JPH055864Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Technical field This invention is used for a combine harvester that travels around a farm to reap crops and harvest grain. It relates to an alarm device that gives a warning.

(b) Summary of the invention The combine harvester alarm system according to this invention can stop the alarm that warns that the hopper is full of grain by operating a reset button, and prevents noise pollution caused by continuous operation of the alarm system. This is how it was done.

(c) Prior art and its disadvantages Combine harvesters separate harvested grain culms into grains and culm waste, and after sorting, store the grains in a hopper. There is a limit to the amount of grain that can be stored in this hopper, and when the hopper is full of grains, the harvesting operation must be stopped and the grains in the hopper must be transferred to a transportation vehicle. . However, because it is not possible to see the storage status inside the hopper during harvesting, it is not possible to know when to reload the grain.

For this reason, conventionally, a fir sensor was provided above the grain storage section in the hopper, and when this sensor was turned on, an alarm was issued to prompt grain reloading work.

However, with the above-mentioned conventional alarm device, once the alarm is issued, the alarm does not stop unless the grain is removed and the fir sensor is turned off, and the alarm continues to sound during the grain reloading process, causing discomfort to the worker. It had the disadvantage of causing harm due to noise.

(d) Purpose of the invention In view of the above-mentioned conventional drawbacks, the purpose of this invention is to provide a reset button to stop the alarm when it occurs.
The alarm can be stopped after the operator recognizes that the hopper is full of grain, and the alarm lamp can continue to be lit regardless of the operation of the reset button. To provide an alarm device for a combine harvester that can eliminate the noise pollution caused by the alarm continuing to sound until the end of work, and also allows a worker to easily recognize that the harvester is full even after the alarm has stopped. It's about doing.

(e) Structure and effect of the invention The combine harvester alarm device of this invention includes a horn button, a threshing sensor that detects that threshing is in progress, and a fir sensor that detects when the hopper is full of grain. An alarm device that generates an alarm when a button is operated or when fir alarm conditions are established, including that the threshing sensor and fir sensor are in the on state, is equipped with a reset button, so that the alarm can be reset while the alarm is being generated due to the establishment of the fir alarm condition. The present invention is characterized by comprising an alarm stop means that stops the alarm when the button is operated, and an alarm lamp that lights up continuously until the fir alarm condition is canceled regardless of the operation of the reset button.

With the above configuration, according to this invention, when the hopper is full of grain and the fir alarm condition is satisfied and an alarm is issued, the alarm can be stopped by operating the reset button. On the other hand, an alarm lamp is lit at the same time as the alarm is generated, but this alarm lamp continues to be lit until the fir alarm condition is canceled, regardless of the operation of the reset button. Therefore, after the operator recognizes the full state of grain in the hopper due to the generation of the alarm, the alarm can be immediately stopped by operating the reset button, and the alarm does not continue to sound even after recognizing the full state. This has the advantage of not only being able to prevent damage caused by noise, but also allowing the operator to easily recognize the fullness of the grains by continuously lighting the alarm lamp.

(f) Embodiment FIG. 2 is a schematic diagram showing the configuration of a combine harvester in which a warning device according to an embodiment of this invention is used.

Combine 1 has a pair of left and right crawlers 7 below.
is provided, and the combine 1 is moved by the drive of this crawler 7. A reaping section 2 is provided at the front of the combine 1. The reaping section 2 guides the front crop 20 into the combine harvester 1 and reaps it from the base of the plant.

A milling chamber 4 is formed in the center of the main body of the combine 1. A plow barrel 5 having a large number of plow teeth 6 is rotatably provided in the plow chamber 4.
Grain culms harvested by the reaping section 2 are guided into the threshing chamber 4 via the conveyance section 8, threshed between the receiving net 16 and the threshing drum 5, and separated into grains and culm waste. Among them, the grains fall downward from the receiving net 16 and are sorted by the trough 15 and the like. The culm waste is guided to the discharge section 13 by the feed chain 18,
released to the outside.

The grains that fall downward from the receiving net 16 and are sorted are stored in the grain hopper 10 as fine grains.
This grain hopper 10 is provided with a fir sensor 9.

An operating section 3 is formed in the upper front part of the combine 1. This operating section 3 is provided with an operating lever 12, which allows the threshing operation to be selected. A threshing sensor 1 is located below this operating lever 12.
7 is provided. The operating section 3 is provided with a horn button 14. When the horn button 14 is operated, a buzzer (not shown) is activated to generate an alarm.

In the above configuration, the fir sensor 9 detects that the inside of the grain hopper 10 is full of grains. Further, the threshing sensor 17 detects that threshing work has been selected.

FIG. 3 is a circuit diagram of the alarm device of the combine harvester.

