EP3775966A1 - Procede et systeme d'evaluation de la trajectoire d'un operateur dans un atelier - Google Patents
Procede et systeme d'evaluation de la trajectoire d'un operateur dans un atelierInfo
- Publication number
- EP3775966A1 EP3775966A1 EP19720943.0A EP19720943A EP3775966A1 EP 3775966 A1 EP3775966 A1 EP 3775966A1 EP 19720943 A EP19720943 A EP 19720943A EP 3775966 A1 EP3775966 A1 EP 3775966A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminals
- trajectory
- registration
- workshop
- resetting
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005259 measurement Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000013507 mapping Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 27
- 239000002689 soil Substances 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000006399 behavior Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012952 Resampling Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 101150064138 MAP1 gene Proteins 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
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- 238000005192 partition Methods 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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
- G01C21/04—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means
- G01C21/08—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by terrestrial means involving use of the magnetic field of the earth
-
- 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
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
- G01C21/1654—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments with electromagnetic compass
-
- 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
- G01C21/206—Instruments for performing navigational calculations specially adapted for indoor navigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0888—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values for indicating angular acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
- G01S5/0258—Hybrid positioning by combining or switching between measurements derived from different systems
- G01S5/02585—Hybrid positioning by combining or switching between measurements derived from different systems at least one of the measurements being a non-radio measurement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S2205/01—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations specially adapted for specific applications
- G01S2205/02—Indoor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0278—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves involving statistical or probabilistic considerations
Definitions
- the present invention is in the industrial field, and more particularly in the field of management of production workshops.
- operators are required to move, especially to interact with large machines, some automated, for a number of tasks.
- tasks to be accomplished we can cite in particular the ordinary driving of machines, the reaction to hazards, correction or maintenance actions, the supply of machinery with raw materials.
- the present invention aims to overcome these disadvantages by providing a method of evaluating operators in a production workshop that meet all of the above needs.
- the invention relates to a method of evaluating the trajectory of an operator provided with a magneto-inertial device in an industrial manufacturing workshop, the method comprising the following steps:
- the trajectories are advantageously calculated on the basis of measurement made by at least one magnetic sensor and at least one inertial sensor, which make it possible to determine, directly or indirectly, the following parameters: angles of roll, pitch, and yaw ( ) of the system ; movement speed ; relative displacement.
- the invention proposes a step of resetting the trajectory calculated to correct these determination errors.
- the magneto-inertial device comprises at least one magnetic sensor and at least one inertial sensor. Such a device will be described in more detail later.
- a method according to the invention comprises a step, prior to the data transmission step, of compressing said data. This makes it possible to reduce the size of the data to be transmitted, and thus to reduce the system architecture necessary for the implementation of such a method.
- the resetting step is a path resetting step by radiofrequency terminals, which comprises the following steps:
- the connected device records identification information from radio frequency devices installed in the workshop,
- the identification information is transmitted together with the measurement data,
- the calculated trajectory is modified based on the location of the radio frequency terminals identified.
- this radiofrequency registration step comprises a step of interrogating a database associating the radio frequency terminal identification information with a location of these terminals.
- Radio frequency terminals are for example RF1D chips or devices using BlueTooth technology or BlueTooth Low Energy technology. These terminals are preferably installed in different locations of the workshop in which a method according to the invention is intended to be implemented. The choice of locations is determined based on operators' characteristic waypoints, known to the workshop managers, and their location is recorded in a database.
- the choice of this type of technology for radiofrequency terminals is particularly guided by the need for small size devices, and also energy autonomy and service life.
- the terminals Preferably, have an adhesive support which allows easy positioning in different locations.
- the location of the radiofrequency terminals will advantageously be chosen so as to ensure a smooth passage of the operators.
- the radiofrequency terminals will preferably be chosen so as to fulfill one or more of the following criteria, particularly in view of the type of workshop accommodating the invention: the radio range of the resetting of the terminals is between 50 cm and 1 meter, the precision is of the order of 10 centimeters, and at most 50 centimeters, the energy autonomy of the registration terminals is between one week and one month.
- the method is such that the resetting step comprises a mapping registration step.
- various methods are known for making mapping resetting.
- the type of registration and the techniques used depend on the authorized movement space and the nature of the positioning solution, absolute or estimated.
- it has a means of absolute positioning of the vehicle, which reduces the risk of error trajectory determination.
