Error Automatic Correction System

Abstract

The present invention discloses an automatic error correction system, which is applicable to calibrating the pointer in an instrument system. It includes a pointer, a transmission structure, an MCU controller, an optocoupler and a stepping motor module; the transmission structure has a pointer gear, the pointer is installed on the transmission gear, and the stepping motor module is controlled by the MCU controller and drives the transmission structure to drive the pointer to rotate forward or backward; the MCU controller correspondingly inputs positive and reverse pulse currents to the stepping motor module, and at the same time controls the optocoupler to turn on, so that the pointer rotates forward and backward to the zero position to achieve forward and reverse zero calibration. Thus, the present invention realizes the two-way calibration of the pointer in the forward and reverse directions to ensure the accuracy of the pointer operation and achieve automatic error correction.

Description

Technical Field

[0001] The present invention relates to a pointer-type instrument system, and particularly to an automatic error correction system for correcting the pointer in the instrument system. Background Art

[0002] In the existing pointer-type instrument systems, the pointer rotation is realized by driving a transmission structure composed of multiple-stage gears through a motor, and then the real-time information is displayed. In this way of realizing the pointer rotation through a mechanical transmission structure, during the long-term use process, the wear in the gear transmission process and the precision of the gears will cause a certain error in the pointer indication. If this error is not corrected in time, it will accumulate to a larger value, making the pointer lose the meaning of indication.

[0003] Therefore, there is an urgent need for an automatic error correction system that can correct the pointer to ensure the accuracy of the pointer indication. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic error correction system that can correct the pointer to ensure the accuracy of the pointer indication.

[0005] To achieve the above object, the present invention provides an automatic error correction system applicable to calibrating the pointer in an instrument system, which includes a pointer, a transmission structure, an MCU controller, an optocoupler, and a stepping motor module; the transmission structure includes a pointer gear, the pointer gear is connected to the pointer, and the pointer gear drives the pointer to rotate synchronously. A zeroing light passing hole is penetrated through the pointer gear; the optocoupler is electrically connected to the MCU controller, the optocoupler includes a transmitting end and a receiving end, the transmitting end and the receiving end are respectively located on both sides of the pointer gear, and the transmitting end and the receiving end are arranged opposite to each other; when the pointer is in the zero position, the transmitting end, the zeroing light passing hole, and the receiving end are sequentially opposite and located on the same straight line, and the signal emitted by the transmitting end passes through the zeroing light passing hole and is received by the receiving end; the stepping motor module is in transmission connection with the transmission structure, and the stepping motor module is electrically connected to the MCU controller, and the MCU controller selectively outputs a forward rotation pulse current and a reverse pulsating current; the MCU controller inputs the forward rotation pulse current to the stepping motor module, and at the same time the MCU controller controls the optocoupler to turn on. The stepping motor module drives the pointer to rotate forward through the transmission structure until the receiving end receives the signal emitted by the transmitting end and stops the pointer from rotating, forming a forward zeroing correction for the pointer to rotate forward to the zero position; the MCU controller inputs the reverse rotation pulse current to the stepping motor module, and at the same time the MCU controller controls the optocoupler to turn on. The stepping motor module drives the pointer to rotate reversely through the transmission structure until the receiving end receives the signal emitted by the transmitting end and stops the pointer from rotating, forming a reverse zeroing correction for the pointer to rotate reversely to the zero position.

[0006] Preferably, the automatic error correction system of the present invention further includes a sensor for collecting information, the sensor is electrically connected to the MCU controller, and the sensor transmits the collected information to the MCU controller in real time; the information of the sensor received by the MCU controller currently is the current information, and the information of the sensor received by the MCU controller last time is the past information; the MCU controller controls the stepping motor module to drive the pointer to rotate to the real-time position corresponding to the current information through the transmission structure.

[0007] Preferably, the transmission structure of the automatic error correction system of the present invention includes multiple levels of gears that are sequentially meshed with each other. The starting end of the multiple levels of gears is the first-level gear, and the ending end of the multiple levels of gears is the pointer gear.

[0008] Preferably, the stepping motor module of the error automatic correction system of the present invention includes a rotor magnet, a first coil motor, and a second coil motor. The rotor magnet is fixedly connected to the first-stage gear. The first coil motor is magnetically drivenly connected to the rotor magnet, and the second coil motor is magnetically drivenly connected to the rotor magnet. The MCU controller compares the current information with the past information. When the comparison result becomes larger, the MCU controller independently controls the first coil motor to operate according to the comparison result and drives the pointer to rotate forward through the rotor magnet and the transmission structure. The MCU controller compares the current information with the past information. When the comparison result becomes smaller, the MCU controller independently controls the second coil motor to operate according to the comparison result and drives the pointer to rotate reversely through the rotor magnet and the transmission structure.

