JP2009284871A - Control system for working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control system for working machine enabling cost reduction by simplifying constitution through reduction of numbers of writable nonvolatile storage means. <P>SOLUTION: The control system for working machine comprises a plurality of control sections communicable with each other through a decentrally arranged data communication network TU, either of the plurality of control sections is set as an information management control section H1 provided with a writable nonvolatile storage means, the information management control section H1 is configured, after started by supplying power, to execute distribution processing of information for control management which transmits the information for control management stored in the storage means 50 to control sections H2 to H6 of storage objects through the communication network TU, each of the control sections H2 to H6, after started by supplying power, executes acquisition processing of information for control management which receives the information for control management transmitted from the control section H1 for information management. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, a plurality of control units capable of communicating with each other via communication means are distributed in each part of the machine, and the plurality of control parts are input information inputted by an information input means provided therein, and other controls. The present invention relates to a control device for a work machine that is configured to control the operation of a control target that it is in charge of based on control information and control management information communicated from a section.

  The control device for a work machine controls the operation of a control object that a plurality of control units are responsible for, but is not limited to input information and control input by information input means provided in one control unit. Various information such as information indicating the control state of the target may be used for control in another control unit, and such information is communicated from the one control unit to the other control unit as the control information. It is the structure transmitted by the means. Further, the control management information is used when the control unit executes the operation control of the control object that it is in charge of. Examples of the control management information include the following. That is, when the control unit includes an actuator as the control object that can freely move the operated body and a potentiometer type detection sensor that detects the operation position of the operated body, the controlled object operated by the actuator is used. There are fine adjustment data for adjusting individual differences in detection values of the detection sensor when the operating body is operated to a reference position.

  As a conventional example of such a control device for a work machine, a writable nonvolatile storage unit (EEPROM) that stores the control management information used in each control unit in each of the plurality of control units. ) Are provided separately (see, for example, Patent Document 1).

  In other words, the control management information such as the fine adjustment data as described above is generally measured in advance when the work machine is shipped from the factory and stored in the storage means. Even when a detection sensor, an actuator, or the like breaks down as a result of use, and maintenance work such as repair or replacement is performed, the measurement is performed again and stored in the storage unit. In view of this, the non-volatile storage means capable of writing the control management information so that the control management information can be stored in a rewritable state and in a state in which the stored information is not erased even when power supply is stopped. It is intended to memorize.

JP 2005-59773 A

  In the above-described conventional configuration, each of the plurality of control units is provided with a writable non-volatile storage means for storing the control management information, and each of the plurality of control units is responsible for itself. It is possible to control the operation of the controlled object in an appropriate state. However, as described above, since the storage means is provided for each of the plurality of control units, such writing is performed. There is a disadvantage that the number of possible non-volatile storage means is large and the overall configuration is complicated.

  An object of the present invention is to reduce the number of writable non-volatile storage means while each of a plurality of control units can control a control object that it is responsible for in an appropriate state. The object is to provide a control device for a work machine that can be simplified and reduced in cost.

In the control device for a work vehicle according to the present invention, a plurality of control units that can communicate with each other via a communication unit are distributed in each part of the machine, and the plurality of control units are input by an information input unit provided therein. Based on input information, control information communicated from other control units, and control management information. The first characteristic configuration is that any one of the plurality of control units is configured such that all the control units other than the self among the plurality of control units are storage target control units or all the control units other than the self Information including a writable non-volatile storage means for storing the control management information of the plurality of storage target control units and the control management information of itself as a control target control unit. As a control unit for management It is composed,
Control management information distribution processing for transmitting the control management information stored in the storage unit to the storage target control unit via the communication unit after the information management control unit is activated by power-on Is configured to run
Control management information acquisition processing for receiving the control management information about itself transmitted from the information management control unit via the communication unit after each of the storage target control units is activated by power-on. Is configured to perform.

  That is, any one of the plurality of control units includes, as an information management control unit, a writable nonvolatile storage unit that stores the control management information, and the storage unit Is a part of all the control units other than the control unit for information management among all the control units or all the control units other than the control unit for information management as a storage target control unit The control management information and the control management information of the control unit for information management are stored.

  Then, the control unit for information management transmits the control management information stored in the storage means to the storage target control unit after being activated by power-on, and each of the storage target control units is turned on by power-on. After the activation, the control management information about itself transmitted from the information management control unit via the communication means is received.

  That is, the control management information of the plurality of control units as the storage target control unit can be stored in the writable nonvolatile storage means provided in any one of the plurality of control units. It is not necessary to provide each of the control units with non-volatile storage means that can be written separately, and as a whole, the number of non-volatile storage means that can be written can be reduced as a whole. Moreover, since each of the storage target control units can acquire the control management information required by itself after being activated by power-on, the control target for which the storage target control unit is in charge using the acquired control management information. It becomes possible to control in an appropriate state.

  Therefore, according to the first characteristic configuration, each of the plurality of control units can control the operation of the controlled object that it is in charge of in an appropriate state, but the writable nonvolatile storage means By reducing the number, it is possible to provide a control device for a work machine that can simplify the configuration and reduce the cost.

According to a second feature configuration of the present invention, in addition to the first feature configuration, the control management information distribution is performed until the management set time elapses after the information management control unit is activated by power-on. And a control information communication process for transmitting and receiving the control information when the management set time elapses.
Each of the storage target control units executes the control management information acquisition process until the management set time elapses after activation by power-on, and when the management set time elapses, The control information communication process for transmitting and receiving the control information is configured to be executed.

  That is, the control management information distribution process is executed until the management set time elapses after the information management control unit is activated by power-on, and each of the storage target control units The control management information acquisition process is executed until the management set time elapses after starting up when the power is turned on. Therefore, the management setting is started after each control unit is started up when the power is turned on. The control management information can be concentrated and communicated until the time elapses, and after the set time for management has elapsed, each of the storage target control units has appropriately acquired the control management information. The control information communication process can be executed in a state.

  Therefore, the control management information can be centrally communicated using the time immediately after the power is turned on, and a control device for a work machine that can perform control processing satisfactorily as the entire device can be provided. It was.

The third feature configuration of the present invention includes a plurality of types of control management information as the control management information in addition to the second feature configuration,
In the control management information acquisition process, the storage target control unit uses a plurality of types of request information for requesting each of a plurality of types of control management information in a predetermined order and the order in which the order is first. When the information is received, it is configured to transmit in the form of transmitting the request information for the control management information of the next order type,
When the control unit for information management transmits a plurality of types of control management information in a predetermined order and the type of control management information with the first order as the control management information distribution process When any of the plurality of storage target control units does not transmit the request information for requesting the type of control management information, the control management information of the next type is transmitted in a form to be transmitted. It is in the point which is comprised.

  That is, when communicating a plurality of types of control management information, the storage target control unit first transmits request information for requesting the control management information of the type with the first order, and the information management control unit First, the control management information of the type with the earliest order is transmitted. When the storage target control unit receives the requested information, it transmits the request information for the next type of control management information. The information management control unit includes a plurality of storage target control units. When any of the above requests the type of control management information, the type of control management information is transmitted, and any of the plurality of storage target control units transmits the type of control management information. If the request information for requesting is not transmitted, the control management information of the next order type is transmitted.

  Then, by repeatedly performing such processing, when any storage target control unit has not received any type of control management information among the plurality of types of control management information, the information management This type of control management information is transmitted from the control unit, so that a plurality of storage target control units can receive the control management information requested by itself, and all the storage target control units Each type of control management information can be received.

  Therefore, according to the third characteristic configuration, it is possible to provide a control device for a work machine capable of reliably communicating each of a plurality of types of control management information to a plurality of storage target control units.

