JPH0429404Y2 - - Google Patents
Info
- Publication number
- JPH0429404Y2 JPH0429404Y2 JP9544686U JP9544686U JPH0429404Y2 JP H0429404 Y2 JPH0429404 Y2 JP H0429404Y2 JP 9544686 U JP9544686 U JP 9544686U JP 9544686 U JP9544686 U JP 9544686U JP H0429404 Y2 JPH0429404 Y2 JP H0429404Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- fertilizer
- electrode
- sensor
- metal plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000004720 fertilization Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000003337 fertilizer Substances 0.000 description 19
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Fertilizing (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、田植えと施肥作業とを同時に行う
ことのできる施肥田植機に用いる施肥センサに関
するもので、さらに詳しくは、２つの電極間に水
分を含んだ肥料が詰ることにより、この間の抵抗
値が∞から数KΩに変化することをもつて肥料の
詰りを検出しようとする施肥センサに関するもの
である。[Detailed explanation of the invention] (Field of industrial application) This invention relates to a fertilization sensor used in a fertilizing rice transplanter that can perform rice planting and fertilization at the same time. This relates to a fertilization sensor that attempts to detect clogging of fertilizer based on the fact that the resistance value changes from ∞ to several kilohms during this period due to clogging of fertilizer containing fertilizer.
（従来の技術）
従来この種の施肥センサは第４図に示すように
田植機ａの作溝器ｂに組込まれていて、この作溝
器ｂをネジb1等により田植機本体a1に取付ける。
ｃはゴム製の取付具、ｄはホツパー、ｅはロー
ト、ｆはセンサーハーネス、ｇはコードクラン
プ、ｈはコード、ｉはワイヤーハーネスバネ、ｊ
はカバーのボス部を示す。(Prior art) Conventionally, this type of fertilization sensor has been incorporated into a groove maker b of a rice transplanter a, as shown in FIG . Install.
c is a rubber fitting, d is a hopper, e is a funnel, f is a sensor harness, g is a cord clamp, h is a cord, i is a wire harness spring, j
indicates the boss part of the cover.
そして施肥センサは通常単一のステンレス製の
電極を側としていて、その反対側を単にボデイ
アースとしたものが用いられている。 Fertilization sensors usually have a single stainless steel electrode on one side, and the opposite side is simply the body ground.
（考案が解決しようとする問題点）
上述したようにステンレス等の金属材料の単一
の電極をとして用い、反対側を単にボデイアー
スとしたものでは、この側の電極とアース電極
との間に水分を含んだ肥料が接触することによ
り、肥料の電気分解による腐食作用が起きる。す
なわち電極が電蝕してその表面が腐食され、電極
間の抵抗値が増大するために、水分を含んだ肥料
が電極間に詰つてもその肥料の詰りを検出するこ
とができないというような不具合を有していた。(Problem to be solved by the invention) As mentioned above, if a single electrode made of a metal material such as stainless steel is used as a single electrode, and the opposite side is simply grounded as a body, there is moisture between the electrode on this side and the ground electrode. Contact with fertilizer containing fertilizer causes corrosion due to electrolysis of the fertilizer. In other words, the electrodes are electrolytically eroded, their surfaces corroded, and the resistance value between the electrodes increases, so even if moisture-containing fertilizer gets stuck between the electrodes, the clogging cannot be detected. It had
この考案は上記不具合を解消することをその目
的とするものである。 The purpose of this invention is to eliminate the above-mentioned problems.
（問題点を解決するための手段及び作用）
この考案は上記問題点に鑑みなされたものであ
つて、肥料に接する電極部材をカーボン含有の非
金属導電材料から構成し、２つの電極に金属板の
ブツシユをそれぞれ圧入し、この金属板ブツシユ
にコードのリード線をハンダ付して電極部材を形
成し、これを匡体に対してエポキシ樹脂等の充て
ん剤により充てんして取付け、施肥センサを構成
したもので、電極の電蝕を防止することができ、
電極間の抵抗値や電圧の変化を正確に検知して、
電極間の肥料の詰りを防止したものである。(Means and effects for solving the problem) This invention was devised in view of the above problem, and consists of an electrode member in contact with the fertilizer made of a carbon-containing non-metallic conductive material, and a metal plate attached to the two electrodes. Press-fit the bushings into each metal plate bushing, solder the lead wire of the cord to the metal plate bushing to form an electrode member, and then fill the casing with a filler such as epoxy resin and attach it to form the fertilization sensor. This can prevent galvanic corrosion of the electrodes.
Accurately detects changes in resistance and voltage between electrodes,
This prevents fertilizer from clogging between the electrodes.
（実施例） この考案の実施例を図面に基づいて説明する。(Example) An embodiment of this invention will be described based on the drawings.
第１図はこの考案に係るセンサを取付けた作溝
器でありａは一部を断面で示した側面図、ｂはＢ
−Ｂ矢視図、ｃはＣ−Ｃ矢視図である。 Figure 1 shows a groove cutter equipped with a sensor according to this invention, where a is a partially sectional side view, and b is B.
