CN109141207B - Setting method, setting device and setting equipment of linear variable differential transformer - Google Patents
Setting method, setting device and setting equipment of linear variable differential transformer Download PDFInfo
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Abstract
The invention discloses a setting method, a setting device, setting equipment and a computer readable storage medium of a linear variable differential transformer, wherein the method comprises the steps of when L VDT of the linear variable differential transformer needs to be set, if the setting needed at this time is not the first setting of L VDT, obtaining L VDT current machine code value, judging whether the difference value of the current machine code value and standard machine code value is within a preset error range, if so, determining that L VDT does not need to be set, if not, determining that the current machine code value and the standard machine code value respectively correspond to L VDT positions, adjusting L VDT from the corresponding position of the current machine code value to the corresponding position of the standard machine code value, and completing the setting of L VDT, wherein the standard machine code value is L VDT machine code value after the first setting is completed.
Description
Technical Field
The present invention relates to the technical field of linear variable differential transformers, and more particularly, to a setting method, apparatus, device and computer readable storage medium for a linear variable differential transformer.
Background
L VDT (L inner Variable Differential Transformer) is a linear Variable Differential Transformer, belongs to a linear displacement sensor, can be used for measuring the elongation, vibration frequency, amplitude, object thickness degree, expansion degree and other accurate data of an object, and is widely applied to the detection of the opening degree of a turbine valve position, L VDT is composed of an iron core, three coils and a shell, as shown in figure 1, wherein e1 is an exciting coil, e21 and e22 are two feedback coils, the iron core is rigidly connected with a piston rod of an oil-operated machine (the stroke of the piston rod corresponds to the opening degree of the turbine main valve position), and when the piston rod of the oil-operated machine moves, the e21 and e22 voltages change to indicate the opening degree of the main valve position.
According to practical application, L VDT is set before a turbine is started, specifically, the setting of L VDT is that the position of L VDT (namely the position of a L VDT iron core) is adjusted, so that the machine code value of L VDT reaches the required machine code value, and the operation is very important, however, in the operation process, due to the influence of factors such as mechanical vibration, environmental corrosion and the like, the position of L VDT may deviate, but the deviation cannot be calibrated in the operation process, and the setting can be reset only after the next start-up or the equipment is in fault shutdown, even though the position of L VDT does not deviate in the operation process, in the key equipment maintenance process, the L VDT is dismantled to carry out operations such as sensor, inspection, replacement and the like, the operation brings position deviation in installation, and brings great risk to the next start-up.
In summary, the technical scheme for realizing L VDT tuning in the prior art has the problems of high professional requirement on workers and poor reliability.
Disclosure of Invention
The invention aims to provide a setting method, a setting device, setting equipment and a computer readable storage medium of a linear variable differential transformer, which can solve the problems of high professional requirement on workers and poor reliability in the technical scheme of realizing L VDT setting in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a setting method of a linear variable differential transformer comprises the following steps:
when the linear variable differential transformer L VDT needs to be adjusted, if the adjustment needed at this time is not the first adjustment of the L VDT, acquiring the current machine code value of the L VDT;
judging whether the difference value between the current machine code value and the standard machine code value is within a preset error range, if so, determining that L VDT does not need to be set, if not, determining the positions of L VDT corresponding to the current machine code value and the standard machine code value respectively, adjusting the L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and completing the setting of the L VDT, wherein the standard machine code value is the machine code value of L VDT after the first setting is completed.
Preferably, the determining that the current machine code value and the standard machine code value respectively correspond to the L VDT location includes:
and acquiring a relation curve which is obtained by pre-fitting and represents the correspondence between the L VDT machine code value and the L VDT position, and obtaining the positions of the current machine code value and the standard machine code value which respectively correspond to the L VDT based on the relation curve.
Preferably, after the L VDT is adjusted from the current machine code value corresponding position to the standard machine code value corresponding position, the method further includes:
returning to executing the step of acquiring the current machine code value of the L VDT until the step of acquiring the current machine code value of the L VDT is executed for a preset number of times.
Preferably, the method further comprises the following steps:
and if the step of obtaining the current machine code value of the L VDT is executed for preset times and the difference value between the current machine code value and the standard machine code value is determined not to be within a preset error range, outputting an error prompt.
