Oscillating mirror, control method and system thereof and readable storage medium

Abstract

The invention provides a swing mirror, a control method and system thereof and a readable storage medium. Wherein the oscillating mirror comprises an optical lens; the optical lens is arranged on the swing arm; the first permanent magnet is arranged at one end of the swing arm; the limiting mechanism comprises a first electromagnetic induction coil which is arranged corresponding to the first permanent magnet; the first adsorption magnet corresponds to the first electromagnetic induction coil and is used for adsorbing one end of the swing arm; and the controller is used for controlling connection and disconnection of the first electromagnetic induction coil. According to the swing mirror, good in-place keeping and anti-vibration effects can be achieved, magnets need to be used for attraction, the attraction force of the magnets needs to ensure that the swing mirror cannot be separated due to vibration and the like, and the peak current of the swing mirror switching motor is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical precision machinery, and particularly relates to a swinging mirror and its control method, system, and readable storage medium. Background Art

[0002] In an optoelectronic system, a swinging mechanism (referred to as a swinging mirror) equipped with a reflecting or transmitting lens is often used to achieve rapid switching of the optical path. During the switching process of the swinging mirror, there is no precision requirement, and it can swing at a relatively large angular velocity. After switching in place, the effect of in-place holding and anti-vibration is achieved through the magnetic suction force of a magnet.

[0003] Compared with other optical lens switching schemes, the swinging mirror scheme has the advantages of short switching time and high in-place accuracy, and is widely used in the design of optical systems. However, the swinging mirror scheme also has the following disadvantages:

[0004] (1) To control the switching time of the swinging mirror and achieve a faster switching speed, when switching in place quickly, there is a large impact force with the limit mechanism, which may cause deformation and damage.

[0005] (2) In order to achieve better in-place holding and anti-vibration effects, it is necessary to use a magnet for adsorption, and the magnetic suction force of the magnet needs to ensure that the swinging mirror will not break away due to vibration or other reasons. However, if the magnetic suction force is too large, it will cause a large torque to be required to break away from the magnet at the starting stage of the swinging mirror switching, resulting in too high a peak current of the swinging mirror switching motor.

[0006] Therefore, there is an urgent need for a swinging mirror and its control method, system, and readable storage medium that can achieve better in-place holding and anti-vibration effects, require the use of a magnet for adsorption, ensure that the swinging mirror will not break away due to vibration or other reasons, and have a lower peak current of the swinging mirror switching motor. Summary of the Invention

[0007] An embodiment of the present invention provides a swinging mirror.

[0008] An embodiment of the present invention provides a control method for a swinging mirror.

[0009] An embodiment of the present invention provides a control system for a swinging mirror.

[0010] An embodiment of the present invention provides a readable storage medium.

[0011] In view of this, a first aspect of the present invention proposes a swinging mirror, including an optical lens; a swing arm, on which the optical lens is disposed; a first permanent magnet, disposed at one end of the swing arm; a limit mechanism, including: a first electromagnetic induction coil, which is correspondingly disposed with the first permanent magnet; a first adsorption magnet, correspondingly disposed with the first electromagnetic induction coil, for adsorbing one end of the swing arm; and a controller, for controlling the on and off of the first electromagnetic induction coil.

[0012] Further, the controller includes: a relay.

[0013] Further, the limiting mechanism further includes: a first current-limiting resistor, one end of the first current-limiting resistor is connected to the relay, and the other end of the first current-limiting resistor is connected to the first electromagnetic induction coil.

[0014] Further, the swing mirror further includes a second permanent magnet disposed at the other end of the swing arm; the limiting mechanism further includes: a second electromagnetic induction coil disposed corresponding to the second permanent magnet; a second adsorption magnet disposed corresponding to the second electromagnetic induction coil for adsorbing the other end of the swing arm; and a controller further configured to control the on and off of the second electromagnetic induction coil.

[0015] Further, the limiting mechanism further includes: a second current-limiting resistor, one end of the second current-limiting resistor is connected to the relay, and the other end of the second current-limiting resistor is connected to the second electromagnetic induction coil.

[0016] According to a second aspect of the present invention, there is provided a control method for a swing mirror for the swing mirror described in the first technical aspect. The control method of the swing mirror includes: when the swing arm vibrates at the initial position, controlling the controller to turn on, and the first electromagnetic induction coil is energized to prevent the first permanent magnet from moving away from the first electromagnetic induction coil.

[0017] Further, the control method of the swing mirror further includes: when the swing arm starts to rotate, controlling the controller to turn off, and the first electromagnetic induction coil is de-energized.

[0018] Further, the control method of the swing mirror further includes: when the swing arm rotates, controlling the controller to turn on, and the first electromagnetic induction coil is energized.

