JPH0514318B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to working machines such as agricultural machines and civil engineering construction machines, and more specifically, in working machines equipped with various monitoring functions, the degree of urgency of a required operation is determined based on the detection status of the monitoring function. This proposed a work machine that makes a judgment and notifies you. The present invention will be described in detail below based on drawings showing an embodiment of a combine harvester. FIG. 1 is a schematic side view of a combine harvester according to the present invention (hereinafter referred to as the present invention machine), and an electronic device as described below is provided in a front panel 91 in front of a driver's seat U. FIG. 2 is a block diagram showing the main parts of the electronic circuit of the present invention. In the figure, 10 is a microcomputer that performs various automatic controls, and is connected to the positive terminal of the battery 2 via a key switch 3.
CPU (central processing unit) 11, input/output interface 12, ROM (read-only memory) 13 and
Consists of 14 RAM (Random Access Memory) etc. A large number of sensors, switches, etc. for protection and monitoring are connected to each port a ₁ to _{a 12} of the large number of input ports 12a of the input/output interface 12.
Port _A1 is turned on when the threshing lever is operated to the threshing side due to the successive threshing operation of the threshing clutch.
A threshing switch 41 is connected to port a ₂ which sets port a ₁ to low level, and turns on when the reaping lever, which is involved in engaging and disengaging the reaping clutch, is operated to the reaping side and sets port a ₂ to high level. Reaping switch 42
is connected. A signal which becomes high level when the output of the charging circuit 43 of the battery 2 is not obtained is given to the port _a3 , and the charge lamp 73 is turned on by this signal. port a ₄
When the pressure in the hydraulic circuit of the hydraulic system driven by the engine is below a predetermined pressure, it is turned on (it is turned off when the normal pressure is reached due to engine rotation) and the port _A4 is set to low level. Oil pressure sensor 4
4 is connected, and when this oil pressure sensor 44 is turned on, an oil pressure lamp 74 is turned on.
A switch circuit 8 is connected to port a ₅ , and when the switch circuit 8 is turned on, the port a ₅ becomes low level.
A charged liquid sensor 45 that turns on when the charged liquid level in the battery 2 falls below a predetermined value is connected to the input end of the switch circuit 8. When the sensor 45 turns on, the switch circuit 8 turns on and charging starts. The liquid lamp 75 is turned on. When the cooling water in port _A6 reaches a certain temperature or higher, it turns on and shuts off the port.
A water temperature sensor 46 is connected which sets _a6 to a low level, and when this water temperature sensor 46 is turned on, a water temperature lamp 76 is turned on. Port A ₇ is equipped with a No. 2 screw rotation sensor 4 that detects the rotation speed of the No. 2 screw in the No. 2 grain removal section.
7 is connected, and when the No. 2 screw becomes overloaded, the No. 2 screw rotation sensor 47 outputs a high level signal to the port _a7 , and the No. 2 alarm lamp 77 lights up. A handling cylinder rotation sensor 48 that detects the rotational speed of the handling cylinder is connected to ports _a8 and _a9 , and when the handling cylinder becomes overloaded and the rotational speed becomes low, the handling cylinder rotation sensor 48 detects the rotational speed of the handling cylinder.
sets port _A8 to high level and lights up the deceleration instruction lamp 78, and also sets port _A9 to high level and instructs to stop if the handling cylinder is heavily loaded and its rotational speed becomes abnormally low. The lamp 79 is turned on. A paddy sensor 50 is connected to the port _a10 , which turns on when the amount of paddy in the topsatsuka 93 exceeds a predetermined level, and sets the port _a10 to a low level.When the sensor 50 is turned on, the topsatsuka lamp 70 lights up. It's becoming like that. The port _A11 is attached to the fuel tank 92, and when the fuel falls below a predetermined amount, it is exposed to the air and operates.
