JP2008169634A - Information collection device of construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information collection device of a construction machine capable of reducing useless data stored in a volatile storage means. <P>SOLUTION: A hydraulic excavator 1 is provided with a volatile first storage means 41, a nonvolatile second storage means 42, a data acquisition processing means for acquiring various data related to control of the hydraulic excavator 1, a first preservation processing means for storing the data acquired by this data acquisition processing means in the first storage means 41, an abnormality discriminating means for discriminating whether or not its data indicates abnormality every time when this first preservation processing means stores the data in the first storage means, and an arithmetic processing unit 39 functioning as a second preservation processing means for storing only the data stored in the first storage means 41 in the second storage means 42 in a limited time zone such as a first time zone before acquisition time of data discriminated as the data indicating the abnormality by this abnormality discriminating means and a second time zone after the acquisition time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a construction machine information collecting apparatus that is provided in a construction machine such as a hydraulic excavator or a wheel loader and collects data related to the control of the construction machine.

  Conventional construction machine information collection devices are capable of storing data only while power is supplied, that is, volatile storage means (RAM) and various data related to construction machine control. Data acquisition processing means for intermittently acquiring data, storage processing means for storing the data acquired by the data acquisition processing means in the storage means, and information stored in the storage means on the administrator side such as a user or manufacturer And a means for extracting the data upon request and transmitting it to the manager via a satellite (see Patent Document 1).

According to the conventional construction machine information collecting apparatus configured as described above, the administrator side preferentially collects the data related to the abnormality that causes the construction machine to pause from the data stored in the storage unit. can do.
JP 2005-149310 A

  As described above, the conventional construction machine information collection device includes volatile storage means. Since this storage means has a high price per unit capacity, there is a demand for reducing the storage capacity of the storage means by reducing unnecessary data stored in the storage means.

  The present invention has been made in consideration of the above-described actual situation, and an object of the present invention is to provide an information collecting apparatus for a construction machine that can reduce useless data stored in a volatile storage means. .

  The present invention is configured as follows to achieve the above-described object.

[1] The present invention provides a volatile first storage unit, a non-volatile second storage unit, a data acquisition processing unit that acquires various data related to the control of the construction machine, and the data acquisition processing unit. First storage processing means for storing the stored data in the first storage means, and whether the data indicates an abnormality each time the first storage processing means stores new data in the first storage means An abnormality determination means for determining whether or not the first storage is performed in a first time zone from a time point at which data determined to be abnormal by the abnormality determination means to a time point that is set in advance of a preset time. Data stored in the first storage means and data stored in the first storage means in a second time period from the acquisition time point to a time point that has passed in advance is stored in the second storage means. Save And the first storage means, the second storage means, the data acquisition processing means, the first storage processing means, the abnormality determination means, and the second storage processing means are provided in the construction machine. Features.

  In the present invention configured as described above, various data related to the control of the construction machine are intermittently acquired by the data acquisition processing unit, and the acquired data is acquired every time the data acquisition processing unit acquires the data. Whenever the first storage processing unit stores the first storage unit and new data is stored in the first storage unit, the abnormality determination unit determines whether or not the new data indicates abnormality. When the abnormality determining means determines that the data indicates an abnormality, the second storage processing means causes the second storage processing means to store the data stored in the first storage means during the first and second time zones.

  By the way, the work performed by the construction machine is often composed of repetitive operations. Most of the data necessary for investigating the cause of the abnormality occurring during the repetitive operation can be obtained in one cycle of the repetitive operation. Therefore, considering only the abnormality that has occurred during a specific repetitive operation, the time zone that combines the first time zone and the second time zone only needs to include one cycle of the specific repetitive operation. Does not need more time. In addition, when considering the whole of the various repetitive operations performed by the construction machine, the time zone combining the first time zone and the second time zone is one cycle of the repetitive operation that takes the longest time in one cycle among the various repetitive operations. The same time as the minute time will be good.

  In the present invention, since the data to be stored in the second storage means is only the data stored in the first storage means in the first and second time zones in which the time length can be set based on the above-described concept, It can be said that the data that is no longer likely to be stored in the second storage means and the new data that may be stored in the second storage means are sequentially replaced with respect to one storage means. As a result, the above-described object of reducing useless data stored in the volatile first storage means can be achieved.

  For the same reason, waste of data stored in the non-volatile second storage means can be eliminated.

[2] In the present invention described in “[1]”, the preset time for determining the length of the first time zone and the length of the second time zone are set in advance. Each of the set times is set to be substantially the same as a time corresponding to a half cycle of a predetermined type of repetitive operation performed by the construction machine.

[3] The present invention includes the sampling period setting means for changing a sampling period for determining a time interval for causing the data acquisition processing means to acquire data intermittently in the invention described in “[1]”. It is characterized by.

[4] In the present invention described in “[1]”, the time interval between the data stored in the second storage means is longer than the time interval between the data stored in the first storage means. And a thinning-out processing means.

[5] In the present invention described in “[1]”, the present invention provides the preset time for determining the length of the first time zone and the preset time for determining the length of the second time zone. The time period is a multiple of a sampling period that defines a time interval for causing the data acquisition processing means to acquire data intermittently.

[6] In the present invention described in “[1]”, the preset time for determining the length of the first time zone and the length of the second time zone are set for the preset time. And a collection time changing means for changing the time.