A setting device of a linear variable differential transformer, comprising:
the acquisition module is used for acquiring the current machine code value of the L VDT if the setting required at this time is not the first setting of the L VDT when the linear variable differential transformer L VDT needs to be set;
the judging module is used for judging whether the difference value between the current machine code value and the standard machine code value is within a preset error range, if so, determining that L VDT does not need to be set, if not, determining the positions of L VDT corresponding to the current machine code value and the standard machine code value respectively, adjusting the L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and completing setting of L VDT, wherein the standard machine code value is the machine code value of L VDT after the first setting is completed.
Preferably, the judging module includes:
and the determining unit is used for acquiring a relation curve which is obtained by pre-fitting and represents the corresponding relation between the L VDT machine code value and the L VDT position, and obtaining the positions of the current machine code value and the standard machine code value which respectively correspond to the L VDT based on the relation curve.
Preferably, the method further comprises the following steps:
and the circulation module is used for indicating the acquisition module to execute the step of acquiring the current machine code value of the L VDT after the L VDT is adjusted from the position corresponding to the current machine code value to the position corresponding to the standard machine code value until the step of acquiring the current machine code value of the L VDT executed by the acquisition module reaches a preset number.
Preferably, the method further comprises the following steps:
and the prompting module is used for outputting an error prompt if the step of acquiring the current machine code value of the L VDT by the acquiring module reaches a preset number of times and the judging module determines that the difference value between the current machine code value and the standard machine code value is not within a preset error range.
A setting device of a linear variable differential transformer, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for tuning a linear variable differential transformer as described in any one of the above when executing the computer program.
A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method for tuning a linear variable differential transformer according to any of the preceding claims.
The invention provides a setting method, a setting device, equipment and a computer readable storage medium of a linear variable differential transformer, wherein the method comprises the steps of obtaining a current machine code value of L VDT when the linear variable differential transformer L VDT needs to be set, judging whether the difference value of the current machine code value and a standard machine code value is within a preset error range, if so, determining that the L VDT does not need to be set, if not, determining that the current machine code value and the standard machine code value respectively correspond to the position of L2 VDT, adjusting the L VDT from the corresponding position of the current machine to the corresponding position of the standard machine, completing the setting of the L VDT, wherein the machine code value is L VDT after the standard machine code value is completed, if the setting of the code value is not consistent to the corresponding position of the standard machine code value 5966, adjusting the 856 VDT is needed, the corresponding code value is not required to the corresponding position of the standard machine code value, and the reliability of the VDT is not required to be improved by a special VDT 3648, and the VDT is not required to be set for the initial setting of the VDT, and the VDT, thus the initial setting of the VDT is not required for the VDT, and the VDT, the initial setting of the VDT, and the initial setting of the VDT is achieved by a technical scheme provided by a technical scheme is that the initial setting personnel, and the initial setting of the VDT, and the method, wherein the method, and the method, the.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of L VDT in the prior art;
fig. 2 is a flowchart of a setting method for a linear variable differential transformer according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a tuning device of a linear variable differential transformer according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a flowchart of a tuning method for a linear variable differential transformer according to an embodiment of the present invention is shown, where the tuning method includes:
s11, when the linear variable differential transformer L VDT needs to be adjusted, if the adjustment needed at this time is not the first adjustment of L VDT, the current machine code value of L VDT is obtained.
It should be noted that the execution subject of the setting method for the linear variable differential transformer provided by the embodiment of the present invention may be a corresponding setting device, and the setting of L VDT includes any situation described in the prior art that requires setting of L VDT, if L VDT needs to be set, it is determined before the setting whether the setting that needs to be performed this time is the first setting of L VDT, in this application, the first setting of L VDT refers to the first setting of L VDT on the device applied this time, if the determination result is yes, it is sufficient to set L VDT in the prior art, if the determination result is no, a current machine code value of L VDT is obtained, and if it is determined that the setting of L t is completed, operations such as startup may be performed.
And S12, judging whether the difference value between the current machine code value and the standard machine code value is within a preset error range, if so, determining that L VDT does not need to be set, if not, determining the positions of the L VDT corresponding to the current machine code value and the standard machine code value respectively, adjusting the L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and completing the setting of L VDT, wherein the standard machine code value is L VDT after the first setting is completed.
