JPH0295844U

JPH0295844U -

Info

Publication number: JPH0295844U
Application number: JP390289U
Authority: JP
Priority date: 1989-01-19
Filing date: 1989-01-19
Publication date: 1990-07-31

Description

[Brief explanation of drawings]

第１図〜第５図は、本考案に係る土壌水分検出
器の全体構成を示し、このうち第１図は正面図、
第２図は第１図の背面図、第３図は第１図の底面
図、第４図は第１図のＡ―Ａ線矢視断面図、第５
図は、第１図の一部を破断し且つ拡大して示す立
体斜視図、第６図は、第１図〜第５図に示した実
施例の埋設状態を示す概念図、第７図は本実施例
を用いた測定例を示すグラフ、第８図〜第１１図
は、それぞれ異なる変形例を示しその一部をそれ
ぞれ拡大して示す立体斜視図、第１２図〜第１４
図は、従来例を示し、このうち、第１２図は一部
を破断・省略した側面図、第１３図は一部を破断
した立体斜視図、第１４図は、較正の操作を示す
概念図である。１，３７，４１……基板、２……支持部、２ａ
，２ｂ，３８，４２ａ，４２ｂ，４７……支持部
材、３，３９，４６……支持環、４〜７，８〜１
１，４０，４４……電極、１２，４３，４５……
検知開口、１３ａ，１３ｂ……箱部、１５……固
定抵抗、１６，２８，３３……リード部、１６ａ
，１６ｂ……リード線、１７……シール部、１８
，１９……折返部、２０……土壌、２１〜２６…
…検出器、２７……センサ群、３４……リード群
、３５……測定装置。 Figures 1 to 5 show the overall configuration of the soil moisture detector according to the present invention, of which Figure 1 is a front view;
Fig. 2 is a rear view of Fig. 1, Fig. 3 is a bottom view of Fig. 1, Fig. 4 is a sectional view taken along the line A--A of Fig. 1, and Fig. 5
The figure is a three-dimensional perspective view showing a partially broken and enlarged view of FIG. 1, FIG. 6 is a conceptual diagram showing the buried state of the embodiment shown in FIGS. 1 to 5, and FIG. Graphs illustrating measurement examples using the present example, FIGS. 8 to 11, are three-dimensional perspective views showing different modified examples and partially enlarged graphs, and FIGS. 12 to 14.
The figures show a conventional example, of which Fig. 12 is a partially cutaway side view, Fig. 13 is a partially cutaway three-dimensional perspective view, and Fig. 14 is a conceptual diagram showing the calibration operation. It is. 1, 37, 41...Substrate, 2...Support part, 2a
, 2b, 38, 42a, 42b, 47... Support member, 3, 39, 46... Support ring, 4-7, 8-1
1, 40, 44... electrode, 12, 43, 45...
Detection opening, 13a, 13b... Box part, 15... Fixed resistor, 16, 28, 33... Lead part, 16a
, 16b...Lead wire, 17...Seal part, 18
, 19...turning part, 20...soil, 21-26...
...Detector, 27...Sensor group, 34...Lead group, 35...Measuring device.

Claims

[Scope of Claim for Utility Model Registration] (1) In the soil moisture detector that is buried in the soil to be measured and detects the moisture in the soil in order to know the influence of rainfall or watering on the soil, an electrode consisting of at least two elongated conductors disposed at a predetermined interval on the substrate and having a connecting end on one end of each of the electrodes; 1. A soil moisture detector, comprising: a known fixed resistor inserted therein, and configured to fix the electrode on the substrate with a portion of the electrode exposed. (2) The soil moisture detector according to claim 1, wherein the electrode is composed of twisted wires made of stainless steel. (3) The soil moisture detector according to claim 1, wherein the substrate is made of a non-corrosive insulator such as Teflon or polyethylene.