WO2014140732A1 - Mining machine position tracking and mapping - Google Patents
Mining machine position tracking and mapping Download PDFInfo
- Publication number
- WO2014140732A1 WO2014140732A1 PCT/IB2014/000302 IB2014000302W WO2014140732A1 WO 2014140732 A1 WO2014140732 A1 WO 2014140732A1 IB 2014000302 W IB2014000302 W IB 2014000302W WO 2014140732 A1 WO2014140732 A1 WO 2014140732A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- emitter
- unit
- units
- machine
- receiver
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Definitions
- the present invention relates to mining machine tracking and mapping.
- optical theodolites can be used to accurately position equipment using line of sight measurements.
- line of sight measurements cannot operate properly in dusty conditions such as found in an underground coal mine.
- a line of sight measurement may not be available if the mining machine is operating in a side cut and is obscured from view by intervening strata of the mine.
- Gyroscope and accelerometer based systems are also not suitable as the mining machine may move at a rate that is too slow for these systems to generate accurate positioning data over an extended operational cycle. Inaccuracies may also be introduced due to operational movement of the machine resulting from vibration, shifting, or rolling of the machine as a result of reactionary forces generated through use of equipment such as a cutting boom or the like.
- One current process for recording the direction and advancement of a machine is to wait until operation of the machine is halted and the dust is settled, at which time a geometer can make an accurate laser-beam assisted measurement.
- a system for determining a position of a mining machine in an underground mine comprising: a first emitter unit and a first receiver unit, one of the emitter unit or the receiver unit configured to be positioned in fixed relation to a mine wall and the other of the emitter unit or the receiver unit configured to be mounted relative to the machine, wherein the emitter unit is configured to transmit a coded magnetic signal for receipt by the receiver unit, the system further comprising at least one processor configured to identify a distance and a relative angle between the emitter and receiver units based on the signal as received by the receiver unit.
- the system further includes a first antenna associated with the receiver unit for transmitting information to the at least one processor relating to the signal as received by the receiver unit.
- the emitter unit includes a second antenna for receiving the information from the receiver unit such that the emitter and receiver units operate in a closed communications loop.
- the system further includes multiple second emitter units, wherein each of the first emitter unit and the second emitter units comprises a respective coded magnetic field generator.
- each of the first and second emitter units includes a pitch and yaw mechanism for mechanical rotation of the respective magnetic field generator.
- the system further includes an array of the first receiver unit and multiple second receiver units for receiving respective uniquely coded magnetic signals from the first and second emitter units.
- the emitter units function to provide 3-dimensional positioning information to allow tracking of the machine.
- the emitter units are mounted on the mining machine.
- the receiver units are arrayed at predetermined locations through the mine.
- system further includes a mapping module for displaying an image and a position of the machine in the mine.
- system further includes equipment sensors arranged to feed into the mapping module to enable display of an operational position of one or more components of the machine.
- the system further includes detectors on the machine, to monitor operational movement of the machine, said operational movement comprising at least one of tilt, roll, or vibration, and the at least one processor is configured to compensate for the operational movement.
- a method of tracking a mining machine in a mine using signal transmission between at least one emitter unit and at least one receiyer unit wherein one of the emitter unit or the receiver unit is positioned in fixed relation to a mine wall and the other of the emitter unit or the receiver unit is mounted relative to the machine, the method including transmitting a coded magnetic signal from the emitter unit, receiving the signal at the receiver unit, and sending information in relation to the received signal to a processor in order to calculate a range and a relative angle between the emitter and receiver units.
- the emitter unit provides 3-dimensional position information to allow tracking and mapping of the machine.
- the coded magnetic signal is transmitted by way of a through-strata coded magnetic field and the range and angle calculated between the units allows relative position of the emitter unit in the mine to be determined in 3-dimensions.
- peak signal strength detection is used to find the most direct angle between the emitter unit and receiver unit.
- the information from the receiver unit, resulting from reception of the signal is sent to the processor via wireless radio link.
