A control circuit for automatic pointer correction, a smart watch and a wearable device

Abstract

A control circuit, smart watch and wearable device for automatic pointer correction, including a sensor module, a main control module and a drive module, which obtains the real-time position of the pointer at every preset time period and outputs a feedback signal, then obtains the real-time time according to the real-time position of the pointer, and outputs a drive signal when the difference between the real-time time and the standard time of the location exceeds a preset threshold, and finally corrects the real-time position of the pointer according to the drive signal, so that the real-time time displayed by the pointer is consistent with the standard time of the location. In this way, the pointer is positioned intelligently and adjusted and calibrated in real time; the control circuit can be universally applied to smart watches or other wearable devices to obtain accurate time in real time, has high practical value, and solves the problem of large travel time error caused by the inability to accurately position the physical pointer in the smart watch, which requires frequent manual correction in the existing pointer correction technology.

Description

Technical Field

[0001] The present application belongs to the field of electronic circuit technology, and in particular, relates to a control circuit for automatic pointer correction, a smart watch, and a wearable device. Background Art

[0002] At present, watches are becoming more and more popular among users, and the grade of watches can often represent the identity of the wearer. However, since the pointer of the watch may have errors due to external factors during its movement, the time displayed by the watch is inaccurate, and manual adjustment and calibration are required every once in a while; however, the premise of calibration is to locate the position of the pointer first, so as to ensure the deviation between the real-time time displayed by the pointer and the national standard time. As for the positioning of the pointer, it is also a big problem.

[0003] Therefore, the existing pointer correction technology has the problem that the physical pointer positioning in the smart watch is difficult and the timing error is large, which requires frequent manual correction. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a control circuit, a smart watch and a wearable device for automatic pointer correction, aiming to solve the problem of existing pointer correction technology that the physical pointer in the smart watch cannot be accurately positioned, resulting in large timing errors and requiring frequent manual correction.

[0005] A first aspect of an embodiment of the present application provides a control circuit for automatic pointer correction, comprising:

[0006] A sensor module, connected to the pointer, for obtaining the real-time position of the pointer at every preset time period and outputting a feedback signal;

[0007] a main control module connected to the sensor module, configured to receive the feedback signal, confirm the real-time position of the pointer according to the feedback signal, and output a driving signal when the difference between the real-time time displayed by the pointer and the standard time of the location exceeds a preset threshold; and

[0008] The driving module is connected to the main control module and is used to amplify the power of the driving signal and correct the real-time position of the pointer so that the real-time time displayed by the pointer is consistent with the standard time of the location.

[0009] In one embodiment, the sensor module comprises:

[0010] a sensing unit, used to obtain the real-time position of the pointer at every preset time period and output an electrical position signal; and

[0011] The feedback unit is connected to the sensing unit and is used to convert the position electrical signal into the feedback signal and output it.

[0012] In one embodiment, the sensing unit comprises:

[0013] A passive magnetic control sensor, used to obtain the position of the reference magnetic source body and convert it into a corresponding electrical signal; and

[0014] The magnetically controlled switch is closely connected to the passive magnetically controlled sensor and is used for being turned on when receiving the magnetic signal output by the passive magnetically controlled sensor, and outputting the position electrical signal.

[0015] In one embodiment, the sensing unit includes a light sensor device, an electric sensor device and an acoustic sensor device.

[0016] In one embodiment, the feedback unit includes:

[0017] A first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a reference resistor, and a filter;

[0018] The first end of the second resistor is connected to the sensing unit, the second end of the second resistor is connected to the first end of the first capacitor and the first end of the third resistor, the second end of the third resistor and the first end of the second capacitor are connected to the first input end of the filter, the second end of the first capacitor and the second end of the second capacitor are grounded, the first end of the first resistor is connected to a reference voltage, the second end of the first resistor and the first end of the reference voltage are connected to the second input end of the filter, and the second end of the reference voltage and the output end of the filter are connected to the main control module.

[0019] In one embodiment, the main control module includes:

[0020] A receiving unit, connected to the sensor module, and configured to receive the feedback signal;

[0021] a comparison unit connected to the receiving unit, for confirming the positioning position of the pointer according to the feedback signal, and comparing the real-time time displayed by the pointer with the standard time of the location; and an output unit connected to the comparison unit, for outputting a driving signal when the difference between the real-time time displayed by the pointer and the standard time of the location exceeds a preset threshold.

