CN114993188A - Length measuring machine capable of solving temperature influence - Google Patents
Length measuring machine capable of solving temperature influence Download PDFInfo
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- CN114993188A CN114993188A CN202210593729.9A CN202210593729A CN114993188A CN 114993188 A CN114993188 A CN 114993188A CN 202210593729 A CN202210593729 A CN 202210593729A CN 114993188 A CN114993188 A CN 114993188A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
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Abstract
The invention discloses a length measuring machine for solving the temperature influence, which relates to the technical field of length measuring machines and comprises a grating ruler unit and a guide rail unit; the grating ruler unit and the guide rail unit are arranged on the base unit of the length measuring machine; the guide rail unit is provided with a fixed measuring end unit and a movable measuring end unit; the mobile measuring end unit moves back and forth on the guide rail unit; the mobile measuring end unit is provided with a digital display control system, the digital display control system is used for constructing a target measuring training sample according to the measuring record of the length measuring machine, and the training is based on a machine learning method to obtain a temperature compensation model M; and the actual measurement size is compensated according to the temperature compensation model M, so that the displayed size data is compensated, the workpiece does not need to be measured at each time, manual calculation is replaced, the measurement errors caused by different temperature changes of the length measuring machine and the workpiece are well solved, the use is convenient, and mistakes are avoided.
Description
Technical Field
The invention relates to the technical field of length measuring machines, in particular to a length measuring machine capable of solving the temperature influence.
Background
In many plants that do not have constant temperature conditions in the plant, the length measuring machine changes with temperature, resulting in a change in the measured dimensional references provided. The length measuring machine and the workpiece are influenced by different temperatures due to the influence of different materials and other factors. It can cause the measurement result to be affected by temperature to generate large errors.
In order to solve the problem that the temperature affects the measurement precision, some manufacturers take the following measures: the temperature of the work piece is not constant, but the temperature of the work piece is not constant in the workshop. In this case, the workpiece and the length measuring machine are not in the same temperature system, and the workpiece and the length measuring machine have a temperature difference, so that the workpiece cannot be directly used. The method is theoretically feasible, but the workpiece needs to be measured in each measurement, manual conversion is needed, and the method is complicated and easy to make mistakes; based on the defects, the invention provides a length measuring machine for solving the temperature influence.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a length measuring machine for solving the temperature influence, which aims to eliminate the difference between the length measuring machine and a workpiece at different temperatures and reduce the influence of temperature change on the measurement precision.
In order to achieve the above object, an embodiment according to a first aspect of the present invention provides a length measuring machine that solves the temperature effect, including a grating scale unit and a guide rail unit; the grating ruler unit and the guide rail unit are arranged on the base unit of the length measuring machine;
a fixed measuring end base unit is arranged at the lower part of the fixed measuring end unit, and a fixed measuring rod supporting block unit is arranged at one side of the fixed measuring end base unit; the guide rail unit is also provided with a mobile measuring end unit;
the mobile measuring end unit is provided with a digital display control system, and the digital display control system is used for carrying out temperature compensation on the actual measuring size obtained by measurement of the mobile measuring end unit to obtain a compensation measuring size; transmitting the compensation measurement size to a display screen for real-time display;
the digital display control system comprises a temperature acquisition unit, an information recording unit, an information arrangement unit, a temperature compensation unit and a display screen; the information recording unit is used for recording the measurement record of the length measuring machine and transmitting the measurement record to the information sorting unit;
the information sorting unit is used for receiving the measurement records of the length measuring machine, sorting the measurement records, constructing a target measurement training sample, and obtaining a temperature compensation model M based on a machine learning method in training; and transmitting the temperature compensation model M to a temperature compensation unit; and the temperature compensation unit is used for compensating the actual measurement size according to the temperature compensation model M to obtain a compensation measurement size.
Further, the specific training process of the temperature compensation model M is as follows:
establishing an error reverse propagation neural network model; the error reverse propagation neural network model at least comprises a hidden layer;
dividing a target measurement training sample into a training set, a test set and a check set according to a set proportion;
and training, testing and verifying the error reverse propagation neural network through the training set, the testing set and the verifying set, and marking the trained error reverse propagation neural network as a temperature compensation model M.
Further, the specific compensation steps of the temperature compensation unit are as follows:
acquiring an actual measurement size measured by the mobile measurement end unit; inputting various environmental parameter values during measurement into a temperature compensation model M to obtain a temperature compensation coefficient;
compensating the actual measurement size according to the temperature compensation coefficient to obtain a compensation measurement size; and the temperature compensation unit is used for transmitting the compensation measurement size to the display screen for real-time display.
