CN114518631A - Backlash elimination method and device, electronic equipment and computer-readable storage medium - Google Patents

Backlash elimination method and device, electronic equipment and computer-readable storage medium Download PDF

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Publication number
CN114518631A
CN114518631A CN202011301264.2A CN202011301264A CN114518631A CN 114518631 A CN114518631 A CN 114518631A CN 202011301264 A CN202011301264 A CN 202011301264A CN 114518631 A CN114518631 A CN 114518631A
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China
Prior art keywords
gear
driving gear
driving
transmission
transmission gear
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Granted
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CN202011301264.2A
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Chinese (zh)
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CN114518631B (en
Inventor
张立造
王鑫
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Chengdu Jimi Technology Co Ltd
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Chengdu Jimi Technology Co Ltd
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Priority to CN202011301264.2A priority Critical patent/CN114518631B/en
Publication of CN114518631A publication Critical patent/CN114518631A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/18—Special devices for taking up backlash
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/142—Adjusting of projection optics

Abstract

The embodiment of the invention provides a backlash elimination method and device, electronic equipment and a computer-readable storage medium, and relates to the technical field of electronic equipment. The backlash elimination method is applied to an optical machine, the optical machine comprises a lens, a transmission gear and a driving gear, the lens is in transmission connection with the transmission gear, the driving gear is meshed with the transmission gear, and the backlash elimination method comprises the following steps: controlling the driving gear to rotate according to the adjusting instruction of the lens; judging whether the driving gear is meshed with the transmission gear or not; and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number corresponding to the adjusting instruction so as to adjust the focal length of the lens. In the embodiment of the invention, after the optical machine is started, whether the driving gear is meshed with the transmission gear is judged, and after the driving gear is meshed with the transmission gear, the driving gear is controlled to rotate by corresponding target steps, so that the influence of the idle steps of the driving gear on the lens focal length adjustment can be avoided, and the focal length adjustment precision is improved.

Description

Backlash elimination method and device, electronic equipment and computer-readable storage medium
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a backlash elimination method and device, electronic equipment and a computer-readable storage medium.
Background
In the device that adopts gear structure to carry out position control under the ordinary condition, a pain point problem is because there is the clearance between the gear, can lead to the motor to have certain idle step number, and the idle stroke influences the motor position control precision, leads to the precision to position control relatively poor.
Disclosure of Invention
The invention aims to provide a backlash elimination method, a backlash elimination device, electronic equipment and a computer-readable storage medium, which can improve the precision of focal length adjustment.
Embodiments of the invention may be implemented as follows:
in a first aspect, an embodiment of the present invention provides an backlash elimination method, which is applied to an optical machine, where the optical machine includes a lens, a transmission gear, and a drive gear, the lens is in transmission connection with the transmission gear, and the drive gear is engaged with the transmission gear, and the backlash elimination method includes:
controlling the driving gear to rotate according to the adjusting instruction of the lens;
judging whether the driving gear is meshed with the transmission gear or not;
and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number corresponding to an adjusting instruction so as to adjust the focal length of the lens.
In an optional embodiment of the present invention, a first positive electrode is disposed on a first driving tooth surface of the driving gear, a second positive electrode is disposed on a first transmission tooth surface of the transmission gear, and the first driving tooth surface is attached to the first transmission tooth surface when the driving gear is engaged with the transmission gear in a first direction, where the first direction is the same as a rotation direction of the adjustment instruction, and the step of determining whether the driving gear is engaged with the transmission gear includes:
judging whether the first positive electrode and the second positive electrode are conducted or not;
and if the first positive electrode is communicated with the second positive electrode, the driving gear is meshed with the transmission gear.
In an optional embodiment of the present invention, the step of controlling the driving gear to rotate according to the lens adjustment instruction includes:
and controlling the rotation of the driving gear to a minimum step length.
