Improved circuit for influencing LED stable display when buzzer of LED electronic clock alarms

Abstract

The utility model discloses an improved circuit for influencing LED stable display when an LED electronic clock buzzer alarms, which comprises an improved circuit, the improved circuit comprises a power supply on-off module, a triode resistor module, a central control module, a resistor regulation and control module, a reset module, a buzzer module and a fusing module, the power supply on-off module comprises DC, R10, R9, DC-DEC, D3, EC1, C4, U2, EC2, C5, D1, D2 and BATT1, the resistor regulation and control module is connected with the triode resistor module, the central control module is connected with the buzzer module, and the fusing module is connected with the triode resistor module. According to the improved circuit for influencing the stable display of the LED when the buzzer of the LED electronic clock alarms, the resistance of each LED lamp scanning circuit for controlling the base electrode of the triode is reduced through the triode resistance module, so that the triode works in an extremely saturated state, and even if the working voltage of the MCU changes in a peak range when the buzzer alarms, the stable display of the LED is influenced. And the triode of the LED scanning circuit can be kept and controlled to be in a saturated working state, and the whole LED lamp scanning circuit unit is in a relatively stable working current state, so that the display effect that the LED lamp does not shake is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED electronic clock buzzers, in particular to an improved circuit for an LED electronic clock buzzer to affect the stable display of an LED during ringing. Background Technique

[0002] The main function of the buzzer in the LED electronic clock is to provide a reminder or alarm function. The buzzer is an integrated electronic sounder powered by DC voltage and is widely used as a sounding device in various electronic products. In the LED electronic clock, the main function of the buzzer is to give a reminder or alarm by making a sound. Designers can make the buzzer emit different sounds according to different uses, such as music, siren or simple beeping sounds, etc., to achieve specific reminder or alarm functions. For example, in the LED electronic clock, the buzzer may be used to remind the time arrival, low battery power or other situations that require the user's attention. The sound volume and frequency of the buzzer can be controlled by adjusting the frequency and amplitude of the input current, so as to achieve the adjustment of pitch and volume. If the sound of the buzzer is too small, the volume can be increased by checking the supply voltage, increasing the drive current, changing the drive method or increasing the sound cavity, etc. These adjustments can be made according to specific application requirements to ensure that the buzzer provides clear and effective reminder or alarm signals in the LED electronic clock.

[0003] However, the traditional use of the LED electronic clock buzzer has the following disadvantages:

[0004] During ringing, the voltage fluctuation caused by the buzzer ringing in the LED display scanning circuit affects the working voltage fluctuation of the MCU, resulting in the fluctuation of the IO output signal corresponding to the MCU that controls the LED scanning circuit. At this time, the current of each unit scanning circuit also fluctuates accordingly, and finally it is reflected in the jitter of the LED display. Content of the Utility Model

[0005] The purpose of the utility model is to provide an improved circuit for an LED electronic clock buzzer to affect the stable display of an LED during ringing, so as to solve the problem that the voltage fluctuation caused by the buzzer ringing in the LED display scanning circuit during ringing affects the working voltage fluctuation of the MCU, resulting in the fluctuation of the IO output signal corresponding to the MCU that controls the LED scanning circuit. At this time, the current of each unit scanning circuit also fluctuates accordingly, and finally it is reflected in the jitter of the LED display as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An improved circuit for an LED electronic clock buzzer that affects the stable display of the LED during ringing, including an improvement circuit. The improvement circuit includes a power on / off module, a triode resistor module, a central control module, a resistor regulation module, a reset module, a buzzer module, and a fuse module. The power on / off module includes DC, R10, R9, DC-DEC, D3, EC1, C4, U2, EC2, C5, D1, D2, and BATT1. The triode resistor module includes RCC, COL2, COL1, AL, R17, R19, and R20. The central control module includes U1, J4, RH, R15, RT, R13, R12, C11, Y1, C2, C1, C6, SNOOZE, LP, SET, DOWN, MODE, ALARM, C8, NORCC, JJY / DCF, MD / DM, C / F, RESET, R14, and R11. The resistor regulation module includes Q3, Q4, Q1, Q2, R2, R4, R1, R3, R5, R7, R8, and R16. The reset module includes Q5, R6, and C7. The buzzer module includes R18, BZ1, and Q6. The fuse module includes RCC2 and C13.

