JPS5968635A - Error correcting device of semiconductor pressure sensor - Google Patents
Error correcting device of semiconductor pressure sensorInfo
- Publication number
- JPS5968635A JPS5968635A JP18033882A JP18033882A JPS5968635A JP S5968635 A JPS5968635 A JP S5968635A JP 18033882 A JP18033882 A JP 18033882A JP 18033882 A JP18033882 A JP 18033882A JP S5968635 A JPS5968635 A JP S5968635A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pressure sensor
- measured
- solenoid valve
- air
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/02—Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring device; Zero-setting means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は、半導体圧力センサの誤差補正装置に関する。[Detailed description of the invention] The present invention relates to an error correction device for a semiconductor pressure sensor.
車両に於いて、懸架装置を構成する空気ばねの空気圧力
、エンジンの吸気管負圧等を検出する為に半導体圧カセ
/すが用いられる。この半導体圧力センサは、工場製造
時の段階ではその圧力−電圧特性にばらつきがあシ、第
1図に示す理想直線Aに対してその値き、零点電圧とも
異なっている。In vehicles, semiconductor pressure cassettes are used to detect air pressure in air springs forming a suspension system, negative pressure in an engine intake pipe, and the like. This semiconductor pressure sensor has variations in its pressure-voltage characteristics at the time of factory manufacturing, and its value and zero point voltage are different from the ideal straight line A shown in FIG.
半導体圧力センサの圧カー電圧特性が@線Aからずれる
と、その半導体圧力センサの測定値には誤差が含まれる
ことになシ、従って半導体圧力センサの工場出荷時には
その圧力−電圧特性か直線AとなるようにA整して出荷
するのが好ましい。しかしながら、半導体圧力センサの
圧カー′電圧特性が直mAとなるように調整するとその
調整作粟には手数がかかシ、半導体圧力センサの1+I
fi格が出荷する不具合がある。If the pressure voltage characteristic of a semiconductor pressure sensor deviates from the @ line A, the measured value of that semiconductor pressure sensor will contain an error. It is preferable to ship the product with A adjustment so that it becomes . However, adjusting the voltage characteristic of the semiconductor pressure sensor so that it becomes direct mA requires a lot of effort, and the 1+I of the semiconductor pressure sensor
There is a problem with shipping with fi rating.
また、半導体圧力センサの測定値には、前記中る。Furthermore, the values measured by the semiconductor pressure sensor include the above-mentioned values.
本発明は、このような事情に鑑みてなされたもので、半
導体圧力センサの調整のうち比軟的容易に行い得る特性
直線の傾きのみを調整したもの(例えば第1図にB線で
示す)を使用可能と(〜て安価な半導体センサを使用し
得るように零点電圧の補正を可能にし、しかも外部要因
による誤差を消去できる測定が可能な誤差補正装置を提
案することを目的とする。The present invention has been made in view of the above circumstances, and is a method in which only the slope of the characteristic line, which can be relatively easily adjusted among the adjustments of the semiconductor pressure sensor (for example, shown by line B in FIG. 1), is provided. The purpose of the present invention is to propose an error correction device that can correct the zero point voltage so that an inexpensive semiconductor sensor can be used, and can also perform measurements that can eliminate errors caused by external factors.
本発明は、前記目的を達成する為に、被測定部と半纏体
圧力センナの取付室とを連通ずる通路に通路開閉用電磁
弁を設け、大気側と圧力センサの取付室とを連通ずる通
路に大気側開閉用電磁弁を設け、通路開閉用電磁弁と大
気側開閉用電磁弁とを制御部で制御し、更に前記制御部
は半導体圧力センサで測定した大気圧値を記憶すると共
に半導体圧力センサで測定した被測定室の圧力値と記憶
していた大気圧値との差圧値を演算して求めることを特
徴としている。In order to achieve the above object, the present invention provides a passage opening/closing solenoid valve in a passage communicating between the part to be measured and the mounting chamber of the semi-integrated pressure sensor, and a passage communicating between the atmospheric side and the mounting chamber of the pressure sensor. A solenoid valve for opening/closing the atmosphere side is provided in the controller, and the solenoid valve for opening/closing the passageway and the solenoid valve for opening/closing the atmosphere side are controlled by a control section, and furthermore, the control section stores the atmospheric pressure value measured by the semiconductor pressure sensor, and also stores the atmospheric pressure value measured by the semiconductor pressure sensor. It is characterized by calculating the differential pressure value between the pressure value in the chamber to be measured measured by the sensor and the stored atmospheric pressure value.
