Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
  • G01C22/00—Measuring distance traversed on the ground by vehicles, persons, animals or other moving solid bodies, e.g. using odometers, using pedometers
  • G01C22/006—Pedometers

Definitions

• the object of the present invention is in the field of measuring devices, and in particular in the field of measuring devices of the type for example pedometer.
• the object of the present invention is to provide a calibration method for calibrating a measuring device; calibration of the measuring device according to the present invention provides a reliable device capable of providing an accurate estimate of the distance actually traveled by a user for a period of time.
• the term "measurement device” is intended to mean all types of device capable of counting the number of steps.
• the measuring devices within the meaning of the present invention, there are included the so-called conventional pedometers, the “step-watch” and the so-called “speed & distance” measuring systems, or the USB-pedometer keys.
• the so-called conventional pedometers there are included the so-called conventional pedometers, the “step-watch” and the so-called “speed & distance” measuring systems, or the USB-pedometer keys.
• Pedometers of the state of the art are generally adapted to provide a more or less accurate estimate of the distance actually traveled by an individual during a period of time.
• the walking frequency is measured by the pedometer using specially adapted means that do not here the object of the present invention.
• these means can be any type of sensor that can detect a relative kinematic change of the system such as for example the conventional technologies of pedometers called “hammer” or means of analysis of relative motion as piezoelectric technologies, accelerometric, magnetometric , or gyrometric.
• a relative kinematic change of the system such as for example the conventional technologies of pedometers called "hammer” or means of analysis of relative motion as piezoelectric technologies, accelerometric, magnetometric , or gyrometric.
• the pedometer in order to accurately estimate the distance traveled, the pedometer must also know the value relative to the step length.
• this value is equal to a fixed length: 1 meter for example.
• This solution consists first of all in measuring a distance, for example a distance of 10 meters. It is then necessary to walk this distance on foot, and to count the number of steps made during this journey, for example 14 steps. Finally, it is necessary to divide the distance traveled in relation to the number of steps actually taken over this distance.
• the Applicant submits, however, that this calibration process is very tedious, and can lead to errors due in particular to the count of the number of steps, the evaluation of the reference distance, or the short length of the distance traveled.
• the pedometer will be able to recalculate the step length to improve the prediction as the user uses his pedometer.
• This intelligent solution therefore allows only an estimate of the value of the step length by learning. In any case, it does not allow a single calibration step that provides a reliable device.
• the Applicant observes a manifest defect in the method of measuring device calibration.
• the object of the present invention is to provide a simple and effective solution to the aforementioned problems among other problems, cost and manufacturing issues obviously being considered in the subject of the present invention.
• One of the technical problems that the object of the present invention solves therefore consists in proposing a solution aiming at a simple, almost automatic and precise calibration of a measuring device.
• the object of the present invention relates to a method for calibrating a measuring device of the type for example a pedometer, the measuring device according to the present invention being able to estimate the distance actually traveled by an individual during a period of time. fixed time.
• the calibration method according to the present invention comprises the following steps:
• an input step consisting in entering at least one physiological datum comprising information relating to the physiology of the individual (preferably this information is known), and
• This succession of technical steps, characteristic of the present invention, allows a simple calibration of the measuring device so that the latter is able to provide an accurate estimate of the distance actually traveled.
• the physiological data input includes information relating to the stature of the individual. It is observed that, generally, this information is known.
• the step length, noted here L_step, which is calculated during the calculation step is obtained by the following formula:
• L_step (0.4389 ⁇ ⁇ ⁇ ) x DATA + (0.0246 ⁇ ⁇ 2)
• DATA is the physiological data input
• ⁇ is a first tolerance index
• ⁇ 2 is a second tolerance index.
• the first tolerance index ⁇ ⁇ is less than or equal to 0.026 and the second tolerance index ⁇ 2 is less than or equal to 0.0588.
• the object of the present invention relates to a computer program including instructions adapted for performing the steps of the calibration method as described above, especially when said program is executed by a computer or any other system. equivalent.
• Such a computer program can use any programming language, and be in the form of a source code, an object code, or an intermediate code between a source code and an object code, such as in a partially compiled form, or in any other desirable form.
• the subject of the present invention relates to a computer-readable recording medium or any other equivalent system, on which is recorded a computer program comprising instructions for performing the steps of the calibration method according to the present invention.
• the recording medium can be any entity or device capable of storing the program.
• the medium may comprise storage means, such as a ROM, for example a CD-ROM or a microelectronic circuit-type ROM, or a magnetic recording means, for example a diskette of the type " floppy says "or a hard drive.
• this recording medium can also be a transmissible medium such as an electrical or optical signal, such a signal can be conveyed via an electric or optical cable, by conventional radio or radio or by self-directed laser beam or by other ways.
• the computer program according to the invention can in particular be downloaded to an Internet type network.
• the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to execute or to be used in the execution of the method in question.
• the object of the present invention also relates to a measuring device such as a pedometer able to estimate the distance actually traveled by an individual during a period of time.
