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Modulation device and method of quartz tuning fork

A technology of quartz tuning fork and modulation method, which is applied in the direction of adjustment devices, clocks, instruments, etc., and can solve problems such as the decrease of the quality factor of the tuning fork resonator, the instability of the frequency of the resonance system, and the inability to completely match the vibration parameters of the two arms of the tuning fork, etc.

Pending Publication Date: 2022-05-27
BEIJING CHENJING ELECTRONICS
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  • Abstract
  • Description
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Problems solved by technology

[0003] However, due to the limitations of machining accuracy and material uniformity, the vibration parameters of the two arms of the tuning fork cannot be completely consistent, and the mutual balance of the vibration force and moment of the two fork arms required in principle cannot be fully realized. It will be affected by force and moment, causing the base of the tuning fork to vibrate, which will not only cause the frequency instability of the resonance system, but also inevitably lead to the loss of vibration energy, which will reduce the quality factor of the tuning fork resonator and increase the equivalent resistance.

Method used

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  • Modulation device and method of quartz tuning fork

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Embodiment Construction

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are intended to illustrate the present invention, but not to limit the scope of the present invention.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right" , "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing this Inventive embodiments and simplified descriptions are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limitin...

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Abstract

The invention relates to the technical field of modulation of quartz tuning forks, and provides a device and a method for modulating a quartz tuning fork. The modulation device of the quartz tuning fork comprises a first detection circuit, a second detection circuit and a third detection circuit. By adopting the design of detecting the tuning fork electrode at the single end of the quartz tuning fork in a limited space, the tuning fork frequency at each end of the quartz tuning fork can be detected, and accurate modulation can be realized; the tuning fork frequencies at the two ends of the quartz tuning fork can be modulated together, the resonance frequency precision and the high Q value of the quartz tuning fork are guaranteed, and the quality of the quartz tuning fork is improved.

Description

technical field [0001] The invention relates to the technical field of modulation of quartz tuning forks, in particular to a modulation device and method for quartz tuning forks. Background technique [0002] The quartz tuning fork vibrator is the heart part of the quartz electronic watch. Its performance directly affects the quality of the quartz electronic watch. There are many technical indicators required for quartz tuning forks, among which the quality factor Q and the equivalent resistance R are one of the main indicators of the quartz oscillator, and the unbalance of the quartz tuning fork is the main factor affecting the quality factor and equivalent resistance. Quartz tuning fork vibrator utilizes the principle that the vibration force and moment of two opposing fork arms balance each other at any instant of vibration to eliminate the effect of the force and moment of the resonator on the base, thereby ensuring the frequency accuracy and high frequency of the tuning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H9/215G04D7/00
CPCH03H9/215G04D7/003
Inventor 裴志强张琳琳张佳旭
Owner BEIJING CHENJING ELECTRONICS
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