JPH035214Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seeding sensor device for various seeding machines.

[Prior art] An impeller is rotatably provided in the middle of a sowing chute that guides seeds fed out from a feeding device, and falling of seeds is detected by the rotation of this impeller, and an alarm circuit is activated via a detection circuit. What made it work was
This has already been proposed in Japanese Utility Model Application Publication No. 12925/1983.

[Problem that the invention attempts to solve]

However, with this method, it was not possible to change the sensitivity setting of the detection circuit depending on the type of seed, etc. Therefore, if the seeding interval can be large,
There is a problem of displaying this as an abnormality or displaying it as normal even though the sowing interval should be reduced.

[Means for solving problems]

The present invention was provided with the aim of solving such conventional problems, and as a specific means for that purpose, in a device that feeds out seeds intermittently in multiple rows, a method corresponding to each row is provided. A plurality of indicators 40 are provided for each row, one alarm buzzer 41 is provided for each row, and a plurality of seed sensor units 32 for detecting falling seeds from each row are provided for each row. is,
A pulse signal generating section 34 that is triggered by the detection signal from the seed sensor section 32 and generates a pulse signal with a predetermined pulse width; and a pulse signal generating section 34 that adjusts the pulse width of the pulse signal b generated by the pulse signal generating section 34. A plurality of width adjustment sections 35 are provided corresponding to the seed sensor sections 32, and when the pulse signal b of each pulse signal generation section 34 is interrupted, the display 40 corresponding to the pulse signal generation section 34 is adjusted. The display 40 and the alarm buzzer 41 are connected to the pulse signal b of the pulse signal generator 34 so that the alarm buzzer 41 is activated when the pulse signal b of any of the pulse signal generators 34 is interrupted. It is controlled by.

[Effect]

The pulse signal generator 34 is retriggered by the detection signal a detected by the seeding sensor 32. During normal seeding, the pulse signal b does not fall.
However, if variations occur in the seeding state, the interval between the detection signals a becomes large, and the pulse signal b falls. The notification section 40 operates based on the difference in this pulse signal b, and notifies the seeding state.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. FIGS. 2 and 3 illustrate a submerged soil direct seeding machine, and 1 is a machine body equipped with an engine, etc., which is driven through transmission cases 2 on both sides. A ring 3 is provided. 4
is a support frame that protrudes rearward from the fuselage 1,
A handle 5 is attached to the rear end via an upwardly curved part.
is provided. 6 is a main float, which is arranged on the lower side of the fuselage 1. Reference numeral 7 denotes a transmission case, which is supported by the frame 4 by a support shaft 8. The transmission case 7 is provided with a pair of upper and lower tool bars 9 and 10 that extend left and right, and the upper tool bar 9 has a seed tank 11 and the lower tool bar 10.
A pair of seeding floats 12 are provided on each side.

The seed tank 11 has a feeding device 13 on the lower side. The feeding device 13 includes a feeding roll 14 rotatably provided at the lower part of the seed tank 11, and is configured to intermittently feed the seeds A in the seed tank 11 downward by rotation of the feeding roll 14. has been done. A transmission case 7 is attached to the left and right feeding rolls 14.
A drive shaft 15 mounted on the shaft is inserted through the drive shaft 15, and the feed roll 14 is rotationally driven by the drive shaft 15. A seeding chute 16 is provided below the feeding device 13. The sowing chute 16 has a bifurcated branch part 17 on the lower side, and is configured to guide the intermittently fed seeds A into each branch part 17 in two for sowing. Therefore, in this case, it is possible to sow four rows.

The seeding float 12 is connected to a link 18 fixed to the lower toolbar 10. A notch 19 is formed in the left and right sides of the seeding float 12 so as to be recessed from the rear side, and a furrower 20 and a soil covering member 21 are provided in the front and rear corresponding to the notch 19, and a groove cutter 20 and a soil covering member 21 are provided in the front and rear in correspondence with the notch 19. A seeding guide plate 22 that connects the lower end of each branch portion 17 of the seeding chute 16 is provided at the seeding chute 16 .

In the middle of the branch part 17 of the seeding chute 16,
As shown in FIGS. 4 and 5, a bulge 23 is formed, and a rotating shaft 24 is provided within the bulge 23
An impeller 26 including blades 25 is provided. The impeller 26 receives the seeds A intermittently dispensed from the dispensing device 13 on its blades 25 and rotates in the direction of the arrow. A rotating disk 29 is attached to one end of the rotating shaft 24, as shown in FIG.
0,31 are provided. Note that the impeller 26, the rotary disk 29, and the light emitters and receivers 30 and 31 constitute a seeding sensor section 32.

FIG. 1 shows an electric circuit, 33 is a gate circuit,
Reference numeral 34 denotes a pulse signal transmitting section, which is composed of, for example, a retrigger type monostable multivibrator, etc., which can be retriggered by a detection signal from the light receiver 31 of the seeding sensor section 32, and generates a pulse signal with a predetermined pulse width. Reference numeral 35 denotes a pulse width adjustment section, which is composed of a capacitor 36 and a variable resistor 37, and adjusts the variable resistor 37 as appropriate depending on the type of seed A.
The pulse width of the pulse signal can be changed arbitrarily.
38 is a NAND gate, 39 is a light emitting diode that constitutes the display 40, and the pulse signal generator 3
It is driven by a signal obtained by inverting the pulse signal from 4 at the NAND gate 38, and emits light when the pulse signal is interrupted. Reference numeral 41 denotes an alarm buzzer, which is driven by a transistor 42. 4
3 is a NAND gate, into which a pulse signal from the pulse signal generator 34 of each strip (4 strips in this embodiment) is inputted, and a buzzer 41 is activated when an abnormality occurs in any strip. It's getting old.

