Control method and control system of heating type laser

Abstract

The invention provides a control method and a control system of a heating type laser, and the method comprises the steps: building a laser working temperature relation model in advance, and configuring corresponding laser turn-off time t1 and laser turn-on time t0 in advance; acquiring an external environment temperature parameter xi detected by a thermistor I in real time, and determining a temperature difference parameter corresponding to the heating type laser according to the external environment temperature parameter xi and the laser working temperature relation model; determining a real-time target working temperature parameter of the heating type laser based on a temperature difference parameter and the external environment temperature parameter xi; and controlling a heating type laser based on the real-time target working temperature parameter and pre-configured laser turn-off time t1 and laser turn-on time t0, so that the position of the absorption pit meets a preset condition, and the detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of laser gas sensing technology, and in particular, to a control method and control system for heating lasers. Background Art

[0002] In recent years, laser gas sensing technology has become a hot topic in the field of gas detection. Compared with traditional non-laser sensing technology, laser gas detection methods have the advantages of high sensitivity, high detection accuracy, good stability in use, not susceptible to external interference, and good environmental adaptability. Tunable Diode Laser Absorption Spectroscopy (TDLAS) is one of the most commonly used methods in laser gas sensing technology. It uses a tunable semiconductor laser to accurately measure the absorption spectrum of gas molecules to invert the concentration of the gas to be measured. The main components of the TDLAS system include tunable semiconductor lasers, laser controllers, beam splitters, gas chambers, photodetectors, and computers. Among them, tunable semiconductor lasers, reference gas chambers, and reference detectors are the key components of the TDLAS system, accounting for the main cost of the system. In order to reduce the cost of the TDLAS system, it is very necessary to design a TDLAS system without a reference gas chamber and a reference detector based on a heated laser.

[0003] It should be noted that in the TDLAS system, the position of the absorption pit is not only an important sign for identifying the type of gas, but also an important basis for measuring the gas concentration. By accurately measuring and analyzing the position and depth information of the absorption pit, high-sensitivity and high-accuracy detection of the gas can be achieved. The current common laser gas detection method is to adjust the absorption pit of the main path signal to a fixed position in real time by demodulating the absorption pit position of the reference detector signal after passing through the reference gas chamber. However, the TDLAS system based on a heating laser without a reference gas chamber and a reference detector cannot adjust the absorption pit position according to the reference detector signal after the reference gas chamber. Therefore, how to quickly and accurately control the heating laser without a reference gas chamber and a reference detector, and adjust the absorption pit position at the same time, has become a technical problem that needs to be solved urgently.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0005] Based on this, it is necessary to provide a control method and control system for a heating laser to address the above technical problems. The heating laser is controlled based on the real-time target operating temperature parameters and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions and the heating laser is controlled quickly and accurately.

[0006] In order to achieve the above-mentioned object, the first aspect of the present invention provides a control method for a heating type laser, the method comprising: pre-constructing a laser operating temperature relationship model, and pre-configuring the corresponding laser off time t1 and laser on time t0; wherein the laser operating temperature relationship model is expressed as Δ AD =a1×x-a2,Δ AD It represents the temperature difference parameter corresponding to the heating laser, x represents the external ambient temperature parameter reflected by the thermistor I, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient;

[0007] Obtain the external ambient temperature parameter x detected by the thermistor I in real time i , according to the external environment temperature parameter x i With the laser working temperature relationship model, determine the temperature difference parameter Δ corresponding to the heating laser i ; Wherein, the temperature difference parameter Δ i It refers to the difference between the external ambient temperature parameter of the thermistor I and the laser target operating temperature parameter;

[0008] Based on the temperature difference parameter Δ i and the external environment temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein, wherein the real-time target operating temperature parameter = the external ambient temperature parameter x i - The temperature difference parameter Δ i ;

[0009] The heating laser is controlled based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

