CN112230534A

CN112230534A - Multifunctional alarm clock based on sensor module design

Info

Publication number: CN112230534A
Application number: CN202011162009.4A
Authority: CN
Inventors: 周薇; 陈庆; 李尚元
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-01-15

Abstract

The invention discloses a multifunctional alarm clock based on sensor module design, aiming at providing a multifunctional alarm clock based on sensor module design, which has the technical scheme key points that: the digital tube display device comprises a sensor module, a main control module, an ADC (analog-to-digital converter) module, a display module, a clock module and a power supply module, wherein the sensor module is a temperature sensor and an illumination sensor, the main control module is a main control chip, the main control chip adopts an STM32F103C8T6 model, and the display module is a digital tube display screen; the sensor module is electrically connected with the main control module, the main control module is electrically connected with the ADC module, the ADC module is electrically connected with the display module, the display module is electrically connected with the clock module, and the power supply module is electrically connected with the sensor module, the main control module, the ADC module, the display module and the clock module.

Description

Multifunctional alarm clock based on sensor module design

Technical Field

The invention relates to the technical field of electronics, in particular to a multifunctional alarm clock based on sensor module design.

Background

From ancient sundials, water clocks, fire clocks and other timepieces to modern mechanical clocks, electronic clocks and alarm clocks, the trend is towards maturity. The single timing function of the traditional quartz clock can not meet the requirement, and people tend to integrate multifunctional electronic clocks with more functions, such as an electronic alarm clock, an electronic stopwatch, temperature detection and the like. The single chip microcomputer has high precision and low price, and is widely applied to the electronic alarm clock.

Although mobile phones are developed more and more powerful, many people are willing to consume the alarm clock. The reason is not only because people can remind themselves of the things needing to be completed on time every day, but also because people do not need to worry about that the mobile phone is set to be silent and cannot remind themselves on time because the mobile phone is out of power. Therefore, the electronic alarm clock based on the single chip microcomputer has wide application prospect.

Therefore, the multifunctional alarm clock designed at this time can realize the functions of three aspects: firstly, environmental data parameters are collected through a temperature and humidity sensor to realize temperature display; secondly, calculating time and date through a perpetual calendar algorithm; thirdly, the function of setting the alarm clock is realized by combining the illumination sensor with the key module.

Disclosure of Invention

The invention aims to provide a multifunctional alarm clock designed based on a sensor module, which integrates a sensor development technology, an embedded development technology and a software coding technology, and has the advantages of low cost, easy operation, strong practicability and the like.

The technical purpose of the invention is realized by the following technical scheme:

a multifunctional alarm clock designed based on a sensor module comprises the sensor module, a main control module, an ADC (analog-to-digital converter) module, a display module, a clock module and a power module, wherein the sensor module is a temperature sensor and an illumination sensor, the main control module is a main control chip, the main control chip adopts an STM32F103C8T6 model, and the display module is a nixie tube display screen; the sensor module is electrically connected with the main control module, the main control module is electrically connected with the ADC module, the ADC module is electrically connected with the display module, the display module is electrically connected with the clock module, and the power supply module is electrically connected with the sensor module, the main control module, the ADC module, the display module and the clock module.

By adopting the technical scheme, ambient temperature is collected by using the temperature sensor DS18B20, digital signals can be directly transmitted to the main control chip, the AD conversion process is omitted, and the temperature reliability can be effectively ensured. The method comprises the steps of collecting ambient illumination intensity by an illumination sensor, transmitting collected data to a main control chip, converting an analog signal into a digital signal by an ADC (analog-to-digital conversion) module, converting the data signal into a measured value of a standard unit according to a conversion formula corresponding to the sensor, and finally displaying a temperature value and the illumination intensity on a nixie tube display screen. The current calendar clock can be calculated by a group of continuously counting counters of the RTC real-time clock module and a perpetual calendar algorithm. When we want to modify the current time and date, only the value of the counter needs to be modified, which is very convenient.

Further setting: an RTC module electrically connected with the clock module is further arranged between the main control module and the clock module, and a buzzer module electrically connected with the clock module is further arranged on one side of the clock module.

By adopting the technical scheme, if the system is in fault and needs to be reset or awaken from the standby mode, the preset time cannot be changed and the system can continue to work because the RTC module and the clock configuration system are positioned in the backup area. And judging whether the current time is matched with the set alarm clock time or not through the interruption in the RTC module, if so, entering interruption, and sending an alarm by the buzzer. When the user presses the key, the alarm clock is turned off.

Further setting: the power module comprises a 5V power supply and a 3.3V power supply, the 5V power supply is electrically connected with the sensor module, the ADC analog-to-digital conversion module, the display module, the clock module, the RTC module and the buzzer module, and the 3.3V power supply is electrically connected with the main control module.

Through adopting above-mentioned technical scheme, power module is the heart part of entire system, because all modules all need the power supply, and it can be for entire system power supply, and the system mainly uses 5V and 3.3V's power, and wherein 3.3V is for main control chip power supply, and 5V mainly is for other peripheral hardware components and parts power supply, and the power supply mode of USB is selected for use in this design, and the interface type is the MicroUSB interface, and its output voltage and electric current are respectively: +5V and 500mA, but since STMF103C8T6 is powered with 3.3V, it is necessary to convert the output voltage 5V to 3.3V. In consideration of economic cost, the AMS1117-3.3 voltage stabilizer is adopted in the design, and the positive pole of the 5V power supply output by the USB interface is forward converted into stable 3.3V power supply for the main control chip through the AMS1117-3.3 voltage stabilization.

Further setting: and a MicroUSB interface module is arranged between the 3.3V power supply and the main control module.

