Method and system for dynamically controlling temperature of heating furnace of optical fiber fusion splicer

Abstract

The invention belongs to the technical field of optical fiber fusion splicers, and discloses an optical fiber fusion splicer heating furnace temperature dynamic control method and system. Preparing to enter a heating stage; calculating a current heating comprehensive coefficient according to the temperature rising speed; the temperature of the heating furnace is controlled by adjusting pulse width modulation, so that the temperature is kept within a target heat preservation temperature range, and the temperature stability is ensured; monitoring a heat value accumulated in the heating process in real time, and when the heat value is insufficient, prolonging the heat preservation time until the heat value reaches a preset target heat value to ensure that thermal shrinkage is completed; after thermal shrinkage is completed, heating is stopped, and the current heating comprehensive coefficient is stored. According to the invention, the dynamic adjustment control of the welding heating process is realized, so that the heat-shrinkable sleeve always obtains the consistent heat-shrinkable effect under different conditions, the heat-shrinkable consistency and reliability are improved, and the problem that a user needs to repeatedly heat due to the heating failure of the first core is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber fusion splicer, and particularly relates to a heating furnace temperature dynamic control method and system of optical fiber fusion splicer. BACKGROUND

[0002] After the optical fiber joint is fused and connected, the fusion point needs to be protected. Generally, corresponding specifications of heat shrinkable sleeves are used for different types of optical fibers. The main materials of the heat shrinkable sleeves are polyolefin (PO), fluoroplastic, and high-performance composite materials, etc. The heat shrinkable sleeves are generally melted at 140 degrees Celsius to 200 degrees Celsius. In order to improve the heating speed, the heating furnace temperature of the fusion splicer is generally set at about 230 degrees.

[0003] In the use process, the heat shrinkable sleeve is sleeved on the optical fiber joint and placed in the heating device for heat shrinkage and fastening. The existing heating furnace is in the form as shown in Figure 4 There is a group of heating materials (silver palladium paste / graphite resistance and other materials) between [A+] and [A-], and another group of heating materials between [B+] and [B-]. When the two groups of materials are powered on, the V-shaped groove can be heated.

[0004] The heating process of the heating furnace has two processes: one is the heating and temperature rising process, and the other is the temperature maintaining process. In the temperature rising process, the battery of the heating furnace is generally powered at full speed for heating. In the temperature maintaining process, the temperature of the heating furnace is stabilized in a certain range according to the real-time sampling temperature, and the heating furnace is closed after the heating time is sufficient.

[0005] The heating speed is mainly determined according to the heating groove material of the manufacturer (generally a resistive material) and the voltage applied to the material. There are generally two ways to sample the temperature on the heating furnace. One is to use a thermistor close to the heating groove to determine the current temperature according to the resistance change of the thermistor. The other is to determine the current heating furnace temperature according to the relationship between the current flowing through the heating material and the temperature change of the heating material according to the characteristics of the heating material itself. When the temperature rises, the resistance of the heating material itself changes, and then the current flowing through the heating material changes.

[0006] The existing heating furnace control is provided with an interface by software, and the user selects the corresponding heating template according to the length of the heat shrinkable sleeve. The heating template is a set of common parameters corresponding to the current heat shrinkable sleeve type, mainly including the control of the heating time and the highest heating temperature, and can adapt to part of the application scenarios.

[0007] The existing optical fiber fusion splicer heating furnace temperature control generally has the phenomenon that the heating effect is not the same: in winter, the first core heating may need to be heated continuously for 2 times to successfully heat shrink the heat shrink sleeve; and in summer, the heat shrink sleeve often appears "over-shrinking" after continuous heating. The reason is that the existing heating tank control method can be classified as simply controlling the heating time and the heating temperature, without dynamically controlling the temperature according to the ambient temperature and the heating tank temperature itself. The heating temperature and the heating time in the heating template are fixed, and when the parameters are not suitable, the user needs to manually adjust according to the field conditions. Since the temperature at the start of heating is not fixed, the cold furnace start and the hot furnace start are quite different. It takes about 8 seconds to reach the temperature of the hot furnace start when starting the cold furnace, which causes the first core heating temperature to be often insufficient, and the in-house optical fiber repair work generally only needs to fuse one core optical fiber, which causes great inconvenience to the installation and maintenance personnel.

[0008] In winter and summer, the ambient temperature differs greatly, and using the same set of heating parameters will also cause "incomplete heat shrinkage" in winter and "over-shrinking of the heat shrink sleeve" in summer, which also causes great disturbance to new installation and maintenance personnel. In addition, the material of the heat shrink sleeve is different, and the demand for heating temperature is also different.