[0022] In one embodiment, the driving module includes a single motor component, a dual motor component or a multi-motor component.

[0023] In one embodiment, it also includes:

[0024] The time indicating module is connected to the driving module and the sensing module and is used to provide a reference magnetic source.

[0025] A second aspect of an embodiment of the present application provides a smart watch, characterized in that it includes:

[0026] A control circuit as described above; and

[0027] The case is used to package the control circuit.

[0028] A third aspect of an embodiment of the present application provides a wearable device, characterized in that it includes:

[0029] A control circuit as described above; and

[0030] The housing is used to package the control circuit.

[0031] The above-mentioned control circuit, smart watch and wearable device for automatic pointer correction include a sensor module, a main control module and a drive module. The real-time position of the pointer is obtained at every preset time period, and a feedback signal is output. Then, the real-time time is obtained according to the real-time position of the pointer. When the difference between the real-time time and the standard time of the location exceeds a preset threshold, a drive signal is output. Finally, the real-time position of the pointer is corrected according to the drive signal so that the real-time time displayed by the pointer is consistent with the standard time of the location. In this way, the pointer is positioned intelligently and adjusted and calibrated in real time. The control circuit can be universally applied to smart watches or other intelligent devices to obtain accurate time in real time. It has high practical value and solves the problem of large travel time error caused by the inability to accurately position the physical pointer in the smart watch, which requires frequent manual correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 A schematic diagram of the module structure of a control circuit for automatic pointer correction provided by the present application;

[0034] Figure 2 An exemplary circuit diagram of a sensor module in a control circuit for automatic pointer correction provided in one embodiment of the present application;

[0035] Figure 3 An exemplary circuit diagram of a sensor module in a control circuit for automatic pointer correction provided by another embodiment of the present application;

[0036] Figure 4 For the corresponding Figure 2Schematic diagram of the principle of the magnetically controlled switch used in the induction unit;

[0037] Figure 5 A schematic diagram of a unit of a main control module in a control circuit for automatic pointer correction provided by an embodiment of the present application;

[0038] Figure 6 A schematic diagram of the module structure of a control circuit for automatic pointer correction provided by another embodiment of the present application;

[0039] Figure 7 For the corresponding Figure 6 Schematic diagram of the internal structure of the time indication module. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] See also Figure 1 , a schematic diagram of the module structure of a control circuit for automatic pointer correction provided in an embodiment of the present application, for the sake of convenience of explanation, only the part related to the present embodiment is shown, which is described in detail as follows:

[0042] The above-mentioned control circuit for automatic pointer correction includes a sensor module 102 , a main control module 101 and a driving module 103 .

[0043] The sensor module 102 is connected to the pointer and is used to obtain the real-time position of the pointer every preset time period and output a feedback signal.

[0044] Specifically, the connection mode of the sensor module 102 and the pointer is a close connection, which can be connected in close distance through a medium such as a magnetic field, an electric field, and an acoustic field, and the real-time position of the pointer is detected. As is well known, the real-time position of the pointer is converted into real-time time as seen by the naked eye. Therefore, as long as the real-time position of the pointer is known, the real-time time indicated at a glance can be known. The real-time position of the pointer is detected every preset time period in order to position the pointer every time. When the deviation is large, it can be calibrated in time to enhance the user's experience and avoid delays due to inaccurate time, causing unnecessary trouble. Among them, the preset time period can be set according to specific needs; in this embodiment, a magnet representing a reference origin (which can be multiple reference origins) is installed on the wheel of the gear, and a magnetic control switch assembly is installed at the standard position where the magnet passes. The time it takes for the magnetic control switch assembly to conduct and output a feedback signal when the wheel rotates one circle, that is, the magnet is adjacent twice, is the preset time period.

[0045] Meanwhile, the pointers include an hour hand, a minute hand and a second hand. Of course, only the hour hand, or only the hour hand and the minute hand, may be provided as required.

[0046] The main control module 101 is connected to the sensor module 102, and is used to receive feedback signals and confirm the positioning position of the pointer according to the feedback signals. When the difference between the real time displayed by the pointer and the standard time of the location exceeds a preset threshold, a driving signal is output according to a specified algorithm.