以下、添付図面に従って自動2輪車に適用した本発明に
係る半纏体圧カセンサの誤差補正装置の好ましい実施例
を詳説する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the error correction device for a half-wrapped body pressure sensor according to the present invention applied to a two-wheeled motor vehicle will be described in detail below with reference to the accompanying drawings.
第2図は、本実施例が適用される自動2輪車の概略形状
が示され、10は前輪懸架装置を構成するフロントフォ
ーク、12は後輪懸架装置を構成する緩衝器である。フ
ロントフォーク10の上部には図示しない空気はねの空
気室が形成され、こ立
の空気室には送気用の管14が述べされている。FIG. 2 shows the general shape of a two-wheeled motor vehicle to which this embodiment is applied, in which 10 is a front fork forming a front wheel suspension system, and 12 is a shock absorber forming a rear wheel suspension system. An air chamber for air splashes (not shown) is formed in the upper part of the front fork 10, and an air supply pipe 14 is provided in the vertical air chamber.
また、緩衝器12の上部には図示しない空気ばねの空気
室が形成さ牡、この空気室には送気用の青16が連通ぜ
れる。同、18は管14の開閉用′電磁弁、20は看1
6の開閉用電磁弁である。Further, an air chamber of an air spring (not shown) is formed in the upper part of the shock absorber 12, and a blue air supply 16 is communicated with this air chamber. 18 is a solenoid valve for opening and closing the pipe 14, and 20 is a solenoid valve for opening and closing the pipe 14.
This is a solenoid valve for opening and closing No. 6.
第3図ではフロントフォーク10.緩衝器12の空気圧
力を調整するだめの配管図が示され、フロントフォーク
10の空気室は、・び14、中、磁弁18、管22、逆
止弁24、除湿器26を介して空気ポンプ28と連通さ
れている。同様に緩衝器12の空気室は管16、電磁弁
20、青22を介して空気ポンプ28と連通されている
。管22には、一端が大気側に開放しだ一!#30が接
続され、 4この管30には開閉用電磁弁32が設けら
れている。管22には、半導体圧力センサ34が接続さ
れ、フロントフォーク10並びに緩衝器12における被
測定部としての空気率の柴気圧及び大気圧を測定する。In Figure 3, front fork 10. A piping diagram for adjusting the air pressure of the shock absorber 12 is shown. It is in communication with the pump 28. Similarly, the air chamber of the shock absorber 12 is communicated with an air pump 28 via a pipe 16, a solenoid valve 20, and a blue valve 22. The pipe 22 has one end open to the atmosphere! #30 is connected, and this pipe 30 is provided with an opening/closing solenoid valve 32. A semiconductor pressure sensor 34 is connected to the pipe 22 and measures the air pressure and atmospheric pressure of the front fork 10 and the shock absorber 12 as measured parts.
尚、36は空気ポンプ28の、駆動モータ、38は空気
取入用フィルタである。同、管22.30は半4 f−
に圧力センサの取付室を構成しゞ肖・14.16は阪測
足部と半導体圧力センサとを連通する通路をオh成して
いる。Note that 36 is a drive motor of the air pump 28, and 38 is an air intake filter. Same, tube 22.30 is half 4 f-
14.16 constitutes a pressure sensor mounting chamber, and port 14.16 forms a passage communicating between the pressure measuring section and the semiconductor pressure sensor.
H7ll fi印部40には、千N隻体圧カセンサ34
からの111+11定伯号が人力され、この人力信号に
基づいて制御部@40は電磁弁18,20.32を作動
させる。制御装置400本1゛4成について第4図を中
心に説明すると、A/l)変換器42は圧力センサ34
からの測ボイー号を1927111号に変換し、・(ス
ライン44に出力する。几0M46には、電磁弁18゜
20.32の開側1と誤差補正の処理の為のプログラム
がi己憶される。CPU48はRUM46の)。The H7ll fi mark part 40 has a 1,000N body pressure sensor 34.