[0009] Therefore, how to provide an optical fiber fusion splicer heating furnace temperature dynamic control method and system is a problem to be solved at present. SUMMARY

[0010] The embodiment of the present application provides an optical fiber fusion splicer heating furnace temperature dynamic control method and system to solve the problem that the prior art simply controls the heating time and the heating temperature without dynamically controlling the temperature according to the ambient temperature and the heating tank temperature itself.

[0011] To have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not an overview, nor is it intended to identify key / important elements or delineate the scope of the embodiments. Its sole purpose is to present some concepts in a simple form as a preamble to the detailed description that follows.

[0012] According to a first aspect of the embodiment of the present application, an optical fiber fusion splicer heating furnace temperature dynamic control method is provided.

[0013] In one embodiment, the optical fiber fusion splicer heating furnace temperature dynamic control method comprises:

[0014] selecting a preset heating template according to the specification of the heat shrink sleeve, obtaining a preset holding temperature and an overall heating time, and obtaining a basic heat value;

[0015] obtaining the starting temperature of the heating furnace, the ambient temperature and the atmospheric pressure, and preparing to enter the heating and temperature rising stage;

[0016] controlling the battery output at maximum power, quickly raising the temperature to the preset temperature, and calculating the current heating comprehensive coefficient according to the temperature rising speed;

[0017] controlling the temperature of the heating furnace by adjusting pulse width modulation, so that the temperature is kept within the target holding temperature range, and the temperature stability is ensured;

[0018] monitoring the cumulative heat value in real time during the heating process, prolonging the holding time when the heat value is insufficient, until the heat value reaches the preset target heat value, and ensuring that the heat shrinkage is completed; after the heat shrinkage is completed, the heating is stopped, and the current heating comprehensive coefficient is saved.

[0019] In one embodiment, the starting temperature of the heating furnace, the ambient temperature and the atmospheric pressure are obtained, and the preparation for entering the heating and temperature rising stage includes:

[0020] Before the heating starts, the starting temperature of the heating furnace is measured in real time by the temperature measurement part of the fusion machine, and the current ambient temperature and atmospheric pressure are obtained by the sensor as the basic data for compensation calculation;

[0021] Based on the starting temperature, the highest temperature in the temperature rising stage is calculated to ensure that the calculated highest temperature meets the preset value;

[0022] After ensuring that the highest temperature meets the requirements, the heating and temperature rising stage is prepared, and the heating is performed by adjusting the temperature rising power.

[0023] In one embodiment, the battery output is controlled at maximum power, the temperature is quickly raised to the preset temperature, and the current heating comprehensive coefficient is calculated according to the temperature rising speed, which includes:

[0024] The current heat value in the temperature rising stage is calculated using the real-time collected voltage and current, and the actual temperature rising heat value of the heat shrinkage sleeve is obtained;

[0025] The current heat value is calculated based on the standard heat shrinkage sleeve temperature rising heat value at the factory, and the current heating comprehensive coefficient is obtained;

[0026] The obtained current heat shrinkage sleeve coefficient is weighted with the previous heat shrinkage sleeve coefficient to obtain the actual heat shrinkage sleeve coefficient used;

[0027] The target holding temperature is compensated based on the obtained actual heat shrinkage sleeve coefficient used to obtain the compensated target holding temperature.

[0028] In one embodiment, the formula for weighting the obtained current heat shrinkage sleeve coefficient with the previous heat shrinkage sleeve coefficient is:

[0029]

[0030] In the formula, C userepresents the actual heat shrink tube coefficient; C pre represents the previous heat shrink tube coefficient; C cur represents the current heating comprehensive coefficient.

[0031] In one embodiment, by adjusting the pulse width modulation, the heating furnace temperature is controlled to maintain in the target holding temperature range, and the temperature stability is ensured, including:

[0032] Real-time monitoring of the deviation state between the current temperature and the target holding temperature;

[0033] If the current temperature is higher than the target holding temperature, the duty cycle of the pulse width modulation is reduced, and the heat output control is performed;

[0034] If the current temperature is lower than the target holding temperature, the duty cycle of the pulse width modulation is increased to supplement heat;

[0035] The duty cycle of the pulse width modulation is continuously adjusted dynamically to maintain the temperature in the target holding temperature range.

[0036] In one embodiment, when the heat value is insufficient, the holding time is extended, including:

[0037] Based on the voltage and current collected in real time during the heating-up stage, the cumulative heat value of heating is continuously calculated;

[0038] When the cumulative heat value does not reach the target holding heat value, the heating state is maintained until the target holding heat value after compensation is reached.