[0007] Preferably, the 2nd pin of U2 is respectively connected to one end of C4, one end of EC1, and one end of D3. The 3rd pin of U2 is respectively connected to one end of EC2, one end of C5, and one end of D1. The other end of D3 is respectively connected to one end of R9 and the 2nd pin of DC. The other end of R9 is connected to one end of DC-DEC. The other end of DC-DEC is connected to one end of R10. The other end of D1 is connected in parallel with one end of D2. The other end of D2 is connected to one end of BATT1. The 1st pin of U2, the other end of C4, the other end of EC1, the 3rd pin of DC, the other end of EC2, the other end of C5, the other end of BATT1, and the other end of R10 are all grounded.

[0008] Preferably, one end of RCC is connected to one end of R17. The other end of RCC is connected to RCC-DOT. COL2 and COL1 are connected in parallel. One end of COL2 and one end of COL1 are both connected to one end of R19. The other end of COL2 and the other end of COL1 are both connected to COL. One end of AL is connected to one end of R20. The other end of AL is connected to AL. The other ends of R17, R19, and R20 are all connected to a 3.6V power supply.

[0009] Preferably, the second pin of J4 is respectively connected to one end of RH, one end of R15, one end of RT, one end of R13, one end of R12, and the first pin of U1. The second pin of U1 is connected to one end of C11 and the other end of R12. The third pin of U1 is connected to CLK. The fifth pin of U1 is respectively connected to one end of Y1 and one end of C2. The other end of Y1 and the fourth pin of U1 are both connected to one end of C1. The sixth pin of U1 is connected to one end of C6. The eighth pin of U1 is connected to RCC-DOT. The ninth pin of U1 is connected to one end of SNOOZE. The tenth pin of U1 is respectively connected to one end of LP and one end of SET. The eleventh pin of U1 is respectively connected to one end of DOWN and one end of MODE. The twelfth pin of U1 is connected to the opposite end of SET. The thirteenth pin of U1 is connected to the third pin of ALARM. The sixteenth pin of U1 is connected to COM1. The seventeenth pin of U1 is connected to COM2. The eighteenth pin of U1 is connected to COM3. The nineteenth pin of U1 is connected to COM4. The twentieth pin of U1 is connected to SEG1. The twenty-first pin of U1 is connected to SEG2. The twenty-second pin of U1 is connected to SEG3. The twenty-third pin of U1 is connected to SEG4. The twenty-fourth pin of U1 is connected to SEG5. The twenty-fifth pin of U1 is connected to SEG6. The twenty-sixth pin of U1 is connected to SEG7. The twenty-seventh pin of U1 is connected to SEG8. The twenty-eighth pin of U1 is connected to SEG9. The twenty-ninth pin of U1 is connected to SEG10. The thirtieth pin of U1 is connected to COL. The thirty-first pin of U1 is connected to one end of C8. The thirty-second pin of U1 is connected to AL. The thirty-fifth pin of U1 is connected to BZ. The thirty-sixth pin of U1 is connected to DC-DEC. The thirty-seventh pin of U1 is connected to PON. The thirty-eighth pin of U1 is connected to TCO. The thirty-ninth pin of U1 is connected to 40 / 60K. The fortieth pin of U1 is connected to one end of NORCC. The forty-first pin of U1 is connected to one end of JJY / DCF. The forty-second pin of U1 is connected to one end of MD / DM. The forty-third pin of U1 is connected to one end of C / F. The forty-fourth pin of U1 is connected to SDA. The forty-fifth pin of U1 is connected to SCK. The forty-sixth pin of U1 is connected to one end of RESET. The forty-seventh pin of U1 is connected to one end of R14. The forty-eighth pin of U1 is connected to one end of R11. The other end of R14 is respectively connected to the other end of RH and the other end of R15. The other end of R11 is respectively connected to the other end of RT and the other end of R13.The other ends of C11, C1, C2, C6, the 7th pin of U1, the other end of SNOOZE, the other end of LP, the other end of SET, the other end of DOWN, the other end of MODE, the 2nd pin of ALARM, the other end of C8, the other end of NORCC, the other end of JJY / DCF, the other end of MD / DM, the other end of C / F, and the other end of RESET are all grounded.

