LED multifunctional electronic clock

Abstract

An LED multifunctional electronic clock comprises an electronic clock body and a USB interface, and the electronic clock body can display function information of the electronic clock. The USB interface is fixedly arranged on the electronic clock main body and is electrically connected with the electronic clock main body; the USB interface can be inserted into the USB interface socket to take electricity and supply power to the electronic clock body so that the electronic clock body can work. The LED multifunctional electronic clock is provided with the USB interface, and the USB interface can be inserted into the USB interface socket to take electricity so as to supply power to the electronic clock main body, so that a battery does not need to be frequently replaced, and the LED multifunctional electronic clock can be conveniently used by being directly inserted into the USB interface socket. Besides, the electronic clock is provided with the light sensing unit which can detect the intensity of ambient light, so that the electronic clock main body can automatically adjust the display brightness of the LED display unit according to the intensity of the ambient light, the electronic clock main body can automatically adapt to the ambient light, the electronic clock is convenient to use, and the power consumption can be dynamically adjusted to reduce the power consumption. The utility model has the characteristics of simple structure, practical function and convenience in use, and has very strong practicability.

Description

LED Multifunctional Electronic Clock Technical Field

[0001] This utility model relates to the field of electronic clock technology, specifically an LED multi-functional electronic clock, and particularly to an LED multi-functional electronic clock that integrates multiple functions such as time, date, day of the week, ambient temperature, light-sensing dimming, and alarm clock. Background Technology

[0002] With the increasing popularity of smart home devices, electronic clocks, as common time display tools in daily life, are gradually incorporating more intelligent functions. Currently, most electronic clocks on the market rely on traditional batteries or external power adapters for power, and their functions are limited, typically only displaying the time and date, lacking features such as intelligent dimming, temperature display, and efficient energy management. Furthermore, existing electronic clocks have poor adaptability to ambient light intensity, displaying too much light at night, which can easily affect the user's sleep quality. Frequent battery replacements also cause inconvenience and resource waste. Therefore, there is an urgent need for an electronic clock that is powered via USB and features ambient light sensing, intelligent dimming, temperature display, and alarm clock functions. Summary of the Invention

[0003] To address the problems existing in the background technology, this utility model provides a multi-functional LED electronic clock that is powered by USB and can adjust the display brightness according to the ambient light intensity.

[0004] To address the aforementioned problems, this utility model provides an LED multifunctional electronic clock, characterized by comprising:

[0005] The main body of the electronic clock, which can display the functional information of the electronic clock;

[0006] A USB interface is fixedly mounted on the main body of the electronic clock and electrically connected to the main body of the electronic clock.

[0007] The USB interface can be inserted into a USB interface socket to draw power to the main body of the electronic clock so that the main body of the electronic clock can work.

[0008] Furthermore, the electronic clock body includes a circuit module, which comprises:

[0009] Main control unit

[0010] A temperature sensor unit, electrically connected to the main control unit, is used to detect the ambient temperature;

[0011] The LED display unit is electrically connected to the main control unit and is used to display functional information;

[0012] The USB power supply unit is connected between the USB interface and the main control unit and is used to supply power to the main control unit.

[0013] A light-sensing unit, electrically connected to the main control unit, is used to detect ambient light intensity;

[0014] The main control unit can adjust the brightness of the LED display unit according to the ambient light intensity detected by the light sensing unit to adapt to the ambient light.

[0015] Furthermore, it also has a button unit and a buzzer unit connected to the main control unit. The button unit has multiple adjustable function buttons for setting and inputting information on the LED multi-functional electronic clock. The buzzer unit includes at least one buzzer with adjustable volume, which can play sound according to the information output by the main control unit.

[0016] Furthermore, the temperature sensor unit includes a voltage divider resistor R1 and a thermistor RT. One end of the thermistor RT is grounded, and the other end is connected to the temperature data pin NTC of the main control unit and the voltage divider resistor R1, respectively. The other end of the voltage divider resistor R1 is connected to the voltage pin VDD of the main control unit. The main control unit can acquire the voltage of the temperature sensor unit after voltage division by the voltage divider resistor R1 and the thermistor RT through the temperature data pin NTC, and can obtain temperature data based on the voltage.

[0017] Furthermore, the light-sensing unit includes:

[0018] The photosensitive chip U2 can be accessed via I 2 The C interface communicates with the main control unit to transmit ambient light intensity data.

[0019] The filter capacitor C4 has one end grounded and the other end connected to the voltage pin VDD of the photosensitive chip U2. It is used to eliminate high-frequency noise and stabilize the operating voltage of the photosensitive chip U2.

