JP3302568B2 - Work machine inspection system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work machine inspection system including a work unit and a plurality of control units that can communicate with each other to control the operation of the work unit.

[0002]

2. Description of the Related Art In a working machine inspection system, the operation of a working unit such as a reaping unit or a threshing unit is conventionally inspected in a combine for agricultural work, which is an example of a working machine. For example, an external inspection device (checker) provided with inspection information is connected to a control unit on the working machine side in order to perform a test operation of the actuator of the above or check a detection operation of a detection unit such as a sensor. Inspection while sending command information from the side (for example,
Japanese Patent Application Laid-Open No. 6-269058), or the control unit of the work machine performs the inspection based on the internal inspection information stored therein (for example, Japanese Patent Application No. 7-210, which was previously proposed by the present applicant). 218740).

[0003]

When the above inspection is performed, each of the plurality of control units on the combine side is changed from the control state for normal work (normal mode state) to the control state for inspection (inspection state). Mode), and as a specific means of the switching, for example, the inspection apparatus individually instructs each control unit to switch to an inspection mode (external inspection mode) based on external inspection information, Alternatively, it is possible to individually instruct each control unit to switch to the inspection mode (self-inspection mode) based on the internal inspection information from a command unit such as a switch, but there is a disadvantage that the control configuration becomes complicated.

Therefore, only one of the plurality of control units is instructed to switch to the external or self-inspection mode from the inspection device or the command means such as a switch, and this switching is instructed. The control configuration can be simplified by transmitting a switching command to the inspection mode from the control unit to another control unit. However, when the other control unit is instructed to switch to the inspection mode by communication, it normally switches itself to the inspection mode state after receiving the reception confirmation information of the switching instruction from the partner (other control unit). For example, despite the fact that the other party (another control unit) normally receives the above-mentioned switching command and switches itself to the inspection mode state, and replies the reception confirmation information of the switching command, it suddenly enters the communication path. Under conditions where a communication error has occurred in some cases, the reception confirmation information of the switching command may not be normally received. Then, in such a case, the other party (the other control unit) operates in the inspection mode state, but one control unit that receives the command first operates in the normal mode state. If the data configurations of the two communication formats in the normal mode and the test mode are different, communication becomes impossible, and the operation of the test system may be stopped.

The present invention has been made in view of the above circumstances, and has as its object to switch one of the control units to the inspection mode when switching a plurality of control units to the inspection mode state. Simplification of the control configuration for the inspection mode switching so that all the control units can be switched from the normal mode state to the inspection mode state by mutual communication, and Even if a communication error or the like occurs during communication with
In the conventional method described above, the operation of the inspection system is stopped by appropriately avoiding a different mode state so that one control unit operates in the normal mode state and the other control unit operates in the inspection mode state. The purpose is to eliminate technical defects.

[0006]

According to the first aspect of the present invention, one of the plurality of mutually communicable control units includes:
Upon receiving a command from the inspection mode commanding means in the normal mode state, the control section transmits a switching command to the inspection mode to another control section in the normal mode state, and the other control section having received the switching command resets itself. While switching to the inspection mode state, the reception confirmation information of the switching command is transmitted to the one control unit, and the one control unit that has received the reception confirmation information switches itself to the inspection mode state. Here, when the one control unit has transmitted a switching instruction to the inspection mode to the other control unit a set number of times, even if the reception confirmation information has not been received from the other control unit, the one control The unit switches itself to the inspection mode state.

Accordingly, when a command to switch to the inspection mode is issued to one of the plurality of control units, all the other control units also switch from the normal mode state to the inspection mode state through mutual communication. In addition, it is possible to simplify the control configuration for switching the inspection mode, and to transmit the switching command for a set number of times so that the other control unit can reliably receive the switching command, while causing a communication error or the like. Occurs even if normal reception confirmation information cannot be received
It is possible to appropriately avoid such a trouble that the operation of the system is stopped in a different control state so that one control unit remains in the normal mode state and the other control unit operates in the inspection mode state.

According to a second aspect of the present invention, in the first aspect, a command to switch to a self-inspection mode state from a self-inspection mode switching means provided in any of the plurality of control units is provided. Receives the instruction from the inspection mode instruction means, and switches each control unit to the internal inspection mode state by communication. Then, in the self-inspection mode state, the plurality of control units inspect the operation of the working unit based on the internal inspection information stored in any of the plurality of control units while communicating with each other.

