CN102520610B - Intelligent light alarm - Google Patents

Abstract

The invention discloses an intelligent light alarm, which includes a single-chip microcomputer, an infrared communication module, a voice module, a light control module, a clock and a display module; the single-chip microcomputer is respectively connected to the receiver of the infrared communication module through an input interface, and the output interface is connected to the voice module. It is connected with the lighting control module, and the input and output interfaces are connected with the clock and the display module. The light alarm clock adjusts the intensity of the light through the light control module composed of the thyristor dimming circuit, realizes the control of the output sound and music through the voice module, remote setting and control through the infrared communication module, and realizes precise timing and overall control through the single-chip microcomputer , so as to realize that after the set time is reached, the light and music are started. At the beginning, the sound is low and the light is weak. As time goes by, the music becomes louder and the light gradually becomes stronger.

Description

A smart light alarm

technical field

The invention relates to an intelligent light alarm clock, which belongs to the field of life application, and is mainly used in daily life to realize a three-dimensional and humanized alarm clock with sound and light.

Background technique

Traditional alarm clocks can be roughly divided into two types: mechanical alarm clocks and quartz electronic alarm clocks. A mechanical alarm clock, such as the patent "a silent mechanical alarm clock" with the application number 94226853.9, uses the energy released by the belt spring spring to restore deformation or the gravity of the weight falling as the energy source, and takes the mechanical vibration system as the time reference to realize the time. And time metering mechanism. There are many types of mechanical watch mechanisms, but they are generally composed of a prime mover, a drive train, an escapement speed control system, a winding needle system and a pointer system, and the working principles are basically the same. Quartz electronic alarm clock is the patent "quartz electronic alarm clock" of 89205631.2 as application number, and it is to utilize the vibration principle of crystal wafer to realize time and period metering function. When the crystal receives an external force voltage, it will deform and stretch. On the contrary, if the crystal is compressed, electricity will be generated at both ends of the crystal. Such properties can also be seen in many crystals, known as the piezoelectric effect. Quartz watches use crystals that vibrate periodically to bring us accurate time.

Although the above two traditional alarm clocks have the functions of timing and alarm, the mechanical alarm clock needs to be wound up irregularly, which is inconvenient to use. The error of the quartz electronic alarm clock will increase as the usage time becomes longer. At the same time, the above two alarm tones are relatively monotonous, and the music you like cannot be recorded as the ringtone, and it is not combined with the light, which lacks a sense of three-dimensionality and layering. Two kinds of novel alarm bells of voice control alarm bell and alarm bell light have occurred for this reason.

Voice-activated alarm bells, such as the patent "a voice-activated alarm bell and a method for realizing voice-activated alarm bells" with application number 200910158584.4, are mainly used in mobile phones, including alarm bell reminder devices, voice recording devices, central processing units, etc., when the alarm bell sounds , the central processor triggers and receives the voice information sent by the voice input device, obtains the corresponding control information according to the voice information, and then sends it to the alarm prompt device, so that the mobile phone user can realize the alarm by voice when it is inconvenient for manual control. various operations. Another example is the patent "alarm method and device with voice" whose application number is 200910104350.1. By inputting the item to be prompted, the prompt content is stored in the FLASH memory. When the timing time arrives, the prompt content is read from the FLASH memory to voice conversion Equipment and display equipment; the voice conversion equipment converts the prompt content from text to voice information, and makes the sound through the loudspeaker, and displays the prompt content on the display at the same time.

The alarm lamp is the patent "time control alarm lamp" such as the application number 96248332. All in one, the sound is loud when the alarm is set, and the sound is low at ordinary times. The lamp can be turned on and off automatically at a fixed time, and can also be controlled manually, which is convenient to use. Another example is the patent "a desk lamp with an alarm function" whose application number is 201020151634.4, which consists of a bulb, a lampshade, a support arm, an alarm clock, and a base. The alarm clock is installed on the base, and its control circuit board and battery are placed in the base; the base is equipped with a clock knob switch, an alarm setting switch, a desk lamp control switch, and a power interface; the control circuit board is composed of a signal input circuit and a signal processing chip IC. , Signal output circuit composition, switch SA1, switch SA2, switch SA3 constitute the signal input circuit, triode VT, LED display, speaker B, light bulb L constitute the output circuit. It integrates the functions of desk lamp and alarm clock. When the alarm rings, the light bulbs light up at the same time. After people are woken up by the alarm, they can meet the lighting needs. It is easy to use and simple in structure.

