Clock control circuit

Abstract

The utility model discloses a control circuit of a clock, which comprises a movement trigger circuit, a main control chip and a first key circuit, and input and output pins of the main control chip are respectively connected with the movement trigger circuit and the first key circuit. The first key circuit comprises a key KEY1, and time range information is obtained by pressing the key KEY1 for many times; the movement trigger circuit comprises a trigger sensor, the trigger sensor is in contact with a minute hand gear, driving the minute hand to rotate, of the movement, and when the minute hand rotates to a set angle to trigger the trigger sensor, the master control chip can obtain minute hand position information through the trigger sensor. Through the combination of the time range information and the minute hand position information, the main control chip obtains the time information referred by the hour hand and the minute hand of the current pointer of the movement.

Description

Technical Field

[0001] The utility model relates to the field of clocks, and particularly to a control circuit of a clock. Background Art

[0002] Traditional antique clocks include hands and a gear set. The hands are driven to rotate and chime through the complex traditional driving of the gear set. In existing antique-style clocks, their gear structure, hand structure, and chime structure are all composed of separate structures, and the main control chip controls the gear structure, hand structure, and chime structure respectively, so as to integrate them into a whole.

[0003] In the prior art, the hand structure is controlled by a separate general movement. In the existing design, it often does not have input and output pins connected to the main control chip, so that the main control chip cannot obtain its specific working conditions. Either a movement with input and output pins needs to be customized to interact with the main control chip, or they need to be calibrated and controlled separately. The former design will increase the cost of the movement, and the latter will require separate calibration of the two after errors occur after long-term use, affecting the user experience.

[0004] Therefore, a control circuit of a clock is needed, which has relatively low production cost and maintenance cost, and can directly use the movement of an off-the-shelf product to enable the main control chip to obtain the time information of the movement, so as to effectively control the remaining components. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a control circuit of a clock, which has relatively low production cost and maintenance cost, and can directly use the movement of an off-the-shelf product to enable the main control chip to obtain the time information of the movement, so as to effectively control the remaining components.

[0006] The utility model provides a control circuit of a clock, including a movement trigger circuit, a main control chip, and a first key circuit. The input and output pins of the main control chip are respectively connected to the movement trigger circuit and the first key circuit;

[0007] The first key circuit includes a key KEY1, and the time range information is obtained by pressing the key KEY1 for a certain number of times;

[0008] The movement trigger circuit includes a trigger sensor, and the trigger sensor is in contact with the minute hand gear that drives the minute hand of the movement. When the minute hand rotates to a set angle and triggers the trigger sensor, the main control chip can obtain the minute hand position information through the trigger sensor;

[0009] By combining the time range information and the minute hand position information, the main control chip obtains the time information indicated by the hour hand and the minute hand of the movement's current pointer.

[0010] Preferably, it further includes a gear control circuit. The gear control circuit is connected to the input and output pins of the main control chip. There is a motor provided on the gear control circuit. The main control chip drives the motor to work through the gear control circuit, thereby driving the decorative gear set to rotate.

[0011] Preferably, it further includes a second key circuit. The second key circuit includes a key KEY2, and the key KEY2 controls the working state of the motor through the gear control circuit.

[0012] Preferably, it further includes a speaker drive circuit. The speaker drive circuit is connected to the input and output pins of the main control chip. The main control chip realizes the sound prompt function through the speaker drive circuit.

[0013] Preferably, it further includes a light control circuit. The light control circuit includes a photoresistor CDS. The light control circuit is connected to the input and output pins of the main control chip. The main control chip obtains the ambient light information through the photoresistor CDS.

[0014] Preferably, it further includes a warning light circuit. The warning light circuit is connected to the input and output pins of the main control chip. The working state of the warning light circuit is controlled by the main control chip.

[0015] The beneficial effects of the control circuit of the clock of the present utility model are as follows:

[0016] 1. By adopting the cooperation of the first key circuit and the movement trigger circuit, the time synchronization can be realized between the main control chip and the movement without communication.

[0017] 2. By setting the light control circuit, the speaker drive circuit can be made not to work when the ambient light is dim, without affecting the user's rest. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the circuit diagram of the control circuit of the clock of the present utility model;

[0019] Figure 2 is the circuit diagram of the speaker drive circuit of the control circuit of the clock of the present utility model;

[0020] Figure 3 is the circuit diagram of the gear control circuit of the control circuit of the clock of the present utility model;

[0021] The realization, functional features and advantages of the object of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiment

[0022] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] Referring to Figures 1 to 3 , an embodiment of the control circuit of the clock of the present invention is proposed:

[0024] A control circuit of a clock includes a movement trigger circuit, a main control chip U1, a first button circuit, a gear control circuit, a second button circuit, a speaker drive circuit, a light control circuit, and a reminder light circuit.

[0025] The first button circuit includes a button KEY1, and the first button circuit is connected to the input / output pin PB2 of the main control chip U1.