Further, the measurement record comprises various environmental parameter values, actual measurement sizes and target measurement sizes during measurement; the temperature acquisition unit is used for acquiring various environmental parameter values during measurement; the various environmental parameter values comprise the temperature of the length measuring machine, the temperature of the workpiece and the current environmental temperature.
Furthermore, a movable measuring end base unit is installed on the lower portion of the movable measuring end unit, a movable measuring rod supporting block unit is arranged on one side of the movable measuring end base unit, and the movable measuring end unit moves back and forth on the guide rail unit.
Further, the specific measurement steps of moving the measurement end unit are as follows:
firstly, slowly pushing the mobile measuring end unit to the fixed measuring end unit to make the mobile measuring end unit contact with the fixed measuring end unit, checking size data displayed by a digital display control system and setting the size data to be 0;
slowly pushing the mobile measuring end unit, observing the digital display control system, and finely adjusting when the digital display control system approaches the target measuring size to display the target measuring size; and locking the movable measuring end unit, putting the measuring rod for taking numbers, adjusting the large needle of the dial indicator of the measuring rod to be 0 position, and recording the position of the small needle to obtain the actual measuring size.
Further, the digital display control system further comprises a model optimization unit, wherein the model optimization unit is used for obtaining a compensation measurement size, comparing the compensation measurement size with a target measurement size, evaluating a result through comparison, and then carrying out real-time feedback optimization on the temperature compensation model M according to an evaluation result.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, a temperature compensation unit is introduced into a digital display control system, training is carried out based on a machine learning method according to actually verified data, temperature compensation coefficients of a length measuring machine system and a workshop workpiece system are obtained through analysis, compensated into an actually measured size, and automatically calculated, so that the size data which are displayed are compensated, the workpiece does not need to be measured at each measurement, manual calculation is replaced, measurement errors caused by different temperature changes of the length measuring machine and the workpiece are well solved, the use is convenient, and errors are avoided;
2. the model optimization unit is used for obtaining the compensation measurement size, comparing the compensation measurement size with the target measurement size, evaluating the result through comparison, and then performing real-time feedback optimization on the temperature compensation model M according to the evaluation result, so that the model precision is further improved, and the measurement error caused by temperature is avoided.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a length measuring machine for solving the temperature influence.
FIG. 2 is a system block diagram of the digital display control system of the present invention.
In the figure: 1. a grating ruler; 2. a guide rail; 3. a fixed end measuring rod supporting block; 4. a base of the length measuring machine; 5. fixing the measuring end; 6. fixing a measuring end base; 7. a digital display control system; 8. moving the measuring end; 9. moving the measuring end base; 10. and a movable end measuring rod supporting block.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to 2, a length measuring machine for solving the temperature influence comprises a grating ruler 1 and a guide rail 2; the grating ruler 1 and the guide rail 2 are arranged on a length measuring machine base 4, a fixed measuring end 5 is arranged on the guide rail 2, a fixed measuring end base 6 is arranged on the lower portion of the fixed measuring end 5, and a fixed measuring rod supporting block 3 is arranged on one side of the fixed measuring end base 6;
the measuring device is characterized in that a movable measuring end 8 is further installed on the guide rail 2, a movable measuring end base 9 is installed on the lower portion of the movable measuring end 8, a movable end measuring rod supporting block 10 is arranged on one side of the movable measuring end base 9, the movable measuring end 8 moves back and forth on the guide rail 2, and a digital display control system 7 is arranged on the movable measuring end 8 and used for displaying current size data in real time.
