Wristwatch Piezoelectric Oscillator Frequency Customization
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Solution Overview
Problem
Existing wristwatches with quartz clocks lack individualization and high-quality perception, as they often use standardized swing frequencies and materials, limiting customization and perceived value.
Innovation Solution
A wristwatch design that incorporates a piezoelectric swing crystal with a pulse counter and output device, allowing for the use of non-standardized piezoelectric vibration crystals with unique frequencies, and providing a user signal based on a predetermined counting value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a standardized quartz oscillator with fixed oscillation frequency of 32,768 Hz is used, then the wristwatch achieves high timing accuracy and compact design, but the wristwatch lacks individualization and is perceived as a mass product
Solution Approach 1:
The patent changes the key parameter from fixed oscillation frequency to variable oscillation frequency. Instead of using a standardized quartz oscillator with fixed frequency of 32,768 Hz, the invention uses a piezoelectric oscillating crystal whose oscillation frequency can be individually adjusted. This allows each wristwatch to have a unique frequency parameter, enabling customization while maintaining timing accuracy through the fundamental piezoelectric oscillation mechanism.
Solution Approach 2:
The patent introduces dynamic adjustability to the previously static oscillation frequency. The piezoelectric oscillating crystal can be individually tuned to different frequencies, and the wristwatch includes adjustment mechanisms that allow the frequency parameter to be modified. This dynamic capability transforms the standardized mass-product into a customizable individualized timepiece while preserving the compact quartz-watch design.
2Volume of moving object
If standardized quartz oscillators are used with fixed oscillation frequency, then the wristwatch achieves compact design and long power reserve, but the effort required to individually tune other oscillating crystals to a base frequency divisible by two would be enormous
Solution Approach 1:
The patent makes the oscillating crystal self-adjusting through the piezoelectric effect. The piezoelectric oscillating crystal inherently maintains its oscillation frequency through the piezoelectric mechanism, eliminating the need for complex external tuning procedures. The crystal's own piezoelectric properties enable it to self-regulate its oscillation, vastly simplifying manufacturing compared to manually tuning each crystal to a specific frequency.
Solution Approach 2:
The patent replaces the mechanical tuning process with an electrically controlled piezoelectric system. Instead of mechanically adjusting each crystal's physical dimensions to achieve the desired frequency, the invention uses electrical signals through the piezoelectric effect to control and adjust the oscillation frequency. This substitution of mechanical adjustment with electrical control dramatically reduces the tuning effort required during manufacturing.
3Adaptability or versatility
If natural vibrating crystals with varying chemical composition are used, then the wristwatch can be individually customized, but the vibrating frequency varies slightly depending on chemical composition, making standardization difficult
Solution Approach 1:
The patent implements a feedback mechanism where the actual oscillation frequency of the piezoelectric crystal is measured and compared against the target frequency. Based on this feedback, the system automatically adjusts the frequency to achieve the desired value. This closed-loop control compensates for variations in chemical composition and ensures consistent frequency output across different natural crystals, reconciling customization with manufacturing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables a high-quality, individually customizable wristwatch with precise user signals, while maintaining the accuracy and compactness of quartz watches, and accommodating a wide range of piezoelectric materials and frequencies.
Implementation Method 1
The first clock generator (1) comprises a piezoelectric oscillating crystal and is configured to generate a clock signal
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a wristwatch (100) with a clock generator assembly (10). The clock generator assembly (10) comprises a first clock generator (1), a pulse counter (2), and an output device (3). The first clock generator (1) comprises a piezoelectric vibrating crystal and is designed to generate a clock signal. The pulse counter (2) is designed to count the clock signal of the first clock generator (1), wherein the output device (3) is designed to output a useful signal if a count value of the counted clock signal of the first clock generator (1) equals a specified count value.