[0009] Preferably, the first coil motor of the error automatic correction system of the present invention includes a first stator sheet and a first coil wound around the first stator sheet. The first coil is electrically connected to the MCU controller. The second coil motor includes a second stator sheet and a second coil wound around the second stator sheet. The second coil is electrically connected to the MCU controller. When the comparison result becomes larger, the MCU controller inputs a forward rotation pulse current to the first coil. The first coil motor generates a magnetic field and drives the first-stage gear to rotate through the rotor magnet. The first-stage gear rotates and drives the pointer to rotate forward to the real-time position corresponding to the current information through the transmission structure. When the comparison result becomes smaller, the MCU controller inputs a reverse rotation pulse current to the second coil. The second coil motor generates a magnetic field and drives the first-stage gear to rotate through the rotor magnet. The first-stage gear rotates and drives the pointer to rotate reversely to the real-time position corresponding to the current information through the transmission structure.

[0010] Preferably, the first coil motor and the second coil motor of the error automatic correction system of the present invention are arranged side by side. The free ends of the first stator sheet and the second stator sheet form two concentric circles with different diameters. The two concentric circles with different diameters are arranged oppositely and form an S / N electromagnetic field area. The rotor magnet is fixedly connected to the first-stage gear and is located in the S / N electromagnetic field area.

[0011] Preferably, the sensor of the error automatic correction system of the present invention is a temperature sensor, a humidity sensor, a pressure sensor, a barometric pressure sensor, a speed sensor, a liquid level sensor, or a radio clock receiver.

[0012] Preferably, at least one detection light-passing hole is also formed through the pointer gear of the error automatic correction system of the present invention. The detection light-passing hole and the zeroing light-passing hole are located on the same circle with the center of the pointer gear as the center of the circle. Each detection light-passing hole corresponds to a standard pointer position. For example, when the pointer rotates to the standard pointer position, the MCU controller controls the photoelectric coupler to turn on. If the receiving end can receive the signal emitted by the transmitting end passing through the detection light-passing hole, it means that the rotation of the pointer has no error. If the receiving end fails to receive the signal emitted by the transmitting end passing through the detection light-passing hole when the pointer rotates to the standard pointer position, it means that the rotation of the pointer has an error. At this time, the MCU controller controls the stepping motor module to perform the forward zeroing correction and the reverse zeroing correction in sequence.

[0013] Compared with the prior art, the present invention can perform two-way correction of the pointer in the forward and reverse directions to ensure the accuracy, fast automatic correction, and error correction of the pointer operation. Specifically, (1) when the MCU controller inputs a forward rotation pulse current to the stepping motor module, at the same time, the MCU controller also controls the photoelectric coupler to turn on. The stepping motor module drives the pointer to rotate forward through the transmission structure until the receiving end of the photoelectric coupler receives the signal emitted by the transmitting end and stops the rotation of the pointer. Since the signal emitted by the transmitting end of the photoelectric coupler can pass through the zeroing light-passing hole and be received by the receiving end only when the pointer is at the zero position, a forward zeroing correction for the pointer to rotate forward to the zero position is thus formed, that is, the pointer rotates forward to the zero position under the drive of the stepping motor module and the transmission structure, thereby realizing the forward zeroing correction of the pointer. (2) When the MCU controller inputs a reverse rotation pulse current to the stepping motor module, at the same time, the MCU controller also controls the photoelectric coupler to turn on. The stepping motor module drives the pointer to rotate reversely through the transmission structure until the receiving end of the photoelectric coupler receives the signal emitted by the transmitting end and stops the rotation of the pointer. Similarly, since the signal emitted by the transmitting end of the photoelectric coupler can pass through the zeroing light-passing hole and be received by the receiving end only when the pointer is at the zero position, a reverse zeroing correction for the pointer to rotate reversely to the zero position is thus formed, that is, the pointer rotates reversely to the zero position under the drive of the stepping motor module and the transmission structure, thereby realizing the reverse zeroing correction of the pointer. In summary, the present invention realizes the forward and reverse correction of the pointer by performing forward zeroing correction and reverse zeroing correction on the pointer, ensures the accuracy of the pointer indication, has strong practicability, and is very suitable for wide promotion and use in pointer-type instrument systems. Description of the Drawings

[0014] Figure 1 is a schematic block diagram of the principle of the error automatic correction system of the present invention.