By adopting the technical scheme, the interface type is a MicroUSB interface, and the output voltage and the current are respectively as follows: +5V and 500mA, but since STMF103C8T6 is powered with 3.3V, it is necessary to convert the output voltage 5V to 3.3V. In consideration of economic cost, the AMS1117-3.3 voltage stabilizer is adopted in the design, and the positive pole of the 5V power supply output by the USB interface is forward converted into stable 3.3V power supply for the main control chip through the AMS1117-3.3 voltage stabilization.

In conclusion, the invention has the following beneficial effects: the alarm clock designed at this time integrates a sensor development technology, an embedded development technology and a software coding technology, and has the advantages of low cost, easiness in operation, high practicability and the like.

The functions of three aspects are realized: firstly, environmental data parameters are collected through a temperature and humidity sensor to realize temperature display; secondly, calculating time and date through a perpetual calendar algorithm; thirdly, the function of setting the alarm clock is realized by combining the illumination sensor with the key module.

Drawings

FIG. 1 is a block flow diagram of a multi-function alarm clock system based on a sensor module design;

FIG. 2 is a flow chart of a multifunctional alarm clock system based on a sensor module design.

In the figure, 1, a sensor module; 11. (ii) a A temperature sensor; 12. an illumination sensor; 2. a main control module; 21. a main control chip; 3. an ADC analog-to-digital conversion module; 4. a display module; 41. a nixie tube display screen; 5. a clock module; 6. a power supply module; 7. An RTC module; 8. a buzzer module; 9. MicroUSB interface module.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A multifunctional alarm clock designed based on a sensor module is shown in figures 1 and 2 and comprises a sensor module 1, a main control module 2, an ADC (analog-to-digital converter) module 3, a display module 4, a clock module 5, an RTC (real time clock) module 7, a buzzer module 8 and a power supply module 6. The sensor module 1 is a temperature sensor 11 and an illumination sensor 12, the main control module 2 is a main control chip 21, the main control chip 21 adopts the model STM32F103C8T6, and the display module 4 is a nixie tube display screen 41. The sensor module 1 is electrically connected with the main control module 2, the main control module 2 is electrically connected with the ADC analog-to-digital conversion module 3, the ADC analog-to-digital conversion module 3 is electrically connected with the display module 4, the display module 4 is electrically connected with the clock module 5, and the power supply module 6 is electrically connected with the sensor module 1, the main control module 2, the ADC analog-to-digital conversion module 3, the display module 4 and the clock module 5.

The power module 6 comprises a 5V power supply and a 3.3V power supply, the 5V power supply is electrically connected with the sensor module 1, the ADC analog-to-digital conversion module 3, the display module 4, the clock module 5, the RTC module 7 and the buzzer module 8, the 3.3V power supply is electrically connected with the main control module 2, and a MicroUSB interface module 9 is arranged between the 3.3V power supply and the main control module 2.

The main working principle is as follows: ambient temperature is collected by the temperature sensor 11DS18B20, digital signals can be directly transmitted to the main control chip 21, the AD conversion process is omitted, and the reliability of temperature can be effectively guaranteed. The illumination sensor 12 is used for collecting the ambient illumination intensity, the collected data is transmitted to the main control chip 21, the analog signal is converted into a digital signal through the ADC analog-to-digital conversion module, the data signal is converted into a measurement value of a standard unit according to a conversion formula corresponding to the sensor, and finally, the temperature value and the illumination intensity are displayed on the nixie tube display screen 41. The current calendar clock can be calculated by a set of continuously counting counters of the RTC module 7 in cooperation with the perpetual calendar algorithm. When we want to modify the current time and date, only the value of the counter needs to be modified, which is very convenient.

If the system fails and needs to be reset or awakened from standby mode, the preset time will not change and will continue to operate because the RTC module 7 and the clock configuration system are located in the backup area. Through the internal interruption of the RTC module 7, whether the current time is matched with the set alarm clock time is judged, if so, the interruption is carried out, and the buzzer gives an alarm. When the user presses the key, the alarm clock is turned off.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims.

Claims

1. The utility model provides a multi-functional alarm clock based on sensor module design which characterized in that: the digital tube display device comprises a sensor module (1), a main control module (2), an ADC (analog-to-digital converter) module (3), a display module (4), a clock module (5) and a power module (6), wherein the sensor module (1) is a temperature sensor (11) and an illumination sensor (12), the main control module (2) is a main control chip (21), the main control chip (21) adopts an STM32F103C8T6 model, and the display module (4) is a digital tube display screen (41); sensor module (1) is connected with host system (2) electricity, host system (2) is connected with ADC analog-to-digital conversion module (3) electricity, ADC analog-to-digital conversion module (3) is connected with display module (4) electricity, display module (4) is connected with clock module (5) electricity, power module (6) is connected with sensor module (1), host system (2), ADC analog-to-digital conversion module (3), display module (4), clock module (5) electricity.

2. The multifunctional alarm clock designed based on the sensor module as claimed in claim 1, wherein: an RTC module (7) electrically connected with the clock module (5) is further arranged between the main control module (2) and the clock module (5), and a buzzer module (8) electrically connected with the clock module (5) is further arranged on one side.

3. The multifunctional alarm clock designed based on the sensor module as claimed in claim 2, wherein: the power module (6) comprises a 5V power supply and a 3.3V power supply, the 5V power supply is electrically connected with the sensor module (1), the ADC analog-to-digital conversion module (3), the display module (4), the clock module (5), the RTC module (7) and the buzzer module (8), and the 3.3V power supply is electrically connected with the main control module (2).

4. The multifunctional alarm clock designed based on the sensor module as claimed in claim 3, wherein: and a MicroUSB interface module (9) is arranged between the 3.3V power supply and the main control module (2).