CN114518631B - Null back elimination method, device, electronic equipment and computer readable storage medium - Google Patents
Null back elimination method, device, electronic equipment and computer readable storage medium Download PDFInfo
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- CN114518631B CN114518631B CN202011301264.2A CN202011301264A CN114518631B CN 114518631 B CN114518631 B CN 114518631B CN 202011301264 A CN202011301264 A CN 202011301264A CN 114518631 B CN114518631 B CN 114518631B
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- driving gear
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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
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- 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
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- 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
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- 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
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- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Lens Barrels (AREA)
Abstract
The embodiment of the invention provides a method and a device for eliminating null backs, electronic equipment and a computer readable storage medium, and relates to the technical field of electronic equipment. The method for eliminating the backlash 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 method for eliminating the backlash comprises the following steps: controlling the rotation of the driving gear according to the adjusting instruction of the lens; judging whether the driving gear is meshed with the transmission gear; 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 a corresponding target step number, so that the influence of the idle step number of the driving gear on the focal length adjustment of the lens can be avoided, and the focal length adjustment precision is improved.
Description
Technical Field
The present invention relates to the technical field of electronic devices, and in particular, to a method and apparatus for eliminating null back, an electronic device, and a computer readable storage medium.
Background
In the device for performing position control by adopting a gear structure under normal conditions, one pain point problem is that a certain number of idle steps, namely idle strokes, exist in a motor due to gaps among gears, so that the position control precision of the motor is affected, and the position adjustment precision is poor.
Disclosure of Invention
The invention aims to provide a backlash eliminating method, a backlash eliminating 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 a method for eliminating backlash, which is applied to an optical engine, where the optical engine includes 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 method for eliminating backlash includes:
controlling the rotation of the driving gear 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 an alternative 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 the first driving tooth surface of the driving gear, and when the driving gear is meshed with the driving gear in a first direction, the first driving tooth surface is attached to the first driving tooth surface, 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 meshed with the driving gear includes:
judging whether the first positive electrode and the second positive electrode are conducted or not;
and if the first positive electrode and the second positive electrode are communicated, the driving gear is meshed with the transmission gear.
In an alternative embodiment of the present invention, the step of controlling the rotation of the driving gear according to the adjustment command of the lens includes:
and controlling the driving gear to rotate by a minimum step length.
In an optional embodiment of the invention, the null back cancellation method further includes:
receiving the adjusting instruction again;
judging whether the rotation directions of the two regulating instructions are the same or not;
and if the driving gear is the same, executing the step of controlling the driving gear to rotate 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 invention, the null back cancellation method further includes:
if the driving gears are different, judging whether the driving gears are meshed with the transmission gears or not; and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number so as to adjust the focal length of the lens.
In an alternative 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 driving tooth surface of the driving gear, and when the driving gear is meshed with the driving gear in a second direction, the second driving tooth surface is attached to the second driving tooth surface, the second direction is the same as a current rotation direction of the adjustment command, and the step of determining whether the driving gear is meshed with the driving 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 a backlash eliminating device applied to an optical engine, where the optical engine includes 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 eliminating device includes:
the rotation module is used for controlling the rotation of the driving gear 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, including a processor and a memory, where the memory stores a computer program executable by the processor, the computer program implementing the method for loop cancellation as provided in the first aspect when executed by the processor.
In an alternative embodiment of the 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 driving tooth surface of the driving gear, the electronic device further includes a first conduction detection module, the first conduction detection module is connected with the processor, the first conduction detection module is electrically connected with the first positive electrode and the second positive electrode respectively, and if the first positive electrode contacts with the second positive electrode, the first conduction detection module detects current.
In an alternative embodiment of the 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 driving tooth surface of the driving gear, the electronic device further includes 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, and if the first counter electrode contacts with the second counter electrode, the second conduction detection module detects a current.
In a fourth aspect, an embodiment of the present invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for nulling cancellation provided in the first aspect.
