Semiconductor laser driving power supply system

Abstract

The application discloses a kind of semiconductor laser drive power supply systems of semiconductor laser drive technical field, including single-chip microcomputer control module, the transmission port of single-chip microcomputer control module is electrically connected with industrial computer, the power interface of industrial computer is electrically connected with second power module, second power module is provided with second power switch module on line, the power interface of industrial computer is electrically connected with first power module, first power module is provided with first power switch module on line, the transmission port of single-chip microcomputer control module is electrically connected with LD drive module, the power interface of LD drive module is electrically connected with first power module, the power interface of industrial computer is electrically connected with first power module, the output port of single-chip microcomputer control module is electrically connected with cooling fan, the present system uses modular design to facilitate subsequent maintenance, while reducing cost, when modifying parameter to laser, system power supply does not need to be started, to avoid laser misoperation.

Description

TECHNICAL FIELD

[0001] The application discloses a semiconductor laser driving power supply system, and particularly relates to the technical field of semiconductor laser driving. BACKGROUND

[0002] With the rapid development of science and technology, semiconductor laser technology has been applied in various fields of national economy and national defense construction. Semiconductor lasers have characteristics that other lasers cannot match, for example, a common laser such as a He-Ne laser adopts high-voltage excitation (about 1500V), while a semiconductor laser adopts low-voltage excitation of 3-5V. In comparison, the semiconductor laser has a safer excitation mode and is tens of times more efficient than ordinary lasers. In some measuring instruments, the semiconductor laser is selected for illumination, which can meet the requirements of good monochromaticity, good coherence, beam collimation, high precision and the like, and has wide application in long-distance communication, laser radar, digital signal storage and recovery, laser ranging, robots, holographic applications, medical diagnosis and the like. However, the semiconductor laser has strict requirements on working conditions, and under inappropriate working or storage conditions, the performance of the semiconductor laser can be rapidly deteriorated or even failed. Therefore, a laser driving power supply that enables the laser to work normally is particularly important. Thus, the performance of the laser driver has high requirements in practical application. The semiconductor laser (LD) has the advantages of small size, light weight, high conversion efficiency and long service life, and has been widely applied in the fields of industry, military and medical treatment. The LD is a laser that uses current injection as an excitation mode, and the service life and working characteristics of the LD depend on the performance of the driving power supply to a great extent. The nature of the semiconductor laser determines that the semiconductor laser has poor surge impact resistance, which requires that the driving power supply has high stability and small surge impact. Therefore, various protection circuits are needed in the driving power supply to meet the actual requirements. Slow start circuits, TVS (transient voltage suppressor) absorption circuits and current limiting circuits are usually used to prevent surge impact and excessive current. However, the working current of a high-power semiconductor laser is large, and the semiconductor laser is relatively fragile, and the traditional slow start circuit and TVS absorption circuit cannot well meet the actual requirements.

[0003] The existing semiconductor laser mostly adopts a group of power supply modules when being driven, and when the parameters of the laser need to be modified, the laser power supply must be started, and the laser switch must be disconnected, so that the safety factor is low and the operation is complex. SUMMARY

[0004] The application aims to provide a semiconductor laser driving power supply system to solve the problems in the background art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a semiconductor laser driving power supply system, comprising a single-chip microcomputer control module, a transmission port of the single-chip microcomputer control module is electrically connected with an industrial computer, a power supply interface of the industrial computer is electrically connected with a second power supply module, a second power supply switch module is arranged on a line of the second power supply module, the power supply interface of the industrial computer is electrically connected with a first power supply module, a first power supply switch module is arranged on a line of the first power supply module, a transmission port of the single-chip microcomputer control module is electrically connected with an LD driving module, a power supply interface of the LD driving module is electrically connected with the first power supply module, the power supply interface of the industrial computer is electrically connected with the first power supply module, an output port of the single-chip microcomputer control module is electrically connected with a cooling fan, an input port of the single-chip microcomputer control module is electrically connected with a sensor module, and an input port of the single-chip microcomputer control module is electrically connected with an operation control module.

[0006] Preferably, the sensor module is composed of a temperature sensor, a current sensor and a power sensor.

[0007] Preferably, the operation control module is composed of a foot switch module and a standby switch module.

[0008] Preferably, the first power supply module and the second power supply module are connected in parallel.

[0009] Preferably, a diode isolation circuit is arranged on an output circuit of the first power supply module and the second power supply module.

[0010] Compared with the prior art, the present application has the following beneficial effects:

[0011] 1) The present system is composed of a power supply module, a single-chip microcomputer control module, an LD driving module, an industrial computer and a sensor module, and the modular design facilitates subsequent maintenance and reduces cost.

[0012] 2) The present system is provided with a first power supply module and a second power supply module, only the second power supply module is started, only the single-chip microcomputer control module and the industrial computer are started, at this time, system parameters can be set, modified and saved, only the first power supply module is started, the whole system works, the present system adopts the modular design, which facilitates subsequent maintenance and reduces cost, and when parameters of the laser are modified, the system power supply does not need to be started, thereby avoiding laser misoperation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure block diagram of the semiconductor laser driving power supply system of the present application;

[0014] Figure 2 It is a structure block diagram of the sensor module system of the semiconductor laser driving power supply system of the present application;

[0015] Figure 3 The semiconductor laser driving power supply system operation control module structure block diagram of the present application.