[0010] Preferably, one end of Q1 is connected to one end of R1, the other end of Q1 is connected to one end of R2, one end of Q2 is connected to one end of R3, the other end of Q2 is connected to one end of R4, ORs are connected to the other ends of R2 and R4 respectively, COM1 is connected to the other end of R1, COM2 is connected to the other end of R3, one end of Q3 is connected to one end of R5, the other end of Q3 is connected to one end of R7, one end of Q4 is connected to one end of R8, the other end of Q4 is connected to one end of R16, ORs are connected to the other ends of R7 and R16 respectively, COM3 is connected to the other end of R5, and COM4 is connected to the other end of R8.

[0011] Preferably, one end of Q5 is connected to one end of R6 and one end of C7 respectively, and the other end of Q5 and the other end of R6 are both grounded.

[0012] Preferably, the 1st pin of Q6 is connected to one end of R18, the 2nd pin of Q6 is connected to one end of BZ1, and the 3rd pin of Q6 is grounded.

[0013] Preferably, the 2nd pin of RCC2 is connected to one end of C13, the other end of C13 and the 1st pin of RCC2 are grounded, the 3rd pin of RCC2 is connected to PON, the 4th pin of RCC2 is connected to TCO, and the 5th pin of RCC2 is connected to 40 / 60K.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: By reducing the resistance of the triode resistor module for controlling the base of each LED lamp scanning circuit triode, the triode works in an extremely saturated state. Even when the working voltage of the MCU changes within the peak value range during the buzzer sounding, it can still keep the triode of the LED scanning circuit in the saturated working state, and the entire LED lamp scanning circuit unit is in a relatively stable working current state, achieving the display effect that the LED lamp does not shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the architecture diagram of the improved circuit of the present utility model;

[0016] Figure 2This is the circuit diagram of the power on / off module of the present utility model;

[0017] Figure 3 This is the circuit diagram of the triode resistor module of the present utility model;

[0018] Figure 4 This is the circuit diagram of the central control module of the present utility model;

[0019] Figure 5 This is the circuit diagram of the resistor regulation module of the present utility model;

[0020] Figure 6 This is the circuit diagram of the reset module of the present utility model;

[0021] Figure 7 This is the circuit diagram of the buzzer module of the present utility model;

[0022] Figure 8 This is the circuit diagram of the fuse module of the present utility model. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0024] Please refer to Figure 1-8 , the present utility model provides an improved circuit for an LED electronic clock buzzer that affects the stable display of the LED during ringing, including an improved circuit. The improved circuit includes a power on / off module, a triode resistor module, a central control module, a resistor regulation module, a reset module, a buzzer module, and a fuse module. The power on / off module includes DC, R10, R9, DC-DEC, D3, EC1, C4, U2, EC2, C5, D1, D2, and BATT1. The triode resistor module includes RCC, COL2, COL1, AL, R17, R19, and R20. The central control module includes U1, J4, RH, R15, RT, R13, R12, C11, Y1, C2, C1, C6, SNOOZE, LP, SET, DOWN, MODE, ALARM, C8, NORCC, JJY / DCF, MD / DM, C / F, RESET, R14, and R11. The resistor regulation module includes Q3, Q4, Q1, Q2, R2, R4, R1, R3, R5, R7, R8, and R16. The reset module includes Q5, R6, and C7. The buzzer module includes R18, BZ1, and Q6. The fuse module includes RCC2 and C13.

