CN110658714A

CN110658714A - Watch capable of automatically identifying pointer position

Info

Publication number: CN110658714A
Application number: CN201910896427.7A
Authority: CN
Inventors: 韦健崇
Original assignee: Jiangsu Lexin Intelligent Technology Co Ltd
Current assignee: Jiangsu Lexin Intelligent Technology Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-01-07

Abstract

The invention relates to a watch capable of automatically identifying the position of a pointer, which comprises: a cartridge connected to a gearbox; the control unit can control the pointer of the movement to rotate by a preset number of steps or angles; the perforated capacitive touch screen comprises a perforated capacitive touch screen and a controller, wherein the perforated capacitive touch screen is provided with a plurality of sector areas which can be swept by a pointer of the movement, the pointer of the movement penetrates through the center of the perforated capacitive touch screen, and the perforated capacitive touch screen is fixedly connected with a graduated word surface.

Description

Watch capable of automatically identifying pointer position

Technical Field

The invention relates to a watch, in particular to a watch capable of automatically identifying the position of a pointer.

Background

The physical hands of a watch may cause timing errors due to long-time travel and due to various reasons. However, since the hands and the surface are two systems which cannot feed back each other, the control unit of the watch is not aware of the relative position relationship between the metal hands and the surface of the current entity. In the process of solving the problem, the applicant proposes many solutions, such as that "CN 2017103521748" is determined by means of image recognition, "CN 2017111370487" and "CN 2017111377202" by means of adding some sensors or setting a circuit, and the like. However, the above methods require external devices or additional devices to be installed on the watch for judgment.

Disclosure of Invention

The invention aims at the technical problem and provides the watch capable of automatically identifying the position of the pointer.

The specific technical scheme of the invention is as follows:

a watch that can automatically identify the position of a hand, the watch comprising:

a cartridge connected to a gearbox;

the control unit can control the pointer of the movement to rotate by a preset number of steps or angles;

the perforated capacitive touch screen is provided with a plurality of sector-shaped areas which can be swept by the pointer of the movement, the pointer of the movement penetrates through the center of the perforated capacitive touch screen, and the perforated capacitive touch screen is fixedly connected with a graduated word surface;

the center line position of each sector of the perforated capacitive touch screen and the scale position of the watch surface form a reference position B of each sector relative to the center line position_SNWherein SN denotes an nth sector; the reference position B of each sector_SNThe scale on the surface of the watch uniquely corresponds to one scale on the surface of the watch; each sector can be detected by the control unit for real-time capacitance;

the control unit is configured to: the control unit comprises a pointer identification program, when the pointer identification program is started, the rotation of all pointers is stopped, and the use right of any pointer and the perforated capacitive screen driven by other programs is suspended; the control unit detects the capacitance of each sector after all the pointers stop, if the capacitance of the sector is 0, the sector is recorded as an effective sector, and if the capacitance of the sector is not 0, the sector is recorded as an ineffective sector;

after the control unit records the effective sector and the ineffective sector, the control unit drives the pointer at the position to be identified and keeps the rest pointers to be relatively static with the surface of the watch; in an identification period, when the p-th sector is an effective sector, recording the rotation angle B1 of the pointer of the position to be identified when the capacitance of the p-th sector changes from 0 to non-0; or, in an identification period, when the detection capacitance of the ith sector changes from 0 to non-0 in the pointer rotation process of the position to be identified, judging whether the ith sector is an invalid sector, if so, continuing to rotate the pointer of the position to be identified until the detection capacitance changes from 0 to the non-0 th sectorThe p sector is an effective sector and records the rotation angle B1 of the pointer of the position to be identified; when the ith sector is a sector with the capacitance not equal to 0, the capacitance of the sector is actually suddenly changed from 0 to non-zero when the sector is detected to have the capacitance suddenly changed from the sector. When the p-th sector is an effective sector, the detection capacitance is continuously gradually changed. When the ith sector is an invalid sector, there must be some pointer which may or may not be directly above the ith sector and may also affect the capacitance of the adjacent sectors, so we discard these sectors at the time of calculation to make the location identification relatively accurate. Recording the rotation angle B2 of the pointer of the position to be identified when the detection capacitance of the p-th sector changes from 0 to 0; determining the position of the pointer of the position to be identified as the position deviated from the position of 0 point on the surface of the watch (B)_SN- (B1 + (B2-B1)/2)) degrees.

Further, all sectors form a complete circle.

Further, the number of sectors of the perforated capacitive screen is greater than or equal to 8.

