CN115941055B - Execution method and related equipment for oil well information transmission - Google Patents
Execution method and related equipment for oil well information transmission Download PDFInfo
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- CN115941055B CN115941055B CN202310233384.0A CN202310233384A CN115941055B CN 115941055 B CN115941055 B CN 115941055B CN 202310233384 A CN202310233384 A CN 202310233384A CN 115941055 B CN115941055 B CN 115941055B
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Abstract
The invention discloses an execution method and related equipment for oil well information transmission, and belongs to the technical field of oil well information transmission, wherein the method comprises the following steps: acquiring the working temperature of a first light modulation module in an oil well; acquiring a correlation curve of the threshold current and the working temperature of the first light modulation module, obtaining the threshold current at the working temperature according to the correlation curve, and setting a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current; the first driving current of the first light modulation module is regulated so that the first driving current is alternately equal to the first current value and the second current value in a period of time for maintaining the working temperature. The execution method for oil well information transmission provided by the invention can adjust the driving current of the first optical modulation module, thereby ensuring stable extinction ratio in the optical cable transmission process and avoiding the influence of optical signals on the stability of transmission signals due to high-temperature environment.
Description
Technical Field
The present disclosure relates to the field of oil well information transmission technologies, and in particular, to an execution method of oil well information transmission and related devices.
Background
Along with the continuous expansion of the volume and scale of oil and gas field exploitation, the informatization technology is widely applied in the development of oil and gas fields. In oil gas development, the underground measuring instrument conveys various detection parameters in the oil gas well to the ground display control terminal in the whole process, so that the ground display control terminal judges and regulates and controls the working state in the oil gas well in real time.
The optical fiber communication is an information transmission mode which takes optical fibers as transmission media and light as a signal carrier, and has the characteristics of high transmission rate, simple structure, intrinsic safety and the like of a transmission cable, and meets the future development requirements of oil well development; however, because the applicable environment temperature range of the optical cable is limited, the speed state of the optical cable for actually transmitting information is extremely easy to be influenced by the high-temperature environment of the oil well, so that the reliability and the stability of the optical cable are poor, and the development and the application of the optical cable for transmitting information in the oil well are not facilitated.
Therefore, there is a need to solve the problem that the stability of the transmission signal is easily affected by the high temperature environment when the optical cable is used for oil well transmission in the prior art.
Disclosure of Invention
In view of the foregoing, it is an object of the present application to provide a method and related apparatus for performing oil well information transmission, so as to solve the problems mentioned in the background art.
Based on the above object, the present application provides an execution method for oil well information transmission, where an underground transmission device and a ground transmission device transmit information through an optical cable, and the underground transmission device transmits information to the ground transmission device through a first optical modulation module, and the method includes:
acquiring the working temperature of a first light modulation module in an oil well;
acquiring a correlation curve of threshold current and working temperature of a first light modulation module, obtaining the threshold current at the working temperature according to the correlation curve, and setting a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature;
the first driving current of the first light modulation module is regulated so that the first driving current is alternately equal to the first current value and the second current value in a period of time for maintaining the working temperature.
Further, the adjusting the first driving current of the first light modulation module to make the first driving current alternately equal to the first current value and the second current value in a period of maintaining the working temperature includes:
controlling the first light modulation module to regulate the first driving current according to the standard binary data input into the first light modulation module;
wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
Further, an absolute difference between the first current value and the threshold current is set as a first coefficient, and an absolute difference between the second current value and the threshold current is set as a second coefficient, the method comprising:
acquiring a first output light power value of a first light modulation module;
increasing the first coefficient in response to the first output optical power value being greater than a first preset threshold;
and increasing the second coefficient in response to the first output optical power value being less than a second preset threshold.
Further, the ground transmission device transmits information to the underground transmission device through a second optical modulation module, and the second optical modulation module is configured to receive the modulated optical signal of the first optical modulation module, and the method includes:
acquiring a received light power value of a modulated light signal of the second light modulation module;
calculating a difference between the received light power value and the first output light power value;
the control optical signal power adjusting module amplifies the received optical signal so that the received optical power value is equal to the first output optical power value.
Further, the ground transmission device transmits information to the underground transmission device through a second optical modulation module, and the first optical modulation module is configured to receive an output optical signal of the second optical modulation module, and the method includes:
acquiring a second output optical power value of an output optical signal of the second optical modulation module;
calculating the difference value between the first output optical power value and the actual optical power value received by the second optical modulation module to obtain the transmission loss value of the optical signal;
and adjusting the second driving current of the second optical modulation module to enable the second output optical power value to be in a preset value so as to meet the requirement of the first optical modulation module on the received optical signal power value.