Therefore, the operation of the working unit can be inspected by the inspection information provided on the working machine side, so that, for example, the trouble of connecting an external inspection device one by one becomes unnecessary.
In addition, the inspection can be performed even when there is no inspection device, so that the preferable means of the configuration of the first aspect can be obtained.

According to the configuration of claim 3, claim 1 or 2
In the configuration of the above, when an inspection device communicable and connectable to at least one of the plurality of control units is connected to any of the connectable control units, the connected control unit is connected to the external inspection unit. A switching command to the external inspection mode state from the mode switching unit is received as a command from the inspection mode instruction unit, and each control unit is switched to the external inspection mode state by communication. In the external inspection mode state, the operation of the working unit is inspected based on the external inspection information provided in the inspection device while communicating between the inspection device and the plurality of control units.

Therefore, since the inspection device provided with the external inspection information can be connected to the working machine for the inspection, for example, the contents of the inspection based on the external inspection information can be enhanced so that the operating unit is in a state close to the actual operating state. In this case, it is possible to accurately detect even a small defect, so that a suitable means having the structure of claim 1 or 2 can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a combine for agricultural work as a working machine will be described below with reference to the drawings. As shown in FIG. 1, the combine has a reaper 12 provided at a front portion of a body V having a pair of right and left crawler traveling devices 11.
A control unit 13, a threshing unit 14 for threshing and sorting the harvested grain culm, a Glen tank 15 for storing grains supplied from the threshing unit 14, and the like are mounted behind. Here, the reaper 12
The threshing unit 14 and the like correspond to a working unit.

The cutting section 12 receives a weeding tool 16 attached to the tip, a grain stalk raising device 17, a cutting blade 18 for cutting the root of the raised grain stalk, and a cut grain culm on the tip side. And a transporting device 19 for transporting to the threshing unit 14. Further, an ultrasonic sensor S1 for detecting the height of the cutting unit 12 from the ground and a stock sensor S2 for turning on when the grain stalk touches to detect that the cutting operation is being performed are provided. The height information from the ground by the ultrasonic sensor S1 is used for cutting height control when cutting the culm, and the detection information of the stock sensor S2 is used as one of control start conditions.

Further, in order to maintain the handling depth in the threshing unit 14 in an appropriate state, the tip sensor S3 ( 5 (see FIG. 5) are provided in the culm length direction (ear side and root side). Then, based on the detection information of the pair of head sensors S3, the transport front end side of the transport device 19 is swung in the culm length direction with respect to the rear end side,
An adjustment is made so that the head of the grain stem is located between the pair of head sensors.

The left and right crawler traveling units 11 are configured to be able to be individually driven up and down with respect to the body V. As a result, it is possible to perform the rolling control for maintaining the body V horizontal regardless of the inclination of the ground or maintaining the body V at the set angle. For this purpose, a rolling sensor S4 for detecting the inclination of the body V with respect to the horizontal is provided.

The threshing unit 14, as shown in FIG.
1, a feed chain 22 for transporting grain culms supplied from the mowing unit 12, a sorting device B including a torsion 23 and a rocking sorting plate 24, a first port 2 for grain recovery.
5, and a second port 26 for collecting a mixture of grain and straw waste. Of the processed material threshed in the handling room A, the single-grained product is supplied to the receiving net 2 provided at the lower part of the handling room A.
7 and leaked to the sorting device B,
7 falls into the sorting device B from the rear end.

The swinging sorting plate 24 of the sorting device B includes
3 includes a Glen pan 28 located above, a chaff sheave 29 located behind and a Glen sheave 30 located below. In the chaff sheave 29, the interval between adjacent strip-shaped members (referred to as chaff opening) is changed by simultaneously changing the angle of the plurality of strip-shaped members arranged in the processing object transfer direction around the horizontal axis. A chaff opening sensor S8 using a potentiometer for detecting the chaff opening.
(See FIG. 5).

The torsion 23 is used to blow off the straw debris on the oscillating sorting plate 24. The greater the degree of opening of the fan case cover 23a, the greater the amount of air that escapes from the opening. The wind force (referred to as toumi wind force) exerted on the processed material on the swing sorting plate 24 is reduced. A toumi wind sensor S9 (see FIG. 5) using a potentiometer for detecting toumi wind is provided.

