JPH032823Y2 - - Google Patents
Info
- Publication number
- JPH032823Y2 JPH032823Y2 JP8388083U JP8388083U JPH032823Y2 JP H032823 Y2 JPH032823 Y2 JP H032823Y2 JP 8388083 U JP8388083 U JP 8388083U JP 8388083 U JP8388083 U JP 8388083U JP H032823 Y2 JPH032823 Y2 JP H032823Y2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- spring
- illuminance
- measured
- change
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Description
【考案の詳細な説明】
本考案は発条の伸縮を利用して測定対象物の重
量を検出する装置に関するものである。[Detailed Description of the Invention] The present invention relates to a device that detects the weight of an object to be measured by utilizing the expansion and contraction of a spring.
従来、この種の重量検出装置には、一般に、第
１図に示すような、発条秤が使用されている。発
条秤は、第１図に示すように、蔓巻発条１と、蔓
巻発条１の変化を指針で読取るための目盛３等か
ら構成されている。発条秤は、価格が安いという
特長を有しているものの、検出した測定対象物の
重量の変化をフイードバツク制御等の自動制御用
信号に用いる場合、蔓巻発条１の伸びの変化をど
のように電気信号に変換したら良いかという問題
がある。また、蔓巻発条１の伸びの変化を直接目
盛３を用いて目視で判読するので誤差が生じ易
く、測定対象物の重量の微少変化による蔓巻発条
１の伸びの微少変化を測定することが、非常に困
難であるという欠点があつた。 Conventionally, this type of weight detection device generally uses a spring scale as shown in FIG. As shown in FIG. 1, the spring scale includes a coil spring 1 and a scale 3 for reading changes in the coil spring 1 using a pointer. Spring scales have the advantage of being cheap, but when using detected changes in the weight of the object to be measured as signals for automatic control such as feedback control, how do you measure changes in the elongation of the coiled spring 1? The question is whether it is better to convert it into an electrical signal. Furthermore, since the change in the elongation of the tendril spring 1 is directly read visually using the scale 3, errors are likely to occur, and it is difficult to measure minute changes in the elongation of the tendril spring 1 due to minute changes in the weight of the object to be measured. The disadvantage was that it was extremely difficult.
本考案は、上記の欠点を解決するために成され
たもので、その目的とするところは、発条の伸び
の微少変化を判読できる重量検出装置を提供する
ことにある。 The present invention has been made to solve the above-mentioned drawbacks, and its purpose is to provide a weight detection device that can read minute changes in the elongation of a spring.
本考案の他の目的は、測定対象物の重量の変化
を電気信号に容易に変換できる重量検出装置を提
供することにある。 Another object of the present invention is to provide a weight detection device that can easily convert changes in the weight of an object to be measured into electrical signals.
本考案によれば、発条の伸縮を利用して測定対
象物の重量を検出する装置において、前記発条に
光を照射する手段と、前記発条を介して前記照射
手段と対向して設けられ、前記照射手段から照射
された光のうち前記発条の隙間から漏洩してきた
光の照度を測定する手段とを有し、この照度測定
手段で測定された照度の変化量から前記測定対象
物の重量の変化を検出するようにしたことを特徴
とする重量検出装置が得られる。 According to the present invention, in a device for detecting the weight of an object to be measured by utilizing the expansion and contraction of a spring, there is provided a means for irradiating light onto the spring, and a means provided opposite to the irradiation means via the spring; means for measuring the illuminance of the light leaked from the gaps between the springs among the light emitted from the irradiation means, and a change in the weight of the object to be measured based on the amount of change in illuminance measured by the illuminance measuring means. A weight detection device is obtained, which is characterized in that it detects.
以下本考案の実施例を図面を参照して詳細に説
明する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
第２図は、ブリツジマン法による単結晶製造に
おいて使用される本考案よる重量検出装置の一実
施例の構成を示した正面図であり、測定対象物の
重量の変化を敏感に検知し、異常を防止するため
に、単結晶製造装置に取り付けられるものであ
る。 FIG. 2 is a front view showing the configuration of an embodiment of the weight detection device according to the present invention used in single crystal production by the Bridgman method, which sensitively detects changes in the weight of the object to be measured and detects abnormalities. In order to prevent this, it is attached to the single crystal manufacturing equipment.
