JPS63101856U - - Google Patents
Info
- Publication number
- JPS63101856U JPS63101856U JP19579686U JP19579686U JPS63101856U JP S63101856 U JPS63101856 U JP S63101856U JP 19579686 U JP19579686 U JP 19579686U JP 19579686 U JP19579686 U JP 19579686U JP S63101856 U JPS63101856 U JP S63101856U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- particle
- optical fiber
- measuring device
- counter circuit
- 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
- 239000002245 particle Substances 0.000 claims description 10
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000002238 attenuated effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 2
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
第１図乃至第６図は本考案の一実施例を示すも
ので、第１図は本考案に係る粒子特性測定装置を
示すブロツク図、第２図は光フアイバの減衰光の
時間遅れを示す波形図、第３図は光フアイバの先
端を通過する粒子の状態を示す説明図、第４図ａ
，ｂは減衰光に伴う電圧変化を示すもので、第４
図ａは波形整形前の信号を示す波形図、第４図ｂ
は波形整形後の信号を示す波形図、第５図はＡＮ
Ｄ回路８ｂへの入力信号を示す波形図、第６図は
ＡＮＤ回路９ｂへの入力信号を示す波形図、第７
図及び第８図ａ，ｂは従来例を示すもので、第７
図は粒子特性測定装置を示すブロツク図、第８図
ａは光フアイバの側面図、第８図ｂは光フアイバ
の端面図である。
図中、１…投光源、２ａ，２ｂ…光フアイバ、
６…ＦＦＴアナライザ、８…信号数カウンタ回路
、９…信号幅カウンタ回路、Ａ…粒子。
Figures 1 to 6 show an embodiment of the present invention. Figure 1 is a block diagram showing a particle characteristic measuring device according to the present invention, and Figure 2 shows the time delay of the attenuated light of the optical fiber. Waveform diagram, Figure 3 is an explanatory diagram showing the state of particles passing through the tip of the optical fiber, Figure 4a
, b indicates the voltage change accompanying the attenuated light, and the fourth
Figure a is a waveform diagram showing the signal before waveform shaping, Figure 4 b
is a waveform diagram showing the signal after waveform shaping, and Figure 5 is AN
FIG. 6 is a waveform diagram showing the input signal to the D circuit 8b, FIG. 6 is a waveform diagram showing the input signal to the AND circuit 9b, and FIG.
Figures 7 and 8a and b show conventional examples.
The figure is a block diagram showing a particle characteristic measuring device, FIG. 8a is a side view of the optical fiber, and FIG. 8b is an end view of the optical fiber. In the figure, 1...light source, 2a, 2b...optical fibers,
6...FFT analyzer, 8...signal number counter circuit, 9...signal width counter circuit, A...particle.
Claims (1)
粒子群の移動方向に沿つて配置した該投光源の光
を受光する少なくとも２個の光フアイバとを設け
、該各光フアイバでの減衰光の相互相関係数が最
大値となる時間遅延量ｔを求めて、該各光フアイ
バ間の距離ｌより流子速度ｓ＝ｌ／ｔを演算する
演算手段を設けた粒子特性測定装置において、前
記演算手段は前記各光フアイバの所定時間内にお
ける減衰信号を計数する信号数カウンタ回路の出
力信号に基づき粒子群濃度を演算し、また、該減
衰信号の信号幅を計測する信号幅カウンタ回路の
出力信号に基づき粒子径を演算することを特徴と
する粒子特性測定装置。 A light source and at least two optical fibers arranged along the movement direction of the particle group and receiving light from the light source are provided with a group of particles such as sprayed fuel interposed therebetween, and each optical fiber In a particle characteristic measuring device provided with a calculation means for determining the time delay amount t at which the cross-correlation coefficient of the attenuated light becomes the maximum value, and calculating the fluid velocity s=l/t from the distance l between the respective optical fibers. , the calculation means calculates the particle group concentration based on the output signal of a signal number counter circuit that counts attenuation signals of each optical fiber within a predetermined time, and also includes a signal width counter circuit that measures the signal width of the attenuation signal. A particle characteristic measuring device characterized in that a particle diameter is calculated based on an output signal of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19579686U JPS63101856U (en) | 1986-12-22 | 1986-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19579686U JPS63101856U (en) | 1986-12-22 | 1986-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63101856U true JPS63101856U (en) | 1988-07-02 |
Family
ID=31154016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19579686U Pending JPS63101856U (en) | 1986-12-22 | 1986-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63101856U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171279A (en) * | 1981-04-15 | 1982-10-21 | Suteo Tsutsumi | Photoelectric pluviometer |
| JPS57179728A (en) * | 1981-04-30 | 1982-11-05 | Toa Medical Electronics Co Ltd | Apparatus for analyzing particle |
| JPS58205858A (en) * | 1982-05-25 | 1983-11-30 | Mitsubishi Heavy Ind Ltd | Apparatus for measuring speed |
| JPS60140139A (en) * | 1983-12-27 | 1985-07-25 | Toa Medical Electronics Co Ltd | Particle counting apparatus |
-
1986
- 1986-12-22 JP JP19579686U patent/JPS63101856U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57171279A (en) * | 1981-04-15 | 1982-10-21 | Suteo Tsutsumi | Photoelectric pluviometer |
| JPS57179728A (en) * | 1981-04-30 | 1982-11-05 | Toa Medical Electronics Co Ltd | Apparatus for analyzing particle |
| JPS58205858A (en) * | 1982-05-25 | 1983-11-30 | Mitsubishi Heavy Ind Ltd | Apparatus for measuring speed |
| JPS60140139A (en) * | 1983-12-27 | 1985-07-25 | Toa Medical Electronics Co Ltd | Particle counting apparatus |
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