[0015] Figure 2 is a schematic structural diagram of the cooperation between the pointer and the instrument panel of the present invention.

[0016] Figure 3 This is a perspective view of the pointer gear of the present invention.

[0017] Figure 4 is Figure 3 a side structure diagram of

[0018] Figure 5 This is a schematic diagram of the cooperation between the optocoupler, zero-return light through-hole, MCU controller and stepper motor system of the present invention.

[0019] Figure 6 This is a schematic diagram of the signal emitted by the optocoupler passing through the detection light through-hole after the pointer of the present invention rotates to the standard pointer position.

[0020] Figure 7 This is a schematic diagram of the signal emitted by the optocoupler not passing through the detection light through-hole after the pointer of the present invention rotates to the standard pointer position.

[0021] Figure 8 This is a schematic diagram of the assembly structure of the transmission structure, first coil motor and second coil motor of the present invention.

[0022] Figure 9 This is a schematic diagram of the structure in which the first stator sheet and the second stator sheet of the present invention are arranged side by side.

[0023] Figure 10 This is a schematic diagram of the structure in which the first coil motor and the second coil motor of the present invention are arranged side by side. Detailed implementation manners

[0024] Next, in combination with specific implementation examples and the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described, and the technical solutions of the present invention will be elaborated. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application. Next, a detailed description will be given of the specific implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below. Now, the embodiments of the present invention will be described with reference to the accompanying drawings, and like reference numerals in the drawings represent like elements.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0026] As Figure 1 - Figure 5 As shown, the error automatic correction system 100 of the present invention is used to calibrate the pointer in the instrument system. The error automatic correction system includes a pointer 1, a transmission structure 2, an MCU controller 3, an optocoupler 4, and a stepping motor module 5. When indicating, the pointer 1 of the present invention rotates relative to the instrument panel 1A, and the instrument panel 1A of the present invention has identification information 11 for reading current information; specifically, the identification information 11 is at least one of scale information, digital information, letter information, pattern information, or shape information; as Figure 2 shown, an embodiment in which the identification information 11 is scale information is given. The transmission structure 2 of the present invention includes a pointer gear 21, which is connected to the pointer 1, and the pointer gear 21 drives the pointer 1 to rotate synchronously; a zeroing light passing hole 22 is formed through the pointer gear 21 of the present invention. The optocoupler 4 of the present invention is electrically connected to the MCU controller 3. The optocoupler 4 of the present invention includes a transmitting end 41 and a receiving end 42. The transmitting end 41 and the receiving end 42 are respectively located on both sides of the pointer gear 21, and the transmitting end 41 and the receiving end 42 of the optocoupler 4 are arranged opposite to each other. When the pointer 1 of the present invention is in the zero position, the transmitting end 41, the zeroing light passing hole 22, and the receiving end 42 of the optocoupler 4 are sequentially opposite and located on the same straight line (as Figure 5As shown in the figure, since the three are on the same straight line at this time, the signal transmitted by the transmitter 41 can reach the receiver 42 without obstruction. That is, the signal transmitted by the transmitter 41 passes through the zero-return light hole 22 and is received by the receiver 42. The stepping motor module 5 of the present invention is drivingly connected to the transmission structure 2, and the stepping motor module 5 of the present invention is electrically connected to the MCU controller 3, and the MCU controller 3 selectively outputs a forward rotation pulse current and a reverse pulsating current. As can be seen from the above, the present invention can perform two-way correction of the pointer 1 in the forward and reverse directions to ensure the smoothness and accuracy of the operation of the pointer 1. Specifically, (1) when a forward rotation pulse current is input to the stepping motor module 5 through the MCU controller 3, at the same time, the MCU controller 3 also controls the optocoupler 4 to turn on. The stepping motor module 5 drives the pointer 1 to rotate forward through the transmission structure 2 until the receiver 42 of the optocoupler 4 receives the signal transmitted by the transmitter 41 and stops the pointer 1 from rotating. Since the signal transmitted by the transmitter 41 of the optocoupler 4 can pass through the zero-return light hole 22 and be received by the receiver 42 only when the pointer 1 is at the zero position; therefore, a forward zero-return correction for the pointer 1 to rotate forward to the zero position is formed, that is, the pointer 1 rotates forward to the zero position under the drive of the stepping motor module 5 and the transmission structure 2, thus realizing the forward zero-return correction of the pointer 1. (2) When a reverse rotation pulse current is input to the stepping motor module 5 through the MCU controller 3, at the same time, the MCU controller 3 also controls the optocoupler 4 to turn on. The stepping motor module 5 drives the pointer 1 to rotate reversely through the transmission structure 2 until the receiver 42 of the optocoupler 4 receives the signal transmitted by the transmitter 41 and stops the pointer 1 from rotating. Similarly, since the signal transmitted by the transmitter 41 of the optocoupler 4 can pass through the zero-return light hole 22 and be received by the receiver 42 only when the pointer 1 is at the zero position; therefore, a reverse zero-return correction for the pointer 1 to rotate reversely to the zero position is formed, that is, the pointer 1 rotates reversely to the zero position under the drive of the stepping motor module 5 and the transmission structure 2, thus realizing the reverse zero-return correction of the pointer 1. It should be noted that (1) and (2) above do not represent their sequence. It should be understood that (1) can be executed first and then (2), or it can be understood that (2) is executed first and then (1), but (1) and (2) cannot be executed simultaneously. In summary, the present invention realizes the forward and reverse correction of the pointer by performing forward zero-return correction and reverse zero-return correction on the pointer, ensuring the accuracy of the pointer indication.

