JPH0288115U - - Google Patents
Info
- Publication number
- JPH0288115U JPH0288115U JP16858288U JP16858288U JPH0288115U JP H0288115 U JPH0288115 U JP H0288115U JP 16858288 U JP16858288 U JP 16858288U JP 16858288 U JP16858288 U JP 16858288U JP H0288115 U JPH0288115 U JP H0288115U
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- detection means
- fluid
- maximum
- extreme value
- 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 8
- 239000012530 fluid Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measuring Volume Flow (AREA)
Description
第１〜３図は本考案に係る流量計測装置の一実
施例を示す図であり、第１図はそのブロツク図、
第２図はその熱線式流量計の出力と吸入空気量と
の関係を示す図、第３図はその空気流量平均値の
テーブルマツプを示す図、第４図は従来の熱線式
流量計を示す回路図、第５図は従来の熱線式流量
計の特性を示す図である。
１……吸気管、２……オペアンプ、３……トラ
ンジスタ、４……バツテリ、１０……熱線式流量
計、１１……最大出力検出回路、１２……最小出
力検出回路、１３……平均流速検出回路、１４…
…流量算出回路、１５……極値検出手段、１６…
…流量算出手段。
1 to 3 are diagrams showing an embodiment of the flow rate measuring device according to the present invention, and FIG. 1 is a block diagram thereof;
Figure 2 shows the relationship between the output of the hot wire flowmeter and the amount of intake air, Figure 3 shows a table map of the average air flow rate, and Figure 4 shows the conventional hot wire flowmeter. The circuit diagram, FIG. 5, is a diagram showing the characteristics of a conventional hot wire flowmeter. 1... Intake pipe, 2... Operational amplifier, 3... Transistor, 4... Battery, 10... Hot wire flowmeter, 11... Maximum output detection circuit, 12... Minimum output detection circuit, 13... Average flow velocity Detection circuit, 14...
...Flow rate calculation circuit, 15...Extreme value detection means, 16...
...Flow rate calculation means.
Claims (1)
号を出力する熱線式の流量検出手段と、流量検出
手段の出力のうち所定時間内における出力の量大
値と最小値を検出する極値検出手段と、極値検出
手段からの最大値、最小値に基づいて流体の平均
流速を求め、該平均流速から流体の流量を算出す
る流量算出手段と、を備えたことを特徴とする流
量計測装置。 Hot-wire type flow rate detection means that outputs a signal corresponding to the flow rate of fluid flowing in a predetermined pipe line, and extreme value detection that detects the maximum and minimum values of the output of the flow rate detection means within a predetermined time. and a flow rate calculation means for determining the average flow velocity of the fluid based on the maximum value and minimum value from the extreme value detection means and calculating the flow rate of the fluid from the average flow velocity. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16858288U JPH0288115U (en) | 1988-12-26 | 1988-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16858288U JPH0288115U (en) | 1988-12-26 | 1988-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0288115U true JPH0288115U (en) | 1990-07-12 |
Family
ID=31457883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16858288U Pending JPH0288115U (en) | 1988-12-26 | 1988-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0288115U (en) |
-
1988
- 1988-12-26 JP JP16858288U patent/JPH0288115U/ja active Pending
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