With respect to the sorting apparatus B, the control (sorting control) for adjusting the chaff opening and the wind power according to conditions such as the amount, type, and humidity of the processed material is performed.
The grains leaking from the grain sieve 30 are oscillated on the sorting plate 2
The mixture of the grain and the straw waste collected from the first port 25 provided below and stored in the Glen tank 15 and dropped from the rear end of the chaff sheave 29 or the rear end of the Glen sheave 30 is discharged from the second port 26. It is collected and returned to the swing sorting plate 24.

Next, a power transmission system is shown in FIG. The output of the engine E mounted on the machine body V is transmitted to the threshing unit 14 via the threshing clutch 31 and the traveling clutch 32
The transmission is transmitted to the transmission section 34 of the crawler traveling device 11 via the continuously variable transmission 33. Part of the output transmitted to the transmission section 34 is transmitted to the reaping section 12 via the reaping clutch 35. S7 is a threshing switch for detecting the on / off state of the threshing clutch 31, and S5 applies a magnetic field to the flywheel ring gear of the engine E to obtain a sine wave of a frequency corresponding to the number of teeth per unit time. S6 is a speed sensor for detecting the engine speed, which is formed by an electromagnetic pickup. S6 is a vehicle speed sensor provided in the transmission for detecting the vehicle speed.

A continuously variable transmission 33 for increasing or decreasing the vehicle speed
Is manually operated by a shift lever and automatically operated by an electric motor. That is, since the engine speed decreases as the engine load increases, the vehicle runs at a constant speed when the engine speed is optimum, but when the load increases and the engine speed decreases, the vehicle speed is reduced and If the load is reduced by reducing the threshing processing amount and conversely, if the load is reduced and the engine rotation speed becomes higher than the optimum rotation speed, the vehicle speed is increased to increase the cutting amount, that is, the threshing processing amount, so that the continuously variable transmission is performed. Vehicle speed control is performed to increase or decrease the running speed by performing a gear shift operation on the device 33. However, it does not become faster than the preset maximum vehicle speed.

As shown in FIG. 4, a display panel unit C for inputting command information such as start / stop of each control and displaying various control information is a combination of a liquid crystal display module and a membrane keyboard. The body-shaped panel is provided at a position that is easy for the operator of the control unit 13 to see and operate. On the front surface of the display panel unit C, a display screen 1 as display means for displaying information is provided.
And key input units 2, 3, and 4 for inputting information. The display screen 1 is composed of a dot matrix type liquid crystal graphic display, on which various operating information such as a remaining fuel amount, an hour meter (operating time), an engine speed, a load state, and the like are displayed. The key input units 2, 3, and 4 are configured by push-button switches, and include a start / stop switch 2 for each control, a changeover switch 3, and a storage switch 4.

Next, a control configuration of the combine is shown in FIG. A meter controller 7 and a control unit 8 are each configured using a microcomputer as a plurality of control units for controlling the operation of each of the working units (the reaping unit 12, the threshing unit 14, and the like), and , RS485 interface format. The detection information of the stock sensor S2, the head sensor S3, the rotation speed sensor 5, the threshing switch S7, and the fuel sensor S10 for detecting the remaining amount of fuel among the sensors S1 to S9 are input to the meter controller 7. Each detection information of the ultrasonic sensor S1, the rolling sensor S4, and the vehicle speed sensor S6 is input to the control unit 8.

On the other hand, from the meter controller 7, an actuator (oscillation motor) M1 for adjusting the handling depth,
A drive signal for an AES (automatic engine stop) actuator (relay or the like) M2 is output, and the control unit 8 outputs cutting height control and rolling control actuators M3 to M4, vehicle speed control, and chaff opening adjustment. Signal is output to each of the electric motors M5 to M7 for controlling the wind power and the wind power of the windmill. The meter controller 7 and the control unit 8 control each actuator M based on the detection information of each sensor and the preset control information.
1 to M4, the electric motors M5 to M7, and the like are driven to execute the above-described controls (depth control, cutting height control, rolling control, sorting control, vehicle speed control, and the like).