[0025] The two ends of pin 2 of U2 are respectively connected to one end of C4, one end of EC1, and one end of D3. The three ends of pin 3 of U2 are respectively connected to one end of EC2, one end of C5, and one end of D1. The other end of D3 is respectively connected to one end of R9 and pin 2 of DC. The other end of R9 is connected to one end of DC-DEC. The other end of DC-DEC is connected to one end of R10. The other end of D1 is connected in parallel with one end of D2. The other end of D2 is connected to one end of BATT1. The other ends of pin 1 of U2, the other end of C4, the other end of EC1, pin 3 of DC, the other end of EC2, the other end of C5, the other end of BATT1, and the other end of R10 are all grounded.

[0026] One end of RCC is connected to one end of R17. The other end of RCC is connected to RCC-DOT. COL2 is connected in parallel with COL1. One end of COL2 and one end of COL1 are both connected to one end of R19. The other ends of COL2 and COL1 are both connected to COL. One end Y of AL is connected to one end of R20. The other end of AL is connected to AL. The other ends of R17, R19, and R20 are all connected to a 3.6V power supply.

[0027] The two ends of pin 2 of J4 are respectively connected to one end of RH, one end of R15, one end of RT, one end of R13, one end of R12 and pin 1 of U1. One end of pin 2 of U1 is connected to one end of C11 and the other end of R12. CLK is connected to pin 3 of U1. One end of pin 5 of U1 is respectively connected to one end of Y1 and one end of C2. The other end of Y1 and pin 4 of U1 are both connected to one end of C1. One end of C6 is connected to pin 6 of U1. RCC-DOT is connected to pin 8 of U1. One end of SNOOZE is connected to pin 9 of U1. One end of pin 10 of U1 is respectively connected to one end of LP and one end of SET. One end of pin 11 of U1 is respectively connected to one end of DOWN and one end of MODE. The end opposite to SET is connected to pin 12 of U1. Pin 3 of ALARM is connected to pin 13 of U1. COM1 is connected to pin 16 of U1. COM2 is connected to pin 17 of U1. COM3 is connected to pin 18 of U1. COM4 is connected to pin 19 of U1. SEG1 is connected to pin 20 of U1. SEG2 is connected to pin 21 of U1. SEG3 is connected to pin 22 of U1. SEG4 is connected to pin 23 of U1. SEG5 is connected to pin 24 of U1. SEG6 is connected to pin 25 of U1. SEG7 is connected to pin 26 of U1. SEG8 is connected to pin 27 of U1. SEG9 is connected to pin 28 of U1. SEG10 is connected to pin 29 of U1. COL is connected to pin 30 of U1. One end of C8 is connected to pin 31 of U1. AL is connected to pin 32 of U1. BZ is connected to pin 35 of U1. DC-DEC is connected to pin 36 of U1. PON is connected to pin 37 of U1. TCO is connected to pin 38 of U1. 40 / 60K is connected to pin 39 of U1. One end of NORCC is connected to pin 40 of U1. One end of JJY / DCF is connected to pin 41 of U1. One end of MD / DM is connected to pin 42 of U1. One end of C / F is connected to pin 43 of U1. SDA is connected to pin 44 of U1. SCK is connected to pin 45 of U1. One end of RESET is connected to pin 46 of U1. One end of R14 is connected to pin 47 of U1. One end of R11 is connected to pin 48 of U1. The other end of R14 is respectively connected to the other end of RH and the other end of R15. The other end of R11 is respectively connected to the other end of RT and the other end of R13. The other ends of C11, C1, C2, C6, pin 7 of U1, the other end of SNOOZE, the other end of LP, the other end of SET, the other end of DOWN, the other end of MODE, pin 2 of ALARM, the other end of C8, the other end of NORCC, the other end of JJY / DCF, the other end of MD / DM, the other end of C / F and the other end of RESET are all grounded.

[0028] One end of Q1 is connected to one end of R1, the other end of Q1 is connected to one end of R2, one end of Q2 is connected to one end of R3, the other end of Q2 is connected to one end of R4, ORs are connected to the other ends of R2 and R4 respectively, COM1 is connected to the other end of R1, COM2 is connected to the other end of R3, one end of Q3 is connected to one end of R5, the other end of Q3 is connected to one end of R7, one end of Q4 is connected to one end of R8, the other end of Q4 is connected to one end of R16, ORs are connected to the other ends of R7 and R16 respectively, COM3 is connected to the other end of R5, and COM4 is connected to the other end of R8.

