JPH0321852A - Light quantity controller of hulling rate sensor in hull grinding machine - Google Patents
Light quantity controller of hulling rate sensor in hull grinding machineInfo
- Publication number
- JPH0321852A JPH0321852A JP15627489A JP15627489A JPH0321852A JP H0321852 A JPH0321852 A JP H0321852A JP 15627489 A JP15627489 A JP 15627489A JP 15627489 A JP15627489 A JP 15627489A JP H0321852 A JPH0321852 A JP H0321852A
- Authority
- JP
- Japan
- Prior art keywords
- light
- grain
- roll
- rate sensor
- amount
- 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.)
- Granted
Links
- 235000013339 cereals Nutrition 0.000 claims abstract description 31
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 4
- 235000009566 rice Nutrition 0.000 claims abstract description 4
- 235000021329 brown rice Nutrition 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 241000209094 Oryza Species 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 2
- 241000190020 Zelkova serrata Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Adjustment And Processing Of Grains (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、籾層機の改良に関し、特に脱浮率の検出のた
めに設ける脱IfI率センサの光量調節の改良に関する
.
(従来の技術)
従来、籾WI機としては、発光素子と受光素子とからな
る脱浮率センサに、脱桿ロールで脱桿処理後の穀物サン
プルを1粒ずつ供給すると、脱伴率センサの出力信号か
ら籾または玄米であるかを判別し、その判別結果から脱
浮率を求める脱■率検出手段と,前記脱桿ロールに供給
する穀物量を調節する穀物供給量all’f手段と、前
記脱伴ロールの問隙調節を行うロール間隙調節手段とを
有するものが知られている.
そして、この種の脱桿率センサでは、発光素子の発光量
が多すぎても少なすぎても脱伴率の検出精度が低下する
ので,発光素子の発光量が最適な値となるように光量調
節を行っている.(発明が解決しようとする課題)
ところが、その光量im中に脱伴ロールを開いたり,ま
たは脱伴ロールへの穀物供給量を増加して脱欅率を変動
させるような場合には、適正な光量調節が行えない可能
性があり,従来,この点が全く考慮されていなかった.
本発明は、これらの点に鑑み、光量調節中に脱桿率の変
動を避けて安定化を図り、もって光量調節の適正化を図
ることを目的とする.
(課題を解決するための手段)
かかる目的を達成するために、本発明は、以下のように
構威した.
すなわち、本発明は、発光素子と受光素子とからなる脱
桿率センサに、脱欅ロールで脱伴処理後の穀物サンプル
を1粒ずつ供給すると、脱浮率センサの出力信号から籾
または玄米であるかを判別し,その判別結果から脱伴率
を求める脱?#率検出手段と、前記脱浮ロールに供給す
る穀物量を調節する穀物供給量調節手段と,前記脱桿ロ
ールの間隙31箇を行うロール間隙調節手段とを有する
籾摺機において、前記発光素子の発光量を順次変化し、
その変化のたびに脱欅率センサに複数個のサンプルを測
定させ、その各測定値から測定分市を作成してその最大
度数を求め、最大度数が設定範囲内になったときに前記
発光素子の光量調節を停止する光量調節手段と、前記光
量調節手段が光量yA節中ば、前記穀物供給量調節手段
、および前記ロール間隙調節手段の各調f1l1動作を
停止する制御手段と、を備えてなるものである.
(作用)
このように構或する本発明では、光量7A節手段が光i
調節中は、制御手段が、穀物供給量調節手段およびロー
ル間隙調節手段の各調節動作を停車する.
従って、脱伴ロールへの穀物供給量、および脱作ロール
の開度がいずれも一定となって脱P!率の変動が避けら
れるので,光量m節が適切となる.(実施例)
第1図は、本発明実施例のブロック図である.図におい
て、lは透過型の脱伴率センナであり、脱浮ロール2で
脱欅処理されて1粒ずつ供給される穀物サンプルに向け
て発光素子(図示せず)からの光を照射し、その透過光
を受光素子(図示せず)で受光し、その受光量に応じた
電気信号を出力する.
脱IfI率センサlを構戊する発光素子としては発光ダ
イオードを使用し、受光素子としてはホトトランジスタ
を使用する.
4はマイクロコンピュータであり,第2図に示すような
制御処理を行なうとともに、各種のデータを記憶するメ
モリを有する.
5はD/A変換回路であり、マイクロコンピュータ4か
ら光量調節信号を受けとると、D/A変換して脱袢率セ
ンサlの発光素子に供給する.6はA/D変換回路であ
り、脱欅率センサlからの出力信号を受け取ると、A/
D変換してマイクロコンピュータ4に供給する.
