JPS5559336A - Humidity detector - Google Patents
Humidity detectorInfo
- Publication number
- JPS5559336A JPS5559336A JP13277078A JP13277078A JPS5559336A JP S5559336 A JPS5559336 A JP S5559336A JP 13277078 A JP13277078 A JP 13277078A JP 13277078 A JP13277078 A JP 13277078A JP S5559336 A JPS5559336 A JP S5559336A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- waveform
- humidity
- signal
- capacitor
- 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)
Abstract
PURPOSE: To ensure a high-accuracy detection for the humidity change by applying the pulse voltage to the differentiating circuit consisting of the capacitor and the humidity detection element and then converting the humidity change into the time for comparison.
CONSTITUTION: The reference signal delivered from oscillator circuit 1 is divided by divider circuit 2, and the output waveform A is applied to the serial circuit of capacitor C2 and resistance R1 as well as to the serial circuit of capacitor C1 and humidity detection element R2 to obtain integral waveform B and differential waveform B'. These both waveforms are supplied to voltage comparator 3, and waveform C is delivered only when the latter waveform features a higher level than the former waveform. Nonostable multivibrators 4W6 deliver pulse signals DWF via the fall of the input pulse, and signal F clears the counting of counter circuit 7. Signal D is reversed and then supplied to circuit 7 along with the output of circuit 1. And circuit 7 counts the output of circuit 1 after the fall of signal F to complete the counting at the rise of signal D. When the humidity lowers, the resistance of element R2 increases to shorten the counting time of circuit 7. Thus the change of humidity can be detected through the comparison with the 1-cycle preceding count value.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13277078A JPS5841461B2 (en) | 1978-10-27 | 1978-10-27 | humidity detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13277078A JPS5841461B2 (en) | 1978-10-27 | 1978-10-27 | humidity detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5559336A true JPS5559336A (en) | 1980-05-02 |
JPS5841461B2 JPS5841461B2 (en) | 1983-09-12 |
Family
ID=15089141
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13277078A Expired JPS5841461B2 (en) | 1978-10-27 | 1978-10-27 | humidity detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5841461B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1128180A3 (en) * | 2000-02-28 | 2003-10-15 | NGK Spark Plug Company Limited | Control system |
-
1978
- 1978-10-27 JP JP13277078A patent/JPS5841461B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1128180A3 (en) * | 2000-02-28 | 2003-10-15 | NGK Spark Plug Company Limited | Control system |
US6714876B2 (en) | 2000-02-28 | 2004-03-30 | Ngk Spark Plug Co., Ltd. | Control system |
Also Published As
Publication number | Publication date |
---|---|
JPS5841461B2 (en) | 1983-09-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5451454A (en) | Analog digital conversion unit | |
JPS57154983A (en) | Multiplying circuit of horizontal scan frequency | |
JPS5559336A (en) | Humidity detector | |
JPS57111196A (en) | Signal error detector | |
JPS55123239A (en) | Programmable divider | |
JPS536080A (en) | Frequency detection circuit | |
JPS57190273A (en) | Circuit for detecting dropout of signal on magnetic tape | |
JPS5683875A (en) | Tape residual quantity display circuit | |
JPS54134458A (en) | House-service electric instrument | |
JPS5462876A (en) | Speed detector | |
JPS5493951A (en) | Frequency digital variable pulse generator | |
JPS5598371A (en) | Phase determining device | |
JPS5717867A (en) | Bottom-peak width measuring device | |
JPS5545541A (en) | Flush time control method in flush weld method | |
JPS5595876A (en) | Frequency detector | |
JPS5426772A (en) | Operational system | |
JPS54128381A (en) | Noise measuring method | |
JPS55105433A (en) | Maximum value memory circuit device | |
JPS5516209A (en) | Digital counting rate meter | |
JPS5552985A (en) | Counting device | |
JPS552914A (en) | Car-speed detector | |
JPS5644240A (en) | Error rate supervisory circuit | |
JPS5246871A (en) | Device for measurement of automatic phase discriminating allowance | |
JPS55104767A (en) | Digital hysteresis circuit | |
JPS55138923A (en) | Pulse width detecting device |