JPS61243312A - Measurement of area - Google Patents
Measurement of areaInfo
- Publication number
- JPS61243312A JPS61243312A JP8452085A JP8452085A JPS61243312A JP S61243312 A JPS61243312 A JP S61243312A JP 8452085 A JP8452085 A JP 8452085A JP 8452085 A JP8452085 A JP 8452085A JP S61243312 A JPS61243312 A JP S61243312A
- Authority
- JP
- Japan
- Prior art keywords
- area
- weight
- per
- measured
- scale factor
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/26—Measuring arrangements characterised by the use of mechanical techniques for measuring areas, e.g. planimeters
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、土地設計図や航空写真等の平面上に表わされ
た閉ループ内の面積をきわめて簡単に測定できるように
した面積の測定方法に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention provides an area measurement method that allows the area within a closed loop expressed on a flat surface such as a land blueprint or an aerial photograph to be extremely easily measured. It is related to.
（従来の技術）
従来、平面上に表わされた閉ループ内の面積を測定する
測定器として、プラニメーター等が知られており、又、
平面上にドツトチャートと言われる面積計数用透明フィ
ルムを重ね合せ、前記平面上の面積を求める部分をダー
マトグラフ等によってなぞり、ドツトチャートの平面に
閉ループを記入し、該閉ルーズに囲まれたドツトの数を
数えることによって該閉ループ内の面積を求めるように
した。いわゆるドツトチャート方式や、ミニコンを使用
し、読取りペンの軌跡を計算することによって、該軌跡
内の面積を測定する装置がある。(Prior Art) Conventionally, planimeters and the like have been known as measuring instruments for measuring the area within a closed loop expressed on a plane.
Lay a transparent film for area counting called a dot chart on a flat surface, trace the area on the flat surface with a dermatograph, etc., draw a closed loop on the flat surface of the dot chart, and trace the dots surrounded by the closed loop. The area within the closed loop is determined by counting the number of . There are devices that use a so-called dot chart method or a minicomputer to calculate the trajectory of a reading pen and measure the area within the trajectory.
（発明が解決しようとする問題点）
しかしながら、前記プラニメーターによるものは、該プ
ラニメーターは極右が固定されているため、装置が該極
右の周囲を廻らなければならないため、測定範囲が小範
囲に限られる問題があり、又ドツトチャート式によるも
のは、すべて人手によって行われるため、大変に時間が
掛るだけではなく、誤計算を生じ易い、したかって、該
ドツトチャート式によるものは、膨大な時間点人手を要
し、測定者自身の疲労も著、 ・−
しいという問題がある。又、ミニコンによるものは、前
記ブラニメーターによるものに比べ、相当広範囲に亘っ
て測定できるようにすることが可能であるが、非常に高
価なものになるという問題があった。(Problems to be Solved by the Invention) However, with the planimeter described above, the far right side of the planimeter is fixed, and the device must go around the far right side, so the measurement range is limited to a small range. However, since the dot chart method is all done manually, it not only takes a lot of time but also tends to cause miscalculations. There is a problem in that it requires a lot of time, and the measurement person himself/herself becomes very fatigued. Furthermore, although it is possible to measure over a considerably wider range using a minicomputer than with the branimeter, there is a problem in that it is very expensive.
そこで本発明は、前述の問題点に鑑みてなされたもので
あって、きわめて簡単に測定することができ、しかも、
安価でかつ正確な測定値を得ることができる測定方法を
提供することを目的とするものである。Therefore, the present invention has been made in view of the above-mentioned problems, and can be measured very easily.
The object of the present invention is to provide a measurement method that is inexpensive and can obtain accurate measurement values.