[7] In the present invention described in “[1]”, the present invention relates in advance to the type of abnormality from the data stored in the first storage means in the first time zone and the second time zone. The second storage processing unit is set so that data corresponding to the type of the selected data is selected and stored in the second storage unit.

[8] In the present invention described in “[7]”, the present invention selects and sets the data type (corresponding data type) previously associated with the type of abnormality from among the types registered in advance. It is characterized by comprising data type setting means that makes it possible to do this.

  According to the present invention, as described above, useless data stored in the volatile storage unit (first storage unit) can be reduced. As a result, the storage capacity of the storage means can be reduced as compared with a conventional construction machine information collection device.

  Before describing an embodiment of an information collecting apparatus for a construction machine according to the present invention, a construction machine to which the present invention is applied will be described with reference to FIGS. FIG. 1 is a view showing a hydraulic excavator as an example of a construction machine to which an embodiment of an information collecting apparatus for a construction machine according to the present invention is applied, and FIG. 2 shows various hydraulic actuators provided in the hydraulic excavator shown in FIG. It is the schematic which shows a part of hydraulic drive device to control.

  As shown in FIG. 1, a hydraulic excavator 1 is connected to a traveling body 2 driven by a pair of left and right traveling motors 3 (only the left side is shown), and is pivotably coupled to an upper portion of the traveling body 2. And a revolving body 4 adapted to be driven by a motor 6. A front working device 7 is provided in the center of the front portion of the swivel body 4. The front working device 7 includes a boom 8 that is rotatably coupled to the center of the front portion of the revolving structure 4, an arm 9 that is pivotally coupled to the boom 8, and a pivotally coupled to the arm 9. Bucket 10 is provided. The boom 8, arm 9, and bucket 10 are driven by a pair of boom cylinders 11 (only the left side is shown) arm cylinder 12 and bucket cylinder 13, respectively.

  As shown in FIG. 2, the hydraulic drive device 14 of the excavator 1 sucks the hydraulic oil from the hydraulic oil tank 15 and the hydraulic oil tank 15, and the various hydraulic actuators described above, that is, the pair of travel motors 3 and the swing motor. 6, a main pump 16 that discharges the pressure oil supplied to each of the pair of boom cylinders 11, arm cylinders 12, and bucket cylinders 13, and a regulator 17 that operates the discharge flow rate of the main pump 16 (part surrounded by a one-dot chain line) ) And an electromagnetic valve 18 for controlling the pressure for operating the regulator 17.

  The hydraulic drive device 14 is a first travel control valve (not shown) that controls the flow of pressure oil supplied to one of the pair of travel motors 3 and a first that controls the flow of pressure oil supplied to the other. 2 a control valve for traveling, a control valve for turning that controls the flow of pressure oil supplied to the turning motor 6, a control valve for boom that controls the flow of pressure oil supplied to the pair of boom cylinders 11, and the arm cylinder 12 An arm control valve that controls the flow of pressure oil supplied and a bucket control valve that controls the flow of pressure oil supplied to the bucket cylinder 13 are provided (not shown). Also, a pair of first traveling pilot valves that generate pilot pressure to be applied to the first traveling control valve, a pair of second traveling pilot valves that generate pilot pressure to be applied to the second traveling control valve, and a turning control valve A pair of pivot pilot valves for generating pilot pressure to be applied to a pair, a pair of boom pilot valves for generating pilot pressure to be applied to a boom control valve, and a pair of arm pilot valves for generating pilot pressure to be applied to an arm control valve, Also, a pair of bucket pilot valves that generate pilot pressure to be applied to the bucket control valve is provided (not shown).

  The hydraulic drive unit 14 includes a pair of first traveling pilot valves, a pair of second traveling pilot valves, a pair of turning pilot valves, a pair of boom pilot valves, a pair of arm pilot valves, and a pair The first traveling operation device, the second traveling operation device, the turning operation device, the boom operation device, the arm operation device, and the bucket operation device for operating each of the bucket pilot valves are provided. The first travel operation device incorporates a pair of first travel pilot valves, and the pair of first travel pilot valves can be operated with an operation pedal. The second travel operation device is configured in the same manner as the first travel operation device. Further, the turning operation device incorporates a pair of turning pilot valves, and the pair of turning pilot valves can be operated by an operation lever. The boom operation device, the arm operation device, and the bucket operation device are also configured in the same manner as the turning operation device. In FIG. 2, all the operation devices are collectively indicated by 19 for simplification of the drawing. Reference numeral 20 denotes a pilot pump for supplying a primary pressure of a pilot pressure to various pilot valves.

  The hydraulic drive device 14 includes a diesel engine 21 that drives the main pump 16 and the pilot pump 20. The engine 21 includes a common rail fuel injection pump and an engine controller 23 that is composed of a computer-based device and controls the common rail fuel injection pump 22. The fuel injection pump 22 includes various sensors for detecting physical quantities related to engine control, such as an atmospheric pressure sensor, a torque sensor, a common rail pressure sensor, and an engine speed sensor (hereinafter, these various sensors are collectively referred to as “engine control relations”). Sensor ") (not shown). The engine controller 23 performs engine control according to a command given from the outside and a detection result by an engine control related sensor.