The ON signals of the fir sensor 9 and the threshing sensor 17 are input to input ports P3 and P4 of the microcomputer 31, which constitutes a part of the control section. A warning lamp 33 is arranged between the fir sensor 9 and the power source V1. Microcomputer 3
A buzzer-on signal is output from output port P1 of No. 1 to buzzer 32 via transistor Q1. The horn button 14 lowers the connector terminal of the transistor Q1 to the "L" level. Further, the input port P2 of the microcomputer 31 is used as a monitor port, and monitors the collector level of the transistor Q1.

With the above configuration, when the horn button 14 is operated, current flows from the power source V1 to the buzzer 32 and an alarm is issued. On the other hand, when the threshing sensor 17 and the fir sensor 9 are turned on, their on signals are input to the microcomputer 31. When the microcomputer 31 receives the ON signals from both sensors,
A pulse signal is output to the transistor Q1, and the buzzer 32 sounds intermittently as an alarm. When the horn button 14 is operated while the transistor Q1 is turned off by the pulse signal, the transistor Q1
The collector level of is "L". At this time, the microcomputer 31 monitors this state at the input port P2 and stops outputting the pulse signal. That is, if the horn button 14 is operated while the buzzer 32 is intermittently sounding, the buzzer 32 stops sounding. Further, when the fir sensor 9 is turned on, a current flows from the power source V1 to the alarm lamp 33, which lights up.

FIG. 1 is a flowchart showing the operation of the alarm device of the combine harvester.

During the threshing operation, the alarm device will alert you at step n1 (hereinafter "step ni" will simply be referred to as "ni").
A timer T determines whether time t1 has elapsed. When the timer T measures time t1 at n1, the process advances to n2. That is, steps n2 and subsequent steps are executed every time t1, and at n2, it is determined whether or not the threshing sensor 17 is turned on. Further, in n3, it is determined whether or not the fir sensor 9 is turned on.
If either the threshing sensor 17 or the fir sensor 9 is not turned on at either n2 or n3, the process advances to n4, sets the flag F to 0, and returns to n1.
This flag F stores the state of whether or not the fuzzer 32 is to be sounded intermittently under the condition that both the threshing sensor 17 and the fir sensor 9 are on. If set to "1", intermittent ringing is not performed, and if set to "0", intermittent ringing is performed. After starting the threshing operation,
n1 → n2 → until grains are full in hopper 10
The operation n3→n4→n1 is repeated.

When the hopper 10 is full of grains and the fir sensor 9 is turned on at n3, the process proceeds to n5. At n5, it is determined whether the flag F is 0 or not. If the flag F is not 0 at n5, the process returns to n1.

If the flag F is 0, the process proceeds to n6, where it is determined whether the content of the buzzer buffer is 0 or not. This buzzer buffer is an output buffer for outputting data to the output port P1. If the content of the buzzer buffer is 0 in n6,
Proceed to step n7 and check the collector level of transistor Q1 at monitor port P2. n7
If the collector level is “L” in
Proceed to n8 and set flag F to 1. This state is a state in which the horn button 14 is operated during the off period during which the buzzer 32 is ringing intermittently. If the output from the previous buzzer buffer is not 0 on n6, and
If the input signal is not "L" at n7, skip to n9.

n9 to n12 are programs that output pulse signals to the transistor Q1 in order to cause the buzzer 32 to sound intermittently. First, in n9, timer T is set at time t2.
It is determined whether or not the time has been measured. When the time t2 is measured at n9, the process proceeds to n10, inverts the contents of the buzzer buffer, and proceeds to n11. In other words, if the content of the buzzer buffer is "0", it becomes "1",
If it is “1”, it is set to “0”. time t2 at n9
If not, go directly to n11 and check the contents of the buzzer buffer. If the content of the buzzer buffer is "1", the process advances to n12, outputs an on signal, and returns to n1. If it is "1", it returns directly to n1.

FIG. 4 is a timing chart of the above alarm device.

When the threshing work time starts at time ta, the threshing sensor 17 is turned on, and every time t1 elapses, n1→n2→
Repeat the operation n3→n4→n1. As the threshing work progresses and the hopper 10 becomes full of grains, the fir sensor 9 turns on at time tb. When the fir sensor 9 is turned on, the process advances from n3 to n5. The fir alarm condition is that the threshing sensor 17 and the fir sensor 9 are turned on,
When this condition is met, proceed to n5. When passing through n5 for the first time, the content of flag F is 0, so
Proceed as n5 → n6.