脱浮ロール2は、脱浮ロール駆動モータ7により駆動す
るとともに、その間隙調節はロール間隙:A節モータ8
の正逆転動作により行う.9は穀物ホッパ(図示せず)
の底部に設けたシャー,夕(開閉弁)であり,穀物ホッ
パ内の穀物はシャッタ9が開くと脱欅ロール2に落下し
て脱欅処理される.
次に、以上のように構或する本発明実施例の制御処理例
について、第2図のフローチャートを参照して説明する
.
まず、脱浮ロール2の間隙初期設定が行われ(ステップ
SL), ロール間隙調節モータ8が翠動してロール
間隙をその設定値にすると、ロール問隙調節モータ8は
駆動を停止する.
次に、穀物ホッパのシャッタ9が所定量開〈と(ステッ
プS2)、穀物ホッパ内の穀物が脱伴ロール2に供給さ
れるので、穀物は脱浮ロールで脱浮処理される.
次いで、以下に説明するような光−1!31fff(ス
テップS3)を開始するが、この光量調節中は、脱欅ロ
ール2の開度およびシャッタ9の開度は初期設定された
ままの状態を維持するので、脱伴率はほぼ一定となる.
この光量調節は,脱桿率センサ1の発光素子の発光量を
コンピュータ4からの光量31節信号により段階的に明
るくしていき、その発光量の変化のたびに脱桿率センサ
1により脱浮ロール2で脱伴処理された複数のサンプル
を測定する.次に、その各測定値から3図で示すような
測定分布A−Cを作成して最大度数を求め、その最大度
数が脱浮率の検出に最適な設定範囲X内になったか否か
を判別する.
そして、このような処理により、第3図の測定分布Cの
ようにその最大度数が設定範囲X内に達すると、光量調
節を終了する.このとき、脱伴率センサlの発光素子の
発光量は最適の状態となる.
光量調節が終了すると、次に脱伴率センサlの測定値か
ら籾と玄米とを判別するための判別電圧を算出し(ステ
ップS4)、脱桿率制御に移行する(ステップS5).
脱伴率制御では 脱伴率センサlの測定値から脱伴率を
検出し、その検出脱伴率があらかじめ脱浮率設定器によ
り設定されている設定値に一致するように、ロール間隙
m節モータ8が正逆転して脱浮ロール2の間隙を開閉す
る.
このように木発明実施例では、光量調節中は、脱欅ロー
ル2およびシャッタ9の各開度を初期設定したままの状
態を維持するようにしたので,脱欅率センサの厠定分布
は第4図(A)のようになり、光量mW1が適切となる
.なお、第4図(A)の脱浮率は約80%である.
ところで、光量調節中に、脱浮ロール2またはシャッタ
9を開いた場合には、脱浮率センサlの測定分布は第4
図(B)のようになり、光量調節はきわめて不適切とな
る.なお,第4図CB)の脱浮率は約50%である.
(発明の効果)
以上のように本発明では,光量調節中は,脱伴率の変動
が生じないようにしたので、光量調節の適正化を図れ、
もって脱桿率の検出精度が向上する.DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an improvement in a rice layer layer machine, and particularly to an improvement in the light intensity adjustment of a IfI removal rate sensor provided for detecting the removal rate. (Prior art) Conventionally, in a paddy WI machine, when a grain sample after dehulling is fed one grain at a time using a dewax roll to a dewaxing rate sensor consisting of a light emitting element and a light receiving element, the dewaxing rate sensor a de-flotation rate detection means for determining whether it is paddy or brown rice from the output signal and determining a defloatation rate from the determination result; and a grain supply amount all'f means for adjusting the amount of grain supplied to the de-floating rolls; It is known to have a roll gap adjustment means for adjusting the gap between the de-entraining rolls. In this type of de-entrainment rate sensor, the accuracy of detecting the de-entrainment rate decreases if the amount of light emitted by the light-emitting element is too high or too low, so the light amount is Adjustments are being made. (Problem to be solved by the invention) However, when changing the dehulling rate by opening the dehulling roll during the light intensity im or increasing the amount of grain supplied to the dehulling roll, it is necessary to change the dehulling rate appropriately. There is a possibility that the light intensity cannot be adjusted, and this point has not been considered at all in the past. In view of these points, it is an object of the present invention to avoid fluctuations in the rod removal rate during light intensity adjustment and stabilize it, thereby optimizing the light intensity adjustment. (Means for Solving the Problem) In order to achieve the above object, the present invention is structured as follows. That is, in the present invention, when a grain sample after dewaxing treatment is fed one by one to a dewaxing rate sensor consisting of a light emitting element and a light receiving element, it is possible to determine whether it is paddy or brown rice from the output signal of the dewaxing rate sensor. Determine if there is a de-entrainment, and calculate the de-entrainment rate from the determination result. In the hulling machine, the rice husking machine has a ratio detection means, a grain supply amount adjusting means for adjusting the amount of grain supplied to the defloating rolls, and a roll gap adjusting means for adjusting the gap between the defloating rolls. The amount of light emitted is changed sequentially,
Each time there is a change, the removal rate sensor measures multiple samples, creates a measurement division from each measurement value, calculates its maximum frequency, and when the maximum frequency falls within the set range, the light emitting element a light amount adjusting means for stopping the light amount adjustment; and a control means for stopping each adjustment f1l1 operation of the grain supply amount adjusting means and the roll gap adjusting means when the light amount adjusting means is in the middle of the light amount yA section. This is what happens. (Function) In the present invention constructed as described above, the light amount 7A regulating means controls the light i.
