Laser aging detection device

Abstract

The utility model relates to an aging detection device for a laser. The aging detection device comprises an acquisition assembly, a detection assembly and a control assembly, the acquisition assembly comprises at least two groups of light receiving boxes which are arranged along a first direction, the light receiving boxes are arranged opposite to output heads of the lasers in a second direction, the second direction is perpendicular to the first direction, and each light receiving box is further provided with a detection window; the detection assembly comprises a detector and a driving part; the driving piece drives the detector to move in the first direction, the detector is configured to be arranged to be right opposite to the detection window of the light receiving box in the third direction during detection, and the third direction is perpendicular to the plane where the first direction and the second direction are located; the control assembly comprises a PLC, and the PLC is connected with the detection assembly and used for controlling a power source of the laser. According to the utility model, the aging detection of lasers can be realized in batches through automatic line patrol, the positions of abnormal lasers can be timely and accurately displayed, and power-off protection can be carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of lasers, in particular to a laser aging detection device. Background Art

[0002] With the increase of service time or the accumulation of working intensity, lasers may age due to reasons such as optical attenuation, material aging, or pump power attenuation. Laser aging will directly affect the quality and output power of the emitted laser. Therefore, it is very necessary to conduct laser aging detection in a timely manner.

[0003] Currently, for laser failures, internal photodiodes are often used for detection and alarm, but this method has a risk of misjudgment. Especially when the laser burns out or has other abnormalities, power-off protection cannot be achieved in a timely manner; when lasers age in batches, the existing detection devices cannot locate the fault positions in a timely manner, and external devices need to be added to cooperate with the detection to achieve the protection function, and the control and use are relatively complex; in addition, in the existing technology, manual inspection is also used to check whether the light output is abnormal, which has disadvantages such as long cycle, untimely response, and high cost. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the present utility model is to overcome the technical difficulty that there is a lack of timely and efficient detection equipment and protection equipment for abnormal light output or batch failures during laser aging in the prior art, and to provide a laser aging detection device that can locate faults in a timely manner and achieve power-off protection, thereby improving the safety performance.

[0005] To solve the above technical problem, the present utility model provides a laser aging detection device, which includes,

[0006] A collection component, the collection component includes a light receiving box, the light receiving box has at least two groups and is arranged along a first direction, the light receiving box is arranged opposite to the output head of the laser in a second direction, and the second direction is perpendicular to the first direction; the light receiving box also has a detection window;

[0007] A detection component, the detection component includes a detector and a driving member; the driving member drives the detector to move along the first direction, and the detector is configured to be arranged opposite to the detection window of the light receiving box in a third direction when detecting, and the third direction is perpendicular to the plane where the first direction and the second direction are located;

[0008] A control component, the control component includes a PLC, the PLC is connected to the detection component and is used to control the power supply of the laser.

[0009] In one embodiment of the present utility model, the light receiving box is provided corresponding to each laser one by one, and the distance between the output head of each group of lasers and the corresponding light receiving box in the second direction is equal.

[0010] In one embodiment of the present utility model, the detection window is set as a light passing hole on the top surface of the light receiving box, and the apertures of the light passing holes of each group of light receiving boxes are the same.

[0011] In one embodiment of the present utility model, the detector is set as a photosensitive coupling component, an infrared thermal imager or a phototransistor.

[0012] In one embodiment of the present utility model, the driving member includes a slide rail and a driving motor; the detector is fixed on the slide rail, the slide rail extends along the first direction, and slide rail brackets are further arranged at both ends of the extending direction of the slide rail; the driving motor is used to drive the detector to reciprocate between the slide rail brackets along the slide rail.

[0013] In one embodiment of the present utility model, the control component further includes a motor driver, the PLC is connected to the motor driver, and the execution end of the motor driver is connected to the driving motor.

[0014] In one embodiment of the present utility model, the control component further includes a signal line, the first end of the signal line is connected to the PLC, and the second end of the signal line is respectively connected to the AC relays of each group of lasers, and the AC relays are used to control the power supply.