[0027] It should be noted that the zero position of the present invention is the position when the pointer 1 points to the identification information 11 with a value of 0; Figure 2The pointer 1 therein is exactly located at the zero position. When the identification information 11 on the dashboard 1A has positive and negative values, usually the left side of the zero position is negative and the right side is positive. When the identification information 11 on the dashboard 1A does not have negative values, usually the zero position is the minimum value. The above briefly describes the size relationship and indication rules between the pointer 1 of the present invention and the identification information 11 on the dashboard 1A; as can be seen from the above description, the size relationship and indication rules between the pointer 1 and the identification information 11 on the dashboard 1A are exactly the same as those in the prior art, which belong to the common general knowledge in this field and will not be elaborated in detail here.

[0028] Combined with Figure 3 - Figure 5 As shown, preferably, in order to further improve the accuracy of pointer calibration of the present invention, and thus improve the accuracy of pointer operation. For this reason, the present invention also has a compensation system for compensating the error of the pointer. The compensation system is specifically as follows: at least one detection light passing hole 23 is also penetrated through the pointer gear 21 of the present invention, and the detection light passing hole 23 and the zeroing light passing hole 22 are located on the same circle with the center of the pointer gear 21 as the center of the circle, and each detection light passing hole 23 corresponds to a standard pointer position. Preferably, the angles between adjacent detection light passing holes 23 are the same.

[0029] Continuing to combine Figure 3 - Figure 5 As shown, specifically, when the pointer 1 rotates to the standard pointer position, the MCU controller 3 controls the optocoupler 4 to turn on, and the receiving end 42 can receive the signal transmitted by the transmitting end 41 passing through the detection light passing hole 22, then the rotation of the pointer 21 has no error; for example, when the pointer 1 rotates to the standard pointer position, the MCU controller 3 controls the optocoupler 4 to turn on, and the receiving end 42 fails to receive the signal transmitted by the transmitting end 41 passing through the detection light passing hole 22, then the rotation of the pointer 1 has an error. At this time, the MCU controller 3 controls the stepping motor module 5 to perform the forward zeroing correction and the reverse zeroing correction in sequence. In order to further elaborate the error compensation system, taking the Figure 3 、 Figure 4 and Figure 8 shown embodiment as an example for further illustration, Figure 3 and Figure 4 give an embodiment of the present invention having three detection light passing holes 23. For the convenience of description, the three detection light passing holes 23 are respectively located at Figure 4 and Figure 8The labels in it are 23A, 23B, and 23C from left to right, namely the detection light-transmitting hole 23A, the detection light-transmitting hole 23B, and the detection light-transmitting hole 23C. The included angle between the detection light-transmitting hole 23A and the detection light-transmitting hole 23B is 1°, and the included angle between the detection light-transmitting hole 23B and the detection light-transmitting hole 23C is also 1°. At the same time, the pointer 1 of the present invention is defined to indicate the temperature (unit: °C), and the standard pointer position corresponding to the detection light-transmitting hole 23A is defined as 20 °C, the standard pointer position corresponding to the detection light-transmitting hole 23B is defined as 25 °C, and the standard pointer position corresponding to the detection light-transmitting hole 23C is defined as 30 °C. When specifically implemented: (1), combined with Figure 6 As shown, when the temperature indicated by the pointer 1 on the dashboard is 20 °C, the MCU controller 3 controls the optocoupler 4 to turn on, and the receiving end 42 can receive the signal transmitted by the transmitting end 41 passing through the detection light-transmitting hole 22A. Then the temperature of 20 °C indicated by the pointer 1 at this time is standard, and there is no error in the pointer 1. The MCU controller 3 drives the pointer 1 to indicate real-time information by controlling the stepper motor module 5 according to normal instructions; (2), combined with Figure 7 As shown, when the temperature indicated by the pointer 1 on the dashboard is 20 °C, the MCU controller 3 controls the optocoupler 4 to turn on, and the receiving end 42 fails to receive the signal of the transmitting end 41, indicating that the signal transmitted by the transmitting end 41 is blocked by the pointer gear 21. Furthermore, it shows that the detection light-transmitting hole 22A is not on the connection straight line between the transmitting end 41 and the receiving end 42, so that the signal emitted by the transmitting end 41 cannot pass through the detection light-transmitting hole 22A and be received by the receiving end 42. Therefore, there is an error in the rotation of the pointer gear 21 at this time and correction is required. So the temperature of 20 °C indicated by the pointer 1 at this time is inaccurate, and there is an error 1 in the indication of the pointer 1 (it should be noted that the pointer 1 rotates synchronously with the pointer gear, and if there is an error in the rotation of the pointer gear, it will inevitably lead to an error in the indication of the pointer 1); when the system of the present invention determines that there is an error in the indication of the pointer 1, the MCU controller 3 controls the stepper motor module 5 to perform the forward zero correction and reverse zero correction on the pointer 1 described in detail above, so that the error of the pointer 1 can be compensated and corrected, and further ensure the accurate indication of the subsequent pointer 1. The implementation method corresponding to the standard pointer position of 25 °C for the detection light-transmitting hole 23B and the implementation method corresponding to the standard pointer position of 30 °C for the detection light-transmitting hole 23C are the same as the implementation method corresponding to the standard pointer position of 20 °C for the detection light-transmitting hole 23A described above, and will not be elaborated here.