-B is a view taken along the arrow; c is a view taken along the line C-C.
図において１は作溝器でネジ等２1によつて取
付板２2を介して田植機の本体に取付けられる。
３は施肥センサ、４はセンサボデイでABS樹脂
等より形成されタツピングネジ１１1，１１2等に
よつて作溝器１に取付けられる。５はセンサボデ
イと一体の匡体でエポキシ樹脂等の充てん剤を封
入する。６1と７1で示した２つの電極は、電蝕さ
れないカーボン含有の非金属導電材によつて形成
されているために、リード線と直接ハンダ付けや
蝋付け等の溶着ができないので、第２図に示すよ
うに金属板のブツシユ８に圧入して一体とし、金
属板のブツシユ８とコード６2，７2のリード線９
１，９2とをハンダ付け１０して電極部材を形成
し、これを匡体５に対してエポキシ樹脂等の充て
ん剤によつて取付ける。 In the figure, reference numeral 1 denotes a trencher, which is attached to the main body of the rice transplanter via a mounting plate 2 2 with screws 2 1 .
Reference numeral 3 denotes a fertilization sensor, and 4 a sensor body made of ABS resin or the like, which is attached to the furrower 1 with tapping screws 11 1 , 11 2 or the like. 5 is a housing integrated with the sensor body, and a filler such as epoxy resin is sealed therein. The two electrodes shown in 6 1 and 7 1 are made of carbon-containing non-metallic conductive material that cannot be electrolytically eroded, so they cannot be directly welded to the lead wire by soldering, brazing, etc. As shown in Figure 2, the metal plate bushing 8 is press-fitted into one body, and the lead wires 9 of the cords 6 2 and 7 2 are connected to the metal plate bush 8 and the lead wires 9 of the cords 6 2 and 7 2 .
1 and 9 2 are soldered 10 to form an electrode member, and this is attached to the casing 5 using a filler such as epoxy resin.
そしてこのようにして得られた施肥センサ３を
第１図ａの右手側より作業器１の孔に嵌め込み、
施肥センサ３のボデイ４の孔４1，４2にタツピン
グネジ１１1，１１2をねじ込んで、作溝器１に取
付ける。１３はカバーである。 Then, the fertilizer application sensor 3 obtained in this way is fitted into the hole of the working device 1 from the right hand side in FIG.
Tapping screws 11 1 and 11 2 are screwed into the holes 4 1 and 4 2 of the body 4 of the fertilization sensor 3 to attach it to the trencher 1. 13 is a cover.
次に上記施肥センサ３を組込んだ作溝器１を田
植機に取付けて作業を行うときの電極間の肥料詰
りの検出について第３図の回路図に基づいて説明
する。 Next, the detection of fertilizer clogging between the electrodes when the furrower 1 incorporating the fertilization sensor 3 is attached to a rice transplanter will be described with reference to the circuit diagram in FIG. 3.
図においてＶは田植機のバツテリの電源電圧、
R1，R2，R3は抵抗、Ｃはコンパレータ、V1は基
準電圧である。 In the figure, V is the battery power supply voltage of the rice transplanter,
R 1 , R 2 , and R 3 are resistors, C is a comparator, and V 1 is a reference voltage.
(イ) 基準電圧V1に対して肥料が詰らないときは
電極６1と７1との間の抵抗は無限大となりV1＜
V2となるのでコンパレータＣの出力は低レベ
ルとなる。(a) When the fertilizer does not clog with respect to the reference voltage V 1 , the resistance between the electrodes 6 1 and 7 1 becomes infinite and V 1 <
V2 , so the output of comparator C becomes low level.
(ロ) 肥料が詰ると電極６1と７1との間の抵抗は約
数KΩと低下し、従つてV2も低下する。(b) When the fertilizer becomes clogged, the resistance between the electrodes 6 1 and 7 1 decreases to about several kilohms, and therefore V 2 also decreases.
このときV1＜V2となるようにV1の基準電圧を
設定しておけばコンパレータＣの出力は高レベル
となる。そしてこの高レベルに変化したことをブ
ザー又はランプ等によつて作動表示させることに
より、詰りの警報を与えることができる。 At this time, if the reference voltage of V 1 is set so that V 1 <V 2 , the output of comparator C will be at a high level. By activating a buzzer or lamp to indicate that the level has changed to a high level, a clogging warning can be given.
この点、従来のステンレスの電極を用いたとき
には、側の電極が電蝕により表面腐蝕されるた
め、電極間の抵抗値が増大して前記(イ)の状態にな
るので、肥料の詰りを検出することができない恐
れがある。 In this regard, when conventional stainless steel electrodes are used, the surface of the side electrodes is corroded due to electrolytic corrosion, and the resistance value between the electrodes increases, resulting in the state described in (a) above, which allows detection of fertilizer clogging. There is a possibility that you may not be able to do so.