In an optional embodiment of the present invention, the backlash elimination method further includes:
receiving the adjusting instruction again;
judging whether the rotation directions of the two times of adjusting instructions are the same;
and if the driving gear is the same as the current adjusting instruction, executing a step of controlling the driving gear to rotate by a target step number corresponding to the current adjusting instruction so as to adjust the focal length of the lens.
In an optional embodiment of the present invention, the backlash elimination method further includes:
if the driving gear and the transmission gear are different, judging whether the driving gear and the transmission gear are meshed or not; and controlling the driving gear to rotate a target step number if the driving gear is meshed with the transmission gear so as to adjust the focal length of the lens.
In an optional embodiment of the present invention, a first counter electrode is disposed on a second driving tooth surface of the driving gear, a second counter electrode is disposed on a second transmission tooth surface of the transmission gear, when the driving gear is engaged with the transmission gear in a second direction, the second driving tooth surface is attached to the second transmission tooth surface, the second direction is the same as a rotation direction of the current adjustment instruction, and the step of determining whether the driving gear is engaged with the transmission gear includes:
judging whether the first counter electrode and the second counter electrode are conducted or not;
and if the first counter electrode is communicated with the second counter electrode, the driving gear is meshed with the transmission gear.
In a second aspect, an embodiment of the present invention provides an backlash eliminating device, which is applied to an optical machine, where the optical machine includes a lens, a transmission gear, and a driving gear, the lens is in transmission connection with the transmission gear, the driving gear is engaged with the transmission gear, and the backlash eliminating device includes:
the rotating module is used for controlling the driving gear to rotate according to the adjusting instruction of the lens;
the judging module is used for judging whether the driving gear is meshed with the transmission gear or not;
and the adjusting module is used for controlling the driving gear to rotate by a target step number corresponding to the adjusting instruction if the driving gear is meshed with the transmission gear so as to adjust the focal length of the lens.
In a third aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes a processor and a memory, where the memory stores a computer program that can be executed by the processor, and when the computer program is executed by the processor, the electronic device implements the backlash elimination method as provided in the first aspect.
In an optional embodiment of the invention, a first forward electrode is disposed on a first driving tooth surface of the driving gear, a second forward electrode is disposed on a first driving tooth surface of the transmission gear, the electronic device further includes a first conduction detection module, the first conduction detection module is connected to the processor, the first conduction detection module is electrically connected to the first forward electrode and the second forward electrode, and the first conduction detection module detects a current if the first forward electrode contacts the second forward electrode.
In an optional embodiment of the invention, a first reverse electrode is arranged on a second driving tooth surface of the driving gear, a second reverse electrode is arranged on a second driving tooth surface of the transmission gear, the electronic device further comprises a second conduction detection module, the second conduction detection module is connected with the processor, the second conduction detection module is respectively electrically connected with the first reverse electrode and the second reverse electrode, and if the first reverse electrode is in contact with the second reverse electrode, the second conduction detection module detects current.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the backlash elimination method provided in the first aspect.
The embodiment of the invention has the following beneficial effects: the backlash elimination method is applied to an optical machine, the optical machine comprises a lens, a transmission gear and a driving gear, the lens is in transmission connection with the transmission gear, the driving gear is meshed with the transmission gear, and the backlash elimination method comprises the following steps: controlling the driving gear to rotate according to the adjusting instruction of the lens; judging whether the driving gear is meshed with the transmission gear or not; and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number corresponding to the adjusting instruction so as to adjust the focal length of the lens.
In the embodiment of the invention, after the optical machine is started, whether the driving gear is meshed with the transmission gear is judged, and after the driving gear is meshed with the transmission gear, the driving gear is controlled to rotate by corresponding target steps, so that the influence of the idle steps of the driving gear on the lens focal length adjustment can be avoided, and the focal length adjustment precision is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a connection block diagram of an electronic device according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an electronic device according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a driving gear and a transmission gear of an electronic device according to a first embodiment of the present invention.
Fig. 4 is a block diagram of an electronic device according to a first embodiment of the present invention.
Fig. 5 is a flowchart of a backlash elimination method according to a second embodiment of the present invention.
