阅读说明：本技术 一种红外激光光斑位置检测系统及方法 (Infrared laser spot position detection system and method ) 是由 陈晨 曲娜 于海娇 于 2021-10-25 设计创作，主要内容包括：本发明属于红外激光技术领域,尤其为一种红外激光光斑位置检测系统及方法,所述系统包括激光器、第一分光镜、第二分光镜、光斑位置检测模块、反射镜片、第三分光镜、光斑位置校验模块和控制器,所述系统以光斑位置校验模块的检测结果作为对光斑位置检测模块检测结果的校验依据。本发明利用呈矩形阵列布置的多分光镜和一反射镜组合成具有两处光斑检测点和一处激光束光斑作用点,相对布置光斑位置检测模块和光斑位置校验模块对光斑位置同时进行检测,具备检测及校验功能,以高可靠性光斑位置检测手段作为依靠实现高精度激光束位移控制,系统检测结构及检测方法简单、有效,具有较高的经济效益与推广价值。(The invention belongs to the technical field of infrared laser, and particularly relates to an infrared laser spot position detection system and method. The invention combines the multi-spectroscope and the reflector which are arranged in a rectangular array to form the laser beam displacement detection system which has two light spot detection points and one laser beam light spot action point, and the light spot position detection module and the light spot position verification module which are oppositely arranged detect the light spot position at the same time, thereby having the functions of detection and verification, realizing high-precision laser beam displacement control by taking high-reliability light spot position detection means as a dependence, and having simple and effective system detection structure and detection method and higher economic benefit and popularization value.)

1. An infrared laser facula position detecting system which is characterized in that: the method comprises the following steps:

a laser (1) for emitting a laser beam;

a first beam splitter (2) for reflecting a part of the laser beam and transmitting another part of the laser beam;

a second beam splitter (3) for reflecting the laser beam reflected by the first beam splitter (2) while transmitting a part of the laser beam;

the light spot position detection module (4) is arranged on the laser transmission path of the second spectroscope (3) and is used for detecting the position of the light spot of the laser beam transmitted by the second spectroscope (3);

a reflection mirror (5) for reflecting a part of the laser beam transmitted through the first beam splitter (2);

the third beam splitter (6) is arranged at the intersection of a part of the laser beam path reflected by the reflecting mirror (5) and a part of the laser beam path reflected by the second beam splitter (3), a part of the laser beam reflected by the reflecting mirror (5) after being transmitted by the third beam splitter (6) and a part of the laser beam reflected by the second beam splitter (3) after being reflected by the third beam splitter (6) are overlapped to form a first composite laser beam, and a part of the laser beam reflected by the reflecting mirror (5) after being reflected by the third beam splitter (6) and a part of the laser beam reflected by the second beam splitter (3) after being refracted by the third beam splitter (6) are overlapped to form a second composite laser beam;

the light spot position checking module (7) is arranged on a laser transmission path of the third beam splitter (6) and is used for carrying out position detection on the first composite laser beam, and a detection result is used as a checking basis for a detection result of the light spot position detection module (4);

and the controller (8) is electrically connected with the laser (1), the light spot position detection module (4) and the light spot position verification module (7) respectively and is used for processing the light spot position electric signal output by the light spot position detection module (4) and the light spot position electric signal output by the light spot position verification module (7) and verifying the detection result of the light spot position detection module (4) by taking the detection result of the light spot position verification module (7) as a verification basis.

2. The infrared laser spot position detection system of claim 1, wherein: the first spectroscope (2), the second spectroscope (3), the reflecting mirror (5) and the third spectroscope (6) are arranged in a rectangular array.

3. The infrared laser spot position detection system of claim 1, wherein: the light spot position detection module (4) and the light spot position verification module (7) adopt the same light spot position detector, and the mounting height and the mounting structure of the light spot position detection module (4) and the light spot position verification module (7) are consistent.

4. The infrared laser spot position detection system of claim 1, wherein: the infrared laser light spot position detection system further comprises an alarm module (9) electrically connected with the controller (8), wherein the alarm module (9) is used for giving an alarm when the detection result of the light spot position detection module (4) is inconsistent with the detection result of the light spot position verification module (7).

