CN117096717B - Method for realizing automatic point changing of laser crystal - Google Patents
Method for realizing automatic point changing of laser crystal Download PDFInfo
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- CN117096717B CN117096717B CN202311363629.8A CN202311363629A CN117096717B CN 117096717 B CN117096717 B CN 117096717B CN 202311363629 A CN202311363629 A CN 202311363629A CN 117096717 B CN117096717 B CN 117096717B
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- 239000013078 crystal Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- ZLHLYESIHSHXGM-UHFFFAOYSA-N 4,6-dimethyl-1h-imidazo[1,2-a]purin-9-one Chemical compound N=1C(C)=CN(C2=O)C=1N(C)C1=C2NC=N1 ZLHLYESIHSHXGM-UHFFFAOYSA-N 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000015654 memory Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 1
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- 238000012423 maintenance Methods 0.000 description 1
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- 238000003672 processing method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1026—Controlling the active medium by translation or rotation, e.g. to remove heat from that part of the active medium that is situated on the resonator axis
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Abstract
The invention relates to the field of system control, and discloses a method for realizing automatic point replacement of a laser crystal, which comprises the steps of flexibly configuring the number of point positions according to the size of a crystal prototype, configuring two high-precision stepping motors, wherein one motor X is used for controlling the crystal to move along the X-axis direction, and the other motor Y is used for controlling the crystal to move along the Y-axis direction, so that the service time of the crystal is prolonged to the maximum extent; the manual point changing and the automatic point changing are supported in parallel, so that the selection of a user is facilitated; the automatic point replacement is accurate, user intervention is not needed, and meanwhile, the serial ports of the TTL level are converted into interfaces such as RS485 and RS232, so that remote control communication of the system is facilitated.
Description
Technical Field
The invention relates to an optical crystal processing method, in particular to a method for realizing automatic point changing of a laser crystal.
Background
The optical crystal (hereinafter referred to as crystal) is the most core optical device in the laser, the laser facula energy is high, and energy focusing is on a point, in the laser, if the facula of high energy shines crystal same point for a long time, can cause the damage to the crystal, leads to the light-emitting effect not good, needs to change the crystal and solves this problem.
In order to reduce the number of crystal replacement, prolong the service life of the optical crystal, save maintenance cost, and improve user experience, the following common methods are adopted: when the laser works for a certain period of time, the crystal position is manually adjusted by pushing the railing, so that light spots can irradiate different parts of the crystal. The method has the defects that manual adjustment is not fine, deviation is large, the push-pull rod moves linearly, light spots can only be switched at points on a straight line, and other areas on a crystal cannot be utilized;
the motor drives the crystal to change the point, and the stepping motor drives the crystal to move, so that the purpose of switching the irradiation point of the light spot is achieved.
Disclosure of Invention
To achieve the above object, the present application provides a method for implementing automatic point changing of a laser crystal, the method comprising: the crystal is arranged in the laser to move along the horizontal X-axis direction and the vertical Y-axis direction; two high-precision stepping motors are configured, wherein one motor X is used for controlling the crystal to move along the X-axis direction, and the other motor Y is used for controlling the crystal to move along the Y-axis direction; the motor Y base is fixed on the base in the laser optical cavity, and the moving part moves in a telescopic way along the vertical direction; the motor X base is fixed on the side edge of the inner part of the optical cavity of the laser, and the moving part moves in a telescopic way along the horizontal direction; the crystal is quadrilateral in shape, the bottom of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the motion part of the motor Y, and the crystal moves along the vertical direction along with the motor Y; the side edge of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the moving part of the motor X, and the crystal moves along the horizontal direction along with the motor X;
wherein the running positions of the motor X and the motor Y are in units of step length steps, and coordinate values of crystal points (X, Y) are configured in units of steps;
the serial port of the TTL level is configured as a hardware communication interface for the motor driver to move and is communicated with the master controller.
Further, the method further comprises that the motor is further provided with a TTL serial port-to-RS 485 converter, and the converter is used for long-distance communication expansion.
Further, the method further includes setting coordinate values of the point start points (X0, Y0) by a user, setting the X-axis point spacing Dx by the user, setting the Y-axis point spacing Dy, and changing the point time t.
Further, the configuration starting point coordinates are: x0=200 (steps), y0=200 (steps), dx=100 (steps), dy=100 (steps), t=500 h.