• the measuring device comprises:
• - Input means configured to allow input of at least one physiological data comprising information relating to the physiology of an individual (preferably, this information is known);
• a first calculation means configured to allow the calculation of the step length of the individual as a function of the physiological data inputted.
• This combination of technical means, characteristic of the present invention allows the calibration of the measuring device so that the latter is able to provide an accurate estimate of the distance actually traveled.
• the physiological data comprises information relating to the stature of the individual.
• the first calculation means is configured to calculate the pitch length, noted here L_step, according to the following formula:
• DATA is the physiological data input
• ⁇ ⁇ is a first tolerance index
• ⁇ 2 is a second tolerance index
• the first tolerance index ⁇ ⁇ is less than or equal to 0.026 and the second tolerance index ⁇ 2 is less than or equal to 0.0588.
• the measuring device comprises a recording medium as described above, readable by the measuring device and on which is recorded a computer program comprising instructions for carrying out the steps of the method calibration as described above.
• the object of the present invention by its various functional aspects, its advantageous characteristics, and the implemented algorithm, overcomes the various drawbacks noted in the state of the art by allowing a calibration simple, quasi-automatic and accurate measurement device through a single entry of a physiological data comprising information relating to the physiology of the individual, this information being a priori known by said individual.
• a calibration simple, quasi-automatic and accurate measurement device through a single entry of a physiological data comprising information relating to the physiology of the individual, this information being a priori known by said individual.
• FIGS. 1 to 2 illustrate an example of embodiment that is devoid of any limiting character and on which:
• FIG. 1 shows a schematic view of a measuring device adapted to implement the steps of the calibration method according to a particular embodiment of the present invention.
• FIG. 2 is a flowchart showing schematically the various steps of the calibration method according to a particular embodiment of the present invention.
• Allowing an individual to be able to easily calibrate his measuring device is one of the objectives of the present invention.
• the object of the present invention relates to a method of calibrating a PODO measuring device capable of estimating the distance actually traveled by an individual during a period of time T.
• the PODO measuring device is a pedometer.
• any other measuring device within the meaning of the present invention can be envisaged.
• the pedometers of the state of technique require a tedious calibration during which it is necessary to perform many operations: to travel a given distance by counting the number of steps, then divide this distance traveled by the number of not counted to get an approximate value of the step length.
• the object of the present invention proposes to solve the various disadvantages encountered above with this kind of pedometers by proposing a simple solution in which the calibration requires the single entry of a single piece of information which is known a priori of its user. , and which allows an accurate estimate of the length of the user's step.
• the calibration method according to the present invention comprises an input step S0 in which, during the first use of the PODO pedometer, the user must grasp, by means of input MO, a physiological data DATA comprising known information relating to its physiology.
• the input means MO may consist of any type of manual input type keyboard, touchpad or other, or voice input means for entering and integration into the PODO pedometer this data DATA.
• the physiological data DATA preferably comprises information relating to the stature of the individual.
• stature in the sense of the present invention is meant the anthropomorphic definition of the term, namely the height or size of the individual.
• the user can also enter, for other purposes, other physiological data such as its weight, age, sex, etc., in order, for example, to be able to calculate the heat energy expended.
• other physiological data such as its weight, age, sex, etc.
• the PODO pedometer according to the present invention comprises a first calculation means Ml configured to allow, during a first calculation step S1, the calculation of the pitch length L_ step as a function of the physiological data entered DATA.
• the step length L_ not calculated during the calculation step S1 is obtained by the following formula:
• ⁇ 1 is a first tolerance index which is preferably less than or equal to 0.026
• ⁇ 2 is a second tolerance index which is preferably less than or equal to 0.0588.
• an individual A measuring 1.50 meters in height captures a DATA data equal to 1.50 meters during the input step S0.
• the calculation step SI described above returns a step length L_ step of a value of 0.68295 meters, or about 68.3 centimeters.
• an individual B measuring 1.90 meters of stature enters a data value equal to 1.90 meters during the input step S0.
• the calculation step SI returns a pitch length L_ step of a value of 0.85851 meter, or about 85.9 centimeters.
• the pedometer according to the present invention further comprises a recording medium CI readable by the measuring device PODO and on which is recorded a computer program PG comprising instructions for the execution of steps of the calibration method as described above.
• the object of the present invention is characterized by a simplification and automation of the calibration in order to estimate the more precise pitch length.

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• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• General Physics & Mathematics (AREA)
• Radar, Positioning & Navigation (AREA)
• Remote Sensing (AREA)
• Measurement Of Distances Traversed On The Ground (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

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Citations (2)

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• 2010
  • 2010-12-22 FR FR1061032A patent/FR2969756A1/fr not_active Withdrawn
• 2011
  • 2011-12-20 RU RU2013134011/28A patent/RU2013134011A/ru not_active Application Discontinuation
  • 2011-12-20 CN CN201180062400XA patent/CN103339475A/zh active Pending
  • 2011-12-20 EP EP11815454.1A patent/EP2656009A1/fr not_active Withdrawn
  • 2011-12-20 WO PCT/FR2011/053075 patent/WO2012085440A1/fr active Application Filing

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