Each of the working units (the cutting unit 12, the threshing unit 14)
) Is stored in either the meter controller 7 or the control unit 8. In this embodiment, the internal inspection information is stored in the meter controller 7, but may be stored in the control unit 8.

Each of the meter controller 7 and the control unit 8 controls the operation of each working unit (the reaping unit 12, the threshing unit 14, etc.) for the work, and the operation of the working unit. The inspection mode is configured to be freely switched to an inspection mode state for inspecting. Here, as the inspection mode state, one of a self-inspection mode state in which inspection is performed based on the internal inspection information and an external inspection mode state in which the operation of each working unit is inspected by a microcomputer checker MC described later. Selected.

The display control of the display screen 1 of the display panel unit C and the detection of the operating state of the key input units 2, 3, 4 are performed by the meter controller 7. The start / stop switch 2 has a plurality of switches corresponding to each control as shown in FIG. 4 to instruct start and stop for each control described above, and each switch is also used for start and stop. . That is, when the switch corresponding to the active control is pressed, the control is stopped, and when the switch corresponding to the stopped control is pressed, the control is activated.

The changeover switch 3 (hereinafter, also referred to as CK-1) is used to manually switch the control state between the normal mode and the self-inspection mode. Connected on state,
As shown in FIG. 5, the control unit 8 is also provided with a switch having the same function as the switch 3 and the memory switch 4 of the meter controller 7, as shown in FIG. A key input unit including 3A and a memory switch 4A is provided. And
The changeover switches 3 and 3A provided in the meter controller 7 and the control unit 8 function as a self-inspection mode switching means for switching the meter controller 7 and the control unit 8 to a self-inspection mode state based on the internal inspection information. I do.

As shown in FIG. 6, the microcomputer checker MC as an inspection device provided with external inspection information for inspecting the operation of each of the working units (the cutting unit 12, the threshing unit 14, etc.) on the combine side. An IC card 42 as a detachable storage medium for storing information, an inspection control unit 41 for inspecting the operation of each work unit based on the information of the IC card 42, an RS232C interface 45, and an LCD (liquid crystal) as a display unit ) A display 43, an operation key 44 for inputting information, and the like are provided. The IC card 42
The inspection information for each different type of work machine (for example, a combine or a tractor as a work machine for agricultural work) or the same type of work machine (for example, a combine) is stored in each different IC card 42. Have been.

As shown in FIGS. 5 and 6, the RS232C interface 45 on the microcomputer checker MC side
Meter controller 7 via wire harness 46
The microcomputer checker MC is connected to at least one (in this case, both) of the meter controller 7 and the control unit 8 on the combine side by being connected to the RS232C interface 6A on the side or the RS232C interface 6B on the control unit 8 side. To be communicable and connectable.

When the microcomputer checker MC is connected to the meter controller 7, the external inspection command switch 5A provided on the meter controller 7 is grounded and turned on, and the microcomputer checker MC is connected to the control unit 8. When connected, the external inspection command switch 5B provided on the control unit 8 side is grounded and turned on. That is, the external inspection command switch 5
A and 5B (hereinafter, also referred to as CK-2) for connecting the microcomputer checker MC to one of the meter controller 7 and the control unit 8 to switch to the external inspection mode state based on the external inspection information. Function as external inspection mode switching means.

Therefore, the switching to the self or external inspection mode is commanded by the changeover switches 3 and 3A as the self-inspection mode switching means and the external inspection command switches 5A and 5B as the external inspection mode switching means. The inspection mode instructing means 100 is configured.

Next, a specific configuration for switching the control state from the normal mode state to the self-inspection or external inspection mode state will be described. In other words, when one control unit (for example, the control unit 8) of the meter controller 7 and the control unit 8 receives a command from the inspection mode command unit 100 in the normal mode state, the other control in the normal mode state is performed. A command to switch to the inspection mode is transmitted to the controller (meter controller 7) a set number of times (for example, two times) until the reception confirmation information of the switching command is received, and another controller (meter controller 7) transmits the command. When the switching mode is switched to the inspection mode in response to the reception confirmation information of the switching command and the switching command is transmitted to another control unit (meter controller 7) a set number of times (two times), another control is performed. The mode is switched to the inspection mode even when the reception confirmation information of the switching command is not received from the unit (meter controller 7). When the other control unit (meter controller 7) receives the switching command from the one control unit (control unit 8), the other control unit switches itself to the inspection mode state and the one control unit (control unit It is configured to transmit reception confirmation information of the switching command to the unit 8). still,
The set number of times can be set to an appropriate number other than two in accordance with the error rate of the communication state and the like.