5. An infrared laser spot position detection method, which is realized based on the infrared laser spot position detection system of any one of claims 1 to 4, and is characterized in that: the method comprises the following steps:

s1, controlling the laser (1) to emit laser beams through the controller (8);

s2, reflecting one part of the laser beam emitted by the laser (1) to the second beam splitter (3) through the first beam splitter (2), and transmitting the other part of the laser beam to the reflecting lens (5) through the first beam splitter (2);

s3, reflecting one part of the laser beam reflected to the second beam splitter (3) to the third beam splitter (6), transmitting the other part of the laser beam to the light spot position detection module (4), controlling the light spot position detection module (4) to detect the position of the light spot of the part of the laser beam through the controller (8), and sending a light spot position electric signal to the controller (8);

s4, reflecting the laser beam transmitted to the reflecting mirror (5) onto a third beam splitter (6), overlapping a part of the laser beam reflected by the reflecting mirror (5) after being transmitted by the third beam splitter (6) and a part of the laser beam reflected by the second beam splitter (3) after being reflected by the third beam splitter (6) into a first composite laser beam, controlling a light spot position verification module (7) through a controller (8) to detect the position of a light spot of the first composite laser beam, and sending a light spot position electric signal to the controller (8);

s5, the controller (8) processes the electric signal of the spot position output by the spot position detection module (4) and the electric signal of the spot position output by the spot position verification module (7), and verifies the detection result of the spot position detection module (4) by taking the detection result of the spot position verification module (7) as a verification basis.

6. The infrared laser spot position detection method according to claim 5, characterized in that: when the detection result of the light spot position detection module (4) is inconsistent with the detection result of the light spot position verification module (7), the controller (8) sends an alarm instruction to the alarm module (9), and the alarm module (9) gives an alarm.

Technical Field

The invention relates to the technical field of infrared laser, in particular to an infrared laser spot position detection system and method.

Background

The laser processing system mainly comprises a laser, a light path system and a processing machine. The laser is the center of the whole laser processing system, the main function is to produce laser, the laser is various, but the principle of producing laser is basically the same. The laser mainly comprises an excitation system, a laser substance and an optical resonant cavity.

The laser beam output by the laser needs to be transmitted and processed by an optical path system to meet different processing requirements, wherein the optical path system comprises a light beam straight transmission channel, a light beam refraction part and a focusing or scattering system. The straight transmission channel is mainly mirror reflection and fiber transmission. At present, optical fiber is adopted to transmit light waves mainly ranging from ultraviolet waves to near infrared waves, and the transmission mode is convenient and safe.

Certain laser processing procedures, such as cutting, welding, drilling, cutting, etc., require the focusing of a laser beam to achieve high power densities; while other laser processes (e.g., heat treatment, coating, alloying, etc.) require uniform energy distribution within a particular shaped beam to achieve a large and uniform machined surface, in low power systems, lenses are often used for focusing or scattering, but in high power systems, metallic reflective, refractive systems are often used to avoid thermal lens effects. Some laser processing processes use beam-shifting processing methods, and mechanical transmission parts are added in the optical path system to enable the laser beam to move in a controlled manner.

In the existing infrared laser processing system, the light spot position needs to be detected in real time through the light spot detection device so as to ensure the light beam displacement precision, thereby ensuring the processing precision, but the existing infrared laser light spot position detection system can only realize the detection function on the light spot position, when the light spot position detection device is abnormal and influences the processing precision, the abnormal problem of equipment cannot be found in time, and a simple and effective detection result detection means is lacked so as to realize reliable light spot position detection and high-precision laser beam displacement control.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an infrared laser spot position detection system and method, which solve the problems that the existing infrared laser spot position detection system can only realize the detection function of the spot position, when the spot position detection device is abnormal and the processing precision is influenced, the equipment abnormity cannot be found in time, and a simple and effective detection result detection means is lacked to realize reliable spot position detection and high-precision laser beam displacement control.

(II) technical scheme

The invention specifically adopts the following technical scheme for realizing the purpose:

an infrared laser spot position detection system comprising:

a laser for emitting a laser beam;

a first beam splitter for reflecting a part of the laser beam and transmitting another part of the laser beam;

a second beam splitter for reflecting the laser beam reflected by the first beam splitter while transmitting a part of the laser beam;

the light spot position detection module is arranged on a laser transmission path of the second spectroscope and is used for detecting the position of the light spot of the laser beam transmitted by the second spectroscope;

a reflection mirror for reflecting a portion of the laser beam transmitted through the first beam splitter;

the third beam splitter is arranged at the intersection of the part of the laser beam path reflected by the reflecting mirror and the part of the laser beam path reflected by the second beam splitter, the part of the laser beam reflected by the reflecting mirror after being transmitted by the third beam splitter is overlapped with the part of the laser beam reflected by the second beam splitter to form a first composite laser beam, and the part of the laser beam reflected by the reflecting mirror after being reflected by the third beam splitter is overlapped with the part of the laser beam reflected by the second beam splitter to form a second composite laser beam;

the light spot position checking module is arranged on the laser transmission path of the third beam splitter and used for carrying out position detection on the first composite laser beam, and the detection result is used as a checking basis for the detection result of the light spot position detection module;

and the controller is respectively electrically connected with the laser, the light spot position detection module and the light spot position verification module, and is used for processing the light spot position electric signal output by the light spot position detection module and the light spot position electric signal output by the light spot position verification module and verifying the detection result of the light spot position detection module by taking the detection result of the light spot position verification module as a verification basis.