[0015] In one embodiment of the present utility model, an indicator light is further included, the indicator lights are provided corresponding to each laser one by one, and the indicator lights are configured to be installed at the positions of the corresponding lasers, and the indicator lights are all connected to the second end of the signal line.

[0016] In one embodiment of the present utility model, the control component further includes a signal collector; the PLC is connected to the detector through the signal collector.

[0017] In one embodiment of the present utility model, the control component further includes a host computer, and the host computer is connected to the PLC.

[0018] The above technical solution of the present utility model has the following beneficial effects compared with the prior art:

[0019] A laser aging detection device according to the present utility model is provided with automatic line tracking, which can batch detect the aging of lasers, timely and accurately display the positions of abnormal lasers, and perform power-off protection. Compared with the internal photodiode detection of lasers, it can avoid the interference of stray light factors and give an alarm. Compared with manual inspection, the response time and detection period are shorter, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present utility model easier to be clearly understood, the following further details the present utility model according to the specific embodiments of the present utility model in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a schematic diagram when the laser aging detection device in the preferred embodiment of the present utility model is used in cooperation with a laser.

[0022] Explanation of the reference numerals in the drawings: 1. Laser; 11. Output head; 12. AC-DC power supply; 13. AC relay; 2. Light receiving box; 3. Detector; 41. Slide rail; 42. Slide rail bracket; 43. Driving motor; 5. PLC; 61. Motor driver; 62. Signal collector; 63. Signal line; 64. Indicator light; 7. Host computer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further illustrates the present utility model in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it, but the embodiments given are not intended to limit the present utility model.

[0024] Embodiment 1

[0025] Referring to Figure 1 As shown, Embodiment 1 of the present utility model provides a laser aging detection device, which is used to detect the fault conditions of lasers during batch operation, and realizes the functions of instant fault detection, fault location and power-off protection. Compared with the manual inspection method, the detection frequency is higher, the response time and detection period are shorter, the cost is lower, and it can avoid the long-term work of staff in high-temperature environments in summer. Compared with the internal photodiode detection method of lasers, it is less affected by stray light interference, has higher detection accuracy, and can give an alarm feedback in time, with better system integration and safety performance.

[0026] Specifically, referring to Figure 1As shown, the laser aging detection device includes a collection component, a detection component, and a control component; the laser aging detection device is used to achieve batch detection of lasers. The collection component is used to batch-collect the laser beams emitted by the laser 1. The detection component is used to detect the optical signals collected by the collection component. The control component is connected to the detection component to judge the operating condition of the laser 1 and perform power-off protection or alarm according to the operating condition.

[0027] Specifically, referring to Figure 1 As shown, the laser 1 includes an output head 11, which is used to output laser. When the collection component collects optical signals, the output head 11 is configured to be arranged in a first direction. The collection component includes a light receiving box 2, and the light receiving box 2 is used to receive laser and provide a suitable optical signal to the outside. A detection window is provided on the surface of the light receiving box 2, and the detection window is used to provide the optical signal to the detection component. When performing batch detection, the light receiving box 2 has at least two groups. Preferably, the number of the light receiving boxes 2 is set in one-to-one correspondence with the lasers 1. The light receiving boxes 2 are arranged in the first direction. The light receiving box 2 is disposed opposite to the output head 11 of the laser 1 in a second direction, and the second direction is perpendicular to the first direction.

[0028] Further, referring to Figure 1 As shown, in a preferred embodiment of the present invention, the distances between the output heads 11 of each group of lasers 1 and the corresponding light receiving boxes 2 in the second direction are equal; when the laser 1 is operating normally, the signal intensities received by the light receiving boxes 2 are controlled to be consistent. In a preferred embodiment of the present invention, the detection window is set as a light passing hole on the top surface of the light receiving box 2, and the apertures of the light passing holes of each group of light receiving boxes 2 are the same, which is convenient for improving the inspection accuracy of the detection component and reducing the misjudgment rate.