Further, the position recognition of the remaining pointers is performed in a predetermined order.

Further, when the position of a certain pointer is recognized, the pointer is driven to rotate by an angle of 360 degrees, so that the pointer returns to the original position after the recognition is completed.

Further, when any pointer is driven to rotate, the precision of rotation is 1 step and 1 degree.

Further, the above-described rotation angle B1 and rotation angle B2 are replaced with the number of steps B1 and the number of steps B2.

According to the technical scheme, the physical position of the pointer is accurately determined under the conditions that the structure of the watch is not changed and external auxiliary equipment (such as a camera) is not utilized according to the characteristics of the perforated screen, the characteristics of the metal of the pointer and the principle that the capacitance changes when the metal pointer sweeps across the perforated screen, so that preparation is made for subsequent automatic time setting.

Drawings

Fig. 1 is a schematic view of the movement of the present invention.

FIG. 2 is a sectional view of a capacitive touch screen according to the present invention.

Fig. 3 is a schematic view of the movement, screen and face assembly.

FIG. 4 is a waveform of four sector capacitance.

FIG. 5 is a graph of capacitance waveform data analysis for four sectors.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used to describe … … in embodiments of the present invention, these … … should not be limited to these terms. These terms are used only to distinguish … …. For example, the first … … can also be referred to as the second … … and similarly the second … … can also be referred to as the first … … without departing from the scope of embodiments of the present invention.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

First embodiment

As shown in fig. 1, the movement of a watch comprises hands.

As shown in fig. 2, the screen of the watch is a capacitive touch screen, the hands of the watch are located in the center of the screen, and the periphery of the touch area is in a fan shape around the center of the watch. Fig. 2 shows a preferred mode of the watch drive arrangement, in which the screen of the watch used by the applicant is provided with two annular capacitive touch areas in the central position of the hands, and outside the two annular capacitive touch areas, a plurality of sectors are provided, the two annular capacitive touch areas and the plurality of sectors together forming a circular capacitive touch screen in the form of a whole. Preferably, the applicant requires that the sector provided has 8 blocks.

It is specifically stated that the term "sector" in the present application is used throughout the present application to refer to the shape as identified by the numerals 1-8 in fig. 2, and is the remaining portion of the sector named as the geometric shape minus the sector centered on the pointer and having the largest radius of the two circular rings as the radius, which is the sector of the present application.

Meanwhile, the applicant needs to support that the circular perforated screen of the perforated watch is described in patents "CN 2017202376808" and "CN 201720237687X" of kunto yuan digital technology limited, and in the manufacturing process of the screen, the above-mentioned annular capacitive touch area and sector capacitive touch area are already determined, which are inherent properties after the screen is manufactured, and of course, the partition of the touch area can be determined as required in the manufacturing process, for example, one or 0 annular touch area and 10 sector touch areas are set, which can be determined in the screen manufacturing process, and the determination of the number is not within the protection scope of the present application.

As shown in fig. 3, the movement including the hands, the capacitive touch screen, and the watch, when mounted, exhibit the pattern shown in fig. 3. Each pointer can sweep through the 8 capacitive touch areas described above.

It can be seen that the hardware carrier as the method for determining the surface pointer of the present application includes:

the control unit can control the rotation of the pointer and can detect the real-time capacitance of each sector touch area;

the movement is connected to the gear box, is controlled by the control unit, and can rotate for a preset number of steps according to the control of the control unit;

a capacitive touch screen having a plurality of sector areas that a pointer of the movement can sweep over, each sector area being detectable by the control unit for real-time capacitance;

the capacitive touch screen is fixedly connected with a character face with watch scales.

Second embodiment

On the basis of the first embodiment, when the hands of the watch need to be adjusted to the preset scale positions, the scale positions where the hands are located at present need to be known first, but because the hands and the surface are two sets of systems which cannot feed back each other, the control unit of the watch does not know the relative position relationship between the metal hands and the surface of the current entity.

In the process of solving the problem, the applicant proposes many solutions, such as that "CN 2017103521748" is determined by means of image recognition, "CN 2017111370487" and "CN 2017111377202" by means of adding some sensors or setting a circuit, and the like. However, the above methods require external devices or additional devices to be installed on the watch for judgment.

After a depth study of the metal hands of the capacitive touch screen and of the watch, as shown in fig. 4, the control unit detects the capacitance of the four sectors numbered 2, 4, 6, 8 when one hand sweeps through 360 °. The specific values have no research significance, and the interval from the absence to the existence or from the existence to the absence of the capacitance is mainly concerned.