（問題点を解決するための手段）
そのために本発明では、土地設計図、航空写真等平面上
に表わされた図形を、ｌＩＴ＋′当りの重さを所定の重
量に設定された基板上に転写し、該転写された図形の外
周線に沿って該基板を切断して図形部分を取外し、然る
後、該図形部分の重量を計測し、該重量をｌｒｎ’当り
ＩＫｇとなるように換算し、それに当該図形の縮尺率を
掛けることによって閉ループ内の面積を算出するように
したものである。(Means for Solving the Problems) For this purpose, in the present invention, figures represented on a plane such as land blueprints and aerial photographs are printed on a substrate whose weight per lIT+' is set to a predetermined weight. After transferring, cut the substrate along the outer periphery of the transferred figure to remove the figure part, then measure the weight of the figure part, and convert the weight to IKg per lrn'. Then, the area within the closed loop is calculated by multiplying it by the scale factor of the figure.
すなわち、本発明は１面積を重量に置換えて測定するよ
うにしたものである。That is, in the present invention, one area is replaced with weight for measurement.
（実施例）
以下２本発明による面積の測定方法の一例を図示せる実
施例に随って説明する。(Example) An example of the area measuring method according to the present invention will be described below with reference to an illustrative example.
ａは土地面積を重量によって測定する基板であって、該
基板ａは１ｍ″当りの重量がＩＫｇになるように設定さ
れている。A is a board for measuring land area by weight, and the board a is set so that the weight per 1 m is I kg.
尚、前記基板ａは木板や硬質の樹脂材等切断可能な材質
によって形成することが可能であるが、気温や湿度の変
化によって変形したり重量変化がないような材質を選定
することによって、より正確な測定ができる。The substrate a can be made of a material that can be cut, such as a wooden board or a hard resin material, but it can be made more easily by selecting a material that does not deform or change in weight due to changes in temperature or humidity. Accurate measurements can be made.
前記基板ａの上面１に予め１／１０００で実測された土
地の図形２が画かれた図面すを密着させ、該図形２を前
記上面ｌに転写させる０次に、該基板ａの上面に転写さ
れた図形２′の外周線（ループ線）３に沿って糸ノコ等
で切断し１図形２′部分を取外す、然る後、取外した図
形２′部分の重量を計測する。この時該重量が例えば５
２５ｇであったとすると、それに前記図形２の縮尺率子
を掛けることによって面積が求められる。すなわち、５
２５ｇＸ １０００−５２５０００ｇ ＝ ５２５Ｋ
ｇであり、これを面積に置換えることによって該閉ルー
プ内の面積が５２５コであることが判る。A drawing board on which a land figure 2 measured at 1/1000 in advance is drawn is brought into close contact with the upper surface 1 of the substrate a, and the figure 2 is transferred onto the upper surface l.Next, the figure 2 is transferred onto the upper surface of the substrate a. The figure 2' is cut along the outer circumferential line (loop line) 3 with a thread saw or the like, and the figure 2' portion is removed.Then, the weight of the removed figure 2' is measured. At this time, the weight is, for example, 5
Assuming that it is 25 g, the area can be found by multiplying it by the scale factor of the figure 2. That is, 5
25gX 1000-525000g = 525K
g, and by replacing this with area, it can be seen that the area within the closed loop is 525.
尚、前述の実施例では基板ａの１ｍ’当りの重量をＩＫ
ｇとしたが、これを５００ｇとした場合には、計測した
図形２′部分の重量を２倍にし、又、２５０ｇとした場
合には、計測した図形２′部分の重量を４倍にして１ｋ
ｇ当りの重量を出し、それに実測された図形の縮尺率を
掛ける。In addition, in the above-mentioned embodiment, the weight per 1 m' of the substrate a is IK
g, but if this is set to 500g, the weight of the measured figure 2' part is doubled, and if it is set to 250g, the weight of the measured figure 2' part is quadrupled to 1k.
Calculate the weight per gram and multiply it by the scale factor of the actual figure.
（発明の効果）
以上述べたように本発明によれば面積を重量に置換えて
測定するという従来の面積測定の常識を破った画期的な
方法によって面積を測定するようにしたので、安価で、
しかもきわめて簡単に、かう、正確に面積を測定するこ
とができぁ。(Effects of the Invention) As described above, according to the present invention, area is measured using an innovative method that breaks the conventional common sense of measuring area by replacing area with weight. ,
Moreover, it is extremely easy to measure the area accurately.