Further, the data set by the user is stored in the main controller, and the data set by the user is obtained from the main controller through a serial port or an Ethernet protocol.
Further, the main control is communicated with the motor driver through a TTL serial port or RS485 to control the movement of the motor X and the motor Y.
Further, the main controller creates a circular linked list according to the stored data, the node information for creating the linked list is composed of a structure body, and the structure body elements comprise
Where int represents the data type as integer 4 bytes long, point_num is the ordering of the current node in the linked list, run_time is the time the current point has been running, X represents the X-axis coordinate of the current point, and Y represents the Y-axis coordinate of the current point.
Further, 1 hour before the point is changed, the main controller informs the user of the point changing countdown through the liquid crystal screen and the upper computer software popup window.
Further, a manual point changing device is configured for changing a user to any one effective point, wherein the effective point means that the working time of the point is not longer than the cut-off time; otherwise, if the manual point change is an invalid point, the current point is not available, and the retry is requested.
Further, when the light spot works to the last available point, the working life of the crystal is about to end, and the main controller informs a user to prepare for replacing the crystal in advance through a liquid crystal screen and an upper computer software popup window before the working time is up; the light spot works at the last available point position, after the time is cut off, the working life of the crystal is ended, the main controller forcibly stops supplying power to the laser power supply, the laser stops working, and prompt information is given through the liquid crystal display and upper computer software.
The technical scheme of the invention discloses a method for realizing automatic point replacement of a laser crystal, which comprises the steps of flexibly configuring the number of point positions according to the size of a crystal prototype, configuring two high-precision stepping motors, wherein one motor X is used for controlling the crystal to move along the X-axis direction, and the other motor Y is used for controlling the crystal to move along the Y-axis direction, so that the service time of the crystal is prolonged to the greatest extent; the manual point changing and the automatic point changing are supported in parallel, so that the selection of a user is facilitated; the automatic point replacement is accurate, user intervention is not needed, and meanwhile, the serial ports of the TTL level are converted into interfaces such as RS485 and RS232, so that remote control communication of the system is facilitated.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the invention in any way, in which
FIG. 1 is a schematic diagram of the crystal sites of the present method.
FIG. 2 is a schematic diagram of the crystal running step size of the present method.
Fig. 3 is a schematic flow chart of the method.
Detailed Description
These and other features and characteristics of the present invention, as well as the methods of operation and functions of the related elements of structure, the combination of parts and economies of manufacture, may be better understood with reference to the following description and the accompanying drawings, all of which form a part of this specification. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the invention. It will be understood that the figures are not drawn to scale. Various block diagrams are used in the description of the various embodiments according to the present invention.
Example 1
The invention provides a realization method of a laser crystal changing point, as shown in figure 1, the crystal can move in the laser along the horizontal (X-axis) direction and the vertical (Y-axis) direction, so that any point position on the crystal surface can be irradiated by light spots; two high-precision stepping motors, one of which controls the movement of the crystal in the X-axis direction (hereinafter referred to as motor X) and the other of which controls the movement of the crystal in the Y-axis direction (hereinafter referred to as motor Y); the motor Y base is fixed on the base in the laser optical cavity, and the moving part can move in a telescopic way along the vertical direction; the motor X base is fixed on the side edge of the inner part of the optical cavity of the laser, and the moving part can move in a telescopic way along the horizontal direction; the crystal is square in shape, the bottom of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the motion part of the motor Y, and the crystal moves along the vertical direction along with the motor Y; the side edge of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the moving part of the motor X, and the crystal moves along the horizontal direction along with the motor X; because of the motor X and the motor Y, the crystal can be controlled to move in steps along the horizontal direction and the vertical direction respectively, so that light spots pass through different points of the crystal, and the crystal changing point is realized. The realization method of the crystal change point is as follows:
by way of example, as shown in fig. 1, 48 points in 6 rows and 8 columns are virtually represented, and motor X and motor Y are moved by the position so that the spot can strike the position of each point on the crystal. As shown in fig. 1, for convenience of description, the first point at the lower right corner is defined as a coordinate 0 point (X0, Y0), and X1, X2, X3, X4, X5, X6, X7 are sequentially located from the coordinate 0 point along the X-axis arrow direction on the abscissa, and Y1, Y2, Y3, Y4, Y5 are sequentially located from the coordinate 0 point along the Y-axis arrow direction on the ordinate, that is, the coordinate positions of 48 points are characterized. As shown in fig. 2. Since the motor X, motor Y operates in units of step sizes (steps), the (X, Y) coordinate values are also in units of steps.
