WO2016060569A1 - Système et procédé de protection d'un mât déployable vis-à-vis de conditions anormales de fonctionnement - Google Patents

Système et procédé de protection d'un mât déployable vis-à-vis de conditions anormales de fonctionnement Download PDF

Info

Publication number
WO2016060569A1
WO2016060569A1 PCT/NO2015/050189 NO2015050189W WO2016060569A1 WO 2016060569 A1 WO2016060569 A1 WO 2016060569A1 NO 2015050189 W NO2015050189 W NO 2015050189W WO 2016060569 A1 WO2016060569 A1 WO 2016060569A1
Authority
WO
WIPO (PCT)
Prior art keywords
mast
upper portion
deflection
data
calculated
Prior art date
Application number
PCT/NO2015/050189
Other languages
English (en)
Inventor
Tor Mathias DYBVIK
Original Assignee
Comrod
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Comrod filed Critical Comrod
Publication of WO2016060569A1 publication Critical patent/WO2016060569A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
    • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna

Definitions

  • the invention relates to a system and method for protecting a mast.
  • masts can be used for establishing communication over a distance. Such masts can be exposed to severe weather conditions, such as extreme winds, which may lead to damage or even destruction of the mast and accompanying communication system. In case of deployable masts, this problem may be even more severe because of the inherent lower mechanical strength of such systems. Such mast might also be exposed to operator error, placing great stress on the mast and its associated components.
  • deployable masts comprise an upper portion extending upwardly relatively the ground, and a lower portion closer to the ground than the upper portion, wherein the upper portion and the lower portion form a telescopic element. Alternatively, there could be more than two elements forming the telescopic element, depending on the dynamic range of the deployable antenna, which is desired.
  • the purpose of the invention is to overcome or reduce at least one of the disadvantages of the prior art.
  • the purpose is achieved according to the invention by the features as disclosed in the description below and in the following patent claims.
  • a system for protecting a deployable mast from excessive wind conditions the mast having an upper portion extending upwardly relatively the ground, and a lower portion closer to the ground than the upper portion, wherein the mast is equipped with an actuator that, based on calculated instructions derived from mast conditions, is designed to alter the elevation above ground of the mast upper portion.
  • the invention provides a system to detect conditions that can cause damage to personnel and equipment and then aims to mitigate these conditions.
  • the deflection of a mast as well as the masts static lean angle are detected, and the raising of the mast is prevented when these parameters exceed specified criteria. Additionally the mast may be lowered until these parameters are within the specified criteria.
  • the actuator may be used to alter the elevation of the mast for achieving safe operation of the mast.
  • the calculated instructions may be based on data from accelerometers, gyros and tilt sensors located at the lower or upper portion of the mast.
  • the calculated instructions are based on data from at least one accelerometer, gyros or tilt sensor located in the sensor element.
  • the calculated instructions are based on data from at least one tilt sensor or accelerometer to calculate the lean angles of the upper portion or the lower portion of the mast.
  • the calculated instructions are based on data from accelerometers in such a way that deflection is calculated dynamically by distance travelled by the upper portion of the mast as measured by acceleration, the time period of the movement and by calculating the second order integral of the acceleration over the time period, wherein the deflection is subsequently estimated from the relationship between the length of the mast and the travelled distance.
  • the calculated instructions are based on data from gyros in such a way that deflection is calculated dynamically as angular distance travelled by the upper portion of the mast as measured by angular acceleration, the time period of the movement and by calculating the second order integral of the angular acceleration over the squared time period.
  • the calculated instructions are based on data from tilt sensors to measure the deflection in such a way that the dynamic deflection can be estimated separate from the static lean angle of the mast, where the average is determined to be a static lean angle.
  • the calculated instructions are based on data from multiple accelerometers, tilt sensors or gyros in combination to achieve greater accuracy in calculating the deflection or lean angle of the mast.
  • the calculated instructions are based on data from separate sensors at the lower portion of the mast and the upper portion of the mast, to estimate mast deflection as the difference in angle between the upper and lower portion of the mast.
  • a method for protecting a deployable mast from excessive wind conditions the mast having an upper portion extending upwardly relatively the ground, and a lower portion closer to the ground than the upper portion, wherein with the method includes using an actuator that is coupled to the mast and being designed for altering, based on calculated instructions derived from mast conditions, the elevation above ground of the mast upper portion.
  • the method may comprise including using data from gyro sensors, accelerometers, and tilt sensors detecting the deployed height/length of the mast.
  • the method may comprise including using static data from tilt sensors or accelerometers to calculate the lean angles of the upper portion or the lower portion of the mast.