- the information sent over the radio link is received by an antenna of the emitter unit such that the signal transmission, reception, and return sending of the information occurs in a closed communications loop.
- the at least one receiver unit comprises an array of receiver units, and the position of the mining machine is tracked using the array of receiver units.
- the at least one emitter unit comprises multiple emitter units mounted to the mining machine, and the method includes generating respective uniquely coded signals from the emitter units so that the signals, received by the receiver units which are respectively associated with the emitter units, are able to be separately identified as originating from the respective emitter units.
- the tracking is performed continuously to follow movement of the mining machine in real time.
- a mining operation including tracking a mining machine, in accordance with the method described above, and identifying the position of the mining machine on a displayed map of the mine. [0035] In an embodiment, the identified position of the mining machine is used to control operation cycles of the mining machine.
- the mining operation further includes displaying operational positions of components of the mining machine on the displayed map, based on input form equipment sensors on the mining machine.
- Figure 1 is a schematic top view of mine and a system for determining a position of a mining machine within the mine;
- Figure 2 is a diagrammatic representation of a reference unit and emitter unit used in the system.
- Figure 3 is an illustration representing interaction and communication between the reference unit and emitter unit.
- a system 1 for tracking a mining machine 2 in a mine 3.
- the system 1 includes a receiver unit 4, fixed to a wall 5 of the mine 3, and an emitter unit 6 secured relative to the mining machine 2.
- the emitter unit 6 could be mounted to the wall 5 and the receiver unit 4 would then be mounted to the mining machine 2.
- the emitter unit 6 is designed to emit a low frequency coded magnetic signal.
- the receiver unit detects the field strength and the pitch and yaw information sent from the emitter unit. The detected relative angle is indicated by bearing line 7.
- the signal from the emitter unit 6 is uniquely coded and is transmitted with a specific yaw and pitch setting, and that effectively provides a characteristic signal profile specific to the emitter unit 6.
- the signal information received at the receiver unit 4 is sufficient to identify the emitter unit 6 and the range and relative 3-dimensional position of the emitter unit 6. This information is re-transmitted in a closed communications loop back to the emitter unit 6, by radio transmitter, for processing onboard the mining machine.
- the system 1 can accurately identify the positions of the machine 2. By continuing to monitor the position of the machine 2, the system 1 provides real time tracking of the machine as it travels through the mine.
- the relative positioning between emitter unit 6 and receiver unit 4, as indicated by bearing line 12 can be determined as the magnetic signal is a low frequency, through-strata magnetic field and, as such, is not obstructed by the intervening rock or coal strata.
- a second emitter unit 13 can be mounted to the machine 2 at a different location.
- the second emitter unit 13 can also be configured to transmit a uniquely coded signal specific to the emitter unit 13.
- the emitter unit 13 is in closed loop communication with a second receiver unit 14 fixed to an opposite side 15 of the mine wall 5.
- Further receiver units can be added at various predetermined locations along the mine 3, and additional transmitter units can be included, as required, in order to provide an array of units capable of providing highly accurate information in relation to the position of the machine 2 within the mine 3.
- the emitter units 6, 13 function as magnetic theodolites, providing 3-dimensional position information to allow accurate and continuous real time tracking of the position and movement of the machine 2 within the mine 3.
- the system 1 shown in Figure 1 is a diagrammatic representation of the location of the mining machine 2 in the mine 3. Such a representation may equally form the basis of a virtual image (that is, an image generated by a computer or other processor- based device on a display screen) of the mine 3 for an onboard operator. Alternatively, the virtual image may be available for viewing and monitoring in a remotely located operations control room. In either case, the system 1 may include a mapping module which shows a 3-dimensional image of the mining machine 2, accurately positioned in a virtual map of the mine 1.
- the mining machine also has various sensors for monitoring the position and operation of onboard equipment and components such as tracks or tires, cutter head, cutter boom, conveyor boom and any moveable parts operated by hydraulic jacks, or the like. Such sensors can also provide input to allow the position and operation of the equipment to be rendered into the same virtual image.
