JPH0542620B2 - - Google Patents
Info
- Publication number
- JPH0542620B2 JPH0542620B2 JP59124801A JP12480184A JPH0542620B2 JP H0542620 B2 JPH0542620 B2 JP H0542620B2 JP 59124801 A JP59124801 A JP 59124801A JP 12480184 A JP12480184 A JP 12480184A JP H0542620 B2 JPH0542620 B2 JP H0542620B2
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- voltage
- moisture meter
- motor
- grains
- 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 - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/10—Starch-containing substances, e.g. dough
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、穀粒乾燥機に取付けて乾燥機内の
穀粒の含有水分（含水率）を、その電気抵抗から
自動的に測定する抵抗式水分計に関する。Detailed Description of the Invention (Field of Industrial Application) This invention is a resistance type that is attached to a grain dryer and automatically measures the moisture content (moisture content) of grains in the dryer from its electrical resistance. Regarding moisture meters.
（従来の技術）
このような抵抗式水分計のうちローラ型では、
乾燥機内の穀粒が充満する適当な箇所に１対の電
極ローラをのぞませ、回転しながら穀粒を挾み込
んで粉砕し、回転中のローラ間の抵抗から水分を
測定する。(Prior art) Among these resistance type moisture meters, the roller type
A pair of electrode rollers is placed in a suitable location filled with grains in the dryer, and the grains are pinched and crushed while rotating, and the moisture content is measured from the resistance between the rotating rollers.
（発明が解決しようとする問題点）
ところで乾燥機内の穀粒には小石やわら切れな
どの夾雑物が混入ているため、水分測定中にこれ
らの小石が水分計の電極ローラ間に噛み込まれた
り、あるいはわら切れが電極ローラに絡み付い
て、ローラの回転が止まりロツク状態になること
がある。(Problem to be solved by the invention) However, since the grains in the dryer are contaminated with foreign matter such as pebbles and straw pieces, these pebbles may get caught between the electrode rollers of the moisture meter during moisture measurement. Otherwise, pieces of straw may become entangled with the electrode roller, causing the roller to stop rotating and become locked.
このようにロツク状態になると電極ローラは新
規に穀粒を挾み込まなくなるため、乾燥中の穀粒
の水分変化を測定できなくなる。 In this locked state, the electrode rollers no longer pick up new grains, making it impossible to measure changes in the moisture content of the grains during drying.
しかも多くの場合、乾燥作業は夜間無人状態で
行なわれるため水分計のロツク状態に気付くのが
遅れ、従つて電極ローラを回転する水分計モータ
が過負荷により焼損したり、また水分計により乾
燥機の運転を自動制御している場合にはいつまで
も水分計の測定水分値が見掛け上減らないため、
自動停止が作動しなくなり、過乾燥の危険を引き
起こす。 Moreover, in many cases, drying work is carried out unattended at night, so it is delayed to notice that the moisture meter is locked, resulting in the moisture meter motor that rotates the electrode rollers burning out due to overload, or the moisture meter causing damage to the dryer. If the operation of the moisture meter is automatically controlled, the moisture value measured by the moisture meter will not apparently decrease forever.
The automatic shutoff will no longer work, creating a risk of overdrying.
本発明はこのような事情に鑑みて成されたもの
で電極ローラのロツク状態を適確に検出し、ロツ
ク状態になつたら水分計モータを自動的に止め、
警報を発生して水分計モータの焼損や、過乾燥等
の事故を未然に防ぐことを目的とする。 The present invention was developed in view of these circumstances, and it accurately detects the locked state of the electrode roller, automatically stops the moisture meter motor when the locked state is reached, and automatically stops the moisture meter motor.
The purpose is to generate an alarm to prevent accidents such as burnout of the moisture meter motor or overdrying.
（問題点を解決するための手段）
本発明は、上記の問題点を解決するために電極
ローラがロツク状態になると電極ローラより出力
する水分電圧が変動しなくなる現象を利用して水
分電圧の変動を検出することによりロツク状態を
判定する。(Means for Solving the Problems) In order to solve the above problems, the present invention utilizes the phenomenon that the moisture voltage output from the electrode rollers does not change when the electrode rollers are in a locked state. The lock status is determined by detecting.