A fuel sensor 51 using a thermistor with a positive characteristic that sets the port _a11 to a low level is connected, and when the fuel sensor 51 is turned on, a fuel lamp 71 is lit. A cutter sensor 52 is connected to the port _a12 , which sets the port _a12 to a low level when a clogging of the straw cutter in the straw waste processing section 94 located at the rear of the machine is detected. The katsuta lamp 72 is turned on. Furthermore, a buzzer stop switch 53 is connected to port a ₁₃ to stop sounding an alarm buzzer 54, which will be described later, and when the switch 53 is turned on, the port
_a13 is set to low level. On the other hand, the output ports b ₁ to _{b 3} each have lamps 61 to 63 of a master lamp 60 consisting of three types of lamps.
are connected, and when each output port b ₁ , b ₂ , b ₃ becomes low level, the lamps 61 , 62 , 63 light up, respectively. The master lamp 60 logically judges the status of all the switches and sensors 41 to 48 and 50 to 52, and lights or blinks each lamp 61 to 63 in accordance with the degree and condition of the abnormality. It is a blue lamp that lights up continuously when the work is being carried out normally, and flashes when the work is not in progress even though each part is normal, and 62 indicates that the degree of abnormality is relatively minor. Yes, it is possible to continue the work, but if left as is, the abnormality will expand and cause loss of grain, etc. This is a yellow lamp that flashes, and 63 is a yellow lamp that flashes if the work is not continued unless immediate action is taken. This is a red lamp that flashes in the event of a highly dangerous abnormality that would make the system inoperable. In addition, a buzzer 54 that sounds when the low level of the port b ₄ is connected to the output port b ₄ .
is connected, and the buzzer 54 has a yellow lamp 62
When the red lamp 63 blinks, the alarm sounds intermittently, and when the red lamp 63 blinks, it sounds continuously. Now, regarding the control of the master lamp 60 and the buzzer 54 by the microcomputer 10, the first
The details will be explained based on the table. Table 1 shows the input signals of each input port _a1 to _a12 of the input/output interface 12 and the master lamp 6.
0 indicates the operating status of each of the lamps 61 to 63 and the buzzer 54.H indicates that the input signal of each port _a1 to _a12 is at a high level, and L indicates a low level. In addition, when the input signal is unrelated to the control or is undefined, it is represented by -. Each input port a ₁ and a ₂ becomes high level when the threshing switch 41 and the reaping switch 42 are turned on, and each input port a ₃ to a ₁₂ becomes a high level when a sensor connected to each detects an _abnormality . , a ₇ , a ₈ , a ₉ , a ₁₀
is at high level, ports _a4 , _a5 , _a6 , _a11 , and _a12 are at low level, and lamps 74 to 79 and 70 respectively
~72 lights up. Now, referring to the contents of each column in Table 1, the first column indicates that the reaping switch 42 is off, the input port _a1 is at low level, and the charging circuit 43 and oil pressure sensor 44 have both detected an abnormality. port a ₃
is at high level and port _A4 is at low level. In this case, the charging circuit and hydraulic circuit are normal, and since the threshing switch 41 is off, it is assumed that the master lamp 60 is not in the working state yet.
All lamps 61 to 63 are turned off, and the buzzer 5 is turned off.
4 does not sound. This is because when the power is turned on but the engine is not started, the charging circuit does not start charging and the pressure in the hydraulic circuit is low even though the charging circuit and hydraulic circuit are normal. Since it does not rise, ports _A3 and _A4 are in a state where an abnormality has been detected.In this case, the power is turned on under the assumption that the charging circuit and hydraulic circuit will not become abnormal at the same time, but the It is assumed that the engine has not been started and the threshing switch 41 remains off, so none of the lamps 61 to 63 and the buzzer 54 are activated, assuming that they are not in a working state. The second column or third column indicates that in such a state, if the fuel sensor 51 or paddy sensor 50 is on and the input port _A11 or _A10 is at low level or high level, the yellow lamp 62 will blink. At the same time, the buzzer 54 is made to sound intermittently. This is before the work begins, but the fuel sensor 51
Even if the paddy sensor 50 is turned on, there is still plenty of fuel, so the work will not become impossible immediately.Also, even if the paddy sensor 50 is turned on and left unattended, the paddy inside the topsatsuka 93 will spill out, resulting in a loss of paddy, but the work itself will not be interrupted. is not affected and it is possible to start the work, but in such a case, the yellow lamp 62 is flashed and the buzzer 54 is made to sound intermittently to alert the driver before starting the work. . (However, in this case, it is necessary that the sensors that cause the red lamp 63 to blink do not detect any abnormality, that is, ports a ₆ and a ₁₂ must be at high level and ports a ₇ and a ₉ must be at low level. ) In the states in columns 4 to 6, the charging circuit 43 and oil pressure sensor 44 are both operating normally, and port _A3 is at low level and port _A4 is at high level, that is, the engine has not been started. When the charging circuit 43 is normal, the hydraulic sensor 44 detects that the hydraulic circuit is normal, and the other sensors also detect that the monitoring target is normal, the threshing switch 41 , when one or both of the reaping switches 42 are off, the blue lamp 6
1 flashes, and since each part is normal, both the threshing and reaping switches 41 and 42 are turned on to prompt the start of work. When the threshing switch 41 and the reaping switch 42 are both turned on in the state shown in the 17th column, the blue lamp 6 indicates that the work is in progress.