In the self-inspection mode, the meter controller 7 and the control unit 8 communicate with each other, and based on the internal inspection information, the working unit (the reaping unit 1).
2. The operation of the threshing unit 14) is inspected. As a specific example, an operation of displaying, on the display screen 1, detection information of the sensors S1 to S10 as operation state detecting means for detecting the operation state of the working unit itself or the operation state of the actuators M1 to M7. Perform a state detection check.

In the external inspection mode, the microcomputer checker MC communicates with a control unit (for example, the control unit 8) to which the microcomputer checker MC is connected, and performs other control via the control unit (the control unit 8). It is configured to inspect the operation of the working unit (the cutting unit 12, the threshing unit 14, etc.) based on the external inspection information while performing communication with the unit (meter controller 7). As a specific example,
An actuator for operating the working unit (the cutting unit 12, the threshing unit 14, etc.) in response to an operation command from the microcomputer checker MC, that is, the actuator M1 for adjusting the handling depth,
Each actuator M for cutting height control and rolling control
A test operation test for operating each of the actuators M1 to M7 such as 3 to M4 to perform a test operation of the working unit; and
An operation state detection test for displaying detection information of each of the sensors S1 to S10 on the LCD display 43 of the microcomputer checker MC is executed.

Next, the control units 7 on the combine side,
8 will be described with reference to the control flowcharts of FIGS. When the main key is turned on and the drive power supply is turned on, the apparatus is activated in the normal mode state, and the set cycle (10 ms) is continued until a set time (500 ms or the like) elapses.
Etc.), a sensor signal is input, and an external inspection command flag and a self-operation flag are set according to the state of the switches CK-1 and CK-2. Specifically, CK-
Set the external inspection command flag when 2 is on,
The self-operation flag is set when CK-2 is off and CK-1 is on, and the flag is not set when CK-1 and CK-2 are both off. Then, when the set time (500 ms or the like) has elapsed, when the external inspection command flag is in the reset state and the self-operation flag is in the set state, the self-inspection instruction flag is changed as CK-1 changes from the on state to the off state. Is set.

Next, when the self or external inspection command flag is in the set state after the setting processing of each flag, if the inspection mode switching flag to be set as described later is in the set state, the self inspection mode or the external inspection mode is set. After switching to the inspection mode state and performing the subsequent processing, if the inspection mode switching flag is in the reset state, the transmission processing of the inspection switching instruction to the self-inspection mode or the external inspection mode is performed to the other control units. Do. Then, when the self or external inspection command flag is in the reset state, and after performing the transmission processing of the inspection switching instruction, the control unit waits until control data from another control unit is received. When the reception is completed, if the received data is reception acknowledgment information (referred to as an ACK signal) for the transmitted inspection switching command,
K signal), but if the inspection switching command has already been transmitted twice, the inspection mode switching flag is set,
If the received data is a test switching command for a self-test or an external test, after transmitting an ACK signal corresponding to the test-switch command, the mode is switched to the self-test mode or the external test mode, respectively, and the subsequent processing is executed. In cases other than the above, the process returns to the flow from the judgment of the self or external inspection command flag.

In the self-inspection mode, FIG.
As shown in (a), the drive power supply is turned on in a state where the CK-1 is operated to the on state, and thereafter, as the CK-1 changes to the off state, the state is switched to the self-test mode state. Thereafter, each time the changeover switch 3 is switched between the ON state and the OFF state,
2. The state is sequentially switched to each inspection state in which the inspection of each working unit such as the threshing unit 14, the engine E, the machine body V, and the traveling device 11 is performed, and the contents of each inspection state are displayed on the display screen 1.