[0029] One end of Q5 is connected to one end of R6 and one end of C7 respectively, and the other end of Q5 and the other end of R6 are grounded.

[0030] The 1-pin of Q6 is connected to one end of R18, the 2-pin of Q6 is connected to one end of BZ1, and the 3-pin of Q6 is grounded.

[0031] The 2-pin of RCC2 is connected to one end of C13, the other end of C13 and the 1-pin of RCC2 are grounded, the 3-pin of RCC2 is connected to PON, the 4-pin of RCC2 is connected to TCO, and the 5-pin of RCC2 is connected to 40 / 60K.

[0032] When the embodiment of the present application is in use: the power on / off module controls the power supply input to the LED electronic clock to be turned on and off, the triode resistor module reduces the resistance of the resistor at the base of the triode in each LED lamp scanning circuit, the central control module collects the resistance value in real time and regulates the resistance value, the resistance regulation module makes the triode work in an extremely saturated state, that is, even when the working voltage of the MCU changes within the peak value range when the buzzer sounds, it can still keep the triode in the LED scanning circuit in a saturated working state, the reset module facilitates the reset of the buzzer, and the buzzer module drives the buzzer to start.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An improvement circuit for the LED electronic clock buzzer that affects the stable display of LED when it sounds, including the improvement circuit, characterized in that: The improved circuit includes a power on / off module, a transistor resistance module, a central control module, a resistance control module, a reset module, a buzzer module and a fuse module. The power on / off module includes DC, R10, R9, DC-DEC, D3, EC1, C4, U2, EC2, C5, D1, D2 and BATT1. The transistor resistance module includes RCC, COL2, COL1, AL, R17, R19 and R20. The central control module includes U1, J4, RH, R15, RT, R13, R12, C 11, Y1, C2, C1, C6, SNOOZE, LP, SET, DOWN, MODE, ALARM, C8, NORCC, JJY / DCF, MD / DM, C / F, RESET, R14 and R11, the resistance control module includes Q3, Q4, Q1, Q2, R2, R4, R1, R3, R5, R7, R8 and R16, the reset module includes Q5, R6 and C7, the buzzer module includes R18, BZ1 and Q6, and the fuse module includes RCC2 and C13.

2. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: The 2nd end pin of U2 is respectively connected to one end of C4, one end of EC1 and one end of D3, the 3rd end pin of U2 is respectively connected to one end of EC2, one end of C5 and one end of D1, the other end of D3 is respectively connected to one end of R9 and the 2nd end pin of DC, the other end of R9 is connected to one end of DC-DEC, the other end of DC-DEC is connected to one end of R10, the other end of D1 is connected in parallel with one end of D2, the other end of D2 is connected to one end of BATT1, the 1st end pin of U2, the other end of C4, the other end of EC1, the 3rd end pin of DC, the other end of EC2, the other end of C5, the other end of BATT1 and the other end of R10 are all grounded.

3. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: One end of the RCC is connected to one end of R17, and the other end of the RCC is connected to RCC-DOT, the COL2 is connected in parallel to COL1, one end of the COL2 and one end of COL1 are both connected to one end of R19, and the other end of the COL2 and the other end of COL1 are both connected to COL, one end Y of the AL is connected to one end of R20, and the other end of the AL is connected to AL, and the other end of R17, the other end of R19 and the other end of R20 are all connected to a 3.6V power supply.

4. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: The 2nd pin of J4 is connected to one end of RH, one end of R15, one end of RT, one end of R13, one end of R12 and one end of U1 respectively to connect U1, the 2nd pin of U1 is connected to one end of C11 and the other end of R12, the 3rd pin of U1 is connected to CLK, the 5th pin of U1 is connected to one end of Y1 and one end of C2 respectively, the other end of Y1 and the 4th pin of U1 are both connected to one end of C1, the 6th pin of U1 is connected to one end of C6, the 8th pin of U1 is connected to RCC-DOT, the 9th pin of U1 is connected to one end of SNOOZE, the 10th pin of U1 is connected to one end of LP and SET respectively. The first end of U1 is connected to COM1, the first end of U1 is connected to COM2, the first end of U1 is connected to COM3, the first end of U1 is connected to COM4, ​​the second end of U1 is connected to SEG1, the second end of U1 is connected to SEG2, the second end of U1 is connected to SEG3, the second end of U1 is connected to SEG4, the second end of U1 is connected to SEG5, the second end of U1 is connected to SEG6, the second end of U1 is connected to SEG7, the second end of U1 is connected to SEG8, the second end of U1 is connected to SEG9, the second end of U1 is connected to SEG10, the second end of U1 is connected to SEG11, the second end of U1 is connected to SEG22, the second end of U1 is connected to SEG33, the second end of U1 is connected to SEG44, the second end of U1 is connected to SEG12. SEG5, the 25th pin of U1 is connected to SEG6, the 26th pin of U1 is connected to SEG7, the 27th pin of U1 is connected to SEG8, the 28th pin of U1 is connected to SEG9, the 29th pin of U1 is connected to SEG10, the 30th pin of U1 is connected to COL, the 31st pin of U1 is connected to one end of C8, the 32nd pin of U1 is connected to AL, the 35th pin of U1 is connected to BZ, the 36th pin of U1 is connected to DC-DEC, the 37th pin of U1 is connected to PON, the 38th pin of U1 is connected to TCO, the 39th pin of U1 is connected to 40 / 60K, the 4 The 0 pin is connected to one end of NORCC, the 41 pin of U1 is connected to one end of JJY / DCF, the 42 pin of U1 is connected to one end of MD / DM, the 43 pin of U1 is connected to one end of C / F, the 44 pin of U1 is connected to SDA, the 45 pin of U1 is connected to SCK, the 46 pin of U1 is connected to one end of RESET, the 47 pin of U1 is connected to one end of R14, the 48 pin of U1 is connected to one end of R11, the other end of R14 is respectively connected to the other end of RH and the other end of R15, the other end of R11 is respectively connected to the other end of RT and the other end of R13,The other end of C11, the other end of C1, the other end of C2, the other end of C6, the 7th pin of U1, the other end of SNOOZE, the other end of LP, the other end of SET, the other end of DOWN, the other end of MODE, the 2nd pin of ALARM, the other end of C8, the other end of NORCC, the other end of JJY / DCF, the other end of MD / DM, the other end of C / F and the other end of RESET are all grounded.

5. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: One end of Q1 is connected to one end of R1, the other end of Q1 is connected to one end of R2, one end of Q2 is connected to one end of R3, the other end of Q2 is connected to one end of R4, the other ends of R2 and R4 are both connected to OR, the other end of R1 is connected to COM1, the other end of R3 is connected to COM2, one end of Q3 is connected to one end of R5, the other end of Q3 is connected to one end of R7, one end of Q4 is connected to one end of R8, the other end of Q4 is connected to one end of R16, the other ends of R7 and R16 are both connected to OR, the other end of R5 is connected to COM3, and the other end of R8 is connected to COM4.

6. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: One end of Q5 is connected to one end of R6 and one end of C7 respectively, and the other end of Q5 and the other end of R6 are grounded.

7. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: Pin 1 of the Q6 is connected to one end of R18, pin 2 of the Q6 is connected to one end of BZ1, and pin 3 of the Q6 is grounded.

8. The circuit for improving the LED electronic clock buzzer that affects the stable display of LED when it sounds according to claim 1, characterized in that: Pin 2 of the RCC2 is connected to one end of C13, the other end of C13 and pin 1 of RCC2 are grounded, pin 3 of the RCC2 is connected to PON, pin 4 of the RCC2 is connected to TCO, and pin 5 of the RCC2 is connected to 40 / 60K.

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