CN113970354B - Method for controlling normal start and stop of push rod of test board of seal inspection device - Google Patents
Method for controlling normal start and stop of push rod of test board of seal inspection device Download PDFInfo
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- CN113970354B CN113970354B CN202111120758.5A CN202111120758A CN113970354B CN 113970354 B CN113970354 B CN 113970354B CN 202111120758 A CN202111120758 A CN 202111120758A CN 113970354 B CN113970354 B CN 113970354B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Abstract
The invention relates to a railway turnout closure checker, in particular to a control method for controlling the normal start and stop of a push rod of a test board of the closure checker. The invention keeps the original hardware equipment such as a travel switch, a displacement sensor, a digital display scale and the like, and introduces the concept of a logic limit switch through software control, thereby effectively solving the defects of the traditional test bench under the double-layer protection of software and hardware and better meeting the test requirement.
Description
Technical Field
The invention relates to a railway turnout closure checker, in particular to a control method for controlling the normal start and stop of a push rod of a test board of the closure checker.
Background
The test bench for the contact checker is mainly used for testing various characteristics of the railway turnout contact checker, including parameters such as horizontal driving force, displacement, insulation resistance and the like for representing the drawing-in and the extending-out of a rod. When the traditional test board for the sealing inspection device is used for testing the action characteristic of the sealing inspection device, two travel switches are required to be arranged at two ends of a travel respectively so as to control a push rod to normally start and stop. Although this kind of structure is simple in design, easily realizes, still has following defect:
1. the position of the travel switch needs to be adjustable so as to meet the requirements of different models and different strokes;
2. the test can only be performed according to the theoretical maximum stroke of the close contact checker, and the user-defined stroke is not supported.
Disclosure of Invention
The invention aims to provide a control method for controlling the normal start and stop of a push rod of a test bench of a seal checker, which has a wide application range, can adapt to different stroke requirements, can effectively overcome the defects of the traditional test bench and better meet the test requirements.
In order to solve the above problems, the present invention provides a method for controlling the normal start and stop of a push rod of a test board of a seal checker, which is characterized in that: the method comprises the following steps:
1) step 1, entering an interface, clicking a test key, and entering step 2);
2) step 2, whether a zero crossing point position is setSzero, none, go to step 3), some, according to user-defined maximum strokeMaxMoveRangeZero point positionSzero, stroke correction factorfRange and displacement correction factorfWY, calculating the initial position of the logical limit switchSstart and stop positionsSend, continuing with step 4);
3) step 3, prompting to set a zero position, and turning to step 11);
4) step 4, obtaining a current displacement value, and continuing to step 5);
5) step 5, detecting and judging whether the current displacement value is at the initial position or not by acquiring the sensing signalSstart and stop positionsSend interval, not present, go to step 6), continue step 7);
6) step 6, prompting to enter detection in the opposite direction, and turning to step 11);
7) step 7, clearing the digital display scale, starting the test, and turning to step 8);
8) step 8, reading the displacement sensing signal in real time, and continuing to step 9);
9) step 9), detecting whether the current displacement value reaches the position of the logic limit switch or not according to the sensing signal in the step 8), and continuing the step 8); continuing with step 10);
10) step 10, controlling the push rod to stop moving, reading an actually measured stroke value from the digital display scale ruler, and continuing to step 11);
11) and step 11, ending the unidirectional test.
The logic limit switch in the step 2) comprises: starting positionSstart and stop positionsSend. Taking the installation mode of 'left 0 right maximum measuring range' of the digital display scale as an example, the initial positionSstart and stop positionSend is respectively:
zero position at the left end of the digital scale:
starting positionSstart= Szero(1.1)
Stop positionSend=Sstart+MaxMoveRange(1.2)
The zero point position is at the right end of the digital display scale:
starting positionSstart= Szero(1.3)
Stop positionSend=Sstart-MaxMoveRange(1.4)。
Wherein the content of the first and second substances,Szero is the zero position at which the test starts, namely the position at which the close contact checker indicates that the rod inclined plane is just in contact with the roller;MaxMoveRangeand defining the maximum stroke for the user.
