JPS5565147A - Humidity detector - Google Patents
Humidity detectorInfo
- Publication number
- JPS5565147A JPS5565147A JP13903078A JP13903078A JPS5565147A JP S5565147 A JPS5565147 A JP S5565147A JP 13903078 A JP13903078 A JP 13903078A JP 13903078 A JP13903078 A JP 13903078A JP S5565147 A JPS5565147 A JP S5565147A
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- detection section
- rectifier
- temperature
- resistor
- 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.)
- Granted
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To enable to detect the humidity change with a simple constitution, by using the humidity detection element changed according to the change of humidity for the electric resistance between electrodes.
CONSTITUTION: The oscillation circuit 1 supplies the AC voltage having constant frequency and amplitude to the temperature detection section consisting of the resistor R2 and thermister RT and to the humidity detection section consisting of the resistor R1 and humidity detection element RH. The rectifier D1, capacitor C1, rectifier D2, and capacitor C2 pick up the envelope waveform of the voltage waveform at the junction between the humidity detection section and the temperature detection section. The envelope waveform picked up includes the information of humidity and temperature and the information only for the humidity can be picked up by comparing the both.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53139030A JPS6051059B2 (en) | 1978-11-10 | 1978-11-10 | humidity detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53139030A JPS6051059B2 (en) | 1978-11-10 | 1978-11-10 | humidity detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5565147A true JPS5565147A (en) | 1980-05-16 |
JPS6051059B2 JPS6051059B2 (en) | 1985-11-12 |
Family
ID=15235818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53139030A Expired JPS6051059B2 (en) | 1978-11-10 | 1978-11-10 | humidity detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6051059B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0897570A2 (en) * | 1996-05-07 | 1999-02-24 | Knox Security Engineering Corporation | Moisture detecting devices such as for diapers and diapers having such devices |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5335596A (en) * | 1976-09-14 | 1978-04-03 | Kaneko Agricult Machinery | Automatic temperature calibration system in electric resistance type moisture content meter |
-
1978
- 1978-11-10 JP JP53139030A patent/JPS6051059B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5335596A (en) * | 1976-09-14 | 1978-04-03 | Kaneko Agricult Machinery | Automatic temperature calibration system in electric resistance type moisture content meter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0897570A2 (en) * | 1996-05-07 | 1999-02-24 | Knox Security Engineering Corporation | Moisture detecting devices such as for diapers and diapers having such devices |
EP0897570A4 (en) * | 1996-05-07 | 2000-12-27 | Knox Security Engineering Corp | Moisture detecting devices such as for diapers and diapers having such devices |
Also Published As
Publication number | Publication date |
---|---|
JPS6051059B2 (en) | 1985-11-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5551345A (en) | Humidity detector | |
JPS5565147A (en) | Humidity detector | |
JPS551507A (en) | Humidity detector | |
JPS5478028A (en) | Position detector | |
JPS5596465A (en) | Frequency detecting circuit | |
JPS5576960A (en) | Method of measuring low grounding resistance | |
JPS54125537A (en) | Lighting-fire detection device | |
JPS55166032A (en) | Gas detecting element and gas detecting method | |
JPS52147748A (en) | Phaseless voltage detector | |
JPS5566746A (en) | Humidity detecting sensor | |
JPS57165748A (en) | Detection circuit of quantity of toner | |
JPS5559335A (en) | Humidity detector | |
JPS54100797A (en) | Liquid detector | |
JPS5658666A (en) | Avometer having impedance range | |
JPS5547458A (en) | Frequency discriminator circuit | |
JPS54118899A (en) | Humidity detector | |
JPS5433768A (en) | Tester for insulated resistor | |
JPS55128163A (en) | Method for measurement of resistance of conductive cover | |
JPS5457144A (en) | Overcurrent detector | |
JPS54130966A (en) | Oscillatory frequency detecting circuit | |
JPS5528146A (en) | Graphic input unit | |
JPS55146058A (en) | Measuring unit of capacitance-resistance at high frequency | |
JPS5517446A (en) | Humidity detector | |
JPS53133471A (en) | Circuit constant setting method of impedance change detecting circuit | |
JPS5376082A (en) | Insulation resistance measuring apparatus |