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System and method for determining at least one parameter related to angular motion of a mandrel

A technology of angular motion and mandrel, applied to devices using optical methods, electric winding, electromechanical clocks, etc., can solve the problem of device power consumption, available space and energy constraints, and overall system size that affect the overall size of the processor problems with autonomy

Active Publication Date: 2022-02-11
THE SWATCH GRP RES & DEVELONMENT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, a disadvantage of the electro-optical device proposed in EP 3 015 925 A1 is that it generates a relatively long processing time for the processor due to the amount of data acquired
Therefore, the solution requires sufficient power for the processor, which affects both the overall size of the processor and the power consumption of the device
This can prove problematic for the overall size of the system and its autonomy, given that the available space and energy in a watch are particularly constrained

Method used

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  • System and method for determining at least one parameter related to angular motion of a mandrel
  • System and method for determining at least one parameter related to angular motion of a mandrel
  • System and method for determining at least one parameter related to angular motion of a mandrel

Examples

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Embodiment Construction

[0032] figure 1 A part of a watch 1 equipped with a time-setting crown 2 is shown. Crown 2 is coupled to arbor 4 which extends partly inside watch 1 , in particular inside the case. Watch 1 , for example a quartz watch, further comprises a system 6 for determining at least one parameter related to the angular movement of arbor 4 integral with crown 2 .

[0033] The mandrel 4 is able to rotate itself about the longitudinal direction D1. More precisely, when the user turns crown 2 to set the time, arbor 4 is driven to rotate itself about direction D1 . It is to be noted that crown 2 may optionally be configured to be pulled out and / or pushed in by the user, thereby driving arbor 4 in longitudinal translation. When the arbor 4 is assembled to the watch 1, as in Figure 1 to Figure 4 In the case of the illustrative example of , the diameter of the mandrel 4 is generally comprised in the range from 0.5 to 2 mm.

[0034] Such as figure 2 and image 3As illustrated in , in ad...

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Abstract

Systems and methods for determining at least one parameter related to angular motion of a mandrel. The system and method are arranged to determine the angular movement of an arbor integral with the crown of the watch, the arbor being able to rotate itself in a longitudinal direction. The system consists of a rotating reflector, and two emitter / detector pairs. Each emitter / detector pair includes a light source and a light detector, and a processor for processing electrical signals generated by the detectors and for determining parameters related to the angular motion of the mandrel. The rotating reflector has a shape such that when the reflector rotates itself in a regular manner, the Its visible outer surface changes so that when the reflector rotates itself in a regular manner in the same direction of rotation, the representative electrical signal generated by the detectors of the pair has a substantially sinusoidal shape.

Description

technical field [0001] The present invention relates to systems and methods for determining at least one parameter related to the angular motion of a self-rotating mandrel. Such parameters are for example the angular orientation or the rotational speed or the rotational direction of the spindle. [0002] The invention also relates to a timepiece comprising a determination system. The timekeeping device is, for example, a quartz watch, and the arbor is then a stem integral with the time-setting crown. Background technique [0003] It is known to provide a watch, such as a quartz watch, with an electronic crown by means of which the user can set the time, and thus the orientation of the hands, without contact with the watch's gear train. In order to do this, electronic or optical or electro-optical devices are arranged inside the watch, which make it possible to determine one or more parameters related to the angular movement of the arbor integral with the crown and thus pos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04D7/00G04D7/12
CPCG04D7/002G04D7/004G04D7/12G01D5/3473G04C3/001G01P3/36G04B9/005
Inventor P.托尔托拉V.扎尼斯克
Owner THE SWATCH GRP RES & DEVELONMENT LTD