  In the fourth feature configuration of the present invention, in addition to the third feature configuration, each of the storage target control units does not receive the control management information of the type requested in the control management information acquisition process, The request information corresponding to the type of control management information is configured to be repeatedly transmitted every time a set unit time elapses.

  That is, if each of the storage target control units does not receive the requested type of control management information, the request information is repeatedly transmitted every time the set unit time elapses. Since it is possible to repeatedly determine for each set unit time what type of control management information the storage target control unit is requesting, multiple types of control management information can be assured with little risk of transmission omission. It becomes possible to transmit. As a result, the plurality of storage target control units can reliably receive each of the plurality of types of control management information.

  Therefore, according to the fourth feature configuration, it is possible for the information management control unit to reliably transmit a plurality of types of control management information, and the plurality of storage target control units each of the plurality of types of control management information. It is possible to provide a control device for a work machine that can reliably receive the signal.

  According to a fifth feature configuration of the present invention, in addition to any one of the second feature configuration to the fourth feature configuration, the storage target control unit includes a read-only storage unit that stores alternative control management information. If the control management information about itself transmitted from the information management control unit cannot be received even after the management set time has elapsed, the substitute information stored in the read-only storage means is stored. The point is that it is configured to control the operation of the controlled object that it is in charge of based on the control management information.

That is, when the storage target control unit cannot receive control management information about itself even after the management set time elapses, the alternative control stored in the read-only storage means provided in itself Since it is configured to control the operation of the control object that it is in charge of based on the management information, even if there is a normal abnormality such as failure of communication means or communication error, for example, storage object control Can avoid shifting to a state in which the operation of the controlled object for which it is in charge is controlled in a state where the control management information cannot be obtained, and the control object for which it is in charge based on the alternative control management information. The operation can be controlled.
In the case of the fine control data as an example of the control management information, the alternative control management information is an intermediate value in the range of variation due to individual differences for each of the plurality of work machines. The standard value may be used as control management information for replacement.

  Therefore, according to the fifth characteristic configuration, the control device for the work machine that enables the storage target control unit to perform the operation control of the control target that it is in charge of using the control management information even if there is a communication abnormality. I was able to provide.

According to a sixth feature configuration of the present invention, in addition to any one of the second feature configuration to the fourth feature configuration, a specific storage target control unit among the storage target control units stores the control management information about itself. Comprising a non-volatile storage means for the writable specific control unit to store,
The specific storage target control unit is configured to store the control management information about itself received by the control management information acquisition process in a nonvolatile storage unit for the specific control unit, and When the control management information transmitted from the information management control unit cannot be received even after the management set time has elapsed, it is stored in the non-volatile storage means for the specific control unit The point is that it is configured to control the operation of the controlled object that it is in charge of based on the control management information.

  That is, the specific storage target control unit stores the control management information about itself received by the control management information acquisition process in the nonvolatile storage unit for the specific control unit. After storing the control management information in this way, the control for self transmitted from the information management control unit even when the management set time elapses when the control management information acquisition process is performed thereafter. When the management information cannot be received, the operation of the control object that is in charge is controlled based on the control management information stored in the non-volatile storage means for the specific control unit. Even if there is a normal abnormality such as a failure of the means or a communication error, it is possible to appropriately control the operation of the controlled object that it is in charge of based on the control management information stored in the storage means Become.

  That is, the control unit in charge of control that is particularly important among the plurality of control units is set as a specific storage target control unit, and the control management information is stored in the nonvolatile storage unit for the specific control unit. Thus, the control management information can be redundantly stored in each of the nonvolatile storage means provided in the information management control unit and the nonvolatile storage means for the specific control unit, for example, When communication from the information management control unit cannot be performed due to a communication error or the like, appropriate control management information can be obtained by using the storage contents of the non-volatile storage means for the specific control unit. Thus, the operation control of the control object in charge of the self can be performed satisfactorily.

  Therefore, according to the sixth characteristic configuration, even when a communication abnormality occurs in the communication unit, the control management information is stored in the nonvolatile storage unit for the specific control unit provided in itself. As a result, it has become possible to provide a control device for a work machine capable of appropriately controlling the operation of the controlled object.

  According to a seventh feature configuration of the present invention, in addition to the sixth feature configuration, the specific storage target control unit includes a read-only storage unit that stores control control information for replacement, and is for the specific control unit. When the control management information about itself is not stored in the nonvolatile storage means, the control management information about the self transmitted from the information management control unit even if the management set time elapses Is not configured to control the operation of the controlled object that it is in charge of based on the substitute control management information stored in the read-only storage means.

  That is, the specific storage target control unit manages the information management even if the management set time elapses when the control management information about itself is not stored in the nonvolatile storage means for the specific control unit. When the control management information about itself cannot be received from the control unit for use, control of the operation of the control object in charge is controlled based on the replacement control management information stored in the read-only storage means. Since the management information for control about itself is not stored in the non-volatile storage means for the specific control unit, the communication means may fail or a communication error may occur. Even if there is an abnormality, it becomes possible to control the operation of the controlled object that it is in charge of based on the substitute control management information.

  Therefore, according to the seventh characteristic configuration, the specific storage target control unit stores the control management information in the nonvolatile storage unit for the specific control unit, and the control management information in the read-only storage unit. A work machine capable of controlling the operation of the controlled object even more reliably even when a communication abnormality occurs in the communication means by taking a double safety measure of storing. It has come to be able to provide a control device.

  The eighth characteristic configuration of the present invention is that, in addition to any of the first characteristic configuration to the seventh characteristic configuration, the control management information includes information on a model type of the work machine.

That is, since the control management information includes information on the model type of the work machine, each of the plurality of storage target control units can perform appropriate control in accordance with the model type of the work machine to be mounted. It becomes possible.
In other words, the content of the control executed by the multiple control units provided in the work machine is the same regardless of the model type, and the additional content added to the basic content. There are many cases where various control contents differ depending on the model type. Therefore, by providing a plurality of accompanying control contents so that a plurality of control units can handle a plurality of model types of work machines, information on the model types is stored in a nonvolatile storage means. When the model type information is given, control corresponding to the model type can be performed.

  In addition, when storing the model type information as the control information for replacement, only the information corresponding to the basic control content as described above is stored, so that any model type can be stored. It can be shared with work machines.

  Therefore, according to the 8th characteristic structure, it came to be able to provide the control apparatus for working machines which can aim at cost reduction by sharing and using with respect to several types of working machines from which a model type differs mutually. .

According to a ninth feature configuration of the present invention, in addition to any one of the first feature configuration to the eighth feature configuration, each part of the machine can move and operate the operated body as the control target, and the operated body A potentiometer type detection sensor as the information input means for detecting the operation position of
The detection sensor when the storage target control unit is configured to control the operation of the actuator based on detection information of the detection sensor, and the operated object is operated to a reference position by the actuator. The fine adjustment data for adjusting the individual difference of the detected values is communicated as the control management information to the information management control unit.

  That is, as the control management information, fine adjustment data for adjusting the individual difference of the detection value of the detection sensor when the operated object is operated to the reference position by the actuator is stored in the nonvolatile storage means. The storage target control unit uses the fine adjustment data communicated from the control unit for information management to perform the operation of moving the target object using the actuator, as described above. It can be detected by the detection sensor as an appropriate value considering individual differences.

  Therefore, according to the ninth characteristic configuration, it is possible to provide a control device for a work machine that enables the storage target control unit to perform operation control by the actuator based on the detection information of the detection sensor in an appropriate state.

  According to a tenth feature configuration of the present invention, in addition to any of the ninth feature configurations, the storage target control unit is configured to be able to execute a fine adjustment data acquisition process for updating the fine adjustment data. When the fine adjustment data for update is acquired in the adjustment data acquisition process, the fine adjustment data is communicated to the information management controller.