  The hydraulic drive unit 14 includes various sensors (hereinafter referred to as various types of sensors) that detect physical quantities related to the control of the hydraulic excavator 1 other than the engine 21, that is, the control of the operations of the traveling body 2, the turning body 4, and the front work device 7. The sensors are collectively referred to as “vehicle body control related sensors”). In addition, electric devices (excluding those provided in the engine 21) related to the control of the operations of the traveling body 2, the turning body 4, and the front work device 7 are controlled according to the detection result by the vehicle body control related sensor. The vehicle body controller 24, which is a computer-based device, is provided. As the vehicle body control related sensor, for example, a pressure sensor for detecting a pressure at a predetermined portion in the hydraulic circuit, such as a pressure sensor 25 for detecting the output pressure of the pilot valve, the boom 8, the arm 9, and the bucket 10 are used. Sensors that detect physical quantities related to the control results, such as angle sensors 26 and 27 that detect the respective angles of the sensors, and angle sensors that detect the rotation angle of the engine rotation speed instruction dial 28 that is manually operated to rotate. There is a sensor for generating a command signal related to the control of the hydraulic excavator 1 built in various input devices in the cab 5.

  The vehicle body controller 24 and the engine controller 23 are connected via an electric signal line 29. When a command signal from a sensor of various input devices in the cab 5 is input, the vehicle body controller 24 determines whether the command signal includes command data related to engine control, and the determination result is true. In some cases, destination data indicating that the data is addressed to the engine controller 23 is added to the command data, and the command data is output to the electric signal line 29. The engine controller 23 acquires command data from the vehicle body controller 24 at a preset sampling cycle, and performs engine control according to the command data.

  An embodiment of a construction machine information collecting apparatus of the present invention will be described.

  Reference numeral 30 in FIG. 2 denotes an information collecting apparatus according to this embodiment, which is connected to the engine controller 23 and the vehicle body controller 24 via an electric signal line 29. The engine controller 23 adds destination data indicating that the data is addressed to the information collecting device 30 to data indicating the detection result by the engine control related sensor, and outputs the data to the electric signal line 29. . The vehicle body controller 24 adds destination data indicating that the data is addressed to the information collecting device 30 to data indicating the detection result by the above-described vehicle body control-related sensor, and outputs the data to the electric signal line 29.

  FIG. 3 is a block diagram showing an embodiment of the information collecting apparatus for construction machines according to the present invention. 4 is a diagram showing various operation keys provided in the input device shown in FIG. 3 and an example of a collection time setting screen displayed on the display device, and FIG. 5 is an example of a sampling cycle setting screen displayed on the display device. FIG. 6 is a diagram showing an example of a data type setting screen displayed on the display device. This is the information collection device 30 shown in FIG.

  As shown in FIG. 3, the information collection device 30 is connected to an input device 31 having a cross key 32, a numeric keypad 33, an Enter key 34, and a Del key 35, a display device 36, and the input device 31 and the display device 36. And a computer 37. The computer 37 is also connected to the vehicle body controller 24 and the engine controller 23.

  The computer 37 includes an input / output interface 38 that exchanges data with the input device 31, the display device 36, the vehicle body controller 24, and the engine controller 23, an arithmetic processing device 39 (CPU), and the arithmetic processing device 39. An arithmetic processing unit comprising a read-only storage means (ROM) 40 in which a program and data for specifying processing are stored in advance, and a property that can store data only while power is supplied, that is, a volatile storage device 39 is a first storage means 41 (RAM), and a second storage means composed of a non-volatile storage device (FLASH MEMORY) capable of storing data regardless of whether power is supplied or not. 42.

  In the read-only storage means 40, the following (1) data acquisition processing program, (2) first storage processing program, (3) abnormality determination program, and (4) No. (2) A storage processing program, (5) a collection time setting program, (6) a sampling period setting program, and (7) a data type setting program are stored in advance.

  (1) The data acquisition processing program detects various data related to the control of the hydraulic excavator 1, that is, the detection by the above-described engine control-related sensor output from the engine controller 23 to the information collecting device 30 to the electric signal line 29. Data indicating the result and data indicating the detection result by the vehicle body control related sensor output from the vehicle body controller 24 to the information collecting device 30 to the electric signal line 29 are intermittently set at a preset sampling cycle. The operation procedure of the arithmetic processing device 39 is designated so that the arithmetic processing device 39 functions as a data acquisition processing means for acquiring data. The sampling period is stored in a sampling period storage area 42c provided in the second storage unit 42.

  (2) The first storage processing program is configured so that the arithmetic processing device 39 functions as a first storage processing unit that stores the data acquired by the data acquisition processing unit in the first storage unit 41. The operation procedure is specified.

  (3) The abnormality determination program is an arithmetic processing unit 39 as abnormality determination means for determining whether or not the data indicates abnormality every time the first storage processing means stores new data in the first storage means 41. The operation procedure of the arithmetic processing unit 39 is designated so that the

  (4) The second storage processing program is first stored in the first time zone from the time when the data determined to be abnormal by the abnormality determining means to the time when the preset time is traced back. The data stored in the means 41 and the data stored in the first storage means 41 in the second time zone from the acquisition time to the time after a preset time are extracted from the second storage means 42. The operation procedure of the arithmetic processing unit 39 is specified so that the arithmetic processing unit 39 functions as a second storage processing unit stored in the data storage area 42a.

  The preset time for determining the length of the first time zone (hereinafter referred to as “first collection time”) and the preset time for determining the length of the second time zone (hereinafter referred to as “second collection time”). Are set at the same time, for example, and are stored in the collection time storage area 42b provided in the second storage means 42. The initial setting of the first and second collection times is set to be substantially the same as, for example, a time corresponding to 1/2 cycle of a predetermined type of repetitive operation performed by a hydraulic excavator. The type of repetitive operation performed by the excavator 1 is, for example, an operation of leveling the soil surface by repeatedly reciprocating the bucket 10 on the same plane, and a soil surface leveling operation that requires T1 [sec] in one cycle. , “Excavation → Turning → Taking out → Turning → Excavation”, which repeats the excavation operation that requires T2 (<T1) [sec] seconds in one cycle, and reciprocating the bucket 10 up and down. There are three types of operations: crushing rocks and the like, and crushing operations that require T3 (<T2) [sec] in one cycle. In the present embodiment, the initial setting of the first and second collection times is substantially the same time t1 as the time of 1/2 cycle of the soil leveling operation that requires the longest time among the three types of repetitive operations. ing.

  The second storage processing program further stores the type of data (hereinafter referred to as “corresponding data”) previously associated with the type of abnormality from the data stored in the first storage means 41 in the first time zone and the second time zone. The operation procedure of the arithmetic processing unit 39 is designated so that data corresponding to “type of” is selected and stored in the second storage means 42. The type of abnormality and the corresponding data type are stored in a data type storage area 42d provided in the second storage means 42.

  The type of the corresponding data is set by associating the type of abnormality with the type of data related to the abnormality in terms of control. For example, because control of common rail pressure involves engine torque, engine speed, and atmospheric pressure, the type of abnormality such as abnormal common rail pressure is associated with the type of data such as engine torque, engine speed, and atmospheric pressure. Is done.

  (5) The collection time setting program changes at least one of the first and second collection times stored in the collection time storage area 42b of the second storage unit 42, for example, both in accordance with a command from the input device 31. The operation procedure of the arithmetic processing unit 39 is specified so that the arithmetic processing unit 39 functions as a collection time changing unit.

  The collection time setting program further displays a collection time setting screen 43 (shown in FIG. 4) on the display device 36 according to the operation of the input device 31 for facilitating the setting change of the first and second collection times. The operation procedure of the arithmetic processing unit 39 is designated so that the arithmetic processing unit 39 functions as a display control means.

  As shown in FIG. 4, on the collection time setting screen 43, the computer 37 is selected to select a time t1 that is substantially the same as the half cycle of the soil leveling operation as the set value of the first and second collection times. A first radio button 43a for commanding and a second radio for commanding the computer 37 to select a time t2 that is substantially the same as the half cycle of the excavation operation as a set value for the first and second acquisition times. A button 43b, a third radio button 43c for instructing the computer 37 to select approximately the same time t3 as about half a cycle of the crushing operation as a set value for the first and second collection times, , A free setting button 43d for instructing the computer 37 to select the setting by numerical input of the second collection time is displayed. Also, when the free setting button 43d is selected, the input field 43e that becomes effective when the numeric keypad 33 of the input device 31 is displayed as the input value of the first and second collection times, and the input value is set. A confirmation button 43f for instructing the arithmetic processing unit 39 to confirm the value, that is, to store the input value in the collection time storage area 42b of the second storage means 42 is displayed. Yes.

  (6) The sampling cycle setting program is an arithmetic processing unit serving as a sampling cycle setting unit that changes the setting value of the sampling cycle stored in the sampling cycle storage area 42c of the second storage unit 42 according to a command from the input device 31. The operation procedure of the arithmetic processing unit 39 is designated so that the functioning unit 39 functions.

  The sampling cycle setting program further serves as display control means for causing the display device 36 to display a sampling cycle setting screen 44 (shown in FIG. 5) for facilitating changing the setting of the sampling cycle according to the operation of the input device 31. The operation procedure of the arithmetic processing device 39 is designated so that the arithmetic processing device 39 functions.

  As shown in FIG. 5, the sampling cycle setting screen 44 displays the sampling cycle Ts1 [msec] associated with the soil leveling operation that is the slowest among the three types of repetitive operations described above. A sampling period Ts2 (<Ts1) [msec] associated with the second slowest excavation operation, and a sampling period Ts2 (<Ts1) [msec] The second radio button 44b for instructing the computer 37 to select the set value and the sampling cycle Ts3 (<Ts2) [msec] associated with the fastest crushing operation are selected as the sampling cycle. Third radio button 44c for instructing the computer 37 and numerical input of the sampling period A free setting button 44d for instructing the computer 37 to select the settings are to be displayed that. Also, it becomes effective when the free setting button 44d is selected, and an input field 44e for displaying a numerical value input by the numeric keypad 33 of the input device 31 as an input value of the sampling period, and confirming the input value as a set value. That is, a confirmation button 44f for instructing the computer 37 to store the input value in the sampling cycle storage area 42c of the second storage means 42 is displayed.

  Note that the sampling cycle setting program corresponds to one of the above-described three types of repetitive operations stored in the collection time storage area 42b of the second storage means 42. The sampling cycle corresponding to the same type of repetitive motion as that of the repetitive motion is set to be stored in the sampling cycle storage area 42c of the second storage means 42.

  In addition, the sampling cycle setting program sets the first to third types of repetitive operations corresponding to any one of the first to third radio buttons 43a to 43c turned on in the collection time setting screen 43 to the first to first turned on in the sampling cycle setting screen 44. It is set to cause the arithmetic processing unit 39 to perform display control for matching the type of repetitive operation corresponding to any one of the third radio buttons 44a to 44c. For example, as shown in FIGS. 4 and 5, when the first radio button 43 a is turned on on the collection time setting screen 43, the first radio button 44 a is also turned on on the sampling period setting screen 44.