Further, the control optical signal power adjustment module amplifies the received optical power value, and then includes:
controlling the optical conversion module to convert the received optical signal into a digital electrical signal;
and receiving the converted digital electric signals, and analyzing and displaying the digital signals.
In addition, the application further provides an oil well information transmission system, which can be applied to the execution method of any one of the above steps, including:
the temperature detection module is configured to acquire the working temperature of the first light modulation module in the oil well;
the first control processing module is configured to acquire a correlation curve of a threshold current and a working temperature of the first light modulation module, obtain the threshold current at the working temperature according to the correlation curve, and set a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature;
and a first driving module configured to adjust a first driving current of the first light modulation module such that the first driving current is alternately equal to the first current value and the second current value for a period of time in which the operating temperature is maintained.
Further, the first driving module is configured to control the first light modulation module to perform the first driving current adjustment according to the standard binary data input therein;
wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
Based on the same inventive concept, the present disclosure also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable by the processor, the processor implementing the method as described above when executing the computer program.
Based on the same inventive concept, the present disclosure also provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method as described above.
As can be seen from the foregoing, in the implementation method for oil well information transmission provided in this embodiment, after the working temperature of the first optical modulation module is obtained, the threshold current at the working temperature is obtained according to the working temperature, and the first current value and the second current value are set according to the threshold current, and since the first current value and the second current value correspond to the brightness change of the optical signal, the brightness change of the optical signal can be more obvious by setting the first current value and the second current value, which is beneficial to improving the sensitivity of the subsequent received optical signal; in addition, the first current value and the second current value are set according to the threshold current, so that the first optical modulation module can always keep stable optical output power at different working temperatures, unstable extinction ratio of optical signals caused by temperature influence of the first optical modulation module is avoided, and signal transmission stability of the optical cable in an oil well is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is a schematic diagram showing the variation relationship between the output optical power and the driving current at different working temperatures in the embodiment of the present application;
FIG. 2 is a graph showing the correlation of threshold current with operating temperature in an embodiment of the present application;
FIG. 3 is a flowchart illustrating steps in a method of performing an embodiment of the present application;
FIG. 4 is a flowchart illustrating another step in the method according to an embodiment of the present application;
FIG. 5 is a flowchart illustrating another step in the method of performing an embodiment of the present application;
FIG. 6 is a flowchart illustrating another step in the method of performing an embodiment of the present application;
fig. 7 is a schematic diagram of components of a first light modulation module according to an embodiment of the present application;
FIG. 8 is a schematic diagram of the components of a second light modulation module according to an embodiment of the present application;
FIG. 9 is a workflow diagram of a method of performing an embodiment of the present application;
FIG. 10 is a schematic diagram of a port of a first interface module according to an embodiment of the present application;
FIG. 11 is a schematic diagram of a port of a second interface module according to an embodiment of the present application;
fig. 12 is a schematic diagram of a hardware structure of an electronic device in an embodiment of the application.
Description of the reference numerals
11. A temperature detection module; 12. a first control processing module; 13. a first driving module; 14. a first optical power detection module; 15. a first optical module; 16. a first interface module; 17. a first receiving conversion module; 18. a first laser;
21. a second control processing module; 22. a second driving module; 23. a second optical power detection module; 24. a second optical module; 25. a second interface module; 26. a second receiving conversion module; 27. a second laser; 28. an optical signal power adjustment module;
31. an optical circulator; 32. a beam splitter; 1010. a processor; 1020. a memory; 1030. an input/output interface; 1040. a communication interface.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Embodiments of the present application are described in detail below with reference to the accompanying drawings.
Along with the continuous expansion of the volume and scale of oil and gas field exploitation, the informatization technology is widely applied in the development of oil and gas fields. In oil gas development, the underground measuring instrument transmits various detection parameter signals in the oil gas well to the ground display control terminal in the whole process, so that the ground display control terminal judges and regulates and controls the working state in the oil gas well in real time.