When passing through n6 for the first time, the content of the buzzer buffer is “0”, and the monitor port P2 is connected to n7.
A check is made. At this time, transistor Q
1 is in the off state, so the monitor port P
The collector level of the transistor Q1 in No. 2 is "H" when the horn button 14 is not operated, and becomes "L" when the horn button 14 is operated. When the horn button 14 is not operated when passing through n7, the monitor port P2 is in the "H" state. Therefore n7→
Proceed with n9.

The contents of the buzzer buffer are inverted at a period of time t2 by the operations of n9 and n10. In n11, the contents of the buzzer buffer are from output port P1 to transistor Q.
1 is output. Buzzer message content is “1”
In this case, a current flows from the power supply V1 to the transistor Q1 side, and the buzzer 32 is turned on.

After this, when time t1 elapses at n1, the process progresses as n2→n3→n5. If the content of the buzzer buffer is now "1", the program directly skips to n9 and determines whether time t2 has elapsed. The operations of n1 to n3→n5→n6→n9→n11→n1 are repeated, and the buzzer remains on until time t2 has elapsed. When the period t2 elapses at n9, the process advances to n10, where the contents of the buzzer buffer are inverted, so no buzzer-on signal is output at n12. Therefore, the buzzer 32
No current flows and the switch turns off. n1～n3→n5～n9→
The operation from n11 to n7 is repeated and the buzzer 32 remains off until time t2 has elapsed. In this way, by inverting the contents of the buzzer buffer every time tn2 and outputting an on signal only when the contents are "1", a pulse signal with a cycle of 2.times.t2 is output to the transistor Q1. As a result, the buzzer 32 starts beeping intermittently from time tb.

During the buzzer off period of the above operation, the process proceeds from n6 to n7 and the contents of the monitor port P2 are checked. At time tc, when the horn button 14 is operated while the buzzer 32 is off, the monitor port P2 goes into the "L" state and the process proceeds from n7 to n8. n8
When the contents of flag F are set to “1”, n1 → n2
→ n3 → n5 → n1 operations are performed, and the process does not proceed to n6 to n11. Therefore, the on signal of the buzzer 32 is not output, and the intermittent ringing is stopped. In the above
n5, n7 and n8 are the alarm stop means of this invention.

When grains are taken out from the hopper 10 and the fir sensor 9 is turned off at time td, the fir alarm condition is not satisfied. Therefore, the operation of n1→n2→n3→n4→n1 is repeated. When the fir sensor 9 is turned on again at time te, the sequence progresses from n3 to n5 to n6, and an alarm is issued by the intermittent sounding of the buzzer 32.

Further, after the alarm is stopped by operating the horn button 14 at time tf, the threshing operation may be interrupted at time tg. At this time, the fir alarm condition is temporarily not satisfied. When the threshing operation is restarted at time th, the sequence changes from n1 to n2 to n3 to n5 to n6, and the buzzer 32 starts beeping intermittently. In the above, n2 to n5 correspond to the re-warning means of this invention.

As described above, according to this embodiment, the buzzer 32
During the intermittent ringing, the content of the flag F is checked during the off period of the buzzer 32, and if the horn button 14 is operated during the off period, the output of the pulse signal to the transistor Q1 is stopped and the buzzer intermittent ringing is stopped. It can be stopped. Therefore,
After the operator recognizes from the alarm that the hopper is full of grain, he or she can stop the alarm by operating the horn button 14. Even after the alarm is stopped, it is checked whether the fir alarm condition is met, so when the condition is met, a new alarm can be issued. Further, since the horn button 14 also serves as the reset button of this invention, there is no need to provide a special button on the operating section, which can prevent an increase in cost and a deterioration in operability.

[Brief explanation of the drawing]

FIG. 1 is a flow chart showing the operation of the alarm device for a combine harvester according to an embodiment of the present invention, FIG. 2 is a schematic side view showing the structure of a combine harvester in which the alarm device is used, FIG. 3 is a circuit diagram of the alarm device, and FIG.
The figure shows the timing chart of the alarm device. 9: Fir sensor, 14: Horn button, 1
7...threshing sensor, 32...buzzer.

Claims (1)

[Scope of claim for utility model registration] (1) Equipped with a horn button, a threshing sensor that detects that threshing is in progress, and a fir sensor that detects when the hopper is full of grain, and when the horn button is operated or the threshing sensor An alarm device that generates an alarm when the fir alarm condition including that the fir alarm condition and the fir sensor are in the ON state is provided with a reset button, and when the reset button is operated while the alarm is generated due to the establishment of the fir alarm condition. an alarm stop means for stopping the alarm; an alarm lamp that lights continuously until the fir alarm condition is canceled regardless of the operation of the reset button;
Combine harvester alarm system. (2) The alarm device for a combine harvester according to claim 1, wherein the horn button also serves as the reset button.