JP2987752B2 - Milk volume detection device for milking machine - Google Patents
Milk volume detection device for milking machineInfo
- Publication number
- JP2987752B2 JP2987752B2 JP7321008A JP32100895A JP2987752B2 JP 2987752 B2 JP2987752 B2 JP 2987752B2 JP 7321008 A JP7321008 A JP 7321008A JP 32100895 A JP32100895 A JP 32100895A JP 2987752 B2 JP2987752 B2 JP 2987752B2
- Authority
- JP
- Japan
- Prior art keywords
- milk
- electrodes
- detection
- transformer
- detection device
- 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 - Fee Related
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明はミルクチューブに付
設した一対の電極間の抵抗値に基づいて乳量を検出する
搾乳機の乳量検出装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting the amount of milk in a milking machine, based on the resistance between a pair of electrodes attached to a milk tube.
【0002】[0002]
【従来の技術】従来、搾乳機の乳量検出装置は、実公平
6−46291号公報等で開示されるように、ミルクパ
イプのミルクタップに接続するディストリビュータに備
えるミルクチューブに一対の電極を付設するとともに、
乳が流れることにより変化する電極間の抵抗値を検出処
理回路により測定し、この測定した抵抗値を乳量(明細
書中、乳量とは乳の流量である)に変換していた。2. Description of the Related Art Conventionally, as disclosed in Japanese Utility Model Publication No. 6-46291, a milk amount detecting device of a milking machine has a pair of electrodes attached to a milk tube provided in a distributor connected to a milk tap of a milk pipe. Along with
The resistance value between the electrodes, which changes due to the flow of milk, was measured by a detection processing circuit, and the measured resistance value was converted to milk mass (in the description, milk mass is the flow rate of milk).
【0003】ところで、電極の形態としては各種提案さ
れているが、ミルクチューブの一部となるリング形式の
電極も実開平7−28342号公報で知られている。図
4は同公報に開示される電極に対して検出処理回路51
を接続した乳量検出装置50を示す。図4において、6
1はミルクパイプであり、このミルクパイプ61にはミ
ルクチューブ62が接続される。なお、ミルクパイプ6
1とミルクチューブ62の実際の接続に際しては、ミル
クパイプ61に設けたミルクタップに、ミルクチューブ
62を備えるディストリビュータを装着するが、図4で
はミルクタップ及びディストリビュータは省略した。[0003] By the way, various types of electrodes have been proposed, and a ring-type electrode which is a part of a milk tube is also known from Japanese Utility Model Application Laid-Open No. 7-28342. FIG. 4 shows a detection processing circuit 51 for the electrodes disclosed in the publication.
Shows the milk amount detection device 50 connected to the device. In FIG.
A milk pipe 1 is connected to a milk tube 62. In addition, milk pipe 6
When actually connecting the milk tube 1 to the milk tube 62, a distributor provided with the milk tube 62 is attached to the milk tap provided on the milk pipe 61, but the milk tap and the distributor are omitted in FIG.
【0004】一方、52,53はリング形式の電極であ
り、電極52はミルクパイプ61の近傍におけるミルク
チューブ62の一部として組付けられるとともに、電極
53はミルクチューブ62の一部となる導電性パイプが
そのまま用いられる。また、検出処理回路51はCPU
等を含む処理部54を備えるとともに、抵抗Ra,R
b,Rc,Rd,Re,Rf及びスイッチングトランジ
スタQx,Qyを有する検出部55を備える。なお、5
6は検出処理回路51に給電する電源回路であり、一次
側電力はパルセーションコントローラ57からパルセー
タに供給する制御信号が利用される。On the other hand, 52 and 53 are ring-type electrodes. The electrode 52 is assembled as a part of a milk tube 62 near a milk pipe 61, and the electrode 53 is a conductive material which becomes a part of the milk tube 62. The pipe is used as is. The detection processing circuit 51 is a CPU
And the like, and the resistances Ra, R
A detection unit 55 having b, Rc, Rd, Re, Rf and switching transistors Qx, Qy is provided. In addition, 5
Reference numeral 6 denotes a power supply circuit for supplying power to the detection processing circuit 51, and a control signal supplied from the pulsation controller 57 to the pulsator is used as primary power.