[0010] In order to achieve the above-mentioned object, the second aspect of the present invention provides a control system for a heating type laser, which includes a configuration module, a real-time temperature difference determination module, a real-time target operating temperature determination module and a control module, wherein:

[0011] The configuration module is used to pre-build a laser operating temperature relationship model and pre-configure the corresponding laser off time t1 and laser on time t0; wherein the laser operating temperature relationship model is expressed as Δ AD=a1×x-a2,Δ AD It represents the temperature difference parameter corresponding to the heating laser, x represents the external ambient temperature parameter reflected by the thermistor I, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient;

[0012] The real-time temperature difference determination module is used to obtain the external ambient temperature parameter x detected by the thermistor I in real time i , according to the external environment temperature parameter x i With the laser working temperature relationship model, determine the temperature difference parameter Δ corresponding to the heating laser i ; Wherein, the temperature difference parameter Δ i It refers to the difference between the external ambient temperature parameter of the thermistor I and the laser target operating temperature parameter;

[0013] The real-time target operating temperature determination module is used to determine the temperature difference parameter Δ i and the external environment temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein the real-time target operating temperature parameter = the external ambient temperature parameter x i - The temperature difference parameter Δ i ;

[0014] The control module is used to control the heating laser based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

[0015] In order to achieve the above-mentioned purpose, the third aspect of the present invention provides a computer device, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; the memory is used to store computer programs; the processor is used to implement the control method of the heating laser as described above when executing the program stored in the memory.

[0016] In order to achieve the above-mentioned object, the fourth aspect of the present invention provides a readable storage medium having instructions stored thereon, which, when executed by one or more processors, enables the processors to execute the control method of the heating laser as described above.

[0017] The beneficial effects of the present invention are:

[0018] The present invention controls the heating type laser by pre-building a laser operating temperature relationship model and pre-configuring the laser off time t1 and the laser on time t0 corresponding to the laser operating temperature relationship model; the present invention first controls the heating type laser according to the external environment temperature parameter x iThe corresponding temperature difference parameter Δ is determined by the laser operating temperature relationship model i , and then based on the temperature difference parameter Δ i and the external environment temperature parameter x i Determine the real-time target operating temperature parameters; the present invention also pre-configures the laser off time t1, the laser on time t0 and the corresponding driving waveform, and makes the position where the absorption pit appears in the t0 segment waveform be in the middle position;

[0019] Therefore, in the absence of a reference gas chamber and a reference detector, the present invention achieves the effect of adjusting the absorption pit position at the same time by dynamically adjusting the working temperature of the heating laser, thereby quickly and accurately controlling the heating laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow diagram of the control method of the heating laser of the present invention;

[0021] Figure 2 It is a structural diagram of the control system of the heating laser of the present invention;

[0022] Figure 3 It is a structural diagram of the heating laser of the present invention;

[0023] Figure 4 It is a schematic diagram of the laser operating temperature relationship model of the present invention;

[0024] Figure 5 It is a schematic diagram of the single-period laser driving waveform output by DAC (the horizontal coordinate represents the number of sampling points, and the vertical coordinate represents the amplitude of the waveform);

[0025] In the figure: 1. Pipe seat; 2. Pipe cap; 3. Pins; 4. Lens; 5. Laser chip; 6. Thermistor II; 7. Heating resistor; 8. Optical path turning structure; 9. Heat sink; 10. Thermistor I. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0027] For convenience of understanding, first, the interactors and / or terms and / or custom words involved in the present invention are explained in conjunction with the technical solutions of the present invention:

[0028] Heating type laser: including lens 4, laser chip 5, thermistor II 6, heating resistor 7, optical path turning structure 8, heat sink 9, tube cap 2, tube base 1 and tube pin 3, etc., the heat sink 9 is arranged on the tube base 1, the laser chip 5, thermistor II 6, heating resistor 7 and optical path turning structure 8 are arranged on the heat sink 9, the lens 4 is embedded in the tube cap 2, the tube cap 2 and the tube base 1 are sealed and connected, as shown in the attached Figure 3 As shown; the laser chip 5 is used to output laser, the optical path turning structure 8 is used to convert the laser emitted by the laser chip from horizontal light emission to vertical light emission, the lens 4 is used to realize the shaping of the laser beam, the heating resistor 7 is used to increase the temperature inside the heating type laser, the thermistor II 6 is used to detect the internal temperature of the heating type laser, and the heat sink 9 is used to absorb the heat generated when the laser is working and quickly export the heat to ensure the normal operation of the laser.