Inspection of each working unit includes, specifically, an input check for each of the sensors S1 to S10 and a simple output check for each of the actuators M1 to M7. The operation such as the model setting mode is also performed. In the input check, for example, when the stock sensor S2 provided in the reaping unit 12 is rocked by hand, as shown in FIG. 4, "stock sensor" is displayed on the display screen 1 and the buzzer is activated at the same time. Thus, it can be confirmed that the stock sensor S2 is performing detection operation. In the output check, for example, in the depth adjustment, the depth automatic lamp is turned on, and the output to the deep side and the output to the shallow side are alternately repeated with a stop time. The operation of the adjustment actuator M1 can be confirmed. At the time of this output check, “output inspection” is displayed on the display screen 1.

In the fine adjustment mode, for example, by operating a chaff setting volume (not shown) to change the chaff opening, data corresponding to the maximum and minimum end positions of the potentiometers constituting the chaff opening sensor S8 are stored. Read, and determine whether each data is a normal value. If the data is normal, the value is stored. If the data is abnormal, the value is not stored and “chaff fully closed value error”
Etc. are displayed. In the model setting mode, each time the changeover switch 3 is operated, the model name is sequentially displayed. Therefore, when the model name to be controlled is displayed, the storage switch 4 is operated to store the model name. Do.

In the normal mode state, as shown in FIG. 9 (b), the control state is displayed in a predetermined order, and every time the changeover switch 3 is switched between the off state and the on state. Next, operation information indicating the control state of each part of the machine is sequentially displayed on the display screen 1. 10A shows an hour meter (operating time) display, FIG. 10B shows a bar graph display of the engine speed, and FIG. 10C shows a load level represented by a number from 1 to 4 (the number is large). The display shows a bar graph on the left side of each display. The display operation in the normal mode is such that after the start of the normal mode, the model is displayed for 2 seconds, the hour meter is displayed and the apparatus stands by. When the engine starts, the engine speed is displayed. The engine load is displayed as the state changes. As described above, in the normal mode, the meter controller 7
The operation information is displayed on the display screen 1.

As shown in FIG. 9 (b), in the normal mode state, the abnormality control mode is activated upon detecting any abnormality in each machine part, and the display screen 1 is changed from the normal display to each machine part. The display is switched to an alarm display which is an abnormal display for displaying an abnormal state, and in the abnormal control mode, the display on the display screen 1 is returned to the normal display as the changeover switch 3 is switched between the off state and the on state. It is configured. The alarm display indicates a failure location and the like. In addition, you may make it generate | occur | produce an alarm sound by a buzzer, and blink by a lamp together with the said alarm display, In that case,
When the changeover switch 3 is operated, the alarm sound and the blinking display are stopped.

Next, the inspection contents in the external inspection mode will be described. In the “input function inspection mode” selected by the operation keys 44, the inspection control unit 41 on the microcomputer checker MC side is required for the input function inspection in accordance with a preset order for each of the plurality of input function inspection items. An operation instruction to the working unit (for example, an instruction to perform an ascent operation to the reaper) is displayed on the LCD display 43, and a working unit (for example, the reaper 12) to be subjected to an input function test on the combine side. Sensors (elevation position sensor of reaper, ultrasonic sensor, etc.)
When the combine side receives the designation information of the sensor, it transmits the detection information of the designated sensor to the microcomputer checker MC side, and the inspection control unit 41 of the microcomputer checker MC side transmits Upon receiving the detection information of the sensor, based on the content of the operation instruction to the working unit (up operation of the reaping unit 12) and the detection information of the sensor (such as the elevation position sensor of the reaping unit), the input function test is performed. An input function inspection control is performed to determine whether or not the input function of the target work unit (reaper) is acceptable, and to display the determination result on the LCD display 43.

In the "output function inspection mode" selected by the operation key 44, the inspection control unit 41 on the microcomputer checker MC side outputs the output function in accordance with a preset order for each of the plurality of output function inspection items. An operation instruction (eg, output of a front buzzer) of the actuator in the operation instruction and output function inspection required for the inspection is displayed on the LCD 43, and
The combiner transmits to the combiner the designation information of the working unit (in this case, the display / alarm unit connected to the meter controller 7) to be subjected to the output function inspection, and on the combiner side, When the designated information is received, output function inspection control for operating the actuator (front buzzer) related to the designated working unit is performed.

In the "integrated function inspection mode" selected by the operation key 44, the inspection control section 41 on the microcomputer checker MC side performs the input function inspection control and the input function inspection control in accordance with a preset order of the integrated function inspection items. It is configured to execute an inspection for each inspection item in the output function inspection control.

Note that the combine meter controller 7
In the table, various types of error information about each working unit or sensor generated during the operation of the machine are stored. Here, as the error information during the operation of the machine, the operation lock of an actuator such as a motor, the number of occurrences of an abnormality in a detection value of a sensor (for example, a case where the value becomes impossible, or a case where the sensor does not operate at all) are stored. Is done. This error information is sent to the microcomputer checker MC side,
The information is displayed on the display 43 and is used as self-diagnosis data for identifying a failure location based on the probability of occurrence of the abnormality. Further, when an error information deletion command is received from the microcomputer checker MC, the stored error information is deleted. Further, the fine adjustment data is also transmitted to the microcomputer checker M in response to a request from the microcomputer checker MC.
It is sent to the C side and displayed on the LCD display 43.

Next, a control operation in the external inspection mode will be described based on a control flowchart on the microcomputer checker MC side shown in FIGS. In the main flow (FIG. 11), first, a request signal of model data and the like (in addition to the model, data of a format data, a machine number, a use time, and the like) is sent from the inspection device or the microcomputer checker MC side to the work machine or the combine side. When the combiner receives the request signal, the combiner transmits information such as stored model data. When the checker MC receives information such as model data, the received model data and the operation keys 4
The LCD display 43 displays both of the model data input in step 4.
And if the two model data do not match, display that fact and instruct the user to re-enter the correct model data, and only when the two model data match,
Inspection information corresponding to the model data is selected from information stored in the IC card 42. When the all function check is instructed by the operation key 44, all the inspection items are executed for the "input function inspection" and the "output function inspection", and when not, the "integrated function inspection" is executed. The process of displaying the inspection result is executed until the end of the inspection is instructed.

In the "input function test" (FIG. 12), first,
A start message as shown in FIG.
Is displayed, the operation is performed according to the instruction (in this example, the engine is started). Next, when a confirmation key is input, an operation required for executing each input function inspection item is instructed. In the example illustrated in FIG. 16A, an instruction is given to raise the cutting unit. Next, the input signal of each sensor that should make a predetermined change in accordance with the operation is checked, and if there is a predetermined change, it is determined to be OK.
J is determined. Then, when the determination is OK, FIG.
After the OK display as shown in (b) is performed and the confirmation key is input, the process returns to the flow of the next operation instruction unless all the inspection items are completed. If the determination is NG, after the confirmation key is input, an NG display as shown in FIG. 16C is performed for several seconds, and an error is recorded for the sensor for which the predetermined signal change was not obtained. The process returns to the flow of the next operation instruction, except for the case where the inspection item of the above is completed.

In the "output function test" (FIG. 13), first,
A start message as shown in FIG. 17 is displayed on the screen, and operation is performed according to the instruction (in this example, the engine is stopped). Next, when the confirmation key is input, the execution contents of each output function inspection item and the operation instructions necessary for the execution are displayed. In the example illustrated in FIG. 18, execution of the output of the front buzzer is displayed. And
When the confirmation key is input, the process returns to the flow from the display of the execution contents of the output function inspection items and the operation instruction for the same, unless all the inspection items have been completed.

In the “integrated function test” (FIG. 14), first,
Various control names provided for the model are displayed on the screen based on the model data and so on.If a control to be inspected is selected from the screen, a function inspection item for input / output performed in the inspection of the control is searched. , The input and output inspection items are executed accordingly. The execution contents are "input function test" (FIG. 12) and "output function test" (FIG. 13).
For example, when the handling depth control is selected, a start message (start of the engine) as shown in FIG. 15 is displayed on the screen. Next, an operation instruction as shown in FIG. 16 (a) is displayed. When the operation is performed according to the instruction and the result is OK, an OK display as shown in FIG. 16 (b) is displayed. The execution contents of the output inspection as shown in FIG. 19 (in this example, the output of the motor for adjusting the handling depth) are displayed. Then, the above flow is executed until all the inspection items are completed.

In the display of the inspection result, when there is an NG item, the name of the sensor determined to be NG is displayed as shown in FIG. 20, and when there is no NG item, a message indicating that there is no NG item is displayed. Is done.