【0005】よって、図5に示すように、処理部54に
よりスイッチングトランジスタQyをオンにすれば、直
流電源ラインから、抵抗Rc,電極52と53間,スイ
ッチングトランジスタQyの経路で電流Ioが流れ、電
極52と53間の乳によって生ずる抵抗値Roは、処理
部54に付与される検出電圧Vyと電流Ioにより測定
されるとともに、測定された抵抗値Roは、処理部54
によって乳量に変換される。また、電極52と53の電
触を防止するため、図6(a),(b)に示すように、
スイッチングトランジスタQxとQyを交互にオンさせ
ることにより電流を流す方向を反転させる。なお、図6
(c),(d)には、スイッチングトランジスタQx,
Qyがオンした際に測定される検出電圧Vx,Vyをそ
れぞれ示す。Accordingly, as shown in FIG. 5, when the switching transistor Qy is turned on by the processing unit 54, a current Io flows from the DC power supply line through the resistor Rc, the electrodes 52 and 53, and the path of the switching transistor Qy. The resistance Ro generated by milk between the electrodes 52 and 53 is measured by the detection voltage Vy and the current Io applied to the processing unit 54, and the measured resistance Ro is measured by the processing unit 54
Is converted to milk yield. In order to prevent the electrodes 52 and 53 from touching each other, as shown in FIGS.
By turning on the switching transistors Qx and Qy alternately, the direction of current flow is reversed. FIG.
(C) and (d) show switching transistors Qx,
The detection voltages Vx and Vy measured when Qy is turned on are shown.
【0006】[0006]
【発明が解決しようとする課題】ところで、通常、ミル
クパイプ61は金属製パイプを使用するとともに、安全
性等を考慮して接地されることから、ミルクパイプ61
は接地電位となる。The milk pipe 61 is usually made of a metal pipe and grounded in consideration of safety and the like.
Becomes the ground potential.
【0007】このため、従来の乳量検出装置50では、
ミルクチューブ62に乳が流れた際に、図5に示すよう
に、電極52と接地間に抵抗rxが、また、電極53と
接地間に抵抗ryがそれぞれ発生し、各抵抗rx,ry
には、電流Ioの一部である漏洩電流ix,iyが流れ
る。よって、各抵抗rx,ryの存在は抵抗値Roの測
定誤差を大きくし、特に、抵抗rx,ryの大きさは、
電極52,53とミルクパイプ61間の距離に依存する
ため、電極52,53がミルクパイプ61に接近して組
付けられた場合には無視できなくなり、乳量の正確な検
出を行うことができない問題があった。For this reason, in the conventional milk amount detecting device 50,
When milk flows into the milk tube 62, as shown in FIG. 5, a resistance rx is generated between the electrode 52 and the ground, and a resistance ry is generated between the electrode 53 and the ground.
, Leakage currents ix and iy, which are part of the current Io, flow. Therefore, the presence of each of the resistors rx and ry increases the measurement error of the resistance Ro. In particular, the magnitude of the resistors rx and ry is
Since it depends on the distance between the electrodes 52, 53 and the milk pipe 61, when the electrodes 52, 53 are assembled close to the milk pipe 61, they cannot be ignored and accurate detection of milk amount cannot be performed. There was a problem.
【0008】本発明はこのような従来の技術に存在する
課題を解決したものであり、測定誤差を排することによ
り、乳量の正確な検出を行うことができる搾乳機の乳量
検出装置の提供を目的とする。The present invention has been made to solve the problems existing in the prior art and eliminates a measurement error to provide a milking amount detecting device of a milking machine capable of accurately detecting the amount of milk. For the purpose of providing.
【0009】[0009]
【課題を解決するための手段及び実施の形態】本発明
は、ミルクパイプ2に接続するミルクチューブ3に付設
した一対の電極4,5と、この電極4と5間の抵抗値R
oに基づいて乳量を検出する検出処理回路6を備える搾
乳機の乳量検出装置1を構成するに際して、一対の電極
4,5と検出処理回路6間にトランス7を介在させ、こ
のトランス7の一次巻線7fの両端を検出処理回路6に
おける電極接続部にそれぞれ接続するとともに、トラン
ス7の二次巻線7sの両端を一対の電極4,5にそれぞ
れ接続したことを特徴とする。According to the present invention, a pair of electrodes 4 and 5 attached to a milk tube 3 connected to a milk pipe 2 and a resistance R between the electrodes 4 and 5 are provided.