[0030] As Figure 1As shown, in order to further improve the accuracy of the indication of pointer 1, the acquisition of the real-time information to be indicated by the present invention is realized through a sensor. Specifically, the error automatic correction system of the present invention further includes a sensor 6 for acquiring information, and the sensor 6 is electrically connected to the MCU controller 3. The sensor 6 transmits the acquired information to the MCU controller 3 in real time; the information of the sensor 6 received by the MCU controller 3 currently is the current information, and the information of the sensor 6 received by the MCU controller 3 last time is the past information; the MCU controller 3 controls the stepping motor module 5 to drive the pointer 1 to rotate to the real-time position corresponding to the current information through the transmission structure 2.

[0031] As Figure 1 and Figure 8 shown, the transmission structure 2 of the present invention includes multiple levels of gears that mesh with each other in sequence. The starting end of the multiple levels of gears is the first-level gear 2A, and the ending end of the multiple levels of gears is the pointer gear 21. Specifically, as Figure 8 shown, a specific structure of the transmission structure 2 of the present invention is given. The transmission structure 2 is a four-level gear structure; specifically, the transmission structure 2 includes a first-level gear 2A, a second-level gear 2B, a third gear 2C, and a pointer gear 21 as the fourth-level gear that mesh with each other in sequence. Those skilled in the art can add any number of gears between the first-level gear 2A and the pointer gear 2B according to the actual situation requirements to obtain what is needed. This way of increasing or decreasing is a technique well known to those skilled in the art according to their needs and will not be elaborated here.

