CN217932444U - Liquid crystal clock without time adjustment - Google Patents
Liquid crystal clock without time adjustment Download PDFInfo
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- CN217932444U CN217932444U CN202221857614.8U CN202221857614U CN217932444U CN 217932444 U CN217932444 U CN 217932444U CN 202221857614 U CN202221857614 U CN 202221857614U CN 217932444 U CN217932444 U CN 217932444U
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- crystal clock
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Abstract
The utility model discloses a liquid crystal clock without time adjustment, which comprises an MCU, a display screen and an MCU standby power supply, wherein the MCU is respectively electrically connected with the display screen and the MCU standby power supply; the MCU standby power supply is an independent power supply and continuously supplies power to the MCU, so that the MCU can continuously run for a long time; the MCU is connected with a display screen switch or a power-on key, and when the display screen switch or the power-on key is turned on, the display screen can synchronously display the correct time of the MCU. The MCU standby power supply is installed, the MCU standby power supply plays a role in continuously supplying power to the MCU, during the circuit board test, the MCU is burnt in the correct local time, so no matter how long the MCU standby power supply is electrified, the MCU always operates, when the screen is started or opened, the correct local time is displayed on the screen, and the MCU is convenient and practical when the MCU standby power supply is free from being adjusted. The function is various, the practicality is strong.
Description
Technical Field
The utility model relates to a clock technical field, the more specifically liquid crystal clock when exempting from to transfer that says so.
Background
The conventional liquid crystal clock has only a default time when it is shipped from a factory, but the default time is not an actual time. Therefore, the customer needs to adjust the time and the date after buying the battery and installing the battery. However, the existing timing mode can only adjust the timing manually, which is tedious and causes much chagrin for some people with insufficient manual operation capability. When the power supply is dead next time, the battery is replaced or the time needs to be reset after charging, which is quite troublesome.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned defects of the prior art, the utility model provides a exempt from liquid crystal clock when transferring.
In order to achieve the above object, the utility model provides a following technical scheme:
a liquid crystal clock without time adjustment comprises an MCU, a display screen and an MCU standby power supply, wherein the MCU is respectively and electrically connected with the display screen and the MCU standby power supply; the MCU standby power supply is an independent power supply and continuously supplies power to the MCU, so that the MCU can continuously run for a long time; the MCU is connected with a display screen switch or a start-up key, and when the display screen switch or the start-up key is turned on, the display screen can synchronously display the correct time of the MCU.
The MCU is connected with a power supply through a voltage stabilizing circuit, and the power supply is an internal lithium battery or an external dry battery.
The MCU synchronously records the date; before leaving the factory, the correct date or time is burned into the MCU.
The MCU standby power supply is a button cell.
The MCU is connected with a thermosensitive sensor, a humidity-sensitive sensor, a touch backlight circuit and a loudspeaker.
The MCU is connected with a human body sensor, and can automatically turn on the backlight when a human body approaches.
MCU is connected with the keypad, and the keypad passes through data line connection key group and charging circuit, charging circuit is including charging IC and charging socket.
The MCU is connected with a crystal oscillator.
Also comprises a negative ion generator and a humidifier.
And the automatic timer is also provided with an integral time reporting function and a function of displaying a second time zone.
The utility model discloses a technological effect and advantage:
1. the MCU standby power supply is installed, the MCU standby power supply plays a role in continuously supplying power to the MCU, during the circuit board test, the MCU is burnt in the correct local time, so no matter how long the MCU standby power supply is electrified, the MCU always operates, when the screen is started or opened, the correct local time is displayed on the screen, and the MCU is convenient and practical when the MCU standby power supply is free from being adjusted.
2. The function is various, the practicality is strong.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
fig. 2 is a schematic diagram of a key set and a charging circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The time-adjustment-free liquid crystal clock as shown in fig. 1 and fig. 2 comprises an MCU, a display screen and an MCU standby power supply, wherein pins (2-17, 20-35) of the MCU are connected with the display screen; a pin 47 of the MCU is connected with a positive pin 45 of the MCU standby power supply to serve as a power supply negative electrode, the MCU standby power supply is an independent power supply and continuously supplies power to the MCU, so that the MCU can continuously run for a long time; the MCU is connected with a display screen switch or a start-up key, and when the display screen switch or the start-up key is turned on, the display screen can synchronously display the correct time of the MCU.