The embodiment of the invention has the beneficial effects that: the method for eliminating the backlash 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 method for eliminating the backlash comprises the following steps: controlling the rotation of the driving gear according to the adjusting instruction of the lens; judging whether the driving gear is meshed with the transmission gear; 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 a corresponding target step number, so that the influence of the idle step number of the driving gear on the focal length adjustment of the lens 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 that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
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 null back cancellation method according to a second embodiment of the present invention.
Fig. 6 is a flowchart of step S210 and step S220 of the null back cancellation method according to the second embodiment of the present invention.
Fig. 7 is a flowchart of step S230 and step S240 of the null back cancellation method according to the second embodiment of the present invention.
Fig. 8 is a block diagram showing the constitution of a null-back cancellation device according to a second embodiment of the present invention.
Icon: 100-an electronic device; 110-a processor; 120-memory; 130-lens; 140-a drive gear; 142-a first forward electrode; 144-a first counter electrode; 150-a transmission gear; 152-a second positive electrode; 154-a second counter electrode; 160-a driver; 170-a first turn-on detection module; 180-a second conduction detection module; 200-a null back elimination device; 210-rotating the module; 220-a judging module; 230-an adjustment module; 240-a receiving module; 250-steering module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a 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, where the electronic device 100 provided in the present embodiment includes a processor 110 and a memory 120, and the memory 120 stores a computer program capable of being executed by the processor 110, and when the computer program is executed by the processor 110, the method for eliminating backlash is implemented.
In the present embodiment, the processor 110 is further configured to control the driving gear 140 to rotate according to the adjustment command of the lens 130; judging whether the driving gear 140 is meshed 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 step number so as to adjust the focal length of the lens 130.
Referring to fig. 2, in the present embodiment, the electronic device 100 may be a projector, and when the electronic device 100 is a projector, the projector includes a light machine, the light machine includes a lens 130, a driving gear 140 and a transmission gear 150, the driving gear 140 is meshed with the transmission gear 150, and the transmission gear 150 is meshed with the lens 130. When the projector needs to adjust the focal length of the optical engine 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.
Typically, the electronic device 100 further includes a driving member 160, where the driving member 160 is in driving connection with the driving gear 140. In the process of adjusting the focal length of the optical engine, an adjustment command is generally sent to the driving member 160, and the driving member 160 drives the driving gear 140 to rotate by a target step number corresponding to the adjustment command after receiving 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, there is a gap between the driving gear 140 and the transmission gear 150, and a certain number of idle steps will exist, that is, when the driving gear 140 and the transmission gear 150 are not fully meshed in the gap interval, the driving gear 140 cannot drive the transmission gear 150 to rotate, and the lens 130 cannot be pushed to move effectively.
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 the idle stroke of the driving gear 140 is the idle stroke when the driving gear 140 and the transmission gear 150 cannot be engaged.
In this embodiment, when the focal length of the lens 130 needs to be adjusted, the driving member 160 is controlled to start after receiving the adjustment command, the driving gear 140 starts to rotate, and when the driving gear 140 starts to rotate, the driving gear 140 is not meshed with the driving gear 150, and when the driving gear 140 is fully meshed with the driving gear 150, the driving gear 150 will rotate along with the driving gear 140 under the driving of the driving gear 140, and at this time, the number of rotation steps of the driving 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 influence of the backlash of the driving gear 140 on the positioning accuracy of the lens 130.
It is easy to understand that whether the driving gear 140 is meshed with the transmission gear 150 may be understood by judging whether the tooth surface of the driving gear 140 is in contact with the tooth surface of the transmission gear 150, or whether the tooth surface of the driving gear 140 is in contact with the tooth surface of the transmission gear 150, which means that the tooth surfaces are meshed.
The driving gear 140 is engaged in both forward and reverse directions during transmission with the transmission gear 150. The driving gear 140 may be rotated counterclockwise and clockwise when rotated, and the forward engagement may be a case where the driving gear 140 is engaged with the transmission gear 150 when rotated counterclockwise, or a case where the driving gear 140 is engaged with the transmission gear 150 when rotated clockwise. Reverse engagement is the opposite of forward engagement. That is, if the forward engagement is a case where the driving gear 140 is engaged with the transmission gear 150 while rotating counterclockwise, the reverse engagement is a case where the driving gear 140 is engaged 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 are in reference to 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 driving 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 meshes in the first direction, the first driving tooth surface contacts the first driving tooth surface, and when the first driving tooth surface contacts the first driving tooth surface, the first forward electrode 142 communicates with the second forward electrode 152, and the first conduction detection module 170 detects a current. That is, when the first conduction detection module 170 detects a current, it may be determined that the driving gear 140 is engaged with the transmission gear 150 in the first direction.
In this embodiment, the first counter electrode 144 is disposed on the second driving tooth surface of the driving gear 140, the second counter electrode 154 is disposed on the second driving tooth surface of the driving 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 respectively, and if the first counter electrode 144 contacts with the second counter electrode 154, the second conduction detection module 180 detects a current.
In the present embodiment, when the driving gear 140 meshes in the second direction, the second driving tooth surface contacts the second driving tooth surface, and when the second driving tooth surface contacts the second driving tooth surface, the first counter electrode 144 communicates with the second counter electrode 154, and the second conduction detection module 180 detects the current. That is, when the second conduction detection module 180 detects the current, it may be determined that the driving gear 140 is engaged with the transmission gear 150 in the second direction.
The first direction is one of forward engagement or reverse engagement, the second direction is one of forward engagement or 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 the two directions are always opposite.
When the adjustment command is received, if the rotation direction of the adjustment command is the same as the first direction, the first conduction detection module 170 indicates that the driving gear 140 is engaged with the transmission gear 150 when detecting the current, and if the rotation direction of the adjustment command is the same as the second direction, the second conduction detection module 180 indicates that the driving gear 140 is engaged with the transmission gear 150 when detecting the current.
In the present embodiment, the first conduction detection module 170 is used to detect whether the first forward electrode 142 and the second forward electrode 152 are conducting, and the second conduction detection module 180 is used to detect whether the first reverse electrode 144 and the second reverse electrode 154 are conducting, but the present invention is not limited thereto, and in other embodiments of the present invention, one conduction detection module may be used to detect whether the first forward electrode 142 and the second forward electrode 152, the first reverse electrode 144 and the second reverse electrode 154 are conducting at the same time.
It is readily understood that the drive gear 140 has a plurality of drive teeth, each having oppositely disposed first forward electrodes 142 and first reverse electrodes 144 thereon, the first forward electrodes 142 of the plurality of drive teeth being disposed in a common direction and the first reverse motors being disposed in a common direction. Between two adjacent drive teeth, a first forward electrode 142 of one drive tooth is disposed adjacent a first reverse electrode 144 of the other drive tooth.
Similarly, the driving gear 150 has a plurality of driving teeth, each driving tooth has a second forward electrode 152 and a second reverse electrode 154 disposed opposite to each other, the plurality of second forward electrodes 152 are disposed in the same direction, and the plurality of second reverse 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 the second reverse electrode 154 of the other drive tooth.
The working principle of the electronic device 100 provided in this embodiment is as follows: in this embodiment, after receiving the adjustment command, it is first determined whether the driving gear 140 is engaged with the transmission gear 150, and when the two gears are engaged, the start point of focal length adjustment is the start point, and the driving gear 140 is controlled to rotate by a target step number to adjust the focal length of the lens 130.
Second embodiment
Referring to fig. 5, the present embodiment provides a method for eliminating backlash, and the method for eliminating backlash 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 eliminating method provided by the embodiment can eliminate the number of the idle steps of the driving gear 140 and improve the focal length adjusting precision.
For the sake of brief description, the first embodiment may be referred to where this embodiment is not mentioned.
The specific steps of the loop cancellation method provided in this embodiment are as follows:
in step S100, the driving gear 140 is controlled to rotate according to the adjustment command of the lens 130.
In this embodiment, the adjustment command refers to an adjustment name of the focal length of the lens 130, and when the adjustment command is received, it is described that the lens 130 needs to be driven to move to adjust the focal length of the lens 130, that is, the driving member 160 is started after the adjustment command is received, and the driving gear 140 is driven to rotate by the driving member 160.
In the present embodiment, in order to accurately determine 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 size. The minimum step size indicates the rotation of the drive gear 140 by an angle corresponding to one tooth, and it is understood that the drive gear 140 and the transfer gear 150 rotate from the opposite intermeshing tooth to the corresponding rotation angle of the drive gear 140 when the next set of intermeshing teeth. And may also be understood as the corresponding angle of rotation of one 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, there is a gap 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 there is a certain backlash of the driving gear 140, and when the driving gear 140 rotates by a minimum step, it is determined whether the current driving gear 140 is meshed with the transmission gear 150, so that the influence of the backlash of the driving gear 140 on the positioning 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 positive electrode 142 and the second positive electrode 152 are turned on.
In the present embodiment, since the first positive electrode 152 is disposed on the first driving tooth surface of the driving gear 140, the second positive electrode 152 is disposed on the first driving tooth surface of the driving gear 150, and the first driving tooth surface contacts the first driving tooth surface, which indicates that the driving gear 140 and the driving gear 150 are engaged in the first direction, and the first positive electrode 142 contacts the second positive electrode 152, which are in conduction, when the first driving tooth surface contacts the first driving tooth surface. That is, the driving gear 140 and the transmitting gear 150 are illustrated as being meshed in the first direction when the first and second positive electrodes 142 and 152 are conductive.
The first positive electrode 142 and the second positive electrode 152 may be determined to be in conduction in various ways, and a current change in a loop formed by the first positive electrode 142 and the second positive 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 turned on, the driving gear 140 is meshed with the transmission gear 150.
The first drive tooth surface and the first drive tooth surface have been engaged when the first positive electrode 142 and the second positive electrode 152 are in conduction, and the engagement of the two indicates that the drive gear 140 is engaged with the drive 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 command, so as to adjust the focal length of the lens 130.
In this embodiment, when the driving gear 140 is meshed with the transmission gear 150, it is indicated that the idle stroke of the current driving gear 140 has ended, 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 driving gear 140 is controlled to rotate by a minimum step, and the step S200 is continued. The above process is repeated, and it is determined whether the driving gear 140 is engaged with the transmission gear 150 after determining that the driving gear 140 is rotated again by a minimum step length until the driving gear 140 is engaged with the transmission gear 150.
Step S500, receiving the adjustment instruction again.
In this embodiment, during the use of the optical engine, the lens 130 may focus multiple times. The next focusing will occur after the last focusing is completed. The target steps for each focus adjustment may be the same or different.
In step S600, it is determined whether the rotation directions of the two adjustment commands are the same.
In the present embodiment, there are two cases of forward engagement and reverse engagement during the process of the intermeshing transmission of the drive gear 140 and the transmission gear 150, and the idle rotation of the drive gear 140 occurs when the drive gear 140 and the transmission gear 150 are engaged in the first forward direction or in the first reverse direction. That is, when the first drive gear 140 and the transmission gear 150 are engaged in the forward direction, the drive gear 140 is free from idle rotation, and when the transmission gear is engaged in the forward direction again, the drive gear 140 is not free from idle rotation. Similarly, when the first driving gear 140 and the transmission gear 150 are in reverse engagement, the same driving gear 140 will idle, and when the transmission gear is in reverse engagement again, the driving gear 140 will not idle. Determining whether the rotational directions of the two adjustment commands are the same may determine whether the drive gear 140 and the transfer gear 150 need to be re-engaged.
When the rotation directions of the two adjustment commands are the same, the driving gear 140 and the transmission gear 150 do not need to be meshed again after receiving the adjustment commands again, and the two adjustment commands can directly rotate in the same direction. When the rotational directions of the two adjustment commands are different, it is indicated that the driving gear 140 and the transmitting gear 150 need to be re-engaged, and there is also a case of idle rotation of the driving gear 140 during the re-engagement.
If the rotation directions are the same, the drive gear 140 is controlled to rotate a target step number corresponding to the current adjustment instruction.