  That is, the storage target control unit can acquire the fine adjustment data for update by executing the fine adjustment data acquisition process. For example, when a detection sensor for detecting control management information has failed and repaired or replaced, new fine adjustment data corresponding to the detection state after the repaired or replaced is obtained. It can be obtained. When new fine adjustment data is acquired in this fine adjustment data acquisition process, the fine adjustment data is stored in the writable nonvolatile storage means by communicating with the information management control unit. be able to. After the new fine adjustment data is stored in this way, the storage target control unit can receive the new fine adjustment data from the information management control unit by communication.

  Therefore, according to the tenth feature configuration, even when the detection sensor or the like has failed and repaired or exchanged, the storage target control unit is appropriately controlled by the information management control unit. It has become possible to provide a control device for a work machine that can receive adjustment data by communication and can appropriately control the operation of the actuator based on the detection information of the detection sensor.

According to an eleventh characteristic configuration of the present invention, in addition to any one of the first characteristic configuration to the tenth characteristic configuration, an engine control unit that controls an operation of an engine mounted on a work vehicle that is a work machine includes the information management unit And a control unit different from the storage target control unit,
The information management control unit is configured to communicate control switching command information, target rotational speed information, and accelerator operation amount information as the control information to the engine control unit,
A state in which the engine control unit executes isochronous control for maintaining the output rotation speed of the engine at the target rotation speed based on the control switching command information communicated from the information management control unit; It is possible to switch to a state in which droop control for adjusting the output rotation speed of the engine to a speed corresponding to the accelerator operation amount is executed.

  That is, control switching command information, target rotational speed information, and accelerator operation amount information are communicated from the information management control unit to the engine control unit. Then, the engine control unit is switched between the state of executing the isochronous control and the state of executing the droop control based on the control switching command information.

  In the state where the isochronous control is executed, the engine control unit controls the operation of the engine so that the output rotation speed of the engine is maintained at the target rotation speed communicated from the control unit for information management. By maintaining the engine at the target rotational speed in this manner, when the work device is driven and the work is performed, the work can be favorably performed at a stable rotational speed. For example, when applied to a combine as a work machine, the cutting operation can be performed satisfactorily at a stable rotational speed.

  In the state in which the droop control is executed, the engine control unit controls the operation of the engine so that the output rotation speed of the engine becomes a speed corresponding to the accelerator operation amount communicated from the control unit for information management. In this way, the speed corresponding to the accelerator operation amount makes it possible to operate the engine at a rotational speed corresponding to the intention of the operator. For example, when applied to a combine as a work machine, it is possible to travel and travel at an appropriate rotational speed adjusted by manual operation when traveling on the road.

  Therefore, according to the eleventh characteristic configuration, it has become possible to provide a control device for a work machine that can control the operation of the engine so as to achieve an appropriate rotation speed according to the use state of the work machine.

Hereinafter, a case where an embodiment of the present invention is applied to a combine as a work vehicle as an example of a work machine will be described with reference to the drawings.
As shown in FIG. 1, the combine can be swung up and down around the horizontal axis P1 by a cutting lift cylinder CY1 as an actuator at the front of a machine body V having a pair of left and right crawler type traveling devices 1R and 1L. The cutting part 2 is attached in the state, and behind the cutting part 2, the control part 3, the threshing part 4 for threshing and selecting the harvested cereals, the grain tank 5 for storing the grain supplied from the threshing part 4, An unloader 6 for discharging the grain for discharging the grain in the grain tank 5, a binding device 7 for binding the threshing waste straws by a predetermined amount and releasing them outside the apparatus are mounted.

  The cutting part 2 includes a weeding tool 8 attached to the tip part, a culm raising device 9, a cutting blade 10 that cuts the stock of the culm that has been caused, and a threshing part that receives the cutting cereal meal on the tip side. 4 is provided. A potentiometer-type cutting lift position sensor S1 is provided that detects the lifting position of the cutting part 2 with respect to the machine body V based on the swing angle around the horizontal axis P1.

  In addition, as shown in FIG. 10, the cutting unit 2 is turned on when a grounding type cutting height sensor S2 that detects the height of the cutting unit 2 from the ground and the culm is touched, and the cutting operation is being performed. This is provided with a stock sensor S3 for detecting this, and the control unit 3 is provided with a cutting height setting device 12 for setting a target cutting height. Information on the height of the cutting unit 2 from the ground detected by the cutting height sensor S2 is used for cutting height control when cutting the culm. That is, when the cutting height control is started on the condition that the raising / lowering position of the cutting unit 2 with respect to the machine body V is lower than the set position, the detection value of the cutting height sensor S2 is the target cutting height set by the cutting height setting unit 12 The cutting lift cylinder C1 is controlled so as to be the same.

  As shown in FIG. 1, the steering unit 3 is a cross-operating type that is configured to serve both as a cutting lift lever for manually lifting and lowering the cutting unit 2 and a steering lever for manually turning the traveling machine body V to the left and right. A cutting height steering lever 13 is provided. When the cutting height steering lever 13 is operated to swing backward, the raising switch 14 (see FIG. 10) is turned on, the cutting unit 2 is raised, and swinging operation is performed forward. Then, the lowering switch 15 (see FIG. 10) is turned on so that the cutting unit 2 is lowered.

  As shown in FIG. 3, the transport device 11 supports the transport unit 11a located on the transport end side so as to be swingable around the longitudinal axis, and can swing freely by a handling depth motor M1 as an actuator. Is provided. In addition, the tip side side culm sensor S4 and the stock side side culm sensor S5 for detecting the position of the culm tip of the transported culm that is clamped by the transporting device 11 are moved in the cocoon length direction. The threshing part is changed by changing the delivery position to the threshing part 4 by the transport part 11a in the cocoon length direction so that the tip of the transported grain culm is positioned between these two sensors S4 and S5. It is comprised so that the handling depth in 4 can be adjusted and the handling depth in the threshing part 4 can be maintained in an appropriate state. Further, a handling depth position sensor S6 (see FIG. 10) configured as a rotary potentiometer that detects a handling depth adjustment position by the handling depth motor M1 is provided.

  As shown in FIG. 4, a driving sprocket 17 is rotatably supported on the left traveling device 1 </ b> L on the front end side of the main frame 16 that constitutes the vehicle body V in the front-rear orientation, and a plurality of idler wheels 18. Are arranged in the front-rear direction, and a track frame 20 supporting a tension ring body 19 for tensioning the crawler belt B at the rear end portion is constituted by a front bell crank 21a and a rear bell crank 21b. The main frame 16 is pivotally connected to be movable up and down. That is, the lower end of the front bell crank 21a is pivotally connected to the front portion of the track frame 20, and the lower end of the rear bell crank 21b is pivotally connected to the rear portion of the track frame 20. . On the other hand, cylinder rods of a pair of hydraulic cylinders CY2 and CY3 whose cylinder main body side is pivotally connected to the main frame 16 are linked and connected to the upper end portions of the front and rear bell cranks 21a and 21b, respectively. On the other hand, the right traveling device 1R has the same configuration.

  Accordingly, the left front cylinder CY2 that moves up and down the front side of the left traveling device 1L, the left rear cylinder CY3 that moves up and down the rear side of the left traveling device 1L, and the right front that moves up and down the front side of the right traveling device 1R. Four hydraulic cylinders, a cylinder CY4 and a left rear cylinder CY5 that moves up and down on the rear side of the right traveling device 1R, are provided as actuators. By operating these four hydraulic cylinders CY2 to CY5 to expand and contract, The front-rear inclination angle and the left-right inclination angle can be changed. And four potentiometer type stroke sensors S7 to 10 are provided for detecting the amount of lifting operation by the cylinders CY2 to CY5, respectively.