[0047] Specifically, the main control module 101 has a database stored in advance, and the time in the database is the standard time of the location, including China time (Beijing time), US time, UK time, etc. When the main control module 101 receives the feedback signal, it first confirms the positioning position of the pointer according to the feedback time, thereby obtaining the real-time time, and at the same time calls the standard time of the location at this moment, and compares the real-time time displayed by the pointer with the standard time of the location. If the difference between the real-time time and the standard time of the location exceeds a preset threshold, for example, the preset threshold is defined as 1 minute, the standard time of the location at this moment is 14:15:00, and the real-time time displayed by the pointer at this moment is earlier than 14:14:00 or later than 14:16:00, the main control module 101 determines that the difference between the real-time time displayed by the pointer and the standard time of the location exceeds the preset threshold, and then outputs a drive signal to the drive module 103.

[0048] The driving module 102 is connected to the main control module 101 and is used to amplify the power of the driving signal and correct the real-time position of the pointer so that the real-time time displayed by the pointer is consistent with the standard time of the location.

[0049] Specifically, the driving module 102 includes a motor component: including but not limited to a single motor component, a dual motor component and a multi-motor component. The motor includes a synchronous motor, an asynchronous motor, an induction motor, a stepper motor, a servo motor, etc. The motor component mainly receives the driving signal (i.e., the clock frequency signal) output by the main control module 101, and converts it into a corresponding angular displacement, providing driving power for the gear train part, so as to adjust and calibrate the real-time position of the pointer so that the real-time time displayed by the pointer is consistent with the standard time of the location.

[0050] Figure 2 An example circuit of a sensor module in a control circuit for automatic pointer correction provided by an embodiment of the present application is shown. For ease of description, only the part related to the present embodiment is shown, which is described in detail as follows:

[0051] As an optional implementation, the sensor module 102 includes a sensing unit 1021 and a feedback unit 1022 .

[0052] The sensing unit 1021 is used to obtain the real-time position of the pointer every preset time period and output an electrical position signal.

[0053] Specifically, the sensing unit 1021 obtains the real-time position of the pointer through a medium such as a magnetic field, an electric field, or an acoustic field, obtains the real-time time indicated by the real-time position, and outputs an electrical position signal.

[0054] The feedback unit 1022 is connected to the sensing unit 1021 and is used to convert the position electrical signal into a feedback signal and output it.

[0055] Specifically, after receiving the position electrical signal output by the sensing unit 1021, the feedback unit 1022 converts the position electrical signal into a feedback signal recognizable by the main control module 101, so that the main control module 101 can know the real-time position of the pointer through the feedback signal to perform the next action.

[0056] For example, Figure 4 As shown, the sensing unit 1021 includes a passive magnetically controlled sensor and a magnetically controlled switch 1015 .

[0057] The passive magnetic control sensor is used to obtain the position of the reference magnetic source and convert it into a corresponding electrical signal.

[0058] In this embodiment, a passive magnetic control sensor is used. Since it is small in size and does not need its own power supply, this method is simple and easy to implement, and the passive magnetic control sensor can be set according to actual needs to obtain the position of the reference magnetic source body in the interval time period and output the corresponding electrical signal to the magnetic control switch 1015. For example, when the gear magnet is turned to the position of the magnetic control switch 1015, the magnetic control switch 1015 is connected, the circuit level changes, and a corresponding electrical signal is generated.

[0059] The magnetic control switch 1015 is closely connected to the passive magnetic control sensor, and is used to conduct when receiving the electrical signal output by the passive magnetic control sensor, and output a position electrical signal.

[0060] Specifically, the magnetic control switch 1015 is used in conjunction with a passive magnetic control sensor. When receiving a magnetic signal output by the passive magnetic control sensor, the spring 1017 of the magnetic control switch 1015 is connected to the switch contact 1018, that is, the magnetic control switch 1015 is turned on, and the conduction circuit outputs a position electrical signal. In addition, the magnetic control switch 1015 forms magnetic lines of force of the magnetic field through the pin 1016, and the magnetic control switch 1015 is also filled with an inert gas 1019 or a vacuum, which plays the role of medium transmission.

[0061] Exemplarily, the sensing unit 1021 includes but is not limited to an optical sensor device, an electrical sensor device, and an acoustic sensor device.