1 is lit continuously. The states in columns 7 and 8 indicate that when either the charging circuit 43 or the oil pressure sensor 44 detects an abnormality, the red lamp 63
This indicates that the buzzer 54 is made to continuously sound while blinking. This means that if either the charging circuit 43 or the oil pressure sensor 44 is normal, the engine has been started, and the other is definitely abnormal, prompting immediate action. The condition in the ninth column indicates that the charging liquid is low when the engine is started (that is, the charging circuit 43 and the hydraulic circuit are normal, the input port _A3 is at low level, and the input _{port A4} is at high level), and the charging liquid sensor 45 is turned on and port _A5 becomes low level, the yellow lamp 62 flashes and the buzzer 54 sounds intermittently. (However, in this case, the sensors that make the red lamp 63 blink have not detected any abnormality, that is, ports a ₃ , a ₇ , a ₉ are at low level, ports a ₄ , a ₆ ,
_A12 must be at a high level. ) The state in the 10th column is that when the water temperature sensor 46 is turned on and the input port _A6 becomes low level, the other switches,
This indicates that the red lamp 63 blinks and the buzzer 54 sounds continuously regardless of the status of the sensor or the like. The state in column 11 means that when the threshing switch 41 and the reaping switch 42 are on, the handling barrel rotation sensor 48 detects an abnormally heavy load on the handling barrel and sets port A ₉ to a high level to stop the machine. Then, the red lamp 63 flashes, indicating that the buzzer 54 will sound continuously. The status in the 12th or 13th column is the threshing switch 41.
is on and port a ₁ is at a high level, the No. ₂ screw rotation sensor 47 detects an overload on the no.
When a blockage is detected and the port a ₁₂ becomes low level, the red lamp 63 flashes and the buzzer 54 continuously sounds. The conditions in columns 14 to 16 are when the engine is rotating (port
_A3 is low level, port _A4 is high level), the fuel sensor 51 is turned on, port _A11 is low level,
Paddy sensor 50 is turned on and port _A10 is at high level,
Alternatively, when the handling torso rotation sensor 48 detects an overload on the handling torso and sets port _A8 to high level to decelerate the aircraft, the yellow lamp 62 flashes and the buzzer 54 is activated.
This indicates that the machine beeps intermittently. (In this case, the sensors, etc. that lead to the red lamp 63 flashing are not detecting any abnormality, that is, ports a ₃ , a ₇ , and a ₉ are at low level, and ports a ₄ , a ₅ , a ₆ , and a ₁₂ are at high level.) ) In the 17th column, as mentioned above, the threshing switch 41 and the reaping switch 42 are on, and all other sensors etc. are detected to be normal.
In other words, when the working condition is normal, the blue lamp 61 is turned on.