  That is, as shown in FIGS. 4 and 5, for example, when the left front cylinder CY2 and the right front cylinder CY4 are stopped and the left rear cylinder CY3 and the right rear cylinder CY5 are expanded and contracted at the same time, the longitudinal inclination angle with respect to the ground contact surface of the aircraft changes. Will do. In addition, as shown in FIG. 6, when the right front cylinder CY4 and the right rear cylinder CY5 are stopped and the left front cylinder CY2 and the left rear cylinder CY3 are simultaneously expanded and contracted, the right / left inclination angle with respect to the ground contact surface of the airframe changes. .

  As shown in FIG. 10, the airframe V includes a left / right inclination angle sensor S11 that detects the inclination of the airframe in the left-right direction with respect to the horizontal plane, and a front / rear inclination angle sensor that detects the inclination of the airframe in the front-rear direction with respect to the horizontal plane. S12 is provided, and the control operation panel unit 22 provided in the control unit 3 includes a posture control on / off switch SW1 for commanding execution and stop of the posture control, and a horizontal return switch for setting the target inclination angle to a horizontal state. SW2, a cutting control on / off switch SW15 for commanding execution and stop of cutting height control, four manual operation switches having a function of changing the attitude of the aircraft by manual operation and a function of changing a target inclination angle during attitude control That is, a front raising switch SW3, a rear raising switch SW4, a left raising switch SW5, a right raising switch SW6, and the like are provided.

  As shown in FIG. 2, the threshing unit 4 includes a handling chamber 24 that accommodates the handling cylinder 23, a feed chain 25 that conveys the cereals supplied from the cutting unit 2, a thimble 26, and a swing sorting plate 27. The apparatus 28, the first port 29 for grain collection | recovery, the 2nd port 30 for collect | recovering the mixture of a grain and a sawdust, etc. are provided. Of the processed products threshed in the handling chamber 24, those that have been made into single grains leak into the sorting device 28 from the receiving net 31 provided in the lower part of the handling chamber 24, and other processed products are received in the receiving net 31. It is configured to drop onto the sorting device 28 from the rear end portion.

  The swing sorting plate 27 of the sorting device 28 is located above the tow 26 and is moved to the rear side of the machine to transfer the processed material leaked from the handling chamber 24 to the rear side of the machine body. A chaff sheave 33 that performs rough sorting of the material and a grain sheave 34 that is positioned below the chaff sheave 33 and that performs fine sorting of the processed material are provided. The chaff sheave 33 is composed of a plurality of band plate-like members juxtaposed in the workpiece transfer direction, and the interval (chaff opening) between the adjacent band plate-like members is changed by a chaff opening adjusting motor M2 as an actuator. It is configured as follows. A potentiometer-based chaff opening sensor S13 (see FIG. 10) for detecting the chaff opening is provided.

  The tow 26 is for blowing off the dust on the swing sorting plate 27. The opening degree of the tow 26 is controlled by opening / closing the rear fan case cover 26a with the tom wind power adjusting motor M3 as an actuator. The wind force (called tomi wind force) exerted on the processed material on the swing sorting plate 27 is changed so that the wind force toward the front side becomes smaller as the value increases, and the opening state of the fan case cover 26a is detected to detect the tow wind force. A potentiometer-based tomi wind sensor S14 (see FIG. 10) is provided. Further, a sheave sensor S15 for detecting the layer thickness of the processed material on the swing sorting plate 27 is provided.

  As shown in FIG. 1, the unloader 6 is provided with a discharge port 6a in a downward posture at the distal end, and the proximal end is attached to the support 35 in a state in which it can be swung up and down by the unloader lifting cylinder CY6 around the horizontal axis P2. The support portion 35 is supported by the airframe V in a state where the support portion 35 can be swung around the longitudinal axis Y by an unloader turning motor M4. And the unloader position sensor S16 comprised with the potentiometer which detects the turning position of the support part 35, and the unloader upper limit sensor S17 which detects that the unloader 6 exists in an upper limit position are provided (refer FIG. 10).

  Further, as shown in FIG. 10, the unloader operation panel 36 provided in the control unit 3 has an overhang switch SW7 for moving the unloader 6 to the discharge position protruding outward, and the unloader 6 is moved to the home position. Retract switch SW8 to be turned, right turn command switch SW9 to manually turn right, left turn command switch SW10 to turn left manually, lift command switch SW11 to manually turn upward, switch down manually There are provided a lowering command switch SW12 for commanding, a fir discharging switch SW13 for commanding on / off of the fir discharging clutch, and the like.

  Next, the power transmission mechanism will be briefly described. As shown in FIG. 9, the output of the engine E is transmitted to the threshing unit 4 via the threshing clutch 37 and to the mission unit 39 via the main clutch 38. Reportedly. The transmission unit 39 is provided with a continuously variable transmission 41 (HST) that is shifted in accordance with the operation of the transmission operating tool 40, and is in a gentle turning state in which one traveling device is driven at a lower speed than the other traveling device. A well-known turning state switching mechanism 42 is provided that can be switched between a brake turning state in which one traveling device 1 is stopped and a reverse turning state in which one traveling device is driven in the opposite direction to the other traveling device. It has been. Although the turning state switching mechanism 42 will not be described in detail, a hydraulic clutch for slow turning for switching to a slow turning state, a hydraulic clutch for turning a brake for switching to a brake turning state, and a reverse rotation for switching to a reverse turning state. A hydraulic clutch for turning is provided, and a hydraulic operation unit 43 having a plurality of hydraulic control valves for switching the pressure oil state for each of the hydraulic clutches is provided. Further, a threshing clutch sensor S18 (see FIG. 10) for detecting the on / off state of the threshing clutch 37 is provided.

  The switching operation of the turning state switching mechanism 42 is configured to be performed by a left / right swinging operation of a cutting height steering lever 13 provided in the control unit 3. That is, a potentiometer-type steering lever sensor S19 (see FIG. 10) that detects the amount of horizontal swing operation of the cutting height steering lever 13 is provided, and the turning state switching mechanism 42 is operated by operating the cutting height steering lever 13. Are configured to switch.

  As shown in FIGS. 7 and 8, the bundling device 7 includes a bundling machine 44 that bundles and bundles a predetermined amount of waste straw discharged from the threshing unit 4 by the waste straw conveying device 7A, and a stock end of the waste straw. A stock aligning mechanism 45 that strikes and aligns, a screw feed type position adjusting mechanism 46 that can change and adjust the position of the waste straw of the stock aligning mechanism 45 in the cocoon length direction, and the stock end position of the waste straw relative to the binding machine 44 And a pair of waste wall detection sensors S20 and S21 for detecting whether or not they are in an appropriate position. The bundling device 7 includes a potentiometer for detecting the position of the stock sorting mechanism 45 in the waste wall length direction. Although not described in detail, a stock end position detection sensor S22 of the type is provided, but based on the information of this stock position detection sensor S22, the transport end position of the waste straw transporter 7A is adjusted so that the binding position is an appropriate position. It is configured to change There.

A plurality of control units that can communicate with each other via the communication unit TU are distributed in each part of the machine, and the plurality of control units are input information that is input by an information input unit provided therein, and other control units. Based on the control information and control management information communicated from each other, it is configured to control the operation of the controlled object that it is in charge of.
For example, a main control unit H1 for controlling the operation of the cutting lift cylinder C1 and the like is provided in the vicinity of the cutting unit 2, and a main unit control unit H2 for controlling the operation of the unloader 6 is provided in the vicinity of the glen tank 5 to control the attitude. An attitude control unit H3 is provided in the vicinity of the hydraulic cylinder arrangement location, and a threshing control unit H4 for controlling the threshing unit 3 is provided in a location where the threshing unit 3 is provided. In other words, a plurality of control units are distributedly deployed in the vicinity of the control target that the user is in charge of.

  Specifically, as shown in FIG. 10, as a plurality of control units H, a main control unit H1, a main unit control unit H2, a posture control unit H3, a threshing control unit H4, a travel control unit H5, a binding control unit H6, An engine control unit H7 is provided, and each control unit includes a microcomputer, and although not illustrated, a communication device provided corresponding to each control unit, and its communication Information is communicable through a communication means TU in a CAN (Controller Area Network) format, which includes a communication bus line 47 connected to the apparatus. In addition, the control operation panel 22, the unloader operation panel 36, and the display panel 48 for displaying various information provided in the control unit 3 can communicate information via the communication means TU. Is provided.

  The communication data communicated via the communication means TU will be briefly described. As the communication data, the other party address information for specifying the other party to be transmitted and the control contents to be processed are shown. Data of a plurality of bit strings including control content information and specific control data (numerical data or the like).

Hereinafter, each control unit will be described.
In the main control unit H1, the cutting height control on / off switch SW15 provided in the control operation panel unit 22 is turned on and the height of the cutting unit 2 detected by the cutting lift position sensor S1 is higher than the set height. The cutting height control is executed with the lowering position as a starting condition. That is, the operation of the cutting lift cylinder C1 as the control target is controlled so that the cutting height of the cutting unit 2 is maintained at the target set height based on the information of the cutting height sensor S2 as information input means. Further, the operation of the cutting lift cylinder C1 is controlled so that the cutting unit 2 is raised when the raising switch 14 is turned on, and the cutting unit 2 is lowered when the lowering switch 15 is turned on. As shown in FIG. 10, the detection information of the ascending switch 14 and the descending switch 15 is configured to be input to the main unit control unit H2, and the detected information is communicated to the main control unit H1 as the control information. Will be.

  The machine control unit H2 performs the depth control using the automatic operation depth switch SW14 provided in the control operation panel unit 22 being turned on and the stock sensor S3 being turned on. It is configured. That is, based on the information of the tip side culm sensor S4 and the stock source side culm sensor S5 as information input means, the proper state that the point position of the transported culm is located between the sensors S4, S5 Then, the depth of motor M1 as an actuator is controlled as a control target.

  Moreover, this machine control part H2 is comprised so that the operation control of the unloader 6 may be performed besides the said handling depth control. That is, the operation of the unloader 6 corresponding to the operation command of each operation switch provided in the unloader operation panel unit 36, for example, the turning operation, the raising / lowering operation, the storing operation and the like are performed. That is, based on the detection information of the unloader position sensor S16 and the unloader upper limit sensor S17 as information input means, the unloader lifting cylinder CY6 and the unloader turning motor M4 as the actuator for moving the unloader 6 as the operated body are controlled. The operation will be controlled.

  When the posture control unit H3 is instructed to perform posture control by the posture control on / off switch SW1 provided in the control operation panel unit 22 being operated to the on state, the posture control unit H3 tilts right and left as information input means. Based on the information of the angle sensor S11 and the front / rear inclination angle sensor S12, four actuators that change the posture of the body V as the operated body so that the front / rear inclination angle and the left / right inclination angle of the body V become the target inclination angles, respectively. Posture control is performed to control the operation with the hydraulic cylinders C2 to C5 as control targets. In addition, if any of the manual operation switches SW3 to SW6 is operated while the attitude control on / off switch SW1 is off, any of the hydraulic cylinders is operated so that the attitude changes in the commanded direction during the operation. If any of the manual operation switches SW3 to SW6 is operated while posture control is being executed, the posture changes in the commanded direction during the operation, but the posture when the operation is stopped Can be newly set as the target inclination angle.

  The threshing control unit H4 is configured to execute the threshing control on condition that the threshing clutch 37 is turned on and the stock sensor S3 is turned on. As the threshing control, the sheave sensor S15 as information input means. Based on this information, the operation is controlled with the chaff opening adjustment motor M2 and the tomi wind power adjustment motor M3 as actuators as control objects so as to have an appropriate layer thickness. The detection information of the stock source sensor S3 is input to the main control unit H1 as shown in FIG. 10, and the detection information is communicated to the threshing control unit H4 as control information.

  The traveling control unit H5 switches the turning state switching mechanism 42 to a straight traveling state when a straight advance is commanded based on information from the steering lever sensor S19 as an information input unit, and turns a turning state switching mechanism when a turn is commanded. The hydraulic control unit that is a control target is configured to switch the turning state switching mechanism 42 so that the turning force corresponds to the turning state that is commanded based on the information of the steering lever sensor 13. The operation of 43 is controlled.

  The bundling control unit H6 is in a state where the stock end position of the waste straw is in an appropriate position, that is, only the waste straw detection sensor S20 located on the side where the culm exists is out of the pair of waste straw detection sensors S20 and S21. Bundling control for controlling the position adjusting mechanism 46 so as to detect the presence of the straw is executed. Control for changing and adjusting the conveyance end position of the waste straw conveying device 7A based on the information of the stock alignment position detection sensor S22 is also performed.

  The engine control unit H7 is configured to communicate control switching command information, target rotational speed information, and accelerator operation amount information as the control information from the main control unit H1, and based on the control switching command information. Thus, it is possible to switch between a state in which isochronous control for maintaining the output rotational speed of the engine E at the target rotational speed is executed and a state in which droop control for adjusting the output rotational speed of the engine E to a speed corresponding to the accelerator operation amount is executed. It is configured. The engine control unit H7 does not communicate control management information such as model type data and fine adjustment data, which will be described later, from the main control unit H1, and the information is stored in an engine storage means (not shown). The configuration is memorized.

  In other words, the detection information of the potentiometer type accelerator setting device 49 and the detection information of the threshing clutch sensor S18, which are changed and set by manual operation, are input to the main control unit H1, and these information is used for control. It is configured to communicate to the engine control unit H7 as information, and when the threshing clutch sensor S18 detects the clutch engaged state, it commands the state to execute the isochronous control, and the threshing clutch sensor S18 detects the clutch disengaged state. If so, a command to execute the droop control is instructed.

  Detection information of the rotation speed sensor S23 that detects the rotation speed of the engine E is input to the engine control unit H7, and a state for executing isochronous control is commanded as control switching command information communicated from the main control unit H1. Then, the operation of the engine E is controlled so that the output rotation speed of the engine E is maintained at a target rotation speed set to a value suitable for work in advance. Specifically, the fuel supply amount by the electronic governor 55 is adjusted and controlled. Further, when a command to execute the droop control is commanded as control switching command information, the fuel supply amount by the electronic governor 55 is adjusted so that the output rotation speed of the engine E is adjusted to a speed corresponding to the accelerator operation amount. Control.

  As control information communicated from another control unit, in addition to the configuration in which the information of the stock source sensor S3 input to the main control unit H1 as described above is communicated to the threshing control unit H4 via the communication means. Some also communicate as information for the other controller to control the control state of one controller. For example, the attitude control unit H3 executes attitude control so that the left / right tilt angle of the aircraft is set to the target tilt angle, but the target tilt angle in the left / right direction of the aircraft is changed by manual operation and set for the horizontal attitude. When a target inclination angle inclined at any angle is set, the information is communicated as control information to the main control unit H1, and the main control unit H1 sets the target cutting height. The target cutting height correction process for correcting the value to a value higher by a set amount than the value set by the device 12 is executed. In addition to such information, various information is communicated as control information.