[0032] As Figure 1 and Figure 5 - Figure 10As shown, preferably, the stepping motor module 5 of the present invention includes a rotor magnet 51, a first coil motor 52 and a second coil motor 53; the rotor magnet 51 of the present invention is fixedly connected to the first-stage gear 2A, the first coil motor 52 is magnetically drivenly connected to the rotor magnet 51, and the second coil motor 53 is magnetically drivenly connected to the rotor magnet 51. The MCU controller 3 of the present invention compares the current information with the past information. When the MCU controller 3 compares the current information with the past information and the comparison result becomes larger, the MCU controller 3 independently controls the first coil motor 52 to work according to the comparison result and drives the pointer 1 to rotate forward through the rotor magnet 51 to drive the transmission structure 2. When the MCU controller 3 compares the current information with the past information and the comparison result becomes smaller, the MCU controller 3 independently controls the second coil motor 53 to work according to the comparison result and drives the pointer 1 to rotate reversely through the rotor magnet 51 to drive the transmission structure 2. It can be seen that the present invention uses a sensor 6 that can be accurate and responsive to obtain the current information, and at the same time uses a precision mechanical transmission structure 2 mainly composed of gears to drive the pointer 1 to rotate, so as to accurately, quickly and sensitively present the current information obtained by the sensor 6 through the rotation of the pointer 1. More specifically, the present invention compares the current information collected by the sensor 6 with the past information through the MCU controller 3; and selects to independently control the first coil motor 52 to work and drive the pointer 1 to rotate forward to the real-time position corresponding to the current information through the transmission structure 2; or selects to independently control the second coil motor 53 to work and drive the pointer 1 to rotate reversely to the real-time position corresponding to the current information through the transmission structure 2; that is, through the cooperation of the first coil motor 52, the second coil motor 53, the transmission structure 2 and the MCU controller 3, the present invention can, on the one hand, quickly and sensitively realize the forward and reverse rotation of the pointer 1, and on the other hand, make the pointer 1 rotate to the real-time position corresponding to the current information with the smallest rotation amplitude through forward rotation or reverse rotation. Therefore, the present invention can also make the pointer 1 accurate in indication, and at the same time has the functions of fast response, sensitivity and forward and reverse rotation, which is very suitable for wide promotion and use, especially suitable for replacing the existing instrument type indicating device.

[0033] Further, as Figure 8 - Figure 10As shown, the first coil motor 52 of the present invention includes a first stator sheet 521 and a first coil 522 wound around the first stator sheet 521. The first coil 51 is electrically connected to the MCU controller 3. Specifically, the starting end of the first coil 522 is electrically connected to the terminal post 523 on the first stator sheet 521; the ending end of the first coil 522 is electrically connected to the terminal post 524 on the first stator sheet 521; the terminal posts 523 and 524 are correspondingly connected to the pins on the MCU controller 3. The second coil motor 53 of the present invention includes a second stator sheet 531 and a second coil 532 wound around the second stator sheet 531. The second coil 532 is electrically connected to the MCU controller 3. Specifically, the starting end of the second coil 532 is electrically connected to the terminal post 533 on the second stator sheet 531; the ending end of the second coil 532 is electrically connected to the terminal post 534 on the second stator sheet 531; the terminal posts 533 and 534 are correspondingly connected to the pins on the MCU controller 3. The MCU controller 3 of the present invention compares the current information with the past information. When the comparison result becomes larger, the MCU controller 3 inputs a forward rotation pulse current to the first coil 522. The first coil motor 52 generates a magnetic field and drives the first-stage gear 2A to rotate through the rotor magnet 51. The first-stage gear 2A rotates and drives the pointer gear 21 through the transmission structure 2 to synchronously drive the pointer 1 to rotate forward. When the comparison result becomes smaller, the MCU controller 3 of the present invention inputs a reverse rotation pulse current to the second coil 532. The second coil motor 53 generates a magnetic field and drives the first-stage gear 2A to rotate through the rotor magnet 51. The first-stage gear 2A rotates and drives the pointer gear 21 through the transmission structure 2 to synchronously drive the pointer 1 to rotate reversely. Thus, it can be seen that when the present invention is in use, when the MCU controller 3 compares the current information with the past information and the comparison result becomes larger, the pointer 1 can reach the real-time position corresponding to the current information by rotating forward, and the forward rotation of the pointer 1 is also the direction with the smallest adjustment amplitude. Specifically, at this time, the MCU controller 3 inputs a forward rotation pulse current to the first coil 522. After the first coil 522 is passed through the forward rotation pulse current, a magnetic field is generated. The direction of this magnetic field can be known according to the winding direction of the first coil 522 and the direction of the forward rotation pulse current in combination with the right-hand rule. The magnetic field generated after the first coil 522 is passed through the forward rotation pulse current repels the magnetic field generated by the rotor magnet 51 fixed on the first-stage gear 2A, thereby pushing the first-stage gear 2A to rotate (the rotor magnet rotates synchronously with the first-stage gear). The first-stage gear 2A rotates and drives the pointer 1 to quickly rotate forward to the real-time position corresponding to the current information, thereby realizing the characteristics of accurate indication, fast response, and sensitive information display of the present invention.When the present invention is in use, when the MCU controller 3 compares the current information with the past information and the comparison result becomes smaller, the pointer 1 can reach the real-time position corresponding to the current information by rotating reversely, and the reverse rotation of the pointer 1 is also the direction with the smallest adjustment amplitude; specifically, at this time, the MCU controller 3 inputs a reverse pulse current to the second coil 532. After the second coil 532 is passed through the reverse pulse current, a magnetic field is generated. The direction of this magnetic field can be known according to the winding direction of the second coil 532 and the direction of the reverse pulse current in combination with the right-hand rule; the magnetic field generated after the second coil 532 is passed through the reverse pulse current repels the magnetic field generated by the rotor magnet 51 fixed on the first-stage gear 2A, thereby driving the first-stage gear 2A to rotate (the rotor magnet rotates synchronously with the first-stage gear). The first-stage gear 2A rotates to drive the pointer 1 to quickly rotate reversely to the real-time position corresponding to the current information, thereby realizing the characteristics of accurate indication, fast response and sensitivity of the information display of the present invention. Thus, through the cooperation of the first coil motor 52 and the second coil motor 53 with specific structures, the rotor magnet 51, the MCU controller 3 and the transmission structure 2, the present invention quickly and conveniently realizes the function that the pointer 1 can realize forward and reverse rotation on the basis of only one transmission structure, with simple structure and easy to use; it can achieve the design of ultra-thin and ultra-small volume.