The optical cable is selected to be used for signal transmission work between the underground transmission device and the ground transmission device due to the excellent transmission characteristic, when signals are transmitted, the underground transmission device completes reconstruction of data information after receiving relevant data information of oil well instruments and equipment, then the reconstructed data information is sent to the first optical modulation module, the first optical modulation module changes the laser intensity according to the converted electric signal frequency and transmits the laser intensity out through the optical cable optical fiber, and after the ground transmission device detects and receives the optical signals, the optical signals are converted into electric signals, and the original information is recovered after analysis processing.
However, since the operating dimensions of conventional optical communication devices generally do not exceed 85 ℃, the internal temperature environment of the well is generally above 150 ℃ and is not functioning properly in the well environment. As shown in fig. 1, the output optical power of the optical fiber is changed by the influence of temperature, resulting in unstable signal transmission.
Based on the foregoing, one or more embodiments of the present application provide an implementation method for transmitting oil well information, where an underground transmission device and a ground transmission device transmit information through an optical cable, the underground transmission device transmits information to the ground transmission device through a first optical modulation module, and the ground transmission device transmits information to the underground transmission device through a second optical modulation module.
It should be noted that, the first optical modulation module and the second optical modulation module may adopt a related technology of laser transmission with mature existing optical fibers, for example, the first optical modulation module includes a first laser 18, a first driving module 13 and a first optical module 15, after the downhole transmission device receives data information of downhole equipment, the first driving module 13 drives the laser to output a modulated optical signal carrying the data information, the modulated optical signal enters the transmission optical cable through the first optical module 15, and similarly, the second optical modulation module may adopt the same related module as the first optical modulation module, which is not repeated herein below.
In some embodiments, as shown in fig. 3, the method for performing oil well information transmission includes:
s1, acquiring the working temperature of a first light modulation module in an oil well.
S2, acquiring a correlation curve of the threshold current of the first light modulation module and the working temperature, obtaining the threshold current at the working temperature according to the correlation curve, and setting a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature.
And S3, adjusting the first driving current of the first light modulation module so that the first driving current is alternately equal to the first current value and the second current value in a period of maintaining the working temperature.
As can be seen from the foregoing, in the implementation method for oil well information transmission provided in this embodiment, after the working temperature of the first optical modulation module is obtained, the threshold current at the working temperature is obtained according to the working temperature, and the first current value and the second current value are set according to the threshold current, and since the first current value and the second current value correspond to the brightness change of the optical signal, the brightness change of the optical signal can be more obvious by setting the first current value and the second current value, which is beneficial to improving the sensitivity of the subsequent received optical signal; in addition, the first current value and the second current value are set according to the threshold current, so that the first optical modulation module can always keep stable optical output power at different working temperatures, unstable extinction ratio of optical signals caused by temperature influence of the first optical modulation module is avoided, and stability of signal transmission in an oil well optical cable is effectively improved.
In some embodiments, in step S1, the first laser 18 of the first optical modulation module is connected to the temperature detection module 11 and the first optical power detection module 14, where the temperature detection module 11 is used to detect the operating temperature of the first laser 18, and the first optical power detection module 14 is used to detect the output optical power of the first laser 18. Here, the first laser 18 is preferably a high temperature-resistant semiconductor laser, which has good physical properties such as low threshold, high operating current, high power, and high junction temperature, and as a specific embodiment, a photodiode is integrated inside the laser to detect the output optical power of the first laser.
In some embodiments, in step S2, the correlation curve between the threshold current of the first light modulation module and the operating temperature is mapped after a plurality of experiments in advance, where the threshold current represents the current value when the first light modulation module is in an ideal operating state at the operating temperature, and the ideal operating state is that the light output power of the first light modulation module can be kept at the normal transmission value without being affected by the operating temperature. Fig. 2 is a schematic diagram of a correlation curve of a threshold current of a laser with an operating temperature, and as can be seen from fig. 2, the threshold current increases synchronously with the increase of the operating temperature, that is, since the light output power of the first light modulation module decreases due to the increase of the temperature in a natural state, the light output power can be kept in a normal operating state without being affected by the temperature by adjusting the operating current.
In some embodiments, in step S3, comprising:
s31, controlling the first light modulation module to adjust the first driving current according to the standard binary data input into the first light modulation module;
wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
In the above embodiment, the input standard binary data is exemplified by a segment 1010 … 1010 of data, wherein 0 corresponds to a first current value, the first light modulation module outputs a light signal as dark light when the first current value is input, 1 corresponds to a second current value, the first light modulation module outputs a light signal as bright light when the second current value is input, the bright light and the dark light of the output light signal are changed alternately by an on-off keying mode, and the segment of standard binary data is used as the adjustment test reference data.