The method includes that standard machine code values are machine code values after L VDT is firstly adjusted, positions of L VDT in the application refer to positions of an iron core of L VDT, positions of L VDT correspond to machine code values of L VDT, therefore after a machine code value of L VDT is determined, a position of L VDT corresponding to the machine code value is determined based on the corresponding relation, namely positions of L VDT corresponding to the current machine code value and the standard machine code value are determined based on the corresponding relation, in addition, a preset error range can be determined according to actual needs, if a difference value between the current machine code value and the standard machine code value is within a preset error range, a rod dropping phenomenon of L VDT is considered to not occur, namely, a position of L T meets requirements, therefore, no adjustment of L VDT needs to be performed, if a difference value between the current machine code value and the standard machine code value is not within a preset error range, an adjustment L phenomenon, namely, a corresponding position adjustment of a rod dropping phenomenon of 367T is considered to be performed, therefore, the corresponding position adjustment of L VDT is determined, and a corresponding machine code value is determined, and a corresponding operation distance between a corresponding machine code value of a corresponding position of a VDT is automatically performed from a VDT, and a VDT corresponding to a VDT, and a VDT corresponding operation standard VDT is achieved by a VDT, and a distance from a VDT, and a VDT is automatically performed after the operation is performed from a VDT, and a VDT is performed by a VDT, and a.
It should be noted that the tuning method for the linear variable differential transformer provided in the embodiment of the present invention may be implemented based on an FPGA (Field Programmable Gate Array), so as to implement parallelism and high-speed execution of steps.
According to the technical scheme, before L VDT needs to be set, whether the setting is the first setting is judged, if not, whether the lever dropping phenomenon occurs in L VDT is judged based on the current machine code value of L VDT and the standard machine code value obtained after L VDT is first set, and when the lever dropping occurs in L VDT, the position of L VDT is adjusted to the position corresponding to the standard machine code value from the position corresponding to the current machine code value, so that L VDT setting is achieved, compared with the problem that in the prior art, the tedious setting steps need to be achieved by workers during each setting, operation is simple, professional personnel are not needed to complete the setting of L VDT, and the position of L T after setting is the reliable position determined after the first setting, whether the corresponding machine code value meets the field requirements or not is not needed to be considered, reliability of the setting is improved, and the risk that VDT position is inconsistent due to L VDT is reduced.
In addition, setting is not needed when the fact that the lever dropping phenomenon of the L VDT does not occur is determined, so that the setting times of the L VDT are greatly reduced, and the use efficiency of the L VDT is improved.
The setting method for the linear variable differential transformer provided by the embodiment of the invention determines the positions of L VDT corresponding to the current machine code value and the standard machine code value respectively, and can comprise the following steps:
and acquiring a relation curve which is obtained by pre-fitting and represents the corresponding relation between the machine code value of L VDT and the position of L VDT, and obtaining the positions of L VDT respectively corresponding to the current machine code value and the standard machine code value based on the relation curve.
It should be noted that, when L VDT is first completed, positions of multiple L VDTs may be specified according to actual needs, and machine code values corresponding to each specified position are recorded, and then a relationship curve is drawn based on these data, and a corresponding relationship between a L VDT position and a machine code value may be determined by the relationship curve, so that when a current machine code value or a standard machine code value is determined, a corresponding point may be found on the relationship curve, and the corresponding position is a position of a L VDT corresponding to the current machine code value or the standard machine code value, and on the premise that two positions are determined, how to adjust the L VDT from one position to another position by adjusting the VDT may be directly known, which is consistent with an implementation principle of a corresponding technical scheme in the prior art, and is not described herein again.
In addition, the relationship curve can be divided into a plurality of relationship sub-curves, wherein the current machine code value and the machine code value with the difference value between the current machine code value and the standard machine code value in the preset error range correspond to the same relationship sub-curve (which can be a standard sub-curve), therefore, if the current machine code value is on the standard sub-curve, the difference value between the current machine code value and the standard machine code value is determined to be in the preset error range, otherwise, the difference value between the current machine code value and the standard machine code value is determined not to be in the preset error range, and then the position corresponding to the current machine code value is found from other relationship sub-curves, and the position of L VDT is correspondingly adjusted, thereby facilitating the judgment of whether the errors of the standard machine code value and the current machine code value are in.