In the above configuration, at the time of sowing, the feed roll 14 is rotated by the drive shaft 15 to feed out the seeds A in the seed tank 11, and the seeds A are dropped through the sowing chute 16, and the seeds A are sown directly into the grooves 44 formed by the furrower 20. , cover with soil with soil covering member 21. On the other hand, when the seeds A fall, the impeller 26 rotates, and the rotation of the rotary disk 29 interrupts the light from the light projector 30 to the light receiver 31. This rotation is proportional to the amount of sowing, and remains approximately constant under normal sowing conditions, and the light receiving section 31 generates a detection signal a at regular intervals as shown in FIG. Then, when the signal a rises, the pulse signal generator 34 is triggered, and the pulse signal generator 4 generates a pulse signal b that is larger than the interval of the signal a. While the detection signal a is generated at intervals smaller than the pulse width, the pulse signal generator 34 is triggered, so the pulse signal b is not interrupted at all, and therefore both the light emitting diode 39 and the buzzer 41 are activated. I don't work.

When variations occur in the seeding state, the interval between the detection signals a becomes large, so when the time corresponding to the pulse width of the pulse signal b has elapsed, the pulse signal generator 34
The signal b falls, a break occurs in the pulse signal b, the light emitting diode 39 indicates an abnormality in the corresponding strip, and the buzzer 41 sounds to warn that there is an abnormality in one of the strips. The light emission from the light emitting diode 39 and the alarm from the buzzer 41 occur only during the period when the pulse signal b is interrupted.

If it is necessary to change the sowing pitch depending on the type of seeds A, or if the rotation speed of the impeller 26 differs depending on the weight of the seeds A, the variable resistance 37
The pulse width of the pulse signal b can be adjusted according to the conditions of the seeds A, and it is possible to prevent malfunctions in which normality becomes abnormal or abnormality becomes normal.

The sowing sensor section 32 is not limited to the embodiment, and may detect the falling of the seeds A directly or indirectly through a lens or the like by optical means. It is also possible to attach the body and detect it with a reed switch or the like.

The light emitting diode 39 of the display 40 may be configured to emit light when an abnormality occurs.

[Effect of the invention] According to the present invention, if an abnormality in the sowing condition occurs in any one of the plurality of rows, the display 40 and the alarm buzzer 41 are activated, so that the abnormality in the sowing condition can be easily detected. In addition to being able to discriminate, the pulse signal generator 3
The pulse signal b generated in step 4 is sent to the pulse width adjustment section 35.
Since the settings can be adjusted according to the seed conditions such as seed type and weight,
It is possible to prevent malfunctions that would cause normal to be abnormal and abnormal to be normal.

Further, when the pulse signal b of the pulse signal generator 34 is interrupted, the display 40 corresponding to the pulse signal generator 34 is activated, and when the pulse signal b of any pulse signal generator 34 is interrupted, Since the display 40 and the alarm buzzer 41 are controlled by the pulse signal b from the pulse signal generator 34 so that the alarm buzzer 41 is activated, if there is an abnormality in the sowing condition in any one of the plurality of rows. (When the seed feeding interval becomes slow or the seed feeding stops), the indicator 40 corresponding to that row is activated and the alarm buzzer 41 is activated. By the operation of the sowing system, it is possible to clearly and quickly know by hearing that an abnormality in the sowing condition has occurred, and furthermore, it is possible to clearly and easily know which row has a sowing abnormality through the display 40, Therefore, it is not only possible to quickly know if there is an abnormality in the sowing condition, but also to clearly and easily know which row has a sowing abnormality among multiple rows, and to repair the equipment or replenish seeds afterwards. etc. can be done properly and smoothly without making mistakes, and its practical effects are significant.

[Brief explanation of the drawing]

The drawings illustrate one embodiment of the present invention, in which Fig. 1 is an electric circuit diagram, Fig. 2 is a side view, and Fig. 3 is a side view.
4 is a sectional view of the seeding sensor section, FIG. 5 is a view taken along the - arrow in FIG. 4, FIG. 6 is an explanatory view of the rotary disk, and FIG. 7 is an explanatory view of the operation. 16... Seeding chute, 26... Impeller, 32
... Seeding sensor section, 34 ... Pulse signal generation section,
35... Pulse width adjustment section, 40... Notification section.

Claims (1)

[Claims for Utility Model Registration] In a device in which multiple rows of seeds are intermittently dispensed, a plurality of indicators 40 are provided corresponding to each row, and one alarm buzzer 41 is provided for each row. A plurality of seed sensor units 32 are provided corresponding to each row to detect falling seeds from each row.
A pulse signal generating section 34 that is retriggered by the detection signal from the seed sensor section 32 and generates a pulse signal with a predetermined pulse width; and a pulse signal generating section 34 that adjusts the pulse width of the pulse signal b generated by the pulse signal generating section 34. A plurality of width adjustment sections 35 are provided corresponding to the seed sensor sections 32, and when the pulse signal b of each pulse signal generation section 34 is interrupted, the display 40 corresponding to the pulse signal generation section 34 is adjusted. The display 40 and the alarm buzzer 41 are connected to the pulse signal b of the pulse signal generator 34 so that the alarm buzzer 41 is activated when the pulse signal b of any of the pulse signal generators 34 is interrupted. A seeding sensor device characterized by being controlled by.