[0062] The feedback unit 1022 includes an eleventh resistor R11, a second reference voltage Rf1 and a logic gate LOG;

[0063] A first terminal of the eleventh resistor R11 is connected to a reference voltage, a second terminal of the eleventh resistor R11 and a first terminal of the second reference voltage Rf1 are connected to a first input terminal of a logic gate LOG, a second input terminal of the logic gate LOG is connected to the sensing unit 1021 , and an output terminal of the logic gate LOG is connected to the main control module 101 .

[0064] The logic gates include but are not limited to AND gates, OR gates, NAND gates and NOR gates, and are used to convert the position electrical signal into a feedback signal.

[0065] Figure 3 An example circuit of a sensor module in a control circuit for automatic pointer correction provided by another embodiment of the present application is shown. For ease of description, only the part related to the present embodiment is shown, which is described in detail as follows:

[0066] As an optional implementation, the feedback unit 1022 includes: a first capacitor C1, a second capacitor C2, a first resistor R1, a second resistor R2, a third resistor R3, a reference resistor Rf and a filter LB;

[0067] The first end of the second resistor R2 is connected to the sensing unit 1021, the second end of the second resistor R2 is connected to the first end of the first capacitor C1 and the first end of the third resistor R3, the second end of the third resistor R3 and the first end of the second capacitor C2 are connected to the first input end of the filter LB, the second end of the first capacitor C1 and the second end of the second capacitor C2 are grounded, the first end of the first resistor R1 is connected to the reference voltage, the second end of the first resistor R1 and the first end of the reference voltage Rf are connected to the second input end of the filter LB, and the second end of the reference voltage Rf and the output end of the filter LB are connected to the main control module 101.

[0068] Figure 5 An example circuit of a main control module in a control circuit for automatic pointer correction provided by an embodiment of the present application is shown. For ease of explanation, only the part related to the present embodiment is shown, which is described in detail as follows:

[0069] As an optional implementation, the main control module 101 includes a receiving unit 1011 , a comparing unit 1012 and an output unit 1013 .

[0070] The receiving unit 1011 is connected to the sensor module 102 and is used to receive a feedback signal.

[0071] Specifically, the receiving unit 1011 is connected to the feedback unit 1022 and is used to receive the feedback signal output by the feedback unit.

[0072] The comparison unit 1012 is connected to the receiving unit 1011, and is used to confirm the positioning position of the pointer according to the feedback signal, and compare the real-time time displayed by the pointer with the standard time of the location.

[0073] Specifically, the comparison unit 1012 obtains the location of the pointer according to the feedback signal, obtains the real-time time indicated by the pointer, and then compares the real-time time with the standard time of the location.

[0074] The output unit 1013 is connected to the comparison unit 1012, and is used to output a driving signal when the difference between the real time displayed by the pointer and the local standard time exceeds a preset threshold.

[0075] Specifically, if the difference between the real-time time and the standard time of the location exceeds a preset threshold, for example, the preset threshold is defined as 1 minute, the standard time of the location at this moment is 14:15:00, and the real-time time displayed by the pointer at this moment is earlier than 14:14:00 or later than 14:16:00, the output unit 1013 determines that the difference between the real-time time and the standard time of the location exceeds the preset threshold, and outputs a drive signal to the drive module 103.

[0076] The receiving unit 1011 , the comparing unit 1012 and the output unit 1013 are all implemented using existing circuit structures.

[0077] The main control module 101 includes but is not limited to the CPU system, program memory, data memory, various I / O ports, basic functional units (timer / counter / interrupt system, etc.), and the analog integrated circuits (such as amplifiers, filters, feedback circuits, reference source circuits and switch capacitor circuits, etc.) and digital integrated circuits (such as gate circuits, shaping circuits, etc.) that cooperate with it. It mainly provides signal processing (including feedback signal, compensation signal and spatial signal processing), logic control, power management, data storage and other functions for the entire mechanism.

[0078] Figure 6 The module structure of a control circuit for automatic pointer correction provided by an embodiment of the present application is shown. For the sake of convenience, only the part related to the present embodiment is shown, which is described in detail as follows:

[0079] As an optional implementation, the control circuit further includes a time indication module 104 connected to the driving module 103 and the sensing module 102 for providing a reference magnetic source.