[0029] Thermistor I: It is set near the heating laser and located on the laser control board inside the sensor integrating the heating laser; it is used to detect the ambient temperature around the heating laser and can reflect the external ambient temperature parameters.

[0030] Absorption pit: refers to the depression or attenuation area in which the waveform appears at a specific position, representing the absorption of the specific frequency or wavelength range of light by the gas to be measured.

[0031] Driving waveform cycle T0: refers to the time of a driving waveform output by the heating laser; T0 = t1 + t0, t1 is the laser off time, t0 is the laser on time; the longer the laser off time and the shorter the on time, the less heat is generated inside the laser during the overall off and on time period;

[0032] The pre-configured laser shutdown time t1 and the laser turn-on time t0 are not equal, such as the laser turn-off time t1 > the laser turn-on time t0;

[0033] It should be noted that the laser shut-off time t1 corresponding to the same model of heating laser is the same, and the laser turn-on time t0 corresponding to the same model of heating laser is the same; the laser shut-off time t1 corresponding to different models of heating lasers may be the same or different; the laser turn-on time t0 corresponding to different models of heating lasers may be the same or different. Specifically, the laser shut-off time t1 and laser turn-on time t0 determined when the laser operating temperature relationship model is established shall prevail (at this time, the external temperature reflected by thermistor Ⅰ10 is within the set laser operating temperature range, and the position where the absorption pit appears in the t0 segment waveform is the middle position).

[0034] Driving waveform: The driving waveform of the laser has an important influence on its performance and stability, and mainly includes direct current (DC), triangle wave, sawtooth wave and pulse waveform, etc.; the driving waveform pre-stored in the present invention refers to the driving waveform corresponding to the laser off time t1 and the laser on time t0. The driving waveform output by the heating type laser is as shown in the attached Figure 5 shown.

[0035] Laser operating temperature relationship model: refers to the relationship model corresponding to the "external environment temperature parameter reflected by thermistor I10" and the "temperature difference parameter between the external environment temperature and the target operating temperature", which is associated with the pre-configured laser off time t1 and laser on time t0;

[0036] As attached Figure 4 As shown, the horizontal axis is the external environment temperature parameter x i , specifically refers to the ambient temperature AD value measured by the thermistor I10 (the AD value refers to the AD sampling value obtained after the output value of the thermistor I is converted by the Analog-to-DigitalConverter circuit or the like);

[0037] As attached Figure 4 The vertical coordinate is the temperature difference parameter Δ corresponding to the heating laser i , specifically refers to the difference between the external ambient temperature parameter reflected by thermistor Ⅰ10 and the target operating temperature parameter of the laser (the difference between the ambient temperature AD value measured by thermistor Ⅰ and the target operating temperature AD value of the laser).

[0038] Example 1

[0039] This embodiment provides a specific embodiment of a control method for a heating laser, such as Figure 1 As shown; the control method includes:

[0040] The laser operating temperature relationship model is constructed in advance, and the corresponding laser shutdown time t1 and laser opening time t0 are pre-configured; wherein the laser operating temperature relationship model is expressed as Δ AD =a1×x-a2,Δ AD It represents the temperature difference parameter corresponding to the heating laser, x represents the external ambient temperature parameter reflected by the thermistor I10, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient;

[0041] Obtain the external ambient temperature parameter x detected in real time by the thermistor I10 i , according to the external environment temperature parameter x i With the laser working temperature relationship model, determine the temperature difference parameter Δ corresponding to the heating laser i;

[0042] Based on the temperature difference parameter Δ i and the external environment temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein the real-time target operating temperature parameter = the external ambient temperature parameter x i - The temperature difference parameter Δ i ;

[0043] The heating laser is controlled based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

[0044] It should be noted that the absorption pit position meets the preset conditions, which means that when the target gas is present, during the laser wavelength scanning process, the position where the absorption pit appears in the t0 segment waveform is in the middle position of the t0 segment waveform.

