this embodiment will be described for the case where the operating unit is the hydraulic pump P1.

First, when the engine is started and the work machine 1 is driven, the first determination unit 32 provided in the data collection device 30 sets the first operation data as the first determination condition for determining whether or not to issue a warning. It is determined whether or not the output value of a certain hydraulic pump P1 is suitable. Here, whether or not to issue a warning is determined based on whether or not the output value of the hydraulic pump P1, which is the first operation data, is equal to or less than the first threshold value (S1).

If the output value of the hydraulic pump P1 is equal to or less than the first threshold value (Yes in S1), that is, if the first judgment condition is met, for example, a warning light (not shown) provided in the driver's seat of the work implement 1 is turned on. or by sounding a buzzer (S2). As a result, the operator who operates the working machine 1 can visually and audibly know the abnormality of the hydraulic pump P1.

Subsequently, the second determination unit 33 included in the data collection device 30 determines whether the output value of the hydraulic pump P1 meets the second determination condition for determining whether or not to transmit the output value of the hydraulic pump P1 to the server 40. determine whether or not Here, it is determined whether or not to transmit to the server 40 based on whether or not the output value of the hydraulic pump P1 is equal to or less than a second threshold value higher than the first threshold value (S3). If the determination in step S1 is No, the process similarly advances to step S3 to determine whether the output value of the hydraulic pump P1 meets the second determination condition.

If it is determined that the output value of the hydraulic pump P1 should be transmitted to the server 40 according to the determination result (Yes in S3), that is, if the second determination condition is met, the data collection device 30 has The first communication unit 34 performs a process of transmitting the output value of the hydraulic pump P1 to the server 40 (S4). It should be noted that if the determination in step S3 is No, the processing operation is terminated. Further, if there is no abnormality on the working machine 1 side, it is judged No in step S3 and the process ends.

Subsequently, on the server 40 side, based on the operation data transmitted from the working machine 1, a predetermined table is referred to, and the collection determining unit 42 determines the collected data (pressure sensor value), which is the second operation data necessary for diagnosis. , engine speed, oil temperature) are determined (S5). Then, based on the determination, the second communication unit 43 transmits a request signal requesting collection data (pressure sensor value, engine speed, oil temperature) to the data collection device 30 (S6). Then, on the data collection device 30 side, when the first communication unit 34 receives the request signal, it transmits the collected data (pressure sensor value, engine speed, oil temperature) requested by the request signal to the server 40 ( S7).

In this manner, collected data necessary for diagnosis is determined based on the transmitted operation data, and by transmitting a request signal for requesting collected data based on this determination, the server 40 narrows down the data to be collected. , and it is possible to prevent a large amount of data from being unnecessarily transmitted from the data collection device 30 side to the server 40 side.

The diagnosis unit 44 provided in the server 40 diagnoses the state of the hydraulic pump P1 based on the collected data (pressure sensor value, engine speed, oil temperature) sent from the data collection device 30 (S8).

Next, with reference to the flow chart of FIG. 8, the case where the moving part is a bearing will be described.

First, when the engine is started and the work machine 1 is driven, the first determination unit 32 provided in the data collection device 30 sets the first operation data as the first determination condition for determining whether or not to issue a warning. Determine if the vibration value of a bearing is acceptable. Here, it is determined whether or not to issue a warning based on whether or not the vibration value of the bearing, which is the first operation data, is equal to or less than the first threshold value (S11). When the vibration value of the bearing is equal to or less than the first threshold value (Yes in S11), that is, when the first judgment condition is met, for example, a warning light (not shown) provided in the driver's seat of the working machine 1 is turned on. , or by sounding a buzzer (S12). As a result, the worker who operates the working machine 1 can know the abnormality of the bearing visually and audibly.