The alarm system combined with sound and light can have a better wake-up effect and make people feel a comfortable environment. The above two new types of alarm bells, the voice-activated alarm bell and the alarm bell light, have been improved and enhanced in the alarm bell function. However, the current functions are still very single, mainly including: the alarm tone is single, and personalized music cannot be set; the setting time and starting and stopping work need to be directly pressed manually, and the remote control is not realized, which is inconvenient to use; the combination of alarm tone and light brightness is coordinated and controlled It is lacking in that it is not able to gradually comprehensively control the intensity of the alarm sound and the brightness of the light when the alarm time is up, so as to achieve a more satisfactory and humanized wake-up effect.

Contents of the invention

The object of the present invention is to provide a remote-controllable intelligent light alarm that comprehensively controls the intensity of the alarm sound and the brightness of the light.

The technical solution of the present invention is: an intelligent light alarm, including a single-chip microcomputer, an infrared communication module, a voice module, a light control module, a clock and a display module; The interface is connected to the voice module and the lighting control module, and the input and output interfaces are connected to the clock and display module;

The single-chip microcomputer is used for timing and controlling the voice module, the lighting control module, the clock and the display module, and the single-chip microcomputer is also used for communicating with the infrared communication module;

The voice module is used to play music and control volume;

The lighting control module is used to control the brightness of the lighting;

The clock and display module are used to display time and control interface.

The infrared communication module includes an infrared transmitter and an infrared receiver for remote control of the alarm clock.

Further, described single-chip microcomputer is AT89S52, and described voice module is ISD4002 voice chip, and the chip selection/SS of described ISD4002 voice chip is connected with P1.0 of described single-chip microcomputer, and its clock XCLK is connected with P1.1 of described single-chip microcomputer Connected, its data input MOSI is connected with P1.2 of the single-chip microcomputer, its data output MISO is connected with P1.3 of the single-chip microcomputer, and its interrupt request INT is connected with P3.2 of the single-chip microcomputer.

Further, the light control module is a thyristor dimming circuit, including an isolation circuit and a thyristor circuit, and the output port P2.7 of the single-chip microcomputer is connected to the isolation circuit for adjusting the brightness of the light through an output signal.

Further, the connection between the clock and display module LCD display and the single-chip microcomputer is: the data terminal is connected with the P0 port, the clock input terminal RS is connected with the P2.0 port, the read-write control terminal R/W is connected with the P2.1 port, and the enable port E is connected with P2.2 port. When the clock input terminal RS has a falling edge signal, the LCD receives a work command from the microcontroller. When the clock input terminal RS has a rising edge signal, the LCD serially receives the data in the display buffer of the single-chip microcomputer, controls the LCD display, and first serially receives the function command or the displayed address, and then receives the displayed data.

The beneficial effects of the present invention are as follows: the intensity of the light is adjusted by the light control module composed of the thyristor dimming circuit, the output sound volume and the control of the music are realized by the voice module, the remote setting and control are carried out by the infrared communication module, and the precise timing is realized by the single-chip microcomputer And the overall control, so as to realize the set time, start the light and music, the sound is low and the light is weak at the beginning, as time goes by, the music becomes louder and the light gradually becomes stronger, so that people can feel comfortable from waking up to getting up A process of adaptation to achieve desired physical and psychological effects.

Description of drawings

Further detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

Figure 1 is a structural diagram of the intelligent lighting alarm;

Figure 2 is a schematic diagram of the composition of the infrared remote control;

Fig. 3 is a flowchart of infrared decoding;

Fig. 4 is a voice chip hardware connection diagram;

Fig. 5 is a flow chart of playing voice subroutine;

Figure 6 is the light control circuit principle;

Fig. 7 is a flow chart of a subroutine for controlling light gradients;

Figure 8 is a DS1302 hardware connection diagram;

Figure 9 is a flow chart of the DS1302 driver;

Figure 10 is a hardware connection diagram of LCD1602;

Figure 11 is a flow chart of the LCD1602 display subroutine.

specific implementation plan

As shown in Figure 1, the intelligent light alarm includes AT89S52 single-chip microcomputer, infrared communication module, voice module, lighting control module, clock and display module. The module is connected with the lighting control module, the input and output interfaces are connected with the clock and the display module, and each module is organically combined into a whole. Its main technical features are: based on single-chip microcomputer control, through the clock chip, the same timing and timing functions as the traditional alarm clock are realized; the alarm time is preset through the infrared communication remote control, the ringtone music is selected, and the alarm is activated by pressing the alarm button. Press the cancel button to stop the alarm; when the set time is reached, the single-chip microcomputer starts the voice module and the light control module at the same time, the voice module plays music, and gradually increases, and at the same time, the light changes gradually from weak to strong, and the sound and light reach a certain intensity. In addition; the voice chip not only stores a variety of music information for the user to choose favorite music as the ringtone, but also records different voice announcement periods.