When configuring the milk amount detection device 1 of the milking machine including the detection processing circuit 6 for detecting the amount of milk based on o, a transformer 7 is interposed between the pair of electrodes 4 and 5 and the detection processing circuit 6. The two ends of the primary winding 7f are connected to electrode connection portions in the detection processing circuit 6, respectively, and both ends of the secondary winding 7s of the transformer 7 are connected to a pair of electrodes 4 and 5, respectively.
【0010】この場合、好適な実施の形態により、電極
4,5はミルクチューブ3の一部となるリング形式の電
極を用いるとともに、検出処理回路6は、トランス7の
一次巻線7fから得る検出電圧Vm,Vnと予め設定し
た基準電圧Vsを比較し、検出電圧Vm,Vnが基準電
圧Vsを越えた継続時間Twを乳量に変換する処理機能
を備えることを特徴とする。In this case, according to a preferred embodiment, the electrodes 4 and 5 use ring-shaped electrodes which are a part of the milk tube 3, and the detection processing circuit 6 performs the detection obtained from the primary winding 7f of the transformer 7. It has a processing function of comparing the voltages Vm and Vn with a preset reference voltage Vs, and converting the duration Tw in which the detection voltages Vm and Vn exceed the reference voltage Vs into milk amount.
【0011】これにより、トランス7の二次巻線7sの
両端に抵抗値Roが接続状態となるため、トランス7の
二次側には二次巻線7sと抵抗値Roによるループ回路
が構成される。この結果、トランス7の一次巻線7fに
電流Ifを流した際に、二次巻線7sに流れる電流Is
は当該ループ回路を循環し、電極4,5と接地間に生ず
る抵抗rx,ryには電流Isが流れない。よって、当
該抵抗rx,ryは誤差要因とならずに無視される。As a result, since the resistance Ro is connected to both ends of the secondary winding 7s of the transformer 7, a loop circuit is formed on the secondary side of the transformer 7 by the secondary winding 7s and the resistance Ro. You. As a result, when the current If flows through the primary winding 7f of the transformer 7, the current Is flowing through the secondary winding 7s
Circulates through the loop circuit, and no current Is flows through the resistances rx and ry generated between the electrodes 4 and 5 and the ground. Therefore, the resistances rx and ry are ignored without causing an error.
【0012】[0012]
【実施例】次に、本発明に係る最適な実施例を挙げ、図
面に基づき詳細に説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention.
【0013】まず、本実施例に係る乳量検出装置1の構
成について、図1を参照して説明する。First, the configuration of the milk amount detection device 1 according to the present embodiment will be described with reference to FIG.
【0014】図1中、2はミルクパイプであり、このミ
ルクパイプ2にはミルクチューブ3が接続される。な
お、ミルクパイプ2とミルクチューブ3の実際の接続に
際しては、ミルクパイプ2に設けたミルクタップに、ミ
ルクチューブ3を備えるディストリビュータを装着する
が、図1ではミルクタップ及びディストリビュータは省
略した。一方、4,5はリング形式の一対の電極であ
る。電極4は、ミルクパイプ2の近傍におけるミルクチ
ューブ3の一部として組付けられるとともに、電極5は
ミルクチューブ3の一部となる導電性パイプ5pがその
まま用いられる。In FIG. 1, reference numeral 2 denotes a milk pipe, to which a milk tube 3 is connected. When the milk pipe 2 and the milk tube 3 are actually connected, a distributor provided with the milk tube 3 is attached to the milk tap provided on the milk pipe 2, but the milk tap and the distributor are omitted in FIG. On the other hand, 4 and 5 are a pair of electrodes of a ring type. The electrode 4 is assembled as a part of the milk tube 3 near the milk pipe 2, and the electrode 5 is a conductive pipe 5 p that is a part of the milk tube 3.