[0039] In one embodiment, the target holding heat value is obtained after compensation based on the basic heat value and the ambient temperature and atmospheric pressure, including:

[0040] The basic heat value is compensated based on the current ambient temperature and the ambient atmospheric pressure to obtain the target holding heat value.

[0041] In one embodiment, the calculation formula of the target holding heat value is:

[0042]

[0043] In the formula, W hold represents the target holding heat value; W init represents the basic heat value; T env represents the current ambient temperature; P env represents the current ambient atmospheric pressure; P sta represents the standard atmospheric pressure.

[0044] In one embodiment, based on the voltage and current collected in real time during the heating-up stage, the cumulative heat value of heating is continuously calculated, including:

[0045] According to the heat shrinkage template, a temperature target and a time are set, and a heat value calculation stage is prepared to enter;

[0046] The battery is controlled to output maximum power, and the heating furnace is quickly started to raise the temperature;

[0047] The voltage and current parameters in the heating stage are collected through a hardware circuit, and in each sampling period, the current power value is calculated;

[0048] The power at each time is multiplied by the sampling time difference, and the heat value is continuously integrated and calculated, and the heat value is updated and the current cumulative state is recorded after each integration operation.

[0049] According to a second aspect of the embodiment of the present application, a heating furnace temperature dynamic control system of an optical fiber fusion splicer is provided.

[0050] In one embodiment, the heating furnace temperature dynamic control system of the optical fiber fusion splicer comprises:

[0051] The template configuration and parameter initialization module is configured to select a preset heating template according to the specification of the heat shrinkage sleeve, obtain a preset holding temperature and an overall heating time, and obtain a basic heat value;

[0052] The environmental state and compensation calculation module is configured to obtain a starting temperature of the heating furnace, an ambient temperature and atmospheric pressure, and prepare to enter a heating stage;

[0053] The heating control module is configured to control the battery to output maximum power, quickly raise the temperature to a preset temperature, and calculate a current heating comprehensive coefficient according to the heating speed;

[0054] The holding temperature control module is configured to control the temperature of the heating furnace to remain in a target holding temperature range by adjusting pulse width modulation, and ensure temperature stability;

[0055] The heating termination and data saving module is configured to monitor the accumulated heat value in the heating process in real time, extend the holding time when the heat value is insufficient, until the heat value reaches a preset target heat value, and ensure that the heat shrinkage is completed; after the heat shrinkage is completed, the heating is stopped, and the current heating comprehensive coefficient is saved.

[0056] According to a third aspect of the embodiment of the present application, a computer device is provided.

[0057] In some embodiments, the computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0058] According to a fourth aspect of the embodiment of the present application, a computer readable storage medium is provided.

[0059] In one embodiment, the computer readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above method.

[0060] The technical solution provided by the embodiment of the application can include the following beneficial effects:

[0061] 1. The application realizes dynamic adjustment control of the fusion heating process by heat value calculation and real-time environmental parameter acquisition during the whole heating process, combining four key influencing factors of initial temperature, heat shrink sleeve material, environmental temperature and air pressure, respectively designing corresponding compensation methods, so that the heat shrink sleeve always obtains consistent heat shrink effect under different conditions, improving the consistency and reliability of heat shrink, and improving the problem of repeated heating due to the failure of the first core heating.

[0062] 2. The application uses a heating heat value statistical method instead of a traditional temperature detection method, effectively avoids control deviation problems caused by sensor installation errors and temperature unevenness, and realizes automatic compensation of possible heat value shortage in the heating process without increasing any hardware cost, improves heat shrink completion, reduces human intervention, and achieves the effect of saving time, saving electricity and sufficient heat shrink.

[0063] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0064] The accompanying drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0065] Figure 1 is a flow chart of a fiber fusion machine heating furnace temperature dynamic control method according to an exemplary embodiment;

[0066] Figure 2 is a principle block diagram of a fiber fusion machine heating furnace temperature dynamic control system according to an exemplary embodiment;

[0067] Figure 3 is a structural schematic diagram of a computer device according to an exemplary embodiment;

[0068] Figure 4 is a schematic diagram of the existing heating furnace form. DETAILED DESCRIPTION

[0069] The following description and drawings are illustrative of the specific embodiments herein and are not intended to be limiting. Parts and features of some embodiments can be included or replaced by parts and features of other embodiments. The scope of the embodiments herein includes the whole area of possibilities of the claims and all available equivalents of the claims. In this document, the terms "first", "second", etc. are used to distinguish one element from another element without requiring or implying any actual relationship or order between the elements. In fact, the first element could be named the second element and vice versa without changing the meaning of the description. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a structure, device, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such structure, device, or apparatus. Without more limitations, an element defined by an statement "comprising a" does not exclude the presence of additional identical elements in the structure, device, or apparatus that includes the element. The various embodiments are described in a progressive manner, each embodiment focusing on the differences with the other embodiments, and the same or similar parts between the various embodiments are cross-referenced.