Subsequently, the second determination unit 33 included in the data collection device 30 determines whether or not the vibration value of the bearing conforms to the second determination condition for determining whether or not to transmit the vibration value of the bearing to the server 40. to decide. Here, it is determined whether or not to transmit to the server 40 based on whether or not the vibration value of the bearing is equal to or less than a second threshold higher than the first threshold (S13). If the determination in step S11 is No, the process similarly advances to step S13 to determine whether the vibration value of the bearing meets the second determination condition.

If it is determined that the vibration value of the bearing should be transmitted to the server 40 according to the result of this determination (Yes in S13), that is, if the second determination condition is met, the first The communication unit 34 performs processing for transmitting the vibration value of the bearing to the server 40 (S14). It should be noted that if the determination in step S13 is No, the processing operation is terminated. Further, if there is no abnormality on the working machine 1 side, it is judged No in step S13 and the process ends.

Subsequently, on the server 40 side, based on the operation data transmitted from the working machine 1, a predetermined table is referred to, and the collection determination unit 42 determines the collected data (motor rotation speed), which is the second operation data necessary for diagnosis. , hour meter, output of hydraulic pump P1, amount of lubricating oil, acceleration of bearing) are determined (S15). Then, based on the determination, the second communication unit 43 requests the data collection device 30 to collect data (motor speed, hour meter, output of hydraulic pump P1, amount of lubricating oil, acceleration of bearing). A signal is transmitted (S16). Then, on the data collection device 30 side, when the first communication unit 34 receives the request signal, the collected data requested by the request signal (motor speed, hour meter, output of hydraulic pump P1, amount of lubricating oil, bearing acceleration) is transmitted to the server 40 (S17).

The diagnosis unit 44 provided in the server 40 detects the state of the bearing based on the collected data (motor speed, hour meter, output of the hydraulic pump P1, amount of lubricating oil, acceleration of the bearing) sent from the data collection device 30 side. is diagnosed (S18).

Next, with reference to the flow chart of FIG. 9, the case where the operating part is the work light 91 will be described.

First, when the engine is started and the work machine 1 is driven, the first determination unit 32 provided in the data collection device 30 sets the first operation data as the first determination condition for determining whether or not to issue a warning. It is determined whether the voltage value of a certain work light 91 is suitable. Here, whether or not to issue a warning is determined based on whether or not the voltage value of the work light 91, which is the first operation data, is equal to or less than the first threshold value (S21). When the voltage value of the work light 91 is equal to or less than the first threshold (Yes in S21), that is, when the first judgment condition is met, for example, a warning light (not shown) provided in the driver's seat of the work machine 1 is turned on. or by sounding a buzzer (S22). As a result, the worker who operates the work machine 1 can know the abnormality of the work light 91 visually and audibly.

Subsequently, the second determination unit 33 included in the data collection device 30 determines whether the voltage value of the work light 91 meets the second determination condition for determining whether to transmit the voltage value of the work light 91 to the server 40. determine whether or not Here, it is determined whether or not to transmit to the server 40 based on whether or not the voltage value of the work light 91 is equal to or lower than a second threshold higher than the first threshold (S23). If the determination in step S1 is No, the process similarly proceeds to step S23 to determine whether the voltage value of the work light 91 meets the second determination condition.

If it is determined that the voltage value of the work light 91 should be transmitted to the server 40 according to the determination result (Yes in S23), that is, if the second determination condition is met, the data collection device 30 has The first communication unit 34 performs processing for transmitting the voltage value of the work light 91 to the server 40 (S24). It should be noted that if the determination in step S23 is No, the processing operation is terminated. Further, when there is no abnormality on the work machine 1 side, it is judged No in step S23 and the process ends.

Subsequently, on the server 40 side, based on the operation data transmitted from the working machine 1, a predetermined table is referred to, and the collection determining unit 42 determines the collected data (control device 100 input voltage, output voltage, and battery voltage) are determined (S25). Then, based on the determination, the second communication unit 43 transmits a request signal requesting collection data (input voltage, output voltage, and battery voltage of the control device 100) to the data collection device 30 (S26). .