In this embodiment, when the rotation directions of the two adjustment commands are the same, it is indicated that the driving gear 140 and the driving gear 150 are already completely engaged in the previous focal length adjustment process, and no re-engagement is needed when the two adjustment commands are rotated in the same direction again, so that the driving gear 140 can drive the driving gear 150 to drive. At this time, the transmission gear 150 may rotate along with the driving gear 140 to correspond to the target step number corresponding to the current adjustment command.
If the two gears are different, judging whether the driving gear 140 and the transmission gear 150 are meshed or not is performed; and controlling the driving gear 140 to rotate by a target step number if the driving gear 140 is engaged with the transmission gear 150, so as to adjust the focal length of the lens 130.
In the present embodiment, when the two rotation directions are different, the driving gear 140 and the transmission gear 150 need to be re-meshed when the latter rotation is performed, and steps S100 to S400 need to be repeated.
When step S100 is performed again, the engagement surface between the driving gear 140 and the driving gear 150 changes, and it is determined whether the second driving tooth surface and the second driving tooth surface are in contact. 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 turned on.
In the present embodiment, since the first reverse direction is disposed on the second driving tooth surface of the driving gear 140, the second reverse electrode is disposed on the second driving tooth surface of the driving gear 150, which means that the driving gear 140 and the driving gear 150 are engaged in the second direction when the second driving tooth surface contacts the second driving tooth surface, and the first reverse electrode 144 is attached to the second reverse electrode 154 when the second driving tooth surface contacts the second driving tooth surface, and both are conductive. That is, the driving gear 140 and the transmitting gear 150 are illustrated as being engaged in the first direction when the first counter electrode 144 and the second counter electrode 154 are conductive.
The first counter electrode 144 and the second counter electrode 154 may be determined to be in conduction in various ways, and a current change in a loop formed by the first counter electrode 144 and the second counter electrode 154 may be detected, or a voltage change in the loop may be detected.
In step S240, if the first counter electrode 144 and the second counter electrode 154 are conducted, the driving gear 140 is meshed with the transmission gear 150.
In this embodiment, the second drive tooth surface and the second drive tooth surface have been engaged when the first counter electrode 144 and the second counter electrode 154 are in conduction, and the engagement of the two indicates that the drive gear 140 is engaged with the drive gear 150 in the second direction.
Similarly, when the first counter electrode 144 and the second counter electrode 154 are not conducted, the driving gear 140 is continuously controlled to rotate for a minimum step, and the steps are repeatedly performed.
Referring to fig. 8, the embodiment of the present invention further provides a null back cancellation device 200, where the null back cancellation device 200 includes:
a rotation module 210 for controlling the rotation of the driving gear 140 according to the adjustment command of the lens 130;
step S100 of the loop cancellation method provided in the embodiment of the present invention may be performed by the rotation module 210.
A judging module 220, configured to judge whether the driving gear 140 is meshed with the transmission gear 150;
the step S200 and the sub-steps of the loop cancellation method provided in the embodiment of the present invention may be executed by the determination module 220.
The adjusting module 230 is configured to control the driving gear 140 to rotate by a target step number if the driving gear 140 is meshed with the transmission gear 150, so as to adjust the focal length of the lens 130.
The step S300 and the step S400 of the loop cancellation method provided in the embodiment of the present invention may be executed by the adjustment module 230.
The receiving module 240 is configured to receive the adjustment instruction again.
Step S500 of the loop cancellation method provided in the embodiment of the present invention may be performed by the receiving module 240.
And the steering module 250 is used for judging whether the rotation directions of the two adjustment instructions are the same.