In the setting method of the linear variable differential transformer provided in the embodiment of the present invention, after the L VDT is adjusted from the current machine code value corresponding position to the standard machine code value corresponding position, the method may further include:
the step of obtaining L the current machine code value of the VDT is returned to be executed until the step of obtaining L the current machine code value of the VDT is executed for a preset number of times.
It should be noted that after L VDT position adjustment is achieved, in order to ensure that L VDT position can meet requirements, obtaining L VDT current machine code value and subsequent steps can be performed again, so that L VDT adjustment reliability is ensured, however, if L VDT cannot reach the required machine code value due to problems such as a L VDT corresponding device failure, obtaining L VDT current machine code value and subsequent steps are performed too much, which is wasteful, therefore, in the present application, a preset number of times is set according to actual needs, if the number of times of performing the step of obtaining L VDT current machine code value reaches the preset number of times, even if the difference between L VDT current machine code value and standard machine code value is not within a preset range, related steps are not performed again, and useless waste of resources is avoided.
The setting method for the linear variable differential transformer provided by the embodiment of the invention can further comprise the following steps:
and if the step of obtaining L the current machine code value of the VDT is executed for the preset times and the difference value between the current machine code value and the standard machine code value is determined not to be within the preset error range, outputting an error prompt.
If the step of obtaining L VDT's current machine code value is executed for the preset number of times, and the difference value between the current machine code value and the standard machine code value is determined not to be within the preset error range, it can be considered that L VDT corresponding equipment fails or L VDT cannot reach the required machine code value due to other reasons, an error prompt is output at the moment, so as to indicate external workers to perform operations such as inspection and maintenance, it is ensured that the workers can timely know the running condition of L VDT and then execute corresponding measures, and effective running of L VDT is ensured.
An embodiment of the present invention further provides a setting device for a linear variable differential transformer, as shown in fig. 3, the setting device may include:
the obtaining module 11 is configured to, when the linear variable differential transformer L VDT needs to be adjusted, obtain a current machine code value of L VDT if the adjustment that needs to be performed this time is not the first adjustment of L VDT;
the judging module 12 is configured to judge whether a difference value between a current machine code value and a standard machine code value is within a preset error range, determine that L VDT does not need to be set if the difference value is within the preset error range, determine positions where the current machine code value and the standard machine code value respectively correspond to L VDT if the difference value is within the preset error range, adjust L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and complete setting of L VDT, where the standard machine code value is the machine code value of L VDT after the first setting is completed.
In the tuning apparatus for a linear variable differential transformer according to an embodiment of the present invention, the determining module may include:
and the determining unit is used for acquiring a relation curve which is obtained by pre-fitting and represents the corresponding relation between the machine code value of L VDT and the position of L VDT, and obtaining the positions of L VDT respectively corresponding to the current machine code value and the standard machine code value based on the relation curve.
The setting device for the linear variable differential transformer provided by the embodiment of the invention can further comprise:
and the circulation module is used for indicating the acquisition module to execute the step of acquiring the current machine code value of L VDT after the L VDT is adjusted from the corresponding position of the current machine code value to the corresponding position of the standard machine code value until the acquisition module executes the step of acquiring the current machine code value of L VDT for a preset number of times.
The setting device for the linear variable differential transformer provided by the embodiment of the invention can further comprise:
and the prompting module is used for outputting an error prompt if the step of acquiring L the current machine code value of the VDT by the acquiring module reaches the preset times and the judging module determines that the difference value between the current machine code value and the standard machine code value is not within the preset error range.
An embodiment of the present invention further provides a setting device for a linear variable differential transformer, which may include:
a memory for storing a computer program;
a processor for implementing the steps of the method for tuning a linear variable differential transformer as described in any one of the above when executing a computer program.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the setting method of the linear variable differential transformer can be implemented.