[0045] It should be noted that the present invention pre-configures the laser off time t1, the laser on time t0 and the corresponding laser off time t1 and laser on time t0. After the heating laser is started, the heating laser is controlled based on the real-time target operating temperature parameters and the pre-configured laser off time t1 and laser on time t0, so that the absorption pit position detected by the detector meets the preset conditions, thereby quickly and accurately controlling the heating laser in the absence of a reference gas chamber and a reference detector.

[0046] In some embodiments, the heating laser is controlled based on the pre-configured laser turn-off time t1 and the laser turn-on time t0, including:

[0047] Prestore the drive waveforms corresponding to the laser shutdown time t1 and the laser turn-on time t0;

[0048] After the heating laser is started, the heating laser outputs a pre-stored driving waveform; wherein the driving waveform refers to a driving waveform corresponding to the laser off time t1 and the laser on time t0, and the pre-configured laser off time t1 and laser on time t0 are not equal.

[0049] For example, in actual products, the laser shutdown time t1 is 10 milliseconds and the laser turn-on time t0 is 5 milliseconds.

[0050] It should be noted that the heating laser outputs a pre-stored driving waveform and the operating temperature adjustment of the heating laser can be performed in parallel to improve the response speed.

[0051] In some embodiments, the heating laser is controlled based on the real-time target operating temperature parameters, including:

[0052] Based on the real-time target operating temperature parameter, the working temperature of the heating laser is dynamically adjusted using the heating resistance inside the heating laser.

[0053] It should be noted that the operating temperature of the heating laser is usually greater than the operating temperature of the sensor integrating the heating laser, so the target operating temperature of the heating laser will also be greater than the temperature reflected by thermistor I; once the real-time target operating temperature parameter (laser target operating temperature) is determined, the operating temperature of the heating laser can be dynamically adjusted through the heating resistor inside the laser;

[0054] For example, the target operating temperature of the heating laser is 60°C (the temperature value obtained after converting the real-time target operating temperature parameters), and the external ambient temperature reflected by thermistor Ⅰ10 collected by the processor is 40°C. Then, the proportional-integral-differential algorithm and the heating resistor control circuit are used to raise the temperature near the heating laser to 60°C.

[0055] It should also be noted that the present invention is based on the external ambient temperature parameter x i The corresponding temperature difference parameter Δ is determined by the laser operating temperature relationship model i , and then based on the temperature difference parameter Δ i and the external environment temperature parameter x i Determine real-time target operating temperature parameters, thereby improving the accuracy of target operating temperature and further improving detection accuracy.

[0056] It should also be noted that the value range of the first temperature coefficient a1 is 0.9 to 1, and the value range of the second temperature coefficient a2 is 660 to 700.

[0057] Example 2

[0058] Based on Embodiment 1, this implementation provides a specific implementation method for pre-constructing a laser operating temperature relationship model;

[0059] Specifically, when pre-constructing the laser operating temperature relationship model, perform:

[0060] (1) Use ring gas boxes, infrared analyzers and other equipment to build a test environment to study the laser working temperature relationship model;

[0061] (2) Determine the driving current range of the detection target gas according to the laser data sheet, and use Figure 5The target laser is driven by the laser driving mode in . At this time, the laser off time t1 is first set to be equal to the laser on time t0; when the target gas exists, the absorption pit position of the t0 segment waveform is set to its middle position;

