KR20170129577A - Before the impact test dummy head, dropping point check system - Google Patents

Before the impact test dummy head, dropping point check system Download PDF

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Publication number
KR20170129577A
KR20170129577A KR1020160060470A KR20160060470A KR20170129577A KR 20170129577 A KR20170129577 A KR 20170129577A KR 1020160060470 A KR1020160060470 A KR 1020160060470A KR 20160060470 A KR20160060470 A KR 20160060470A KR 20170129577 A KR20170129577 A KR 20170129577A
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KR
South Korea
Prior art keywords
dummy head
drop
height
measurement
jig
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KR1020160060470A
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Korean (ko)
Inventor
양동육
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(주)로거테크
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Priority to KR1020160060470A priority Critical patent/KR20170129577A/en
Publication of KR20170129577A publication Critical patent/KR20170129577A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/08—Shock-testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • G01N2201/06113—Coherent sources; lasers

Abstract

The present invention relates to an invention which allows a measurer to perform an accurate test by keeping a drop position and height of a dummy head constant. Currently, employed is a method of dropping a dummy head using a support or a specific fixing device of the dummy head, or dropping the dummy head after a measurer holds the dummy head by hand. In a case where the support or the specific fixing device is being used, there are difficulties for a measurer to hang around a measuring site for measurement because it is difficult to carry the support or the fixing device. In addition, when held by the measurers hand, it is difficult to match the same drop position and height at each drop. As such, the present invention is able to improve a precision of measurement of the user through a method of displaying the drop position, and making the drop heights equal by attaching a laser sensor to the inside of the dummy head and to a specific jig.

Description

더미헤드 충격 시험 전 낙하높이 및 측정지점 확인 장치{Before the impact test dummy head, dropping point check system}[0001] The present invention relates to a dummy head and a dropping point check system,

본 발명은 더미헤드의 낙하 전에 높이와 낙하지점을 측정하기 위한 방법에 관한 것이다. 더미헤드가 지면에 닿았을 때에 발생하는 충격량은 높이와 밀접한 관련이 있다. 더미헤드의 낙하 높이가 매번 달라질 경우 충격량에 대한 값을 신뢰 할 수 없다. 또한 낙하지점을 미리 앎으로서 정확한 측정 데이터를 얻을 수 있다. 본 발명을 통하여 측정 데이터에 대한 신뢰도를 높일 수 있다.The present invention relates to a method for measuring a height and a drop point of a dummy head before dropping. The amount of impact generated when the dummy head touches the ground is closely related to the height. If the drop height of the dummy head is changed every time, the value for the impact amount can not be relied upon. Accurate measurement data can be obtained by knowing the dropping point in advance. The reliability of the measurement data can be increased through the present invention.

일반적으로 더미헤드를 통한 충격량을 측정 할 때에는 더미헤드를 거치시키는 거치대를 항상 가지고 다녀야 한다. 낮은 높이에서도, 간단한 실험에서도 항상 거치대가 필요하여 불편함이 많다. 이 문제의 해결 방법으로 레이저를 통한 거리를 측정하는 방법을 택했다.Generally, when measuring the amount of impact through the dummy head, always carry the dummy head rest. Even at low altitudes, simple experiments always require a cradle, which is uncomfortable. As a solution to this problem, we chose to measure the distance through the laser.

두 대의 레이저가 사용 되는데 하나는 더미헤드에 장착이 되며, 또 하나는 지그에 장착이 된다. 더미헤드에 장착되어 있는 레이저가 수직으로 지면을 향해 포인트를 잡으면, 지그에 장착되어 있는 레이저의 각도를 조절함으로 높이를 측정하는 방법이다. 지그와 더미헤드가 지면과 수평하게 일정 거리가 유지되고 측정 할 높이가 정해지면 지그에 장착되어 있는 레이저의 각도를 삼각함수를 통해 구할 수 있다. 따라서 더미헤드가 측정하고자 하는 높이에 맞지 않으면 지면에는 두 개의 레이저 포인트가 생길 것이고, 측정하고자 하는 높이와 맞으면 한 개의 레이저 포인트로 보이게 되어 정확한 높이와 낙하지점을 알 수 있게 된다.Two lasers are used, one mounted on the dummy head and the other mounted on the jig. When the laser mounted on the dummy head vertically points to the ground, the height is measured by adjusting the angle of the laser mounted on the jig. When the jig and the dummy head are kept at a certain distance from the ground and the height to be measured is determined, the angle of the laser mounted on the jig can be obtained through the trigonometric function. Therefore, if the dummy head does not match the height you want to measure, you will have two laser points on the ground, and if you hit the height you want, you will see one laser point, so you can see the exact height and drop point.

현재는 측정자가 지지대나 특정 고정 장치가 없는 경우에는 손으로 들고 떨어뜨리는 형태로 시험을 하고 있다.(도 1 참조) 하지만 이러한 형태의 측정은 정확한 낙하지점을 예측할 수 없고 측정 지점에서 벗어날 확률이 있으며, 반복 측정시 측정 위치 및 낙하 높이가 동일하기가 어려워 정밀도가 떨어지는 현상이 발생하며 이것은 측정 저하로 이어진다. 본 발명에서는 이런 문제를 개선한다.At present, the test is carried out with the hand held and dropped in the absence of a support or a specific fixation device (see Figure 1). However, this type of measurement is not predictable and is likely to deviate from the measurement point , It is difficult for the measurement position and the drop height to be the same at the time of repetitive measurement, resulting in a phenomenon in which the accuracy is lowered, which leads to measurement deterioration. The present invention improves this problem.

더미헤드의 내부에 레이저 센서가 달려 있어 낙하위치 지점을 확보할 수 있다.(도 3 참조) 더미헤드를 떨어뜨리기 전에 레이저 센서가 달린 지그를 사용한다.(도 4 참조) 이 지그와 더미헤드에 달린 레이저 센서가 낙하지점을 지표에 표시해주어 낙하의 정확한 위치를 확보할 수 있다.(도 2 참조) 또한, 휴대가 가능하므로 지지대나 특정 고정 장치를 사용할 필요가 없다.(See FIG. 3). Before dropping the dummy head, a jig with a laser sensor is used (see FIG. 4). The jig and the dummy head The laser sensor with the attached laser marks the drop point on the surface to ensure the exact position of the drop (see Figure 2). It is also portable, so there is no need to use a support or a specific fixture.

레이저 위치 센서가 달린 지그로 인해서 다음과 같은 효과를 가져올 수 있다.A jig with a laser position sensor can have the following effects:

- 낙하지점의 정확한 위치 파악- Identify the exact location of the drop point.

- 일정한 높이에서 낙하가 가능- Falling at a constant height

- 반복 측정 시 낙하지점의 파악으로 인한 측정값의 정밀도 보완- Accuracy of measured values due to identification of falling points in repeated measurement

도 1은 현재 더미헤드의 측정 방법을 나타낸다.
도 2는 개선된 낙하 위치 지점과 높이 추적이 가능한 더미헤드의 측정 방법을 나타낸다.
도 3은 개선된 레이저 센서가 부착된 더미헤드를 보여준다.
도 4는 레이저 센서가 부착된 더미헤드의 지그를 보여준다.
도 5는 더미헤드와 지그가 부착된 상태를 보여준다.FIG. 1 shows a current dummy head measurement method.
Figure 2 shows a method of measuring an improved drop position point and a height trackable dummy head.
Figure 3 shows a dummy head with an improved laser sensor attached.
4 shows a jig of a dummy head with a laser sensor attached thereto.
5 shows a state in which the dummy head and the jig are attached.

도 2와 같이, 레이저 센서가 달린 지그를 더미헤드의 핸들 부분에 부착시킨다. 또한 도 3처럼 더미헤드 내부에 레이저 센서를 부착시킨다. 사용자가 더미헤드의 지그를 잡고 두 레이저의 표식이 만나는 지점까지 올린다. 두 표식이 만나는 지점의 높이가 되면 측정을 시작할 수 있다.As shown in FIG. 2, the jig with the laser sensor is attached to the handle portion of the dummy head. Also, a laser sensor is attached to the inside of the dummy head as shown in FIG. The user holds the jig of the dummy head and raises it to the point where the markings of the two lasers meet. The measurement can be started when the height of the point where the two markings meet.

001: 더미헤드
002: 지그
003: 레이저 센서 (더미헤드 부)
004: 레이저 센서 (지그 부)
005: 핸들 (더미헤드 부)001: Dummy head
002: Jig
003: Laser sensor (dummy head part)
004: Laser sensor (jig)
005: handle (dummy head part)

Claims (2)

더미헤드의 내부에 레이저 센서를 삽입하여 낙하위치 표식이 되도록 함. (도 3 참조)Insert a laser sensor inside the dummy head so that it becomes a drop position mark. (See Fig. 3) 더미헤드의 핸들 부분에 레이저 센서가 달린 지그를 부착하여 낙하위치 및 일정 높이가 되도록 함. (도 2 참조)Attach a jig with a laser sensor to the handle part of the dummy head so that it is at the drop position and a certain height. (See Fig. 2)
KR1020160060470A 2016-05-17 2016-05-17 Before the impact test dummy head, dropping point check system KR20170129577A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019132240A1 (en) * 2017-12-26 2019-07-04 한국해양과학기술원 Underwater helmet impact tester
CN114034456A (en) * 2021-11-03 2022-02-11 辽宁通用航空研究院 Automatic control device and method for drop test

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019132240A1 (en) * 2017-12-26 2019-07-04 한국해양과학기술원 Underwater helmet impact tester
CN114034456A (en) * 2021-11-03 2022-02-11 辽宁通用航空研究院 Automatic control device and method for drop test
CN114034456B (en) * 2021-11-03 2024-03-01 辽宁通用航空研究院 Automatic control device and method for drop test

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