[0026] The second button circuit includes a button KEY2, and the second button circuit is connected to the input / output pin PB3 of the main control chip U1.

[0027] The speaker drive circuit includes a speaker drive chip U2 and a speaker SPK1. The PB2 and PIO pins of the speaker drive chip U2 are respectively connected to the DATA and BUSYH pins of the main control chip U1. The main control chip realizes the sound reminder function through the speaker drive circuit.

[0028] The reminder light circuit includes light beads LED1, LED2, LED3 and resistors R2, R3 and R4. The light bead LED1 and the resistor R4 are connected in series and then connected to the input / output pin PB0 of the main control chip U1. The light bead LED2 and the resistor R3 are connected in series and then connected to the input / output pin PA0 of the main control chip U1. The light bead LED3 and the resistor R2 are connected in series and then connected to the input / output pin PA1 of the main control chip U1.

[0029] The light control circuit includes a photoresistor CDS and resistors R8, R9 and R10. One end of the photoresistor CDS is respectively connected to one end of the resistors R8 and R9. The other end of the resistor R8 is connected to the power supply. The other end of the resistor R9 is connected to the input / output pin PB4 of the main control chip U1. The other end of the photoresistor CDS is respectively connected to the input / output pin PB5 of the main control chip U1 and one end of the resistor R10. The other end of the resistor R10 is grounded. The main control chip U1 obtains the ambient light information through the photoresistor CDS.

[0030] The gear control circuit is connected to the input / output pin PA3 of the main control chip U1. A motor is provided on the gear control circuit. The main control chip U1 drives the motor to work through the gear control circuit, thereby driving the decorative gear set to rotate.

[0031] The movement trigger circuit includes a trigger sensor Z1. The trigger sensor Z1 includes two metal sheets and a connecting bump arranged at the bottom of the minute hand gear. Both metal sheets are arranged inside the movement, and the movement is a quartz movement. The other end of the trigger sensor Z1 is connected to the input / output pin PB1 of the main control chip U1. After the minute hand rotates to 60 minutes, it can drive the two metal sheets to contact, thereby generating an electrical signal to the main control chip U1, enabling the main control chip U1 to obtain the minute hand position information.

[0032] During actual use, first adjust the hour hand and the minute hand according to the actual time. This product does not have a second hand due to circuit and structural limitations. Obtain a time range based on the adjusted hour hand and minute hand of the actual time. For example, if it is 3:46, it is between 3 o'clock and 4 o'clock. Then press the button KEY1. Pressing it 4 times represents that the time information is that it is about to reach 4 o'clock. When the minute hand rotates to 60 minutes, the movement trigger circuit conveys an electrical signal to the main control chip U1. Thus, the main control chip U1 can know that it is now 4 o'clock and control the speaker SPK1 to sound 4 times through the speaker drive circuit. Subsequently, every time it reaches the whole hour, the time will be synchronized and the speaker will sound the number of times corresponding to the specific time.

[0033] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A control circuit for a clock, characterized in that it includes a movement trigger circuit, a main control chip, and a first button circuit, and the input and output pins of the main control chip are respectively connected to the movement trigger circuit and the first button circuit; the first button circuit includes a button KEY1, and the time range information is obtained by pressing the button KEY1 a certain number of times; the movement trigger circuit includes a trigger sensor, and the trigger sensor is in contact with the minute hand gear that drives the minute hand of the movement to rotate. When the minute hand rotates to a set angle and triggers the trigger sensor, the main control chip can obtain the minute hand position information through the trigger sensor; By combining the time range information and the minute hand position information, the main control chip obtains the time information indicated by the hour hand and the minute hand of the current pointer of the movement.

2. The control circuit of the clock according to claim 1, characterized in that, It further includes a gear control circuit, the gear control circuit is connected to the input and output pins of the main control chip, and a motor is provided on the gear control circuit. The main control chip drives the motor to work through the gear control circuit, thereby driving the decorative gear set to rotate.

3. The control circuit of the clock according to claim 2, characterized in that, It further includes a second button circuit, the second button circuit includes a button KEY2, and the button KEY2 controls the working state of the motor through the gear control circuit.

4. The control circuit of the clock according to claim 1, wherein It further includes a speaker drive circuit, the speaker drive circuit is connected to the input and output pins of the main control chip, and the main control chip realizes the sound prompt function through the speaker drive circuit.

5. The control circuit of the clock according to claim 1, characterized in that, It further includes a light control circuit, the light control circuit includes a photoresistor CDS, the light control circuit is connected to the input and output pins of the main control chip, and the main control chip obtains the ambient light information through the photoresistor CDS.

6. The control circuit of the clock according to claim 1, wherein It further includes a warning light circuit, the warning light circuit is connected to the input and output pins of the main control chip, and the working state of the warning light circuit is controlled by the main control chip.

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