[0020] Furthermore, the photosensitive unit also includes a current-limiting resistor R3, which is connected between the voltage pin VDD and the output pin LEDA of the photosensitive chip U2.

[0021] Furthermore, the USB power supply unit includes a step-down diode D1 and filter capacitors C5 and C6; the positive terminal of the step-down diode D1 is connected to the power pin VBUS of the USB interface, and the negative terminal is connected to the voltage pin VDD of the main control unit; one end of the filter capacitors C5 and C6 is grounded, and the other end is connected to the negative terminal of the step-down diode D1; the input voltage obtained by the USB interface from the USB interface socket is stepped down by the step-down diode D1 and then supplied to the main control unit for power supply.

[0022] Furthermore, the filter capacitor C5 has a capacitance of 4.7uF and is used for low-frequency filtering; the filter capacitor C6 has a capacitance of 0.1uF and is used for high-frequency decoupling.

[0023] Furthermore, the LED display unit includes several common cathode digital tubes, the cathodes of which are respectively connected to several digit selection pins of the main control unit, and the positive terminals of the light-emitting diode units of each digital tube are respectively connected to several segment selection pins of the main control unit to reuse the segment selection pins.

[0024] Furthermore, the LED display unit time-division multiplexes the bit selection pin.

[0025] This utility model discloses a multi-functional LED electronic clock equipped with a USB interface, which can be plugged into a USB socket to draw power for the clock body, thus eliminating the need for frequent battery replacements. It can be used conveniently simply by plugging it into the USB socket. Furthermore, this utility model's multi-functional LED electronic clock includes a light sensor unit that detects ambient light intensity. This allows the clock body to automatically adjust the brightness of the LED display unit according to the ambient light level, enabling it to automatically adapt to ambient light. This not only facilitates use but also dynamically adjusts power consumption to reduce power consumption. This utility model features a simple structure, practical functions, and ease of use, making it highly practical. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the principle of this utility model.

[0027] Figure 2 is a structural schematic diagram of this utility model.

[0028] Figure 3 is a circuit diagram of the USB power supply unit.

[0029] Figure 4 is a circuit diagram of the temperature sensor unit.

[0030] Figure 5 is a circuit diagram of the photosensitive unit.

[0031] Figure 6 is a circuit diagram of the LED display unit.

[0032] Figure 7 is a circuit diagram of the button unit.

[0033] Figure 8 is a circuit diagram of the buzzer unit.

[0034] Figure 9 is a circuit diagram of the main control unit.

[0035] The attached diagram shows: Electronic clock body 10, main control unit 11, temperature sensor unit 12, LED display unit 13, USB power supply unit 14, light sensor unit 15, button unit 16, buzzer unit 17, and USB interface 20. Detailed Implementation

[0036] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0037] As shown in Figures 1-9, the following embodiments are further explanations and supplements to this utility model, and do not constitute any limitation on this utility model.

[0038] This utility model discloses an LED multifunctional electronic clock, comprising an electronic clock body 10 and a USB interface 20. The electronic clock body 10 possesses basic electronic clock functions, displaying time, date, alarm clock, and other information. Furthermore, it can detect and display the ambient temperature in real time. The USB interface 20 is fixedly mounted on the electronic clock body 10 and electrically connected to it. The USB interface 20 can be inserted into a USB socket to draw power for the electronic clock body 10 to operate.

[0039] The LED multi-functional electronic clock of this application is powered by a USB interface 20 that is plugged into a corresponding USB socket, instead of the conventional battery power. It is plug-and-play, eliminating concerns about battery power. For example, it can be powered by plugging into a computer's USB socket or a mobile phone charger's USB socket. Since USB sockets are widely used, plugging into the USB interface 20 for power is very convenient, offering easy power supply and use, achieving the goal of immediate availability.

[0040] The USB interface 20 can be one of TYPE A, TYPE B, or TYPE C interfaces. In this embodiment, the USB interface 20 is a TYPE A standard interface.

[0041] The shape of the electronic clock body 10 can be set as needed. In this embodiment, the thermometer body and the USB interface 20 are formed into the shape of a USB flash drive. The USB interface 20 is located on the side of the electronic clock body 10 along its length, forming a "7" shape, which can be easily plugged into an existing USB interface socket.

[0042] The main body 10 of the electronic clock is provided with an outer shell, and the outer shell contains a main control unit 11, a temperature sensing unit, an LED display unit 13, a USB power supply unit 14 and a light sensing unit 15.

[0043] The temperature sensing unit is electrically connected to the main control unit 11 and is used to detect the temperature in real time.