【0015】また、検出処理回路6はCPU等を含む処
理部11を備えるとともに、検出部12を備える。検出
部12はスイッチングトランジスタQm,Qnを有し、
スイッチングトランジスタQmのベースは抵抗R1及び
R2からなるバイアス回路を介して処理部11に接続す
るとともに、スイッチングトランジスタQnのベースは
バイアス抵抗R3及びR4からなるバイアス回路を介し
て処理部11に接続する。一方、各スイッチングトラン
ジスタQm,Qnのエミッタは接地するとともに、電極
接続部となるスイッチングトランジスタQm,Qnの各
コレクタはそれぞれトランス7の一次巻線7fの両端に
接続する。さらにまた、トランス7の一次巻線7fの両
端はそれぞれ抵抗R5,R6を介して直流電源ライン1
3に接続するとともに、トランス7の一次巻線7fの両
端は処理部11に接続する。他方、トランス7の二次巻
線7sの両端はそれぞれ電極4,5に接続する。The detection processing circuit 6 includes a processing unit 11 including a CPU and the like, and a detection unit 12. The detection unit 12 has switching transistors Qm and Qn,
The base of the switching transistor Qm is connected to the processing unit 11 via a bias circuit including resistors R1 and R2, and the base of the switching transistor Qn is connected to the processing unit 11 via a bias circuit including bias resistors R3 and R4. On the other hand, the emitters of the switching transistors Qm and Qn are grounded, and the collectors of the switching transistors Qm and Qn, which are electrode connections, are connected to both ends of the primary winding 7f of the transformer 7, respectively. Furthermore, both ends of the primary winding 7f of the transformer 7 are connected to the DC power supply line 1 via resistors R5 and R6, respectively.
3, and both ends of the primary winding 7 f of the transformer 7 are connected to the processing unit 11. On the other hand, both ends of the secondary winding 7s of the transformer 7 are connected to the electrodes 4 and 5, respectively.
【0016】なお、14は検出処理回路6に給電する電
源回路であり、一次側電力はパルセーションコントロー
ラ15からパルセータに供給する制御信号が利用され
る。A power supply circuit 14 supplies power to the detection processing circuit 6, and a control signal supplied from the pulsation controller 15 to the pulsator is used as primary power.
【0017】次に、本実施例に係る乳量検出装置1の動
作について、図2及び図3を参照して説明する。Next, the operation of the milk amount detecting device 1 according to the present embodiment will be described with reference to FIGS.
【0018】まず、図2に示すように、処理部11によ
って、スイッチングトランジスタQnをオンにすれば、
直流電源ライン13から抵抗R5,一次巻線7f,スイ
ッチングトランジスタQnの経路で電流Ifが流れる。
なお、rfは一次巻線7fの等価抵抗である。この場
合、処理部11に入力する一次巻線7fから得る検出電
圧Vnは、図3(c)のような三角波状となる。一方、
処理部11では予め設定された基準電圧Vsと検出電圧
Vnを比較し、検出電圧Vnが基準電圧Vsを越えた継
続時間Twを計測するとともに、計測した継続時間Tw
を乳量に変換する演算処理を行う。First, as shown in FIG. 2, when the switching transistor Qn is turned on by the processing unit 11,
A current If flows from the DC power supply line 13 through a path of the resistor R5, the primary winding 7f, and the switching transistor Qn.
Note that rf is an equivalent resistance of the primary winding 7f. In this case, the detection voltage Vn obtained from the primary winding 7f input to the processing unit 11 has a triangular waveform as shown in FIG. on the other hand,
The processing unit 11 compares the preset reference voltage Vs with the detection voltage Vn, measures the duration Tw in which the detection voltage Vn exceeds the reference voltage Vs, and measures the measured duration Tw.
Is converted to a milk amount.
【0019】他方、トランス7の二次巻線7sの両端に
は、電極4,5間の乳によって生ずる抵抗値Roが接続
状態となるため、トランス7の二次側には、二次巻線7
sと抵抗値Roによるループ回路Csが構成され、二次
巻線7sに流れる電流Isは当該ループ回路Csを循環
し、電極4,5と接地間に生ずる抵抗rx,ryには流
れない。なお、rsは二次巻線7sの等価抵抗である。
よって、電極4,5と接地間に生ずる抵抗rx,ryは
誤差要因とならずに無視される。また、検出電圧Vnの
減衰特性は、抵抗値Roの大きさ(ループ回路Csにお
ける時定数の大きさ)に応じて変化するため、上記継続
時間Twは抵抗値Roの関数として求められる。On the other hand, the resistance Ro generated by milk between the electrodes 4 and 5 is connected to both ends of the secondary winding 7s of the transformer 7, so that the secondary winding of the transformer 7 is connected to the secondary winding 7s. 7
A loop circuit Cs is formed by s and the resistance value Ro. The current Is flowing through the secondary winding 7s circulates through the loop circuit Cs and does not flow through the resistances rx and ry generated between the electrodes 4 and 5 and the ground. Note that rs is the equivalent resistance of the secondary winding 7s.