111+11 Dinghaku No. is input manually, and the control unit @40 operates the solenoid valves 18, 20, and 32 based on this human input signal. The 400 control devices (1/4 configuration) will be explained with reference to FIG.
Converts the measurement boe number from 1927111 and outputs it to the line 44. The program for processing the open side 1 of the solenoid valve 18° 20.32 and error correction is stored in the 0M46. (The CPU 48 is the RUM 46).
ログラム(二従ってフロントフォーク10、緩衝器12
の空気至の圧力値と大気圧呟との差圧値を求める演算、
rN N: して求めた差圧値と予め設定された)′J
[望圧力埴との比軟判定、および制御指令を出力する。program (two front forks 10, shock absorbers 12)
Calculation to find the differential pressure value between the air pressure value and the atmospheric pressure value,
rN N: The differential pressure value obtained by
[Determine the relative softness of the desired pressure and output the control command.]
RA M 50は圧力センサ34からの測定信号および
C)’U48による演算結果を一時的(:記・1球し、
出力インタフェイス52はCP U 4875−らの制
御指令を駆動回路54に出力する8駆動回路54は、出
力インタフェイス52からの信号を受けて電磁弁18,
20.32を作動させる。The RAM 50 temporarily outputs the measurement signal from the pressure sensor 34 and the calculation result from C)'U48.
The output interface 52 outputs control commands from the CPU 4875 to the drive circuit 54. The drive circuit 54 receives signals from the output interface 52 and operates the solenoid valves 18,
20. Activate 32.
制御部40には、操作盤56、表示装置58が接続され
ている。操作盤56には、空気ばねの硬・軟切換卸、前
輪側空気ばね・後輪側空気ばねの切換釦等が設けられ、
表示装置58には大気圧力、被測定室の圧力等が表示さ
れる。An operation panel 56 and a display device 58 are connected to the control unit 40 . The operation panel 56 is provided with buttons for switching between hard and soft air springs, front wheel air springs, rear wheel air springs, etc.
The display device 58 displays atmospheric pressure, pressure in the chamber to be measured, and the like.
前記の如く構成された本実施例の作動を第5図を中心に
説明する。先ず、フロントフォーク10の空気ばねの圧
力測定について説明する。車両のイグニツンヨンスイッ
チをオンすると、電磁弁32が制御装置40からの信号
を受けて作動し、青30の一端を大気側に一定時間開放
する。圧力センサ34は、(Pa(基準大気圧)+△P
(誤差))を測定値として測定し、制御装置40はこれ
を記憶する1次に、電磁弁32は制御装置40からの信
号を受けて作動し、管30を閉じる。次に、’に磁弁1
8は、制御装置40からの信号を受けて作動し、管14
を介してフロントフォーク1,0内の空気室と官22と
を連通ずる。圧力センサ34は、(Pf(6(り雑用)
+△P(誤差))をフロントフォーク10の生気室の圧
力測定値として測定し、これを制御装置40に入力する
。制御装置40は空気¥の圧力測定値とi己憶していた
大気圧値との差圧を求める。即ち制御装置40は演算i
Pf+△P ) −(Pa 十ΔP ) lを行い、差
圧Pf−Paを求める。この測定処理において、差圧P
f−Paには半纒体圧カセンサにおける零点電圧及び外
部侠因による誤差△Pが含捷れない。The operation of this embodiment configured as described above will be explained with reference to FIG. First, measurement of the pressure of the air spring of the front fork 10 will be explained. When the ignition switch of the vehicle is turned on, the solenoid valve 32 operates in response to a signal from the control device 40 and opens one end of the blue valve 30 to the atmosphere for a certain period of time. The pressure sensor 34 is (Pa (reference atmospheric pressure) + △P
(error)) is measured as a measurement value, and the control device 40 stores this.Then, the solenoid valve 32 receives a signal from the control device 40 and operates to close the pipe 30. Next, 'magnetic valve 1
8 operates in response to a signal from the control device 40, and the pipe 14
The air chamber in the front fork 1, 0 and the hole 22 are communicated through the front fork 1, 0. The pressure sensor 34 is (Pf(6)
+ΔP (error)) is measured as a pressure measurement value of the live air chamber of the front fork 10 and inputted to the control device 40. The control device 40 determines the differential pressure between the measured air pressure value and the stored atmospheric pressure value. That is, the control device 40 performs the calculation i
Pf+ΔP)−(Pa+ΔP)l is performed to obtain the differential pressure Pf−Pa. In this measurement process, the differential pressure P
f-Pa does not include the zero point voltage in the semi-coated pressure sensor and the error ΔP due to external factors.