[0019] According to a third aspect of the present invention, there is provided a control system for a swing mirror, including a memory and a processor. The memory stores a program or instruction that can be run on the processor. When the program or instruction is executed by the processor, the steps of the control method of the swing mirror in the second aspect or any possible implementation manner of the second aspect are implemented.

[0020] According to a fourth aspect of the present invention, there is provided a readable storage medium, on which a program and / or instruction is stored. When the program and / or instruction is executed by the processor, the steps of the control method of the swing mirror in the second aspect or any possible implementation manner of the second aspect are implemented.

[0021] The beneficial effects brought by the present invention are as follows: Through the electromagnetic induction coil, electromagnetic damping buffering is formed for the permanent magnet on the swing arm, reducing the impact force when the swing mirror switches in place; through the assistance of electromagnetic damping, the influence of vibration on the swing mirror is weakened, and the magnetic field strength requirement for the adsorption magnet on the limit mechanism is reduced, which is beneficial to reducing the peak current when the motor starts; by controlling the electromagnetic coil to disconnect through the relay, there is no electromagnetic damping during the start-up switching, reducing the load and peak current of the swing mirror motor; the structure is simple, it can work without an excitation power supply, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the working principle of electromagnetic damping provided by an embodiment of the present invention;

[0023] Figure 2 It is one of the schematic diagrams of the structure of the swing mirror and the limit mechanism provided by an embodiment of the present invention;

[0024] Figure 3 It is another schematic diagram of the structure of the swing mirror and the limit mechanism provided by an embodiment of the present invention;

[0025] Figure 4 It is yet another schematic diagram of the structure of the swing mirror and the limit mechanism provided by an embodiment of the present invention;

[0026] Figure 5 It is a schematic flow diagram of the control method of the swing mirror provided by an embodiment of the present invention;

[0027] Figure 6 It is a block diagram of the control system of the swing mirror provided by an embodiment of the present invention.

[0028] Among them, Figures 1 to 4 The corresponding relationship between the reference numerals and the component names is as follows:

[0029] 1 Optical lens, 2 Swing arm, 3 First permanent magnet, 4 Limit mechanism, 41 First electromagnetic induction coil, 42 First adsorption magnet, 43 Controller, 431 Relay, 44 First current-limiting resistor, 45 Second electromagnetic induction coil, 46 Second adsorption magnet, 47 Second current-limiting resistor, 5 Second permanent magnet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] The first aspect of the present invention proposes a swing mirror, asFigure 1 , Figure 2 , Figure 3 and Figure 4 As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the swinging mirror includes an optical lens 1; a swinging arm 2, on which the optical lens 1 is arranged; a first permanent magnet, arranged at one end of the swinging arm 2; a limiting mechanism 4, including: a first electromagnetic induction coil 41, which is arranged corresponding to the first permanent magnet 3; a first adsorption magnet 42, arranged corresponding to the first electromagnetic induction coil 41 for adsorbing one end of the swinging arm 2; and a controller 43 for controlling the connection and disconnection of the first electromagnetic induction coil 41.

[0032] In this embodiment, by arranging the first electromagnetic induction coil 41, electromagnetic damping buffering is formed for the first permanent magnet 3 on the swinging arm 2, reducing the impact force when the swinging mirror switches in place; through electromagnetic damping assistance, the influence of vibration on the swinging mirror is weakened, the magnetic field strength requirement for the adsorption magnet on the limiting mechanism 4 is reduced, which is beneficial to reducing the peak current when the motor starts; by controlling the disconnection of the electromagnetic coil by the controller 43, there is no electromagnetic damping during the starting of the switch, reducing the load and peak current of the swinging mirror motor; the structure is simple, it can work without an excitation power supply, and the reliability is high.

[0033] Further, the controller 43 includes: a relay 431.

[0034] Further, the limiting mechanism 4 further includes: a first current-limiting resistor 44, one end of the first current-limiting resistor 44 is connected to the relay 431, and the other end of the first current-limiting resistor 44 is connected to the first electromagnetic induction coil 41.

[0035] Further, as shown in Figure 2 , Figure 3 and Figure 4 the swinging mirror further includes a second permanent magnet 5, arranged at the other end of the swinging arm 2; the limiting mechanism 4 further includes: a second electromagnetic induction coil 45, which is arranged corresponding to the second permanent magnet 5; a second adsorption magnet 46, arranged corresponding to the second electromagnetic induction coil 45 for adsorbing the other end of the swinging arm 2; and the controller 43 is further used for controlling the connection and disconnection of the second electromagnetic induction coil 45.

[0036] Further, the limiting mechanism 4 further includes: a second current-limiting resistor 47, one end of the second current-limiting resistor 47 is connected to the relay 431, and the other end of the second current-limiting resistor 47 is connected to the second electromagnetic induction coil 45.