  The sampling cycle setting program is used when the first and second acquisition times stored in the acquisition time storage area 42b of the second storage means 42 do not correspond to any of the three types of repetitive operations described above. The input value from the numeric keypad 33 of the input device 31 is set to be stored in the sampling cycle storage area 42c of the second storage means 42 as a sampling cycle.

  (7) The data type setting program calculates the corresponding data type so that the arithmetic processing unit 39 functions as a data type setting unit that allows the type of the corresponding data to be selected and set from among registered types. The operation procedure of the processing device 39 is designated.

  The data type setting program further displays a data type setting screen 45 (shown in FIG. 6) for facilitating setting change of the type of corresponding data for each type of abnormality in accordance with the operation of the input device 31. The operation procedure of the arithmetic processing device 39 is designated so that the arithmetic processing device 39 functions as a display control means to be displayed on 36.

  As shown in FIG. 6, in the data type setting screen 45, an abnormality list 45a listing the types of abnormalities determined by the above-described abnormality determining means and the fault codes associated with the types of abnormalities is listed. And a corresponding data list 45b listing the types of corresponding data selected from the abnormality list 45a. In the correspondence data list 45b, a check box is provided on the rear end side of each of the listed correspondence data types.

  The type of abnormality currently selected or the type of corresponding data is indicated by a cursor 45c made of an encircling line like “common rail pressure abnormality” shown in FIG. In the correspondence data list 45b, “engine torque”, “engine speed”, “target engine speed”, “cooling water temperature”,... "Atmospheric pressure", ... are listed, and among these, in the check box on the rear end side of the type of corresponding data currently selected, for example, "Engine torque", "Engine speed", "Atmospheric pressure" As shown in the check boxes 45d, 45e, and 45h on the rear end side of “”, check marks are displayed.

  The initial setting of the type of the corresponding data is all the types of data registered in advance as those that can be associated with the type of abnormality. For example, in the case of “common rail pressure abnormality”, the initial setting of the corresponding data type is “engine torque”, “engine speed”, “target engine speed”, “cooling water temperature”,. All of "...". In the corresponding data list 45b displaying the initial settings, check marks are displayed in all the check boxes 45d, 45e, 45f, 45g,..., 45h,.

  4 to 6, a collection time setting button 46, a sampling period setting button 47, and a data type setting button 48 are provided at the upper part of each of the collection time setting screen 43, the sampling period setting screen 44, and the data type setting screen 45. Each is displayed. When the collection time setting button 46 is operated, the collection time setting program is activated, and when the collection time setting screen 43 shown in FIG. 4 and the sampling period setting button 47 are operated, the sampling period setting program is activated and the sampling period shown in FIG. When the setting screen 44 and the data type setting button 48 are operated, the data type setting program is activated and the data type setting screen 45 shown in FIG. 6 is displayed. In FIG. 4, the color of the collection time setting button 46 is in an inverted state, and the other setting buttons 47 and 48 are not in such a state. The time setting screen 43 is shown. The same applies to the states of the setting buttons 46 to 48 shown in FIGS.

  The present embodiment (information collecting apparatus 30) configured as described above operates as follows.

≪Setting of collection time and sampling period by radio button≫
The operator sets the collection time and sampling period before working on the excavator 1. For example, when excavation work is performed with the hydraulic excavator 1, the following setting operation is performed in order that the collection time and the sampling period correspond to the excavation operation.

  First, the operator turns on the information collecting device 30. In the computer 37 of the information collecting apparatus 30 that is turned on, the arithmetic processing unit 39 reads the collection time setting program and the display control program from the read-only storage means 40 and functions as the collection time setting means and the display control means. Thereby, the collection time setting screen 43 is displayed on the display device 36 as an initial screen. Since the initial setting of the first and second collection times is the time t1 corresponding to the soil leveling operation, the first radio button 43a is displayed on the collection time setting screen 43 when the power is turned on as shown in FIG. Is on.

  Next, the operator operates the cross key 32 of the input device 31 to select the second radio button 43b, and operates the Enter key 34 in this state to turn on the second radio button 43b. Next, the cross key 32 is operated to select the confirmation button 43f, and the Enter key 34 is operated in this state. As a result, the computer 37 is instructed to set the first and second collection times corresponding to the excavation operation, and the arithmetic processing unit 39 corresponds to the excavation operation in the collection time storage area 42b of the second storage means 42. The time t2 is stored. This completes the collection time setting change.

  When the collection time setting change is completed in this way, the arithmetic processing unit 39 reads the sampling cycle setting program from the read-only storage means 40 and functions as a sampling interval setting means. As a result, the sampling period stored in the sampling period storage area 42c of the second storage unit 42 is also changed from the sampling period Ts1 corresponding to the soil leveling operation to the sampling period Ts2 corresponding to the excavation operation. This completes the setting change of the sampling period.

  Since the operation when changing the setting of the collection time and the sampling cycle so as to correspond to the crushing operation or when returning to the one corresponding to the soil leveling is the same, the description thereof is omitted.

≪Setting by inputting numerical values for collection time and sampling period≫
When causing the excavator 1 to perform repetitive operations other than the above-described three types of operations, the following setting operation is performed to set the collection time and the sampling period.