そして、この差圧は必要に応じて表示装置58で数字に
て表示されたり、予めi(,0M46に記憶されている
基準値と比較して高いか低いかをランプで表示されたり
する。Then, this differential pressure is displayed numerically on the display device 58 as necessary, or a lamp is displayed to indicate whether it is higher or lower than a reference value stored in advance in i(,0M46).
次に、フロントフォーク10の空気室の圧力調整につい
て説明する。圧力調整においては、誤差△Pを含寸ない
差圧P1’−Paを得るまでの手順は前記測定処理と同
様であるのでその説明は省略する。ft1ll ml装
@40は、P(−Paが得られると、(PI−Pa)が
予め設定されたフロントフォーク10の空気室Phi望
圧力Pxと等しいか否かを判別する。即ち、Pf−Pa
が空気室の設定圧力Pxと等しい場合には圧力調整は終
了し、Pf−Paが設定圧力Pxと等しくないときは次
に述べるように圧力調整処理きれる。Next, pressure adjustment of the air chamber of the front fork 10 will be explained. In the pressure adjustment, the procedure to obtain the differential pressure P1'-Pa that does not include the error ΔP is the same as the measurement process described above, so the explanation thereof will be omitted. When P(-Pa is obtained, the ft1ll ml installation @40 determines whether or not (PI-Pa) is equal to the preset desired pressure Px of the air chamber Phi of the front fork 10. That is, Pf-Pa
When Pf-Pa is equal to the set pressure Px of the air chamber, the pressure adjustment is completed, and when Pf-Pa is not equal to the set pressure Px, the pressure adjustment process is completed as described below.
先ず、(Pf−Pa ))Pxのときは、制御部40は
電磁弁18.32を作動させ、フロントフォーク10の
空気室を大気側と連通させて減圧する。First, when (Pf-Pa))Px, the control unit 40 operates the solenoid valves 18 and 32 to communicate the air chamber of the front fork 10 with the atmosphere to reduce the pressure.
Pf−Pa(Pxのときはモータ36を作動させ、ポン
プ28から空気を供給して空気室の圧力を高くする。こ
の圧力ffMf[処理は、Pf−PaとPxとが等しく
なるまで続けられる。When Pf-Pa (Px), the motor 36 is operated and air is supplied from the pump 28 to increase the pressure in the air chamber. This pressure ffMf process is continued until Pf-Pa and Px become equal.
第5図では、フロントフォーク10の望見圧力調整の場
合について説明したが、緩衝器12の空気圧力fA整の
場合も同様に誤差消去処理を行うことができる。In FIG. 5, the case of adjusting the visual pressure of the front fork 10 has been described, but error elimination processing can be similarly performed when the air pressure fA of the shock absorber 12 is adjusted.
また、前記実施例では、フロントフォークIO1緩衝器
12の空気圧力測定の場合について説明したが、一般の
車両のエンジン点火時期設定用照角機構を吸気管負圧に
よって制御する場合に於いて、吸気管負圧の測定に本実
施例を適用してもよい。In addition, in the above embodiment, the case of measuring the air pressure of the front fork IO1 shock absorber 12 was explained, but when controlling the glancing angle mechanism for setting the engine ignition timing of a general vehicle by the intake pipe negative pressure, This embodiment may also be applied to measurement of pipe negative pressure.
以」二説明したように、本発明に係る圧力センサザで測
定した大気圧値との差圧を求めて半導体圧カセンザの測
定値に含まれていた誤差を消去するので、圧カー血圧特
性の傾きのみが調整された半4体圧カセンサでも精度の
旨い測定が可能となシ、測定装置全体のコスト低減に大
きな効果があろっAs explained below, since the difference between the atmospheric pressure value measured by the pressure sensor according to the present invention and the atmospheric pressure value is calculated to eliminate the error included in the measured value of the semiconductor pressure sensor, the slope of the pressure curve blood pressure characteristic is It is possible to measure with high accuracy even with a semi-quad body pressure sensor that is only adjusted, which has a great effect on reducing the cost of the entire measuring device.