第２図において、１は蔓巻発条、４は蔓巻発条
１に光を照射するための光源、５は光源用のカバ
ー、６は蔓巻発条１に設けられた遮蔽板、７は蔓
巻発条１を介して光源４と対向して設けられ、光
源４によつて照射された光のうち遮蔽板６の隙間
から漏洩してきた光の照度を測定するための照度
測定器、８は照度測定器７で測定された照度の変
化量から測定対象物（図示せず）の重量の変化量
を測定するための照度−重量測定器を示してい
る。 In Fig. 2, 1 is a tendril spring, 4 is a light source for irradiating light to the tendril spring 1, 5 is a cover for the light source, 6 is a shielding plate provided on the tendril spring 1, and 7 is a tendril. An illuminance meter 8 is provided to face the light source 4 via the spring 1 and measures the illuminance of the light leaked from the gap between the shielding plates 6 among the light irradiated by the light source 4; This figure shows an illuminance-weight measuring device for measuring the amount of change in the weight of an object to be measured (not shown) from the amount of change in illuminance measured by the device 7.
第２図を参照すると、測定対象物の重量が変化
すると、蔓巻発条１に粗密の変化が生じる。その
とき、光源４から照射した光が遮蔽板６の隙間を
通つて漏洩する光の照度が変化するので、この照
度の変化を照度測定器７が測定することができ
る。照度−重量測定器８では、予め照度の変化量
と重量の変化量との対応関係を較正しておくこと
により、照度測定器７で測定された照度の変化量
から実際の測定対象物の重量の変化量を検知する
ことができる。 Referring to FIG. 2, when the weight of the object to be measured changes, the density of the helical spring 1 changes. At this time, the illuminance of the light emitted from the light source 4 leaking through the gap in the shielding plate 6 changes, so that the illuminance measuring device 7 can measure this change in illuminance. The illuminance-weight measuring device 8 calculates the actual weight of the object to be measured from the amount of change in illumination measured by the illuminance measuring device 7 by calibrating the correspondence between the amount of change in illuminance and the amount of change in weight in advance. The amount of change in can be detected.
以上の説明で明らかなように、本考案による
と、発条の伸縮を利用して、測定対象物の重量の
微少変化を容易に検出することが可能となる。ま
た、光の照度を電気信号に変換することは容易に
できるので、自動制御用にも応用できるという効
果がある。 As is clear from the above description, according to the present invention, it is possible to easily detect minute changes in the weight of the object to be measured by utilizing the expansion and contraction of the springs. Furthermore, since it is easy to convert the illuminance of light into an electrical signal, it has the advantage that it can also be applied to automatic control.
第１図は従来の重量検出装置の構成を示した正
面図、第２図は本発明による重量検出装置の一実
施例の構成を示した正面図である。
１……蔓巻発条、４……光源、５……カバー、
６……遮蔽板、７……照度測定器、８……照度−
重量測定器。
FIG. 1 is a front view showing the structure of a conventional weight detecting device, and FIG. 2 is a front view showing the structure of an embodiment of the weight detecting device according to the present invention. 1... Vine spring, 4... Light source, 5... Cover,
6... Shielding plate, 7... Illuminance measuring device, 8... Illuminance -
Weight measuring device.
Claims (1)
する装置において、前記発条に光を照射する手段
と、前記発条を介して前記照射手段と対向して設
けられ、前記照射手段から照射された光のうち前
記発条の隙間から漏洩してきた光の照度を測定す
る手段とを有し、該照度測定手段で測定された照
度の変化量から前記測定対象物の重量の変化量を
検出するようにしたことを特徴とする重量検出装
置。 A device for detecting the weight of an object to be measured using the expansion and contraction of a spring, comprising: a means for irradiating light onto the spring, and a means provided opposite to the irradiation means via the spring, and irradiated from the irradiation means. means for measuring the illuminance of the light leaking from the gaps between the light beams, and detecting the amount of change in the weight of the object to be measured from the amount of change in the illuminance measured by the illuminance measuring means. A weight detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8388083U JPS59189122U (en) | 1983-06-03 | 1983-06-03 | weight detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8388083U JPS59189122U (en) | 1983-06-03 | 1983-06-03 | weight detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59189122U JPS59189122U (en) | 1984-12-15 |
| JPH032823Y2 true JPH032823Y2 (en) | 1991-01-25 |
Family
ID=30213833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8388083U Granted JPS59189122U (en) | 1983-06-03 | 1983-06-03 | weight detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59189122U (en) |
-
1983
- 1983-06-03 JP JP8388083U patent/JPS59189122U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59189122U (en) | 1984-12-15 |
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