  While the collection time setting screen 43 is displayed on the display device 36, the cross key 32 is operated, the free setting button 43d is selected, and the Enter key 34 is operated. As a result, the computer 37 is instructed to select the setting by numerical input of the collection time. In the computer 37, the arithmetic processing unit 39 functioning as a collection time setting unit and a display control unit controls the display unit 36 via the input / output interface 38, and makes the input field 43e ready for numerical input. . The operator operates the numeric keypad 33 of the input device 31 to input a numerical value in the input field 43e. After the input is completed, the operator operates the cross key 32 to select the confirmation button 43f and operates the Enter key 34. Thereby, the computer 37 is instructed to set the numerical value input in the input field 43e as the set value of the first and second collection times. In the computer 37, the numerical value input to the input field 43e by the arithmetic processing unit 39 is stored in the collection time storage area 42b of the second storage means 42 as the first and second collection times. This completes the collection time setting change.

  The operator who has completed the collection time setting change in this way operates the cross key 32, selects the sampling cycle setting button 47, and operates the Enter key 34. As a result, the computer 37 is instructed to switch the setting screen from the collection time setting screen 43 to the sampling cycle setting screen 44. In the computer 37 that has received the command, the arithmetic processing unit 39 functioning as a display control unit controls the display unit 36 via the input / output interface 38 and causes the display unit 36 to display the sampling period setting screen 44. During this time, the arithmetic processing unit 39 reads the sampling period setting program from the read-only storage means 40 and activates the function as the sampling period setting means.

  Next, the operator operates the cross key 32, selects the free setting button 44d, and operates the Enter key 34. As a result, the computer 37 is instructed to select the setting by the numerical input of the sampling period. In the computer 37, the arithmetic processing unit 39 functioning as a sampling period setting unit and a display control unit controls the display unit 36 via the input / output interface 38, and makes the input field 44e ready for numerical input. . The operator operates the numeric keypad 33 of the input device 31 to input a numerical value in the input field 44e. After the input is completed, the operator operates the cross key 32 to select the confirm button 44f and operates the Enter key 34. Thereby, the computer 37 is instructed to set the numerical value input in the input field 44e as the set value of the sampling period. In the computer 37, the numerical value input to the input field 44 e by the arithmetic processing unit 39 is stored as a sampling period in the sampling period storage area 42 c of the second storage unit 42. This completes the setting change of the sampling period.

≪Setting of supported data types≫
While the collection time setting screen 43 or the sampling cycle setting screen 44 is displayed on the display device 36, the cross key 32 is operated, the data type setting button 48 is selected, and the Enter key 34 is operated. Thereby, the computer 37 is instructed to switch the setting screen from the collection time setting screen 43 or the sampling cycle setting screen 44 to the data type setting screen 45. In the computer 37 that has received the command, the arithmetic processing unit 39 functioning as a display control unit controls the display device 36 via the input / output interface 38 and causes the display device 36 to display the data type setting screen 45. During this time, the arithmetic processing unit 39 reads the data type setting program from the read-only storage means 40 and activates the function as the data type setting means.

  After the data type setting screen 45 is displayed, the operator operates the cross key 32 to select an abnormality type for changing the type of the corresponding data from the abnormality list 45a, for example, “common rail pressure abnormality”, The Enter key 34 is operated. As a result, the computer 37 is instructed to change the type of the corresponding data of “common rail pressure abnormality”. In the computer 37 that has received the instruction, the arithmetic processing unit 39 functioning as a display control unit and a data type setting unit controls the display unit 36 via the input / output interface 38, and the corresponding data list 45b is displayed in the “common rail”. List the types of data corresponding to “abnormal pressure”, ie, “engine torque”, “engine speed”, “target engine speed”, “cooling water temperature”, ..., “atmospheric pressure”, etc. indicate. In the initial setting state, check marks are displayed in all of the check boxes 45d, 45e, 45f, 45g,.

  After the corresponding data list 45b is displayed, the operator operates the cross key 32 to select the type of corresponding data that is considered unnecessary at that time, for example, “target engine speed”, “cooling water temperature”, etc. The Enter key 34 is operated. As a result, the computer 37 is instructed not to select “target engine speed” or “cooling water temperature” as corresponding data. In the computer 37 that has received the command, it is assumed that the arithmetic processing unit 39 functioning as the data type setting unit has not selected “target engine speed” or “cooling water temperature” as the corresponding data, and the second storage unit 42 is stored in the data type storage area 42d. Further, the arithmetic processing unit 39 functioning as a display control unit controls the display device 36 via the input / output interface 38, and removes the check mark from the check boxes 45f and 45g as shown in FIG. This completes the change of the corresponding data type setting for “common rail pressure abnormality”.

  If it is necessary to change the type of data other than “common rail pressure abnormality”, the setting is changed by the same operation as in the case of “common rail pressure abnormality” described above.

≪Data collection≫
After setting the collection time, sampling period, and corresponding data type as described above, the operator operates the excavator 1 to perform excavation work.

  During the excavation work, the engine controller 23 adds destination data indicating that the data is addressed to the information collection device 30 to data indicating the detection result by the engine control related sensor, and outputs the data to the electric signal line 29. The vehicle body controller 24 adds destination data indicating that the data is addressed to the information collecting device 30 to data indicating the detection result by the vehicle body control related sensor and outputs the data to the electric signal line 29.

