JPS61110151U - - Google Patents
Info
- Publication number
- JPS61110151U JPS61110151U JP20153484U JP20153484U JPS61110151U JP S61110151 U JPS61110151 U JP S61110151U JP 20153484 U JP20153484 U JP 20153484U JP 20153484 U JP20153484 U JP 20153484U JP S61110151 U JPS61110151 U JP S61110151U
- Authority
- JP
- Japan
- Prior art keywords
- conversion circuit
- variable means
- viscometer
- rotor
- signal output
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Electric Motors In General (AREA)
Description
第１図は本考案の第１実施例に係る粘度計のＤ
／Ｄ変換回路のブロツク図、第２図は第１図に示
したＤ／Ｄ変換回路のうちの二重積分Ａ／Ｄコン
バータのタイミングチヤート、第３図は本考案の
第２実施例に係る粘度計本体の概要図、第４図は
本考案の第２実施例に係る粘度計の電気的ブロツ
ク図、第５図および第６図は第４図を説明するた
めのタイミングチヤート、第７図は本考案の第２
実施例に係る粘度計のＤ／Ｄ変換回路、第８図は
従来技術の粘度計本体の概要図、第９図は第８図
の一部省略した側面図、第１０図は従来技術の粘
度計の電気回路図である。
１０，６０…モータ、１４，６８…バネ、１８
，７２…ロータ、３２…位相検出回路、４４，１
０２…Ｄ／Ａ変換回路としての乗算型Ｄ／Ａコン
バータ、４６…可変手段としての可変抵坑、４８
，１１４…Ａ／Ｄ変換回路としての二重積分Ａ／
Ｄコンバータ、５４，１２０…基準電源、７４…
第１の回転検出板としてのエンコーダ、７６…第
２の回転検出板としてのエンコーダ、１００…第
１の位相検出手段としてのＵ／Ｄカウンタ、１０
４…加算回路、１０６…第２の位相検出手段とし
ての位相電圧変換回路、１１２…可変手段として
の乗算型Ｄ／Ａコンバータ。
Figure 1 shows D of the viscometer according to the first embodiment of the present invention.
FIG. 2 is a timing chart of the double integral A/D converter of the D/D conversion circuit shown in FIG. 1, and FIG. 3 is a block diagram of the D/D conversion circuit shown in FIG. FIG. 4 is an electrical block diagram of the viscometer according to the second embodiment of the present invention, FIGS. 5 and 6 are timing charts for explaining FIG. 4, and FIG. 7 is a schematic diagram of the viscometer main body. is the second part of this invention
The D/D conversion circuit of the viscometer according to the example, FIG. 8 is a schematic diagram of the main body of the viscometer of the prior art, FIG. 9 is a side view with a part of FIG. 8 omitted, and FIG. 10 is the viscosity of the prior art. FIG. 3 is an electrical circuit diagram of the meter. 10,60...Motor, 14,68...Spring, 18
, 72... Rotor, 32... Phase detection circuit, 44, 1
02... Multiplying type D/A converter as D/A conversion circuit, 46... Variable resistor as variable means, 48
, 114...Double integral A/ as an A/D conversion circuit
D converter, 54, 120... Reference power supply, 74...
Encoder as first rotation detection plate, 76... Encoder as second rotation detection plate, 100... U/D counter as first phase detection means, 10
4...Addition circuit, 106...Phase voltage conversion circuit as second phase detection means, 112...Multiplication type D/A converter as variable means.
Claims (1)
のロータをバネを介して垂下し且つこれらを一体
的に回転駆動せしめるモータとを備えた粘度計に
おいて、 前記モータと前記ロータとの位相差をデジタル
出力する位相検出回路を備え、 該位相検出回路より出力されるデジタル信号を
アナログ信号に変換するＤ／Ａ変換回路と、該Ｄ
／Ａ変換回路より出力されるアナログ信号を可変
せしめる可変手段と、該可変手段より出力される
アナログ信号をデジタル信号に変換するＡ／Ｄ変
換回路とを具備するとともに、 前記Ｄ／Ａ変換回路と前記Ａ／Ｄ変換回路の各
基準電源を１つの電源により切換え使用する構成
としたことを特徴とする粘度計。 (2) 前記可変手段が、可変手段により構成され
ていることを特徴とした実用新案登録請求の範囲
第１項記載の粘度計。 (3) 前記可変手段が、乗算型Ｄ／Ａ変換回路に
より構成されていることを特徴とした実用新案登
録請求の範囲第１項記載の粘度計。[Claims for Utility Model Registration] (1) A viscometer that includes a rotor that is introduced into a fluid to be measured, and a motor that suspends this rotor via a spring and rotates them integrally, a D/A conversion circuit that includes a phase detection circuit that digitally outputs a phase difference between the motor and the rotor, and that converts a digital signal output from the phase detection circuit into an analog signal;
A variable means for varying the analog signal output from the /A conversion circuit, and an A/D conversion circuit for converting the analog signal output from the variable means into a digital signal, and the D/A conversion circuit and A viscometer characterized in that each reference power source of the A/D conversion circuit is switched and used by one power source. (2) The viscometer according to claim 1, wherein the variable means is constituted by a variable means. (3) The viscometer according to claim 1, wherein the variable means is constituted by a multiplication type D/A conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20153484U JPS61110151U (en) | 1984-12-25 | 1984-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20153484U JPS61110151U (en) | 1984-12-25 | 1984-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61110151U true JPS61110151U (en) | 1986-07-12 |
Family
ID=30763417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20153484U Pending JPS61110151U (en) | 1984-12-25 | 1984-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61110151U (en) |
-
1984
- 1984-12-25 JP JP20153484U patent/JPS61110151U/ja active Pending
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