- a map of the workshop in which the operator moves is used to perform a mapping resetting, and the resetting step then consists in determining a trajectory that respects both the shop floor plan and the uncertainty ranges on the measurements made.
- a particulate filter which consists in distributing the uncertainty on the trajectory in a set of particles, evolving independently and each containing a possible state of the system. Each particle that achieves an impossible path is eliminated. When the number of particles becomes too small, a re-sampling is carried out on the basis of the remaining particles. The new trajectory estimate then consists of the average of the positions of the "surviving" particles. Except in special cases, this average makes a valid journey and respects the initial uncertainty range.
- An isolated cloud is defined as a set of particles whose smallest distance with all the other particles exceeds a predefined threshold. This step is not performed at each iteration because it involves a large number of operations (proportional to the square of the number of particles).
- the particulate filtering implemented must also allow to correct a trajectory in a plan incorporating different levels as is the case in some workshops.
- the knowledge of the plan of the workshop includes a knowledge of the positions and directions of access to the different means of changing floors, as well as their destinations (gateway, stairs to a feeding point, etc. ).
- the measurements made by the connected device to include a measurement of the altitude of the wearer.
- This measurement of altitude makes it possible, in the implementation of the particulate filter, to eliminate the particles situated on a bad level.
- a step of height adjustment will therefore be expected, consisting of detecting the moments for which the carrier stage can be detected with certainty, and to remove particles accordingly.
- a particulate filter is particularly advantageous since it allows to limit the drift using the constraints imposed by the building of the plant to the trajectory followed. In addition, it does not require heavy prior work, since the plans of the workshop are sufficient, without the need to perform a full mesh of the workshop, as is the case for other techniques mapping.
- Different levels of card can be used: outer walls only when only the footprint of the plant is available, complete plan with the partitions, the spaces used by the machines, plan on different floors with identification of means of passage from one floor to another,
- This mapping registration technique to perform the trajectory correction thus has the following interests:
- transitions which include passages, doors, walls, stairs, walkways leading to one or more levels, and obstacles of all types.
- the algorithm is simplified accordingly, and makes it possible to estimate a path on several levels without any altitude information, i.e. starting only from the horizontal component of the trajectory.
- a classification of the transitions according to the soils to which they belong which makes it possible to significantly reduce the processing time compared to the case where the possibility of each path should be evaluated with respect to all the obstacles of the plane.
- This method has a robustness vis-à-vis the non-accuracies in the positioning of the elements (positions of the doors relative to the corresponding walls, or soils compared to neighboring floors). It is the average distance of the path of a particle between two time steps, to be parameterized by the user according to the case, which determines the precision required for the plane. More precisely, this average distance must be situated between the distance corresponding to the inaccuracies of the plane and the characteristic distance of the obstacles of the plane.
- This method offers the possibility, when a transition element is located at the intersection of two soils (eg wall of an area), to connect it to any of these two soils.
- This method ensures the validity of the path for a particle encountering several transitions on several soils between two time steps.
- the resetting step will comprise a first step of registration by radiofrequency terminals, and a second mapping resetting step.
- the registration step advantageously comprises two sub-steps: A pretreatment stage of the trajectory of the operator during which the trajectory resulting from the calculation is modified as a function of the detection of the radiofrequency terminals. In this pretreatment, the trajectory is deformed so that the points identified as close to a radiofrequency terminal are found in their proximity. The deformation of the segment between two different terminals may take into account the uncertainty estimated by the trajectory calculation.
- a step of applying a particulate filter to the modified path is a step of applying a particulate filter to the modified path.
- the trajectory can already be globally positioned and oriented on the building plan.
- the course drifts are limited to the paths between two terminals. For long journeys passing from time to time by different terminals, the accumulation of a significant error in heading can be excluded.
- the extension of the particulate filter reduces the cloud of particles, which reflects the certainty of the proximity of the terminal.
- the invention also relates to a system for implementing a method according to the invention, the system comprising one or more of:
- a connected device for example a connected bracelet, an example of which will be described later.
- the device advantageously comprises one or more of the following elements: magnetic and inertial sensors, on-board calculation software, a radio module for the detection of signals from radio frequency terminals, a power supply, and preferably a barometer / altimeter, radio frequency terminals installed at specific locations in the workshop.
- a remote computing server comprising the software means for calculating the trajectories from the raw data and the registration elements (radiofrequency terminals, vector cartography of the documented site of the forbidden zones).