Here, it should be noted that the optical modulation signal is generated by directly driving the laser, that is, in step S3, the set values of the first current value and the second current value corresponding to the standard binary data should tend to the threshold current value, further, the first current value tends to the threshold current value more than the set value of the second current value, so that the first current value is prevented from being set too low, and thus the response time of the first optical modulation module for converting from the dark light into the bright light is prevented from being prolonged, and thus the sensitivity of the optical signal transmission is prevented from being affected.
As a specific embodiment, the set values of the first current value and the second current value may refer to the following formulas:
I 1 =Ia-n，I 2 =I a +m。
in the above formula, I 1 At the first current value,I 2 is a second current value; n is a first coefficient, m is a second coefficient, I a For the threshold current, optionally, n takes a typical value of 5mA and m takes a typical value of 20mA.
The above-described manner of setting the first current value and the second current value is merely a reference, and a value located in the vicinity of the threshold current may be used.
In some embodiments, the standard binary data may be disposed at a forefront of the reconstructed data information in the first optical modulation module, where the reconstructed data information includes the standard binary data, the downhole instrument related data, and the state parameter data of the laser. Here, the state parameter data of the laser includes temperature data detected by the temperature detection module 11, light output power data detected by the power detection module, and the like.
In some embodiments, as shown in fig. 4 and 9, the execution method further includes the steps of:
s311, a first output light power value of the first light modulation module is obtained.
S312, the first coefficient n is increased in response to the first output light power value being greater than the first preset threshold.
And S313, increasing the second coefficient m in response to the first output light power value being smaller than a second preset threshold.
In the above step, optionally, the first preset threshold takes a typical value of 10nw (nanowatt), when it is detected that the first output optical power value of the first optical modulation module is greater than 10nw, this means that the distinction of the first optical modulation module itself for the binary label data 01 (that is, the switching between brightness and darkness) is not obvious at this time, in this case, increasing the first coefficient n can reduce the first current value I1, so that the bright-dark distinction of the first optical modulation module in the 0 state and the 1 state is more obvious, which is beneficial to improving the optical fiber extinction ratio and the sensitivity of the subsequently received optical signal.
Similarly, the second preset threshold value takes a typical value of 30 μw (microwatts), when the first output light power value of the first light modulation module is detected to be smaller than 30 microwatts, the brightness of the first light modulation module is higher at the moment, the distinction of the first light modulation module to binary annotation data 01 (namely, the switching of brightness and darkness) is not obvious, and in this case, the second current value I1 can be increased by increasing the second coefficient m, so that the bright and dark distinction of the first light modulation module in 0 state and 1 state is more obvious, and the optical fiber extinction ratio and the sensitivity of a subsequently received light signal are improved.
It should be noted that, the setting of the first preset threshold and the second preset threshold may be set according to the actual application scenario of the optical cable, which is only illustrated in this embodiment.
In some embodiments, the surface transmission device transmits information to the downhole transmission device through a second optical modulation module, where the second optical modulation module is configured to receive the modulated optical signal of the first optical modulation module, as shown in fig. 5, and the execution method further includes:
s41, obtaining a received light power value of a modulated light signal of the second light modulation module;
s42, calculating a difference value between the received light power value and the first output light power value;
s43, the control optical signal power adjusting module amplifies the received optical signal so that the received optical power value is equal to the first output optical power value.
In the above embodiment, the second optical modulation module has the same structure as the first optical modulation module for emitting laser light, and further includes a second receiving and converting module 26 for receiving the modulated optical signal of the first optical modulation module and a second optical power detecting module 23 for detecting a received optical power value, where the first optical power detecting module 14 of the first optical modulation module obtains a first output optical power value of the first optical modulation module, and the second optical power detecting module 23 obtains a received optical power value after being transmitted to the ground, and when the first output optical power value is greater than the received optical power value, the optical signal power adjusting module 28 increases the amplification factor of the received optical signal; when the first output optical power value is smaller than the received optical power value, the amplification factor of the received optical signal by the optical signal power adjusting module 28 is reduced, and finally, the received optical power value is equal to the first output optical power value, so that the normal transmission effect of the optical cable can be prevented from being influenced by the loss of the optical signal.
In the above embodiment, after the control optical signal power adjustment module adjusts the received optical power value, the method further includes:
s44, controlling the optical conversion module to convert the received optical signal into a digital electrical signal.