It should be noted that for the description of the relevant parts of the setting device, the apparatus and the computer readable storage medium for the linear variable differential transformer provided in the embodiment of the present invention, reference is made to the detailed description of the corresponding parts in the setting method for the linear variable differential transformer provided in the embodiment of the present invention, and details are not repeated here. In addition, parts of the technical solutions provided in the embodiments of the present invention that are consistent with the implementation principles of the corresponding technical solutions in the prior art are not described in detail, so as to avoid redundant description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A setting method of a linear variable differential transformer is characterized by comprising the following steps:
when the linear variable differential transformer L VDT needs to be adjusted, if the adjustment needed at this time is not the first adjustment of the L VDT, acquiring the current machine code value of the L VDT;
judging whether the difference value between the current machine code value and the standard machine code value is within a preset error range, if so, determining that L VDT does not need to be set, if not, determining the positions of the L VDT corresponding to the current machine code value and the standard machine code value respectively, adjusting the L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and completing the setting of the L VDT, wherein the standard machine code value is the machine code value of L VDT after the first setting is completed;
determining the positions of the current machine code value and the standard machine code value which respectively correspond to the L VDT comprises the following steps:
obtaining a relation curve which is obtained by pre-fitting and represents the corresponding relation between the L VDT machine code value and the L VDT position, and obtaining the positions of the current machine code value and the standard machine code value which respectively correspond to the L VDT based on the relation curve;
the setting method of the linear variable differential transformer is realized based on an FPGA.
2. The method as claimed in claim 1, wherein after adjusting the L VDT from the current machine code value corresponding location to the standard machine code value corresponding location, further comprising:
returning to executing the step of acquiring the current machine code value of the L VDT until the step of acquiring the current machine code value of the L VDT is executed for a preset number of times.
3. The method of claim 2, further comprising:
and if the step of obtaining the current machine code value of the L VDT is executed for preset times and the difference value between the current machine code value and the standard machine code value is determined not to be within a preset error range, outputting an error prompt.
4. A setting device of a linear variable differential transformer is characterized by comprising:
the acquisition module is used for acquiring the current machine code value of the L VDT if the setting required at this time is not the first setting of the L VDT when the linear variable differential transformer L VDT needs to be set;
the judging module is used for judging whether the difference value between the current machine code value and the standard machine code value is within a preset error range, if so, determining that the L VDT does not need to be set, if not, determining the positions of the L VDT corresponding to the current machine code value and the standard machine code value respectively, adjusting the L VDT from the position corresponding to the current machine code value to the position corresponding to the standard machine code value, and completing the setting of the L VDT, wherein the standard machine code value is the machine code value of the L VDT after the first setting is completed;
the judging module comprises:
a determining unit, configured to obtain a relationship curve obtained through pre-fitting and representing a correspondence between the L VDT machine code value and the L VDT position, and obtain positions, corresponding to the L VDT, of the current machine code value and the standard machine code value, respectively, based on the relationship curve;
the setting method of the linear variable differential transformer is realized based on an FPGA.
5. The apparatus of claim 4, further comprising:
and the circulation module is used for indicating the acquisition module to execute the step of acquiring the current machine code value of the L VDT after the L VDT is adjusted from the position corresponding to the current machine code value to the position corresponding to the standard machine code value until the step of acquiring the current machine code value of the L VDT executed by the acquisition module reaches a preset number.
6. The apparatus of claim 5, further comprising:
and the prompting module is used for outputting an error prompt if the step of acquiring the current machine code value of the L VDT by the acquiring module reaches a preset number of times and the judging module determines that the difference value between the current machine code value and the standard machine code value is not within a preset error range.
7. A setting device of a linear variable differential transformer, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method of tuning a linear variable differential transformer according to any of claims 1 to 3 when executing said computer program.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of tuning a linear variable differential transformer according to any one of claims 1 to 3.
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| CN201811051560.4A CN109141207B (en) | 2018-09-10 | 2018-09-10 | Setting method, setting device and setting equipment of linear variable differential transformer |
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| CN105588508A (en) * | 2016-03-16 | 2016-05-18 | 上海筑邦测控科技有限公司 | Method for performing displacement measurement by using LVDT and sensor iron core mounting structure |
| CN105865318A (en) * | 2016-03-30 | 2016-08-17 | 杭州和利时自动化有限公司 | Non-phase-sensitive digital demodulation system and method applied to LVDT displacement sensor |
| CN205785051U (en) * | 2016-06-22 | 2016-12-07 | 鲍亚子 | A kind of LVDT formula displacement transducer |
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