  And the said main control part H1 is a part of all the control parts other than self among a plurality of control parts, that is, this machine control part H2, posture control part H3, threshing control part H4, Non-volatile memory 50 as writable non-volatile storage means for storing the control management information of each control unit and its own control management information, with travel control unit H5 and bundling control unit H6 as storage target control units. After the main control unit H1 is activated by turning on the power, the control management information stored in the nonvolatile memory 50 is stored in the nonvolatile memory 50 via the communication unit TU. It is configured to execute a control management information distribution process to be transmitted to the storage target control unit, and after each of the storage target control units is activated by power-on, the main control unit H1 communicates with the communication means T. And is configured to perform said control to receive the management information control management information obtaining process about the self transmitted through. The nonvolatile memory 50 is configured by an electrically writable and erasable EEPROM, a flash memory, or the like.

  The control management information stored in the non-volatile memory 50 includes model type data which is information about the model type, and a detection sensor when the operated object operated by the actuator is operated to the reference position. There are fine adjustment data, which is information for adjusting the individual difference of the detected values, and control setting data such as the width of the control dead zone at the time of execution of the preset control.

  In other words, the main control unit H1 stores the detection value of the cutting lift position sensor S1 when the cutting unit 2 is raised to the upper limit position in the nonvolatile memory 50 as fine adjustment data. Further, the control dead zone width information is stored in the nonvolatile memory 50 as the control setting data.

  As an example of the fine adjustment data, the machine control unit H2 operates the handling depth motor M1 to operate the conveyance device 11 as the operated body to the deepest handling position and the shallowest handling position. The detection value of the position sensor S6, the detection value of the unloader position sensor S16 when the unloader 6 is turned to the home position, and the like are communicated to the main control unit H1 and stored in the nonvolatile memory 50.

  The posture control unit H3 communicates, as an example of fine adjustment data, the detection values of the stroke sensors S7 to S10 when the cylinders to be controlled are operated to the maximum ascending position and the maximum descending position to the main controller H1. Thus, it is configured to be stored in the nonvolatile memory 50. In addition, as control setting data, information on the width of the control dead zone when performing attitude control is communicated to the main control unit H1 and stored in the nonvolatile memory 50.

  As an example of the fine adjustment data, the threshing control unit H4 communicates the detection value of the chaff opening sensor S13 in each state operated to the fully open position and the fully closed position with the chaff sheave 33 as a reference position to the main control unit H1. The configuration is such that it is stored in the nonvolatile memory 50.

  As an example of the fine adjustment data, the traveling control unit H5 detects the value detected by the steering lever sensor S19 when the cutting height steering lever 13 is operated as the reference position to the maximum turning operation position and at the position corresponding to the straight traveling state. Is stored in the nonvolatile memory 50 by communicating with the main control unit H1. As the control setting data, information on the width of the control dead zone in the neutral state in which the straight traveling state is maintained is communicated to the main control unit H1 and stored in the nonvolatile memory 50.

  As an example of fine adjustment data, the bundling control unit H6 performs a main control on the detection value of the stock alignment position detection sensor S22 when the stock alignment mechanism 45 is located at both end portions in the cocoon length direction of the waste straw as a reference position. It is configured to communicate with the part H1 and store it in the nonvolatile memory 50.

  In further description, the storage target control unit (H2 to H6) is configured to be able to execute a fine adjustment data acquisition process for updating the fine adjustment data. When such fine adjustment data is acquired, the fine adjustment data is communicated to the information management controller. That is, the storage target control unit (H2 to H6) is used in the case where any of the above-described various detection sensors as the information input unit fails and repair / replacement is performed as the combine is used. ) Performs a fine adjustment data acquisition process to newly acquire fine adjustment data.

  Although not shown, when the fine adjustment data acquisition process is described, the storage target control unit performs fine adjustment data by a special input operation such as turning on the power while operating a maintenance switch or the like. Switch to the acquisition control mode. Then, by operating the actuators (hydraulic cylinder, electric motor, etc.) so that the fine adjustment detection is activated in the control mode, the object to be operated is moved using the new detection sensor that has been repaired and replaced. The detection value when operating to the reference position is obtained and acquired as fine adjustment data for update. When the fine adjustment data for update is acquired in this way, the fine adjustment data for update is communicated to the main control unit H1 and stored in the nonvolatile memory 50.

  As described above, the storage target control units (H2 to H6) communicate fine adjustment data to the main control unit H1 and store them in the non-volatile memory 50, but communication by the communication means TU is not performed appropriately. In some cases, fine adjustment data may not be acquired. Accordingly, a read-only storage means for storing alternative control management information is provided, and the self control transmitted from the main control unit H1 even after the set time for management has elapsed since the power was turned on and started. When the control management information cannot be received, it is configured to control the operation of the control object that it is in charge of based on the alternative control management information stored in the read-only storage means.

  When not only the storage target control units (H2 to H6) but also the main control unit H1 is provided with read-only storage means for storing alternative control management information and cannot be obtained from the nonvolatile memory 50 The operation of the controlled object that the person is in charge of is controlled based on the substitute control management information stored in the read-only storage means.

  The read-only memory means is configured to use a read-only memory (ROM) 52 in which a control program for controlling the operation of the controlled object that is in charge is stored. In advance, control management information about itself is written and stored. As the read-only memory 52, a mask ROM, a PROM, or the like is used.

Incidentally, as the fine adjustment data as described above, the various types of information described above are merely examples, and are not limited to these types of information. In addition, various types of information may be stored. Further, the fine adjustment data as described above is stored in advance at the time of shipment from the factory, but is also appropriately performed when a maintenance operation such as repair or replacement of parts is performed. That is, when the storage target control unit (H2 to H6) acquires the fine adjustment data for update in the above-described fine adjustment data acquisition process, the storage target control unit (H2 to H6) communicates the fine adjustment data to the main control unit H1 to store the non-volatile memory. 50.
The model type data is stored in advance in the nonvolatile memory 50 before the combine is shipped from the factory.

  Of the control units, the travel control unit H5 corresponds to a specific storage target control unit. For example, if the detected value of the operation position corresponding to the cutting height steering lever 13 corresponding to the straight traveling state is not stored as an appropriate value corresponding to each aircraft, the cutting height steering lever 13 may be operated to the straight traveling state. There is a case where the vehicle cannot travel straight and cannot travel properly. Therefore, the traveling control unit H5 is configured to include a nonvolatile memory 51 as a nonvolatile storage unit for a writable specific control unit that stores control management information about itself. In addition, the control management information transmitted from the main control unit H1 is stored. The memory 51 is composed of an electrically writable / erasable EEPROM or flash memory.

  From the time when the main control unit H1 is activated by power-on until the set time for management (for example, 1.5 seconds) elapses, it is stored in the nonvolatile memory 50 via the communication means TU. Control information for executing control management information distribution processing for transmitting the control management information to the storage target control unit, and transmitting / receiving the control information to another control unit when the management set time elapses The communication process is executed. In addition, each of the storage target control units (H2 to H6) is transmitted from the main control unit H1 via the communication unit TU until the management set time elapses after activation by power-on. It is configured to execute a control management information acquisition process for receiving the control management information about itself, and to execute a control information communication process for transmitting and receiving the control information when the management set time elapses. ing.

  Further, the storage target control unit (H2 to H6), as the control management information acquisition process, sets a plurality of types of request information for requesting each of a plurality of types of control management information in a predetermined order. When the control management information of a certain type is received, the request information about the control management information of the next type is transmitted in a form to be transmitted, and the main control unit H1 distributes the control management information As a process, when a plurality of types of control management information is transmitted in a predetermined order and the type of control management information that comes first, any of the plurality of storage target control units controls that type. When the request information for requesting the management information is not transmitted, the control management information of the next order type is transmitted in a transmitted form.