The calculation of the start-stop position of the logic limit switch also needs to comprise a stroke correction factorfRange and displacement correction factorfWY is used for eliminating impact when the motor is started and stopped and preventing the indication rod from being pulled off or locked.
The stroke correction factorfAnd Range, adjusting the indicating rod to be close to the zero point position, recording the current displacement value as 'initial displacement', starting the test after the zero clearing digital display scale is displayed, and enabling the indicating rod to move by the distance of the self-defined maximum stroke. After the test is stopped, reading the current stroke value from the digital display scale, wherein the difference value between the current stroke value and the self-defined maximum stroke is the stroke correction factorfRange。
The displacement correction factorfWY, moving the sealing detector in the opposite direction, and recording the current displacement value after the test is stopped, the current displacement value and the current displacement valuefThe difference value of the recorded initial displacement in the Range test process is the displacement correction factorfWY。
Said stroke correction factorfRange and displacement correction factorfWY isDetermining, by debugging, a course correction factor before initiating a testfRange and displacement correction factorfOnce determined, WY is no longer so constrained during formal testing.
Introducing said stroke correction factorfRange and displacement correction factorfWY, taking the installation mode of 'left 0 right maximum measuring range' of digital display scale as an example, the initial position of the logic limit switchSstart and stop positionsSend is respectively:
zero position at the left end of the digital scale:
starting positionSstart=Szero+fWY(1.5)
Stop positionSend=Szero+MaxMoveRange-fRange(1.6)
The zero point position is at the right end of the digital display scale:
starting positionSstart=Szero-fWY(1.7)
Stop positionSend=Szero-MaxMoveRange+fRange(1.8)。
The invention has the advantages that: the concept of 'logic limit switch' is introduced through software control while hardware equipment such as original travel switch, displacement sensor, digital display scale remain to under the double-deck protection of software, hardware, effectively solved the above-mentioned not enough of traditional testboard, satisfied the test demand better.
The invention is further explained below with reference to the drawings of the embodiments.
Drawings
FIG. 1 is a flow chart of a control method for controlling the normal start and stop of a push rod of a test bench of a seal inspection device according to the present invention.
Detailed Description
To further explain the technical means adopted by the invention to achieve the predetermined purpose, the following detailed description of the embodiments, structural features and effects of the invention are provided in the accompanying drawings and examples.
As shown in fig. 1, the present invention relates to a method for controlling the normal start and stop of a push rod of a test bench of a seal checker, which is characterized in that: the method comprises the following steps:
1) step 1, entering an interface, clicking a test key, and entering step 2);
2) step 2, whether to set the zero crossing point positionSzero, none, go to step 3), some, according to user-defined maximum strokeMaxMoveRangeZero point positionSzero, stroke correction factorfRange and displacement correction factorfWY, calculating the initial position of the logic limit switchSstart and stop positionsSend, continuing with step 4);
3) step 3, prompting to set a zero position, and turning to step 11);
4) step 4, obtaining a current displacement value, and continuing to step 5;
5) step 5, detecting and judging whether the current displacement value is at the initial position or not by acquiring the sensing signalSstart and stop positionsSIf the end interval is not present, the step 6) is carried out, and the step 7 is continued;
6) step 6, prompting to enter detection in the opposite direction, and turning to step 11);
7) step 7, clearing the digital display scale, starting the test, and turning to step 8);
8) step 8, reading the displacement sensing signal in real time, and continuing to step 9;
9) step 9, detecting whether the current displacement value reaches the position of the logic limit switch according to the sensing signal in the step 8), and continuing the step 8 if the current displacement value does not reach the position of the logic limit switch; continuing with step 10);
10) step 10, controlling the push rod to stop moving, reading an actually measured stroke value from the digital display scale ruler, and continuing to step 11);
11) and step 11, ending the unidirectional test.