Fig. 6 is a flowchart of steps S210 and S220 of a backlash elimination method according to a second embodiment of the present invention.
Fig. 7 is a flowchart of steps S230 and S240 of a backlash elimination method according to a second embodiment of the present invention.
Fig. 8 is a block diagram of a backlash elimination device according to a second embodiment of the present invention.
Icon: 100-an electronic device; 110-a processor; 120-a memory; 130-lens; 140-a drive gear; 142-a first forward electrode; 144-a first counter electrode; 150-a drive gear; 152-a second forward electrode; 154-a second counter electrode; 160-a drive member; 170-first conduction detection module; 180-a second conduction detection module; 200-null return elimination device; 210-a rotation module; 220-a judgment module; 230-a regulation module; 240-a receiving module; 250-steering module.
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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
First embodiment
Referring to fig. 1, the present embodiment provides an electronic device 100, the electronic device 100 provided in the present embodiment includes a processor 110 and a memory 120, the memory 120 stores a computer program that can be executed by the processor 110, and when the computer program is executed by the processor 110, the loop back elimination method is implemented.
In the present embodiment, the processor 110 is further configured to control the driving gear 140 to rotate according to the adjustment instruction of the lens 130; judging whether the driving gear 140 is engaged with the transmission gear 150; if the driving gear 140 is engaged with the transmission gear 150, the driving gear 140 is controlled to rotate by a target number of steps to adjust the focal length of the lens 130.
Referring to fig. 2, in the embodiment, the electronic device 100 may be a projector, and when the electronic device 100 is a projector, the projector includes an optical engine, the optical engine includes a lens 130, a driving gear 140 and a transmission gear 150, the driving gear 140 is engaged with the transmission gear 150, and the transmission gear 150 is engaged with the lens 130. When the projector needs to adjust the focal length of the optical machine during operation, the lens 130 is moved back and forth by the transmission between the driving gear 140 and the transmission gear 150, so that the lens 130 is focused.
Generally, the electronic device 100 further includes a driving member 160, and the driving member 160 is in transmission connection with the driving gear 140. In the process of adjusting the focal length of the optical engine, an adjustment command is usually sent to the driving element 160, and after receiving the adjustment command, the driving element 160 drives the driving gear 140 to rotate by a target step number corresponding to the adjustment command, so as to adjust the focal length of the lens 130. However, in the adjustment process, when the driving gear 140 is just started, a gap exists between the driving gear 140 and the transmission gear 150, and a certain idle step number exists, that is, in the gap interval, the driving gear 140 and the transmission gear 150 are not completely meshed, and the driving gear 140 cannot drive the transmission gear 150 to rotate, and cannot push the lens 130 to effectively move.
The driving member 160 is a driving motor, and the driving gear 140 is disposed on a driving shaft of the driving motor.
In the present embodiment, it is easily understood that, when the driving gear 140 is not engaged with the transmission gear 150, the idle stroke of the driving gear 140 is an idle return stroke.
In this embodiment, when the focal length of the lens 130 needs to be adjusted, the driving element 160 is controlled to start after receiving the adjustment instruction, the driving gear 140 starts to rotate, the driving gear 140 is not meshed with the transmission gear 150 when the driving gear 140 starts to rotate, after the driving gear 140 is completely meshed with the transmission gear 150, the transmission gear 150 is driven by the driving gear 140 to rotate along with the driving gear 140, and at this time, the number of rotation steps of the transmission gear 150 is the same as the number of rotation steps of the driving gear 140.
That is, determining whether the driving gear 140 is engaged with the transmission gear 150 after the driving member 160 is started is a key to avoid the impact of the idle stroke of the driving gear 140 on the displacement accuracy of the lens 130.
It is easily understood that whether the driving gear 140 is engaged with the transmission gear 150 may be determined by whether a tooth surface of the driving gear 140 is attached to a tooth surface of the transmission gear 150, or may be determined by whether the two are in contact, and when the tooth surface of the driving gear 140 is in contact with the tooth surface of the transmission gear 150, it indicates that the two are engaged.