[0070] The terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, as used herein, refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely used for convenience and simplicity of description herein and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description herein, unless otherwise specified and limited, the terms "mount", "connect", "connection" should be interpreted broadly, for example, it can be a mechanical connection or an electrical connection, it can be a communication between two elements inside, it can be a direct connection or an indirect connection through an intermediate medium, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0071] In this document, the term "plurality" means two or more, unless otherwise specified.

[0072] It should be understood that although the steps in the flowchart are shown in a sequential order, the steps need not be performed in the order shown by the arrows. Unless explicitly stated otherwise, the steps can be performed in any order, and the steps need not be performed in the order shown. Moreover, at least some of the steps can include multiple sub-steps or multiple stages, which need not be performed at the same time, and which need not be performed in a sequential order, but can be performed in an interleaved or alternating manner with at least some of the other steps or sub-steps or stages of other steps.

[0073] The modules in the device or system of the present application can be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in a computer device in software form, so as to be called and executed by a processor to perform the operations corresponding to the modules.

[0074] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0075] Figure 1 An embodiment of the optical fiber fusion splicer heating furnace temperature dynamic control method of the present application is shown.

[0076] In this optional embodiment, the optical fiber fusion splicer heating furnace temperature dynamic control method comprises:

[0077] Step S101, a preset heating template is selected according to the specification of the heat shrink sleeve, a preset holding temperature and an overall heating duration are obtained, and a basic heat value is obtained;

[0078] Step S102, the starting temperature of the heating furnace, the ambient temperature, and the atmospheric pressure are obtained, and the heating and warming-up stage is prepared to enter;

[0079] Step S103, the battery output is controlled at the maximum power to quickly raise the temperature to the preset temperature, and the current heating comprehensive coefficient is calculated according to the heating speed;

[0080] Step S104, the heating furnace temperature is controlled by adjusting the pulse width modulation (PWM wave) to keep it within the target holding temperature range, and the temperature stability is ensured;

[0081] Step S105, the accumulated heat value during the heating process is monitored in real time, when the heat value is insufficient, the holding time is extended until the heat value reaches the preset target heat value, and the heat shrink is completed; after the heat shrink is completed, the heating is stopped, and the current heating comprehensive coefficient is saved.

[0082] In the optional embodiment, when the starting temperature of the heating furnace, the ambient temperature and the atmospheric pressure are acquired, and the heating temperature rising stage is prepared to enter, the starting temperature of the heating furnace can be measured in real time by the temperature measurement part of the welding machine before the heating starts, and the current ambient temperature and atmospheric pressure are acquired by the sensor as the basic data for compensation calculation; based on the starting temperature, the highest temperature in the temperature rising stage is calculated to ensure that the calculated highest temperature meets the preset value; after ensuring that the highest temperature meets the requirements, the heating temperature rising stage is prepared to enter, and the heating is performed by adjusting the temperature rising power.

[0083] In the optional embodiment, when the battery output is controlled at the maximum power, the temperature is quickly raised to the preset temperature, and the current heating comprehensive coefficient is calculated according to the temperature rising speed, the current heating value in the temperature rising stage can be calculated by using the real-time collected voltage and current to obtain the actual heating value of the heat shrink sleeve; based on the standard heat shrink sleeve heating value at the factory, the current heat value is calculated by ratio to obtain the current heating comprehensive coefficient; the obtained current heat shrink tube coefficient and the previous heat shrink tube coefficient are weighted to obtain the actual used heat shrink tube coefficient; based on the obtained actual used heat shrink tube coefficient, the target temperature in the heat preservation stage is compensated to obtain the compensated target heat preservation temperature.

[0084] In the optional embodiment, when the temperature of the heating furnace is controlled by adjusting the pulse width modulation to keep it in the target heat preservation temperature range and ensure the temperature stability, the deviation state between the current temperature and the target heat preservation temperature can be monitored in real time; if the current temperature is higher than the target heat preservation temperature, the duty cycle of the pulse width modulation is reduced, and the heat output control is performed; if the current temperature is lower than the target heat preservation temperature, the duty cycle of the pulse width modulation is increased to supplement the heat; the duty cycle of the pulse width modulation is continuously adjusted dynamically to keep the temperature in the target heat preservation temperature range.

[0085] In the optional embodiment, when the heat value is insufficient, the heat preservation time is extended, the heat value accumulated by heating can be continuously calculated based on the real-time collected voltage and current in the temperature rising stage; when the accumulated heat value does not reach the target heat preservation heat value, the heating state is maintained until the compensated target heat preservation heat value is reached.