S45, receiving the converted digital electric signals, and analyzing and displaying the digital signals.
Here, in the above step, the above operation may be performed using the second reception conversion module 26 in the second optical modulation module.
In some embodiments, the second optical modulation module may, in addition to receiving the modulated optical signal of the first optical modulation module, also transmit the modulated optical signal to the downhole transmission device, and when transmitting the modulated optical signal to the downhole transmission device, as shown in fig. 6, include:
s51, obtaining a second output optical power value of an output optical signal of the second optical modulation module;
s52, calculating the difference value between the first output optical power value and the actual optical power value received by the second optical modulation module to obtain the transmission loss value of the optical signal;
s53, adjusting the second driving current of the second optical modulation module to enable the second output optical power value to be in a preset value so as to meet the requirement of the first optical modulation module on the received optical signal power value.
In the above steps, since loss occurs during the optical cable transmission process, the second optical power detection module 23 of the second optical modulation module is used to detect the second output optical power value, the first optical power detection module 14 of the first optical modulation module is used to detect the actual optical power value, the second output optical power value is necessarily greater than the actual optical power value, and the transmission loss value of the optical signal is obtained by difference, the second driving current of the second driving module 22 in the second optical modulation module is adjusted according to the transmission loss value, so that the second output optical power value is at a preset value, where the specific set value of the preset value can be set according to the requirement of the received optical signal power value of the first optical modulation module, that is, as long as the requirement of the preset value can be met, the received optical signal power value of the first optical modulation module always keeps stable and effective signal transmission effect; the arrangement can ensure the stable reliability of the ground transmission device for transmitting information to the underground transmission device.
It should be noted that, the method of the embodiments of the present application may be performed by a single device, for example, a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the methods of embodiments of the present application, and the devices may interact with each other to complete the methods.
It should be noted that some embodiments of the present application are described above. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Based on the same inventive concept, corresponding to the method of any embodiment, the application further provides an oil well information transmission system, which can be applied to the execution method of any one of the above embodiments, and comprises the following steps:
the temperature detection module 11 is configured to acquire the working temperature of the first optical modulation module in the optical cable;
the first control processing module 12 is configured to obtain a correlation curve of a threshold current and a working temperature of the first light modulation module, obtain the threshold current at the working temperature according to the correlation curve, and set a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature;
the first driving module 13 is configured to adjust the first driving current of the first light modulation module such that the first driving current is alternately equal to the first current value and the second current value for a period of time in which the operating temperature is maintained.
In the above embodiment, specifically, the first driving module 13 is configured to control the first light modulation module to perform the first driving current adjustment according to the standard binary data input thereto; wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present application, for example, the temperature detection module 11, the first control processing module 12, and the first driving module 13 are integrated into the first light modulation module.
The device of the foregoing embodiment is configured to implement the corresponding execution method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
It should be noted that the embodiments of the present application can be further described in the following manner:
the optical cable is internally provided with at least one high-temperature resistant single-mode optical fiber for transmitting signals, and the optical cable is externally provided with a pressure-bearing and tensile structure, so that the optical cable is protected, and the structure of the optical cable and the arrangement form of the single-mode optical fiber can adopt the existing mature structure form.
In some embodiments, as shown in fig. 7, the first optical modulation module located in the downhole transmission device includes a first laser 18, a first driving module 13, a temperature monitoring module, a first optical power detection module 14, a first receiving and converting module 17, a first control and processing module 12, a first interface module 16, and a first optical module 15.
As shown in fig. 8, the second optical modulation module located in the terrestrial transmission device includes a second laser 27, a second driving module 22, a second optical power detecting module 23, a second receiving and converting module 26, a second control and processing module 21, a second interface module 25 and a second optical module 24.
In the above embodiment, the first interface module 16 is used to implement data interaction with the downhole tool, and the second interface module 25 in the second optical modulation module is used to implement data interaction with the surface device or the display control terminal.
The first control processing module 12 receives data information of the downhole instrument through the first interface module 16, drives the first laser 18 to output a modulated optical signal carrying the data information through the first driving module 13, and the modulated optical signal enters the transmission optical cable through the first optical module 15; the first control processing module 12 monitors the actual working temperature and the output optical power of the laser through the temperature detection module 11 and the first optical power detection module 14 respectively, and regulates and controls the first driving current of the laser according to the working temperature and the optical signal power, so that the laser can output stable and reliable modulated optical signals in the high-temperature environment of the oil well.
