JPS63101855U - - Google Patents
Info
- Publication number
- JPS63101855U JPS63101855U JP19579786U JP19579786U JPS63101855U JP S63101855 U JPS63101855 U JP S63101855U JP 19579786 U JP19579786 U JP 19579786U JP 19579786 U JP19579786 U JP 19579786U JP S63101855 U JPS63101855 U JP S63101855U
- Authority
- JP
- Japan
- Prior art keywords
- particle
- optical fibers
- optical fiber
- group
- light
- 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
- 239000013307 optical fiber Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 13
- 230000002238 attenuated effect Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 2
Landscapes
- Light Guides In General And Applications Therefor (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図は光フアイバを示す端面
図、第３図は光フアイバでの減衰光の時間遅れを
示す波形図、第４図は光フアイバの先端を通過す
る粒子の状態を示す概略図、第５図ａ，ｂは減衰
光に伴う電圧変化を示すもので、第５図ａは波形
整形前の信号を示す波形図、第５図ｂは波形整形
後の信号を示す波形図、第６図はＡＮＤ回路への
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、２，２ａ，２ｂ…光フアイ
バ、６…制御手段（ＦＦＴアナライザ）、Ａ…粒
子。
1 to 6 show an embodiment of the present invention, in which FIG. 1 is a block diagram showing a particle characteristic measuring device according to the present invention, FIG. 2 is an end view showing an optical fiber, and FIG. Figure 4 is a waveform diagram showing the time delay of attenuated light in the optical fiber, Figure 4 is a schematic diagram showing the state of particles passing through the tip of the optical fiber, and Figures 5 a and b show voltage changes associated with attenuated light. FIG. 5a is a waveform diagram showing the signal before waveform shaping, FIG. 5b is a waveform diagram showing the signal after waveform shaping, FIG. 6 is a waveform diagram showing the input signal to the AND circuit, and FIG. and Figure 8 a, b
7 shows a conventional example, FIG. 7 is a block diagram showing a particle characteristic measuring device, FIG. 8a is a side view of an optical fiber, and FIG. 8b is an end view of the optical fiber. In the figure, 1...light projection source, 2, 2a, 2b...optical fibers, 6...control means (FFT analyzer), A...particles.
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より粒子速度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
記各光フアイバ中の一個を中央に設けるとともに
、該中央の光フアイバの周囲に相互に対向する一
対の各光フアイバを複数配置し、前記演算手段は
該一対の各光フアイバからの出力信号に基づき粒
子速度を演算し、また、該中央の光フアイバにお
ける前記粒子群が通過したときの光強度と該粒子
群が通過しないときの光強度とを比較して粒子群
濃度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 reaches a maximum value and calculating the particle velocity s=l/t from the distance l between the respective optical fibers, One of the optical fibers is provided in the center, and a plurality of pairs of optical fibers facing each other are arranged around the central optical fiber, and the calculation means calculates the output signal from each of the pair of optical fibers. The method is characterized in that the particle velocity is calculated based on the optical fiber, and the concentration of the particle group is calculated by comparing the light intensity when the particle group passes through the central optical fiber with the light intensity when the particle group does not pass through. Particle property measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19579786U JPS63101855U (en) | 1986-12-22 | 1986-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19579786U JPS63101855U (en) | 1986-12-22 | 1986-12-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63101855U true JPS63101855U (en) | 1988-07-02 |
Family
ID=31154017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19579786U Pending JPS63101855U (en) | 1986-12-22 | 1986-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63101855U (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 JP19579786U patent/JPS63101855U/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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