[0086] In the optional embodiment, when the target heat preservation heat value is obtained after the basic heat value is compensated based on the ambient temperature and atmospheric pressure, the basic heat value can be compensated based on the current ambient temperature and atmospheric pressure to obtain the target heat preservation heat value.

[0087] In this optional embodiment, when the voltage and current collected in real time based on the heating stage are used to continuously calculate the cumulative heat value of heating, the heating target temperature and time can be set according to the heat shrinkage template, and the heat value calculation stage is prepared to enter; the battery is controlled to output maximum power, and the heating furnace heating process is started quickly; the voltage and current parameters in the heating stage are collected through the hardware circuit, and the current power value is calculated in each sampling period; the power at each time is multiplied by the sampling time difference, and the heat value is continuously integrated and calculated; after each integral operation, the heat value is updated and the current cumulative state is recorded.

[0088] It should be explained that the present application realizes precise temperature control through multi-stage closed-loop control, needs to use the environmental sensor of the welding machine, compensates the heating effect according to the external environment temperature, and the core heating process is as follows:

[0089] 1) Select a preset heating template, in the template, there is the heat preservation temperature T target (unit: Celsius degree) required by the corresponding heat shrink sleeve and the overall heat preservation time t init (unit: second), the user can fine-tune the two parameters according to the actual situation, and the heat value W init required to be reached in the heat preservation process can be obtained according to the two parameters, as the basic heat value of this heating.

[0090] 2) Start heating, obtain the starting temperature T init of the heating furnace in Celsius degree, the temperature environment T env of the outside world in Celsius degree and the current atmospheric pressure P env .

[0091] 3) Heating process, in order to ensure the fastest heating speed, the maximum output power of the battery is used in this process to quickly raise the temperature to T max Celsius degree, and the current heating comprehensive coefficient C cur can be obtained according to the heating speed.

[0092] 4) Heat preservation process, the measured temperature is maintained at T hold Celsius degree through the PWM wave (pulse width modulation) in the adjusting circuit, if the temperature is higher than (T hold +1) Celsius degree, the duty cycle of the PWM wave is reduced, if the temperature continues to rise, the duty cycle of the PWM wave is continuously reduced, and if the temperature is lower than (T hold -1) Celsius degree, the duty cycle of the PWM wave is increased, and the temperature can be controlled at T hold ±3 Celsius degree.

[0093] 5) Judge whether the heat value is sufficient, if the heat value is not sufficient, continue to heat preservation until the heat value reaches W hold , that is, the heat shrinkage is completed.

[0094] 6) The heat preservation process is completed, the heat shrink sleeve is shrunk, the heating is stopped, and the current heating comprehensive coefficient C of the user is obtained cur Save it as C pre .

[0095] It needs to be explained that the detailed definition and relationship of each parameter are explained below.

[0096] 1) The following is a compensation method related to temperature test inaccuracy:

[0097] In the existing technology, the heating furnace is maintained at a fixed temperature for a certain time to achieve the effect of heat shrinkage. However, due to the difficulty in maintaining the assembly point of the thermosensitive sensor consistent, the distribution of the thermal resistance on the heating wire is not completely uniform, resulting in a great inaccuracy in temperature test. Further, in the production process, the heating effect of the welding machine will have great discreteness.

[0098] In the whole heating process, the heat value generated in the circuit is used to count the heat, instead of the traditional way. The test shows that this way is accurate and consistent, which is convenient for large-scale production. The calculation formula of the heat value is:

[0099]

[0100] In the formula, W represents the heat value, which is defined as the product of the sampling power at each time point and the time difference, which is sampled at intervals of Δt seconds from time t0 to time t1 in the heating process. The voltage U is the voltage across the heating furnace, and the current I is the current flowing through the heating furnace. These two parameters are collected by the hardware circuit and reflect the real-time sampling power of the heating furnace of the welding machine system.

[0101] Basic heat value W required in the heat preservation process init The basic heat value is calculated according to the time and heat preservation temperature set by the user, and the calculation formula is:

[0102] Winit=Ttar get ×tinit×fc onv ;

[0103] In the formula, heating f conv is the conversion coefficient, which is calibrated in the production process, and the initial value is 0.0174. The production personnel use the initial f conv value to heat, and observe the highest temperature after the temperature stabilizes. If the temperature is higher than 230 degrees Celsius or lower than 230 degrees Celsius, the f conv value is fine-tuned to ensure that the highest temperature is around 230 degrees Celsius.