Referring to the first row of graph data in fig. 4, which represents the capacitance of the capacitive touch area numbered 2, it can be seen from fig. 2 and 3 that the capacitive touch area numbered 2 has a value only when the pointer is about to sweep, is sweeping, and has a time after sweeping, and the capacitance in the capacitive touch area numbered 2 is 0 in the rest of the time.

Similarly, the second, third and fourth rows of fig. 4 represent the capacitive touch areas numbered 4, 6 and 8, and the capacitive touch areas numbered 4, 6 and 8 have values only when the pointer is about to sweep, is sweeping and is sweeping for a period of time, and the capacitance in the capacitive touch area numbered 2 is 0 for the rest of the period of time.

Further, the initial position is set at 0 (or 12) and the hour hand is rotated 360 ° clockwise, so that the data of the capacitance variation of the sectors S2, S4, S6 and S8 are obtained, and the data are analyzed, and the graph of the analysis is shown in fig. 5:

the first row is the waveform display of the original data, and the graphs of the second row and the third row are obtained by taking the starting point and the end point of the capacitance value from 0 to 0 or from 0 to 0, and the following specific knowledge can be found (the length of each step of the pointer is controlled by the control unit is 1 °):

the hour hand starts to enter the capacitance sensing area S2 in step 14, and starts to leave the capacitance sensing area S2 in step 76;

the hour hand starts to enter the capacitance sensing area S4 at step 104, and starts to leave the capacitance sensing area S4 at step 166;

the hour hand starts to enter the capacitance sensing area S6 in step 194, and starts to leave the capacitance sensing area S6 in step 256;

the hour hand begins to enter capacitive sensing zone S8 at step 284 and begins to exit capacitive sensing zone S8 at step 346.

The capacitance sensed in the region of S2 exists from step 14 up to step 76, (14 + 76)/2 =45, i.e., the 45 th or 45 th position is the midpoint position of the region of S2;

by analogy, the hour hand reaches the centerline area of S4 at step 135, namely the 135-degree position;

the hour hand reaches the centerline area of S6 in step 225, namely the 225-degree position;

the hour hand reaches the centerline region of S8, i.e., the 315 deg. position, at step 315.

And taking the midpoint position of each interval to obtain the graph of the fourth line.

Although the above graphs show waveforms omitted from S1, S3, S5, and S7, the middle line regions from the capacitive value to the non-capacitive value of S1, S3, S5, and S7 were tested as their physical midpoint positions as well as the sectors S2, S4, S6, and S8.

Next, features are extracted, and the position of the pointer when the pointer is swept through 360 ° is analyzed using the above-described characteristics, so that the actual position where the pointer is located is analyzed using the above-described data.

When the position of the pointer is judged, the detected middle point is used for judging, although the watch has 8 capacitance touch areas, theoretically, the middle point swept by the pointer can be detected only by any one capacitance touch area.

For example, during the process that a certain pointer sweeps 360 degrees, the control unit calculates the step number B1 when the capacitance touch block detecting the capacitance value from 0 to any region from the pointer rotation (B1 is the step number B1 when the pointer starts to rotate after stopping all pointers to stop rotatingThe number of steps from 0 to 0 detected by the capacitive touch block moving to any one area) and calculating the number of steps from B2 (B2 is the number of steps from when the pointer stops rotating all the pointers and when the capacitive touch block detecting the capacitance value changes from 0 to 0) when the capacitive touch block detecting the capacitance value changes from the number to 0) in the area, the interval of B2-B1 is the area where the capacitive touch area can detect the capacitance value, according to the characteristics, (B2-B1)/2 is the midpoint position of the area, and since each capacitive touch area is fixed with the face of the watch, the corresponding (B2-B1)/2 is necessarily one of 0, 45, 90, 135, 180, 225, 270, 315 and is recorded as B_{In SN}Wherein N represents the number of the region, if the midpoint position of number 1 is 0 DEG, B_S1=0, if the midpoint position of number 2 is 45 °, B_S2And = 45. Thus, the physical position distance B at the time when the control unit drives the pointer to rotate can be determined at this time_SNIs B1+ (B2-B1)/2, the physical position of the pointer at the beginning of the rotation is B_SN-（B1+（B2-B1）/2）。

For example:

when the number of steps B1 of the rotation of the pointer is 10 steps, a capacitance value is detected in the capacitance touch area numbered 1;

the capacitance value of 0 is detected at 72 steps of the step number B2, at which time it is determined that the pointer must pass B_S1I.e., the 0 point position, and is passed B in a step size of (B2-B1)/2 after the dot capacitance value is detected_S1I.e., the 0 point location;

calculate B1+ (B2-B1)/2 =41, i.e. the pointer distance B_S1Is 41.