- the mining machine will also have detectors to monitor operational movement of the machine, such as tilt, roll or vibration, and the system 1 is configured to compensate for those movements in determining the distance and relative angle between the emitter and receiver units.
- mapping function thereby allows for complete oversight of the mining operation during an operational cycle of the machine.
- the emitter unit 6 includes a coded field generator 21 , a pitch interface driver 22, and a yaw interface driver 23 to provide a magnetic field generating device 24.
- the device 24 is rotatable to generate a non-circular uniquely coded magnetic field.
- the emitter unit 6 also includes a wireless interface 25 and a wireless antenna 26, as well as a microprocessor 27.
- the receiver unit 4 includes a magnetic coded field detector 28 for detecting the magnetic field generated by the emitter unit 6, a battery and interface electronics 29, a microprocessor and interface electronics 30, a wireless interface 31 , and a wireless antenna 32.
- the system 1 uses low frequency magnetic ranging.
- the emitter unit 6 sends two variables, yaw and pitch.
- the device 24 includes a pitch mechanical assembly 33 and a yaw mechanical assembly 34 holding the coded electromagnetic field generator 21.
- the device 24 is rotated by the yaw mechanical assembly 34, in a manner similar to rotation of a radar antenna to transmit the uniquely coded signal.
- the receiver unit 4 identifies the correct signal by way of the unique coding and senses the magnetic field vector that is used to calculate the direction of the magnetic signal. The signal strength is also detected.
- the signal strength and direction information is transmitted from the antenna 32 in a closed loop 19, back to the antenna 26 of emitter unit 6.
- the relative angle between the emitter unit 6 and the receiver unit 4 is determined with the microprocessor 27 by cross correlating the detected magnetic field vector with the known magnetic field profile produced by the coded field generating device 24.
- the range of the emitter unit 6 from the receiver unit 4 is determined on the basis of a standard RSSI (received signal strength indicator) measurement or peak signal strength detection, as would be known to a person skilled in the art.
- the methodology and calculations used to determine the specific 3 - dimensional positional relationship between the emitter unit 6 and receiver unit 4 can be varied or modified, as required, as would be apparent to a person skilled in the art, to suit the specific environment and circumstances of the mine 3.
- the detection and ranging of the magnetic signal renders the invention suitable for accurately identifying the location of the mining machine, even through intervening strata, which provides a substantial advantage over the prior art locations techniques.
- the cycle of a mining operation does not need to be interrupted to check the position of the machine.
- Operation cycles can be monitored remotely and planned with accuracy in advance. This assists with general mine management and can be used to generate operational reports used for process optimization, training and simulation.
- the positional information and tracking combined with additional input of the machine sensors to accurately locate the operational positions of various mining equipment and tools means many mining operations can be automated.
- operational movement detectors such as solid-state gravity sensor (MEMS) based pitch and roll detectors
- MEMS solid-state gravity sensor
- An embodiment of the invention relates to a system for determining a position of a mining machine in an underground mine.
- the system comprises a first emitter unit and a first receiver unit.
- Terms such as “first” and “second” are provided as labels to differentiate elements from one another, and are not meant to necessarily denote an order or placement, or to indicate that an embodiment necessarily includes multiple of said elements.
- One of the emitter unit or the receiver unit is configured to be positioned in fixed relation to a mine wall.
- the emitter unit or receiver unit may be configured to be fixed on the mine wall, including having a housing suitable for a mine environment, e.g., water resistant, dust resistant, shock resistant, or the like, and an attachment assembly, coupled to the housing, for attaching the unit to the wall.
- the other of the emitter unit or the receiver unit is configured to be mounted relative to the machine.
- the emitter unit and/or the receiver unit may be configured to be mounted to the machine. This includes the emitter unit and/or the receiver unit being built into the machine, such that the emitter unit and/or the receiver unit is in-effect permanently part of the machine.
- the emitter unit is configured to transmit a coded magnetic signal for receipt by the receiver unit.