[0062] (3) Set the temperature of the annular gas box to the highest working environment temperature of the laser gas sensor, introduce a certain concentration of target gas, and adjust the position of the absorption pit in the t0 segment waveform by changing the working temperature of the laser. The problems at this time are: (1) No matter how the working temperature of the laser is changed, the position of the absorption pit in the t0 segment waveform is not in the middle; (2) The temperature fed back by thermistor Ⅰ10 gradually exceeds the maximum working temperature of the laser;

[0063] (4) To solve the problem in (3), while the driving waveform of segment t0 remains unchanged, gradually increase the laser off time t1, so that the temperature fed back by thermistor I10 is within the set operating temperature range of the laser, and the absorption pit position of the waveform of segment t0 is in the middle position, and the "waveform of laser off time t1 and laser on time t0" in this case is used as the final driving waveform of the laser. Record the operating temperature of the laser at this time as the target operating temperature parameter, and record the AD value reflected by thermistor I collected by the processor as the external environment temperature parameter;

[0064] (5) Keep the laser shutdown time t1 and the laser turn-on time t0 unchanged;

[0065] While keeping the concentration of the target gas unchanged, change the working temperature of the annular gas box every 10°C. By changing the working temperature of the laser, make the temperature fed back by thermistor Ⅰ10 be in the set laser working temperature range and the position where the absorption pit appears in the t0 segment waveform as the middle position. Record the target working temperature parameters of the laser and the external environment temperature parameters reflected by thermistor Ⅰ10 at this time.

[0066] (6) Establish a relationship model between the external ambient temperature parameters of the thermistor I reaction and the temperature difference parameters corresponding to the heating laser, and pre-store them into the laser control board.

[0067] It should be noted that different external environment temperature parameters correspond to different laser target operating temperature parameters; when the laser operating temperature relationship model is pre-built, different laser target operating temperature parameters are set for different external environment temperature parameters at different temperature chamber temperatures. Specifically, the lower the external environment temperature, the higher the laser target operating temperature.

[0068] In one specific embodiment, the correspondence between the external ambient temperature parameters and the temperature difference parameters corresponding to the heating laser are shown in the following table:

[0069]

[0070] The laser operating temperature relationship model fitted based on the data in the above table is expressed as: Δ AD =0.9899x-690.81, at this time, a1 is 0.9899 and a2 is 690.81; as attached Figure 4 The vertical coordinate indicates the temperature difference parameter Δ corresponding to the heating laser AD , the horizontal coordinate represents the external ambient temperature parameters reflected by the thermistor I10;

[0071] For example, the external ambient temperature parameter x detected by thermistor I in real time i To be 1600, the temperature difference parameter Δ corresponding to the heating laser is obtained according to the laser operating temperature relationship model. i It is 893.03, and then the real-time target operating temperature parameter of the heating laser is determined = 1600-893.03=706.97;

[0072] When determining the real-time target operating temperature parameters and subsequently dynamically adjusting the operating temperature of the heating laser according to the real-time target operating temperature parameters, there is no need to convert the unit of the AD value into °C, in order to save processing time and improve response speed.

[0073] In another specific embodiment, the correspondence between the external ambient temperature parameters and the temperature difference parameters corresponding to the heating laser are shown in the following table:

[0074]

[0075] The laser operating temperature relationship model fitted based on the data in the above table is expressed as: Δ AD =0.9903x-661.02, at this time a1 is 0.9903, a2 is 661.02; the vertical coordinate represents the temperature difference parameter Δ corresponding to the heating laser AD , the horizontal coordinate represents the external ambient temperature parameters reflected by the thermistor I;

[0076] For example, the external ambient temperature parameter x detected by thermistor I in real time i To be 1800, the temperature difference parameter Δ corresponding to the heating laser is obtained according to the laser operating temperature relationship model. i It is 1121.52, and then the real-time target operating temperature parameter of the heating laser is determined = 1800-1121.52=670.48.