The using method of the length measuring machine comprises the following steps:
firstly, slowly pushing the movable measuring end 8 to the fixed measuring end 5 to make the movable measuring end contact with the fixed measuring end, checking size data displayed by the digital display control system 7 and setting the size data to be 0;
then, slowly pushing the movable measuring end 8, observing the digital display control system 7, and finely adjusting when the size (target measuring size) to be measured is close to the size (target measuring size) to be measured so that the digital display control system 7 displays the size (target measuring size) to be measured; at the moment, the movable measuring end 8 is locked, a measuring rod is placed for taking a number, a large needle of a dial indicator of the measuring rod is adjusted to be 0 position, and the position of a small needle is recorded to obtain an actual measuring size;
the digital display control system 7 comprises a temperature acquisition unit, an information recording unit, an information arrangement unit, a temperature compensation unit and a display screen;
the temperature acquisition unit is used for acquiring various environmental parameter values during measurement; the various environmental parameter values comprise the temperature of the length measuring machine, the temperature of a workpiece and the current environmental temperature;
the information recording unit is used for recording the measurement record of the length measuring machine and transmitting the measurement record to the information sorting unit, and the measurement record comprises various environmental parameter values, actual measurement size and target measurement size during measurement;
the information sorting unit is used for receiving the measurement records of the length measuring machine, sorting the measurement records, constructing a target measurement training sample, and training based on a machine learning method to obtain a temperature compensation model M; the method specifically comprises the following steps:
establishing an error reverse propagation neural network model; the error reverse propagation neural network model at least comprises a hidden layer;
dividing a target measurement training sample into a training set, a test set and a check set according to a set proportion;
training, testing and checking the error reverse propagation neural network through a training set, a testing set and a checking set, and marking the trained error reverse propagation neural network as a temperature compensation model M;
the information sorting unit is used for transmitting the temperature compensation model M to the temperature compensation unit, and the temperature compensation unit is used for compensating the actual measurement size according to the temperature compensation model M; the method specifically comprises the following steps:
acquiring an actual measurement size measured by the mobile measuring end 8; inputting various environmental parameter values during measurement into a temperature compensation model M to obtain a temperature compensation coefficient;
compensating the actual measurement size according to the temperature compensation coefficient to obtain a compensation measurement size; the temperature compensation unit is used for transmitting the compensation measurement size to the display screen for real-time display;
the invention aims to solve the problems that under the condition that the whole processing workshop is not completely constant in temperature, a temperature compensation unit is introduced into a digital display control system 7, training is carried out based on a machine learning method according to actually verified data, the temperature compensation coefficients of a length measuring machine system and a workshop workpiece system are obtained through analysis, the temperature compensation coefficients are compensated into an actual measurement size, and calculation is automatically carried out, so that the displayed size data is compensated, the workpiece does not need to be measured at each measurement, manual calculation is replaced, the measurement errors caused by different temperature changes of the length measuring machine and the workpiece are well solved, the use is convenient, and errors are avoided;
in this embodiment, the digital display control system 7 further includes a model optimization unit, where the model optimization unit is configured to obtain a compensation measurement size, compare the compensation measurement size with a target measurement size, evaluate a result by comparison, and then perform real-time feedback optimization on the temperature compensation model M according to the evaluation result.
The working principle of the invention is as follows:
a length measuring machine for solving the temperature influence, when working, firstly, a mobile measuring end 8 is slowly pushed to a fixed measuring end 5 to be contacted, size data displayed by a digital display control system 7 is checked and set to be 0; then slowly pushing the movable measuring end 8, observing the digital display control system 7, and finely adjusting when the size (target measuring size) to be measured is close to the size (target measuring size) to be measured, so that the digital display control system 7 displays the size (target measuring size) to be measured; at the moment, the movable measuring end 8 is locked, a measuring rod is placed for taking a number, a large needle of a dial indicator of the measuring rod is adjusted to be 0 position, and the position of a small needle is recorded to obtain an actual measuring size; the information recording unit is used for recording the measurement record of the length measuring machine and transmitting the measurement record to the information sorting unit, and the measurement record comprises various environmental parameter values, actual measurement size and target measurement size during measurement; the information sorting unit is used for receiving the measurement records of the length measuring machine, sorting the measurement records, constructing a target measurement training sample, and training based on a machine learning method to obtain a temperature compensation model M; the temperature compensation unit is used for compensating the actual measurement size according to the temperature compensation model M; acquiring an actual measurement size measured by the mobile measuring end 8; inputting various environmental parameter values during measurement into a temperature compensation model M to obtain a temperature compensation coefficient; compensating the actual measurement size according to the temperature compensation coefficient to obtain a compensation measurement size; the temperature compensation unit is used for transmitting the compensation measurement size to the display screen for real-time display and automatic calculation, so that the size data which are compensated are displayed, the workpiece is not required to be measured at each time, manual calculation is replaced, the measurement errors caused by different temperature changes of the length measuring machine and the workpiece are well solved, and the use is convenient and the error is avoided.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A length measuring machine for solving the temperature influence is characterized by comprising a grating ruler (1) and a guide rail (2); the grating ruler (1) and the guide rail (2) are arranged on the length measuring machine base (4);
a fixed measuring end (5) is installed on the guide rail (2), a fixed measuring end base (6) is installed on the lower portion of the fixed measuring end (5), and a fixed measuring rod supporting block (3) is arranged on one side of the fixed measuring end base (6); the guide rail (2) is also provided with a mobile measuring end (8);
the digital display control system (7) is arranged on the mobile measuring end (8), and the digital display control system (7) is used for carrying out temperature compensation on the actual measured size obtained by measurement of the mobile measuring end (8) to obtain a compensated measured size; transmitting the compensation measurement size to a display screen for real-time display;
the digital display control system (7) comprises a temperature acquisition unit, an information recording unit, an information arrangement unit, a temperature compensation unit and a display screen; the information recording unit is used for recording the measurement record of the length measuring machine and transmitting the measurement record to the information sorting unit;
the information sorting unit is used for receiving the measurement records of the length measuring machine, sorting the measurement records, constructing a target measurement training sample, and obtaining a temperature compensation model M based on a machine learning method in training; and transmitting the temperature compensation model M to a temperature compensation unit; and the temperature compensation unit is used for compensating the actual measurement size according to the temperature compensation model M to obtain a compensation measurement size.