[0104] f convThe initial value 0.0174 of the heat shrink tube coefficient is an empirical value. Ten welding machines are extracted, and the temperature is controlled at 230 degrees Celsius. After that, the heating time is observed to determine the best heat shrink effect of the heat shrink sleeve. The value can be obtained.

[0105] The heat shrink sleeve generally melts at 140 degrees Celsius to 200 degrees Celsius. To improve the heating speed, the heating furnace temperature of the welding machine is generally set at about 230 degrees. This temperature can ensure that the heat shrink sleeve melts quickly and that the sensors and machine body on the welding machine do not be affected by the excessively high temperature.

[0106] 2) The following is the compensation method related to the heat shrink sleeve material:

[0107] Different types of heat shrink sleeves require different heat values during the heat shrink process. The present application uses the difference between the heat value required by the heat shrink sleeve during the heating process and the heat value required by the standard sleeve to obtain the heat shrink tube coefficient. During the heat preservation process, the heat preservation temperature is adjusted appropriately according to the heat shrink tube coefficient to adapt to different heat shrink sleeves. This C cur compensates for the heat shrink tube coefficient. The principle is to compensate for the subsequent adjustment range of 200 degrees Celsius to 260 degrees Celsius according to the difference in heating speed during the heating process and the standard sleeve. The calculation formula of the heat shrink tube coefficient is:

[0108]

[0109] In the formula, C cur represents the heat shrink tube coefficient. The heat shrink performance of the heat shrink tube used by the user and the template (the template refers to the type of heat shrink sleeve selected by the user, including the length and thickness of the sleeve) used in the template may deviate, so the coefficient is recorded. W f200 is the heat value required by the general heat shrink tube from 120 degrees Celsius to 200 degrees Celsius in the room temperature environment at the time of factory shipment. W c200 is the heat value required by the current heat shrink sleeve from 120 degrees Celsius to 200 degrees Celsius under the condition of heating and heating. W f200 and W c200 use the heat value calculation formula. The formula for weighted calculation of the current heat shrink tube coefficient and the previous heat shrink tube coefficient is:

[0110]

[0111] In the formula, C use represents the actual heat shrink tube coefficient; C pre represents the previous heat shrink tube coefficient, which is used as a compensation coefficient for the compensation temperature T hold ; and C curThe current heating comprehensive coefficient is represented. Due to the influence of circuit instability and other factors, the actual heat shrink tube coefficient is the weighted value of the last heat shrink tube coefficient and the current heat shrink tube coefficient, and the specific formula is shown in the current heat shrink tube coefficient and the last heat shrink tube coefficient. and The empirical value is obtained empirically, and the purpose is to make the heat shrink sleeve coefficient not only affected by the current heating process, but also to avoid the randomness of the current heating process, so as to cause the final heating effect to be not good. The calculation formula of the supplementary holding temperature is:

[0112] T hold = T target × C cur ;

[0113] In the formula, T hold is the supplementary holding temperature (the heating temperature that should be maintained in the holding process), which is determined by the template temperature selected by the user and the heat shrink tube heating coefficient, and is obtained from the calculation formula of the supplementary holding temperature. T target is the target heating temperature, which is a value given by the user according to different heating templates when selecting a heating template.

[0114] 3) The following is the compensation method related to the starting temperature of the heating tank:

[0115] The starting temperature of the heating tank will seriously affect the heat shrink effect of the heat shrink tube. According to the actual measurement, the heating heat value required when the cold furnace starts is greater than the heat value when the hot furnace starts. This is also the reason why many users reflect that the first core fusion needs to be heated twice after the fusion machine is started. The existing heating furnace heating scheme generally sets the target temperature in the heating process to T target , which is determined by the heating template. However, the present application adopts the method of adjusting the maximum temperature T max in the heating process to compensate, that is, power overshoot compensation. In the ordinary heating process, when the temperature reaches T target , the full-power heating process is stopped and the holding stage is entered. The method proposed in the present application adopts the method of increasing the maximum temperature T max in the heating process to compensate for the poor heating effect when the cold furnace starts, and when the temperature reaches T max , the holding stage is entered. Due to the short time of T max temperature maintenance and the temperature not exceeding 280 degrees Celsius, the structure or circuit equipment of the fusion machine will not be damaged. The calculation formula of the maximum temperature is:

[0116]

[0117] Since temperature exceeds 280 degrees Celsius, it can cause damage to the structure or circuit of the fusion machine, so the maximum temperature T max is limited to 280 degrees Celsius, and since the maximum temperature of the heating process should be greater than or equal to the temperature of the holding process, T max is less than T target , which is meaningless, so T max is limited to the minimum value T target ; T init is the starting temperature of the heating furnace, which is measured by the temperature measuring part of the heating furnace of the fusion machine before heating starts.