Furthermore, in order to ensure that the laser spot position detected by the spot position detection module is relatively consistent with the laser spot position detected by the spot position verification module, the first beam splitter, the second beam splitter, the reflection lens and the third beam splitter are arranged in a rectangular array.

Furthermore, in order to ensure the reliability of the light spot position detection, the light spot position detection module and the light spot position verification module adopt the same light spot position detector, and the mounting heights and the mounting structures of the light spot position detection module and the light spot position verification module are consistent.

Further, for making the staff in time discover unusual problem, infrared laser facula position detection system still includes the alarm module with controller electric connection, alarm module is used for reporting to the police when facula position detection module's testing result and facula position check module's testing result are inconsistent, shows that facula position detection module or facula position check module have unusual problem, adopts the mode of reporting to the police in time to remind staff's equipment to appear unusually.

An infrared laser spot position detection method is realized based on the infrared laser spot position detection system, and comprises the following steps:

s1, controlling the laser to emit laser beams through the controller;

s2, reflecting one part of the laser beam emitted by the laser to the second beam splitter through the first beam splitter, and transmitting the other part of the laser beam to the reflector through the first beam splitter;

s3, reflecting one part of the laser beam reflected to the second beam splitter to the third beam splitter, transmitting the other part of the laser beam to the light spot position detection module, controlling the light spot position detection module to detect the position of the light spot of the part of the laser beam through the controller, and sending the electric signal of the light spot position to the controller;

s4, reflecting the laser beam transmitted to the reflecting mirror onto a third beam splitter, overlapping a part of the laser beam reflected by the reflecting mirror after being transmitted by the third beam splitter and a part of the laser beam reflected by the second beam splitter into a first composite laser beam, controlling a light spot position verification module by a controller to detect the position of a light spot of the first composite laser beam, and sending a light spot position electric signal to the controller;

and S5, the controller processes the electric signal of the light spot position output by the light spot position detection module and the electric signal of the light spot position output by the light spot position verification module, and verifies the detection result of the light spot position detection module by taking the detection result of the light spot position verification module as a verification basis.

Further, when the detection result of the light spot position detection module is inconsistent with the detection result of the light spot position verification module, the controller sends an alarm instruction to the alarm module, and the alarm module gives an alarm.

(III) advantageous effects

Compared with the prior art, the invention provides an infrared laser spot position detection system and method, which have the following beneficial effects:

the invention combines the multi-spectroscope and the reflector which are arranged in a rectangular array to form the laser beam displacement detection system which has two light spot detection points and one laser beam light spot action point, and the light spot position detection module and the light spot position verification module which are oppositely arranged detect the light spot position at the same time, has the functions of detection and verification, realizes high-precision laser beam displacement control by taking high-reliability light spot position detection means as a dependence, and has simple and effective system detection structure and detection method and higher economic benefit and popularization value.

Drawings

FIG. 1 is a schematic diagram of a simple structure for detecting the position of an infrared laser spot according to the present invention;

FIG. 2 is a schematic block diagram of an infrared laser spot position detection system of the present invention.

In the figure: 1. a laser; 2. a first beam splitter; 3. a second spectroscope; 4. a light spot position detection module; 5. a mirror plate; 6. a third beam splitter; 7. a light spot position checking module; 8. a controller; 9. and an alarm module.

Detailed Description

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

Examples

As shown in fig. 1-2, an infrared laser spot position detection system according to an embodiment of the present invention includes:

the laser 1 is controlled by the controller 8 to emit laser beams, and the controller 8 receives an instruction of an upper computer to control the laser 1;

a first beam splitter 2 disposed in the laser emission direction of the laser 1, and mainly configured to reflect and transmit the laser beam emitted by the laser 1, and divide the laser beam emitted by the laser 1 into two parts;

the second beam splitter 3 is arranged in the laser emission direction of the first beam splitter 2, receives part of the laser beams reflected by the first beam splitter 2, reflects the part of the laser beams, transmits part of the laser beams in the part of the laser beams, and continuously divides the part of the laser beams reflected by the first beam splitter 2 into two parts;