- the system further comprises at least one processor configured to identify a distance and a relative angle between the emitter and receiver units based on the signal as received by the receiver unit.
- the processor may be part of the emitter unit, part of the receiver unit, part of the mining machine (e.g., a processor on the mining machine that is also used to control movement or other operations of the mining machine), a processor located in a central mine operations control room, or the like, and/or the various functions may be performed in a distributed manner across multiple such processors.
- one of the emitter unit or the receiver unit is positioned in fixed relation to a mine wall, e.g., attached to the mine wall.
- the other of the emitter unit or the receiver unit is mounted relative to the machine, e.g., attached to the machine.
- the emitter unit transmits a coded magnetic signal, which is received by the receiver unit.
- Information of the coded magnetic signal as received by the receiver unit is communicated to the at least one processor.
- the at least one processor identifies a distance and a relative angle between the emitter and receiver units based on the information.
- system further comprises a first antenna associated with the receiver unit (e.g., attached to the receiver unit) for transmitting information to the at least one processor relating to the signal as received by the receiver unit.
- the emitter unit includes a second antenna for receiving the information from the receiver unit, such that the emitter and receiver units operate in a closed communications loop.
- the system comprises multiple emitter units (e.g., the first emitter unit and plural second emitter units), each with a respective coded magnetic field generator.
- each emitter unit may include a pitch and yaw mechanism for mechanical rotation of its respective magnetic field generator.
- the system comprises an array of receiver units (e.g., the first receiver unit and plural second receiver units) for receiving respective uniquely coded magnetic signals from the multiple emitter units.
- receiver units e.g., the first receiver unit and plural second receiver units
- the system comprises a first emitter unit, a first receiver unit, and at least one processor.
- One of the emitter unit or the receiver unit is configured to be positioned in fixed relation to a mine wall.
- the other of the emitter unit or the receiver unit is configured to be mounted relative to the machine.
- the emitter unit is configured to transmit a coded magnetic signal for receipt by the receiver unit.
- the emitter and receiver units further comprise respective antennas and transceivers for RF or other wireless communications.
- the receiver unit is configured to communicate, using its respective antenna and transceiver, information about the coded magnetic signal as received by the receiver unit.
- the at least one processor (e.g., which may be part of the emitter unit) is configured to identify a distance and a relative angle between the emitter and receiver units based on the information (about the signal as received by the receiver unit) transmitted by the receiver unit and received by the emitter unit.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2903956A CA2903956C (en) | 2013-03-14 | 2014-03-13 | Mining machine position tracking and mapping |
JP2015562356A JP6438898B2 (en) | 2013-03-14 | 2014-03-13 | Miner position tracking and mapping |
BR112015022561-6A BR112015022561B1 (en) | 2013-03-14 | 2014-03-13 | SYSTEM FOR DETERMINING A POSITION OF A MINING MACHINE, METHOD OF TRACKING A MINING MACHINE AND MINING OPERATION |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013900878 | 2013-03-14 | ||
AU2013900878A AU2013900878A0 (en) | 2013-03-14 | Mining machine position tracking and mapping |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014140732A1 true WO2014140732A1 (en) | 2014-09-18 |
Family
ID=51535945
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2014/000302 WO2014140732A1 (en) | 2013-03-14 | 2014-03-13 | Mining machine position tracking and mapping |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6438898B2 (en) |