Step S600 of the loop cancellation method provided by the embodiment of the present invention may be performed 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 as well. The apparatus embodiments described above are merely illustrative, for example, flow diagrams 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 various embodiments of the present disclosure may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
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 essence or a part contributing to the prior art or a part of the technical solution, or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in 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, random Access Memory), a magnetic disk or an optical disk, or other various media capable of storing program codes.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a method of eliminating the backlash, 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, the method of eliminating the backlash includes:
controlling the rotation of the driving gear according to the adjusting instruction of the lens;
judging whether the driving gear is meshed with the transmission gear or not;
wherein the determining whether the driving gear is engaged with the transmission gear includes:
a first positive electrode is arranged on a first driving tooth surface of the driving gear, a second positive electrode is arranged on the first driving tooth surface of the driving gear, the first driving tooth surface is attached to the first driving tooth surface under the condition that the driving gear is meshed with the driving gear in a first direction, the first direction is the same as the current rotation direction of the adjusting instruction, whether the first positive electrode is conducted with the second positive electrode or not is judged, and if the first positive electrode is conducted with the second positive electrode, the driving gear is meshed with the driving gear;
or alternatively;
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 driving gear, the second driving tooth surface is attached to the second driving tooth surface under the condition that the driving gear is meshed with the driving gear in a second direction, the second direction is the same as the current rotation direction of the adjusting instruction, whether the first reverse electrode and the second reverse electrode are conducted or not is judged, and if the first reverse electrode and the second reverse electrode are conducted, the driving gear is meshed with the driving gear;
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.
2. The backlash eliminating method according to claim 1, wherein the step of controlling the rotation of the driving gear in accordance with the adjustment command of the lens comprises:
and controlling the driving gear to rotate by a minimum step length.
3. The null-back cancellation method of claim 1, wherein the null-back cancellation method further comprises:
receiving the adjusting instruction again;
judging whether the rotation directions of the two regulating instructions are the same or not;
and if the target steps are the same, executing the step of controlling the driving gear to rotate by the target steps corresponding to the current adjusting instruction so as to adjust the focal length of the lens.
4. A null-back cancellation method as claimed in claim 3, wherein said null-back cancellation method further comprises:
if the driving gears are different, judging whether the driving gears are meshed with the transmission gears or not; and if the driving gear is meshed with the transmission gear, controlling the driving gear to rotate by a target step number so as to adjust the focal length of the lens.
5. The utility model provides a device is eliminated to cavitation, its 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 meshing, its characterized in that, device is eliminated to cavitation includes:
the rotation module is used for controlling the rotation of the driving gear according to the adjusting instruction of the lens;
the device comprises a judging module, a first driving tooth surface of the driving gear is provided with a first positive electrode, a first driving tooth surface of the driving gear is provided with a second positive electrode, the first driving tooth surface is attached to the first driving tooth surface under the condition that the driving gear is meshed with the driving gear in a first direction, the first direction is the same as the current rotation direction of the adjusting instruction, the judging module is used for judging whether the first positive electrode is conducted with the second positive electrode, and if the first positive electrode is conducted with the second positive electrode, the driving gear is meshed with the driving gear;
or a first reverse electrode is arranged on a second driving tooth surface of the driving gear, a second reverse electrode is arranged on the second driving tooth surface of the driving gear, the second driving tooth surface is attached to the second driving tooth surface under the condition that the driving gear is meshed with the driving gear in a second direction, the second direction is the same as the current rotation direction of the adjusting instruction, and the judging module is used for judging whether the first reverse electrode is conducted with the second reverse electrode, and if the first reverse electrode is conducted with the second reverse electrode, the driving gear is meshed with the driving gear;
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.
6. An electronic device comprising a processor and a memory, the memory storing a computer program executable by the processor, the computer program implementing the loop cancellation method of any one of claims 1-4 when executed by the processor.
7. The electronic device of claim 6, wherein a first positive electrode is disposed on a first drive tooth surface of the drive gear, a second positive electrode is disposed on a first drive tooth surface of the drive gear, the electronic device further comprising a first conduction detection module, the first conduction detection module being connected to the processor, the first conduction detection module being electrically connected to the first positive electrode and the second positive electrode, respectively, and the conduction detection module detecting a current if the first positive electrode is in contact with the second positive electrode.
8. The electronic device of claim 6, wherein a first counter electrode is disposed on a second drive tooth surface of the drive gear, a second counter electrode is disposed on a second drive tooth surface of the drive gear, the electronic device further comprising a second conduction detection module, the second conduction detection module being connected to the processor, the second conduction detection module being electrically connected to the first counter electrode and the second counter electrode, respectively, and the second conduction detection module detecting a current if the first counter electrode is in contact with the second counter electrode.
9. A computer readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, implements the loop-back elimination method according to any of claims 1-4.
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