  • the method comprises using data from at least one accelerometer, gyro or tilt sensor located in the sensor element.
  • the method comprises using data from tilt sensors or accelerometers in the sensor element to calculate the lean angles of the upper portion or the lower portion of the mast.
  • the method comprises using data from accelerometers in such a way that deflection is calculated dynamically by distance travelled by the upper portion of the mast as measured by acceleration, the time period of the movement and by calculating the second order integral of the acceleration over the time period, wherein the deflection is subsequently estimated from the relationship between the length of the mast and the travelled distance.
  • the method comprises using data from gyros in such a way that deflection is calculated dynamically as angular distance travelled by the upper portion of the mast as measured by angular acceleration, the time period of the movement and by calculating the second order integral of the angular acceleration over the squared time period.
  • the method comprises using data from tilt sensors to measure the deflection in such a way that the dynamic deflection can be estimated separate from the static lean angle of the mast, where the average is determined to be a static lean angle.
  • the method comprises using data from multiple accelerometers, tilt sensors or gyros in combination to achieve greater accuracy in calculating the deflection or lean angle of the mast.
  • the method comprises using separate sensors at the lower portion of the mast and the upper portion of the mast, to estimate mast deflection as the difference in angle between the upper and lower portion of the mast.
  • a telescopic mast is employed due to its simplicity, low weight and load carrying capacity.
  • the mast may be supported by a structure.
  • the invention is however not limited to this type of mast, but applies to any type mast that is capable of changing elevation by use of an actuator.
  • the actuator may be of any type such as hydraulic, pneumatic, screw spindle, belt, rope, wire rope or combination thereof.
  • An elevation sensing transducer is connected preferably to the actuator.
  • the system includes an electronic drive system.
  • the drive system is designed to calculate the required elevation of the mast upper portion based on one or more of the above-mentioned data. Further, the drive system controls the actuator to move the upper portion to the required elevation where signals from the transducer indicate that the elevation is correct.
  • Fig. 1 shows a principal sketch of a system according to the invention in use; and Fig. 2 shows a sketch of the system including some details.
  • the reference number 1 denotes a telescopic mast that has an upper portion 2 and a lower portion 4. At its lower portion 4 that is close to the ground 6 the mast is equipped with an actuator 8 that is designed to move the upper portion 2 at least in the vertical direction, thus changing the elevation 10 of the upper portion 2 relative the ground 6.
  • the mast 1 is carrying an arbitrary payload 3 at its upper portion 2.
  • the upper portion of the mast 2 is additionally equipped with a sensor element 12.
  • the actuator 8 here in the form of an electric linear worm screw actuator, has an elevation sensing transducer 20.
  • the actuator 8 and the transducer 20 communicates through wires 22 with a drive system 24.
  • the drive system 24 has the necessary hardware and software to calculate the desired elevation 10 of the mast 1 upper portion 2 based on inputs from the sensor element 12. Then the drive system 24 controls the actuator 8 with its elevation sensing transducer 20 to the elevation 10 required for safe operation of the mast.
  • the system 24 typically allows extension of the mast when the mast is operating within its specified parameters, and will automatically reduce the elevation 10 when the mast is no longer operating within its specified parameters.
  • the specified parameters might include allowable deflection of the mast, maximum allowable lean angle or maximum mast bending required for safe operation.
  • the system may be designed such that deployment (or further deployment) by an operator of the mast is prevented in case the mast is not within these specified parameters (for instance when the mast is not sufficiently straight).
  • the drive system 24 may repeat the calculations at desired intervals, and in the case of the upper portion of the mast is moving, the calculations and height adjustment are repeated sufficiently often to respond to conditions and ensure the mast is operating safely.
  • the invention may be imple- mented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the device claim enumerating several means, several of these means may be embodied by one and the same item of hardware.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Gyroscopes (AREA)

Abstract

L'invention concerne un système de protection d'un mât déployable (1), possédant une partie supérieure (2) s'étendant vers le haut par rapport au sol (6), et une partie inférieure (4) plus rapprochée du sol (6) que la partie supérieure (2), le mât au niveau de la partie supérieure (2) étant équipé d'un élément capteur (12), caractérisé en ce que le mât au niveau de la partie supérieure (2) est équipé d'un élément capteur (12), le mât (1) étant équipé d'un actionneur (8) qui, sur base d'instructions calculées dérivées de conditions du mât, est conçu pour modifier l'élévation au-dessus du sol (10) de la partie supérieure de mât (2).
PCT/NO2015/050189 2014-10-14 2015-10-13 Système et procédé de protection d'un mât déployable vis-à-vis de conditions anormales de fonctionnement WO2016060569A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462063689P 2014-10-14 2014-10-14
US62/063,689 2014-10-14