[0077] Example 3

[0078] Based on the same inventive concept, this embodiment provides a specific implementation of a control system for a heating type laser. The implementation solution provided by the control system is similar to the implementation solution described in the above method, so the specific limitations in one or more control system embodiments provided below can refer to the limitations of the control method for the heating type laser above, and will not be repeated here.

[0079] As attached Figure 2 As shown, the control system of the heating laser includes a configuration module, a real-time temperature difference determination module, a real-time target operating temperature determination module and a control module, wherein,

[0080] The configuration module is used to pre-build a laser operating temperature relationship model and pre-configure the corresponding laser off time t1 and laser on time t0; wherein the laser operating temperature relationship model is expressed as Δ AD =a1×x-a2,Δ AD It represents the temperature difference parameter corresponding to the heating laser, x represents the external ambient temperature parameter reflected by the thermistor I, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient;

[0081] The real-time temperature difference determination module is used to obtain the external ambient temperature parameter x detected by the thermistor I in real time i , according to the external environment temperature parameter x i With the laser working temperature relationship model, determine the temperature difference parameter Δ corresponding to the heating laser i ; Wherein, the temperature difference parameter Δ i It refers to the difference between the external ambient temperature parameter of the thermistor I and the laser target operating temperature parameter;

[0082] The real-time target operating temperature determination module is used to determine the temperature difference parameter Δ i and the external environment temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein the real-time target operating temperature parameter = the external ambient temperature parameter x i - The temperature difference parameter Δ i ;

[0083] The control module is used to control the heating laser based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

[0084] In some embodiments, the configuration module is also used for:

[0085] The drive waveforms corresponding to the laser shutdown time t1 and the laser turn-on time t0 are pre-stored; among which, the pre-configured laser shutdown time t1 and the laser turn-on time t0 are not equal.

[0086] In one specific embodiment, after the heating laser is started, the control module causes the heating laser to output a pre-stored driving waveform, specifically including:

[0087] (1) Initialize the timing interval of timer 0 to 10 milliseconds and the timing interval of timer 1 to 5 microseconds; turn off timer 0 and turn on timer 1; (The reason is: considering the response time, the maximum operating temperature of the laser gas sensor is increased from 55°C to 65°C)

[0088] (2) Use DAC to output waveform points in the timing interrupt of timer 1. After power-on, output from the first waveform point. Each time timer 1 is interrupted, use DAC to output a waveform point until the last waveform point is output. Then, turn off timer 1, turn on timer 0, and turn off the laser.

[0089] (3) Once the timing interruption of timer 0 is entered, turn on timer 1, turn off timer 0, and then repeat the steps of (2) and (3).

[0090] Note: The fixed time interval of timer 0 is determined according to the laser turn-off time t1, and the fixed time interval of timer 1 is determined according to the laser turn-on time t0 / N, and N is the preset total number of waveform points.

[0091] In some embodiments, the control system of the heating laser further includes an operating temperature adjustment module, which is used to dynamically adjust the operating temperature of the heating laser according to the real-time target operating temperature parameter.

[0092] It should be noted that combined with the application scenarios of laser gas sensors (such as home scenarios), the use of a heated laser control system can effectively broaden the high-temperature usage environment of laser gas sensors.

[0093] It should also be noted that the present invention can also effectively reduce the cost of laser gas sensors (reference detectors and reference gas chambers can be removed).

[0094] It should also be noted that the longer the laser is turned off and the shorter the laser is turned on, the less heat is generated inside the laser during the overall time period of turning off and on; therefore, the present invention reduces the operating power consumption of the laser and the laser gas sensor as much as possible while making the absorption pit position detected by the detector meet the preset conditions, thereby improving the detection accuracy.

[0095] Example 3

[0096] Based on the above embodiment, this embodiment provides a specific implementation of a computer device, which includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus;

[0097] Memory, used to store computer programs;

[0098] When a processor is used to execute a program stored in the memory, it implements a control method of a heating laser as described in Example 1 or 2.

