JPS6181396U - - Google Patents
Info
- Publication number
- JPS6181396U JPS6181396U JP16587984U JP16587984U JPS6181396U JP S6181396 U JPS6181396 U JP S6181396U JP 16587984 U JP16587984 U JP 16587984U JP 16587984 U JP16587984 U JP 16587984U JP S6181396 U JPS6181396 U JP S6181396U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- resonant
- tire
- oscillation
- output signal
- 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
- 230000010355 oscillation Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Fluid Pressure (AREA)
Description
第１図は、本考案の一実施例のタイヤ側装着部
の縦断面図、第２図は、第１図に示す一実施例の
ボデー側装着部の縦断面図と発振および検知回路
のブロツク図、第３図は、作用を説明するための
電気回路構成図、第４図は、共振時の動作状態を
表す波形図、第５図は、従来技術の電気回路構成
図である。
５……スプリング、６……ピストン、８……ス
トツパ、９……可動接点、１１……固定接点、１
３……コイル、１４……コンデンサ、１５……磁
気コア、２３……コイル、２４……コンデンサ、
２５……磁気コア、２８……発振回路、３１……
ダイオード、３４……増幅器、３５……コンパレ
ータ、３６……表示回路、４０……スイツチ部、
４１……第１のＬＣ共振回路、４２……第２のＬ
Ｃ共振回路、４３……検知回路。
FIG. 1 is a longitudinal sectional view of a tire-side mounting part of an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a body-side mounting part of an embodiment shown in FIG. 1, and a block diagram of an oscillation and detection circuit. FIG. 3 is an electric circuit configuration diagram for explaining the operation, FIG. 4 is a waveform diagram showing the operating state at resonance, and FIG. 5 is an electric circuit configuration diagram of the prior art. 5... Spring, 6... Piston, 8... Stopper, 9... Movable contact, 11... Fixed contact, 1
3... Coil, 14... Capacitor, 15... Magnetic core, 23... Coil, 24... Capacitor,
25... Magnetic core, 28... Oscillation circuit, 31...
Diode, 34...Amplifier, 35...Comparator, 36...Display circuit, 40...Switch section,
41...first LC resonant circuit, 42...second L
C resonance circuit, 43...detection circuit.
Claims (1)
作動するタイヤ側に装着されたスイツチ部と、該
スイツチ部がオンとなつたときにコイルとコンデ
ンサが並列接続されるように構成させてある第１
のＬＣ共振回路と、該第１のＬＣ共振回路と同じ
共振周波数を有するとともに、第１のＬＣ共振回
路と非接触で、電磁誘導結合可能にボデー側に装
着された第２のＬＣ共振回路と、該第２のＬＣ共
振回路に発振信号を供給する発振回路と、タイヤ
空気圧が低下して前記第１および第２のＬＣ共振
回路の共振周波数が一致したときに起こる発振回
路の出力信号のレベル変化を検知する検知回路と
、該検知回路の出力信号によつてタイヤ空気圧の
低下を表示する表示回路と、を備えることを特徴
とするタイヤ空気圧検出器。 A switch part attached to the tire side that is activated when the tire air pressure decreases and reaches a predetermined value, and a second part configured such that a coil and a capacitor are connected in parallel when the switch part is turned on. 1
and a second LC resonant circuit that has the same resonant frequency as the first LC resonant circuit and is mounted on the body side so as to be electromagnetically coupled to the first LC resonant circuit in a non-contact manner. , an oscillation circuit that supplies an oscillation signal to the second LC resonant circuit, and a level of an output signal of the oscillation circuit that occurs when the tire air pressure decreases and the resonant frequencies of the first and second LC resonant circuits match. A tire pressure detector comprising: a detection circuit that detects a change; and a display circuit that displays a decrease in tire pressure based on an output signal of the detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16587984U JPS6181396U (en) | 1984-11-01 | 1984-11-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16587984U JPS6181396U (en) | 1984-11-01 | 1984-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6181396U true JPS6181396U (en) | 1986-05-30 |
Family
ID=30723719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16587984U Pending JPS6181396U (en) | 1984-11-01 | 1984-11-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6181396U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6428529A (en) * | 1987-07-23 | 1989-01-31 | Bridgestone Corp | Tire internal pressure inspecting device |
| JP2002139302A (en) * | 2000-11-01 | 2002-05-17 | Mitsubishi Materials Corp | Contact sensor, contact detection device, and robot equipped with contact detection device |
-
1984
- 1984-11-01 JP JP16587984U patent/JPS6181396U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6428529A (en) * | 1987-07-23 | 1989-01-31 | Bridgestone Corp | Tire internal pressure inspecting device |
| JP2002139302A (en) * | 2000-11-01 | 2002-05-17 | Mitsubishi Materials Corp | Contact sensor, contact detection device, and robot equipped with contact detection device |
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