2. The length measuring machine for solving the temperature influence according to claim 1, wherein the specific training process of the temperature compensation model M is as follows:
establishing an error reverse propagation neural network model; the error reverse propagation neural network model at least comprises a hidden layer;
dividing a target measurement training sample into a training set, a test set and a check set according to a set proportion;
and training, testing and verifying the error reverse propagation neural network through the training set, the testing set and the verifying set, and marking the trained error reverse propagation neural network as a temperature compensation model M.
3. The length measuring machine for solving the temperature influence according to claim 2, wherein the specific compensation steps of the temperature compensation unit are as follows:
acquiring an actual measurement size obtained by measurement of the mobile measurement end (8); inputting various environmental parameter values during measurement into a temperature compensation model M to obtain a temperature compensation coefficient;
compensating the actual measurement size according to the temperature compensation coefficient to obtain a compensation measurement size; and the temperature compensation unit is used for transmitting the compensation measurement size to the display screen for real-time display.
4. A length measuring machine for solving the problem of temperature influence as claimed in claim 1, wherein said measurement record includes various environmental parameter values, actual measurement size and target measurement size at the time of measurement; the temperature acquisition unit is used for acquiring various environmental parameter values during measurement; the various environmental parameter values comprise the temperature of the length measuring machine, the temperature of the workpiece and the current environmental temperature.
5. The length measuring machine for solving the temperature influence as claimed in claim 1, wherein a movable measuring end base (9) is installed at the lower part of the movable measuring end (8), a movable measuring end measuring rod supporting block (10) is arranged at one side of the movable measuring end base (9), and the movable measuring end (8) moves back and forth on the guide rail (2).
6. A length measuring machine to solve the temperature effect as claimed in claim 5, wherein the specific measuring steps to move the measuring end (8) are:
firstly, slowly pushing the movable measuring end (8) to the fixed measuring end (5) to make the movable measuring end contact with the fixed measuring end, checking size data displayed by the digital display control system (7) and setting the size data to be 0;
slowly pushing the movable measuring end (8), observing the digital display control system (7), and finely adjusting when the target measuring size is approached, so that the digital display control system (7) displays the target measuring size; at the moment, the movable measuring end (8) is locked, the measuring rod is placed for taking numbers, the large needle of the dial indicator of the measuring rod is adjusted to be 0 position, and the position of the small needle is recorded, so that the actual measuring size is obtained.
7. The length measuring machine capable of solving the temperature influence as claimed in claim 3, wherein the digital display control system (7) further comprises a model optimization unit, the model optimization unit is used for obtaining a compensation measurement size, comparing the compensation measurement size with a target measurement size, evaluating the result through comparison, and then performing real-time feedback optimization on the temperature compensation model M according to the evaluation result.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210593729.9A CN114993188A (en) | 2022-05-27 | 2022-05-27 | Length measuring machine capable of solving temperature influence |
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| CN202210593729.9A CN114993188A (en) | 2022-05-27 | 2022-05-27 | Length measuring machine capable of solving temperature influence |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540987A (en) * | 2022-09-19 | 2022-12-30 | 蚌埠高灵传感系统工程有限公司 | Dynamic vehicle overload detection method and control device based on load sensor |
| CN117739819A (en) * | 2024-02-07 | 2024-03-22 | 上海强华实业股份有限公司 | Method and system for measuring shape and size of precision-burned product |
-
2022
- 2022-05-27 CN CN202210593729.9A patent/CN114993188A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115540987A (en) * | 2022-09-19 | 2022-12-30 | 蚌埠高灵传感系统工程有限公司 | Dynamic vehicle overload detection method and control device based on load sensor |
| CN117739819A (en) * | 2024-02-07 | 2024-03-22 | 上海强华实业股份有限公司 | Method and system for measuring shape and size of precision-burned product |
| CN117739819B (en) * | 2024-02-07 | 2024-05-03 | 上海强华实业股份有限公司 | Method and system for measuring shape and size of precision-burned product |
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