[0034] It should be noted that the first coil motor 52 and the second coil motor 53 of the present invention are respectively controlled by the MCU control 3 and work independently, that is, when the first coil motor 52 works, the second coil motor 53 stops, and when the second coil motor 53 works, the first coil motor 52 stops. At the same time, when the first coil motor 52 of the present invention works, the rotation direction of the driven first-stage gear 2A is the first direction; when the second coil motor 53 of the present invention works, the rotation direction of the driven first-stage gear 2A is the second direction; the first direction and the second direction are always opposite, that is, one direction is forward and the other must be reverse. In addition, the magnitude of the rotation amplitude of the driving pointer 1 of the present invention is determined by the pulse time of the corresponding forward rotation pulse current and reverse rotation pulse current, which is common knowledge in this field and will not be elaborated in detail here.

[0035] Specifically, the winding directions of the first coil 522 and the second coil 532 of the present invention are the same, and the current directions of the forward rotation pulse current and the reverse rotation pulse current are the same. Only the directions of the magnetic fields generated on the stator sheet are opposite, thereby changing the rotation direction of the rotor magnet 51. This design can make the first coil motor 52 and the second coil motor 53 have exactly the same structure design, greatly reducing the production and manufacturing costs.

[0036] Such as Figure 8 - Figure 10As shown, preferably, the first coil motor 52 and the second coil motor 53 of the present invention are arranged side by side. The free ends of the first stator sheet 521 and the second stator sheet 531 form a concentric circle structure with two different diameters. The concentric circle structures with two different diameters are arranged oppositely and form an S / N electromagnetic field region 51A. The rotor magnet 51 is fixedly connected to the first-stage gear 2A and is located within the S / N electromagnetic field region 51A.

[0037] Preferably, the sensor 6 of the present invention is a temperature sensor, a humidity sensor, a pressure sensor, a barometric pressure sensor, a speed sensor, a liquid level sensor, or a radio clock receiver. When the sensor 6 of the present invention is a temperature sensor, the pointer 1 of the present invention indicates the current temperature information. When the sensor 6 of the present invention is a humidity sensor, the pointer 1 of the present invention indicates the current humidity information. When the sensor 6 of the present invention is a pressure sensor, the pointer 1 of the present invention indicates the current pressure information. When the sensor 6 of the present invention is a barometric pressure sensor, the pointer 1 of the present invention indicates the current barometric pressure information. When the sensor 6 of the present invention is a speed sensor, the pointer 1 of the present invention indicates the current speed information. When the sensor 6 of the present invention is a liquid level sensor, the pointer 1 of the present invention indicates the current water level or oil quantity and other information. When the sensor 6 of the present invention is a radio clock receiver, the pointer 1 of the present invention indicates the current time information.

[0038] In addition, the transmission method between the meshing gears involved in the present invention, the working principles of the MCU controller for controlling the coil motor and the optocoupler are all well-known to those of ordinary skill in the art, and will not be described in detail herein.