[0037] The beneficial effects brought by the present invention are as follows: Through the electromagnetic induction coil, electromagnetic damping buffering is formed for the permanent magnet on the swing arm 2, reducing the impact force when the swing mirror switches in place; through electromagnetic damping assistance, the influence of vibration on the swing mirror is weakened, and the magnetic field strength requirement for the adsorption magnet on the limit mechanism 4 is reduced, which is beneficial to reducing the peak current when the motor starts; by controlling the electromagnetic coil to disconnect through the relay 431, there is no electromagnetic damping during startup switching, reducing the load and peak current of the swing mirror motor; the structure is simple, it can work without an excitation power supply, and the reliability is high.

[0038] Further, the swing mirror of the present invention consists of an optical lens 1, a swing arm 2, and a permanent magnet, and the limit mechanism 4 consists of an electromagnetic induction coil, a relay 431, a current-limiting resistor, and an adsorption magnet.

[0039] As Figure 2 shown, in the initial state, the swing arm 2 of the swing mirror is in contact with the limit mechanism 4, and the relay 431 is in a closed and connected state. At this time, if in a vibration environment, the swing arm 2 is affected by vibration and disengages from the limit mechanism 4, the permanent magnet on the swing arm 2 will pull out of the electromagnetic coil, and the electromagnetic induction effect will generate an attractive force that hinders the magnet from moving away, achieving the effect of electromagnetic damping to decelerate the swing arm 2 until it stops.

[0040] When the optical lens 1 needs to be switched to the other side, the relay 431 needs to be switched to the off state first through a control signal, and at this time, the electromagnetic induction coil will have no electromagnetic damping effect. Then the swing mirror motor is powered on and starts, driving the swing arm 2 to start rotating. Delay for about 2 seconds (the specific delay time is adjusted according to the angular speed at which the motor drives the swing arm 2 to rotate, ensuring that the magnet has sufficient time to move away from the electromagnetic induction coil and leaving an appropriate margin). Then the relay 431 is switched to the closed and connected state through a control signal to prepare for the optical lens 1 to switch back.

[0041] During the process of the optical lens 1 switching back to this side, the relay 431 remains in the closed and connected state. When the optical lens 1 is about to switch in place, the magnet approaches the electromagnetic induction coil, and the closed and connected electromagnetic induction coil generates an electromagnetic damping effect, slowing down the speed of the swing mirror and reducing the impact force when switching in place with the limit mechanism 4.

[0042] The limit mechanism 4 of the present invention should be provided on both sides where the optical lens 1 switches.

[0043] 4.1 Principle of Electromagnetic Damping

[0044] When a magnet passes through a closed electromagnetic coil, an induced current and an induced magnetic field will be generated in the coil. According to Lenz's law, when the magnet is inserted into the electromagnetic coil, the electromagnetic induction effect will generate a repulsive force that hinders the insertion of the magnet. When the magnet leaves the electromagnetic coil, the electromagnetic induction effect will generate an attractive force that hinders the magnet from moving away. The magnitude of the repulsive force or attractive force F (collectively referred to as electromagnetic damping) is proportional to the speed ν of the magnet inserted or away, the magnetic field strength B of the magnet, and the number of turns N of the coil, and inversely proportional to the coil impedance R.

[0045] F ∝ NBν / R.

[0046] 4.2 In-place Damping Buffer Principle

[0047] A magnet is provided on the swing arm 2 of the swing mirror, and an electromagnetic induction coil is provided at a position on the limit mechanism 4 opposite to the magnet. A relay 431 for controlling the on / off of the coil is provided in the closed loop of the electromagnetic induction coil.

[0048] When the swing arm 2 is about to reach the in-place position, the speed of driving the magnet into the coil is relatively fast. At this time, a large induced electromotive force can be generated in the coil of the limit mechanism 4. At this time, the relay 431 is turned on, and the induced electromotive force can generate a large induced current and an induced magnetic field. The direction of the coil induced magnetic field always hinders the relative movement of the magnet and the coil, showing a strong damping effect, which can significantly buffer the impact force when the swing mirror reaches the in-place position. The resistor is used to limit the coil current to prevent the coil from being burned out due to excessive current. In addition, it is also used to consume the kinetic energy of the magnet. A resistor with a higher withstand power should be selected.

[0049] 4.3 Vibration Resistance Principle

[0050] After the swing arm 2 switches to the in-place position, the relay 431 remains on. In a vibrating environment, if the swing arm 2 is affected by vibration and disengages from the limit mechanism 4, the magnet of the swing arm 2 is withdrawn from the electromagnetic coil, and the electromagnetic induction effect will generate an attractive force that hinders the magnet from moving away, achieving the effect of electromagnetic damping to decelerate the swing arm 2. The vibration energy will be dissipated in the electromagnetic coil and the resistor, and the swing arm 2 that disengages from the limit mechanism 4 will be more easily pulled back to the limit mechanism 4 by the attracting magnet.