[0044] The LED display unit 13 is electrically connected to the main control unit 11 and is used to display the functional information of the electronic clock, such as ambient temperature, date, time, alarm clock, etc., under the control of the main control unit 11.

[0045] The USB interface 20 is electrically connected to the main control unit 11 through the USB power supply unit 14, thereby supplying power to at least the main control unit 11.

[0046] Furthermore, the USB power supply unit 14 includes a step-down diode D1 and filter capacitors C5 and C6. The positive terminal of the step-down diode D1 is connected to the power supply pin VBUS of the USB interface 20, and the negative terminal is connected to the voltage pin VDD of the main control unit 11; the D+ and D- pins of the USB interface 20 are left floating, and the GND pin is grounded. One end of each of the filter capacitors C5 and C6 is grounded, and the other end is connected to the negative terminal of the step-down diode D1; the input voltage obtained by the USB interface 20 from the USB interface socket is stepped down by the step-down diode D1 and then supplied to the main control unit 11 for power supply.

[0047] The step-down diode D1 also prevents reverse connection damage to the circuit. Capacitors C5 and C6 suppress power supply noise and ensure accurate sampling by the temperature sensing unit.

[0048] Furthermore, the filter capacitor C5 has a capacitance of 4.7uF and is used for low-frequency filtering; the filter capacitor C6 has a capacitance of 0.1uF and is used for high-frequency decoupling.

[0049] Furthermore, the light sensing unit 15 includes a light sensing chip U2 and a filter capacitor C4.

[0050] The light-sensing chip U2 can be accessed via I 2 The C interface communicates with the main control unit 11 to transmit ambient light intensity data. One end of the filter capacitor C4 is grounded, and the other end is connected to the voltage pin VDD of the photosensitive chip U2. It is used to eliminate high-frequency noise and stabilize the operating voltage of the photosensitive chip U2. When the main control unit 11 receives the ambient light intensity data transmitted by the photosensitive chip U2, it can control the brightness of the LED display unit 13 so that the brightness of the LED display unit 13 changes with the ambient light intensity. For example, when the ambient light intensity is high, such as during the day, the brightness of the LED display unit 13 is increased; when the ambient light intensity is low, such as at night, the brightness of the LED display unit 13 is decreased. This allows the brightness of the LED display unit 13 to adapt to changes in ambient light intensity, thus enabling adaptive adjustment without manual adjustment. This not only makes it convenient for users but also reduces power consumption.

[0051] In this embodiment, the light sensor chip U2 communicates with the main control unit 11 via the SDA and SCL interfaces to transmit ambient light intensity data. Furthermore, the INT, LDR, and NC interfaces of the light sensor chip U2 are left floating.

[0052] Furthermore, the photosensitive unit 15 also includes a current-limiting resistor R3, which is connected between the voltage pin VDD and the output pin LEDA of the photosensitive chip U2. The current-limiting resistor R3 is used to protect the photosensitive chip U2 from overcurrent damage.

[0053] The voltage pin VDD of the photosensitive chip U2 is connected to the voltage pin VDD of the main control unit 11.

[0054] Furthermore, the temperature sensor unit 12 includes a voltage divider resistor R1 and a thermistor RT. One end of the thermistor RT is grounded, and the other end is connected to the temperature data pin NTC of the main control unit 11 and the voltage divider resistor R1. The other end of the voltage divider resistor R1 is connected to the voltage pin VDD of the main control unit 11. The main control unit 11 can acquire the voltage of the temperature sensor unit 12 after voltage division by the voltage divider resistor R1 and the thermistor RT through the temperature data pin NTC, and can obtain temperature data based on the voltage.

[0055] Once the main control unit 11 obtains the voltage after voltage division through the temperature data pin NTC, it can perform analog-to-digital conversion on the data and then calculate the corresponding temperature value.

[0056] Furthermore, the LED display unit 13 includes several common cathode digital tubes, the cathodes of which are respectively connected to several digit selection pins of the main control unit 11, and the positive terminal of the light-emitting diode unit of each digital tube is respectively connected to several segment selection pins of the main control unit 11 to reuse the segment selection pins.

[0057] Furthermore, the bit selection pin is time-division multiplexed.