第1図は牛導体圧カセ/すの圧力−電圧特性線図、第2
図は本発明に係る実施例が適用される自動2輪車の概略
形状を示す側面図、第3図は実施例で用いられる配管図
、第4図は実施例で用いられる制御部のブロック図、第
5図は実施例の測定処理並びに圧力A 藍処理を示すフ
ローチャート図である。
10・・フロントフォーク、12・・・緩衝器、14.
16,22.30・・・肯、
18.20.32・・・電磁弁、
34・・・半導体圧力センサ、40・・・制御装置。
代理人 弁理士 松 浦 憲 三Figure 1 is a pressure-voltage characteristic diagram of the cow conductor pressure cassette/su
The figure is a side view showing the general shape of a two-wheeled motor vehicle to which an embodiment of the present invention is applied, FIG. 3 is a piping diagram used in the embodiment, and FIG. 4 is a block diagram of a control unit used in the embodiment. , FIG. 5 is a flowchart showing the measurement process and the pressure A indigo process in the example. 10...Front fork, 12...Buffer, 14.
16,22.30...affirmation, 18.20.32...electromagnetic valve, 34...semiconductor pressure sensor, 40...control device. Agent Patent Attorney Kenzo Matsuura
Claims (1)
に設けられた通路開閉用電磁弁と、圧力センサの取付室
と大気側とを連通ずる通路に設けられた大気側開閉用電
磁弁と、前記通路開閉用電磁弁と大気側開閉用電磁弁と
の作動を制御する制御装置と1を有し、前記制御装置は
半導体圧力セ/すで測定した大気圧値を記憶すると共に
半導体圧力センサで測定した被測定部の圧力値と記憶し
ていた大気圧値との差圧値を演算して求めることを特徴
とする半導体圧力センサの誤差補正装置。A solenoid valve for opening/closing a passage provided in a passage communicating between the part to be measured and the mounting chamber of the semiconductor pressure sensor, and a solenoid valve for opening/closing the atmosphere side provided in a passage communicating the mounting chamber of the pressure sensor and the atmosphere side. , a control device for controlling the operation of the passage opening/closing solenoid valve and the atmospheric side opening/closing solenoid valve; 1. An error correction device for a semiconductor pressure sensor, characterized in that the device calculates a differential pressure value between a pressure value of a part to be measured and a stored atmospheric pressure value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18033882A JPS5968635A (en) | 1982-10-14 | 1982-10-14 | Error correcting device of semiconductor pressure sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18033882A JPS5968635A (en) | 1982-10-14 | 1982-10-14 | Error correcting device of semiconductor pressure sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5968635A true JPS5968635A (en) | 1984-04-18 |
JPH0459574B2 JPH0459574B2 (en) | 1992-09-22 |
Family
ID=16081469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18033882A Granted JPS5968635A (en) | 1982-10-14 | 1982-10-14 | Error correcting device of semiconductor pressure sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5968635A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5338022A (en) * | 1976-09-20 | 1978-04-07 | Honda Motor Co Ltd | Hydraulic suspension for vehicle |
JPS54151078A (en) * | 1978-05-19 | 1979-11-27 | Toshiba Corp | Automatic calibrating device of pressure |
JPS5651050U (en) * | 1979-09-27 | 1981-05-07 | ||
JPS56146412A (en) * | 1980-04-10 | 1981-11-13 | Showa Mfg Co Ltd | Two-wheeled vehicle height adjusting device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5689447A (en) * | 1979-12-13 | 1981-07-20 | Res Dev Corp Of Japan | Manufacturing method of metallic short fiber |
-
1982
- 1982-10-14 JP JP18033882A patent/JPS5968635A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5338022A (en) * | 1976-09-20 | 1978-04-07 | Honda Motor Co Ltd | Hydraulic suspension for vehicle |
JPS54151078A (en) * | 1978-05-19 | 1979-11-27 | Toshiba Corp | Automatic calibrating device of pressure |
JPS5651050U (en) * | 1979-09-27 | 1981-05-07 | ||
JPS56146412A (en) * | 1980-04-10 | 1981-11-13 | Showa Mfg Co Ltd | Two-wheeled vehicle height adjusting device |
Also Published As
Publication number | Publication date |
---|---|
JPH0459574B2 (en) | 1992-09-22 |
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