[0029] Specifically, referring to Figure 1 As shown, the detection component includes a detector 3 and a driving member; the driving member drives the detector 3 to move along the first direction. When the detector 3 is configured to perform detection, it is disposed opposite to the detection window of the light receiving box 2 in a third direction, and the third direction is perpendicular to the plane where the first direction and the second direction are located; preferably, the first direction is set as the X direction, the second direction is set as the Y direction, and the third direction is set as the Z direction.

[0030] Further, the detector 3 is set as a charge coupled device (CCD), an infrared thermal imager or a phototransistor. Preferably, the detector 3 is set as a charge coupled device (CCD). The detector 3 collects the light spot and converts the optical signal into an electrical signal, and the electrical signal is transmitted to the control component to obtain a detection result. In some embodiments, the detector 3 can also be set as other components to realize the conversion between optical and electrical signals.

[0031] Further, referring to Figure 1 as shown in the figure, the driving member includes a slide rail 41 and a driving motor 43; the detector 3 is fixed on the slide rail 41. The slide rail 41 extends along the first direction, and slide rail brackets 42 are further arranged at both ends of the extending direction of the slide rail 41. The slide rail brackets 42 are used to support and fix the slide rail 41, so that the slide rail 41 is arranged opposite to the light passing hole; the driving motor 43 is used to drive the detector 3 to reciprocate between the slide rail brackets 42 along the slide rail 41.

[0032] Specifically, referring to Figure 1 as shown in the figure, the control component includes a programmable logic controller (PLC) 5, a motor driver 61, a signal collector 62, a signal line 63 and a host computer 7; the PLC 5 is connected to the detection component and is used to control the connection or disconnection state between the laser 1 and the power supply; among them, the PLC 5 is connected to the driving motor 43 through the motor driver 61; the PLC 5 is connected to the detector 3 through the signal collector 62.

[0033] Subsequently, the PLC 5 controls the motor driver 61 according to the set instruction. The execution end of the motor driver 61 is connected to the driving motor 43, so as to control the detector 3 to move to the upper part of the light passing hole of the light receiving box 2 to be detected. After the detector 3 detects the laser and performs signal conversion, the electrical signal is transmitted to the PLC 5 through the signal collector 62, and the PLC 5 judges whether the laser 1 has a fault and controls whether to turn off the laser power supply according to the judgment result.

[0034] Further, at present, the detection of laser faults lacks the record of the aging fault time, which is inconvenient to master and count the laser aging cycle; in the preferred embodiment of the present invention, the host computer 7 is connected to the PLC 5, and the host computer 7 is used to operate the aging system and record information such as the fault time for statistical analysis.

[0035] Further, the first end of the signal line 63 is connected to the PLC 5, and the second end of the signal line 63 is respectively connected to the AC relays 13 and the indicator lights 64 of each group of the lasers 1 for power cut-off and fault alarm. The AC relay 13 turns on or off the alternating current according to the signal sent by the PLC 5 through the signal line 63; the AC-DC power supply 12 of the laser 1 converts the alternating current of the AC relay 13 into direct current to supply power for the laser 1 to work. When the AC relay 13 turns off the alternating current according to the fault signal, the secondary power cut-off and protection function of the laser is realized.

[0036] Further, the indicator lights 64 are arranged in one-to-one correspondence with the lasers 1, and the indicator lights 64 are configured to be installed at the positions of the corresponding lasers 1, and the indicator lights 64 are all connected to the second end of the signal line 63; when the signal line 63 transmits a fault signal, the indicator lights 64 light up to give an alarm, facilitating the staff to quickly locate the working points of the lasers with aging anomalies according to the alarm prompt. When the lasers are batch-detected, the PLC 5 is connected to the AC relay 13 and the indicator lights 64 in a one-to-many cooperation manner.

[0037] Embodiment 2

[0038] Embodiment 2 of the present utility model provides a laser aging detection device. The laser 1 can be set as various types of lasers capable of emitting pulsed laser or continuous laser; when the lasers 1 need to be batch-detected simultaneously, the signal line 63, the motor driver 61, and the signal collector 62 of the acquisition component, the detection component, and the control component can be set as multiple groups to carry out detection corresponding to multiple groups of laser modules, realizing modular operation and management, and adjusting the number of enabled modules according to the actual number of aging lasers, reducing the waste of electricity and site.