Therefore, the resistances rx and ry generated between the electrodes 4 and 5 and the ground are ignored without causing an error. Further, since the attenuation characteristic of the detection voltage Vn changes according to the magnitude of the resistance value Ro (the magnitude of the time constant in the loop circuit Cs), the duration Tw is obtained as a function of the resistance value Ro.
【0020】なお、電極4と5の電触を防止するため、
図3(a)及び(b)に示すように、スイッチングトラ
ンジスタQmとQnを交互にオンさせることにより電流
を流す方向を反転させる。また、図3(d)は、スイッ
チングトランジスタQmがオンした際に測定される一次
巻線7fから得る検出電圧Vmである。In order to prevent the electrodes 4 and 5 from touching each other,
As shown in FIGS. 3A and 3B, the direction in which the current flows is reversed by alternately turning on the switching transistors Qm and Qn. FIG. 3D shows the detected voltage Vm obtained from the primary winding 7f when the switching transistor Qm is turned on.
【0021】以上、実施例について詳細に説明したが、
本発明はこのような実施例に限定されるものではない。
例えば、電極の形状や位置等は任意に実施できる。ま
た、実施例は計測時間Twを計測し、この計測時間Tw
を乳量に変換したが、電流Ifを流す開始時点から一定
時間経過後の検出電圧Vm,Vnの大きさ(瞬時値)を
計測し、この検出電圧を乳量に変換してもよいし、或い
は検出電圧Vm,Vnの積分値又は平均値を乳量に変換
してもよい。その他、細部の回路構成等において、本発
明の要旨を逸脱しない範囲で任意に変更できる。The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, the shape and position of the electrode can be arbitrarily set. In the embodiment, the measurement time Tw is measured, and the measurement time Tw is measured.
Was converted to the amount of milk, but the magnitudes (instantaneous values) of the detection voltages Vm and Vn after a certain period of time have elapsed since the start of flowing the current If may be measured, and the detected voltage may be converted to the amount of milk. Alternatively, the integrated value or the average value of the detection voltages Vm and Vn may be converted into the milk amount. In addition, the details of the circuit configuration and the like can be arbitrarily changed without departing from the gist of the present invention.
【0022】[0022]
【発明の効果】このように、本発明は、ミルクパイプに
接続するミルクチューブに付設した一対の電極と、この
電極間の抵抗値に基づいて乳量を検出する検出処理回路
を備える搾乳機の乳量検出装置において、一対の電極と
検出処理回路間にトランスを介在させ、このトランスの
一次巻線の両端を検出処理回路における電極接続部にそ
れぞれ接続するとともに、トランスの二次巻線の両端を
一対の電極にそれぞれ接続したため、電極と接地間に生
ずる抵抗による誤差要因を排することができ、以て、乳
量の正確な検出を行うことができるという顕著な効果を
奏する。As described above, the present invention provides a milking machine including a pair of electrodes attached to a milk tube connected to a milk pipe and a detection processing circuit for detecting the amount of milk based on a resistance value between the electrodes. In a milk amount detection device, a transformer is interposed between a pair of electrodes and a detection processing circuit, and both ends of a primary winding of the transformer are respectively connected to electrode connection portions in the detection processing circuit, and both ends of a secondary winding of the transformer are connected. Are connected to the pair of electrodes, respectively, so that an error factor due to a resistance generated between the electrode and the ground can be eliminated, thereby providing a remarkable effect that accurate detection of milk amount can be performed.