The driving gear 140 has both forward engagement and reverse engagement during transmission with the transmission gear 150. The driving gear 140 rotates counterclockwise and clockwise, and the forward meshing may be a case where the driving gear 140 meshes with the transmission gear 150 when rotating counterclockwise, or a case where the driving gear 140 meshes with the transmission gear 150 when rotating clockwise. Reverse engagement is the opposite of forward engagement. That is, if the forward meshing is a case where the driving gear 140 meshes with the transmission gear 150 while rotating counterclockwise, the reverse meshing is a case where the driving gear 140 meshes with the transmission gear 150 while rotating clockwise. If the forward engagement is a case where the driving gear 140 is engaged with the transmission gear 150 while rotating clockwise, the reverse engagement driving gear 140 is engaged with the transmission gear 150 while rotating counterclockwise.
For convenience of description, clockwise and counterclockwise directions shall be taken to mean in a direction from the driving gear 140 toward the driving member 160.
Referring to fig. 3 and 4, in the present embodiment, a first positive electrode 142 is disposed on a first driving tooth surface of the driving gear 140, a second positive electrode 152 is disposed on a first driving tooth surface of the transmission gear 150, the electronic device 100 further includes a first conduction detection module 170, the first conduction detection module 170 is connected to the processor 110, the first conduction detection module 170 is electrically connected to the first positive electrode 142 and the second positive electrode 152, and if the first positive electrode 142 contacts the second positive electrode 152, the first conduction detection module 170 detects a current.
In the present embodiment, when the driving gear 140 is engaged in the first direction, the first driving tooth surface is in contact with the first driving tooth surface, and when the first driving tooth surface is in contact with the first driving tooth surface, the first positive electrode 142 is communicated with the second positive electrode 152, and the first conduction detecting module 170 detects the current. That is, when the first conduction detecting module 170 detects the current, it may be judged that the driving gear 140 is engaged with the transmission gear 150 in the first direction.
In this embodiment, a first counter electrode 144 is disposed on a second driving tooth surface of the driving gear 140, a second counter electrode 154 is disposed on a second driving tooth surface of the transmission gear 150, the electronic device 100 further includes a second conduction detection module 180, the second conduction detection module 180 is connected to the processor 110, the second conduction detection module 180 is electrically connected to the first counter electrode 144 and the second counter electrode 154, and if the first counter electrode 144 contacts the second counter electrode 154, the second conduction detection module 180 detects a current.
In the present embodiment, when the driving gear 140 is engaged in the second direction, the second driving tooth surface is in contact with the second driving tooth surface, and when the second driving tooth surface is in contact with the second driving tooth surface, the first counter electrode 144 is communicated with the second counter electrode 154, and the second conduction detecting module 180 detects the current. That is, when the second conduction detecting module 180 detects the current, it may be judged that the driving gear 140 is engaged with the transmission gear 150 in the second direction.
Wherein the first direction is one of a forward engagement or a reverse engagement, the second direction is also one of a forward engagement or a reverse engagement, and the first direction is opposite to the second direction. That is, when the first direction is the forward engagement, the second direction is the reverse engagement, and when the first direction is the reverse engagement, the second direction is the forward engagement, and they are always kept opposite.
After receiving the adjustment instruction, if the rotation direction of the adjustment instruction is the same as the first direction, it indicates that the driving gear 140 is engaged with the transmission gear 150 when the first conduction detecting module 170 detects the current, and indicates that the driving gear 140 is engaged with the transmission gear 150 when the rotation direction of the adjustment instruction is the same as the second direction, and it indicates that the second conduction detecting module 180 detects the current.
It should be noted that, in the present embodiment, the first conduction detection module 170 is adopted to detect whether the first forward electrode 142 and the second forward electrode 152 are conducted, and the second conduction detection module 180 is adopted to detect whether the first reverse electrode 144 and the second reverse electrode 154 are conducted, but the present invention is not limited thereto, and in other embodiments, one conduction detection module may be adopted to simultaneously detect whether the first forward electrode 142 and the second forward electrode 152, and the first reverse electrode 144 and the second reverse electrode 154 are conducted.
