CN-122018279-A - Intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation

CN122018279ACN 122018279 ACN122018279 ACN 122018279ACN-122018279-A

Abstract

The invention belongs to the technical field of intelligent wearing equipment, and particularly relates to an intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation, which comprises a rotary bezel, a magnetic induction unit, a mechanical coding unit and a signal processing module, wherein the magnetic induction unit realizes continuous angle detection through a permanent magnet array and a Hall sensor, the mechanical coding unit is connected with an output direction and displacement pulse of an incremental encoder through a reduction gear set, the signal processing module carries out synchronous verification and composite event generation on bimodal signals, and the intelligent watch control assembly realizes high-reliability electrodeless rotation control and direct contact with any angle function and has the beneficial effects of interference resistance, long service life, friendly blind operation and the like.

Inventors

WANG WEICHENG
Hao chuangbo
SHU XUEWEN
YUAN WENPING
LIU XIN
LIANG HONG

Assignees

深圳卓隆智能电子有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. An intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation, which is characterized by comprising: the rotary meter ring is arranged on the outer edge of the meter body in a mode of freely rotating around the central shaft of the meter body; a case middle frame forming a case main body structure and having a function module mounting position provided in an inner circumferential direction thereof; The magnetic induction unit consists of a permanent magnet array embedded in the inner side wall of the rotary meter ring and a Hall sensor array fixedly assembled in a corresponding area on the inner side of the middle frame of the meter body, wherein the permanent magnet arrays are distributed at equal intervals along the circumferential direction, and the polarities of adjacent permanent magnets are alternately arranged to form a periodic multipolar magnetic field, so that the Hall sensor outputs an analog signal which changes periodically when the rotary meter ring rotates; The mechanical coding unit comprises a transmission gear set coaxially connected with the rotary bezel, an incremental mechanical coder meshed and linked with the transmission gear set, and an electrical interface circuit for connecting an output signal of the coder into the main control system; the signal processing module is integrated on the watch main board and has the functions of double-channel signal acquisition, threshold comparison, state synchronization and event generation; The main control system is operated in the watch application processor and is used for receiving and analyzing the composite event instruction from the signal processing module and executing corresponding user interface updating or function calling operation; The signal processing module is configured with a first channel and a second channel, wherein the first channel processes continuous magnetic field intensity data flow output by the Hall sensor, the second channel receives discrete pulse sequences output by the mechanical encoder, the signal processing module further comprises a state synchronization logic unit, the state synchronization logic unit immediately latches a current Hall sensor sampling value after receiving pulse edge signals of the mechanical encoder each time and carries out consistency check on the current Hall sensor sampling value and an angle identification code of a position confirmation event generated by crossing the magnetic field threshold value last time, if the angle deviation of the current Hall sensor sampling value and the angle identification code is within a preset tolerance range, a composite control event with a direction attribute and an absolute position label is generated, otherwise, the current Hall sensor sampling value is judged to be an invalid event and is discarded.
2. The intelligent watch control assembly according to claim 1, wherein the permanent magnet array is a plurality of discrete permanent magnets magnetized in the radial direction, the permanent magnets are arranged at equal intervals along the circumferential direction of the inner side of the rotary bezel, and the polarities of the adjacent permanent magnets are opposite to form a distribution structure of N magnetic field periods per revolution; The Hall sensor array is a single linear Hall element or a multichannel differential Hall sensor chip, the sensitive axis direction of the Hall sensor array is consistent with the radial magnetic field direction of the permanent magnet, and the output end of the Hall sensor array is connected to an analog-to-digital conversion channel of the signal processing module through a shielding wire.
3. The smart watch manipulation assembly of claim 1, wherein the drive gear set is comprised of a main drive gear and a reduction driven gear, the main drive gear is fixedly connected to a circular flange at the bottom of the rotary bezel, the reduction driven gear is rigidly connected to an input shaft of the incremental mechanical encoder, and both form an integer reduction gear ratio greater than 1, such that the mechanical encoder outputs only a number of discrete pulse pairs per complete revolution of the rotary bezel, thereby reducing encoder wear frequency and improving unit angular resolution while preserving endless rotary feel.
4. The smart watch manipulation assembly of claim 1, wherein the first channel of the signal processing module is configured with a dynamic threshold comparator, the reference voltage of which is adaptively adjusted according to the ambient temperature and the historical magnetic field reference value; When the continuous sampling value spans a preset rising edge or falling edge threshold value interval, generating a position confirmation event and recording a corresponding absolute angle identification code; The absolute angle identification code is obtained by mapping 360 DEG into M sectors, M is equal to the number of permanent magnets, and each sector corresponds to a unique identification code.
5. The smart watch manipulation assembly of claim 1, wherein the consistency check rule of the state synchronization logic is: Calculating absolute deviation delta theta between an angle theta hall corresponding to a current Hall sampling value and an accumulated angle theta enc of the mechanical encoder, and judging to be effective if delta theta is less than or equal to 6 degrees; Otherwise, the event is discarded and an abnormal recovery flow is started as invalid jitter or false triggering, including the steps of emptying a counter, re-executing zero calibration, and reporting a sensor out-of-step error after continuous multiple anomalies.
6. The intelligent watch control assembly according to claim 1, wherein a function mapping table is preset in the main control system, and a plurality of specific angle identification codes are respectively bound to shortcut function entries; when a composite event with an absolute position tag is received and the tag hits the mapping table, directly calling a corresponding functional module to realize blind operation confirmation; For a missed continuous rotation operation, the scrolling list, zoom view or adjustment slider is driven in accordance with the relative displacement provided by the mechanical encoder.
7. The intelligent watch control assembly according to claim 1, wherein an elastic damping ring is arranged in an assembly gap between the rotary bezel and the middle frame of the watch body, the elastic damping ring is made of silica gel or thermoplastic polyurethane material, surrounds the bottom of the rotary bezel for one circle and is in interference fit with the inner wall of the middle frame; the rotary meter ring is characterized in that a plurality of positioning grooves are formed in the annular flange at the bottom of the rotary meter ring, a weak clamping structure is formed by the positioning grooves and the ball spring mechanism arranged on the inner side of the middle frame of the meter body, and slight section sense is generated when the positioning grooves are close to a preset function triggering angle so as to assist a user to sense a target position.
8. The smart watch manipulation assembly of claim 1, wherein the hall sensor and the mechanical encoder share the same radial cross-sectional area in physical layout, are arranged in layers along an axial direction and are encapsulated in a metal shield through epoxy resin; the composite event data is transmitted between the signal processing module and the main control system by adopting an SPI bus communication protocol; All supply lines are processed through the LC filter network to prevent power supply noise from coupling to the analog front end.
9. The smart watch manipulation assembly of claim 1, wherein the signal processing module is provided with pressure threshold decision logic to resolve gestures in conjunction with a rotation event when the change in the Z-axis hall output value exceeds a set threshold.
10. The smart watch manipulation assembly of claim 1, wherein the signal processing module is integrated with a non-volatile memory unit for periodically recording zero offset parameters of the hall sensor and accumulated wear counts of the mechanical encoder.