AU (1) | AU2014201513B2 (en) |
CA (1) | CA2903956C (en) |
WO (1) | WO2014140732A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107806879A (en) * | 2017-11-29 | 2018-03-16 | 西安科技大学 | A kind of coal mine localization method and alignment system |
CN109538208A (en) * | 2018-12-21 | 2019-03-29 | 冀中能源峰峰集团有限公司 | A kind of compound positioning system of cutting head of roadheader and method |
CN111336982A (en) * | 2020-04-08 | 2020-06-26 | 辽宁工程技术大学 | Mining equipment attitude detection device and method based on optical signals |
CN112855266A (en) * | 2020-12-31 | 2021-05-28 | 北京天地玛珂电液控制系统有限公司 | Intelligent monitoring and autonomous cooperative follow machine device of coal mining machine and inspection platform system |
CN113587929A (en) * | 2021-09-30 | 2021-11-02 | 中煤科工开采研究院有限公司 | Method and device for cooperative positioning under underground coal mine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11069246B2 (en) | 2017-05-24 | 2021-07-20 | Ford Global Technologies, Llc | Method and apparatus for low frequency localization of surrounding vehicles |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6802237B1 (en) * | 2003-04-28 | 2004-10-12 | The United States Of America As Represented By The Secretary Of The Navy | System and method for neutralization of mines using robotics and penetrating rods |
US20100312428A1 (en) * | 2003-03-20 | 2010-12-09 | Roberge Andre C | Gnss guidance and machine control |
US20110248706A1 (en) * | 2010-04-09 | 2011-10-13 | Raytheon UTD, Inc. | Method and system for navigation using magnetic dipoles |
US20120286789A1 (en) * | 1996-05-03 | 2012-11-15 | Mercer John E | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
US20130038320A1 (en) * | 2011-08-08 | 2013-02-14 | Larry D. Frederick | Proximity detection system with concurrent rf and magnetic fields |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2045453T3 (en) * | 1988-09-02 | 1994-01-16 | British Gas Plc | DEVICE TO CONTROL THE POSITION OF A SELF-PROPELLED DRILLING TOOL. |
CA2288411C (en) * | 1992-08-14 | 2001-10-16 | British Telecommunications Public Limited Company | Position location system |
US5589775A (en) * | 1993-11-22 | 1996-12-31 | Vector Magnetics, Inc. | Rotating magnet for distance and direction measurements from a first borehole to a second borehole |
US6411094B1 (en) * | 1997-12-30 | 2002-06-25 | The Charles Machine Works, Inc. | System and method for determining orientation to an underground object |
JP2949117B1 (en) * | 1998-09-11 | 1999-09-13 | 日本電信電話株式会社 | Position detection device |
JP2005027249A (en) * | 2003-07-04 | 2005-01-27 | Reideikku:Kk | Antenna for ground measuring apparatus |
SE0303156D0 (en) * | 2003-11-26 | 2003-11-26 | Atlas Copco Rock Drills Ab | Navigation system |
WO2007075553A2 (en) * | 2005-12-16 | 2007-07-05 | Raytheon Utd Inc. | Positioning system and method |
JP4736070B2 (en) * | 2009-11-25 | 2011-07-27 | アイチ・マイクロ・インテリジェント株式会社 | Portable navigation system |
DE102010016317A1 (en) * | 2010-04-01 | 2011-10-06 | Bucyrus Europe Gmbh | Method for locating persons and / or mobile machines in mine areas using the RFID technology and longwall extraction system for carrying out the method |
-
2014
- 2014-03-13 WO PCT/IB2014/000302 patent/WO2014140732A1/en active Application Filing
- 2014-03-13 JP JP2015562356A patent/JP6438898B2/en active Active
- 2014-03-13 AU AU2014201513A patent/AU2014201513B2/en active Active
- 2014-03-13 CA CA2903956A patent/CA2903956C/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120286789A1 (en) * | 1996-05-03 | 2012-11-15 | Mercer John E | Tracking the positional relationship between a boring tool and one or more buried lines using a composite magnetic signal |
US20100312428A1 (en) * | 2003-03-20 | 2010-12-09 | Roberge Andre C | Gnss guidance and machine control |
US6802237B1 (en) * | 2003-04-28 | 2004-10-12 | The United States Of America As Represented By The Secretary Of The Navy | System and method for neutralization of mines using robotics and penetrating rods |
US20110248706A1 (en) * | 2010-04-09 | 2011-10-13 | Raytheon UTD, Inc. | Method and system for navigation using magnetic dipoles |