[0016] In the figure: 100 single-chip microcomputer control module, 110 industrial computer, 200 second power module, 210 second power switch module, 300 first power module, 310 first power switch module, 400 LD driving module, 410 cooling fan, 500 sensor module, 510 temperature sensor, 520 current sensor, 530 power sensor, 600 operation control module, 610 foot switch module, 620 standby switch module. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0018] The present application provides a semiconductor laser driving power supply system, which adopts modular design to facilitate subsequent maintenance and reduce cost. When the parameters of the laser are modified, the system power supply does not need to be started, thereby avoiding laser misoperation. Please refer to Figure 1 , which comprises a single-chip microcomputer control module 100. The transmission port of the single-chip microcomputer control module 100 is electrically connected with an industrial computer 110. The single-chip microcomputer control module 100 is used to execute the laser mode required to be output by the industrial computer 110, and simultaneously upload the set current, power and working temperature of the laser to the industrial computer 110 in real time, so as to ensure that the output laser is stable and reliable.

[0019] Please refer to Figure 1 again. The power supply interface of the industrial computer 110 is electrically connected with a second power module 200. The second power module 200 is provided with a second power switch module 210 on the line. The second power module 200 is used to supply power to the industrial computer 110 and the single-chip microcomputer control module 100. The second power module 210 is used to open and close the second power module 200. The second power switch module 210 adopts a key switch.

[0020] Please refer to Figure 1 again. The power supply interface of the industrial computer 110 is electrically connected with a first power module 300. The first power module 300 is provided with a first power switch module 310 on the line. The first power module 300 is used to supply power to the entire system. The first power switch module 310 is used to open and close the first power module 300. The first power switch module 310 adopts a key switch.

[0021] Please refer to Figure 1The transmission port of the single-chip microcomputer control module 100 is electrically connected with an LD driving module 400, the power supply interface of the LD driving module 400 is electrically connected with the first power supply module 300, the power supply interface of the industrial computer 110 is electrically connected with the first power supply module 300, and the output port of the single-chip microcomputer control module 100 is electrically connected with a cooling fan 410; the LD driving module 400 is used for driving the laser, and the cooling fan 410 is used for cooling the high-power device of the driving power supply;

[0022] Please refer to Figure 1 and Figure 2 The input port of the single-chip microcomputer control module 100 is electrically connected with a sensor module 500, the sensor module 500 is composed of a temperature sensor 510, a current sensor 520 and a power sensor 530, and the temperature sensor 510, the current sensor 520 and the power sensor 530 transmit the temperature, current and power consumption of the laser to the industrial computer 110 in real time through the single-chip microcomputer control module 100;

[0023] Please refer to Figure 1 and Figure 2 The input port of the single-chip microcomputer control module 100 is electrically connected with an operation control module 600, the operation control module 600 is composed of a foot switch module 610 and a standby switching module 620, the laser is emitted when the foot switch is stepped down during the standby, the laser is not emitted when the foot switch is stepped down during the standby, and the laser parameters can be configured at this time.

[0024] Although the present application has been described with reference to some embodiments above, various modifications can be made thereto without departing from the scope of the present application, and equivalent replacements can be made to the components therein. In particular, as long as there is no structural conflict, each feature in each embodiment disclosed in the present application can be combined with each other in any manner, and the description of these combinations is not exhaustively described in the present specification only for the consideration of omitting the length and saving the resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all the technical solutions falling within the scope of the claims.

Claims

1. A semiconductor laser driving power supply system, which initiates operation at the time of laser parameter modification, characterized by: Including single-chip microcomputer control module (100), the transmission port of single-chip microcomputer control module (100) is electrically connected with industrial computer (110), and single-chip microcomputer control module (100) is used to execute the laser mode required by industrial computer (110) output, and simultaneously upload the setting current, power, working temperature and the like of laser to industrial computer (110) in real time, to ensure that the output laser is stable and reliable; The power interface of industrial computer (110) is electrically connected with second power module (200), and second power switch module (210) is arranged on the line of second power module (200);Second power module (200) is used to power industrial computer (110) and single-chip microcomputer control module (100), and second power switch module (210) is used for opening and closing of second power module (200), and second power switch module (210) adopts key switch; The power interface of industrial computer (110) is electrically connected with first power module (300), and first power switch module (310) is arranged on the line of first power module (300);First power module (300) is used to power the whole system, and first power switch module (310) is used for opening and closing of first power module (300), and first power switch module (310) adopts key switch; Only start second power module, only start single-chip microcomputer control module and industrial computer, at this time, system parameters are set, modified and saved; Only start first power module, the whole system works; The transmission port of single-chip microcomputer control module (100) is electrically connected with LD drive module (400), the power interface of LD drive module (400) is electrically connected with first power module (300), the power interface of industrial computer (110) is electrically connected with first power module (300), the output port of single-chip microcomputer control module (100) is electrically connected with cooling fan (410), the input port of single-chip microcomputer control module (100) is electrically connected with sensor module (500), and the input port of single-chip microcomputer control module (100) is electrically connected with operation control module (600);The operation control module (600) is composed of foot switch module (610) and standby switch module (620), and the laser is emitted when the foot switch is stepped in standby, and no laser is emitted when the foot switch is stepped in standby, at this time, laser parameters can be configured; LD drive module (400) is used for driving laser, and cooling fan (410) is used for cooling high-power devices of driving power supply.

2. The semiconductor laser driving power supply system according to claim 1, wherein: The sensor module (500) is composed of temperature sensor (510), current sensor (520) and power sensor (530).

3. The semiconductor laser driving power supply system according to claim 1, wherein: The first power module (300) and the second power module (200) are connected in parallel.

4. The semiconductor laser driving power supply system according to claim 1, wherein: Diode isolation circuit is arranged on the output circuit of first power module (300) and second power module (200).

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