  In the computer 37 of the information collecting device 30, the arithmetic processing device 39 functions as a data acquisition processing unit, a first storage processing unit, and an abnormality determination unit while the excavator 1 is in operation.

  Now, the sampling period Ts2 is stored in the sampling period storage area 42c of the second storage means 42 by the change in the setting of the sampling period described above. Therefore, the arithmetic processing unit 39 functioning as a data acquisition processing unit receives various data addressed to the information collecting device 30 from the engine controller 23 output to the electric signal line 29, and the information collecting device 30 from the vehicle body controller 24. Various data addressed to are intermittently acquired at the sampling period Ts2. The acquired data is stored in the first storage unit 41 by the arithmetic processing unit 39 functioning as the first storage processing unit. Every time data is stored in the first storage unit 41, the arithmetic processing unit 39 functioning as an abnormality determination unit determines whether the data indicates an abnormality.

  When the abnormality determination unit detects data indicating abnormality, the arithmetic processing unit 39 activates the function as the second storage processing unit. The arithmetic processing unit 39 functioning as the second storage processing unit reads the first and second collection times stored in the collection time storage area 42b of the second storage unit 42. Now, since the collection time storage area 42b is stored as the first and second collection times by the collection time setting change described above, the arithmetic processing unit 39 reads the time t2.

  Further, when it is determined that the abnormality type determination result by the abnormality determination unit is, for example, a common rail pressure abnormality, the arithmetic processing unit 39 functioning as the second storage processing unit stores the data type stored in the second storage unit 42. From the area 42d, the data selected as the type of data corresponding to the common rail pressure abnormality, that is, the engine torque, engine speed and atmospheric pressure set as described above are read.

  The arithmetic processing device 39 (second storage processing means) that has read the time t2 as the first and second collection times and the type of data corresponding to the common rail pressure abnormality is the acquisition time point when the data indicating the common rail pressure abnormality is acquired. The first time zone from the acquisition time point to the time point t2 and the second time zone from the acquisition time point to the time point after the time t2 are calculated. Of the data stored in the first storage means 41, any one of the data stored in the first storage means 41 in the first and second time zones and corresponding to the common rail pressure abnormality data. The data corresponding to 1 is extracted and stored in the extracted data storage area 42 a of the second storage means 42. This completes data collection for investigating the cause of common rail pressure abnormalities.

  According to the present embodiment (information collecting apparatus 30), the following effects can be obtained.

  In the present embodiment, the data stored in the second storage means 42 is only the data stored in the first storage means 41 in the first time zone and the second time zone. It is possible to sequentially replace data that is no longer possible to be stored in the second storage means 42 and new data that may be stored in the second storage means 42. That is, useless data stored in the volatile first storage unit 41 can be reduced. As a result, the storage capacity of the first storage means 41 can be reduced.

  For the same reason, waste of data stored in the non-volatile second storage means 42 can be eliminated.

  The work performed by the hydraulic excavator 1 is often composed of repetitive operations. Most of the data necessary for investigating the cause of the abnormality occurring during the repetitive operation can be obtained in one cycle of the repetitive operation. In the present embodiment, predetermined times for determining the lengths of the first and second time zones are used for predetermined types of repetitive operations performed by the excavator 1, such as soil leveling operation, excavation operation, and crushing operation. Since it can be selectively set by the collection time changing means almost the same as the time for any one half cycle, the data necessary for investigating the cause of the abnormality occurring during the repetitive operation can be efficiently obtained. Can be collected.

  The present embodiment includes sampling period setting means for changing a sampling period for determining a time interval for causing the data acquisition processing means to acquire data intermittently. The change of the sampling cycle by the sampling cycle means can be performed by selecting from sampling cycles Ts1, Ts2, and Ts3 previously associated with the soil leveling operation, excavation operation, and crushing operation. These sampling periods are set such that Ts1> Ts2> Ts3 so that the sampling period becomes longer as the repetitive operation with small fluctuations in load and operation speed, such as soil leveling operation, excavation operation, and crushing operation. That is, it is possible to eliminate the waste of acquiring data and storing it in the second storage means 42 at the same frequency as during repeated operations with large fluctuations in load and operation speed.

  In the present embodiment, the data corresponding to the type of data associated in advance with the type of abnormality is selected from the data stored in the first storage means 41 in the first time zone and the second time zone. The second storage processing unit is set so as to be stored in the second storage unit 42. Thereby, it is possible to eliminate the waste of storing data not related to the type of abnormality indicated in the data in the second storage means 42.

  The present embodiment includes a data type setting unit that enables a data type (corresponding data type) previously associated with an abnormality type to be selected and set from pre-registered types. ing. As a result, the types of correspondence data stored in the second storage means 42 can be limited.

  In the above-described embodiment (information collection device 30), the preset time for defining the first and second time zones, that is, the first and second collection times are set to 1/2 cycle of a predetermined type of repetitive operation. In this example, the time can be set to be substantially the same as the minute time, but the first and second acquisition times in the present invention are not limited to this, and are determined from multiples of the sampling period. May be.

  In the above-described embodiment, the setting is changed to the collection time and the sampling period by the operation of the input device 31, that is, by manual input. However, the present invention is not limited to this, and the engine control-related sensor and the vehicle body control-related sensor. Even if the arithmetic processing unit 39 automatically determines the repetitive operation of the excavator 1 at that time based on the data obtained from the above, and changes the collection time and sampling period based on the determination result Good.