As shown in Figure 2, the infrared communication module includes two parts: infrared transmitter and infrared receiver. The infrared transmitter is a 21-key infrared remote control, mainly including keyboard matrix, code modulation, and LED infrared transmitter; the infrared receiver is an HS138B integrated infrared receiver. The head mainly includes photoelectric conversion amplifier, demodulation circuit and decoding processing program. Through the infrared remote control, you can set the alarm time, select the alarm music, etc., manually control the sound, light and other equipment, and turn on or off the alarm work.

The 21-key infrared remote control adopts the pulse width modulation coding format code modulation, realizes pulse width modulation through the coding method of "0" and "1", including the combination with a period of 2.25ms to represent binary "1", and the pulse width is 0.56ms , the interval is 1.69ms; the combination with the period of 1.125ms means binary "0", the pulse width is 0.56ms, and the interval is 0.56ms. Through the difference of the period, the code modulation of "1" and "0" is realized.

The specific working process of the 21-key infrared remote control is: each key of the infrared remote control corresponds to a different 32-bit binary number. When a key is pressed, the code modulation converts the 32-bit binary number into a pulse signal, and then passes The LED infrared transmitter sends out the infrared pulse signal.

HS138B integrated infrared receiver, in addition to the working power supply pins GND and VCC, also has a pulse signal output interface pin OUT. GND and VCC are connected with the working power ground of the microcontroller and +5V, and OUT is connected with the external interrupt request input segment INT1 (P3.3) of the microcontroller.

The specific working process of the HS138B integrated infrared receiver is: when the HS138B infrared receiver detects an infrared pulse signal, it generates an interrupt request to the single-chip microcomputer and calls the decoding processing program.

The flow chart of the decoding processing program is shown in Figure 3. The output signal of the demodulation circuit of the receiving head is modulated and decoded to obtain a 32-bit binary code stored in the memory of the single-chip microcomputer, and the code of each button is judged, and each button is set function.

As shown in Figure 1, the voice module selects the ISD4002 voice chip and speaker produced by the American ISD Company, and calls and plays a certain piece of music and timekeeping sound stored in the voice chip through the single-chip microcomputer. For example, when the clock reaches the set alarm time, the single-chip microcomputer calls a certain music segment stored in the voice chip and plays the music for about 30 seconds; Second. During the process of playing music and voice time reporting, control the voice playback working status indicator light (light-emitting diode) to light up, and the current can be changed through the digital potentiometer to automatically adjust the volume, and the sound intensity output by the speaker can be controlled after being amplified by the LM386 amplifier.

As shown in Figure 4, the connection relationship between the ISD4002 voice chip and the AT89S52 microcontroller is: the chip select/SS of the ISD4002 voice chip is connected to P1.0 of the microcontroller, the clock XCLK is connected to P1.1, the data input MOSI is connected to P1.2, and the data input The output MISO is connected with P1.3, and the interrupt request INT is connected with INT0 (P3.2). In addition, control the voice playback working status indicator through P1.7.

As shown in Figure 5, after the voice module is powered on, the workflow of the single-chip microcomputer calling and playing voice is: send a power-off command, and then send a power-on command to initialize the voice chip; The loudspeaker will play from the voice segment XX address. When the end of the voice segment EOM appears, an interrupt signal INT is generated, that is, the end of the segment. After the single-chip microcomputer detects the interrupt signal, it sends a power-down command to stop playing immediately.

As shown in Figure 6, the light control module uses a single-chip microcomputer as a controller, and uses a thyristor dimming circuit to adjust the light intensity. The thyristor dimming circuit is composed of an isolation circuit and a thyristor circuit, and the MOC3021 bidirectional thyristor output photocoupler is used to isolate the single-chip microcomputer system and the external thyristor. Adjust the brightness and darkness of the light by adjusting the duty cycle of the pulse signal output by the output port P2.7 of the microcontroller. When the alarm time arrives, the light control function is invoked, and the brightness of the bulb changes from weak to strong, reaching the brightest intensity and delaying for a certain period of time.

The specific working process of the lighting control module is: when the P2.7 port of the microcontroller outputs a low-level signal, the input terminal of the MOC3021 has a current input, the bidirectional thyristor is turned on, and the external thyristor Triac is triggered to turn on, so that the AC220V lamp LIGHT circuit is turned on , the lamp is lit; on the contrary, when the P2.7 port of the microcontroller outputs a high level, the bidirectional thyristor of MOC3021 is cut off, and the external thyristor Triac is disconnected, which is equivalent to an open circuit of the LIGHT circuit of the lamp, and the lamp is turned off; if the P2.7 port of the microcontroller outputs a pulse signal, the thyristor Triac is turned on and off alternately, which can make the lights turn on and off alternately. The larger the ratio of on-time and off-time, the brighter the light looks, and the smaller the ratio of on-time and off-time, the dimmer the light looks.