When the second optical modulation module transmits an optical signal to the first optical modulation module, the first receiving and converting module 17 receives the optical signal input by the first optical module 15 of the second optical modulation module, finishes converting the optical signal to a digital electric signal, and transmits the digital electric signal to the first control processing module 12, and the first control processing module 12 receives corresponding data information and controls and adjusts the downhole instrument.
In some embodiments, the first optical module 15 of the first optical modulation module may use an existing mature optical wavelength division multiplexer or optical circulator, taking the optical circulator 31 as an example, as shown in fig. 10, the first optical module 15 has three ports, namely, a port 1, a port 2 and a port 3, the port 1 is connected with the optical output end of the first laser 18, the port 3 is connected with the input end of the first receiving and converting module 17, the port 1 and the port 2 are connected unidirectionally, and the port 2 is connected unidirectionally with the port 3, so that the optical signal of the first laser 18 enters the transmission optical cable through the ports 1-2 for subsequent transmission work; the optical signal of the ground transmission device input through the port 2 cannot be directly returned to the port 1, but the ports 1 to 3 enter the first receiving conversion module 17 to perform the subsequent work of converting the digital signal.
In some embodiments, the second optical module 24 of the second optical modulation module has four ports, namely, a port a, a port b, a port c and a port d, as shown in fig. 11, where the port a is connected to the optical output end of the second laser 27, the port c and the port d are separated by the beam splitter 32, the port c is connected to the second optical power detection module 23, and the port d is connected to the optical signal power adjustment module 28, so that the optical signal of the second laser 27 enters the transmission cable via the ports a-b for performing the subsequent transmission operation; the optical signal of the downhole transmission device input through the port b cannot be directly returned to the port a, but is divided into two paths, one path enters the second optical power detection module 23 through the port b-port c, the other path enters the optical signal power adjustment module 28 through the port b-port d, the second optical power detection module 23 detects the optical signal power entering the port c to obtain a detection result of a received optical power value, and the second control processing module 21 controls the optical signal power adjustment module 28 to amplify the optical signal by referring to the detection result. Here, the reference basis for the second control processing module 21 to control the optical signal power adjusting module 28 to amplify is the difference between the received optical power value and the first output optical power value.
Through the arrangement, the first light modulation module transmits the modulated light signals to the ground, the modulated light signals emitted by the first laser 18 cannot collide with the relevant laser components of the second light modulation module to affect, the second light modulation module transmits the modulated light signals to the underground, and the modulated light signals emitted by the second laser 27 cannot collide with the relevant laser components of the first light modulation module to affect, so that the working stability of optical cable double-wire signal transmission is effectively improved.
Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any embodiment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor implements the executing method of any embodiment when executing the program.
Fig. 12 is a schematic diagram showing a hardware structure of a more specific electronic device according to the present embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.
The processor 1010 may be implemented as a general-purpose CPU (Central Processing Unit ), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), FPGA (Field-Programmable Gate Array ), or one or more integrated circuits for executing related programs to implement the solutions provided in the embodiments of the present disclosure.
The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage device, dynamic storage device, or the like. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.
The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output modules may be configured as components in the device (not shown in fig. 12) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.
It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.
The electronic device of the foregoing embodiment is configured to implement the corresponding execution method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, corresponding to any of the above embodiments of the method, the present application further provides a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method according to any of the above embodiments.
The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
The storage medium of the foregoing embodiments stores computer instructions for causing the computer to perform the execution method of any of the foregoing embodiments, and has the advantages of the corresponding method embodiments, which are not described herein.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform on which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements and/or the like which are within the spirit and principles of the embodiments are intended to be included within the scope of the present application.
Claims (10)
1. The execution method of oil well information transmission is characterized in that an underground transmission device and a ground transmission device transmit information through an optical cable, and the underground transmission device transmits information to the ground transmission device through a first optical modulation module, and the method comprises the following steps:
acquiring the working temperature of a first light modulation module in an oil well;
acquiring a correlation curve of threshold current and working temperature of a first light modulation module, obtaining the threshold current at the working temperature according to the correlation curve, and setting a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature;
the first driving current of the first light modulation module is regulated so that the first driving current is alternately equal to the first current value and the second current value in a period of time for maintaining the working temperature.