即ち本発明は、第１図の機能ブロツク図に示す
とおり、乾燥機内にのぞむ電極ローラ１とそのロ
ーラ間抵抗より水分電圧を取り出す水分電圧出力
手段ａと、水分電圧の時間的変動の有無を検出す
る水分電圧変動検出手段ｂと、水分電圧が時間的
に変動せず、無変動状態のときに電極ローラ１の
ロツク状態を判定するロツク状態判定手段ｃと、
このロツク状態判定手段ｃの出力によつて、水分
計モータＭの回転を止めるモータ制御手段ｄおよ
び異常を警報する異常報知手段ｅとを備えること
を特長とする。 That is, as shown in the functional block diagram of FIG. 1, the present invention comprises an electrode roller 1 placed inside the dryer, a moisture voltage output means a for extracting moisture voltage from the resistance between the rollers, and a moisture voltage output means a for detecting the presence or absence of temporal fluctuations in the moisture voltage. a moisture voltage fluctuation detecting means b for detecting the moisture voltage; and a lock state determining means c for determining the lock state of the electrode roller 1 when the moisture voltage does not change over time and remains unchanged.
The apparatus is characterized by comprising a motor control means d which stops the rotation of the moisture meter motor M based on the output of the lock state determination means c, and an abnormality notification means e which warns of an abnormality.
（作用）
本発明では、電極ロール１間の水分電圧を水分
電圧出力手段ａを経て水分電圧変動検出手段ｂに
入力し、水分電圧が時間的に変動しない無変動状
態の場合には、その検出手段ｂの検出信号に基
き、電極ローラ１がロツク状態であることを判定
して水分計モータＭを直ちに停止すると共に異常
報知手段ｅにより作業者に水分計がロツク状態で
あることを知らせる。(Function) In the present invention, the moisture voltage between the electrode rolls 1 is inputted to the moisture voltage fluctuation detection means b via the moisture voltage output means a, and when the moisture voltage is in a non-fluctuation state where it does not change over time, the moisture voltage is detected. Based on the detection signal from the means b, it is determined that the electrode roller 1 is in the locked state, and the moisture meter motor M is immediately stopped, and the abnormality notification means e notifies the operator that the moisture meter is in the locked state.
（実施例） 次に本発明の実施例を説明する。(Example) Next, embodiments of the present invention will be described.
２は側壁に１対の電極ローラ１，１を軸架した
水分計Ｓの本体ケースで、内部に水分計モータＭ
を装備し、適宜の電動機構を介して電極ローラ
１，１を矢印方向に回転する。 2 is the main body case of the moisture meter S, which has a pair of electrode rollers 1, 1 mounted on the side wall, and a moisture meter motor M inside.
The electrode rollers 1, 1 are rotated in the direction of the arrow through an appropriate electric mechanism.
そしてこの水分計Ｓを公知の循環式穀粒乾燥機
の機壁に取付け、その調質室に電極ローラ１，１
をのぞませる。 This moisture meter S is attached to the wall of a known circulating grain dryer, and the electrode rollers 1 and 1 are placed in the tempering chamber.
I look into it.
３は公知のマイクロコンピユータのCPUで、
その出力ポート４に増巾回路５を介し水分計モー
タＭを接続し、また入力ポート６にはＡ／Ｄ変換
器７を介して水分計Ｓの測定出力端子（図示しな
い）を接続する。ここで測定出力端子は電極ロー
ラ１，１の回転軸にブラシまたはピンにより接触
してローラ１，１間の抵抗より水分電圧を取り出
す端子である。 3 is a CPU of a known microcomputer,
A moisture meter motor M is connected to the output port 4 via an amplification circuit 5, and a measurement output terminal (not shown) of the moisture meter S is connected to the input port 6 via an A/D converter 7. Here, the measurement output terminal is a terminal that comes into contact with the rotating shaft of the electrode rollers 1, 1 through a brush or a pin and extracts the water voltage from the resistance between the rollers 1, 1.
８はCPU３の制御演算部、９はメモリ、１０
はカウンタをそれぞれれ示す。 8 is the control calculation unit of CPU3, 9 is the memory, 10
indicate the respective counters.
