JPH0243680U - - Google Patents
Info
- Publication number
- JPH0243680U JPH0243680U JP12260288U JP12260288U JPH0243680U JP H0243680 U JPH0243680 U JP H0243680U JP 12260288 U JP12260288 U JP 12260288U JP 12260288 U JP12260288 U JP 12260288U JP H0243680 U JPH0243680 U JP H0243680U
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- snowfall
- showing
- electrode terminal
- detection device
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Description
第１図は本考案の第１実施例を示す部分断面斜
視図、第２図は同じ第１実施例を示す部分断面正
面図、第３図は同じ第１実施例を示す電気回路の
ブロツク図、第４図は本考案の第２実施例を示す
部分断面正面図、第５図は同じ第２実施例を示す
電気回路のブロツク図、第６図及び第７図は本考
案の第４実施例を示す電圧の出力波形図である。
１，１２……サーミスタ、２……被覆材、３…
…断熱材、４……電極端子、５……信号線、６…
…受雪面、７……支持具、８……円筒、９……円
筒支持具、１０……支柱、１１……制御箱、１３
……カバー付き円筒、１４……増幅器、１５……
比較器、１６……基準電圧発生器、１７……温度
判定器、１８……降雪検出指示器、１９，２２…
…電圧出力端子、２０……降雪判定出力端子、２
１……差動増幅器、２３……降雪量検出器、２４
……Ａ／Ｄ変換器、２５……降雪量出力端子、２
６……地面、Ａ，Ｂ……電圧出力波形。
Fig. 1 is a partially sectional perspective view showing a first embodiment of the present invention, Fig. 2 is a partially sectional front view showing the same first embodiment, and Fig. 3 is a block diagram of an electric circuit showing the same first embodiment. , FIG. 4 is a partially sectional front view showing a second embodiment of the present invention, FIG. 5 is a block diagram of an electric circuit showing the same second embodiment, and FIGS. 6 and 7 are a fourth embodiment of the present invention. FIG. 3 is a voltage output waveform diagram showing an example. 1, 12...thermistor, 2...covering material, 3...
...Insulating material, 4...Electrode terminal, 5...Signal line, 6...
...Snow receiving surface, 7...Support, 8...Cylinder, 9...Cylindrical support, 10...Strut, 11...Control box, 13
...Cylinder with cover, 14...Amplifier, 15...
Comparator, 16... Reference voltage generator, 17... Temperature determiner, 18... Snowfall detection indicator, 19, 22...
... Voltage output terminal, 20 ... Snowfall judgment output terminal, 2
1... Differential amplifier, 23... Snowfall amount detector, 24
... A/D converter, 25 ... Snowfall amount output terminal, 2
6...Ground, A, B...Voltage output waveform.
Claims (1)
体に２つ以上の電極端子及び前記発熱体に電力を
供給して発熱させる電源とを設け、かつ、前記電
極端子から発熱体の抵抗値を検出する手段を備え
ることを特徴とする降雪検出装置。 A heating element whose electrical resistance changes in response to a change in temperature is provided with two or more electrode terminals and a power source that supplies power to the heating element to generate heat, and the resistance value of the heating element is determined from the electrode terminal. A snowfall detection device comprising a means for detecting snowfall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12260288U JPH0243680U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12260288U JPH0243680U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243680U true JPH0243680U (en) | 1990-03-26 |
Family
ID=31370684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12260288U Pending JPH0243680U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243680U (en) |
-
1988
- 1988-09-19 JP JP12260288U patent/JPH0243680U/ja active Pending
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