なお上記実施例のものは２本の電極の取付構造
として説明したが、これを１本の方だけをの電
極として利用し、他の１本はボデイアース用の取
付けとして用いることももちろん差支えない。 Although the above embodiment has been described as a two-electrode mounting structure, it is of course possible to use only one of the electrodes as an electrode and use the other one for body grounding.
（考案の効果）
この考案は以上詳述したようにして成り、２つ
の電極は電蝕されないカーボン含有の非金属導電
材料を用いてあるので、電極が肥料の電気分解に
よる腐食のために表面腐食されるようなことがな
くなる。従つて電極間の抵抗値が増大することが
なくなるので、電極間の肥料の詰りを検出できな
いということが全くなくなる。すなわち電極間に
水分を含んだ肥料が詰つたときはその電極間の抵
抗が低下して、コンパレータの出力が高レベルと
なつて、警報装置を作動させきわめて容易かつ正
確に肥料を検出することができるものである。(Effects of the invention) This invention is made as detailed above, and since the two electrodes are made of carbon-containing non-metallic conductive material that is not subject to electrolytic corrosion, the electrodes undergo surface corrosion due to corrosion caused by electrolysis of fertilizer. There will be no more things like that. Therefore, since the resistance value between the electrodes does not increase, there is no possibility that clogging with fertilizer between the electrodes cannot be detected. In other words, when moisture-containing fertilizer gets stuck between the electrodes, the resistance between the electrodes decreases and the output of the comparator goes to a high level, which activates the alarm system and makes it possible to detect fertilizer very easily and accurately. It is possible.
さらにこの考案はリード線と直接ハンダ付けや
蝋付けができない、カーボン含有の非金属導電材
料を用いて電極を形成するために、上述したよう
に金属板ブツシユを電極に圧入してリード線とハ
ンダ付けできる構造としたため構造が簡単で製作
の容易なカーボン含有の非金属導電材料の電極部
材を提供でき、実用価値が甚だ高いものである。 Furthermore, in order to form an electrode using a carbon-containing non-metallic conductive material that cannot be directly soldered or brazed to the lead wire, a metal plate bushing is press-fitted into the electrode as described above, and the lead wire and solder are bonded together. Since it has a structure that can be attached, it is possible to provide an electrode member made of a carbon-containing nonmetallic conductive material that is simple in structure and easy to manufacture, and has extremely high practical value.
第１図はこの考案の一実施例のセンサを取付け
た作溝器の概略図で、第１図ａは一部を断面で示
した側面図、第１図ｂはそのＢ−Ｂ矢視図、第１
図ｃはＣ−Ｃ矢視図である。第２図は電極とリー
ド線との取付構造を示すもので第１図ａのＰ部の
一部分の拡大図、第３図はこの考案の電極間の肥
料詰りの検出についての回路図、第４図は従来の
もので田植機の作溝器を示す。
５……匡体、６1，７1……電極、６2，７2……
コード、８……金属板ブツシユ、９1，９2……リ
ード線。
Fig. 1 is a schematic diagram of a groove cutter equipped with a sensor according to an embodiment of this invention, Fig. 1a is a side view partially shown in cross section, and Fig. 1b is a view taken along the line B-B. , 1st
Figure c is a view taken along the line C-C. Figure 2 shows the mounting structure of the electrode and lead wire, and is an enlarged view of part P of Figure 1a, Figure 3 is a circuit diagram for detecting fertilizer clogging between the electrodes of this invention, and Figure 4 shows the mounting structure of the electrode and lead wire. The figure shows a conventional rice transplanter's groove maker. 5... Enclosure, 6 1 , 7 1 ... Electrode, 6 2 , 7 2 ...
Code, 8...Metal plate bushing, 91 , 92 ...Lead wire.
Claims (1)
電極をそれぞれ金属板ブツシユに圧入し、該金属
板ブツシユをコードのリード線と溶着して電極部
材を形成し、該電極部材を匡体に対しエポキシ樹
脂等の充てん剤を用いて取付けたことを特徴とす
る、施肥センサ。 Two electrodes made of a carbon-containing nonmetallic conductive material are press-fitted into metal plate bushings, the metal plate bushings are welded to the lead wire of the cord to form an electrode member, and the electrode member is attached to the casing using epoxy resin. A fertilization sensor characterized in that it is attached using a filler such as.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9544686U JPH0429404Y2 (en) | 1986-06-24 | 1986-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9544686U JPH0429404Y2 (en) | 1986-06-24 | 1986-06-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS632151U JPS632151U (en) | 1988-01-08 |
| JPH0429404Y2 true JPH0429404Y2 (en) | 1992-07-16 |
Family
ID=30959988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9544686U Expired JPH0429404Y2 (en) | 1986-06-24 | 1986-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429404Y2 (en) |
-
1986
- 1986-06-24 JP JP9544686U patent/JPH0429404Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS632151U (en) | 1988-01-08 |
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