[0118] 4) The following is a compensation method related to ambient temperature and ambient pressure:

[0119] The ambient temperature can increase the temperature deviation of the test point of the heating tank and the actual heat shrink sleeve, and the air pressure can affect the heating efficiency of the heating tank on the heat shrink tube. The present application adopts the method of increasing the holding heat value W hold to reduce the influence of the external environment and air pressure on the heat shrink effect. That is, the final heat value of heating is based on the heat value of the user set template pair, and the ambient temperature and air pressure are taken as compensation coefficients to adjust the final heat value W hold of heating (i.e. the target holding heat value) moderately. When the total heat value accumulated by heating is not enough, continue heating until the total heat value reaches the target value to achieve the goal of good heat shrink effect of the heat shrink sleeve. The calculation formula of the target holding heat value is:

[0120]

[0121] In the formula, W hold represents the target holding heat value; W init represents the basic heat value; T env represents the current ambient temperature (the temperature environment of the outside world, measured by the environmental sensing part of the fusion machine); P env represents the current ambient atmospheric pressure; P sta represents 1 standard atmospheric pressure.

[0122] Figure 2 An embodiment of the optical fiber fusion machine heating furnace temperature dynamic control system of the present application is shown.

[0123] In this alternative embodiment, the optical fiber fusion machine heating furnace temperature dynamic control system comprises:

[0124] The template configuration and parameter initialization module 201 is used to select a preset heating template according to the specifications of the heat shrink sleeve, obtain a preset holding temperature and overall heating time, and obtain a basic heat value;

[0125] The environmental state and compensation calculation module 202 is used to obtain the starting temperature of the heating furnace, the ambient temperature and the atmospheric pressure, and prepare to enter the heating and warming-up stage;

[0126] The heating temperature control module 203 is used to control the battery output at the maximum power, quickly raise the temperature to the preset temperature, and calculate the current heating comprehensive coefficient according to the heating speed;

[0127] The holding temperature control module 204 is used to control the heating furnace temperature by adjusting the pulse width modulation, so that the temperature is kept in the target holding temperature range, and the temperature stability is ensured.

[0128] The heating termination and data saving module 205 is used to monitor the cumulative heat value in the heating process in real time, extend the holding time when the heat value is insufficient, until the heat value reaches the preset target heat value, and ensure that the heat shrink is completed. After the heat shrink is completed, the heating is stopped, and the current heating comprehensive coefficient is saved.

[0129] In an embodiment, a computer device, which can be a server, has an internal structure diagram as shown in Figure 3 The computer device includes a processor, a memory and a network interface connected through a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store static information and dynamic information data. The network interface of the computer device is used to communicate with external terminals through network connection. The computer program is executed by the processor to implement the steps in the above method embodiments.

[0130] Those skilled in the art can understand that Figure 3 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. A specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0131] In addition, the present application also provides a computer device including a memory and a processor, the memory stores a computer program, and the processor implements the steps in the above method embodiments when executing the computer program.

[0132] In addition, the present application also provides a computer readable storage medium having a computer program stored thereon, and the computer program is executed by the processor to implement the steps in the above method embodiments.

[0133] 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 relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiments. Any reference to memory, storage, database or other medium used in each embodiment of 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 or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0134] The present application is not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer, characterized in that: include: Select the preset heating template according to the specifications of the heat shrink tubing, obtain the preset insulation temperature and overall heating time, and obtain the basic calorific value; Obtain the starting temperature of the heating furnace, the external ambient temperature and the atmospheric pressure, and prepare to enter the heating stage; Control the battery output at maximum power, quickly raise the temperature to the preset temperature, and calculate the current heating comprehensive coefficient based on the heating rate; By adjusting the pulse width modulation, the heating furnace temperature is controlled to keep it within the target insulation temperature range to ensure temperature stability; Real-time monitoring of the accumulated calorific value during the heating process. When the calorific value is insufficient, the insulation time is extended until the calorific value reaches the preset target calorific value to ensure that the heat shrinkage is completed. After the heat shrinkage is completed, the heating is stopped and the current comprehensive heating coefficient is saved.

2. The method for dynamically controlling the temperature of the heating furnace of the optical fiber fusion splicer according to claim 1, characterized in that: The step of obtaining the starting temperature of the heating furnace, the external ambient temperature, and the atmospheric pressure and preparing to enter the heating and temperature raising stage includes: Before heating begins, the starting temperature of the heating furnace is measured in real time by the temperature measurement part of the welding machine, and the current external ambient temperature and atmospheric pressure are obtained through the sensor as the basic data for compensation calculation; Based on the starting temperature, calculate the maximum temperature in the heating stage to ensure that the calculated maximum temperature meets the preset value; After ensuring that the maximum temperature meets the requirements, prepare to enter the heating stage and heat by adjusting the heating power.