It is easily understood that the driving gear 140 has a plurality of driving teeth, each driving tooth has a first forward electrode 142 and a first reverse electrode 144 oppositely disposed, the first forward electrodes 142 of the plurality of driving teeth are disposed in the same direction, and the first reverse electrodes are disposed in the same direction. Between two adjacent drive teeth, the first forward electrode 142 of one drive tooth is disposed adjacent to the first counter electrode 144 of the other drive tooth.
Similarly, the transmission gear 150 has a plurality of transmission teeth, each transmission tooth has a second positive electrode 152 and a second negative electrode 154 oppositely disposed, the plurality of second positive electrodes 152 are disposed in the same direction, and the plurality of second negative electrodes 154 are disposed in the same direction. Between two adjacent drive teeth, the second forward electrode 152 of one drive tooth is disposed adjacent to the second counter electrode 154 of the other drive tooth.
The working principle of the electronic device 100 provided by the embodiment is as follows: in this embodiment, after receiving the adjustment instruction, it is determined whether the driving gear 140 is engaged with the transmission gear 150, and when the engagement is the starting point of the focal length adjustment, the driving gear 140 is controlled to rotate by the target number of steps to adjust the focal length of the lens 130.
Second embodiment
Referring to fig. 5, the present embodiment provides a backlash elimination method, and the backlash elimination method provided in the present embodiment is mainly applied to the electronic device 100 provided in the first embodiment, and is particularly applied to an optical machine. The backlash elimination method provided by the embodiment can eliminate the idle walking steps of the driving gear 140 and improve the adjustment precision of the focal length.
For the sake of brief description, where this embodiment is not mentioned, reference may be made to the first embodiment.
The method for eliminating backlash provided by the embodiment comprises the following specific steps:
in step S100, the driving gear 140 is controlled to rotate according to the adjustment instruction of the lens 130.
In this embodiment, the adjustment instruction refers to a name for adjusting the focal length of the lens 130, and after receiving the adjustment instruction, it is described that the lens 130 needs to be driven to move so as to adjust the focal length of the lens 130, that is, after receiving the adjustment instruction, the driving member 160 is started, and the driving gear 140 is driven to rotate by the driving member 160.
In the present embodiment, in order to accurately judge whether the transmission gear 150 starts to rotate when the driving gear 140 rotates, the driving gear 140 is controlled to rotate in a minimum step. The minimum step size represents the angle by which the drive gear 140 rotates by one gear tooth, and it is understood that the drive gear 140 and the transfer gear 150 rotate by the angle by which the drive gear 140 rotates from the opposing intermeshing gear teeth to the next set of intermeshing gear teeth. Which may also be understood as the corresponding angle of rotation of one gear tooth of the drive gear 140.
In step S200, it is determined whether the driving gear 140 is engaged with the transmission gear 150.
In this embodiment, when the driving gear 140 is just started, a gap exists between the driving gear 140 and the transmission gear 150, that is, the driving gear 140 cannot drive the transmission gear 150 to rotate, and the driving gear 140 has a certain idle stroke, and after the driving gear 140 rotates by a minimum step length, it is determined whether the driving gear 140 is currently meshed with the transmission gear 150, so that the influence of the idle stroke of the driving gear 140 on the displacement accuracy of the lens 130 can be reduced as much as possible.
Referring to fig. 6, step S200 includes step S210 and step S220.
In step S210, it is determined whether the first forward electrode 142 and the second forward electrode 152 are conductive.