又、本発明によれば、図形部分の重量に実測された図形
の縮尺率を掛けるだけでよいので、縮尺率の大きな航空
写真による拡大な土地の面端等任意の縮尺された面積を
測定することができる。Furthermore, according to the present invention, it is only necessary to multiply the weight of the figure part by the scale rate of the actually measured figure, so it is possible to measure any scaled area, such as the edge of an enlarged piece of land based on an aerial photograph with a large scale rate. be able to.
第１図は基板の斜視図、第２図は切断されて取外された
図形部分の斜視図、第３図は土地図面の斜視図である。
ａは基板、ｂは図面、２．２′は図形、３は外周線。FIG. 1 is a perspective view of the board, FIG. 2 is a perspective view of a cut and removed graphic part, and FIG. 3 is a perspective view of a land plan. a is the board, b is the drawing, 2.2' is the figure, and 3 is the outer circumferential line.
Claims (1)
ｍ＾２当りの重さを所定の重量に設定された基板上に転
写し、該転写された図形の外周線に沿って該基板を切断
して図形部分を取外し、然る後、該図形部分の重量を計
測し、該重量を１ｍ＾２当り１Ｋｇとなるように換算し
、それに当該図形の縮尺率を掛けることによって、閉ル
ープ内の面積を算出するようにしたことを特徴とする面
積の測定方法。Figures represented on a plane such as land blueprints and aerial photographs are
The weight per m^2 is transferred onto a substrate set to a predetermined weight, the substrate is cut along the outer periphery of the transferred figure to remove the figure part, and then the figure part is removed. An area measurement method characterized in that the area within the closed loop is calculated by measuring the weight of the object, converting the weight to 1 kg per 1 m^2, and multiplying it by the scale factor of the figure. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8452085A JPS61243312A (en) | 1985-04-22 | 1985-04-22 | Measurement of area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8452085A JPS61243312A (en) | 1985-04-22 | 1985-04-22 | Measurement of area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61243312A true JPS61243312A (en) | 1986-10-29 |
Family
ID=13832907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8452085A Pending JPS61243312A (en) | 1985-04-22 | 1985-04-22 | Measurement of area |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61243312A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346680B1 (en) * | 1999-05-24 | 2002-02-12 | Toshiba Tec Kabushiki Kaisha | Weight and form sensing apparatus and a packaging machine using the same |
| CN102967250A (en) * | 2012-12-05 | 2013-03-13 | 广西壮族自治区林业科学研究院 | Land area measuring apparatus |
| CN105258668A (en) * | 2015-11-11 | 2016-01-20 | 三峡大学 | Rock shearing fracture surface boundary depicting device and method |
| CN116558473A (en) * | 2023-07-07 | 2023-08-08 | 西安绿环林业技术服务有限责任公司 | Vegetation investigation device for field ecological investigation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4982361A (en) * | 1972-12-11 | 1974-08-08 | ||
| JPS5040553A (en) * | 1974-08-21 | 1975-04-14 |
-
1985
- 1985-04-22 JP JP8452085A patent/JPS61243312A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4982361A (en) * | 1972-12-11 | 1974-08-08 | ||
| JPS5040553A (en) * | 1974-08-21 | 1975-04-14 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6346680B1 (en) * | 1999-05-24 | 2002-02-12 | Toshiba Tec Kabushiki Kaisha | Weight and form sensing apparatus and a packaging machine using the same |
| CN102967250A (en) * | 2012-12-05 | 2013-03-13 | 广西壮族自治区林业科学研究院 | Land area measuring apparatus |
| CN105258668A (en) * | 2015-11-11 | 2016-01-20 | 三峡大学 | Rock shearing fracture surface boundary depicting device and method |
| CN105258668B (en) * | 2015-11-11 | 2017-11-14 | 三峡大学 | A kind of rock shearing failure mechanics border delineation device and method |
| CN116558473A (en) * | 2023-07-07 | 2023-08-08 | 西安绿环林业技术服务有限责任公司 | Vegetation investigation device for field ecological investigation |
| CN116558473B (en) * | 2023-07-07 | 2023-09-26 | 西安绿环林业技术服务有限责任公司 | Vegetation investigation device for field ecological investigation |
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