This indicates that the light is on. The state in the 18th column is that when the threshing switch 41 is off, port _A1 is at low level, and the engine is not rotating (port _A3 is at high level, port _A4 is at low level), the charging liquid sensor 45 is activated. turn on port
When _a5 is at a low level, the yellow lamp 62 flashes and the buzzer 54 sounds intermittently. The lighting and sounding control of the master lamp 60 and the buzzer 54 is performed based on Table 1, but if a condition other than the one in Table 1 appears, the yellow lamp 62 is flashed but the buzzer 54 is not made to sound. It's summery. Furthermore, when the key switch 3 is turned on, a lamp check is performed in which all the lamps 61 to 63 of the master lamp 60 are turned on for several seconds, and during this period, even if a sensor or the like detects an abnormality, the master lamp 60 is turned on for an alarm. , the buzzer 54 is not driven. The sounding of the buzzer 54 is stopped by operating the buzzer stop switch 53 and turning it on, but the master lamp 60 and each alarm lamp 70 to 79 are lit until each sensor returns to its normal state. Even if multiple sensors detect an abnormality and the buzzer 54 sounds, the buzzer 54 will be turned on by turning on the buzzer stop switch 53.
The sound will stop. FIG. 3 is a plan view of the vicinity of the driver's seat of the present invention machine, in which the aforementioned master lamp 60 is provided approximately in the center of the front panel 91 in front of the driver's seat U, and from the left side, a blue lamp 61, a yellow lamp 62 ,
The red lamps 63 are arranged in parallel. Furthermore, the aforementioned warning lamps 70 to 79 are provided at the front of the side panel 95 on the left side of the driver's seat U. The operation of the inventive machine constructed as described above is as follows. , first, when the key switch 3 is turned on, the microcomputer 10 turns on the master lamp 60.
A lamp check is performed by lighting all lamps 61 to 63 for a few seconds to confirm that the microcomputer 10 is operating normally and that each lamp 61 to 63 is
The driver is now asked to confirm that the system is normal. Thereafter, the master lamp 60 is turned on, the buzzer 54 is sounded, etc. based on the logical judgment shown in Table 1. That is, while the engine is rotating (input port _A3 is at low level and input port _A4 is at high level) and all sensors are not detecting any abnormality, either or both of the threshing switch 41 and the reaping switch 42 are turned off. If it is off, that is, in columns 4 to 6 of Table 1, which are not in the working state, the blue lamp 61 is flashed to prompt the start of work, and the working state is in which both the threshing switch 41 and the reaping switch 42 are on. In the case of column 17 of Table 1, the blue lamp 61 is turned on, and the work is started with the threshing switch 41 or the reaping switch 42 forgotten to be turned on, thereby pushing down the rice or clogging the conveyance section. is prevented. In addition, if there is an abnormality in one of the monitoring targets and it is possible to continue working for a while even if the abnormality is left unattended, in other words, if the charging liquid falls below a predetermined value and port _A5 becomes low level. In the case of columns 9 and 11 in Table 1, the handling cylinder rotation sensor 48 detects an overload and port _A8 becomes high level to instruct deceleration.
In the case of column 16 of Table 1, in the case of columns 3 and 15 of Table 1, where the amount of paddy in the topsatsuka 93 exceeds the predetermined amount and port a ₁₀ becomes high level, the amount of fuel in the topsatsuka 93 becomes higher than the predetermined amount and port a ₁₁ becomes high level. In the case of rows 2 and 14 of Table 1 where the level is low, the yellow lamp 62 is flashed and the buzzer 54 is sounded intermittently to prompt a predetermined action. In this case, it is necessary that no abnormality has occurred in the monitored object that would cause the red lamp 63 to flash. Furthermore, if the abnormality to be monitored has a risk of causing a dangerous situation or a serious malfunction if left untreated, and it is necessary to immediately stop the aircraft and deal with it, in other words, the charging circuit 43
In the case shown in column 7 of Table 1 where the port _a3 becomes high level due to an abnormality in the hydraulic circuit, the hydraulic circuit becomes abnormal and the port
In the case of column 8 of Table 1 where a ₄ became low level, in the case of column 10 of table 1 where port a ₆ became low level due to overheating, screw No. 2 became overloaded and port a ₇ became low level. In the case of column 12 of Table 1 where the level has become high, in the case of column 11 of Table 1 where the handling trunk has become heavily loaded and port _A4 has become high level to stop the aircraft, in the case of column 11 of Table 1, the straw disposal section is clogged. In the case of column 13 in Table 1 where port a ₁₂ becomes low level, the red lamp 63 will flash and the buzzer 54 will sound continuously to stop the aircraft and prompt you to take the prescribed measures immediately. be. Furthermore, if a situation other than those shown in Table 1 occurs, for example, even though the threshing switch 41 is off and port _A1 is at a low level, the No. 2 screw rotation sensor 47 is on and port _A7 is at a high level. (i.e., when a ₁ in column 12 of Table 1 is "L"),
If the threshing switch 41 is not turned on, the No. 2 screw will not rotate, and the No. 2 screw rotation sensor 4 will not rotate.