[Alternative Embodiments] In the above embodiment, the working machine inspection system of the present invention is applied to a farming combine as a working machine. It is also applicable to construction machines for civil engineering work. The specific configurations of the working unit and the control unit, the inspection contents in each inspection mode, and the like are appropriately set according to the working machine.

In the above embodiment, the plurality of control units are constituted by the two control units 7 and 8. However, for example, when complicated control is performed on a large number of work units, three or more control units are required. May be configured.

In the above embodiment, both the self-inspection and the external inspection can be selected as the inspection mode. However, the inspection mode may be such that only one of them (for example, only the self-inspection mode) can be inspected.

In the above embodiment, the inspection apparatus MC is configured to be freely connectable to any of the plurality of control units 7 and 8, but it can be connected to at least one (for example, the control unit 8). The self-inspection mode switching means 3 and 3A need not be provided in all of the plurality of control units 7 and 8, but may be provided in any of the plurality of control units 7 and 8. I just need.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a side perspective view of the threshing unit of the combine.

FIG. 3 is a power transmission diagram of the combine.

FIG. 4 is a front view of a display panel provided in the combine.

FIG. 5 is a block diagram of a control configuration of the combine.

FIG. 6 is a block diagram of a control configuration of the inspection device.

FIG. 7 is a flowchart of inspection control on the combine side;

FIG. 8 is a flowchart of inspection control on the combine side.

FIG. 9 is a time chart showing control operations in a normal mode and a self-inspection mode.

FIG. 10 is a diagram of a display screen in a normal mode.

FIG. 11 is a main flowchart of control in an external inspection mode.

FIG. 12 is a flowchart of an input function inspection process in an external inspection mode.

FIG. 13 is a flowchart of an output function inspection process in an external inspection mode.

FIG. 14 is a flowchart of an integrated function inspection process in an external inspection mode.

FIG. 15 is a display example of a display screen on the inspection device side.

FIG. 16 is a display example of a display screen on the inspection device side.

FIG. 17 is a display example of a display screen on the inspection device side.

FIG. 18 is a display example of a display screen on the inspection device side.

FIG. 19 is a display example of a display screen on the inspection device side.

FIG. 20 is a display example of a display screen on the inspection device side.

[Explanation of symbols]

 12, 14 working unit 7, 8 control unit 100 inspection mode command means 3, 3A self-inspection mode switching means MC inspection device 5A, 5B external inspection mode switching means

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-7-143575 (JP, A) JP-A-7-210237 (JP, A) JP-A-2-8728 (JP, A) JP-A-4- 293103 (JP, A) JP-A-62-128851 (JP, A) JP-A-7-44222 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G05B 7/02 G05B 23 / 02

Claims (3)

(57) [Claims] An inspection system for a work machine, comprising: a work unit; and a plurality of control units that can communicate with each other to control the operation of the work unit. Is configured to be freely switchable between a normal mode state in which the operation of the working unit is controlled for work and an inspection mode state in which the operation of the working unit is inspected, wherein one of the plurality of control units is controlled. When the unit receives a command from the inspection mode commanding unit in the normal mode state, the unit transmits a switching command to the inspection mode to the other control units in the normal mode state a set number of times until receiving the reception confirmation information of the switching command. At the same time, the mode is switched to the inspection mode in response to receiving the reception confirmation information of the switching command from the other control unit, and when the switching command is transmitted to the other control unit a set number of times, It is configured to switch to the inspection mode state even when the reception confirmation information of the switching command is not received from another control unit. The other control unit, when receiving the switching command from the one control unit, resets itself. An inspection system for a working machine configured to switch to an inspection mode state and transmit reception confirmation information of the switching instruction to the one control unit. 2. An internal inspection information for inspecting an operation of the working unit is stored in any of the plurality of control units, and the inspection mode command means is provided in any of the plurality of control units. The inspection system for a work machine according to claim 1, further comprising a self-inspection mode switching means provided to switch to a self-inspection mode state based on the internal inspection information. 3. An inspection apparatus provided with external inspection information for inspecting the operation of the working unit, the inspection apparatus being communicably connected to at least one of the plurality of control units, wherein the inspection mode is provided. External inspection mode switching means for switching the inspection apparatus to an external inspection mode state based on the external inspection information in accordance with connecting the inspection apparatus to any of the connectable control units of the plurality of control units. The inspection system for a working machine according to claim 1, wherein the inspection system comprises: