KR100453677B1 - An angle meter which is used wireless transmission-reception and method thereof - Google Patents

An angle meter which is used wireless transmission-reception and method thereof Download PDF

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KR100453677B1
KR100453677B1 KR10-2000-0079690A KR20000079690A KR100453677B1 KR 100453677 B1 KR100453677 B1 KR 100453677B1 KR 20000079690 A KR20000079690 A KR 20000079690A KR 100453677 B1 KR100453677 B1 KR 100453677B1
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data
angle
sensor
signal
measuring device
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KR10-2000-0079690A
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KR20020050528A (en
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한우선
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한우선
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/22Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2210/00Aspects not specifically covered by any group under G01B, e.g. of wheel alignment, caliper-like sensors
    • G01B2210/58Wireless transmission of information between a sensor or probe and a control or evaluation unit

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

본 발명은 수직을 요하는 작업을 함에 있어서 작업자가 측정된 각도를 육안으로 직접 보기 어려운 경우 측정센서에서 측정된 결과를 작업자가 위치하는 곳으로 무선 송신하고 작업자는 수신기로 송신된 측정데이터를 확인할 수 있게 하는 각도측정장치에 관한 것으로,In the present invention, when the worker is difficult to see the measured angle directly with the naked eye in the work requiring the vertical, wirelessly transmits the result measured by the measuring sensor to the place where the worker is located and the operator can check the measured data transmitted to the receiver. To an angle measuring device

각도측정기(1)의 각도센서부(2)에서는 측정물에 부착된 센서의 기울기에 따라 출력전압레벨(Analog량)을 다르게 출력하여 센서신호처리부(MICOM)(3)에 보내고 센서신호처리부(MICOM)(3)에서는 각도센서부(2)에서 보낸 아날로그 신호를 디지탈신호로 변환하여 데이터 무선송신부(4)로 보내며 데이터 무선송신부(4)에서는 이 디지털 신호를 작업자가 위치한 각도표시기(5)에 보내면, 각도표시기(5)의 데이터 무선수신부(6)에서는 송신된 측정터이터를 수신하고 데이터 연산처리부(7)로 보내며 데이터 연산처리부(7)에서는 수신된 데이타 신호를 데이터 표시부(8)에 보내고 데이터 표시부(8)에서는 이 데이터 신호를 화면에 표시하여 작업자가 측정각도를 확인할 수 있게 하는 것을 특징으로 한다.The angle sensor part 2 of the angle measuring device 1 outputs an output voltage level (analog amount) differently according to the inclination of the sensor attached to the measurement object, and sends it to the sensor signal processor MICOM 3 and sends the sensor signal processor MICOM. In (3), the analog signal sent from the angle sensor unit 2 is converted into a digital signal and sent to the data radio transmitter 4, and the data radio transmitter 4 sends the digital signal to the angle indicator 5 where the worker is located. , The data radio receiver 6 of the angle indicator 5 receives the transmitted measurement data and sends it to the data calculation processor 7, and the data calculation processor 7 sends the received data signal to the data display 8. The display unit 8 is characterized by displaying the data signal on the screen so that the operator can check the measurement angle.

Description

무선 송수신을 이용한 각도 측정장치 및 그 방법{An angle meter which is used wireless transmission-reception and method thereof}An angle meter using wireless transmission and reception method and an method thereof {An angle meter which is used wireless transmission-reception and method

본 발명은 각도측정장치에 관한 것이다. 더욱 상세하게는 수직을 요하는 작업을 함에 있어서 작업자가 측정된 각도를 육안으로 직접 보기 어려운 경우 측정센서에서 측정된 결과를 작업자가 위치하는 곳으로 무선 송신하고 작업자는 수신기로송신된 측정데이터를 확인할 수 있게 하는 각도측정장치에 관한 것이다.The present invention relates to an angle measuring device. More specifically, in the case of the work that requires the vertical, when the operator cannot see the measured angle directly with the naked eye, the measured result is wirelessly transmitted to the place where the worker is located and the operator checks the measured data transmitted to the receiver. It relates to an angle measuring device that allows.

차수벽 설치공사, 심정(深井)굴착공사, 현장치기 말뚝(Cast in Place Pile)공사 등과 같이 땅속을 수직으로 깊이 파는 공사 또는 탑(Tower)이나 토목 건축공사와 같이 수직도를 항시 점검해야 할 경우에는 각도측정기를 밀폐된 곳이나 높은 굴착기, 탑, 시설물 등의 정상(頂上)에 부착하여야 하므로 측정자가 직접 각도측정기가 설치된 곳까지 접근하여 작업의 수직여부를 확인하기 어려운 실정이었다.If you need to check the verticality at all times, such as digging deep into the ground such as the water line wall installation work, deep excavation work, cast in place pile work, or tower or civil engineering work. Because the angle measuring device should be attached to the top of a closed place, high excavator, tower, facilities, etc., it was difficult for the measurer to approach the place where the angle measuring device was installed and to check the verticality of the work.

본 발명은 이러한 문제점을 해소하고자 하는 것으로 수직을 요하는 작업에 있어서 작업자가 접근하기 어려운 곳에 설치된 각도측정기까지 가지 않고도 편리하게 측정결과를 작업자가 위치하고 있는 곳에서 확인할 수 있게 하는데 목적이 있다.The present invention is to solve this problem is to make it possible to conveniently check the measurement results in the place where the operator is located without going to the angle measuring device installed in a place that is difficult for the operator in the work requiring the vertical.

이러한 목적을 달성하기 위하여 땅속이나 탑 또는 건축물 꼭대기 등 수직도를 측정하고자 하는 위치에 설치된 각도측정기의 각도센서부에서 측정된 각도측정신호를 작업자가 볼 수 있는 위치로 송신하고 송신된 데이터를 각도표시기로 작업자가 위치하는 곳에서 수신하여 볼 수 있도록 하는데 특징이 있다.In order to achieve this purpose, the angle measurement signal measured by the angle sensor unit of the angle measuring device installed in the ground, the tower or the top of the building to be measured vertically is transmitted to the position where the operator can see and the transmitted data is displayed on the angle indicator. It is characterized by receiving and viewing where the worker is located.

도 1은 본 발명의 흐름도1 is a flow chart of the present invention

도 2는 본 발명의 각도측정기 송신회로도Figure 2 is an angle measuring instrument transmission circuit diagram of the present invention

도 3은 본 발명의 각도측정기 수신회로도Figure 3 is an angle measuring circuit receiving circuit diagram of the present invention

<도면의 부호에 대한 상세한 설명><Detailed Description of Symbols in Drawings>

1 : 각도측정기 2 : 각도 센서부1: angle measuring instrument 2: angle sensor unit

3 : 센서 신호처리부(MICOM) 4 : 데이터 무선송신부3: sensor signal processor (MICOM) 4: data wireless transmitter

5 : 각도표시기 6 : 데이터 무선수신부5: angle indicator 6: data wireless receiver

7 : 데이터 연산처리부(MICOM)7: Data operation processing unit (MICOM)

8 : 데이터 표시부(Liquid-Crystal Display)8: Liquid-Crystal Display

본 발명은 토목공사, 건축공사 등의 수직도를 점검해야 하는 공사에 있어서, 각도측정기를 설치하는 곳이 높은 타워나 밀폐된 장소 또는 지하시설물 등 작업자가 접근하기 어려운 곳에 위치할 경우 각도측정기에 수직도 감지센서, 센서신호처리장치, 송신기를 부착하여 측정된 각도측정 테이터를 송신하면 작업자가 위치하고 있는 작업실, 조정실, 운전석 등에서 또는 작업자가 휴대하면서 볼 수 있도록 송신된 각도 측정 데이터 신호를 수신기로 받아 연산처리하여 데이터 표시부에서 센서로 측정한 각도를 표시하는 것이다.The present invention is vertical in the angle measuring device in the construction where the vertical angle of civil engineering, building construction, etc. should be checked, if the location where the angle measuring device is installed is located in a high tower or an enclosed place or an inaccessible place such as underground facilities. When the angle measurement data measured by attaching the degree sensor, the sensor signal processing device, and the transmitter is transmitted, the angle measurement data signal transmitted to the operator in the work room, the control room, the driver's seat, or the like for the operator to carry and receive is calculated by the receiver. Processing is then performed to display the angle measured by the sensor in the data display unit.

이를 도면에 의하여 설명하면 다음과 같다.This will be described with reference to the drawings.

각도측정기(1)는 도1에서와 같이 각도센서부(2), 센서 신호처리부 (MICOM)(3), 데이터 무선송신부(4)로 구성되어 있는데 작업자가 접근할 수 없는 각도측정시설물에 설치된 각도측정기(1)의 각도센서부(2)에서는 센서의 기울기에 따라 출력전압레벨(Analog량)을 다르게 출력하고, 센서 신호처리부(MICOM)(3)에서는 에이-디 컨버터(Analog-Digital Converter)에 의하여 아날로그(Analog) 신호를 증폭하고 디지털(Digtal) 신호로 변환하며, 데이터 무선송신부(4)에서는 이 디지털 신호를 작업자가 위치하는 곳에 있는 각도표시기(본체)(5)의 수신기로 송신한다. (송신기와 수신기의 거리는 100m가 적합하다.)The angle measuring device 1 is composed of an angle sensor unit 2, a sensor signal processing unit (MICOM) 3, and a data wireless transmitting unit 4 as shown in FIG. The angle sensor unit 2 of the measuring device 1 outputs an output voltage level (analog amount) differently according to the inclination of the sensor, and the sensor signal processing unit MICOM 3 outputs an analog-to-digital converter. By amplifying the analog signal and converting it into a digital signal, the data wireless transmitter 4 transmits the digital signal to the receiver of the angle indicator (body) 5 where the operator is located. (The distance between transmitter and receiver is 100m.)

각도표시기(5)는 데이터 무선수신부(6), 데이터 연산처리부(MICOM)(7), 데이터 표시부(Liquid-Crystal Display)(8)로 구성되어 있는데, 작업자가 위치하는 곳에 있는 각도표시기(5)의 데이터 무신수신부(6)에서는 각도측정기(1)의 데이터 무선송신부(4)에서 보내진 데이터를 수신하여 데이터 연산처리부(MICOM)(7)에 보내고 데이터 연산처리부(MICOM)(7)에서는 수신된 데이터를 데이터 표시부(LCD)(8)에 보내면 이 데이터를 작업자가 확인할 수 있도록 화면에 데이터 값을 표시한다.The angle indicator 5 is composed of a data radio receiver 6, a data operation processing unit (MICOM) 7, and a liquid-crystal display (8). The angle indicator (5) is located where a worker is located. The data reception unit 6 receives data sent from the data radio transmitter 4 of the angle measuring device 1 and sends the data to the data operation processing unit MICOM 7 and receives the data received from the data operation processing unit MICOM 7. Is sent to the data display (LCD) 8, the data value is displayed on the screen so that the operator can confirm this data.

또, 데이터 표시부(LCD)(8)에서는 전원을 넣을 때 화면에 안내메시지를 3초간 표시(회사로고, 사용법 등)하고 장치내부적으로 셀프테스트(SELF TEST)(DISPLAY부, 무선 데이타수신부 등)를 수행하며 각도측정기(1)에서 데이터 송신이 되지 않아 수신된 데이터가 없으면 부저음과 함께 신호가 없다는 안내메시지를 화면에서 표시한다. 한편, 셀프테스트에서 이상이 없으면 정상램프를 점등하고 각도측정기(1)에서 수신된 데이터가 설정된 최대값을 넘지 않으면 화면에 데이터로 표시한다. 수신된 데이터가 설정된 값을 넘으면 부저음과 함께 안내메시지를 화면에 표시한다.In addition, the data display (LCD) 8 displays a guidance message on the screen for three seconds when the power is turned on (company logo, usage, etc.), and executes a self test (SELF TEST) (display unit, wireless data receiver, etc.) inside the device. If the data is not transmitted from the angle measuring device 1 and there is no data received, a guide message indicating that there is no signal along with a buzzer sound is displayed on the screen. On the other hand, if there is no abnormality in the self test, the normal lamp is turned on, and if the data received from the angle measuring instrument 1 does not exceed the set maximum value, it is displayed as data on the screen. If the received data exceeds the set value, a guide message is displayed on the screen together with a buzzer sound.

본 발명의 각도측정장치의 작용을 회로에 의해 설명하면 다음과 같다.Referring to the operation of the angle measuring device of the present invention by the circuit as follows.

각도측정기(1)의 송신회로는 각도센서부(U1)(2), 센서신호처리부 (Microcomputer, MODEL No : 80C31(intel))(U2)(3), 데이터 무선송신부(U3)(4)로 구성되는데 각도센서부(U1)(2)에서는 측정각도(최대 ±45°)에 따라 신호가 출력되고 그 출력은 센서신호처리부(MICOM)(U2)(3)에서 연산을 한 후 데이터 무선송신부(U3)(4)로 데이터를 시리얼(SERIAL)로 전송하면 데이터 무선송신부(U3)(4)에서는 정해진 주파수(사용주파수: 445.7MHz, 데이터전송속도 2400bps)로 데이터를 전송한다. 전원부(U4)는 밧데리(BATTERY(9V))와 디씨(DC) 아덥터(DC 5V) 겸용이다.The transmission circuit of the angle measuring device 1 is connected to an angle sensor unit U1 (2), a sensor signal processing unit (Microcomputer, MODEL No: 80C31 (intel)) (U2) (3), and a data radio transmitter (U3) (4). In the angle sensor unit U1 (2), a signal is output according to the measurement angle (maximum ± 45 °), and the output is calculated by the sensor signal processing unit (MICOM) U2 (3) and then the data wireless transmitter unit ( When the data is transmitted to the serial by U3) (4), the data wireless transmitter U3 (4) transmits the data at a predetermined frequency (operating frequency: 445.7 MHz, data transmission speed 2400 bps). The power supply unit U4 serves as a battery (9V) and a DC adapter (DC 5V).

각도표시기(5)의 수신회로는 무선수신이 이루어지는 데이터 무선수신부 (U5)(6)에서 데이터를 검출하여 시이얼(SERIAl)로 데이터 연산처리부(MICOM) (U6)(7)에 전송하면 데이터 연산처리부(MICOM)(U6)(7)는 데이터를 연산처리하여 데이터표시부(LCD)(U7)(8)에 보내고 데이터표시부(LCD)(U7)(8)에서는 입력된 데이터에 따라 센서각도를 표시한다.The receiving circuit of the angle indicator 5 detects data from the data radio receiver U5 (6), which is wirelessly received, and transmits the data to the data computation processor MICOM U6 (7) by serial (SERIAl). The processing unit (MICOM) U6 (7) processes the data and sends it to the data display unit (LCD) U7 (8), and the data display unit (LCD) U7 (8) displays the sensor angle according to the input data. do.

전원부(U8)는 밧데리(BATTERY (9V))와 디씨(DC) 아덥터(DC 5V) 겸용이다.The power supply unit U8 is a battery (9V) and a DC (DC) adapter (DC 5V).

작업자가 접근하기 어려운 곳에 각도측정기를 부착하여 수직도를 측정하여야 할 경우 작업자는 각도측정기가 설치되어 있는 곳까지 가지 않고도 상황실, 조정실, 운전석 등에서 또는 휴대하면서 각도표시기로 측정데이타를 볼 수 있으며, 사용분야는 지중 차수벽공사 및 말뚝설치(CIP)공사 또는 지하시설물(기둥 등), 건설공사 시설물, 착정(깊는우물(深井) 굴착시) 공사, 타워 설치공사 등에서 본 발명의 각도측정장치를 편리하게 사용할 수 있다.If you need to measure the verticality by attaching an angle measuring instrument where it is difficult for the operator to access, you can view the measurement data with the angle indicator while in the situation room, control room, driver's seat, etc., without going to the place where the angle measuring instrument is installed. The field can be conveniently used for the angle measuring device of the present invention in underground water line wall construction and pile installation (CIP) construction or underground facilities (columns, etc.), construction facilities, drilling (during deep well excavation) construction, tower installation construction, etc. Can be.

Claims (2)

각도센서부와 센서신호처리부와 데이터 무선송신부로 된 각도측정기를 이용하여 각도센서부에서 측정된 각도의 데이터신호를 센서신호처리부에서 디지탈신호로 변환한 후 데이터 무선송신부에서 무선으로 송신하고, 데이터 무선수신부와 데이터 연산처리부와 데이터 표시부로 된 각도표시기를 이용하여 상기 무선으로 송신된 데이터신호를 데이터 무선수신부에서 수신하고 데이터 연산처리부에서 연산한 후 데이터 표시부에 표시하는 무선송수신을 이용한 각도측정방법에 있어서, 작업자가 접근하기 어려운 측정물에 각도측정기(1)를 부착하여 각도센서부(2)의 센서가 측정물의 기울기에 따라 출력전압레벨(아날로그 량)을 다르게 출력한 측정데이터신호를 각도표시기(5)로 무선송신하면, 작업자가 위치한 곳에 설치된 각도표시기(5)로 상기 송신된 데이터신호를 수신하여 측정각도를 확인할 수 있게 하는 것을 특징으로 하는 무선송수신을 이용한 각도측정방법.Using an angle measuring device composed of an angle sensor unit, a sensor signal processor, and a data wireless transmitter, the data signal of the angle measured by the angle sensor unit is converted into a digital signal by the sensor signal processor, and then wirelessly transmitted by the data wireless transmitter. In the angle measurement method using the wireless transmission and reception to receive the data signal transmitted wirelessly by the data wireless receiver using an angle indicator consisting of a receiver, a data operation processor and a data display unit, the data operation is calculated by the data operation processor and displayed on the data display unit. In addition, the angle measuring device 1 is attached to a workpiece that is hard to be accessed by the operator, and the sensor of the angle sensor unit 2 outputs a measurement data signal that outputs an output voltage level (analog amount) differently according to the inclination of the measuring object. Wireless transmission, the transmitted to the angle indicator (5) installed where the operator is located An angle measuring method using a wireless transmission and reception, characterized in that for receiving a data signal to determine the measurement angle. 각도센서부와 센서신호처리부와 데이터 무선송신부로 되어 각도를 측정하고 디지털 신호로 변환한 후 무선으로 송신하는 각도측정기와, 데이터 무선수신부와 데이터 연산처리부와 데이터 표시부로 되어 무선으로 송신된 신호를 수신하여 연산하고 화면에 표시하는 각도표시기로 된 무선송수신을 이용한 각도 측정장치에 있어서, 작업자가 접근하기 어려운 측정물에 부착하여 수직도를 측정하고 측정데이터를 작업자에게 송신하는 각도측정기(1)와, 송신된 데이터를 작업자가 위치하는 곳에서 수신하여 볼 수 있도록 하는 각도표시기(5)로 되어 있되, 상기 각도측정기(1)의 각도센서부(2)는 기울기에 따라 출력전압레벨을 다르게 출력하는 센서를 포함하는 것을 특징으로 하는 무선송수신을 이용한 각도 측정장치.The angle sensor unit, the sensor signal processing unit, and the data wireless transmitter are used to measure angles, convert them into digital signals, and transmit them wirelessly, and the data wireless receiver, data operation processor, and data display unit are used to receive signals transmitted wirelessly. In the angle measuring device using a wireless transmission and reception with an angle indicator to calculate and display on the screen, the angle measuring device (1) for attaching to a measurement object that is difficult to access the operator to measure the verticality and transmit the measurement data to the operator, It is an angle indicator (5) for receiving and viewing the transmitted data where the operator is located, the angle sensor unit 2 of the angle measuring device (1) is a sensor for outputting the output voltage level differently according to the slope Angle measuring apparatus using a wireless transmission and reception, characterized in that it comprises a.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190036276A (en) 2017-09-27 2019-04-04 주식회사 포스코 Apparatus for inserting of raw material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09229667A (en) * 1996-02-28 1997-09-05 Imeeji Joho Kagaku Kenkyusho Apparatus and method for measuring movement of rotary joint structure
KR19980044529A (en) * 1996-12-06 1998-09-05 서정욱 Antenna tilting and azimuth remote control device using wireless data communication in cellular network
KR19990080158A (en) * 1998-04-14 1999-11-05 노세룡 Automatic device for measuring tilt displacement using serial communication and its method
KR200230145Y1 (en) * 2000-12-21 2001-07-19 한우선 An angle meter which is used wireless transmission-reception

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09229667A (en) * 1996-02-28 1997-09-05 Imeeji Joho Kagaku Kenkyusho Apparatus and method for measuring movement of rotary joint structure
KR19980044529A (en) * 1996-12-06 1998-09-05 서정욱 Antenna tilting and azimuth remote control device using wireless data communication in cellular network
KR19990080158A (en) * 1998-04-14 1999-11-05 노세룡 Automatic device for measuring tilt displacement using serial communication and its method
KR200230145Y1 (en) * 2000-12-21 2001-07-19 한우선 An angle meter which is used wireless transmission-reception

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190036276A (en) 2017-09-27 2019-04-04 주식회사 포스코 Apparatus for inserting of raw material

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