【図1】本発明に係る乳量検出装置の電気回路図、FIG. 1 is an electric circuit diagram of a milk amount detection device according to the present invention,
【図2】同乳量検出装置における電気回路の作用説明
図、FIG. 2 is an explanatory diagram of an operation of an electric circuit in the milk amount detection device,
【図3】同乳量検出装置の電気回路における各部の信号
のタイムチャート、FIG. 3 is a time chart of signals of various parts in the electric circuit of the milk amount detection device;
【図4】従来の技術に係る乳量検出装置の電気回路図、FIG. 4 is an electric circuit diagram of a milk amount detection device according to the related art;
【図5】同乳量検出装置における電気回路の作用説明
図、FIG. 5 is an explanatory diagram of an operation of an electric circuit in the milk amount detection device,
【図6】同乳量検出装置の電気回路における各部の信号
のタイムチャート、FIG. 6 is a time chart of signals of various parts in the electric circuit of the milk amount detection device;
1 乳量検出装置 2 ミルクパイプ 3 ミルクチューブ 4 電極 5 電極 6 検出処理回路 7 トランス 7f 一次巻線 7s 二次巻線 Ro 抵抗値 Vm 検出電圧 Vn 検出電圧 Vs 基準電圧 Tw 継続時間 Reference Signs List 1 milk amount detection device 2 milk pipe 3 milk tube 4 electrode 5 electrode 6 detection processing circuit 7 transformer 7f primary winding 7s secondary winding Ro resistance value Vm detection voltage Vn detection voltage Vs reference voltage Tw duration
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平8−271306(JP,A) 特開 昭61−153525(JP,A) 実開 平7−28342(JP,U) 特公 平2−16851(JP,B2) 実公 平6−46291(JP,Y2) 実公 平5−45170(JP,Y2) (58)調査した分野(Int.Cl.6,DB名) A01J 7/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-271306 (JP, A) JP-A-61-153525 (JP, A) JP-A-7-28342 (JP, U) 16851 (JP, B2) Jiko 6-46291 (JP, Y2) Jiko 5-45170 (JP, Y2) (58) Field surveyed (Int. Cl. 6 , DB name) A01J 7/00
Claims (3)
に付設した一対の電極と、この電極間の抵抗値に基づい
て乳量を検出する検出処理回路を備える搾乳機の乳量検
出装置において、前記一対の電極と前記検出処理回路間
にトランスを介在させ、このトランスの一次巻線の両端
を前記検出処理回路における電極接続部にそれぞれ接続
するとともに、前記トランスの二次巻線の両端を前記一
対の電極にそれぞれ接続したことを特徴とする搾乳機の
乳量検出装置。1. A milking amount detecting device for a milking machine, comprising: a pair of electrodes attached to a milk tube connected to a milk pipe; and a detection processing circuit for detecting milk amount based on a resistance value between the electrodes. A transformer is interposed between the electrodes and the detection processing circuit, and both ends of a primary winding of the transformer are respectively connected to electrode connection portions in the detection processing circuit, and both ends of a secondary winding of the transformer are connected to the pair of electrodes. A milk amount detection device for a milking machine, which is connected to each of the electrodes.
なるリング形式の電極であることを特徴とする請求項1
記載の搾乳機の乳量検出装置。2. The electrode according to claim 1, wherein said electrode is a ring-type electrode which is a part of said milk tube.
A milk amount detection device for a milking machine according to the above.
次巻線から得る検出電圧と予め設定した基準電圧を比較
し、前記検出電圧が前記基準電圧を越えた継続時間を乳
量に変換する処理機能を備えることを特徴とする請求項
1記載の搾乳機の乳量検出装置。3. A process for comparing a detection voltage obtained from a primary winding of the transformer with a preset reference voltage, and converting a duration in which the detection voltage exceeds the reference voltage into a milk amount. The milk amount detection device for a milking machine according to claim 1, further comprising a function.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7321008A JP2987752B2 (en) | 1995-11-15 | 1995-11-15 | Milk volume detection device for milking machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7321008A JP2987752B2 (en) | 1995-11-15 | 1995-11-15 | Milk volume detection device for milking machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09135641A JPH09135641A (en) | 1997-05-27 |
JP2987752B2 true JP2987752B2 (en) | 1999-12-06 |
Family
ID=18127767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7321008A Expired - Fee Related JP2987752B2 (en) | 1995-11-15 | 1995-11-15 | Milk volume detection device for milking machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2987752B2 (en) |
-
1995
- 1995-11-15 JP JP7321008A patent/JP2987752B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH09135641A (en) | 1997-05-27 |
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