しかして水分測定開始時間になると、あらかじ
めメモリ９にセツトしたモータ回転時間Ｔのデー
タのアドレスを指定し、制御演算部８にそのデー
タを読み出してから、カウンタ１０をそのデータ
に従つてセツトしてカウントスタートすると共に
出力ポート４よりモータ回転信号を出力し水分計
モータＭを回転する。 When the moisture measurement start time arrives, the address of the motor rotation time T data set in advance in the memory 9 is specified, the data is read into the control calculation section 8, and the counter 10 is set according to the data. At the same time as the count starts, a motor rotation signal is output from the output port 4 to rotate the moisture meter motor M.
これにより電極ローラ１，１が矢印方向に回転
し、乾燥機内の穀粒を挾み込みこれを粉砕する。
そしてこのように電極ローラ１，１が回転中、ロ
ーラ１，１に直流電圧を印加し、ローラ間の抵抗
よ水分電圧ERをCPU３に出力する。 As a result, the electrode rollers 1, 1 rotate in the direction of the arrow, pinching the grains in the dryer and crushing them.
While the electrode rollers 1 and 1 are rotating in this manner, a DC voltage is applied to the rollers 1 and 1, and the resistance between the rollers and the moisture voltage ER are output to the CPU 3.
水分電圧の波形は電極ローラ１，１の回転を穀
粒がローラ間に挾み込まれるに従い、第４図イに
示すように急激に立上り、その後ローラの回転振
動等の影響で波状に変動する。そこであらかじめ
メモリ９にセツトしたチエツクタイムT1（たとえ
ばT1＝100ns）のデータに従つて水分電圧ERを
周期的に３回読み取り、それぞれの値にER１，
ER２およびER３をメモリ９に書き込み比較す
る。 The waveform of the water voltage rises rapidly as the grains are sandwiched between the electrode rollers 1, 1 as they rotate, as shown in Figure 4A, and then fluctuates in a waveform due to the rotational vibration of the rollers, etc. . Therefore, according to the data of check time T1 (for example, T1 = 100 ns) set in the memory 9 in advance, the moisture voltage ER is periodically read three times, and each value is changed to ER1,
ER2 and ER3 are written to memory 9 and compared.
電極ローラ１，１が正常に回転していれば水分
電圧は前述のとおり変動するので、これらの水分
電圧ER１，ER２、およびER３の値は一致しな
い。従つてこの場合、あかじめセツトした測定時
間Ｔ２における水分電圧ERを読み取り水分値に
換算する。 If the electrode rollers 1, 1 are rotating normally, the moisture voltage will fluctuate as described above, so the values of these moisture voltages ER1, ER2, and ER3 will not match. Therefore, in this case, the moisture voltage ER at the preset measurement time T2 is read and converted into a moisture value.
しかし、電極ローラ１，１間に小石が噛みロツ
ク状態に陥つた場合には水分電圧は時間的に変動
せず、第４図ロの如く一定になるため、水分電圧
ER１，ER２およびER３は全部その値が一致す
る。この場合はCPU３よりモータ非常停止信号
を出力して回転中の水分計モータＭを非常停止
し、これと同時にブザー、ランプ等を作動して作
業者に報知する。 However, if a pebble becomes stuck between the electrode rollers 1 and 1, the moisture voltage does not change over time and remains constant as shown in Figure 4 (b).
ER1, ER2 and ER3 all have the same value. In this case, the CPU 3 outputs a motor emergency stop signal to emergency stop the rotating moisture meter motor M, and at the same time activates a buzzer, lamp, etc. to notify the operator.
（効果）
これを要するに本発明においては、電極ローラ
１，１がロツク状態になると電極ローラ１，１が
出力する水分電圧が変動しなくなるという現象を
利用して水分電圧の変動の有無より電極ローラ
１，１のロツク状態を判定するので、高精度にし
かも素早くロツク状態を判定でき、またこの判定
結果に基き、ロツク状態のときには水分計モータ
Ｍを自動停止すると共に警報を発生するので、モ
ータＭを焼損するおそれもなく、加えて作業者が
乾燥機から離れていても直ちに異常を知ることが
できるという効果を生ずる。(Effects) In short, in the present invention, by utilizing the phenomenon that when the electrode rollers 1, 1 are in a locked state, the moisture voltage output from the electrode rollers 1, 1 does not fluctuate, the electrode roller Since the lock status of 1.1 is determined, the lock status can be determined with high precision and quickly. Based on this determination result, when the moisture meter motor M is in the lock status, the moisture analyzer motor M is automatically stopped and an alarm is generated. There is no risk of burning out the dryer, and in addition, even if the operator is away from the dryer, there is an effect that he or she can immediately notice an abnormality.