During the adjustment, the control means stops each adjustment operation of the grain supply amount adjustment means and the roll gap adjustment means. Therefore, the amount of grain supplied to the removal roll and the opening degree of the removal roll are both constant and P removal is achieved! Since fluctuations in the rate can be avoided, a light intensity of m is appropriate. (Embodiment) FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, l is a transmission-type dewaxing rate sensor, which irradiates light from a light emitting element (not shown) toward grain samples that have been dehulled by a defloating roll 2 and supplied one grain at a time. The transmitted light is received by a light-receiving element (not shown), and an electrical signal is output according to the amount of received light. A light emitting diode is used as the light emitting element constituting the IfI removal rate sensor l, and a phototransistor is used as the light receiving element. 4 is a microcomputer, which performs control processing as shown in FIG. 2 and has a memory for storing various data. Reference numeral 5 denotes a D/A conversion circuit, which, upon receiving the light amount adjustment signal from the microcomputer 4, converts it from D/A and supplies it to the light emitting element of the removal rate sensor l. 6 is an A/D conversion circuit, and when it receives the output signal from the withdrawal rate sensor l, it converts the A/D conversion circuit.
It is converted into D and supplied to the microcomputer 4. The defloating roll 2 is driven by a defloating roll drive motor 7, and the gap is adjusted by a roll gap: A section motor 8.
This is done by forward and reverse movement. 9 is a grain hopper (not shown)
There is a shutter (on/off valve) installed at the bottom of the grain hopper, and when the shutter 9 is opened, the grains in the grain hopper fall onto the dehulling rolls 2 and are dehulled. Next, an example of the control processing of the embodiment of the present invention constructed as described above will be explained with reference to the flowchart of FIG. First, initial setting of the gap between the defloating rolls 2 is performed (step SL), and when the roll gap adjustment motor 8 is driven to bring the roll gap to the set value, the roll gap adjustment motor 8 stops driving. Next, the shutter 9 of the grain hopper is opened by a predetermined amount (step S2), and the grain in the grain hopper is supplied to the dewaxing roll 2, so that the grain is defloated by the defloating roll. Next, the light -1!31fff (step S3) as described below is started, but during this light amount adjustment, the opening degree of the keyaki removal roll 2 and the opening degree of the shutter 9 are kept at their initial settings. Therefore, the desorption rate remains almost constant. This light intensity adjustment is performed by gradually increasing the light emission amount of the light emitting element of the rod removal rate sensor 1 based on the light intensity 31-node signal from the computer 4, and each time the light emission amount changes, the rod removal rate sensor 1 Measure multiple samples that have been deentrained in Roll 2. Next, from each measurement value, create a measurement distribution A-C as shown in Figure 3 to find the maximum frequency, and check whether the maximum frequency is within the setting range X that is optimal for detecting the deflotation rate. Determine. Through such processing, when the maximum frequency reaches within the setting range X as shown in the measurement distribution C in FIG. 3, the light amount adjustment is terminated. At this time, the amount of light emitted by the light emitting element of the desorption rate sensor l is in an optimal state. When the light intensity adjustment is completed, a discrimination voltage for distinguishing between paddy and brown rice is calculated from the measured value of the de-entrainment rate sensor 1 (step S4), and the process proceeds to control of the de-entrainment rate (step S5). In de-entrainment rate control, the de-entrainment rate is detected from the measured value of the de-entrainment rate sensor l, and the roll gap m is adjusted so that the detected de-entrainment rate matches the setting value set in advance by the de-buoyancy rate setting device. The motor 8 rotates forward and backward to open and close the gap between the defloating rolls 2. In this way, in the embodiment of the present invention, during the light intensity adjustment, the initial setting of each opening degree of the key removal roll 2 and the shutter 9 is maintained, so that the fixed distribution of the key removal rate sensor is As shown in Figure 4 (A), the light intensity mW1 is appropriate. The defloating rate in Figure 4 (A) is approximately 80%. By the way, if the deflotation roll 2 or the shutter 9 is opened during the light intensity adjustment, the measurement distribution of the defloatation rate sensor l will be the fourth one.