3. The method for dynamically controlling the temperature of the heating furnace of the optical fiber fusion splicer according to claim 1, characterized in that: The method of controlling the battery output at maximum power, rapidly raising the temperature to a preset temperature, and calculating the current heating comprehensive coefficient based on the heating rate includes: The calorific value of the current heating stage is calculated using the voltage and current collected in real time to obtain the actual heating value of the current heat shrink tubing; The current comprehensive heating coefficient is obtained by calculating the ratio of the current heating value to the standard heat shrink tubing heating value at the time of leaving the factory. The current heat shrink tube coefficient obtained is weightedly calculated with the previous heat shrink tube coefficient to obtain the heat shrink tube coefficient actually used; The target temperature of the insulation stage is compensated based on the obtained actually used heat shrink tube coefficient to obtain a compensated target insulation temperature.

4. The method for dynamically controlling the temperature of the heating furnace of the optical fiber fusion splicer according to claim 3, characterized in that: The formula for weighted calculation of the current heat shrink tube coefficient and the previous heat shrink tube coefficient is: Where C use Indicates the actual heat shrink tube coefficient used; C pre Indicates the previous heat shrinkage coefficient; C cur Indicates the current comprehensive heating coefficient.

5. The method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer according to claim 1, wherein: The method of controlling the temperature of the heating furnace by adjusting pulse width modulation to keep it within the target holding temperature range and ensuring temperature stability includes: Real-time monitoring of the deviation between the current temperature and the target insulation temperature; If the current temperature is higher than the target insulation temperature, the duty cycle of the pulse width modulation is reduced and the heat output is controlled; If the current temperature is lower than the target insulation temperature, the duty cycle of the pulse width modulation is increased to supplement the heat; The PWM duty cycle is continuously and dynamically adjusted to keep the temperature within the target holding temperature range.

6. The method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer according to claim 1, wherein: When the calorific value is insufficient, extending the insulation time includes: Based on the voltage and current collected in real time during the heating stage, the accumulated calorific value of heating is continuously calculated; When the accumulated calorific value does not reach the target insulation calorific value, the heating state is maintained until the compensated target insulation calorific value is reached.

7. The method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer according to claim 6, wherein: The target thermal insulation value is obtained by compensating the basic thermal value with the ambient temperature and atmospheric pressure, including: The basic calorific value is compensated based on the current ambient temperature and ambient atmospheric pressure to obtain the target insulation calorific value.

8. The method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer according to claim 1, wherein: The calculation formula of the target thermal insulation value is: Where W hold Indicates the target thermal insulation value; W init Indicates basic calorific value; T env Indicates the current ambient temperature; P env Indicates the current ambient atmospheric pressure; P sta Indicates standard atmospheric pressure.

9. The method for dynamically controlling the temperature of a heating furnace of an optical fiber fusion splicer according to claim 6, wherein: The continuous calculation of the accumulated heating value based on the voltage and current collected in real time during the heating stage includes: Set the target temperature and time for heating according to the heat shrink template and prepare to enter the calorific value calculation stage; Control the battery to output at maximum power and quickly start the heating furnace heating process; The voltage and current parameters during the heating phase are collected through the hardware circuit, and the current power value is calculated in each sampling period; Multiply the power at each moment by the sampling time difference, and continuously integrate to calculate the calorific value. After each integration operation is completed, the calorific value is updated and the current accumulation status is recorded.

10. A temperature dynamic control system for a heating furnace of an optical fiber fusion splicer, characterized in that: include: The template configuration and parameter initialization module is used to select the preset heating template according to the specifications of the heat shrink tubing, obtain the preset insulation temperature and overall heating time, and obtain the basic calorific value; The environmental status and compensation calculation module is used to obtain the starting temperature of the heating furnace, the external ambient temperature and the atmospheric pressure, and prepare to enter the heating stage; The heating and temperature rise control module is used to control the battery output at maximum power, quickly raise the temperature to the preset temperature, and calculate the current heating comprehensive coefficient based on the heating rate; The insulation temperature control module is used to control the temperature of the heating furnace by adjusting the pulse width modulation to keep it within the target insulation temperature range and ensure temperature stability; The heating termination and data saving module is used to monitor the accumulated calorific value during the heating process in real time. When the calorific value is insufficient, the insulation time is extended until the calorific value reaches the preset target calorific value to ensure that the heat shrinkage is completed; after the heat shrinkage is completed, the heating is stopped and the current comprehensive heating coefficient is saved.

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