JPS63284642A - Abnormality diagnosis processing system for farm machine or the like - Google Patents

Abstract

PURPOSE:To detect the abnormal items in a short time without diagnosing successively various items by rearranging the diagnosis items in the order of higher abnormality frequencies in case the control functions have abnormalities. CONSTITUTION:When either one of plural control function systems has the abnormality in a combining job including the threshing, the operation of a combine is stopped temporarily and a connector 13A of a controller 1 is pulled out and connected to a connector 13B' of a checker 2. Then a memory board is loaded into a storage 20 of the checker 2 for diagnosis of the abnormal state. Then the numbers corresponding to the diagnosis items set previously are displayed on a monitor 17 for confirmation of the diagnosis items. The detected abnormal items are stored in the memory board with changes so that they are diagnosed first. Thus it is possible to diagnose the abnormal items in the order of higher abnormality frequencies.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an abnormality diagnosis processing method for agricultural machinery, etc., and can be used when a plurality of control functions are used to diagnose an abnormality using a checker.

Conventional technology and problems to be solved by the invention In recent years, with the spread of automation in agricultural machinery, etc., machines that automatically control the operation of these machines using a control device installed in the machine have come into practical use on the market. It is becoming more and more popular. However, in many of these control devices, for example, a control circuit such as a CPU performs arithmetic processing in order to operate multiple electromagnetic valves based on input signals from multiple sensors, etc. In recent years, the configurations of control devices have become increasingly sophisticated and complex, and the frequency of occurrence of abnormal conditions in the control devices has inevitably increased. Therefore, if an abnormal state occurs in the control device, a checker provided separately diagnoses the operating state of the control function of the control device, and the abnormal item is discovered through this diagnosis. However, when diagnosing the operating state using this checker, since the control device has a wide variety of configurations, abnormalities cannot be discovered unless the multiple control functions are diagnosed in order, which requires a lot of effort. This is a time-consuming and troublesome problem.

Therefore, this invention is designed to enable the detection of abnormal items in a short time with as little effort as possible when diagnosing an abnormality using a checker when an abnormal state occurs in multiple control functions in a control device such as an agricultural machine. This is what I am trying to do.

Means for Solving Problems The present invention provides a control device (1) having a plurality of control functions based on arithmetic processing such as a CPU, and a checker (2) for diagnosing the operating state of the control function to detect abnormalities in this diagnosis. The abnormality diagnosis processing method for agricultural machinery, etc. is configured to work in order from the side with the most frequency to the side with the least frequency.

Effect of the Invention In agricultural machines, etc., a control device (11) for automatically controlling the machine body is provided at an arbitrary position of the machine body, and the control device (1) is connected to the input side of a control circuit such as a CPU. If an abnormal state occurs in this control device (1) when performing calculation processing using signals from multiple sensors, etc., and operating multiple electromagnetic valves, etc. connected to the output side of the circuit, The plurality of sensors, electromagnetic valves, etc. are separated from the control circuit and connected to a separately provided checker (2), and this checker (2) allows the control device (1) to perform various control functions for each item. The operating condition is diagnosed in order,
Regarding the items in which an abnormal state has occurred during this diagnosis, the order of the items in which the abnormal state has occurred is changed so that the diagnosis can be performed first from the item in which this abnormal state has occurred each time, and the abnormality diagnosis by the checker (2) is repeated. The order of diagnostic items is rearranged from items with a high abnormality frequency to items with a low abnormality frequency.

Effects of the Invention As described above, when an abnormal state occurs in the control function of the control device (1), the checker (2) diagnoses the operating state of each item. By repeating abnormality diagnosis, the order of each diagnostic item will change.
By sorting items from items with a higher frequency of abnormalities to items with a lower frequency of abnormalities, the diagnosis order of abnormal conditions with a high probability of occurring from the items with a high frequency of abnormalities is arranged on the earlier side. To efficiently discover abnormal items in a short time without requiring the trouble of diagnosing items in sequence over time.

Embodiment In the illustrated example, an agricultural machine, particularly a combine harvester, etc., has a running device (5) having a pair of left and right running tracks (4) on the lower end side of the machine body (3), which run on the soil surface. A threshing device (6) for threshing the harvested husk culm is provided above the device (5), and a reaping device (7) for reaping the standing husk culm is provided at the front end of the threshing device (6) in the direction of movement. A control device (8) for controlling the machine body (3) and its control seat (9) are provided on the front right end side of the threshing device (6) in a plan view.