Description

Intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation Technical Field The invention belongs to the technical field of intelligent wearing equipment, and particularly relates to an intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation. Background Along with the evolution of wearable intelligent equipment, the intelligent watch is updated from a simple time display tool to a multifunctional man-machine interface terminal integrating health monitoring, information interaction and mobile control, the requirements of users on control intuitiveness, response speed and operation texture are continuously improved, the traditional touch screen has obvious limitations in scenes such as sports, wet hands or wearing gloves, and the physical keys are difficult to bear complex instruction input due to space limitation, so that a rotary control structure integrating mechanical operation handfeel and intelligent function response becomes a key technical path for improving man-machine interaction experience of the intelligent watch. The current mainstream rotation control scheme in the industry mainly adopts a pure mechanical encoder, an optical encoding structure or a magnetic induction structure to realize signal acquisition, the mechanical encoder converts rotation displacement into a pulse electric signal through a gear or a conductive slip ring, the operation feedback feeling is good, but faults are easily caused by abrasion of metal contacts, the optical encoding scheme avoids physical contact, but has strict requirements on assembly precision, dust prevention and water prevention, and insufficient stability under strong light or polluted environment, the magnetic induction scheme improves durability, but the output of the magnetic induction scheme only reflects continuous change of magnetic field intensity, lacks definite position discretization criteria, is difficult to directly map function triggering logic, needs to rely on screen feedback to confirm operation, and weakens consistency and reliability of blind operation experience. The prior art has the contradiction of deep structural contradiction that pursuing high-precision position identification and deterministic function triggering, a discrete signal mechanism with a clear threshold boundary is needed, rotation smoothness is always sacrificed or mechanical abrasion is always introduced, an electrodeless non-contact continuous induction mode is adopted to ensure operation smoothness and device service life, and precise low-delay linkage of rotation action and functions is difficult to realize on the premise of not depending on complex algorithm post-processing. Therefore, the invention provides the intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation. Disclosure of Invention In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The technical scheme adopted for solving the technical problems is that the intelligent watch control assembly integrating magnetic induction and mechanical electrodeless rotation comprises: the rotary meter ring is arranged on the outer edge of the meter body in a mode of freely rotating around the central shaft of the meter body; a case middle frame forming a case main body structure and having a function module mounting position provided in an inner circumferential direction thereof; The magnetic induction unit consists of a permanent magnet array embedded in the inner side wall of the rotary meter ring and a Hall sensor array fixedly assembled in a corresponding area on the inner side of the middle frame of the meter body, wherein the permanent magnet arrays are distributed at equal intervals along the circumferential direction, and the polarities of adjacent permanent magnets are alternately arranged to form a periodic multipolar magnetic field, so that the Hall sensor outputs an analog signal which changes periodically when the rotary meter ring rotates; The mechanical coding unit comprises a transmission gear set coaxially connected with the rotary bezel, an incremental mechanical coder meshed and linked with the transmission gear set, and an electrical interface circuit for connecting an output signal of the coder into the main control system; the signal processing module is integrated on the watch main board and has the functions of double-channel signal acquisition, threshold comparison, state synchronization and event generation; The main control system is operated in the watch application processor and is used for receiving and analyzing the composite event instruction from the signal processing module and executing corresponding user interface updating or function calling operation; The signal processing module is configured with a first channel and a second channel, wherein the first channel process