JPS623003U - - Google Patents
Info
- Publication number
- JPS623003U JPS623003U JP9462385U JP9462385U JPS623003U JP S623003 U JPS623003 U JP S623003U JP 9462385 U JP9462385 U JP 9462385U JP 9462385 U JP9462385 U JP 9462385U JP S623003 U JPS623003 U JP S623003U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- linearization
- output
- proximity sensor
- 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 6
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案による近接センサの増幅回路及
びリニアライザ回路の一実施例の構成を示す回路
図、第２図は本考案による近接センサの全体構成
を示すブロツク図、第３図は距離の変化に対する
検波出力Ｖ１と増幅回路の反転増幅器及び非反転
増幅器の夫々の出力Ｖ２，Ｖ３の変化を示すグラ
フ、第４図は距離ｌの変化に対するリニアライザ
回路５の入出力電圧Ｖ３，Ｖ４の変化を示すグラ
フである。
Ｒ１〜Ｒ１４……抵抗、Ｄ１１…Ｄ１ｍ……ダ
イオード、１……検出コイル、２……発振回路、
３……検波回路、４……増幅回路、５……リニア
ライザ回路、６……出力回路、８……被検出物体
、１１〜１３……演算増幅器。
Figure 1 is a circuit diagram showing the configuration of an embodiment of the amplification circuit and linearizer circuit of the proximity sensor according to the present invention, Figure 2 is a block diagram showing the overall configuration of the proximity sensor according to the present invention, and Figure 3 is a change in distance. FIG. 4 is a graph showing changes in the detection output V1 and outputs V2 and V3 of the inverting and non-inverting amplifiers of the amplifier circuit, respectively, and FIG. 4 shows changes in the input and output voltages V3 and V4 of the linearizer circuit 5 with respect to changes in distance l. It is a graph. R1 to R14...Resistor, D11...D1m...Diode, 1...Detection coil, 2...Oscillation circuit,
3...Detection circuit, 4...Amplification circuit, 5...Linearizer circuit, 6...Output circuit, 8...Detected object, 11-13...Operation amplifier.
Claims (1)
する発振回路と、前記発振回路の出力を検波し振
幅に応じた直流レベルの信号に変換する検波回路
と、前記検波回路の出力を物体までの距離に対応
させて直線化する直線化回路を有する近接センサ
において、 前記検波回路の出力を所定レベルに増幅して前
記直線化回路に与える増幅回路を具備し、 前記直線化回路は、各基準電圧に抵抗を介して
接続され入力電圧の変化に基づいて順次導通して
入力抵抗値を変化させるダイオード群から成る折
線近似回路を一方の入力端に接続し、他方の入力
端には電圧可変型の基準電圧源を接続した演算増
幅器を有するものであることを特徴とする近接セ
ンサ。 (2) 前記直線化回路の電圧可変型基準電圧源は
、電源電圧を分圧する抵抗分圧回路と前記抵抗分
圧回路を有し、前記抵抗分圧回路の中点を演算増
幅器の入力端に接続したものであることを特徴と
する実用新案登録請求の範囲第１項記載の近接セ
ンサ。[Claims for Utility Model Registration] (1) An oscillation circuit that oscillates with an amplitude that corresponds to the distance of a nearby object, and a detection circuit that detects the output of the oscillation circuit and converts it into a DC level signal that corresponds to the amplitude; A proximity sensor having a linearization circuit that linearizes the output of the detection circuit in accordance with a distance to an object, comprising an amplification circuit that amplifies the output of the detection circuit to a predetermined level and supplies it to the linearization circuit, In the linearization circuit, a broken line approximation circuit consisting of a group of diodes connected to each reference voltage via a resistor and sequentially turned on to change the input resistance value based on changes in the input voltage is connected to one input end, and the other is connected to the linearization circuit. 1. A proximity sensor comprising an operational amplifier connected to an input terminal of the voltage variable reference voltage source. (2) The variable voltage reference voltage source of the linearization circuit has a resistive voltage dividing circuit that divides the power supply voltage and the resistive voltage dividing circuit, and connects the midpoint of the resistive voltage dividing circuit to the input terminal of the operational amplifier. The proximity sensor according to claim 1, which is a connected sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9462385U JPS623003U (en) | 1985-06-21 | 1985-06-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9462385U JPS623003U (en) | 1985-06-21 | 1985-06-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS623003U true JPS623003U (en) | 1987-01-09 |
Family
ID=30653280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9462385U Pending JPS623003U (en) | 1985-06-21 | 1985-06-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623003U (en) |
-
1985
- 1985-06-21 JP JP9462385U patent/JPS623003U/ja active Pending
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