JPS627020U - - Google Patents
Info
- Publication number
- JPS627020U JPS627020U JP9816985U JP9816985U JPS627020U JP S627020 U JPS627020 U JP S627020U JP 9816985 U JP9816985 U JP 9816985U JP 9816985 U JP9816985 U JP 9816985U JP S627020 U JPS627020 U JP S627020U
- Authority
- JP
- Japan
- Prior art keywords
- convert
- pair
- output
- displacement
- high frequency
- 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
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図ａ，ｂは同実施例におけるセンサの変位量と各
増幅器出力電圧との関係を示した特性図、第３図
ａ，ｂはセンサの変位量と差動回路出力電圧との
関係を示した特性図である。
１…センサ、２，８…水晶振動子、３…発振器
、４，９…フイルタ、１１…弁別器、１４…差動
回路、ｄ…変位量、Ｖ…電圧。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
Figures a and b are characteristic diagrams showing the relationship between the displacement amount of the sensor and the output voltage of each amplifier in the same example, and Figures a and b show the relationship between the displacement amount of the sensor and the differential circuit output voltage. It is a characteristic diagram. DESCRIPTION OF SYMBOLS 1... Sensor, 2, 8... Crystal resonator, 3... Oscillator, 4, 9... Filter, 11... Discriminator, 14... Differential circuit, d... Displacement amount, V... Voltage.
Claims (1)
コンデンサと、 この差動コンデンサと組合わされた一対の水晶
発振器と、 この一対の水晶発振器の各出力のノイズ分を除
去する高周波フイルタと、 この高周波フイルタの各出力を中間周波数信号
に変換する回路と、 この各中間周波数信号をＦＭ復調して電圧信号
に変換する水晶振動子を用いたＦＭ復調器と、 この各電圧信号の差分を取出す差動回路とをそ
なえた静電容量型変位検出器。[Scope of Claim for Utility Model Registration] A differential capacitor whose capacitance changes according to the displacement of a displacement detection target, a pair of crystal oscillators combined with this differential capacitor, and a noise component of each output of this pair of crystal oscillators. A high frequency filter to remove, a circuit to convert each output of this high frequency filter into an intermediate frequency signal, an FM demodulator using a crystal oscillator to FM demodulate each intermediate frequency signal and convert it into a voltage signal, and each of these. A capacitive displacement detector equipped with a differential circuit that extracts the difference between voltage signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9816985U JPS627020U (en) | 1985-06-27 | 1985-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9816985U JPS627020U (en) | 1985-06-27 | 1985-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS627020U true JPS627020U (en) | 1987-01-16 |
Family
ID=30965858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9816985U Pending JPS627020U (en) | 1985-06-27 | 1985-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS627020U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562310A (en) * | 1978-10-20 | 1980-05-10 | Hiromi Ogasawara | Direct-acting type displacement detector |
-
1985
- 1985-06-27 JP JP9816985U patent/JPS627020U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5562310A (en) * | 1978-10-20 | 1980-05-10 | Hiromi Ogasawara | Direct-acting type displacement detector |
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