  If each of the storage target control units does not receive the required type of control management information in the control management information acquisition process, the request information corresponding to the type of control management information is set. It is configured to repeatedly transmit every unit time.

Hereinafter, the control process after power-on of the main control unit H1 and the storage target control unit will be specifically described.
First, the control contents of the main control unit H1 will be described. As shown in FIG. 11, when the main control unit H1 is powered on and started up, it executes control management information distribution processing after the startup until the management set time (1.5 seconds) elapses. (Steps 1 and 2) When the set time for management (1.5 seconds) has elapsed since the start, the control information reception process and the control object (self-propelled lifting cylinder C1 and the like) in charge until the power is turned off. (Steps 3, 4, and 5). In the control information receiving process, the same process as the data receiving process described above is executed. When the power is turned off, if there is data to be updated as will be described later, the control management information is updated to the nonvolatile memory 50 (steps 6 and 7).

Next, the control management information distribution process will be described.
As shown in FIG. 12, when the control management information distribution process is started, a data reception process and a data transmission process are executed (steps 100, 101, 102). The data reception process will be described later. The data transmission process is a process for transmitting the data set in the transmission buffer onto the communication bus line 47.

  Then, every time the set unit time (10 msec) elapses, a process for transmitting data requested by a plurality of storage target control units is performed. That is, when any storage target control unit transmits request data requesting model type data, preparation for transmission of model type data stored in the nonvolatile memory 50 is made (steps 103 and 104). This transmission preparation will be described. This is processing for setting data to be transmitted (model type data) in the transmission buffer. If the data is set in the transmission buffer in this way, the data is transmitted onto the communication bus line 47 in the data transmission process in step 3. Similar processing is performed in the following transmission preparation.

  If none of the multiple storage target control units transmits model type request data requesting model type data, and one of them transmits fine adjustment request data requesting fine adjustment data, it is non-volatile. Preparation for transmission of fine adjustment data stored in the memory 50 (steps 107 and 108). When none of the plurality of storage target control units transmits fine adjustment request data, preparation for transmission of control setting data is made (step 109). The preparation for transmitting the control setting data is repeatedly performed every time the set unit time (10 msec) elapses even if no request is made from any storage target control unit.

Next, the data reception process will be described.
As shown in FIG. 13, when the received data is data for requesting transmission of control management information (steps 200 and 201), and the received data is received data from the machine control unit H2, this machine Data update processing corresponding to the control unit H2 is executed (steps 202 and 203). This data update process is performed as shown in FIG. That is, it is determined which data is requested by the machine control unit H2 (step 300), and if the transfer of the fine adjustment execution result is requested, the type of the fine adjustment update data included in the data is indicated. When the data is normal and the data indicating the fine adjustment data is normal (not zero), preparations are made for writing the fine adjustment data to be updated in the nonvolatile memory 50 (steps 301, 302, 303). ). That is, data is set in the write buffer. When such an update process is executed, as described above, the update process of the control management information to the nonvolatile memory 50 is executed before the power is turned off (steps 4 and 5).

  And the update process of such fine adjustment data is each performed about the data received from another memory | storage object control part, ie, the attitude | position control part H3, the threshing control part H4, the travel control part H5, and the binding control part H6 ( Steps 204-210).

  When the main control unit H1 cannot receive its own control management information from the non-volatile memory 50 in the control information reception process, it cannot perform appropriate control. The data stored in is set as control management information, and the operation control for controlling the control object (the cutting lift cylinder C1 and the like) in charge is executed.

Next, the control contents in the storage target control unit (H2 to H6) will be described.
As shown in FIG. 15, when the power is turned on to start up, control management information acquisition processing is executed until the management set time (1.5 seconds) elapses after the startup (steps 21 and 22). Even if the set time for management (1.5 seconds) has elapsed since startup, the control management information has not been acquired, or the acquired control management information exceeds the allowable range and is clearly abnormal If the value is correct, appropriate control cannot be performed. In this case, data stored in the read-only memory (ROM) 52 is set as control management information (steps 23, 24, and 25). After that, the control information is communicated to other control units until the power is turned off, and the operation control of its own control target (handling depth motor M1, etc.) is executed (steps 26, 27, 27). 28).

Next, the control management information acquisition process will be described.
As shown in FIG. 16, when control is started, data reception processing and data transmission processing are executed (steps 30, 31, 32). The data reception process will be described later. The data transmission process is a process for transmitting the data set in the transmission buffer onto the communication bus line 47.

  Then, every time the set unit time (10 msec) elapses, request information transmission processing for requesting the following necessary information is performed. That is, if the model type data has not been received from the main control unit H1, the model type request data is prepared for transmission as request information for requesting the model type data (steps 33 and 34). If the model type data has been received, it is determined whether fine adjustment data as control management information in the next order has been received from the main control unit H1, and if not received, fine adjustment data is requested. Preparation for transmission of fine adjustment request data as request information is made (steps 39 and 40). If fine adjustment update data has been received, it is determined whether or not control setting data has been received from the main control unit H1, and if control setting data has not been received, control information is requested. If the control setting information request data is received, empty data (transmission data whose data area is all zero) is prepared for transmission (steps 41, 42, 43).

  Therefore, if the storage target control unit does not receive the requested type of control management information, the storage target control unit repeatedly transmits the request information corresponding to the type of control management information every time the set unit time (10 msec) elapses. It is configured.

Next, the data reception process will be described. Since the travel control unit H5 and the other storage target control units (H2, H3, H4, H6) are partially different in processing, the travel control is performed first. The data reception processing of the storage target control units (H2, H3, H4, H6) other than the unit H5 will be described.
That is, as shown in FIG. 17, when the received data is transmission data for control management information from the main control unit H1 (steps 400 to 403), if the transmitted data is model type data, It is received in a state where it can be identified as model type data (steps 404 and 405). If the transmitted data is fine adjustment data, the data is received in a state where it can be identified as fine adjustment data (steps 406 and 407). If the transmitted data is control setting data, the data is received in a state where it can be identified as control setting data (steps 408 and 409).

Next, the data reception process of the traveling control unit H5 will be described.
As described above, the traveling control unit H5 includes the nonvolatile memory 51 for storing its own control management information. The nonvolatile control unit 51 includes the main control unit H1. The same contents are written and stored in parallel with the previously written nonvolatile memory 50. Further, as described above, the read-only memory 52 is also provided so that alternative control management information is written and stored.

As illustrated in FIG. 18, when the power is turned on and the control is started, the traveling control unit H5 executes the same processing as the processing of the other storage target control unit except for the update processing to the nonvolatile memory 51 (step 400). ~ 409). Description of the same processing is omitted, and only different processing is described below.
The control management information (fine adjustment data) transmitted from the main control unit H1 is different from the data stored in the nonvolatile memory 51, and the control management information is stored in advance. If it is within the set allowable range and is not an abnormal value, the acquired data is written into the nonvolatile memory 51 and the content is updated (steps 407a, 407b, 407c). That is, when the control management information (fine adjustment data) transmitted from the main control unit H1 does not change the same as the currently stored data, or when the control management information exceeds the allowable range and is clearly abnormal The update process is not executed.
By not executing the update process when the data has not changed, it is possible to prevent the life of the nonvolatile memory 51 from being reduced due to unnecessary rewriting.

The traveling control unit H5 as the specific storage target control unit cannot receive the control management information about itself transmitted from the main control unit H1, and even if the control management information is received, the value is within the allowable range. If it is apparently abnormal beyond the above, the update process to the nonvolatile memory 51 provided therein is not performed.
Incidentally, when the control management information cannot be acquired from the main control unit H1, or when the acquired control management information exceeds the allowable range and is clearly an abnormal value, a read-only memory (ROM) 52 is used. Is stored as control management information (steps 23, 24, and 25), and the operation control of its own control target (hydraulic control unit 43 and the like) is executed using the data. Become.