[0039] The working principle of the laser aging detection device of the present utility model is as follows:

[0040] The lasers 1 are arranged and placed. After power-on, the light receiving box 2 collects the optical signals; the PLC 5 controls the driving motor 43 through the motor driver 61, and then controls the detector 3 to perform fixed-point inspection at a set speed and cycle value. The detector 3 converts the optical signals in the light passing hole into electrical signals, which are feedback to the PLC 5 after being optimized and processed by the signal collector 62; when the detector 3 detects abnormal conditions such as the laser 1 not emitting light, the abnormal signal is transmitted to the AC relay 13 through the PLC 5 and the signal line 63 to cut off the AC-DC power supply 12 at the abnormal point, and at the same time the indicator light 64 lights up to give an alarm; during this period, the upper computer 7 records the abnormal time period and automatically times. After the abnormal laser is removed or the fault is repaired, the control component resets the signal, and this point continues to participate in aging detection and protection.

[0041] It should be further noted in the embodiments of the present utility model that: This device is composed of the specific hardware structures of the acquisition component, the detection component, and the control component. Some hardware involves software programs during operation, and the software programs for auxiliary operation are all existing and replicable software programs, which do not constitute the innovation points of this application.

[0042] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A laser aging detection device, characterized in that: include, A collection component, the collection component includes a light receiving box, the light receiving box has at least two groups and is arranged along a first direction, the light receiving box and the output head of the laser are arranged opposite to each other in a second direction, and the second direction is perpendicular to the first direction; the light receiving box also has a detection window; A detection component, the detection component comprising a detector and a driving member; The driving member drives the detector to move along the first direction, and the detector is configured to be arranged opposite to the detection window of the light receiving box in a third direction during detection, and the third direction is perpendicular to the plane where the first direction and the second direction are located; A control component, wherein the control component comprises a PLC, wherein the PLC is connected to the detection component and is used to control the power supply of the laser.

2. The laser aging detection device according to claim 1, characterized in that: The light receiving boxes are arranged in one-to-one correspondence with the lasers, and the distance between the output heads of each group of the lasers and the corresponding light receiving boxes in the second direction is equal.

3. The laser aging detection device according to claim 1, characterized in that: The detection window is configured as a light-through hole on the top surface of the light-receiving box, and the apertures of the light-through holes of each group of the light-receiving boxes are consistent.

4. The laser aging detection device according to claim 1, characterized in that: The detector is configured as a photosensitive coupling assembly, an infrared thermal imager or a phototransistor.

5. The laser aging detection device according to claim 1, characterized in that: The driving member includes a slide rail and a driving motor; the detector is fixed to the slide rail, the slide rail extends along the first direction, and slide rail brackets are also provided at both ends of the extension direction of the slide rail; the driving motor is used to drive the detector to reciprocate along the slide rail and between the slide rail brackets.

6. The laser aging detection device according to claim 5, characterized in that: The control component also includes a motor driver, the PLC is connected to the motor driver, and the execution end of the motor driver is connected to the drive motor.

7. The laser aging detection device according to claim 1, characterized in that: The control component also includes a signal line, a first end of the signal line is connected to the PLC, and a second end of the signal line is respectively connected to an AC relay of each group of the lasers, and the AC relay is used to control the power supply.

8. The laser aging detection device according to claim 7, characterized in that: It also includes indicator lights, which are arranged in one-to-one correspondence with the lasers and are configured to be installed at the positions of the corresponding lasers, and the indicator lights are all connected to the second ends of the signal lines.

9. The laser aging detection device according to claim 1, characterized in that: The control component also includes a signal collector; the PLC is connected to the detector via the signal collector.

10. The laser aging detection device according to claim 1, characterized in that: The control component also includes a host computer, and the host computer is connected to the PLC.

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