- system further comprises a remote application server provided with data display means calculated to allow operation by a manager of the workshop.
- FIG. 1 shows a system according to the invention
- FIG. 2 shows an example of a connected bracelet.
- a system according to the invention is implemented in a workshop or a plant comprising several tire assembly machines.
- a modeled map 1 of the workshop or factory including o the constraints (walls, machinery, forbidden passages ...) o the means of changing stage (position on each level, approximate relative height) - io -
- Measurements from connected devices 3 carried by one or more operators working on one of the machines namely, the speed - or position - vertical on the one hand, the speed - or position - horizontal on the other hand.
- the attitude can also be raised if it is relevant, for example if the workshop is located on several levels.
- An initialization step 4 performed at startup, but also possible at any time to reset the filter will take as input the horizontal position, the level and direction of start of advancement provided by the user.
- a floor change detection filter 5 will rotate for each particle with the means of changing the nearest stage for it from its position. As soon as a beginning of change of stage is detected (which will happen on a large set of particles at the same time), the constraint is integrated in the weighting 6 of the particles.
- the second element used for weighting will be the crossing of walls or machines, indicating that the particle is again not in the right position.
- a resampling 7 is also used to adapt the number of particles used to the available computing power and the time given to the treatment.
- Figure 2 shows an example of a bracelet for a portable device advantageously implemented in the present invention. More specifically, Figure 2 - It - shows the two elements 10 and 20 of a bracelet, each element being shown in two different views.
- the portable device has a touch screen display, not shown in the figure, and intended to display alerts from, and a bracelet for hanging on the wrist of an operator.
- This bracelet has a secure clasp, which ensures the maintenance position of the device running, but allows the release of the wrist in case of attachment of the bracelet. Indeed, such a device is intended to be used near a dangerous industrial machine. It is therefore useful to provide an opening of the clasp, for example when the bracelet is caught by an element of the industrial machine, in order to avoid injury to the wearer of the bracelet.
- the clasp comprises two parts, each of the parts being intended to be attached to a strand of the bracelet.
- each part comprises mechanical connection means for connecting it to the corresponding bracelet strand, and magnetic assembly means.
- the magnetic assembly means of the first and second parts are intended to cooperate.
- the first piece is intended to be inserted into a hole in the first strand bracelet.
- This first strand has several orifices 12 for adjusting the size of the bracelet.
- this first piece comprises an axis having at a first end a ball 13 for insertion into the orifice of the bracelet.
- the diameter of the ball is chosen so that it is possible to insert voluntarily the first piece in an orifice of the bracelet, but it is impossible to exit it involuntarily.
- a circular metal plate 14 At the other end of the axis is a circular metal plate 14, having in its center a pin 15.
- the second part also comprises a magnetic circular plate 24, in the center of which is formed a circular notch 25 for receiving the stud of the first piece.
- the magnetic and metallic nature of the two plates allows a hooking of the two parts when they are in contact.
- the stud 15 and the notch 25 make it possible to prevent lateral sliding of one piece relative to the other.
- the magnetic plate is installed on a support 22 having an axis intended to be inserted into an end having a preformed orifice.
- the shape of the support is advantageously chosen so that it does not protrude, or slightly, laterally from the bracelet after closure.
- the characteristics of the plates of the first and second parts are chosen to allow a recess when a large force is exerted on the bracelet.
- the magnetic elements will be chosen so that they unhook when a lateral force between 15N and 40N is exerted.
- lateral force means a force exerted in a direction substantially parallel to the length of the bracelet, and not a force exerted according to the normal strap.
