JPS63174066U - - Google Patents
Info
- Publication number
- JPS63174066U JPS63174066U JP16007586U JP16007586U JPS63174066U JP S63174066 U JPS63174066 U JP S63174066U JP 16007586 U JP16007586 U JP 16007586U JP 16007586 U JP16007586 U JP 16007586U JP S63174066 U JPS63174066 U JP S63174066U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- thermistor
- flow velocity
- correction circuit
- temperature
- 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
- 238000009529 body temperature measurement Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
Landscapes
- Details Of Flowmeters (AREA)
- Measuring Volume Flow (AREA)
Description
第１図は本考案の直熱一定電流型サーミスタ式
流速計の構成を示すブロツク図、第２図は、サー
ミスタの負性抵抗領域における温度―電圧特性を
示すグラフ、第３図は本考案の流速ゼロ点補正回
路における制御の動作を示すグラフ、第４図はサ
ーミスタの負性抵抗領域における流速感度―温度
特性を示すグラフ、第５図は本考案の流速感度補
正回路における制御の動作を示すグラフ、第６図
はリニアライズ回路に入力される流速―電圧特性
を示すグラフ、第７図は本考案のリニアライズ回
路の出力特性を示すグラフ、第８図は本考案の具
体的な実施例を示すブロツク図、第９図は本考案
のゼロ点補正回路の構成を示す回路図、第１０図
ａ，ｂはそれぞれ本考案の各サーミスタの配置状
態を示す説明図、同図Ｃは流速測定用と温度測定
用のサーミスタを対にして設ける場合の説明図、
第１１図ａ，ｂはそれぞれ本考案の装置を適用す
る場合の例を示す斜視図である。
図中の符号、１……流速測定用サーミスタ、２
……温度測定用サーミスタ、５……サーミスタ固
定ブロツク、６……フレキシブルチユーブ、７…
…保持部材、８……固定台、９……定電圧電源、
１０……温度測定回路、１１……定電流回路、１
２……基準電圧回路、１３……ブリツジ回路、１
４……増幅回路、１５……表示回路、２０……流
速測定回路、２１……増幅回路、２２……流速ゼ
ロ点補正回路、２３……感度補正回路、２４……
リニアライズ回路、２５……２乗回路、２５……
表示回路。
Fig. 1 is a block diagram showing the configuration of the direct heating constant current type thermistor current meter of the present invention, Fig. 2 is a graph showing the temperature-voltage characteristics of the thermistor in the negative resistance region, and Fig. 3 is a graph showing the temperature-voltage characteristics of the thermistor in the negative resistance region. A graph showing the control operation in the flow velocity zero point correction circuit, Fig. 4 is a graph showing the flow velocity sensitivity-temperature characteristic in the negative resistance region of the thermistor, and Fig. 5 shows the control operation in the flow velocity sensitivity correction circuit of the present invention. Graphs, Figure 6 is a graph showing the flow velocity-voltage characteristics input to the linearization circuit, Figure 7 is a graph showing the output characteristics of the linearization circuit of the present invention, and Figure 8 is a specific example of the present invention. Figure 9 is a circuit diagram showing the configuration of the zero point correction circuit of the present invention, Figures 10a and b are explanatory diagrams showing the arrangement of each thermistor of the present invention, and Figure C is a flow velocity measurement diagram. An explanatory diagram when installing a thermistor for temperature measurement and a thermistor for temperature measurement as a pair,
FIGS. 11a and 11b are perspective views each showing an example in which the apparatus of the present invention is applied. Symbols in the diagram: 1...Thermistor for flow velocity measurement, 2
...Thermistor for temperature measurement, 5...Thermistor fixing block, 6...Flexible tube, 7...
...Holding member, 8...Fixing base, 9...Constant voltage power supply,
10... Temperature measurement circuit, 11... Constant current circuit, 1
2... Reference voltage circuit, 13... Bridge circuit, 1
4...Amplification circuit, 15...Display circuit, 20...Flow velocity measurement circuit, 21...Amplification circuit, 22...Flow velocity zero point correction circuit, 23...Sensitivity correction circuit, 24...
Linearization circuit, 25... Square circuit, 25...
display circuit.
Claims (1)
ミスタを用い、それらの検知値の処理回路を互い
に独立して構成し、 サーミスタの負性抵抗領域における測定電流が
一定の場合に、流速―電圧特性が直線的に変化す
るような処理回路を設け、かつ、ゼロ点補正と感
度補正回路とを互いに独立させて構成してなる温
度補正回路と、 該温度補正回路に続いて設けられ、２乗回路と
折線近似回路とを組み合わせて構成してなるリニ
アライズ回路とから構成されたことを特徴とする
直熱一定電流型サーミスタ式流速計。[Claims for Utility Model Registration] Thermistors of the same standard are used in the temperature measurement circuit and flow velocity measurement circuit, and the processing circuits for these detected values are configured independently of each other, so that the measured current in the negative resistance region of the thermistor is constant. In this case, a temperature correction circuit is provided, which includes a processing circuit in which the flow velocity-voltage characteristic changes linearly, and a zero point correction circuit and a sensitivity correction circuit are configured independently of each other; 1. A directly heated constant current type thermistor type anemometer, characterized in that it is provided with a linearizing circuit configured by combining a square circuit and a broken line approximation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16007586U JPS63174066U (en) | 1986-10-21 | 1986-10-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16007586U JPS63174066U (en) | 1986-10-21 | 1986-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63174066U true JPS63174066U (en) | 1988-11-11 |
Family
ID=31085111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16007586U Pending JPS63174066U (en) | 1986-10-21 | 1986-10-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174066U (en) |
-
1986
- 1986-10-21 JP JP16007586U patent/JPS63174066U/ja active Pending
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