  In the above-described embodiment, the data acquisition processing means acquires data according to the sampling period set by the sampling period setting means, whereby the time interval between the data stored in the second storage means 42 is determined. 2 Wasteful data stored in the storage means 42 can be reduced. The means for reducing useless data stored in the second storage means 42 is not limited to this. In place of the sampling period setting means, there is means capable of setting the time interval between the data stored in the second storage means 42 to be longer than the time interval between the data stored in the first storage means 41. That's fine.

  That is, the sampling cycle when the data acquisition processing unit acquires data is fixed to the sampling cycle Ts3 corresponding to the crushing operation in which the fluctuation of the load and the operation speed is the largest among the above-described three types of repetitive operations. A thinning interval storage area for storing the time interval between the data in the extracted data storage area 42a of the second storage means 42 is provided in the second storage means 42 instead of the sampling period storage area 42c, and the second storage processing means The second storage processing program is set so that data is stored in the extracted data storage area 42a according to the time interval stored in the interval storage area. Also, a thinning interval setting for causing the arithmetic processing unit 39 to function as a thinning interval setting means for changing the time interval stored in the thinning interval storage area to a time longer than the sampling period Ts3 in response to a command from the input device 31. The program is stored in the read-only storage means 40 instead of the sampling cycle setting program.

  When changing the setting of the time interval between the data stored in the second storage means 42, as in the case of changing the setting of the sampling period, the time interval Tm1 (= Ts1) associated with the latest soil leveling operation [= msec] selected from the time interval Tm2 (= Ts2) [msec] associated with the second slowest excavation operation and the time interval Tm3 (= Ts3) [msec] associated with the fastest crushing operation I will do it.

It is a figure which shows the hydraulic excavator which is an example of the construction machine with which one Embodiment of the information collection apparatus of the construction machine of this invention is applied. It is the schematic which shows a part of hydraulic drive unit which controls the various hydraulic actuators of the hydraulic shovel shown by FIG. It is a block diagram which shows one Embodiment of the information collection apparatus of the construction machine of this invention. It is a figure which shows the various operation keys with which the input apparatus shown in FIG. 3 is provided, and an example of the collection time setting screen displayed on the display apparatus. It is a figure which shows an example of the sampling period setting screen displayed on the display apparatus. It is a figure which shows an example of the data type setting screen displayed on the display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 14 Hydraulic drive device 23 Engine controller 24 Car body controller 30 Information collection device 31 Input device 36 Display device 37 Computer 38 Input / output interface 39 Arithmetic processing device 40 Read-only storage means 41 First storage means 42 Second storage means 42a Extraction Data storage area 42b Collection time storage area 42c Sampling cycle storage area 42d Data type storage area 43 Collection time setting screen 43a First radio button 43b Second radio button 43c Third radio button 43d Free setting button 43e Input field 43f Confirm button 44 Sampling Cycle setting screen 44a First radio button 44b Second radio button 44c Third radio button 44d Free setting button 44e Input field 44f Confirm button 45 Data type setting screen 45a Abnormality list 45b Corresponding data list 45c Cursor 45d to 45h Check box 46 Collection time setting button 47 Sampling cycle setting button 48 Data type setting button

Claims (8)

Volatile first storage means;
Non-volatile second storage means;
Data acquisition processing means for acquiring various data related to the control of the construction machine;
First storage processing means for storing data acquired by the data acquisition processing means in the first storage means;
An abnormality determination means for determining whether or not the data indicates abnormality every time the first storage processing means stores new data in the first storage means;
The data stored in the first storage means in the first time zone from the time when the data determined to be abnormal by the abnormality determination means to the time when the preset time is traced back, and A second storage processing unit for storing data stored in the first storage unit in a second time zone from the acquisition point to a point in time after a preset time;
Construction machine information collection, characterized in that the first storage means, the second storage means, the data acquisition processing means, the first storage processing means, the abnormality determination means and the second storage processing means are provided in the construction machine. apparatus. In the invention of claim 1,
Both the preset time that defines the length of the first time zone and the preset time that defines the length of the second time zone are a predetermined type of iteration performed by the construction machine. An information collecting apparatus for construction machinery, characterized in that it is set to be substantially the same as the time for half cycle of operation. In the invention of claim 1,
A construction machine information collecting apparatus comprising: a sampling period setting unit that changes a sampling period for determining a time interval for causing the data acquisition processing unit to intermittently acquire data. In the invention of claim 1,
Construction machine information comprising thinning processing means for making a time interval between data stored in the second storage means longer than a time interval between data stored in the first storage means Collection device. In the invention of claim 1,
The data acquisition processing means intermittently acquires the data for the preset time for determining the length of the first time zone and the preset time for determining the length of the second time zone. An information gathering device for construction machinery, comprising a multiple of a sampling period for determining a time interval for In the invention of claim 1,
And a collection time changing means for changing the preset time for determining the length of the first time zone and the preset time for determining the length of the second time zone. Information collection device for construction machinery. In the invention of claim 1,
From the data stored in the first storage means in the first time zone and the second time zone, data corresponding to the type of data previously associated with the type of abnormality is selected and stored in the second memory An information collecting apparatus for construction machines, wherein the second storage processing means is set so as to be stored in the means. In the invention of claim 7,
Construction machine information characterized by comprising data type setting means that allows a data type associated with an abnormal type in advance to be selected and set from pre-registered types Collection device.

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