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Method for maintaining oscillations of vibrating device and vibrating device for implementing same method

A kind of vibration equipment and equipment technology, which is applied in vibration equipment and other silent alarms, clocks, and vibration maintenance fields of vibration equipment, which can solve the problems of energy waste and reduce the output of excitation devices, etc.

Inactive Publication Date: 2005-07-13
ETA SA MFG HORLOGERE SUISSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These variations reduce the output of exciters designed to operate at a fixed frequency and result in significant energy wastage

Method used

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  • Method for maintaining oscillations of vibrating device and vibrating device for implementing same method
  • Method for maintaining oscillations of vibrating device and vibrating device for implementing same method
  • Method for maintaining oscillations of vibrating device and vibrating device for implementing same method

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Embodiment Construction

[0029] In a preferred embodiment, the device according to the invention comprises structural elements similar to those disclosed in the above-mentioned European patent application EP 0 625 738 . It thus comprises a housing (not shown), a moving mass (not shown) within the housing, for transmitting vibrations to the housing, and coils electromagnetically coupled to the moving mass.

[0030] This coil is shown schematically in FIG. 1 and is designated with the reference symbol L. In FIG. Depending on the state of the four transistors Q1, Q2, Q3 and Q4, the first terminal B1 and the second terminal B2 of the coil can be set to zero voltage (ground V SS ) or voltage V BAT .

[0031] The four transistors Q1, Q2, Q3 and Q4 form an H-bridge circuit for controlling the vibration device in a bipolar manner. The H-bridge circuit includes first and second branches, respectively comprising transistors Q1 and Q2 and transistors Q3 and Q4, mounted in series at a voltage V BAT and V SS ...

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PUM

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Abstract

A method for maintaining vibration of a vibrating device and a vibrating device implementing the method are disclosed. The vibrating device is intended to be mounted on a device carried close to the human body such as a clock, and includes a housing, a moving mass inside the housing that transmits vibrations to the housing, a coil (L) that is electromagnetically coupled with the moving mass so as to cause it to vibrate, and exciting the coil (L) Excitation circuit. According to this method, alternating polarities and specific durations (T pulse ) driving pulse (21,22), the polarity and duration are related to the motion induced voltage (U ind , V B12 ) are basically the same. Each drive pulse (21, 22) at a specified constant time interval (T to-pulse ) generated at the end of the interval is considered to be induced from the motion of the voltage (U ind , V B12 ), the time interval (T from-pulse ) is determined by the instantaneous natural oscillation frequency of the vibration device, so as to perform frequency adaptation, at which frequency said drive pulses (21, 22) are generated.

Description

technical field [0001] The present invention relates generally to vibrating devices and other silent alarms for mounting on devices carried close to the body, such as clocks. More particularly, the present invention relates to a method of maintaining oscillation of a vibrating device and a vibrating device implementing the same. Background technique [0002] In many situations it is useful to be able to communicate information to a person without auditory or visual means. This is especially the case when one wishes to secretly warn one of a group of people. Such information-transmitting tactile devices offer an advantageous alternative to vibrating a device such as a watch that one carries with one's body to locally stimulate the skin to indicate the occurrence of a specific time or event (message, phone call or appointment, etc.) arrive). Such means of tactile information delivery may be in devices used to indicate the occurrence of time, alarms or other events to person...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04G13/02H02K33/16G04G99/00B06B1/04
CPCG04G13/021H03B5/00
Inventor S·罗塔S·屈恩茨
Owner ETA SA MFG HORLOGERE SUISSE