As shown in Figure (B), the light intensity adjustment becomes extremely inappropriate. The defloating rate in Figure 4 (CB) is approximately 50%. (Effects of the Invention) As described above, in the present invention, the de-entrainment rate is prevented from changing during the light amount adjustment, so that the light amount adjustment can be made appropriate.
This improves the detection accuracy of the rod removal rate.
第1図は本発明実施例のブロック図、第2図はその制御
処理例を示すフローチャート、第3図および第4図はそ
れぞれ脱桿率センサの測定分布の−例を示す図である.
l・・・脱憚率センサ、2・・・脱桿ロール、4・・・
マイクロコンピュータ、FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a flowchart showing an example of its control processing, and FIGS. 3 and 4 are diagrams each showing an example of the measurement distribution of the rod removal rate sensor. l... Removal rate sensor, 2... Removal roll, 4...
microcomputer,
Claims (1)
ールで脱■処理後の穀物サンプルを1粒ずつ供給すると
、脱■率センサの出力信号から籾または玄米であるかを
判別し、その判別結果から脱■率を求める脱■率検出手
段と、前記脱■ロールに供給する穀物量を調節する穀物
供給量調節手段と、前記脱■ロールの間隙調節を行うロ
ール間隙調節手段とを有する籾摺機において、前記発光
素子の発光量を順次変化し、その変化のたびに脱■率セ
ンサに複数個のサンプルを測定させ、その各測定値から
測定分布を作成してその最大度数を求め、最大度数が設
定範囲内になったときに前記発光素子の光量調節を停止
する光量調節手段と、 前記光量調節手段が光量調節中は、前記穀物供給量調節
手段、および前記ロール間隙調節手段の各調節動作を停
止する制御手段と、 を備えてなる脱■率センサの光量調節器[Claims] When a grain sample that has been removed by a derolling process is fed one grain at a time to a removal rate sensor consisting of a light emitting element and a light receiving element, it is determined whether it is paddy or brown rice based on the output signal of the removal rate sensor. a removal rate detection means for determining the removal rate from the determination result, a grain supply amount adjusting means for adjusting the amount of grain supplied to the removal roll, and a gap adjustment between the removal rolls. In a rice hulling machine having a roll gap adjustment means, the amount of light emitted from the light emitting element is sequentially changed, and each time the amount of light emitted from the light emitting element changes, a plurality of samples are measured by a dehulling rate sensor, and a measurement distribution is created from each of the measured values. a light amount adjusting means that calculates the maximum power and stops adjusting the light amount of the light emitting element when the maximum power falls within a set range; while the light amount adjusting means is adjusting the light amount, the grain supply amount adjusting means; and a control means for stopping each adjustment operation of the roll gap adjustment means;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15627489A JPH0731125B2 (en) | 1989-06-19 | 1989-06-19 | Light intensity adjuster for the removal rate sensor in the huller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15627489A JPH0731125B2 (en) | 1989-06-19 | 1989-06-19 | Light intensity adjuster for the removal rate sensor in the huller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0321852A true JPH0321852A (en) | 1991-01-30 |
JPH0731125B2 JPH0731125B2 (en) | 1995-04-10 |
Family
ID=15624230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15627489A Expired - Lifetime JPH0731125B2 (en) | 1989-06-19 | 1989-06-19 | Light intensity adjuster for the removal rate sensor in the huller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0731125B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5540453A (en) * | 1993-12-29 | 1996-07-30 | Yukiwa Seiko Kabushiki Kaisha | Chucking apparatus |
-
1989
- 1989-06-19 JP JP15627489A patent/JPH0731125B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5540453A (en) * | 1993-12-29 | 1996-07-30 | Yukiwa Seiko Kabushiki Kaisha | Chucking apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPH0731125B2 (en) | 1995-04-10 |
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