Further, the control device (8) is provided with a control device (1) having a plurality of control function systems through arithmetic processing by a CPU, etc., and each device +51 is connected to the input side of the control device (1). (Multiple sensors placed at arbitrary positions of 61+71 (harness (IIA) connected to 1r5 etc.)
In addition, a harness (11B) connected to a plurality of electromagnetic valves (121, etc.) that automatically operate the control device (8) by hydraulic pressure etc. is connected to the output side by a connector (13A) to control the control device (1). The connector (13B) is connected to the connector (13B).In addition to the body (3), the plurality of sensors (+01 and electromagnetic valves (1), etc., and the harness (IIAB ) is provided with a portable and box-shaped checker (2) for diagnosing the operating state of the motor. U (+41 is placed, this CPU U (141
The system includes a system selector switch (one and
The diagnosis start switch (old) starts diagnosis of each diagnosis item according to the preset order, and the monitor (1η) that displays the number to be diagnosed by the action of this start switch (161) and the alarm sounds if there is no abnormality during this diagnosis. a buzzer O1 that emits a sound, an order change switch (one) that is activated to change the order of diagnostic items if an abnormal condition occurs during this diagnosis, and a diagnostic harness (1) that extends outside of the checker (2). IIA'B') and connector (1
3B') and a storage device (2(I) for storing various functions of the control device (1) on a memory board are connected to each other. Also, on the top panel of the checker (2), the changeover switch ( 19. Place the start switch (1 East monitor f17), the buzzer, the change switch (19), and the harness (11A''B') at any position, and place the storage device (11A''B') at any side position. Place 21.

During the combine harvest operation in which the standing husks are harvested by the reaping device (7) and the cut husks are threshed by the threshing device (6), if an abnormal state occurs in any of the multiple control function systems during this operation. In such a case, in order to diagnose this abnormal condition, temporarily stop the operation of the aircraft in step 3),
Connector (13B) of the control device (1) of the aircraft (3)
Pull out the connector (13A) from the
13A) is connected to the connector (13B') of the checker (2) prepared separately, the memory device of the checker (2) (load the memory board to 2I and cpU04) performs arithmetic processing to diagnose abnormal conditions. Start. First, set the system selector switch (one) of the checker (2) to the control function system in which an abnormal condition has occurred, for example, if there is an abnormality in the tracing control function due to the erect culm during reaping travel, set it to the tracing control system, and start the diagnosis. switch (l
If Eil is a person, the number corresponding to the pre-set diagnosis item, for example, 1 and 2 are the left and right of the culm sensor that detects the presence or absence of a culm, and 3 and 4 are the traveling direction of the aircraft (3). The left and right direction sensors detect the left and right direction sensors, and 5 and 6 indicate the left and right power steering wheels that steer the aircraft (3).These numbers are displayed on the monitor (1η), and diagnosis is performed while checking the diagnostic items using these numbers. If the buzzer (18) emits a warning sound during this diagnosis, it means that there is no abnormality in the diagnosis result, and you will proceed to the next diagnosis item.
If no alarm is generated by ll, this diagnostic item is an item in which an abnormal condition has occurred. At the same time as this abnormal item is discovered, the order change switch (191) is turned on to change and store the currently discovered abnormal item in the storage board so that the diagnosis order in this control function system is first.

By repeating this change each time an abnormality diagnosis is performed, it is possible to diagnose items with a high abnormality frequency first, so it is possible to discover abnormal items that have a high probability of occurring from the items with a high abnormality frequency. It can be done efficiently in a short time.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and Figure 1 is a side view;
FIG. 2 is a perspective view, and FIG. 3 is a block diagram of the electric circuit. In the figure, symbol (1) indicates a control device, and symbol (2) indicates a checker.

Claims (1)

[Claims] In a control device (1) having a plurality of control functions based on arithmetic processing such as a CPU, a checker (2) for diagnosing the operating state of the control functions is operated in order from the side with the highest abnormality frequency to the side with the lowest frequency of abnormalities in this diagnosis. An abnormality diagnosis processing method for agricultural machinery, etc.