The invention adopts a serial port of TTL level as a hardware communication interface for the motor driver to move, and in order to realize long-distance control, a TTL-to-RS 485 converter can be additionally arranged for long-distance communication expansion. The number of rows and columns of the point positions are required to be set by a user, and as shown in fig. 1, the number of rows is set to 6, and the number of columns is set to 8; the user is required to set the point start point, i.e., the coordinate value of 0 point (x 0, y 0), such as:
x0＝200(steps)
y0＝200(steps)
the user is required to set the X-axis point spacing Dx and set the Y-axis point spacing Dy, for example:
Dx＝100(steps)
Dy＝100(steps)
the user is required to set the automatic point changing time t, namely how long the light spot runs at the current point location and then switches to the next point location for running. For example, t=500 h (h represents hours)
Preferably, the data set by the user is stored in the main controller, the power is not lost, the user can modify for many times and store for many times, and the data set by the user can be obtained from the main controller through a serial port or an Ethernet protocol. The main control can be communicated with the motor driver through a TTL serial port or RS485 to control the movement of the motor X and the motor Y.
In a specific embodiment, the main controller creates a circular linked list according to the stored data, as shown in fig. 1 for example, for 48 total points, so the nodes of the linked list are 48, and the last node (x 7, y 5) of the linked list points to point to 0 point (x 0, y 0).
The node information for creating the linked list consists of a structural body, wherein the structural body element comprises
Where int represents the data type as integer 4 bytes long, point_num is the ordering of the current node in the linked list, run_time is the time the current point has been running, X represents the X-axis coordinate of the current point, and Y represents the Y-axis coordinate of the current point.
As shown in fig. 3:
1. because the focal point temperature of the spot irradiated by the light spot is too high, the temperature of the adjacent spot is also high, and after the working time of the current spot is cut off, the next spot of the spot is not the adjacent position, but operates at one spot of the interval. Such as:
in line 1, the spot sequentially operates at the point coordinates of (x 0, y 0), (x 2, y 0), (x 4, y 0), (x 6, y 0), (x 1, y 0), (x 3, y 0), (x 5, y 0), (x 7, y 0)
And so on for other rows.
2. After the light spot runs to the last point of the current line, the light spot enters the next line to run, for example:
after the working time of the light spot at the last working point position (x 7, y 0) of the first row is cut off, the light spot enters the first point position (x 1, y 0) of the second row.
3. And 1 hour before the point is changed, the main controller informs a user of the countdown of the point change through the liquid crystal screen and the upper computer software popup window.
4. The user can manually change the point and can change to any effective point. The effective point location means that the working time of the point location does not exceed the cut-off time. Otherwise, if the manual point change is an invalid point, the current point is not available, and the retry is requested.
5. Because the manual point change can be arbitrarily selected, if the point is changed from a large point to a small point, namely when the X and Y coordinate subscripts are changed from large to small, the motor of the corresponding coordinate axis returns to the point 0 (X0, Y0) first and then moves to the position of the point change, and the position deviation generated by the reciprocating motion of the motor can be greatly reduced. Such as:
the manual point change is carried out from the (X3, Y3) position to the (X2, Y2) position, firstly, the motor corresponding to the X axis returns to the X0 point, then moves to the X2 position, then the motor corresponding to the Y axis returns to the Y0 point, and then moves to the Y2 position.
6. In order to ensure the safety of equipment and personnel, the main controller can automatically close the optical gate of the laser before the crystal is changed, and the light emission is stopped. After the point is changed, the main controller informs a user to manually open the optical gate of the laser through the liquid crystal screen and the upper computer software popup window.
7. When the light spot works to the last available point position, the working life of the crystal is about to end, and the main controller informs a user to prepare for replacing the crystal in advance by popup window for 3 times through the liquid crystal screen and upper computer software before the working time is up.
8. The light spot works at the last available point position, after the time is cut off, the working life of the crystal is ended, the main controller forcibly stops supplying power to the laser power supply, the laser stops working, and prompt information is given through the liquid crystal display and upper computer software.