In the embodiment, since the first positive direction is disposed on the first driving tooth surface of the driving gear 140, and the second positive electrode 152 is disposed on the first driving tooth surface of the transmission gear 150, when the first driving tooth surface contacts with the first driving tooth surface, it is described that the driving gear 140 and the transmission gear 150 are engaged in the first direction, and when the first driving tooth surface contacts with the first driving tooth surface, the first positive electrode 142 and the second positive electrode 152 are attached to each other, and they are conducted. That is, when the first positive electrode 142 is conducted to the second positive electrode 152, it is explained that the driving gear 140 is engaged with the transmission gear 150 in the first direction.
The conduction between the first forward electrode 142 and the second forward electrode 152 may be determined in various ways, and a current change in a loop formed by the first forward electrode 142 and the second forward electrode 152 may be detected, or a voltage change in the loop may be detected.
In step S220, if the first positive electrode 142 and the second positive electrode 152 are conducted, the driving gear 140 is engaged with the transmission gear 150.
When the first positive electrode 142 and the second positive electrode 152 are conducted, the first driving tooth surface and the first transmission tooth surface are already jointed, and the jointing of the first driving tooth surface and the first transmission tooth surface indicates that the driving gear 140 is meshed with the transmission gear 150 in the first direction.
Referring to fig. 5, in step S300, if the driving gear 140 is engaged with the transmission gear 150, the driving gear 140 is controlled to rotate by a target step number corresponding to the adjustment instruction, so as to adjust the focal length of the lens 130.
In the present embodiment, when the driving gear 140 is meshed with the transmission gear 150, it indicates that the idle stroke of the driving gear 140 has ended, and at this time, the driving gear 140 is meshed with the transmission gear 150, and the transmission gear 150 can move under the driving of the driving gear 140, so as to adjust the focal length of the lens 130.
In step S400, if the driving gear 140 is not engaged with the transmission gear 150, a step of controlling the driving gear 140 to rotate by a minimum step is performed.
If the driving gear 140 is not engaged with the transmission gear 150, the rotation of the driving gear 140 is controlled by a minimum step size, and the step S200 is continuously performed. And repeating the process, judging whether the driving gear 140 is meshed with the transmission gear 150 after judging that the driving gear rotates for one minimum step length again, and till the driving gear 140 is meshed with the transmission gear 150.
Step S500, the adjustment instruction is received again.
In this embodiment, during the use of the optical engine, the lens 130 may be focused multiple times. The next focusing will occur after the previous focusing is completed. The target number of steps for each focus adjustment may be the same or different.
And step S600, judging whether the rotation directions of the two adjusting instructions are the same.
In the present embodiment, there are two cases of forward meshing and reverse meshing in the process of intermeshing transmission between the driving gear 140 and the transmission gear 150, and the driving gear 140 may idle when the driving gear 140 and the transmission gear 150 are in primary forward meshing or primary reverse meshing. That is, the driving gear 140 may be idled when the first driving gear 140 is engaged with the transmission gear 150 in the forward direction, and the driving gear 140 may not be idled when the forward engagement is transmitted again. Similarly, when the first drive gear 140 is in reverse engagement with the transmission gear 150, the drive gear 140 will idle, and when the second drive gear is in reverse engagement, the drive gear 140 will not idle. Whether the rotation directions of the two adjustment commands are the same or not can be judged to judge whether the driving gear 140 and the transmission gear 150 need to be re-meshed or not.
When the rotation directions of the two adjustment instructions are the same, after the adjustment instruction is received again, the driving gear 140 and the transmission gear 150 directly rotate in the same direction without being re-meshed. When the rotation directions of the two adjustment commands are different, the driving gear 140 and the transmission gear 150 need to be re-meshed, and the driving gear 140 also idles in the re-meshing process.
If the rotation direction is the same, the driving gear 140 is controlled to rotate by the target step number corresponding to the current adjustment command.
In this embodiment, when the rotation directions of the two adjustment commands are the same, it is described that the driving gear 140 and the transmission gear 150 have been completely meshed in the previous focal length adjustment process, and when the two adjustment commands are rotated in the same direction again, the driving gear 140 can drive the transmission gear 150 to transmit without re-meshing. At this time, the transmission gear 150 rotates along with the driving gear 140, and the target step number corresponding to the current adjustment instruction is obtained.