Furthermore, a pin 47 of the MCU is connected to a power supply through a voltage regulator circuit, and the power supply is a built-in 14500 lithium battery.
Further, the MCU synchronously records the date; before leaving the factory, the correct date or time is burned into the MCU.
Further, the MCU standby power supply is a 2032 button cell.
Further, the MCU pins 18 and 19 are respectively connected with a thermosensitive sensor and a humidity sensor through 1 muF capacitors (C12 and C13); the display of the display screen on the temperature and the humidity is realized.
Further, the MCU pin 41 is connected to the touch backlight circuit; the touch backlight circuit is connected with a touch backlight switch.
The MCU pin 42 is connected to the horn through a 1k resistor R4 and an S8050 transistor Q3 and a 100nF capacitor C1.
The MCU is connected with a human body sensor, and can automatically turn on the backlight when a human body approaches.
The MCU pins 36-39 are connected to a keypad, and the keypad CON3 (port 1-6) is connected to the keypad and the slot CON1 (port 6-1) of the charging circuit via a data line, as shown in fig. 2, the charging circuit includes a charging IC and a charging socket. Charging socket is Type-C, and Type-C connects MCU pin 40. The 3 mouths of the key board CON3 are set, the 4 mouths are turned on or turned on, the 5 mouths are turned off or turned off, and the 6 mouths are alarm clocks.
Furthermore, pins 1 and 48 of the MCU are connected with a 32.768K crystal oscillator to provide a vibration function.
The timing-free principle of the technology is as follows:
the button cell is arranged on the circuit board and plays a role of continuously supplying power to the MCU, and the correct local time is burnt into the MCU during the test of the circuit board, so that the MCU always operates no matter how long the circuit board is used, as long as the button cell is electrified, and when the circuit board is started or a screen is opened, the correct local time is displayed on the screen. And after the power of the product is cut off, the button battery is switched to supply power to the MCU through the MOS tube, so that the MCU can work normally, and the time after the power failure of the product can be normal.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A time-free liquid crystal clock is characterized in that: the MCU is respectively and electrically connected with the display screen and the MCU standby power supply; the MCU standby power supply is an independent power supply and continuously supplies power to the MCU, so that the MCU can continuously run for a long time; the MCU is connected with a display screen switch or a start-up key, and when the display screen switch or the start-up key is turned on, the display screen can synchronously display the correct time of the MCU.
2. The time-free liquid crystal clock of claim 1, wherein: the MCU is connected with a power supply through a voltage stabilizing circuit, and the power supply is an internal lithium battery or an external dry battery.
3. The time-free liquid crystal clock of claim 1, wherein: the MCU synchronously records date.
4. The time-free liquid crystal clock of claim 1, wherein: the MCU standby power supply is a button cell.
5. A time-free liquid crystal clock as defined in claim 1, wherein: the MCU is connected with a thermosensitive sensor, a humidity-sensitive sensor, a touch backlight circuit and a loudspeaker.
6. The time-free liquid crystal clock of claim 1, wherein: the MCU is connected with a human body sensor, and can automatically turn on the backlight when a human body approaches.
7. The time-free liquid crystal clock of claim 1, wherein: the MCU is connected with a key board, the key board is connected with a key group and a charging circuit through a data line, and the charging circuit comprises a charging IC and a charging socket.
8. The time-free liquid crystal clock of claim 1, wherein: the MCU is connected with a crystal oscillator.
9. The time-free liquid crystal clock of claim 1, wherein: also comprises a negative ion generator and a humidifier.
10. The time-free liquid crystal clock of claim 1, wherein: and the automatic timer is also provided with an integral time reporting function and a function of displaying a second time zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221857614.8U CN217932444U (en) | 2022-07-19 | 2022-07-19 | Liquid crystal clock without time adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221857614.8U CN217932444U (en) | 2022-07-19 | 2022-07-19 | Liquid crystal clock without time adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217932444U true CN217932444U (en) | 2022-11-29 |
Family
ID=84189836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221857614.8U Active CN217932444U (en) | 2022-07-19 | 2022-07-19 | Liquid crystal clock without time adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217932444U (en) |
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2022
- 2022-07-19 CN CN202221857614.8U patent/CN217932444U/en active Active
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