It will be appreciated by those skilled in the art that implementing all or part of the above-described embodiment method may be implemented by a computer program to instruct related hardware, where the program may be stored in a computer readable storage medium, and the program may include the above-described embodiment method when executed. Wherein the storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
As used in this application, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, the components may be, but are not limited to: a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of example, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. Furthermore, these components can execute from various computer readable media having various data structures thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (8)
1. A method for implementing automatic spot changing of a laser crystal, the method comprising: the crystal is arranged in the laser to move along the horizontal X-axis direction and the vertical Y-axis direction; two high-precision stepping motors are configured, wherein one motor X is used for controlling the crystal to move along the X-axis direction, and the other motor Y is used for controlling the crystal to move along the Y-axis direction; the motor Y base is fixed on the base in the laser optical cavity, and the moving part moves in a telescopic way along the vertical direction; the motor X base is fixed on the side edge of the inner part of the optical cavity of the laser, and the moving part moves in a telescopic way along the horizontal direction; the crystal is quadrilateral in shape, the bottom of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the motion part of the motor Y, and the crystal moves along the vertical direction along with the motor Y; the side edge of the crystal is adhered to the upper part of the movable groove, the bottom of the movable groove is adhered to the moving part of the motor X, and the crystal moves along the horizontal direction along with the motor X;
wherein, the running positions of the motor X and the motor Y are in units of step length steps, and coordinate values of crystal points (X, Y) are configured in units of steps;
the TTL serial port is configured as a hardware communication interface for the motor driver to move and is communicated with the main controller; the main controller is communicated with the motor driver through a TTL serial port and controls the movement of the motor X and the motor Y;
the method further comprises that the motor is further provided with a TTL serial port-RS 485 converter, and the converter is used for remote communication expansion;
the method further comprises the steps that a user sets coordinate values of point location starting points (X0, Y0), the user sets X-axis point location distance Dx, sets Y-axis point location distance Dy and point replacement time t.
2. The method of claim 1, further characterized by: the configuration starting point coordinates are: x0=200 (steps), y0=200 (steps), dx=100 (steps), dy=100 (steps), t=500 h.
3. The method of claim 2, further characterized by: the data set by the user are stored in the main controller, and the data set by the user are acquired from the main controller through a serial port or an Ethernet protocol.
4. A method as claimed in claim 3, further characterized by: the quadrangle is rectangular.
5. The method as recited in claim 4, further characterized by: the main controller creates a circular linked list according to the stored data, the node information for creating the linked list is composed of a structural body, and the structural body elements comprise
struct node
{
int point_num，
int run_time，
int x，
int y，
}
Where int represents the data type as integer 4 bytes long, point_num is the ordering of the current node in the linked list, run_time is the time the current point has been running, X represents the X-axis coordinate of the current point, and Y represents the Y-axis coordinate of the current point.
6. The method of claim 5, wherein: and 1 hour before the point is changed, the main controller informs a user of the countdown of the point change through the liquid crystal screen and the upper computer software popup window.
7. The method of claim 6, wherein: the method comprises the steps that a manual point changing is configured for a user to change to any effective point, wherein the effective point is the point of which the working time does not exceed the deadline; otherwise, if the manual point change is an invalid point, the current point is not available, and the retry is requested.
8. The method of claim 7, wherein: when the light spot works to the last available point position, the working life of the crystal is about to end, and the main controller informs a user to prepare for replacing the crystal in advance through a liquid crystal screen and an upper computer software popup window before the working time is up; the light spot works at the last available point position, after the time is cut off, the working life of the crystal is ended, the main controller forcibly stops supplying power to the laser power supply, the laser stops working, and prompt information is given through the liquid crystal display and upper computer software.
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| CN110445006A (en) * | 2019-07-31 | 2019-11-12 | 苏州创鑫激光科技有限公司 | The control method of frequency-changer crystal point a kind of and frequency-changer crystal change point methods |
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| US6459473B1 (en) * | 2000-07-27 | 2002-10-01 | National Science Council | Drive of a wafer stepper |
| CN103715596A (en) * | 2013-12-18 | 2014-04-09 | 合肥知常光电科技有限公司 | Solid ultraviolet laser third harmonic generation crystal automatic point-changing device and method |
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