Method for instrumenting a container intended to be set moving in particular in order to mix an assortment of materials

Patent metadata

Field	Value
Publication number	US-10145932-B2
Application number	US-201414316452-A
Country	US
Kind code	B2
Filing date	Jun 26, 2014
Priority date	Jun 27, 2013
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

The method for instrumenting a container, especially intended to receive an assortment of materials, capable of being set moving in a preset coordinate system, said method comprises the following steps: placing at least one communicating element in the container on an internal surface of the container; and tracking the location of each communicating element over time in the preset coordinate system.

First claim

The invention claimed is:

1. A method for communicating with a container, forming a recipient for an assortment of materials configured to mix the assortment of materials, capable of being set in motion in a preset coordinate system, wherein the method comprises:
randomly placing a plurality of communicating elements in the container on an internal surface of the container, the communicating elements being fastened to the internal surface of the container and configured to deliver information outside of the container, the container having a known geometry;
determining a position of each of the communicating elements relative to one another on the internal surface of the container, wherein each of the communicating elements is equipped with a distance sensor, wherein the distance sensors acquire data representing distances between the respective communicating element and the other communicating elements, and wherein the position of each of the communicating elements on the internal surface of the container is determined from the known geometry of the container and from data delivered by the communicating elements taking into account the data representing the distances between the communicating elements acquired by the sensors; and
tracking the location of each of the communicating elements over time in the preset coordinate system while the container is in motion in the preset coordinate system, so as to define a frame of reference of the communicating elements relative to a frame of reference of the preset coordinate system in which the container is in motion.

2. The method according to claim 1 , wherein each of the communicating elements is equipped with at least one sensor selected from the group consisting of an accelerometer, a magnetometer, and a gyroscope, wherein the method comprises determining the data representing a behaviour of the communicating elements from the at least one sensor.

3. The method according to claim 1 , wherein the determining of the positions of the communicating elements comprises applying a calculation function taking as input at least one of:
a preset list of possible positions of the communicating elements relative to the internal surface of the container, and
a preset list of possible behaviours of the communicating elements.

4. The method according to claim 3 , wherein the calculation function is a greedy algorithm determining optimal positions for each of the communicating elements from at least one of (i) all possible respective positions and (ii) all possible behaviours, depending on at least one of (iii) the data representing the evolution of the respective positions of the communicating elements and (iv) the data representing the respective distances between the communicating elements.

5. The method according to claim 3 , wherein the calculation function receives as input a measurement noise associated with at least one of (i) the data representing the behaviours of the communicating elements and (ii) the determined data representing the respective distances between the communicating elements.

6. The method according to claim 5 , wherein the calculation function considers the measurement noises as being additive and Gaussian.

7. A method for monitoring at least one electronic object, wherein the method comprises:
implementing the method according to claim 1 ;
introducing the at least one electronic object into the container; and
tracking a behaviour of the at least one electronic object in the container from data delivered by at least one of the communicating elements regarding an interaction of the electronic object with the communicating element in which the communicating element acquires data on the location of the electronic object relative to the communicating element.

8. The method according to claim 7 , wherein the tracking of the behaviour of the at least one electronic object is performed while the container is moving in the preset coordinate system.

9. The method according to claim 7 ,
wherein the tracking of the behaviour of the at least one electronic object comprises:
determining the location of the at least one electronic object relative to the communicating elements; and
determining the location of the electronic object in the preset coordinate system, from the location determined for the electronic object relative to the communicating elements and from the positions of the communicating elements in the preset coordinate system at a corresponding instant in the tracking of the location of the communicating elements over time in the preset coordinate system.

10. The method according to claim 7 , wherein the method comprises tracking the location of the at least one electronic object in the preset coordinate system over time.

11. The method according to claim 7 , wherein the method comprises at least partially filling the container with an assortment of materials.

12. The method according to claim 11 , wherein the electronic object takes the form of one material among the assortment of materials and is placed in the assortment of materials before, after, or during the filling.

13. The method according to claim 11 , wherein the method comprises obtaining information on the state of the assortment of materials in the container from the tracking of the evolution of the movement of the electronic object.

14. The method according to claim 11 , wherein the container is a cement mixer transported on a truck, and the method comprises at least partially filling the container with aggregate.

15. The method according to claim 1 , wherein the random introduction of each of the communicating elements into the container is performed while the container is moving.

16. The method according to claim 1 , wherein the fastening of each of the communicating elements to the internal surface of the container is performed via magnetic attraction between each of the communicating elements and the internal surface of the container.

17. The method according to claim 1 , wherein the distance sensor of each of the communicating elements is selected from the group consisting of an acoustic sensor and an optical sensor.

18. The method according to claim 1 , wherein an origin of the preset coordinate system is attached to the container.

19. The method according to claim 1 , wherein the data delivered by the communicating elements correspond to a behaviour of the communicating elements attached to the internal surface of the container in the preset coordinate system.

20. A system comprising:
a plurality of communicating elements,
an element for determining the location of the communicating elements relative to one another on an internal surface of a container mobile in a preset coordinate system, after the communicating elements have been randomly placed in the container and attached on the internal surface of the container, wherein each of the communicating elements is equipped with a distance sensor, wherein the distance sensors acquire data representing distances between the respective communicating element and the other communicating elements, and wherein the position of each of the communicating elements on the internal surface of the container is determined from a known geometry of the container and from data delivered by the communicating elements taking into account the data representing the distances between the communicating elements acquired by the sensors, and
an element for tracking the location of the communicating elements in the preset coordinate system while the container is m

Assignees

• Commissariat Energie Atomique

Inventors

• Carmona Mikaël
• Blanpain Roland

Classifications

• G01S1/72 Primary

  using ultrasonic, sonic or infrasonic waves · CPC title

• G01S5/14 Primary

  Determining absolute distances from a plurality of spaced points of known location · CPC title

• G01S11/14

  using ultrasonic, sonic or infrasonic waves · CPC title

• G01P15/00

  Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration · CPC title

• B28C5/422

  Controlling or measuring devices (B28C5/4227 takes precedence) · CPC title