What is a quartz clock?

2021-08-03 23:45

What is a quartz clock?

The quartz clock is a timed appliance. Everyone is familiar with the clock, it is a kind of timepiece that gives us time. In daily life, the clock is accurate to 1 second, which is enough. But in many fields of scientific research or engineering technology, the requirements for the hour are much higher. Quartz clocks are created according to this need. Its main component is a very stable quartz oscillator. The oscillation frequency generated by the quartz oscillator is taken out. Let it drive the clock to indicate the time. This is the quartz clock. At present, the best quartz clock, the daily timing can be as high as one hundred thousandth of a second, that is, after almost 270 years, it is only one second. But today, scientifically developed, this quartz clock has been replaced by other types of clocks (such as radio meters) that are much more precise than it.

Radio clocks, also known as radio control clocks (English name: Radio controlled timepieces). The technical principle of the radio-controlled timepiece as a system is: First, the standard time signal is encoded by the standard time-time center (commercial code is encrypted), and the time signal is broadcasted by radio long-wave using the low-frequency (20KHz-80KHz) carrier method. go with. The radio timepiece receives the low frequency radio time code signal through the built-in micro radio receiving system, and the time code signal is demodulated by the dedicated integrated chip, and the timing of the timepiece is automatically adjusted by the control mechanism provided in the timing device. Through such a technical process, all the timepieces (or other timing devices) that receive the standard time signal are kept in high synchronization with the standard time of the standard time timing center, and all the radio timepieces display a strictly consistent time. The working principle of the electronic clock is designed according to the physical phenomenon of "electric magnetism, magnetoelectricity". That is, the electric energy is converted into magnetic energy, and then the magnetic energy is converted into mechanical energy, and the hour and minute hands are driven to achieve the purpose of timing.

1. Transistor balance clock The dry battery is used as the energy source, the transistor is used as the switch, the balance spring is the oscillation system, and the unified movement is J1 type, and the shape is the same as the ordinary alarm clock.

2. The crystal alarm clock has the same performance as the transistor balance clock, plus a time-consuming device powered by electric energy.

3. Transistor pendulum clock The electronic circuit is used to control the pendulum as an oscillating component, and its shape is similar to that of a mechanical pendulum clock

4, quartz clock "quartz crystal" as an oscillator, through the electronic crossover to control the motor operation, drive the pointer. The travel time is very accurate. There are various clocks such as clocks, wall clocks, calendar clocks, alarm clocks, music clocks, and floor clocks. There are also various technical clocks such as car clocks, ship clocks, and astronomical clocks.

5, digital clock also uses quartz crystal as an oscillator, directly using the light tube or liquid crystal display time, without mechanical transmission. It has various functions such as hour, minute, second, calendar, weekly calendar and monthly calendar.

6. Electronic watch The battery is used as energy instead of the spring. It does not need the hand string. It has various structures and the same shape as the mechanical watch. It is collectively called the electronic watch. According to the structure and the invention, the electronic watch is divided into four generations:

The first generation is a balance spring electronic watch, which uses a balance spring as an oscillator and uses a miniature battery as an energy source to drive the balance wheel through an electronic circuit.

The second generation is a tuning fork electronic watch, which uses a metal tuning fork as an oscillator to output a pulse current through an electronic circuit to vibrate the mechanical tuning fork.

The third generation is a pointer type quartz electronic watch, which uses a quartz resonator as an oscillator, and drives the stepping motor to drive the train wheel and the pointer through the electronic frequency divider.

The fourth generation is a digital quartz electronic watch, which also uses a quartz resonator as an oscillator, except that it is frequency-divided, counted, and decoded to display time in digital form using a display device. The first three generations of electronic watches have a traditional mechanical pointer mechanism, while the fourth generation uses large-scale integrated circuits, completely out of the traditional mechanical structure of the all-electronic watch. Different types, different principles, but never change.

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