If not, executing judgment to judge whether the driving gear 140 is meshed with the transmission gear 150; and a step of controlling the driving gear 140 to rotate a target number of steps to adjust the focal length of the lens 130 if the driving gear 140 is engaged with the transmission gear 150.
In the present embodiment, when the rotation directions of the two times are different and the latter rotation is performed, the driving gear 140 and the transmission gear 150 need to be re-engaged with each other, and the steps S100 to S400 need to be repeatedly performed.
When step S100 is performed again, the meshing surface between the driving gear 140 and the transmission gear 150 is changed, and whether the second driving tooth surface and the second transmission tooth surface are in contact or not is determined again. The method comprises the following specific steps:
referring to fig. 7, step S200 may further include step S230 and step S240.
In step S230, it is determined whether the first counter electrode 144 and the second counter electrode 154 are conductive.
In the present embodiment, since the first reverse direction is disposed on the second driving tooth surface of the driving gear 140, and the second reverse electrode is disposed on the second transmission tooth surface of the transmission gear 150, when the second driving tooth surface contacts with the second transmission tooth surface, it is described that the driving gear 140 and the transmission gear 150 are engaged in the second direction, and when the second driving tooth surface contacts with the second transmission tooth surface, the first reverse electrode 144 and the second reverse electrode 154 are attached to each other, and they are conducted. That is, when the first counter electrode 144 is conducted to the second counter electrode 154, it is explained that the driving gear 140 is engaged with the transmission gear 150 in the first direction.
The conduction between the first counter electrode 144 and the second counter electrode 154 can be determined in various ways, and a current change in a loop formed by the first counter electrode 144 and the second counter electrode 154 can be detected, or a voltage change in the loop can be detected.
In step S240, if the first counter electrode 144 and the second counter electrode 154 are conducted, the driving gear 140 is engaged with the transmission gear 150.
In the present embodiment, the second driving flank and the second transmission flank are already engaged when the first counter electrode 144 and the second counter electrode 154 are conducted, and the engagement between the driving gear 140 and the transmission gear 150 is the second direction.
Similarly, when the first counter electrode 144 is not in electrical communication with the second counter electrode 154, the driving gear 140 is continuously controlled to rotate a minimum step size, and the steps are repeated.
Referring to fig. 8, an embodiment of the present invention further provides an backlash elimination apparatus 200, where the backlash elimination apparatus 200 includes:
a rotation module 210 for controlling the rotation of the driving gear 140 according to the adjustment instruction of the lens 130;
step S100 of the backlash elimination method provided in the embodiment of the present invention may be executed by the rotating module 210.
The judging module 220 is used for judging whether the driving gear 140 is meshed with the transmission gear 150 or not;
the step S200 and the sub-steps of the backlash elimination method provided in the embodiment of the present invention can be executed by the determining module 220.
And an adjusting module 230 for controlling the driving gear 140 to rotate a target number of steps if the driving gear 140 is engaged with the transmission gear 150, so as to adjust the focal length of the lens 130.
Steps S300 and S400 of the backlash elimination method according to the embodiment of the present invention can be executed by the adjusting module 230.
And a receiving module 240, configured to receive the adjustment instruction again.
Step S500 of the backlash elimination method provided in the embodiment of the present invention may be executed by the receiving module 240.
And a turning module 250, configured to determine whether the rotation directions of the two adjustment commands are the same.
Step S600 of the backlash elimination method provided in the embodiment of the present invention may be executed by the steering module 250.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present disclosure may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present disclosure. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory 120 (ROM), a Random Access Memory 120 (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (11)

1. The utility model provides a backlash elimination method, is applied to the ray apparatus, the ray apparatus includes camera lens, drive gear, the camera lens with drive gear transmission is connected, drive gear with drive gear meshing, its characterized in that, backlash elimination method includes:
controlling the driving gear to rotate according to the adjusting instruction of the lens;
judging whether the driving gear is meshed with the transmission gear or not;
and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number corresponding to an adjusting instruction so as to adjust the focal length of the lens.