2. The method of claim 1, wherein adjusting the first drive current of the first optical modulation module such that the first drive current is alternately equal to the first current value and the second current value for a period of time in which the operating temperature is maintained comprises:
controlling the first light modulation module to regulate the first driving current according to the standard binary data input into the first light modulation module;
wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
3. The method according to claim 2, wherein an absolute difference between the first current value and the threshold current is set as a first coefficient, and an absolute difference between the second current value and the threshold current is set as a second coefficient, the method comprising:
acquiring a first output light power value of a first light modulation module;
increasing the first coefficient in response to the first output optical power value being greater than a first preset threshold;
and increasing the second coefficient in response to the first output optical power value being less than a second preset threshold.
4. A method of performing well information transmission according to any one of claims 1-3, wherein the surface transmission device transmits information to a downhole transmission device via a second optical modulation module, the second optical modulation module configured to receive the modulated optical signal of the first optical modulation module, the method comprising:
acquiring a received light power value of a modulated light signal of the second light modulation module;
calculating a difference between the received light power value and the first output light power value;
the control optical signal power adjusting module amplifies the received optical signal so that the received optical power value is equal to the first output optical power value.
5. A method of performing well information transmission according to any one of claims 1-3, wherein the surface transmission device transmits information to a downhole transmission device via a second optical modulation module, the first optical modulation module being configured to receive an output optical signal of the second optical modulation module, the method comprising:
acquiring a second output optical power value of an output optical signal of the second optical modulation module;
calculating the difference value between the first output optical power value and the actual optical power value received by the second optical modulation module to obtain the transmission loss value of the optical signal;
and adjusting the second driving current of the second optical modulation module to enable the second output optical power value to be equal to a preset value so as to meet the requirement of the received optical signal power value of the first optical modulation module.
6. The method according to claim 4, wherein the controlling the optical signal power adjustment module amplifies the received optical power value, and then comprises:
controlling the optical conversion module to convert the received optical signal into a digital electrical signal;
and receiving the converted digital electric signals, and analyzing and displaying the digital signals.
7. A well information transmission system to which the method for performing well information transmission according to any one of claims 1 to 6 can be applied, comprising:
the temperature detection module is configured to acquire the working temperature of the first optical modulation module in the optical cable;
the first control processing module is configured to acquire a correlation curve of a threshold current and a working temperature of the first light modulation module, obtain the threshold current at the working temperature according to the correlation curve, and set a first current value smaller than the threshold current and a second current value larger than the threshold current according to the threshold current, wherein the threshold current is a current value when the first light modulation module is in an ideal working state at the working temperature;
and a first driving module configured to adjust a first driving current of the first light modulation module such that the first driving current is alternately equal to the first current value and the second current value for a period of time in which the operating temperature is maintained.
8. The well information transmission system of claim 7, wherein the first drive module is configured to control the first light modulation module to perform the first drive current adjustment according to standard binary data input thereto;
wherein, the standard binary data is a segment of data composed of 01 or 10, 0 corresponds to a first current value, and 1 corresponds to a second current value.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 6 when the program is executed by the processor.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 6.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375099A (en) * | 1999-07-28 | 2002-10-16 | 松下电器产业株式会社 | Laser power control method and optical disk device |