[0080] Specifically, the time indication module 104 includes but is not limited to a center wheel component, an hour wheel component, a minute wheel component, a second wheel component or related transmission wheel train components, and also includes a reference magnetic source on the wheel train. The calibration part is mainly the hour hand, minute hand, second hand and other time indication parts, which provide a standard time angular displacement. At the same time, the actual position electrical signal is output to the sensor module 102 through the standard magnetic source on the wheel train.

[0081] It should be noted that Figure 6 The control circuit in Figure 1 A time indication module is added to the control circuit in FIG. 1 , so the functional description and principle description of the main control module 101, the sensor module 102 and the drive module 103 can be referred to in Figures 1 to 5 The embodiments of the present invention will not be described in detail here.

[0082] Figure 7 Shows the corresponding Figure 6 The internal structure of the time indication module includes a second wheel 2014, a minute wheel 2015, an hour wheel 2016, a rotor part 2011, a transmission wheel 2012, a splint 2013, a second hand 2019, a minute hand 2018 and an hour hand 2017. The second wheel 2014, the minute wheel 2015 and the hour wheel 2016 rotate around the same axis. After the rotor part 2011 drives the transmission wheel 2012 to rotate, the transmission wheel 2012 is linked to rotate the axis, thereby controlling the second wheel 2014, the minute wheel 2015 and the hour wheel 2016 to rotate; due to the rotation of the second wheel 2014, the minute wheel 2015 and the hour wheel 2016, the second hand 2019, the minute hand 2018 and the hour hand 2017 move the real-time position accordingly. It can be seen from the above description that once the real-time positions of the second hand 2019, the minute hand 2018 and the hour hand 2017 change, the real-time time indicated by them also changes accordingly.

[0083] The following combination Figure 1-Figure 7 The working principle of the above-mentioned automatic pointer correction control circuit is described as follows:

[0084] When the hour hand gear magnet turns to the position of the magnetic switch, the magnetic switch (or the Hall sensor works) is connected, the circuit generates a low electrode, and generates a corresponding electrical signal. Through the signal analysis of the feedback circuit, the standard signal frequency table is transmitted to the MCU, and compared with the system time source on the MCU. According to the comparison result, the specific deviation position of the gear is determined. If the deviation of the gear exceeds the standard, the microprocessor will generate a feedback signal through the feedback circuit, and output it to the motor component to give an additional motor rotation compensation, so as to achieve the purpose of automatic calibration of the hour hand.

[0085] If there are minute hand and second hand, their principles are the same as those of the hour hand, and will not be described in detail here.

[0086] The present application also provides a smart watch, comprising the control circuit and a watch case as described above, wherein the watch case is used to encapsulate the control circuit.

[0087] The present application also provides a wearable device, comprising the control circuit and a shell as described above, wherein the shell is used to encapsulate the control circuit.

[0088] Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. They include smart bracelets, smart glasses, etc.

[0089] In summary, a control circuit, smart watch and wearable device for automatic pointer correction in the embodiment of the present application include a sensor module, a main control module and a drive module, which obtains the real-time position of the pointer at every preset time period and outputs a feedback signal, then obtains the real-time time according to the real-time position of the pointer, and outputs a drive signal when the difference between the real-time time and the standard time of the location exceeds a preset threshold, and finally corrects the real-time position of the pointer according to the drive signal, so that the real-time time displayed by the pointer is consistent with the standard time of the location. In this way, the pointer is positioned intelligently and adjusted and calibrated in real time; the control circuit can be universally applied to smart watches or other intelligent devices to obtain accurate time in real time, with high practical value, and solves the problem of large travel time error caused by the inability to accurately position the physical pointer in the smart watch, which requires frequent manual correction.

[0090] Various embodiments are described herein for various devices, circuits, apparatuses, systems and / or methods. Many specific details are set forth to provide a thorough understanding of the overall structure, function, manufacture and use of the embodiments as described in the specification and shown in the drawings. However, those skilled in the art will appreciate that the embodiments may be implemented without such specific details. In other examples, well-known operations, parts and elements are described in detail so as not to make the embodiments in the specification difficult to understand. Those skilled in the art will appreciate that the embodiments herein and shown are non-limiting examples, and therefore it will be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.