As shown in Figure 7, the subroutine flow of the light control module single-chip microcomputer control light gradient is: initialization, set the timing interrupt 25us, open the interrupt, set the P2. , the initial value of the low level time is 0, and the P2.7 port is initially low level; when the low level time is up, the low level will be turned into a high level; ;The cycle keeps the duty ratio unchanged for 20 cycles, and when the 20 cycles are reached, the duty cycle is adjusted, and the low level time is increased by 1, and the cycle is continued until the duty cycle reaches the minimum 0, and the end returns. In this way, the gradual change of the light is realized by adjusting the duty cycle of the output pulse.

As shown in Figure 1, the clock and display module includes a clock chip and an LCD display. Timing is realized through the clock chip, working parameters such as alarm time are set through the LCD display and infrared remote control, and the clock and working status are displayed through the LCD display. The clock chip is DS1302, and the LCD display is 1602 type LCD.

As shown in Figure 8, the serial interface between the microcontroller and the clock chip DS1302 is: P2.3 is connected to the clock chip reset RST, P2.5 is connected to the clock chip serial clock SLCK, and P2.4 is connected to the clock chip serial data I/O. The DS1302 clock chip automatically starts counting from the initial time after it is powered on.

As shown in Figure 9, the clock chip DS1302 driver program process is: initialization, requires /RST to be low level, SCLK is low level, /RST is set to high, and a data transmission is started; SCLK sends 16 pulses to complete one time Data transmission, the first 8 square waves are used to input command bytes, the last 8 square waves are used for data output (read DS1302) or data input (write DS1302), on the rising edge of SCLK, the data on the I/O line It is sent to DS1302, and DS1302 outputs data on the I/O line at the falling edge of SCLK; /RST becomes low level, ending data transmission.

The clock operation of the clock and display module includes: setting the working mode of the DS1302 clock chip; setting the initial time, etc. (data transmission from the microcontroller to the clock chip); reading the real-time clock information inside the DS1302 (data transmission from the clock chip to the microcontroller), and then After processing, it is sent to the LCD display buffer.

As shown in Figure 10, the connection between the 1602 model LCD display and the microcontroller is: DB0-DB7 data terminals are connected to P0 port, clock input port RS is connected to P2.0 port, and read-write control port R/W is connected to P2.1 port , the enable end E is connected to the P2.2 port.

As shown in Figure 11, the reading and writing process of the LCD display of the 1602 model is:

1) Start E high level, RS low level, RW low level, ready for command transmission.

2) Then write commands, function initialization: 8-bit data, two rows, 5*7 matrix, move the cursor to the right, the cursor does not display, and turn on the display. When E is low, the initialization command is transmitted.

3) After the command is transmitted, the location address displayed by the character is transmitted, so that E is high, RS is low, and RW is low to prepare for address transmission. When E is low, the address is transmitted.

4) Finally, data transmission, make E high level, RS high level, ready for data transmission, when E is low level, transmit data.

Reset RS, RW and E after data transmission.

Claims (2)

1. A kind of intelligent lighting alarm, comprising single-chip microcomputer, infrared communication module, voice module, lighting control module and clock and display module; It is characterized in that: described single-chip microcomputer is connected with the receiver of infrared communication module by input interface respectively, output interface Connect with the voice module and lighting control module, and connect the input and output interfaces with the clock and display module; The single-chip microcomputer is used for timing and controlling the voice module, the lighting control module, the clock and the display module, and the single-chip microcomputer is also used for communicating with the infrared communication module; The voice module is used to play music and control volume; The lighting control module is used to control the brightness of the lighting; The clock and display module are used to display time and control interface; The infrared communication module includes an infrared transmitter and an infrared receiver for remote control of the alarm clock; Described single-chip microcomputer is AT89S52, and described voice module is ISD4002 voice chip, and the chip selection/SS of described ISD4002 voice chip is connected with P1.0 of described single-chip microcomputer, and its clock XCLK is connected with P1.1 of described single-chip microcomputer, Its data input MOSI is connected with P1.2 of the single-chip microcomputer, its data output MISO is connected with P1.3 of the single-chip microcomputer, and its interrupt request INT is connected with P3.2 of the single-chip microcomputer. 2. An intelligent light alarm according to claim 1, wherein the light control module is a thyristor dimming circuit, including an isolation circuit and a thyristor circuit, and the output port P2.7 of the single-chip microcomputer is connected to the isolation circuit , used to adjust the brightness of the light through the output signal.

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