[0058] In this embodiment, the LED display unit 13 includes four common-cathode digital tubes (digital tubes composed of 1A-1G, 2A-2G, 4A-4G, and 5A-5G). Their cathodes are connected to the digit selection pins COM1, COM2, COM1, COM2, and COM3 of the main control unit 11, respectively. The positive terminal of the light-emitting diode unit of each digital tube is connected to the seven segment selection pins A, B, C, D, E, F, and G of the main control unit 11, thus multiplexing the segment selection pins. Specifically, the digital tubes composed of 1A-1G and 4A-4G share the digit selection pin COM1 in a time-division multiplexing manner, and the digital tubes composed of 2A-2G and 5A-5G share the digit selection pin COM2 in a time-division multiplexing manner, thereby reducing the number of pins.

[0059] In addition, the LED display unit 13 also includes several light-emitting diodes, such as 3A, 3B, 3C, 3D, and 3E, whose cathodes are connected to the same bit selection pin, such as the bit selection pin COM3, and whose anodes are respectively connected to multiple segment selection pins of the main control unit 11, such as segment selection pins A, B, C, D, and E.

[0060] The LED display unit 13 is used to display information such as time, date, day of the week, alarm clock, and temperature. The specific display format can be set as needed. In this application, a 4-digit LED display is used to display 4 digits of time, namely 2 digits for hours and 2 digits for minutes. When the function display is switched via buttons, the 4-digit LED display is used to display temperature data. The temperature unit, alarm clock symbol, etc., are indicated by light-emitting diodes, such as 3A, 3B, 3C, 3D, and 3E.

[0061] During operation, the main control unit 11 can cycle through and activate the bit selection pins COM1, COM2, and COM3 at a set frequency. During each activation cycle of the bit selection pins, the main control unit 11 outputs the corresponding segment code data through the segment selection pins A, B, C, D, E, F, and G, achieving a stable display effect through the persistence of vision.

[0062] In this embodiment, the LED display unit 13 shares the AG segment line and achieves multi-digit display by time-division multiplexing COM1, COM2, and COM3, which can reduce IO usage: the display of data only requires 3 bit selection signals COM1, COM2, and COM3 and 7 segment selection signals AG. By utilizing the persistence of vision effect of the human eye, each LED is lit up in time-division, which can greatly reduce power consumption.

[0063] Furthermore, the circuit module also includes a button unit 16, which is used for function switching and is connected to the main control unit 11. Through the button unit 16, switching between time display, alarm clock display, and other functions can be achieved.

[0064] In this embodiment, the button unit 16 includes a MODE button and a SET button, one end of which is grounded, and the other end is connected to the MODE interface and SET interface of the main control unit 11, respectively. Key information can be sent to the main control unit 11 through the MODE interface and SET interface, thereby enabling the switching of display functions.

[0065] Furthermore, the circuit module also includes a buzzer unit 17, which is used to generate sound, such as for alarm clock reminders. The buzzer unit 17 is connected to the main control unit 11 and includes a buzzer chip BZ, a transistor Q2, and a resistor R5. One end of the buzzer chip BZ is connected to the voltage pin VDD of the main control unit 11 to supply power to the buzzer chip BZ. The other end of the buzzer chip BZ is connected to the collector of the transistor Q2, the emitter of the transistor Q2 is grounded, and the base of the transistor Q2 is connected to the main control unit 11 via resistor R5. In this embodiment, it is connected to the BUZ pin of the main control unit 11.

[0066] The main control unit 11 is connected to the USB power supply unit 14, LED display unit 13, temperature sensor unit 12, light sensor unit 15, button unit 16, and buzzer unit 17, respectively. It controls the operation of each unit. Based on the data from the temperature sensor unit 12, it calculates the temperature value and controls the LED display unit 13 to display the temperature in real time. Furthermore, it controls the brightness of the LED display unit 13 based on the ambient light intensity detected by the light sensor unit 15, allowing the brightness of the LED display unit 13 to adapt to changes in ambient light, thereby achieving dynamic power consumption adjustment, reducing power consumption, and improving user experience.

[0067] In this embodiment, the microcontroller U1 of the main control unit 11 has three bit selection pins COM1, COM2, and COM3, and seven segment selection pins A, B, C, D, E, F, and G, which achieve multi-digit display through time-division multiplexing. Furthermore, the microcontroller U1 of the main control unit 11 has a temperature data pin NTC for acquiring the voltage of the temperature sensor unit 12 to calculate the temperature value. The microcontroller U1 of the main control unit 11 also has an I... 2The C-interface uses SAD and SCL to acquire ambient light intensity data detected by the light sensor 15. The microcontroller U1 of the main control unit 11 has MODE and SET pins for connecting to the button unit 16 to receive button information. The microcontroller U1 of the main control unit 11 also has pins for connecting to a buzzer chip. In addition, the microcontroller U1 of the main control unit 11 includes a crystal oscillator circuit, comprising crystal Y2 and filter capacitors C2 and C3. The two ends of crystal Y2 are connected to two pins of the microcontroller U1 of the main control unit 11, respectively. One end of the filter capacitors C2 and C3 is grounded, and the other end is connected to the two ends of crystal Y2, respectively.