Thus, the position of the pointer is determined to be B_S1- (B1 + (B2-B1)/2) = -41 °, i.e., a position at which the pointer is rotated counterclockwise by 41 ° at point 0.

For another example:

when the number of steps B1 of the rotation of the pointer is 100 steps, a capacitance value is detected in the capacitance touch area with the number 6;

at step number B2, step 162, the capacitance value is detected to be 0, and it is determined that the pointer must pass B_S6I.e., the location of surface 225 deg., and is the step size of (B2-B1)/2 after the detection of the dot capacitance value, passes B_S6I.e. the surface 225 °;

calculate B1+ (B2-B1)/2 =131, i.e. the pointer distance B_S6Is 131.

Thus, the position of the pointer is determined to be B_S6- (B1 + (B2-B1)/2) =94, i.e., a position at which the pointer is rotated clockwise 94 at point 0.

Third embodiment

In actual operation, since the hands are required to be always in one position and can reach 3 times, when capacitance detection is carried out, the rotation of all the hands is stopped, and when the position of one hand needs to be determined, all the other hands are kept in a static state.

At this time, since the other pointer is in a static state and is inevitably in a detectable range of a certain capacitive touch area, and even possibly in a detectable range of both capacitive touch areas, this results in a state where a capacitance value is always present in a certain or some capacitive touch areas, and even if the detection pointer moves across the area, the area always has a capacitance value due to the presence of the other pointer, and therefore, the influence of the pointers needs to be eliminated.

When stopping all pointer rotation, the control unit detects the capacitance of all capacitance touch areas, and once capacitance is detected in one or some areas, the areas where capacitance can be detected at first are discarded in the subsequent calculation reference.

For example, when the control unit detects that the capacitance values exist in the regions of S1, S2, S4, S6 while stopping the rotation of all the hands, it indicates that one hand is at a position between S1 and S2, one hand is directly above the region of S4, and one hand is uppermost in the region of S6. Then in the subsequent calculation, the 4 regions of the reference B_S1、B_S2、B_S4And B_S6We do not calculate and only consider the benchmarks at the S3, S5, S7 and S8 regions.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A watch that can automatically identify the position of a hand, the watch comprising:

a cartridge connected to a gearbox;

the method is characterized in that:

the midline position of each sector of the perforated capacitive touch screen and the scale position of the watch surface form a reference position B of each sector relative to the midline position_SNWherein SN denotes an nth sector; the reference position B of each sector_SNThe scale on the surface of the watch uniquely corresponds to one scale on the surface of the watch; each sector can be controlled by the control listDetecting a real-time capacitor;

after the control unit records the effective sector and the ineffective sector, the control unit drives the pointer at the position to be identified and keeps the rest pointers to be relatively static with the surface of the watch;

in an identification period, when the p-th sector is an effective sector, recording the rotation angle B1 of the pointer of the position to be identified when the capacitance of the p-th sector changes from 0 to non-0; or, in an identification period, when the detection capacitance of the ith sector changes from 0 to non-0 in the pointer rotation process of the position to be identified, judging whether the ith sector is an invalid sector, if so, continuing to rotate the pointer of the position to be identified until the pth sector with the capacitance changing from 0 to non-0 is detected as an valid sector, and recording the rotation angle B1 of the pointer of the position to be identified;

recording the rotation angle B2 of the pointer of the position to be identified when the detection capacitance of the p-th sector changes from 0 to 0; determining the position of the pointer of the position to be identified as the position deviated from the position of 0 point on the surface of the watch (B)_SN- (B1 + (B2-B1)/2)) degrees.

2. The watch of claim 1, wherein all sectors form a complete circle.

3. The watch of claim 2, wherein the number of sectors of the perforated capacitive screen is equal to or greater than 8.

4. The watch according to claim 1, characterized in that said control unit performs the position recognition of the remaining hands according to a predetermined sequence.

5. The wristwatch of claim 1, wherein upon recognition of the position of a hand, the hand is driven to rotate 360 degrees so that the hand returns to its original position after recognition is completed.

6. The watch of claim 1, wherein the precision of the rotation when any hand is driven to rotate is 1 step to 1 degree.

7. The wristwatch of claim 1, wherein the angles of rotation B1 and B2 are replaced by steps B1 and B2.