2. The backlash elimination method according to claim 1, wherein a first forward electrode is provided on a first driving flank of the driving gear, a second forward electrode is provided on a first driving flank of the transmission gear, and the first driving flank is in contact with the first transmission flank in a case where the driving gear is engaged with the transmission gear in a first direction, wherein the first direction is the same as a rotation direction of the adjustment command, and the step of determining whether the driving gear is engaged with the transmission gear includes:
judging whether the first positive electrode and the second positive electrode are conducted or not;
if the first positive electrode is communicated with the second positive electrode, the driving gear is meshed with the transmission gear.
3. The backlash elimination method according to claim 1, wherein the step of controlling the rotation of the drive gear in accordance with the adjustment command of the lens includes:
and controlling the rotation of the driving gear to a minimum step length.
4. The backlash elimination method according to claim 1, further comprising:
receiving the adjusting instruction again;
judging whether the rotation directions of the two times of adjusting instructions are the same;
and if the target step number is the same as the target step number, controlling the driving gear to rotate by the target step number corresponding to the current adjusting instruction so as to adjust the focal length of the lens.
5. The backlash elimination method according to claim 4, further comprising:
if the driving gear and the transmission gear are different, judging whether the driving gear and the transmission gear are meshed or not; and controlling the driving gear to rotate a target step number if the driving gear is meshed with the transmission gear so as to adjust the focal length of the lens.
6. The backlash elimination method according to claim 5, wherein a first counter electrode is provided on a second driving flank of the driving gear, a second counter electrode is provided on a second transmission flank of the transmission gear, and the second driving flank is in contact with the second transmission flank in a case where the driving gear is engaged with the transmission gear in a second direction, which is the same as a rotation direction of the current adjustment command, and the step of determining whether the driving gear is engaged with the transmission gear includes:
judging whether the first counter electrode and the second counter electrode are conducted or not;
and if the first counter electrode is communicated with the second counter electrode, the driving gear is meshed with the transmission gear.
7. The utility model provides a backlash remove device which characterized in that is applied to the ray apparatus, the ray apparatus includes camera lens, drive gear, the camera lens with drive gear transmission is connected, drive gear with drive gear meshes, its characterized in that, backlash remove device includes:
the rotating module is used for controlling the driving gear to rotate according to the adjusting instruction of the lens;
the judging module is used for judging whether the driving gear is meshed with the transmission gear or not;
and the adjusting module is used for controlling the driving gear to rotate by a target step number corresponding to the adjusting instruction if the driving gear is meshed with the transmission gear so as to adjust the focal length of the lens.
8. An electronic device, comprising a processor and a memory, the memory storing a computer program executable by the processor, the computer program, when executed by the processor, implementing the backlash elimination method according to any of claims 1 to 6.
9. The electronic device according to claim 8, wherein a first positive electrode is disposed on a first driving tooth surface of the driving gear, a second positive electrode is disposed on a first driving tooth surface of the transmission gear, the electronic device further comprises a first conduction detection module, the first conduction detection module is connected to the processor, the first conduction detection module is electrically connected to the first positive electrode and the second positive electrode, respectively, and the conduction detection module detects the current if the first positive electrode is in contact with the second positive electrode.
10. The electronic device according to claim 8, wherein a first counter electrode is disposed on a second driving tooth surface of the driving gear, and a second counter electrode is disposed on a second driving tooth surface of the transmission gear, the electronic device further comprising a second conduction detection module, the second conduction detection module is connected to the processor, the second conduction detection module is electrically connected to the first counter electrode and the second counter electrode, respectively, and the second conduction detection module detects current if the first counter electrode contacts the second counter electrode.
11. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the backlash elimination method according to any one of claims 1 to 6.
CN202011301264.2A 2020-11-19 2020-11-19 Null back elimination method, device, electronic equipment and computer readable storage medium Active CN114518631B (en)

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