  As described above, in this combine, the traveling control unit H5 and the engine control unit H7 have good control of the control object that they are responsible for independently even if the control management information from the main control unit H1 is not communicated. Even if a communication error occurs in the field, the vehicle travels to a safe place suitable for repair work, such as a kite, after escaping from the field. It becomes possible to make it.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the above-described embodiment, the information management control unit executes the control management information distribution process until the management set time elapses after activation by power-on, and the storage target control Each of the units is configured to execute the control management information acquisition process until the set time for management elapses after the power is turned on, but instead of such a configuration, the information management As long as there is a request from the storage target control unit, the control management information distribution process is executed, or the control management information acquisition process is executed until each of the storage target control units receives it reliably. You may make it do.

(2) In the above-described embodiment, when the information management control unit transmits a plurality of types of control management information in a predetermined order and the type of control management information with the order in advance, a plurality of types of control management information are transmitted. Any one of the storage target control units is configured to transmit the control management information of the next order type when the request information requesting the type of control management information is not transmitted. However, instead of such a configuration, all of the plural types of control management information may be communicated all at once, and the communication method can be variously changed.

(3) In the above embodiment, the storage target control unit is configured to include a read-only storage unit that stores control control information for replacement. However, the storage target control unit does not include such a read-only storage unit. Also good.

(4) In the above-described embodiment, the specific storage target control unit includes the nonvolatile storage unit for the specific control unit and the read-only storage unit. However, the nonvolatile storage unit for the specific control unit It is good also as a structure provided only with a read-only memory | storage means.

(5) In the above embodiment, model type data, fine adjustment data, and control setting data are stored in the storage means as the control management information. However, any one or two of these are stored. Two or more items may be stored, or other types of data other than these data may be stored.

(6) In the above embodiment, as the storage target control unit, the machine control unit H2, the posture control unit H3, the threshing control unit H4, the travel control unit H5, and the binding control unit H6 are exemplified, but among these The present invention can be applied to work machines having various configurations, such as a configuration not including some of the control units and a configuration including other types of control units.

(7) In the above-described embodiment, the combine is exemplified as the work machine. However, the combine is not limited to the combine, and other types of work vehicles may be used, and the work machine may be a stationary work machine.

Combine side view The figure which shows the structure of a threshing apparatus Side view of combine front Side view of traveling device Side view of traveling device Side view of traveling device Top view of bundling device Rear view of binding device Diagram showing transmission structure Control block diagram Flow chart of control operation Flow chart of control operation Flow chart of control operation Flow chart of control operation Flow chart of control operation Flow chart of control operation Flow chart of control operation Flow chart of control operation

Explanation of symbols

H1 Information management control unit H2 to H6 Storage target control unit H5 Specific storage target control unit 50, 51 Non-volatile storage unit 52 Read-only storage unit

Claims (11)

A plurality of control units that can communicate with each other via communication means are distributed in each part of the machine,
The control objects that the plurality of control units are responsible for based on the input information input by the information input means provided therein, the control information communicated from other control units, and the control management information A control device for a work machine configured to control the operation of
Any one of the plurality of control units is configured such that all control units other than the self among the plurality of control units serve as storage target control units, or some of all control units other than the self control unit. As a storage target control unit, a control unit for information management including a writable nonvolatile storage means for storing the control management information of the plurality of storage target control units and the control management information of the control unit. Configured,
Control management information distribution processing for transmitting the control management information stored in the storage unit to the storage target control unit via the communication unit after the information management control unit is activated by power-on Is configured to run
Control management information acquisition processing for receiving the control management information about itself transmitted from the information management control unit via the communication unit after each of the storage target control units is activated by power-on. A control device for a work machine configured to perform. The information management control unit executes the control management information distribution process until the management set time elapses after the control unit is activated by turning on the power, and the control is performed when the management set time elapses. Configured to execute a control information communication process for transmitting and receiving information,
Each of the storage target control units executes the control management information acquisition process until the management set time elapses after activation by power-on, and when the management set time elapses, The control device for a work machine according to claim 1, wherein the control device is configured to execute a control information communication process for transmitting and receiving control information. There are multiple types of control management information as the control management information,
In the control management information acquisition process, the storage target control unit uses a plurality of types of request information for requesting each of a plurality of types of control management information in a predetermined order and the order in which the order is first. When the information is received, it is configured to transmit in the form of transmitting the request information for the control management information of the next order type,
When the control unit for information management transmits a plurality of types of control management information in a predetermined order and the type of control management information with the first order as the control management information distribution process When any of the plurality of storage target control units does not transmit the request information for requesting the type of control management information, the control management information of the next type is transmitted in a form to be transmitted. The control device for a work machine according to claim 2, which is configured.   If each of the storage target control units does not receive the required type of control management information in the control management information acquisition process, the request information corresponding to the type of control management information is set in a set unit time. The control device for a work machine according to claim 3, wherein the control device is configured to repeatedly transmit the information every time.   The storage target control unit includes a read-only storage unit that stores the control management information for replacement, and the information to be transmitted from the control unit for information management even when the management set time elapses. When the control management information cannot be received, the operation of the control object in charge is controlled based on the replacement control management information stored in the read-only storage unit. Item 5. The control device for a work machine according to any one of Items 2 to 4. A specific storage target control unit of the storage target control unit includes a nonvolatile storage unit for a writable specific control unit that stores the control management information about itself,
The specific storage target control unit is configured to store the control management information about itself received by the control management information acquisition process in a nonvolatile storage unit for the specific control unit, and When the control management information transmitted from the information management control unit cannot be received even after the management set time has elapsed, it is stored in the non-volatile storage means for the specific control unit The control device for a work machine according to any one of claims 2 to 4, wherein the control device is configured to control an operation of a control object that the user is in charge of based on the control management information.   The specific storage target control unit includes a read-only storage unit that stores alternative control management information, and the control management information about itself is stored in the non-volatile storage unit for the specific control unit. If the control management information about itself transmitted from the information management control unit cannot be received even if the management set time elapses, it is stored in the read-only storage means. The control device for a work machine according to claim 6, wherein the control device is configured to control an operation of a control object that the user is in charge of based on information for alternative control management.   The control device for a work machine according to any one of claims 1 to 7, wherein the control management information includes information on a model type of the work machine. Each part of the machine is configured to include an actuator as the control object that can freely move the operated body, and a potentiometer type detection sensor as the information input means for detecting the operation position of the operated body,
The detection sensor when the storage target control unit is configured to control the operation of the actuator based on detection information of the detection sensor, and the operated object is operated to a reference position by the actuator. The fine adjustment data for adjusting the individual difference of the detected value is communicated to the information management control unit as the control management information. Control device for work machines.   The storage target control unit is configured to be able to execute a fine adjustment data acquisition process for updating the fine adjustment data, and when the fine adjustment data for update is acquired in the fine adjustment data acquisition process, the fine adjustment data acquisition process is performed. The control device for a work machine according to claim 9, wherein the control device is configured to communicate adjustment data to the control unit for information management. An engine control unit that controls the operation of an engine mounted on a work vehicle that is a work machine is provided as a control unit different from the control unit for information management and the storage target control unit,
The information management control unit is configured to communicate control switching command information, target rotational speed information, and accelerator operation amount information as the control information to the engine control unit,
A state in which the engine control unit executes isochronous control for maintaining the output rotation speed of the engine at the target rotation speed based on the control switching command information communicated from the information management control unit; The control device for a work machine according to any one of claims 1 to 10, wherein the control device can be switched to a state in which droop control for adjusting the output rotation speed of the engine to a speed corresponding to the accelerator operation amount is executed. .

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