[0091] References to "various embodiments", "in an embodiment", "one embodiment", or "an embodiment" throughout the specification, etc., mean that a particular feature, structure, or characteristic described with respect to an embodiment is included in at least one embodiment. Therefore, the appearance of the phrases "in various embodiments", "in some embodiments", "in an embodiment", or "in an embodiment", etc., in appropriate places throughout the specification, do not necessarily refer to the same embodiment. In addition, particular features, structures, or characteristics may be combined in any appropriate manner in one or more embodiments. Therefore, a particular feature, structure, or characteristic shown or described with respect to one embodiment may be combined in whole or in part with features, structures, or characteristics of one or more other embodiments without assuming that such a combination is not an illogical or non-functional limitation. Any directional references (e.g., plus, minus, upper, lower, up, down, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to help the reader understand the present disclosure, and do not create limitations, particularly with respect to the location, orientation, or use of the embodiments.

[0092] Although certain embodiments are described above with a certain degree of detail, those skilled in the art may make many changes to the disclosed embodiments without departing from the scope of the present disclosure. Connection references (e.g., attachment, coupling, connection, etc.) should be interpreted broadly and may include intermediate members between the connection of elements and relative motion between elements. Therefore, connection references do not necessarily imply that two elements are directly connected / coupled and are in a fixed relationship with each other. The use of "for example" throughout the specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the present disclosure, and the present disclosure is not limited to such examples. It is intended that all matters included in the above description or shown in the accompanying drawings should be interpreted as merely illustrative rather than restrictive. Changes in details or structure may be made without departing from the present disclosure.

[0093] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A control circuit for automatic pointer correction, characterized in that: include: A sensor module, connected to the pointer, for obtaining the real-time position of the pointer at every preset time period and outputting a feedback signal; A main control module, connected to the sensor module, for receiving the feedback signal, and confirming the location of the pointer according to the feedback signal, and outputting a driving signal when the difference between the real time displayed by the pointer and the standard time of the location exceeds a preset threshold; A driving module, connected to the main control module, for amplifying the power of the driving signal and correcting the real-time position of the pointer so that the real-time time displayed by the pointer is consistent with the standard time of the location; The sensor module comprises: a sensing unit, used to obtain the real-time position of the pointer at every preset time period and output an electrical position signal; and A feedback unit, connected to the sensing unit, for converting the position electrical signal into the feedback signal and outputting the feedback signal; The feedback unit comprises: A first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a reference resistor, and a filter; The first end of the second resistor is connected to the sensing unit, the second end of the second resistor is connected to the first end of the first capacitor and the first end of the third resistor, the second end of the third resistor and the first end of the second capacitor are connected to the first input end of the filter, the second end of the first capacitor and the second end of the second capacitor are grounded, the first end of the first resistor is connected to the reference voltage, the second end of the first resistor and the first end of the reference voltage are connected to the second input end of the filter, and the second end of the reference voltage and the output end of the filter are connected to the main control module.

2. The control circuit according to claim 1, characterized in that: The sensing unit comprises: A passive magnetic control sensor, used to obtain the position of the reference magnetic source body and convert it into a corresponding electrical signal; and The magnetically controlled switch is closely connected to the passive magnetically controlled sensor and is used for being turned on when receiving the magnetic signal output by the passive magnetically controlled sensor, and outputting the position electrical signal.

3. The control circuit according to claim 1, characterized in that: The sensing unit includes an optical sensor device, an electrical sensor device and an acoustic sensor device.

4. The control circuit according to claim 1, characterized in that: The main control module comprises: A receiving unit, connected to the sensor module, and configured to receive the feedback signal; a comparing unit connected to the receiving unit, and configured to confirm the location of the pointer according to the feedback signal, and compare the real time displayed by the pointer with the standard time of the location; and The output unit is connected to the comparison unit and is used to output a driving signal when the difference between the real time displayed by the pointer and the standard time of the location exceeds a preset threshold.

5. The control circuit according to claim 1, characterized in that: The driving module includes a single motor component, a dual motor component or a multi-motor component.

6. The control circuit according to claim 1, characterized in that: Also includes: The time indicating module is connected to the driving module and the sensing module and is used to provide a reference magnetic source.

7. A smart watch, characterized in that: include: A control circuit as claimed in any one of claims 1 to 6; and The case is used to package the control circuit.

8. A wearable device, characterized in that: include: A control circuit as claimed in any one of claims 1 to 6; and The housing is used to package the control circuit.

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