[0051] Due to the assistance of electromagnetic damping, an attracting magnet with a smaller magnetic field strength can be selected on the limit mechanism 4, and the torque required for the swing arm 2 to start is also lower, which is beneficial to reducing the peak current when the motor starts.

[0052] 4.4 Starting without Damping Principle

[0053] When the swing arm 2 switches to start, the relay 431 is turned off, and the induced electromotive force in the electromagnetic coil cannot generate an induced current and an induced magnetic field. The coil will not hinder the relative movement of the magnet and the coil, and there is no electromagnetic damping effect, which does not affect the additional load on the driving motor of the swing arm 2 and is beneficial to reducing the peak current when the motor starts.

[0054] According to a second aspect of the present invention, there is provided a control method for a swinging mirror, which is used for the swinging mirror described in the first technical aspect, as Figure 5 shown, the control method of the swinging mirror includes:

[0055] S501: When the swing arm vibrates at the initial position, control the controller to turn on, and the first electromagnetic induction coil is energized to prevent the first permanent magnet from moving away from the first electromagnetic induction coil.

[0056] Further, the control method of the swinging mirror further includes: when the swing arm starts to rotate, control the controller to turn off, and the first electromagnetic induction coil is de-energized.

[0057] Further, the control method of the swinging mirror further includes: when the swing arm rotates, control the controller to turn on, and the first electromagnetic induction coil is energized.

[0058] According to a third aspect of the present invention, there is provided a control system 500 for a swinging mirror, as Figure 6 shown, including a memory 501 and a processor 502. The memory 501 stores a program or instruction that can be run on the processor 502. When the program or instruction is executed by the processor 502, the steps of the control method of the swinging mirror in the second aspect or any possible implementation manner of the second aspect are implemented.

[0059] According to a fourth aspect of the present invention, there is provided a readable storage medium, on which a program and / or instruction are stored. When the program and / or instruction are executed by a processor, the steps of the control method of the swinging mirror in the second aspect or any possible implementation manner of the second aspect are implemented.

[0060] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A swing mirror, characterized in that, Comprising: An optical lens; A swing arm, with the optical lens disposed on the swing arm; A first permanent magnet, arranged at one end of the swing arm; A limiting mechanism, including: a first electromagnetic induction coil, which is correspondingly arranged with the first permanent magnet; A first adsorption magnet, correspondingly arranged with the first electromagnetic induction coil, for adsorbing one end of the swing arm; A controller, used to control the connection and disconnection of the first electromagnetic induction coil.

2. The swing mirror according to claim 1, wherein, The controller includes: a relay.

3. The galvanometer according to claim 2, wherein, The limiting mechanism further includes: a first current-limiting resistor, one end of which is connected to the relay, and the other end of which is connected to the first electromagnetic induction coil.

4. The galvanometer according to claim 3, characterized in that, It further includes a second permanent magnet, arranged at the other end of the swing arm; The limiting mechanism further includes: a second electromagnetic induction coil, which is correspondingly arranged with the second permanent magnet; A second adsorption magnet, correspondingly arranged with the second electromagnetic induction coil, for adsorbing the other end of the swing arm; The controller is further used to control the connection and disconnection of the second electromagnetic induction coil.

5. The swing mirror according to claim 4, wherein The limiting mechanism further includes: a second current-limiting resistor, one end of which is connected to the relay, and the other end of which is connected to the second electromagnetic induction coil.

6. A control method for a swing mirror, characterized in that, For a swing mirror as described in any one of claims 1 to 5, the control method of the swing mirror includes: When the swing arm vibrates at the initial position, control the controller to turn on, the first electromagnetic induction coil is energized, and it hinders the first permanent magnet from moving away from the first electromagnetic induction coil.

7. The control method of the swinging mirror according to claim 6, wherein, When the swing arm starts to rotate, control the controller to turn off, and the first electromagnetic induction coil is de-energized.

8. The control method of the swinging mirror according to claim 7, characterized in that, After the swing arm rotates, control the controller to turn on, and the first electromagnetic induction coil is energized.

9. A control system for a swing mirror, characterized in that, Comprising a memory and a processor, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, it realizes the steps of the control method of the swing mirror as described in any one of claims 6 to 8.

10. A readable storage medium, characterized in that, Stored thereon are a program and / or an instruction, and when the program and / or the instruction is executed by the processor, it realizes the steps of the control method of the swing mirror as described in any one of claims 6 to 8.

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