Publications (1)

Publication Number Publication Date
WO2016060569A1 true WO2016060569A1 (fr) 2016-04-21

Family

ID=55746999

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2015/050189 WO2016060569A1 (fr) 2014-10-14 2015-10-13 Système et procédé de protection d'un mât déployable vis-à-vis de conditions anormales de fonctionnement

Country Status (1)

Country Link
WO (1) WO2016060569A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113097686A (zh) * 2021-04-02 2021-07-09 南京航空航天大学 一种基于恶劣环境应用的ads-b接收机天线装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007083171A1 (fr) * 2006-01-20 2007-07-26 Slavko Crnogorac Station de télécommunication portative
US20080223134A1 (en) * 2005-08-09 2008-09-18 Sven Homburg Method and Device For Testing the Stability and/or Bending Strength of Masts
AU2010100828A4 (en) * 2010-08-03 2010-09-09 Solar Hire Pty Ltd Solar lighting tower
US20110185647A1 (en) * 2010-02-01 2011-08-04 Aluma Tower Company, Inc. Automated telescoping tower
US20130039049A1 (en) * 2011-08-09 2013-02-14 David G. Timmins Mobile light tower
GB2507033A (en) * 2012-09-06 2014-04-23 Lateplay Ltd Mobile extendible mast and controller

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080223134A1 (en) * 2005-08-09 2008-09-18 Sven Homburg Method and Device For Testing the Stability and/or Bending Strength of Masts
WO2007083171A1 (fr) * 2006-01-20 2007-07-26 Slavko Crnogorac Station de télécommunication portative
US20110185647A1 (en) * 2010-02-01 2011-08-04 Aluma Tower Company, Inc. Automated telescoping tower
AU2010100828A4 (en) * 2010-08-03 2010-09-09 Solar Hire Pty Ltd Solar lighting tower
US20130039049A1 (en) * 2011-08-09 2013-02-14 David G. Timmins Mobile light tower
GB2507033A (en) * 2012-09-06 2014-04-23 Lateplay Ltd Mobile extendible mast and controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113097686A (zh) * 2021-04-02 2021-07-09 南京航空航天大学 一种基于恶劣环境应用的ads-b接收机天线装置
CN113097686B (zh) * 2021-04-02 2022-03-04 南京航空航天大学 一种基于恶劣环境应用的ads-b接收机天线装置

Similar Documents

Publication Publication Date Title
JP7471796B2 (ja) 光学センサ及び／又は電磁センサを使用してクレーン状態を判定するためのシステム
US10597266B2 (en) Crane and method for monitoring the overload protection of such a crane
CA3045003C (fr) Systeme de commande pour d'une structure d'eolienne flottante
US10752473B2 (en) Method of monitoring crane safety and a system for monitoring crane safety
ES2750866T3 (es) Dispositivo y procedimiento de monitorización y control en torres telescópicas de iluminación
JP5087853B2 (ja) エレベータ装置
US10508001B2 (en) Elevator system
CN108008418B (zh) 建筑施工塔吊机的gnss塔臂健康监测预警系统和方法
CN107250029A (zh) 起重机以及用于监测此类起重机的过载保护的方法
JP2020515483A (ja) 絶縁型高所作業車及びその絶縁型作業床の自動幅制限方法
KR102533770B1 (ko) 구조물의 안전 관련 데이터를 측정하는 스마트 안전 관리 센서
CN109996750B (zh) 用于风力涡轮机部件的提升装置和方法
JP2006044932A (ja) クレーンの姿勢演算装置、過負荷防止装置、および作業範囲制限装置
CN101580208A (zh) 缆索起重设备的安全装置
JP5920860B2 (ja) クレーンの制御装置
WO2016060569A1 (fr) Système et procédé de protection d'un mât déployable vis-à-vis de conditions anormales de fonctionnement
JP6238472B2 (ja) 重負荷の運送制御システム、運送手段、及び運送制御方法
JP4363378B2 (ja) ロボット
US10167176B2 (en) Automatic erecting of a crane
RU2521445C2 (ru) Башенный кран с подъемной стрелой
KR20190121565A (ko) 선박리프트 플랫폼 설치용 구조물 및 이를 이용한 선박리프트 플랫폼의 설치 방법
CN103922232A (zh) 一种自升式塔机降塔工艺
JP7283263B2 (ja) クレーン、クレーンにおけるウエイト状態判定方法
AU2021281375A1 (en) Offshore transfer system with internal relative movement compensation
EP2700604A1 (fr) Procédé et agencement de commande anti-ballant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15850355

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15850355

Country of ref document: EP

Kind code of ref document: A1