[0099] On the basis of the above embodiments, this embodiment further provides a readable storage medium, on which instructions are stored, and when executed by one or more processors, the processors execute the control method of the heating laser as in Embodiment 1 or 2:

[0100] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0101] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A control method for a heating laser, characterized in that: include: Pre-construct a laser operating temperature relationship model, and pre-configure the corresponding laser off time t1 and laser on time t0; wherein the laser operating temperature relationship model is expressed as Δ AD =a1×x-a2,Δ AD represents the temperature difference parameter corresponding to the heating type laser, x represents the external environment temperature parameter reflected by thermistor I, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient; Get the external environment temperature parameter x detected by thermistor I in real time i , according to the external environment temperature parameter x i and the laser operating temperature relationship model to determine the temperature difference parameter Δ corresponding to the heating type laser i ; Based on the temperature difference parameter Δ i and the ambient temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein the real-time target operating temperature parameter = the external environment temperature parameter x i - The temperature difference parameter Δ i ; The heating laser is controlled based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

2. The control method of a heating laser according to claim 1, characterized in that: Control of the heating laser based on the pre-configured laser off time t1 and laser on time t0, including: After the heating laser is started, the heating laser outputs a pre-stored driving waveform; wherein the driving waveform refers to a driving waveform corresponding to the laser off time t1 and the laser on time t0, and the pre-configured laser off time t1 and laser on time t0 are not equal.

3. The control method of a heating laser according to claim 1 or 2, characterized in that: The heating laser is controlled based on the real-time target operating temperature parameter, including: Based on the real-time target operating temperature parameter, the operating temperature of the heating laser is dynamically adjusted.

4. A control system for a heating laser, characterized in that: It includes a configuration module, a real-time temperature difference determination module, a real-time target operating temperature determination module and a control module, wherein: The configuration module is used to pre-build a laser operating temperature relationship model and pre-configure the corresponding laser off time t1 and laser on time t0; wherein the laser operating temperature relationship model is expressed as Δ AD =a1×x-a2,Δ AD represents the temperature difference parameter corresponding to the heating type laser, x represents the external environment temperature parameter reflected by thermistor I, a1 represents the first temperature coefficient, and a2 represents the second temperature coefficient; The real-time temperature difference determination module is used to obtain the external environment temperature parameter x detected by thermistor I in real time. i , according to the external environment temperature parameter x i and the laser operating temperature relationship model to determine the temperature difference parameter Δ corresponding to the heating type laser i ; Wherein, the temperature difference parameter Δ i Refers to the difference between the external environment temperature parameter reflected by thermistor I and the target operating temperature parameter of the laser; The real-time target operating temperature determination module is used to determine the target operating temperature based on the temperature difference parameter Δ i and the ambient temperature parameter x i , determine the real-time target operating temperature parameter of the heating laser; wherein the real-time target operating temperature parameter = the external environment temperature parameter x i - The temperature difference parameter Δ i ; The control module is used to control the heating laser based on the real-time target operating temperature parameter and the pre-configured laser off time t1 and laser on time t0 so that the absorption pit position meets the preset conditions.

5. The control system of the heating laser according to claim 4, characterized in that: Configuration modules are also used to: Pre-store a driving waveform corresponding to the laser off time t1 and the laser on time t0; wherein the driving waveform refers to the driving waveform corresponding to the laser off time t1 and the laser on time t0, and the pre-configured laser off time t1 and the laser on time t0 are not equal.

6. The control system of the heating laser according to claim 4 or 5, characterized in that: It also includes an operating temperature adjustment module, which is used to dynamically adjust the operating temperature of the heating laser according to the real-time target operating temperature parameter.

7. A computer device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; Memory, used to store computer programs; The processor is used to implement the control method of the heating laser according to any one of claims 1 to 3 when executing the program stored in the memory.

8. A readable storage medium, characterized in that: Instructions are stored thereon, and when executed by one or more processors, the processors are caused to execute the control method of the heating laser according to any one of claims 1 to 3.

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