JPH01144854U - - Google Patents
Info
- Publication number
- JPH01144854U JPH01144854U JP4118288U JP4118288U JPH01144854U JP H01144854 U JPH01144854 U JP H01144854U JP 4118288 U JP4118288 U JP 4118288U JP 4118288 U JP4118288 U JP 4118288U JP H01144854 U JPH01144854 U JP H01144854U
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- output
- comparator
- alarm device
- conductivity detector
- 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
- 239000002689 soil Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims 1
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の実施例の斜視図、第２図は電
気回路のブロツク図、第３図は電気回路の詳細図
、第４図は実施例装置による測定データ例を示す
ものである。
１……本体、２……電極、３……土壌、４……
電池、５……パルス発生器、６……電導度検出器
、７……出力比較器、８……警報器。
FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a block diagram of an electric circuit, FIG. 3 is a detailed diagram of the electric circuit, and FIG. 4 shows an example of data measured by the apparatus of the embodiment. 1... Main body, 2... Electrode, 3... Soil, 4...
Battery, 5... Pulse generator, 6... Conductivity detector, 7... Output comparator, 8... Alarm.
Claims (1)
短かいパルスを発生するパルス発生器と、該パル
ス発生器からのパルス発生時のみ電極間の電気伝
導度を計測する電導度検出器と、該電導度検出器
の出力と設定レベル以上又は以下の時出力する比
較器と該比較器の出力により警報を行なう警報器
を具備したことを特徴とする土中水分警報装置。 (2) 電導度検出器と比較器がパルス発生器の構
成要素の一部とを利用したものである請求項１記
載の土中水分警報装置。 (3) 警報器が可聴又は可視警報器である請求項
１又は２記載の土中水分警報装置。 (4) 電導度検出器が出力を段階的又は無段階に
出力し警報を行なうものであることを特徴とする
請求項１，２又は３記載の土中水分警報装置。 (5) 電導度検出器又は比較器の出力をコード化
された光信号又は電磁波として放射するものであ
ることを特徴とする請求項１，２，３及び４記載
の土中水分警報装置。[Claims for Utility Model Registration] (1) A pulse generator that uses a primary battery as a power source and generates pulses shorter than the oscillation interval, and electrical conductivity between electrodes only when pulses are generated from the pulse generator. A conductivity detector that measures conductivity, a comparator that outputs an output when the output of the conductivity detector is above or below a set level, and an alarm that issues an alarm based on the output of the comparator. Moisture alarm device. (2) The soil moisture alarm device according to claim 1, wherein the conductivity detector and the comparator utilize some of the components of a pulse generator. (3) The soil moisture alarm device according to claim 1 or 2, wherein the alarm is an audible or visible alarm. (4) The soil moisture alarm device according to claim 1, 2 or 3, wherein the conductivity detector outputs an output stepwise or steplessly to issue an alarm. (5) The soil moisture alarm device according to claims 1, 2, 3, and 4, characterized in that the output of the conductivity detector or comparator is emitted as a coded optical signal or electromagnetic wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118288U JPH01144854U (en) | 1988-03-30 | 1988-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4118288U JPH01144854U (en) | 1988-03-30 | 1988-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01144854U true JPH01144854U (en) | 1989-10-04 |
Family
ID=31267629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4118288U Pending JPH01144854U (en) | 1988-03-30 | 1988-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01144854U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190974A (en) * | 1993-12-27 | 1995-07-28 | Teruaki Ito | Device for monitoring water content of soil for raising planet |
| JP2014035269A (en) * | 2012-08-09 | 2014-02-24 | Shibaura Institute Of Technology | Quality determination method in curing of cast concrete, curing completion time determination method, and quality determination framework |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216466B2 (en) * | 1979-11-14 | 1987-04-13 | Hitachi Ltd |
-
1988
- 1988-03-30 JP JP4118288U patent/JPH01144854U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216466B2 (en) * | 1979-11-14 | 1987-04-13 | Hitachi Ltd |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190974A (en) * | 1993-12-27 | 1995-07-28 | Teruaki Ito | Device for monitoring water content of soil for raising planet |
| JP2014035269A (en) * | 2012-08-09 | 2014-02-24 | Shibaura Institute Of Technology | Quality determination method in curing of cast concrete, curing completion time determination method, and quality determination framework |
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