Landscapes
- Remote Sensing (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Navigation (AREA)
- General Factory Administration (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1852717A FR3079618B1 (fr) | 2018-03-29 | 2018-03-29 | Procede et systeme d'evaluation de la trajectoire d'un operateur dans un atelier |
| PCT/FR2019/050698 WO2019186062A1 (fr) | 2018-03-29 | 2019-03-27 | Procede et systeme d'evaluation de la trajectoire d'un operateur dans un atelier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3775966A1 true EP3775966A1 (fr) | 2021-02-17 |
Family
ID=62948215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19720943.0A Withdrawn EP3775966A1 (fr) | 2018-03-29 | 2019-03-27 | Procede et systeme d'evaluation de la trajectoire d'un operateur dans un atelier |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20210025917A1 (fr) |
| EP (1) | EP3775966A1 (fr) |
| CN (1) | CN111971571A (fr) |
| FR (1) | FR3079618B1 (fr) |
| WO (1) | WO2019186062A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210396522A1 (en) * | 2020-06-17 | 2021-12-23 | Microsoft Technology Licensing, Llc | Pedestrian dead reckoning using map constraining features |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7239962B2 (en) * | 2003-02-21 | 2007-07-03 | Sony Corporation | Method and apparatus for a routing agent |
| US20070156372A1 (en) * | 2003-07-31 | 2007-07-05 | Thomas Christ | Determining distances in a warehouse |
| US7243001B2 (en) * | 2004-06-15 | 2007-07-10 | Amazon Technologies, Inc. | Time-based warehouse movement maps |
| EP2527859B1 (fr) * | 2004-10-29 | 2016-04-20 | Skyhook Wireless, Inc. | Base de données de radiobalises de localisation et serveur de localisation, procédé de construction d'une base de données de radiobalises de localisation, et service basé sur la localisation dans lequel sont utilisés cette base de données et ce serveur |
| FR2886501A1 (fr) * | 2005-05-31 | 2006-12-01 | France Telecom | Procede et dispositif de localisattion d'un terminal dans un reseau local sans fil |
| US8731817B2 (en) * | 2010-03-03 | 2014-05-20 | Aaron E. Ballew | Indoor localization with wayfinding techniques |
| US9322657B2 (en) * | 2011-10-04 | 2016-04-26 | International Business Machines Corporation | Mobility route optimization |
| WO2013188598A2 (fr) * | 2012-06-12 | 2013-12-19 | Trx Systems, Inc. | Fusion de données de capteurs et de cartes au moyen d'une optimisation basée sur une contrainte |
| CN102927980B (zh) * | 2012-10-12 | 2017-05-10 | 深圳市宇恒互动科技开发有限公司 | 一种基于三维多点无线与微惯导的室内定位系统、方法 |
| US9175963B2 (en) * | 2013-01-10 | 2015-11-03 | MCube Inc. | Dead reckoning based initialization of position and heading using discrete position indicators |
| EP2806248B1 (fr) * | 2013-04-12 | 2018-09-12 | Leica Geosystems AG | Procédé d'étalonnage d'un dispositif de détection et dispositif de détection |
| US9326103B2 (en) * | 2013-07-12 | 2016-04-26 | Microsoft Technology Licensing, Llc | Indoor location-finding using magnetic field anomalies |
| CN103616025A (zh) * | 2013-12-05 | 2014-03-05 | 金陵科技学院 | 一种现场人员三维定位导航系统 |
| TWI565962B (zh) * | 2015-05-19 | 2017-01-11 | 萊特旺服務有限公司 | 室內及其週邊地區定位系統、定位方法及行動通訊裝置 |
| CN107094319B (zh) * | 2016-02-17 | 2021-06-04 | 王庆文 | 一种高精度室内外融合定位系统和方法 |
| US9881277B2 (en) * | 2016-03-28 | 2018-01-30 | Amazon Technologies, Inc. | Wrist band haptic feedback system |
| US9820100B1 (en) * | 2016-06-17 | 2017-11-14 | Qualcomm Incorporated | Multi-source positioning |
| CN106403946A (zh) * | 2016-12-12 | 2017-02-15 | 北京华源热力管网有限公司 | 一种用于热网运检人员的智能微惯导三维定位系统 |
| US10234291B1 (en) * | 2017-10-06 | 2019-03-19 | Cisco Technology, Inc. | Collaborative localization between phone and infrastructure |
-
2018
- 2018-03-29 FR FR1852717A patent/FR3079618B1/fr active Active
-
2019
- 2019-03-27 WO PCT/FR2019/050698 patent/WO2019186062A1/fr not_active Ceased
- 2019-03-27 US US17/043,336 patent/US20210025917A1/en not_active Abandoned
- 2019-03-27 EP EP19720943.0A patent/EP3775966A1/fr not_active Withdrawn
- 2019-03-27 CN CN201980023282.8A patent/CN111971571A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN111971571A (zh) | 2020-11-20 |
| US20210025917A1 (en) | 2021-01-28 |
| WO2019186062A1 (fr) | 2019-10-03 |
| FR3079618A1 (fr) | 2019-10-04 |
| FR3079618B1 (fr) | 2020-04-10 |
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