US20130038320A1 (en) * | 2011-08-08 | 2013-02-14 | Larry D. Frederick | Proximity detection system with concurrent rf and magnetic fields |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107806879A (en) * | 2017-11-29 | 2018-03-16 | 西安科技大学 | A kind of coal mine localization method and alignment system |
CN107806879B (en) * | 2017-11-29 | 2023-10-24 | 西安科技大学 | Coal mine positioning method and positioning system |
CN109538208A (en) * | 2018-12-21 | 2019-03-29 | 冀中能源峰峰集团有限公司 | A kind of compound positioning system of cutting head of roadheader and method |
CN111336982A (en) * | 2020-04-08 | 2020-06-26 | 辽宁工程技术大学 | Mining equipment attitude detection device and method based on optical signals |
CN112855266A (en) * | 2020-12-31 | 2021-05-28 | 北京天地玛珂电液控制系统有限公司 | Intelligent monitoring and autonomous cooperative follow machine device of coal mining machine and inspection platform system |
CN113587929A (en) * | 2021-09-30 | 2021-11-02 | 中煤科工开采研究院有限公司 | Method and device for cooperative positioning under underground coal mine |
CN113587929B (en) * | 2021-09-30 | 2022-01-25 | 中煤科工开采研究院有限公司 | Method and device for cooperative positioning under underground coal mine |
Also Published As
Publication number | Publication date |
---|---|
AU2014201513B2 (en) | 2015-05-21 |
JP2016516987A (en) | 2016-06-09 |
BR112015022561A2 (en) | 2017-07-18 |
CA2903956C (en) | 2021-05-25 |
JP6438898B2 (en) | 2018-12-19 |
AU2014201513A1 (en) | 2014-10-02 |
CA2903956A1 (en) | 2014-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2903956C (en) | Mining machine position tracking and mapping | |
US20080158052A1 (en) | Positioning apparatus and method | |
US7084636B2 (en) | Boring tool tracking/guiding system and method with unconstrained target location geometry | |
JP5806207B2 (en) | Position monitoring system for mobile machines | |
CA2765254C (en) | Movable object proximity warning system | |
US20160370805A1 (en) | Referenced vehicle control system | |
AU2022201209B2 (en) | A drill rig positioning and drill rod alignment system | |
AU2017202092A1 (en) | Ultra-wideband radio frequency tracking of an implement on a work vehicle | |
EP2817473B1 (en) | Apparatus for aligning drilling machines | |
CN105353348B (en) | A kind of system and method for being used to position underground coal mine movement target | |
CN113970329A (en) | Strapdown inertial navigation and laser sensing combined heading machine pose detection system and method | |
RU2006106229A (en) | GEOGRAPHIC DETECTORS FOR DRILLING DRIVING COMBINERS OF CONTINUOUS ACTION | |
AU2016234954A1 (en) | Mining machine position tracking and mapping | |
AU2015202277A1 (en) | Mining machine position tracking and mapping | |
AU2014271294B2 (en) | Machine positioning system utilizing relative pose information | |
US10422211B2 (en) | Apparatus for aligning drilling machines | |
BR112015022561B1 (en) | SYSTEM FOR DETERMINING A POSITION OF A MINING MACHINE, METHOD OF TRACKING A MINING MACHINE AND MINING OPERATION | |
US20100328172A1 (en) | Radome | |
JP5384890B2 (en) | Soil position guidance method and soil position guidance system | |
JPH08166240A (en) | Method of remote surveying dangerous zone | |
WO2021173085A1 (en) | System for managing interconnected objects | |
AU2006267949A1 (en) | Object detection system and method for use with mining machine | |
Holden et al. | GPS-based proximity warning system for mining and construction equipment | |
JPH0744376B2 (en) | Onboard antenna drive controller for ship stations for satellite communication |
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: 14763851 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2903956 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015/1018.1 Country of ref document: KZ |
|
ENP | Entry into the national phase |
Ref document number: 2015562356 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112015022561 Country of ref document: BR |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14763851 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 112015022561 Country of ref document: BR Kind code of ref document: A2 Effective date: 20150911 |