JPS61161658U - - Google Patents
Info
- Publication number
- JPS61161658U JPS61161658U JP4389185U JP4389185U JPS61161658U JP S61161658 U JPS61161658 U JP S61161658U JP 4389185 U JP4389185 U JP 4389185U JP 4389185 U JP4389185 U JP 4389185U JP S61161658 U JPS61161658 U JP S61161658U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- excitation coil
- detection
- sets
- reference 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Description
第１図はこの考案の溶接継ぎ目検出装置の一例
を示すもので、装置の構成を示すブロツク図、お
よび第２図は溶接継ぎ目と凹凸による出力信号の
レベルを示す線図である。
１…検出部、３…励磁コイル、４，５…検出コ
イル、１１…信号処理部、１２…発振回路、１３
〜１６…増幅回路、１７，１８…位相回路、１９
…差動増幅回路、２０，２３…帯域増幅回路、２
２…検波回路、２５…比較回路、２６…設定回路
。
FIG. 1 shows an example of the weld seam detection device of this invention, and is a block diagram showing the configuration of the device, and FIG. 2 is a diagram showing the level of the output signal due to the weld seam and irregularities. DESCRIPTION OF SYMBOLS 1... Detection part, 3... Excitation coil, 4, 5... Detection coil, 11... Signal processing part, 12... Oscillation circuit, 13
~16...Amplification circuit, 17,18...Phase circuit, 19
... Differential amplifier circuit, 20, 23 ... Bandwidth amplifier circuit, 2
2...Detection circuit, 25...Comparison circuit, 26...Setting circuit.
Claims (1)
の検出コイル、励磁コイルに交流電流を供給する
発振回路、２組の検出コイルの出力信号の差の信
号を検波する検波回路、検波回路からの信号を参
照信号と比較する比較回路とからなる装置におい
て、前記比較回路は参照信号が可変であることを
特徴とする溶接継ぎ目検出装置。 An excitation coil, two sets of detection coils adjacent to both sides of the excitation coil, an oscillation circuit that supplies alternating current to the excitation coil, a detection circuit that detects the difference between the output signals of the two sets of detection coils, and a signal from the detection circuit. and a comparison circuit that compares the weld seam with a reference signal, wherein the reference signal of the comparison circuit is variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985043891U JPH0326467Y2 (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985043891U JPH0326467Y2 (en) | 1985-03-28 | 1985-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61161658U true JPS61161658U (en) | 1986-10-07 |
| JPH0326467Y2 JPH0326467Y2 (en) | 1991-06-07 |
Family
ID=30555976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985043891U Expired JPH0326467Y2 (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326467Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924282A (en) * | 1982-07-31 | 1984-02-07 | Anritsu Corp | Apparatus for detecting metal |
-
1985
- 1985-03-28 JP JP1985043891U patent/JPH0326467Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924282A (en) * | 1982-07-31 | 1984-02-07 | Anritsu Corp | Apparatus for detecting metal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326467Y2 (en) | 1991-06-07 |