第１図は本発明の水分計の機能ブロツク図、第
２図は本発明の水分計の実施例の全体斜視図、第
３図はそのブロツク図、第４図はその水分電圧の
波形を示すグラフでイは正常の場合をロはロツク
状態の場合をそれぞれ示す。第５図は実施例のフ
ローチヤートである。
ａは水分電圧出力手段、ｂは水分電圧変動検出
手段、ｃはロツク状態判定手段、ｄはモータ制御
手段、ｅは異常報知手段、Ｍは水分計モータ、１
は電極ローラ。
Fig. 1 is a functional block diagram of the moisture meter of the present invention, Fig. 2 is an overall perspective view of an embodiment of the moisture meter of the present invention, Fig. 3 is a block diagram thereof, and Fig. 4 shows the waveform of the moisture voltage. In the graph, A indicates a normal case, and B indicates a locked state. FIG. 5 is a flowchart of the embodiment. a is a moisture voltage output means, b is a moisture voltage fluctuation detection means, c is a lock state determination means, d is a motor control means, e is an abnormality notification means, M is a moisture meter motor, 1
is an electrode roller.
Claims (1)
を粉砕する１対の水分測定用電極ロールと、 前記電極ロールのロール間抵抗より水分電圧を
取り出す水分電圧出力手段と、 前記水分電圧出力手段の水分電圧を入力信号と
してその時間的変動の有無を検出する水分電圧変
動検出手段と、 水分電圧が無変動状態のときの前記水分電圧変
動検出手段の検出信号に基きローラのロツク状態
を判定するロツク状態判定手段と、 前記ロツク状態判定手段からの出力信号によつ
て前記水分計モータの回転を制御するモータ制御
手段および異常警報する報知手段と、 を備えることを特長とする穀粒用自動水分計。[Scope of Claims] 1. A pair of moisture measuring electrode rolls that are rotated by a moisture meter motor to crush grains in the dryer, and a moisture voltage output means that extracts moisture voltage from the inter-roll resistance of the electrode rolls. moisture voltage fluctuation detection means for detecting the presence or absence of temporal fluctuations using the moisture voltage of the moisture voltage output means as an input signal; A lock state determining means for determining a lock state; a motor control means for controlling rotation of the moisture meter motor according to an output signal from the lock state determining means; and a notification means for issuing an abnormality alarm. Automatic moisture meter for grains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12480184A JPS613037A (en) | 1984-06-18 | 1984-06-18 | Automatic moisture meter for cereal grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12480184A JPS613037A (en) | 1984-06-18 | 1984-06-18 | Automatic moisture meter for cereal grain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS613037A JPS613037A (en) | 1986-01-09 |
| JPH0542620B2 true JPH0542620B2 (en) | 1993-06-29 |
Family
ID=14894459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12480184A Granted JPS613037A (en) | 1984-06-18 | 1984-06-18 | Automatic moisture meter for cereal grain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS613037A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54115194A (en) * | 1978-02-28 | 1979-09-07 | Shizuoka Seiki Co Ltd | Safety device for instrument for automatically measuring moisture content |
| JPS5587940A (en) * | 1978-12-27 | 1980-07-03 | Shizuoka Seiki Co Ltd | Safety device for automatic water content measuring instrument |
| JPS6135963Y2 (en) * | 1979-09-07 | 1986-10-18 | ||
| JPS5681442A (en) * | 1979-12-06 | 1981-07-03 | Toshiba Corp | Detecting device for dryness factor of drier |
-
1984
- 1984-06-18 JP JP12480184A patent/JPS613037A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS613037A (en) | 1986-01-09 |
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