Then, on the data collection device 30 side, when the first communication unit 34 receives the request signal, the collected data (input voltage, output voltage, battery voltage of the control device 100) requested by the request signal is sent to the server 40. Send (S27).

The diagnosis unit 44 provided in the server 40 diagnoses the state of the work light 91 based on the collected data (input voltage, output voltage, battery voltage of the control device 100) sent from the data collection device 30 (S28 ).

If all diagnostics are to be performed as in the conventional method, it is necessary to transmit a large amount of data from work implement 1 to server 40 from the beginning. In this respect, in the present embodiment, data to be transmitted can be narrowed down by once determining whether diagnosis is necessary on the working machine 1 side (steps S3, S13, and S23 described above). On the server 40 side, only the data necessary for diagnosis is requested from the working machine 1 side (steps S6, S16, and S26 described above), so that the overall communication traffic can be reduced.

In the present embodiment, the backhoe is exemplified, but the application of the present invention is not limited to this, and various types of machines such as agricultural machines such as tractors, combine harvesters and rice transplanters, construction machines such as compact track loaders and skid steer loaders, etc. can be applied to the work machine of

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

Reference Signs List 1 : Working machine 2 : Traveling device 3 : Revolving body 4 : Running body 5 : Dozer 9 : Driver's seat 11 : Revolving bearing 12 : Revolving base 13 : Working device 14 : Cabin 16 : Support bracket 17 : Swing bracket 18 : Boom 19 : Arm 20 : Bucket 21 : Bucket cylinder 22 : Boom cylinder 23 : Arm cylinder 25 : Display device 30 : Data collection device 31 : Operation data output unit 32 : First judgment unit 33 : Second judgment unit 34 : First communication unit 40 : Server 41 : Diagnosis database 42 : Collection determination unit 43 : Second communication unit 44 : Diagnosis unit 90 : Control valve 91 : Work light 92 : Prime mover 100 : Control device 101 : Sensor 102 : Sensor 103 : Sensor 104 : Sensor 105: Sensor 106: Sensor M: Travel motor P1: Hydraulic pump

Claims (5)

A work machine information collection system in which a work machine having a working part and a server are communicably connected,
The work machine is
an operation data output unit that outputs operation data according to the operation state of the operation unit;
a determination unit that determines whether or not the operation data conforms to a determination condition for determining whether or not the operation data output by the operation data output unit is to be transmitted to the server;
a first communication unit configured to transmit the operation data to the server when the determination unit determines that the operation data conforms to a determination condition;
A work machine information collection system. The server is
a collection determination unit that determines collection data, which is operation data to be collected for diagnosis of the working machine, based on the operation data transmitted from the first communication unit;
a second communication unit configured to transmit a request signal requesting transmission of the collected data determined by the collection determination unit to the working machine;
including
2. The work machine information collection system according to claim 1, wherein said first communication unit transmits collected data corresponding to said request signal to said server when said request signal is received. The server is
3. The work machine information collection system according to claim 2, further comprising a diagnostic section for diagnosing a state of said operating section based on said collected data. a first judgment unit for judging whether or not the operation data conforms to a first judgment condition for judging whether or not to issue a warning;
a warning unit that issues a warning when the first determination unit determines that the
The determination unit is a second determination unit,
The determination condition is a second determination condition,
The first judgment condition is
including a first threshold for determining a state of a signal included in the operation data;
The second judgment condition is
4. The work machine information collection system according to any one of claims 1 to 3, further comprising a second threshold value higher than the first threshold value for determining the state of the signal included in the operation data. a first judgment unit for judging whether or not the operation data conforms to a first judgment condition for judging whether or not to issue a warning;
a warning unit that issues a warning when the first determination unit determines that the
The determination unit is a second determination unit,
The determination condition is a second determination condition,
The first judgment condition is
including a first threshold for determining a state of a signal included in the operation data;
The second judgment condition is
4. The work machine information collection system according to any one of claims 1 to 3, further comprising a second threshold value lower than the first threshold value for determining the state of the signal included in the operation data.

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