The logic limit switch in the step 2) comprises an initial positionSstart and stop positionSend. Taking the installation mode of 'left 0 right maximum measuring range' of the digital display scale as an example, the initial positionSstart and stop positionsSend is respectively:
zero position at the left end of the digital scale:
starting positionSstart= Szero (1.1)
Stop positionSend=Sstart+MaxMoveRange (1.2)
The zero point position is at the right end of the digital display scale:
starting positionSstart= Szero (1.3)
Stop positionSend=Sstart-MaxMoveRange (1.4)。
Wherein the content of the first and second substances,Szero is the zero position at which the test starts, namely the position at which the close contact checker indicates that the rod inclined plane is just in contact with the roller;MaxMoveRangeand defining the maximum stroke for the user.
The calculation of the start-stop position of the logic limit switch also needs to comprise a stroke correction factorfRange and displacement correction factorfWY is used for eliminating impact when the motor is started and stopped and preventing the indication rod from being pulled off or locked.
Stroke correction factorfAnd Range, adjusting the indicating rod to be close to the zero point position, recording the current displacement value as 'initial displacement', starting the test after the zero clearing digital display scale is displayed, and enabling the indicating rod to move by the distance of the self-defined maximum stroke. After the test is stopped, reading the current stroke value from the digital display scale, wherein the difference value between the current stroke value and the self-defined maximum stroke is the stroke correction factorfRange。
Displacement correction factorfWY, moving the sealing detector in the opposite direction, and recording the current displacement value after the test is stopped, the current displacement value and the current displacement valuefThe difference value of the recorded initial displacement in the Range test process is the displacement correction factorfWY。
Stroke correction factorfRange and displacement correction factorfWY is determined by debugging before starting the test, otherwise it will affect the accuracy of the subsequent seal checker action performance test data. It should be noted that, during the debugging process, the zero position and the theoretical maximum stroke of the contact checker cannot be directly used for testing, and the zero position and the theoretical maximum stroke of the contact checker should be slightly smaller than a theoretical value, otherwise, the motor impact may cause the indication rod to be pulled off or locked. Stroke correction factorfRange and displacement correction factorfOnce determined, WY is no longer so constrained during formal testing.
Introduction ofStroke correction factorfRange and displacement correction factorfWY, taking the installation mode of 'left 0 right maximum measuring range' of digital display scale as an example, the initial position of the logic limit switchSstart and stop positionsSend is respectively:
zero position at the left end of the digital scale:
starting positionSstart=Szero+fWY (1.5)
Stop positionSend=Szero+MaxMoveRange-fRange (1.6)
The zero point position is at the right end of the digital display scale:
starting positionSstart=Szero-fWY (1.7)
Stop positionSend=Szero-MaxMoveRange+fRange (1.8)。
The logic limit switch is a push rod start-stop position calculated and set by software, and the function of the logic limit switch is similar to that of a hardware travel switch. In the test process, software monitors the current displacement value in real time through the displacement sensor, and when the displacement value reaches the position of the logic limit switch, the software controls the push rod to stop moving.
In practical application, the hardware stroke switch is still reserved, and the starting position and the stopping position of the hardware stroke switch are relatively fixed without repeated adjustment. During testing, the logic limit switch set by the software plays a role and is used for controlling the normal start and stop of the push rod. However, when the software is abnormal and the logic limit switch fails, the hardware stroke switch can still effectively prevent the indicating rod of the sealing checker from being pulled off or locked.
Test data show that aiming at 3 kinds of different models of close contact checker equipment, the invention can well meet the requirements of user-defined stroke test through 3 kinds of embodiments, and the measurement deviation is +/-3 mm.
Example 1
The following specific data are referenced and substituted into the steps and equations to illustrate the effect of the following tightness checker model JM-A170/65:
in example 1, for model JM-a 170/65, 3 tests were performed, and the user-defined maximum strokes were: 130mm, 150mm and 170 mm. Through the control of the logic limit switch, the measured actual maximum strokes are respectively as follows: 128.5mm, 150.4mm and 169.8 mm.
Example 2
The following specific data are referenced and substituted into the steps and equations to illustrate the effect of the following tightness checker model JM-AY 170/25:
in example 2, for model JM-AY 170/25, 3 tests were performed, and the user-defined maximum strokes were: 130mm, 150mm and 170 mm. Through the control of the logic limit switch, the measured actual maximum strokes are respectively as follows: 132.4mm, 149.5mm and 168.4 mm.
