JPH0283458U - - Google Patents
Info
- Publication number
- JPH0283458U JPH0283458U JP16254088U JP16254088U JPH0283458U JP H0283458 U JPH0283458 U JP H0283458U JP 16254088 U JP16254088 U JP 16254088U JP 16254088 U JP16254088 U JP 16254088U JP H0283458 U JPH0283458 U JP H0283458U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- constant
- under test
- grain
- reference circuit
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す装置の回路図
、第２図はダイオードと基準回路の高低の各定抵
抗との関係を示す説明図、第３図は従来例を示す
回路図である。
１，１′……一対の電極ロール、２……定電圧
電源、３……ダイオード、４，４′……高低の定
抵抗、５，６……リレー、７……増幅回路、Ａ…
…被測定回路、Ｂ……基準回路。
Fig. 1 is a circuit diagram of a device showing an embodiment of the present invention, Fig. 2 is an explanatory diagram showing the relationship between a diode and high and low constant resistances of a reference circuit, and Fig. 3 is a circuit diagram showing a conventional example. be. 1, 1'... Pair of electrode rolls, 2... Constant voltage power supply, 3... Diode, 4, 4'... High and low constant resistance, 5, 6... Relay, 7... Amplifying circuit, A...
...Circuit under test, B...Reference circuit.
Claims (1)
一定電圧を与えて流れる電流信号から試料穀物の
水分を測定する装置において、定電圧電源に、一
対の電極を介して電圧対電流の関係が対数特性を
有する素子を直列接続する被測定回路と、高抵抗
と低抵抗の各定抵抗をそれぞれ介して上記電圧対
電流の関係が対数特性を有する素子を直列接続す
る基準回路を設け、かつ前記被測定回路と基準回
路を交互切換え自在に設けると共に、被測定回路
および基準回路の各定抵抗に切換えたときの上記
電圧対電流の関係が対数特性を有する素子の端子
間電圧から試料穀物の水分を算出するように構成
したことを特徴とする穀物の水分測定装置。 (2) 電圧対電流の関係が対数特性を有する素子
はダイオードであつて、このダイオードを被測定
回路および基準回路の各定抵抗に順方向に直列接
続することを特徴とする請求項(1)記載の穀物の
水分測定装置。[Claims for Utility Model Registration] (1) In a device that measures the moisture content of a sample grain from a current signal flowing by sandwiching a sample grain between a pair of electrodes and applying a constant voltage between them, a pair of constant voltage power sources are connected to the sample grain. A circuit under test in which elements whose voltage-to-current relationship has a logarithmic characteristic are connected in series through electrodes, and an element whose voltage-to-current relationship has a logarithmic characteristic through constant resistors of high resistance and low resistance, respectively. A reference circuit connected in series is provided, and the circuit under test and the reference circuit are provided so as to be able to be switched alternately, and the relationship between voltage and current when switching to each constant resistance of the circuit under test and the reference circuit has logarithmic characteristics. A grain moisture measuring device characterized in that the moisture content of a sample grain is calculated from the voltage between terminals of an element. (2) Claim (1) characterized in that the element whose voltage-to-current relationship has a logarithmic characteristic is a diode, and the diode is connected in series in the forward direction to each constant resistor of the circuit under test and the reference circuit. The grain moisture measuring device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254088U JPH0283458U (en) | 1988-12-15 | 1988-12-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254088U JPH0283458U (en) | 1988-12-15 | 1988-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283458U true JPH0283458U (en) | 1990-06-28 |
Family
ID=31446459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16254088U Pending JPH0283458U (en) | 1988-12-15 | 1988-12-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283458U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696238A (en) * | 1980-12-03 | 1981-08-04 | Shizuoka Seiki Co Ltd | Moisture measuring circuit |
-
1988
- 1988-12-15 JP JP16254088U patent/JPH0283458U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696238A (en) * | 1980-12-03 | 1981-08-04 | Shizuoka Seiki Co Ltd | Moisture measuring circuit |
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