| WO2005027285A1 (en) * | 2003-09-12 | 2005-03-24 | Matsushita Electric Industrial Co., Ltd. | Method for controlling extinction ratios of laser diodes, laser diode driving circuit, integrated circuit thereof, transmitter apparatus, and communication system |
| CN111490579A (en) * | 2020-06-24 | 2020-08-04 | 深圳市力博得科技有限公司 | Wireless charging method, foreign matter detection method, device, base and storage medium |
| CN112054850A (en) * | 2020-08-13 | 2020-12-08 | 深圳市普威技术有限公司 | Optical power adjusting method and device, storage medium and ONU (optical network Unit) equipment |
| CN113258999A (en) * | 2021-06-25 | 2021-08-13 | 武汉联特科技股份有限公司 | Method for calibrating optical power reported by optical receiving module, optical receiving module and medium |
| CN113824493A (en) * | 2020-06-19 | 2021-12-21 | 中兴通讯股份有限公司 | Optical module adjusting method, electronic device, apparatus, system and storage medium |
| CN115276809A (en) * | 2021-04-30 | 2022-11-01 | 华为技术有限公司 | Optical signal acquisition method and related equipment |
| CN115704984A (en) * | 2021-08-12 | 2023-02-17 | 深圳市中科创激光技术有限公司 | Control system and method of light source module and projector equipment |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020172240A1 (en) * | 2001-03-16 | 2002-11-21 | Bongsin Kwark | Modulation current compensation of a laser for fixed extinction ratio using Ith and Ibias |
| RU2280151C1 (en) * | 2004-12-06 | 2006-07-20 | Закрытое Акционерное Общество "Промышленная группа "Инженерные технологии", ЗАО ПГ "Инженерные технологии" | Automatic control method and device for oil production process |
| JP4341708B2 (en) * | 2007-08-13 | 2009-10-07 | オムロン株式会社 | Semiconductor laser driving device, semiconductor laser driving method, optical transmission device, optical wiring module, and electronic apparatus |
| CN202634441U (en) * | 2011-12-30 | 2012-12-26 | 武汉华工正源光子技术有限公司 | Optical power and extinction ratio control system for light emission module |
| CN104373120B (en) * | 2014-11-28 | 2017-01-25 | 中国石油天然气集团公司 | Control system and control method of logging drilling sidewall coring tool |
| CN106375021B (en) * | 2016-08-22 | 2019-06-04 | 青岛海信宽带多媒体技术有限公司 | A kind of method and optical module adjusting optical module extinction ratio |
| CN108599857B (en) * | 2018-04-03 | 2019-09-10 | 武汉电信器件有限公司 | A kind of method and device promoting optical module extinction ratio stability |
| JP7092999B2 (en) * | 2018-05-15 | 2022-06-29 | ミツミ電機株式会社 | Control device, optical scanning device, display device and control method |
| CN110284875A (en) * | 2019-06-13 | 2019-09-27 | 中国石油化工股份有限公司 | A kind of Diagnosing The Faults of Esp ' method and apparatus based on current parameters |
| CN211857313U (en) * | 2020-05-19 | 2020-11-03 | 森诺科技有限公司 | Intelligent adjusting device for electric heating of oil well |
| CN112104424B (en) * | 2020-09-03 | 2022-04-01 | 南京捷澳德信息科技有限公司 | High-temperature extinction ratio optimization method for 5G forward-transmission industrial-grade optical module |
| CN113686433B (en) * | 2021-08-23 | 2022-11-18 | 长飞光纤光缆股份有限公司 | Photoelectric detector and erbium-doped optical fiber amplifier based on dark current compensation |
| CN115288665A (en) * | 2022-09-06 | 2022-11-04 | 合力（天津）能源科技股份有限公司 | Underground high-temperature-resistant control system |
-
2023
- 2023-03-13 CN CN202310233384.0A patent/CN115941055B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1375099A (en) * | 1999-07-28 | 2002-10-16 | 松下电器产业株式会社 | Laser power control method and optical disk device |
| WO2005027285A1 (en) * | 2003-09-12 | 2005-03-24 | Matsushita Electric Industrial Co., Ltd. | Method for controlling extinction ratios of laser diodes, laser diode driving circuit, integrated circuit thereof, transmitter apparatus, and communication system |
| CN113824493A (en) * | 2020-06-19 | 2021-12-21 | 中兴通讯股份有限公司 | Optical module adjusting method, electronic device, apparatus, system and storage medium |
| CN111490579A (en) * | 2020-06-24 | 2020-08-04 | 深圳市力博得科技有限公司 | Wireless charging method, foreign matter detection method, device, base and storage medium |
| CN112054850A (en) * | 2020-08-13 | 2020-12-08 | 深圳市普威技术有限公司 | Optical power adjusting method and device, storage medium and ONU (optical network Unit) equipment |
| CN115276809A (en) * | 2021-04-30 | 2022-11-01 | 华为技术有限公司 | Optical signal acquisition method and related equipment |
| CN113258999A (en) * | 2021-06-25 | 2021-08-13 | 武汉联特科技股份有限公司 | Method for calibrating optical power reported by optical receiving module, optical receiving module and medium |
| CN115704984A (en) * | 2021-08-12 | 2023-02-17 | 深圳市中科创激光技术有限公司 | Control system and method of light source module and projector equipment |
Non-Patent Citations (2)
| Title |
|---|
| Siemens.R2-010911 "Proposed draft CR to 25.331 on Clarification on omitted Primary CPICH info/Primary CCPCH info in reconfiguration messages".3GPP tsg_ran\WG2_RL2.2001,(第TSGR2_20期),全文. * |
| 具有连续自动温度补偿功能的10Gb/s光收发模块;胡俊豪;周本军;李欢;罗洪;;半导体光电(第02期);全文 * |
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