7 is on even though it is not supposed to be on, and it is obvious that the signal from threshing switch 41 or 2
This is a case where one of the signals from the number screw rotation sensor 47 is incorrect, and in such a case, the yellow lamp 62 is flashed to alert the driver. At this time, it is thought that the No. 2 screw is not overloaded, but that the sensor itself is abnormal, so the buzzer 54 is not sounded, and the driver is made to distinguish that the situation is different from the one in Table 1. ing. In case of intermittent or continuous sounding of the buzzer 54, the sounding of the buzzer 54 can be stopped by operating the buzzer stop switch 53 and setting the port _a13 to a low level. In this case, the lighting and blinking of the yellow lamp 62 and the red lamp 63 continue until the sensors and the like related to the lighting and blinking detect that they are normal. In addition, multiple sensors etc. detect an abnormality,
Even if the mode is set to multiple columns in Table 1, turning on the buzzer stop switch 53 will cause the buzzer 5 to turn on.
4 stops. Buzzer 5 after stopping Buzzer 54
The reset for buzzer 4 to sound is performed when the sensor, etc. that caused the buzzer 54 to sound goes from an abnormal detection state to a normal detection state, and when the sensor, etc. other than the sensor that caused the buzzer 54 to sound is abnormal. is detected, or when the key switch 3 is turned off once. In addition, in the above-mentioned embodiment, the sensors etc. 41 to 4
8,

【table】

[Table] When 50 to 52 are turned on, the alarm lamps 70 to 79 are turned on directly, but instead of this, each lamp is made to blink or turn on depending on the status of multiple sensors, etc. It may also be a configuration. As described in detail above, the present invention includes a means for separately monitoring the operation of a plurality of monitoring targets, a means for individually reporting an abnormality in the operation of each monitoring target based on the monitoring result of each monitoring means, and a means for individually monitoring the operation of a plurality of monitoring targets. and means for issuing a corresponding alarm based on the judgment result, and when the operation mode is unreasonable, the alarm is issued in a different manner. Since the system is designed to operate in a controlled manner, it is possible to immediately determine how to respond to the occurrence of an abnormality even in work machines that require complex operations. The present invention has excellent effects such that even a person can immediately and stably respond to the occurrence of an abnormality, and can also discover abnormalities in monitoring means such as sensors.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention.
2 is a schematic side view of the machine of the present invention, FIG. 2 is an electrical circuit diagram of the main part thereof, and FIG. 3 is a schematic plan view of the area around the driver's seat of the machine of the present invention. 3... Key switch, 10... Microcomputer, 41... Threshing switch, 42... Reaping switch, 43... Charging circuit, 44... Oil pressure sensor, 45... Charge liquid sensor, 46... Water temperature sensor, 47... ...No. 2 screw rotation sensor, 48...
...Handling cylinder rotation sensor, 50...Paddy sensor, 51...
Fuel sensor, 52...Katsuta sensor, 54...Buzzer, 60...Master lamp, 70-79...Warning lamp, 91...Front panel, 95...Side panel.

Claims (1)

[Claims] 1. Means for separately monitoring the operation of multiple monitoring targets, means for separately reporting abnormalities in the operation of each monitoring target based on the monitoring results of each monitoring means, and means for reporting the monitoring results of monitoring the operation of multiple monitoring targets. The device is equipped with means for determining an operating mode based on a combination, and means for issuing a corresponding alarm based on the judgment result, and configured to operate the alarm in a different mode if the operating mode is unreasonable. A work machine featuring: