Radio controlled timepieces, also known as wireless controlled timepieces (English name: Radio controlled timepieces). The technical principle of a radio-controlled clock as a system is: first, the standard time timing center encodes the standard time signal (the commercial code is encrypted), and uses a low-frequency (20KHz-80KHz) carrier wave method to transmit the time signal as a long-wave radio go. The radio-controlled timepiece receives the low-frequency radio time code signal through the built-in micro radio receiving system, demodulates the time code signal by a dedicated integrated chip, and then automatically adjusts the timing of the clock by the control mechanism built into the timing device. Through such a technical process, all clocks (or other timing devices) that receive the standard time signal are highly synchronized with the standard time of the standard time timing center, and all radio-controlled clocks display strictly consistent time. The working principle of electronic clocks is designed based on the physical phenomenon of "electricity generates magnetism and magnetism generates electricity". That is, electrical energy is converted into magnetic energy, and then magnetic energy is converted into mechanical energy to drive the hour and minute hands to achieve the purpose of timing.
1. Transistor balance clock uses dry batteries as energy source, transistors as switches, and balance springs as oscillation systems. The unified movement is J1 type, and its appearance is the same as that of an ordinary alarm clock.
2. The crystal alarm clock has the same performance as the transistor balance clock, plus an alarm device powered by electric energy.
3. Transistor pendulum clock uses an electronic circuit to control the pendulum as an oscillating component, and its appearance is similar to a mechanical pendulum clock.
4. Quartz clock uses "quartz crystal" as an oscillator, and uses electronic frequency division to control the operation of the motor and drive the pointer. The travel time accuracy is very high. The varieties include table clocks, wall clocks, calendar clocks, alarm clocks, musical clocks, floor clocks, as well as various technical clocks such as car clocks, ship clocks, and astronomical clocks.
5. Digital display clocks also use quartz crystals as oscillators and directly use light-emitting tubes or liquid crystals to display the time without mechanical transmission. It has multiple functions such as hours, minutes, seconds, calendar, weekly calendar, monthly calendar, etc.
6. Electronic watches use batteries as energy instead of springs and do not need to be wound by hand. They have a variety of structures and have the same appearance as mechanical watches. They are collectively called electronic watches. According to the structure and the order of invention, electronic watches are divided into four types. Generation:
The first generation is a balance spring electronic watch, which uses a balance spring as an oscillator, a micro battery as an energy source, and drives the balance wheel through electronic circuits.
The second generation is the tuning fork electronic watch, which uses a metal tuning fork as an oscillator and uses an electronic circuit to output pulse current to make the mechanical tuning fork vibrate.
The third generation is an analog quartz electronic watch, which uses a quartz resonator as an oscillator and drives a stepper motor through an electronic divider to drive the wheel train and pointer.
The fourth generation is a digital quartz electronic watch, which also uses a quartz resonator as an oscillator. The difference is that it uses a display device to display the time in digital form after frequency division, counting and decoding. . The first three generations of electronic watches all have traditional mechanical pointer mechanisms, while the fourth generation uses large-scale integrated circuits, completely breaking away from the traditional mechanical structure of fully electronic watches. The types are different and the principles are different, but they remain the same.