[0039] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved. At the same time, the above-disclosed are only the preferred embodiments of the present invention, and of course cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. An automatic error correction system, applicable to calibrating the pointer in an instrument system, characterized in that, Comprising: A pointer; A transmission structure, the transmission structure includes a pointer gear, the pointer gear is connected to the pointer, the pointer gear drives the pointer to rotate synchronously, and a zeroing light-passing hole is penetrated through the pointer gear; An MCU controller; An optocoupler, the optocoupler is electrically connected to the MCU controller, the optocoupler includes a transmitting end and a receiving end, the transmitting end and the receiving end are respectively located on both sides of the pointer gear, and the transmitting end and the receiving end are arranged opposite to each other; when the pointer is in the zero position, the transmitting end, the zeroing light-passing hole and the receiving end are sequentially opposite and located on the same straight line, and the signal emitted by the transmitting end passes through the zeroing light-passing hole and is received by the receiving end; A stepper motor module, the stepper motor module is in transmission connection with the transmission structure, the stepper motor module is electrically connected to the MCU controller, and the MCU controller selectively outputs a forward rotation pulse current and a reverse pulsating current; The MCU controller inputs the forward rotation pulse current to the stepper motor module, and at the same time the MCU controller controls the optocoupler to turn on. The stepper motor module drives the pointer to rotate forward through the transmission structure until the receiving end receives the signal emitted by the transmitting end and stops the pointer from rotating, forming a forward zeroing correction for the pointer to rotate forward to the zero position; The MCU controller inputs the reverse rotation pulse current to the stepper motor module, and at the same time the MCU controller controls the optocoupler to turn on. The stepper motor module drives the pointer to rotate reversely through the transmission structure until the receiving end receives the signal emitted by the transmitting end and stops the pointer from rotating, forming a reverse zeroing correction for the pointer to rotate reversely to the zero position.

2. The automatic error correction system according to claim 1, characterized in that, It further includes a sensor for collecting information, the sensor is electrically connected to the MCU controller, and the sensor transmits the collected information to the MCU controller in real time; the information of the sensor received by the MCU controller currently is the current information, and the information of the sensor received by the MCU controller last time is the past information; the MCU controller controls the stepper motor module to drive the pointer to rotate to the real-time position corresponding to the current information through the transmission structure.

3. The automatic error correction system according to claim 2, characterized in that, The transmission structure includes multiple levels of gears that are sequentially meshed with each other. The starting end of the multiple levels of gears is the first-level gear, and the ending end of the multiple levels of gears is the pointer gear.

4. The automatic error correction system according to claim 3, characterized in that, The stepper motor module includes a rotor magnet, a first coil motor and a second coil motor, the rotor magnet is fixedly connected to the first-stage gear, the first coil motor is magnetically connected to the rotor magnet, and the second coil motor is magnetically connected to the rotor magnet; the MCU controller compares the current information with the past information; when the comparison result becomes larger, the MCU controller independently controls the first coil motor to work according to the comparison result and drives the transmission structure to drive the pointer to rotate forward through the rotor magnet; the MCU controller compares the current information with the past information; when the comparison result becomes smaller, the MCU controller independently controls the second coil motor to work according to the comparison result and drives the transmission structure to drive the pointer to rotate reversely through the rotor magnet.

5. The automatic error correction system according to claim 4, characterized in that, The first coil motor includes a first stator sheet and a first coil wound on the first stator sheet, and the first coil is electrically connected to the MCU controller; the second coil motor includes a second stator sheet and a second coil wound on the second stator sheet, and the second coil is electrically connected to the MCU controller; when the comparison result becomes larger, the MCU controller inputs the forward pulse current to the first coil, the first coil motor generates a magnetic field and drives the first-stage gear to rotate through the rotor magnet, and the first-stage gear rotates and drives the pointer to rotate forward to the real-time position corresponding to the current information through the transmission structure; when the comparison result becomes smaller, the MCU controller inputs the reverse pulse current to the second coil, the second coil motor generates a magnetic field and drives the first-stage gear to rotate through the rotor magnet, and the first-stage gear rotates and drives the pointer to rotate reversely to the real-time position corresponding to the current information through the transmission structure.

6. The automatic error correction system according to claim 5, characterized in that, The first coil motor and the second coil motor are arranged side by side, and the free ends of the first stator plate and the second stator plate are two concentric circle structures with different diameters. The two concentric circle structures with different diameters are arranged opposite to each other and form an S / N electromagnetic field area. The rotor magnet is fixedly connected to the first-stage gear and is located in the S / N electromagnetic field area.

7. The automatic error correction system according to claim 2, characterized in that, The sensor is a temperature sensor, a humidity sensor, a pressure sensor, an air pressure sensor, a speed sensor, a liquid level sensor or a radio wave clock receiver.

8. The automatic error correction system according to claim 1, characterized in that, The pointer gear is also provided with at least one detection light-through hole, the detection light-through hole and the zeroing light-through hole are located on the same circle with the center of the pointer gear as the center, and each detection light-through hole corresponds to a standard pointer position.

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