[0068] Thus, the LED multifunctional electronic clock of this utility model is formed. It can be used immediately upon plugging in, is not limited by battery power, and is very convenient to use. In addition, its screen display can be dynamically adjusted according to changes in ambient light intensity, eliminating the need for manual adjustment of display brightness, which greatly facilitates user use and reduces power consumption.

[0069] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. A multi-functional LED electronic clock, characterized in that, Includes: an electronic clock body (10) which can display the function information of the electronic clock; a USB interface (20) fixedly mounted on the electronic clock body (10) and electrically connected to the electronic clock body (10); the USB interface (20) can be inserted into a USB interface socket to draw power to the electronic clock body (10) for operation; the electronic clock body (10) is provided with a circuit module, the circuit module including: a main control unit (11) and a temperature sensor unit (12) electrically connected to the main control unit (11) for use. The system is used to detect ambient temperature; an LED display unit (13) is electrically connected to the main control unit (11) and is used to display functional information; a USB power supply unit (14) is connected between the USB interface (20) and the main control unit (11) and is used to supply power to the main control unit (11); a light sensor unit (15) is electrically connected to the main control unit (11) and is used to detect ambient light intensity; wherein, the main control unit (11) can adjust the brightness of the LED display unit (13) according to the ambient light intensity detected by the light sensor unit (15) to adapt to the ambient brightness.

2. The LED multifunctional electronic clock as described in claim 1, characterized in that, It also has a button unit (16) and a buzzer unit (17) connected to the main control unit (11). The button unit (16) has multiple adjustable function buttons for setting and inputting information on the LED multi-functional electronic clock. The buzzer unit (17) includes at least one adjustable buzzer that can play sound according to the information output by the main control unit (11).

3. The LED multifunctional electronic clock according to claim 1, characterized in that, The temperature sensor unit (12) includes a voltage divider resistor R1 and a thermistor RT. One end of the thermistor RT is grounded, and the other end is connected to the temperature data pin NTC of the main control unit (11) and the voltage divider resistor R1. The other end of the voltage divider resistor R1 is connected to the voltage pin VDD of the main control unit (11). The main control unit (11) can acquire the voltage of the temperature sensor unit (12) after voltage division by the voltage divider resistor R1 and the thermistor RT through the temperature data pin NTC, and can obtain temperature data based on the voltage.

4. The LED multifunctional electronic clock according to claim 1, characterized in that, The light sensing unit (15) includes: a light sensing chip U2, which can communicate with the main control unit (11) through the I²C interface to transmit ambient light intensity data; and a filter capacitor C4, one end of which is grounded and the other end is connected to the voltage pin VDD of the light sensing chip U2, which is used to eliminate high-frequency noise and stabilize the operating voltage of the light sensing chip U2.

5. The LED multifunctional electronic clock as described in claim 4, characterized in that, The photosensitive unit (15) also includes a current-limiting resistor R3, which is connected between the voltage pin VDD and the output pin LEDA of the photosensitive chip U2.

6. The LED multifunctional electronic clock as described in claim 1, characterized in that, The USB power supply unit (14) includes a step-down diode D1 and filter capacitors C5 and C6; the positive terminal of the step-down diode D1 is connected to the power supply pin VBUS of the USB interface (20), and the negative terminal is connected to the voltage pin VDD of the main control unit (11); one end of the filter capacitors C5 and C6 is grounded, and the other end is connected to the negative terminal of the step-down diode D1; the input voltage obtained by the USB interface (20) from the USB interface socket is stepped down by the step-down diode D1 and then supplied to the main control unit (11) for power supply.

7. The LED multifunctional electronic clock as described in claim 6, characterized in that, The filter capacitor C5 has a capacitance of 4.7uF and is used for low-frequency filtering; the filter capacitor C6 has a capacitance of 0.1uF and is used for high-frequency decoupling.

8. The LED multifunctional electronic clock as described in claim 1, characterized in that, The LED display unit (13) includes several common cathode digital tubes. The cathodes of the digital tubes are connected to several digit selection pins of the main control unit (11). The positive terminals of the light-emitting diode units of each digital tube are connected to several segment selection pins of the main control unit (11) and the segment selection pins are reused.

9. The LED multifunctional electronic clock as described in claim 8, characterized in that, The LED display unit (13) time-division multiplexes the bit selection pin.

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