the light spot position detection module 4 is arranged on the laser transmission path of the second spectroscope 3 and is used for detecting the position of the light spot of the laser beam transmitted by the second spectroscope 3;

a reflection mirror 5 for reflecting a part of the laser beam transmitted through the first beam splitter 2;

the third beam splitter 6 is arranged at the intersection of the part of the laser beam path reflected by the reflecting mirror 5 and the part of the laser beam path reflected by the second beam splitter 3, the part of the laser beam reflected by the reflecting mirror 5 after being transmitted by the third beam splitter 6 and the part of the laser beam reflected by the second beam splitter 3 after being reflected by the third beam splitter 6 are overlapped to form a first composite laser beam, the first composite laser beam is radially consistent with the laser beam transmitted by the second beam splitter 3 to form two parallel laser beams, and the part of the laser beam reflected by the reflecting mirror 5 after being reflected by the third beam splitter 6 and the part of the laser beam reflected by the second beam splitter 3 are overlapped to form a second composite laser beam;

the light spot position checking module 7 is arranged on the laser transmission path of the third beam splitter 6 and used for carrying out position detection on the first composite laser beam, and the detection result is used as a checking basis for the detection result of the light spot position detection module 4;

and the controller 8 is electrically connected with the laser 1, the light spot position detection module 4 and the light spot position verification module 7 respectively, and is used for processing the light spot position electric signal output by the light spot position detection module 4 and the light spot position electric signal output by the light spot position verification module 7 and verifying the detection result of the light spot position detection module 4 by taking the detection result of the light spot position verification module 7 as a verification basis.

As shown in fig. 1, in some embodiments, the first spectroscope 2, the second spectroscope 3, the reflection lens 5 and the third spectroscope 6 are arranged in a rectangular array, a multi-spectroscope and a reflection lens arranged in a rectangular array are combined to form a laser beam spot action point and two spot detection points, and a spot position detection module 4 and a spot position verification module 7 are arranged to detect and verify the spot position, so that the processing precision of the laser processing system is ensured, the spot position can be detected in real time, the detection system is monitored in real time, and the reliability of the operation of the system is ensured.

In some embodiments, the light spot position detection module 4 and the light spot position verification module 7 employ the same type of light spot position detector, the mounting heights and mounting structures of the light spot position detection module 4 and the light spot position verification module 7 are the same, the same type of two light spot position detectors are arranged to form a laser processing system having the light spot detection function and the verification function, and the detection precision is ensured to the maximum extent under the condition that the mounting heights and mounting structures of the light spot position detection module 4 and the light spot position verification module 7 are the same.

As shown in fig. 2, in some embodiments, the infrared laser spot position detecting system further includes an alarm module 9 electrically connected to the controller 8, where the alarm module 9 is configured to alarm when the detection result of the spot position detecting module 4 is inconsistent with the detection result of the spot position verifying module 7.

An infrared laser spot position detection method is realized based on the infrared laser spot position detection system, and comprises the following steps:

s1, controlling the laser 1 to emit laser beams through the controller 8;

s2, a part of the laser beam emitted from the laser 1 is reflected by the first beam splitter 2 onto the second beam splitter 3, and another part of the laser beam is transmitted by the first beam splitter 2 onto the reflective mirror 5;

s3, reflecting one part of the laser beam reflected to the second beam splitter 3 to the third beam splitter 6, transmitting the other part of the laser beam to the light spot position detection module 4, controlling the light spot position detection module 4 to detect the position of the light spot of the part of the laser beam through the controller 8, and sending a light spot position electric signal to the controller 8;

s4, reflecting the laser beam transmitted to the reflector 5 onto the third beam splitter 6, overlapping a part of the laser beam reflected by the reflector 5 after being transmitted by the third beam splitter 6 and a part of the laser beam reflected by the second beam splitter 3 after being reflected by the third beam splitter 6 into a first composite laser beam, controlling the light spot position verification module 7 through the controller 8 to detect the position of the light spot of the first composite laser beam, and sending the electric signal of the light spot position to the controller 8;

s5, the controller 8 processes the electrical signal of the light spot position output by the light spot position detection module 4 and the electrical signal of the light spot position output by the light spot position verification module 7, and verifies the detection result of the light spot position detection module 4 by using the detection result of the light spot position verification module 7 as a verification criterion.

In some embodiments, when the detection result of the light spot position detection module 4 is inconsistent with the detection result of the light spot position verification module 7, the controller 8 sends an alarm instruction to the alarm module 9, and the alarm module 9 gives an alarm.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.