Example 3
The following specific data are referenced and substituted into the steps and equations to illustrate the effect of the following tightness checker model JM-AY 170/65:
in example 3, for model JM-AY 170/65, 3 tests were performed, and the user-defined maximum strokes were: 130mm, 150mm and 170 mm. Through the control of the logic limit switch, the measured actual maximum strokes are respectively as follows: 130.4mm, 149.5mm and 172.2 mm.
The invention adopts a control mode combining software and hardware, thereby not only reducing manual operation and improving the operation friendliness of the test board, but also providing the most reliable guarantee for the equipment of the close-contact detector.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (3)
1. A normal start-stop control method for a push rod of a test board of a control seal checker is characterized by comprising the following steps: the method comprises the following steps:
step 1, entering an interface, clicking a test key, and entering step 2;
step 2, whether a zero crossing point position is setSzero, none, go to step 3, some, according to user-defined maximum strokeMaxMoveRangeZero point positionSzero, stroke correction factorfRange and displacement correction factorfWY, calculating the initial position of the logical limit switchSstart and stop positionSend, continuing to step 4;
step 3, prompting to set a zero position, and turning to step 11;
step 4, obtaining a current displacement value, and continuing to step 5;
step 5, detecting and judging whether the current displacement value is at the initial position or not by acquiring the sensing signalSstart and stop positionsSIf the end interval is not present, the step 6 is carried out, and the step 7 is continued;
step 6, prompting to enter detection in the opposite direction, and turning to step 11;
step 7, resetting the digital display scale, starting the test, and turning to step 8;
step 8, reading the displacement sensing signal in real time, and continuing to step 9;
step 9, detecting whether the current displacement value reaches the position of the logic limit switch or not according to the sensing signal in the step 8, and continuing the step 8 if the current displacement value does not reach the position of the logic limit switch; if yes, continuing to step 10;
step 10, controlling the push rod to stop moving, reading an actually measured stroke value from the digital display scale ruler, and continuing to step 11;
step 11, ending the unidirectional test;
the calculation of the start-stop position of the logic limit switch also needs to comprise a stroke correction factorfRange and displacement correction factorfWY, which is used for eliminating the impact when the motor is started and stopped and preventing the indication rod from being pulled off or locked; taking the installation mode of 'left 0 right maximum measuring range' of the digital display scale as an example, the initial position of the logic limit switchSstart and stop positionsSend is respectively:
zero position at the left end of the digital scale:
starting positionSstart=Szero+fWY (1.5)
Stop positionSend=Szero+MaxMoveRange-fRange (1.6)
The zero point position is at the right end of the digital display scale:
starting positionSstart=Szero-fWY (1.7)
Stop positionSend=Szero-MaxMoveRange+fRange (1.8)。
2. The method as claimed in claim 1, wherein the method comprises the steps of: the stroke correction factorfRange, adjusting the indicating rod to be near the zero point position, recording the current displacement value as 'initial displacement', starting the test after the zero clearing digital display scale displays, and enabling the indicating rod to move by the distance of the self-defined maximum stroke;
after the test is stopped, reading the current stroke value from the digital display scale, wherein the difference value between the current stroke value and the self-defined maximum stroke is the stroke correction factorfRange。
3. The method as claimed in claim 1, wherein the method comprises the steps of: the displacement correction factorfWY, moving the sealing detector in the opposite direction, and recording the current displacement value after the test is stopped, the current displacement value and the current displacement valuefThe difference value of the recorded initial displacement in the Range test process is the displacement correction factorfWY；
Stroke correction factorfRange and displacement correction factorfWY is the stroke correction factor determined by debugging before initiating the testfRange and displacement correction factorfOnce determined, WY is no longer so constrained during formal testing.
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Inventor after: Zhang Li Inventor after: Xu Tangqiao Inventor after: Ren Qiang Inventor after: Feng Guiping Inventor after: Li Bin Inventor after: Jin Xin Inventor after: Han Meili Inventor before: Zhang Li Inventor before: Feng Guiping Inventor before: Li Bin Inventor before: Jin Xin Inventor before: Han Meili |