CN110657831A - Pulse encoder quality detection system - Google Patents
Pulse encoder quality detection system Download PDFInfo
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- CN110657831A CN110657831A CN201910829573.8A CN201910829573A CN110657831A CN 110657831 A CN110657831 A CN 110657831A CN 201910829573 A CN201910829573 A CN 201910829573A CN 110657831 A CN110657831 A CN 110657831A
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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
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The quality detection system of the pulse encoder provided by the invention comprises a single chip microcomputer, a stepping motor and a high-speed photoelectric coupler; the single chip microcomputer controls the stepping motor to rotate by sending a signal instruction to the stepping motor; a rotating shaft of the stepping motor is sleeved and connected with an encoding disc of the pulse encoder through a coupler, and the stepping motor drives the pulse encoder to rotate to generate a pulse signal when rotating; the pulse encoder is connected with the singlechip through a high-speed photoelectric coupler. In the using process, a user inputs a quality detection instruction of the pulse encoder through an external interface of the singlechip; the single chip microcomputer controls the stepping motor to rotate according to the quality detection instruction and counts pulses generated by the pulse encoder; the single chip microcomputer calculates and processes the rotation parameter data of the stepping motor and the number of pulses generated by the pulse encoder to obtain the quality detection data of the pulse encoder. The scheme not only realizes the comprehensive detection of the comprehensive indexes of the pulse encoder, but also has the characteristics of high detection efficiency and accurate detection result data.
Description
Technical Field
The invention relates to the technical field of encoder detection, in particular to a quality detection system of a pulse encoder.
Background
A pulse encoder is an optical position detecting element, and its output signal is an electric pulse. The pulse encoder is widely used as a position counting device in the industrial field, and the working efficiency and the accuracy of the pulse encoder determine the performance of related application products. Therefore, quality detection of the pulse encoder is crucial.
In the prior art, an oscilloscope is usually used to detect the waveform of an output signal of a pulse encoder, and then the waveform of the output signal of the pulse encoder is observed manually to determine whether the quality of the pulse encoder is abnormal. Therefore, the quality detection method of the pulse encoder in the prior art has the problems of inaccurate detection result and low detection efficiency, and cannot comprehensively detect the comprehensive indexes of the pulse encoder.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a quality detection system for a pulse encoder.
The invention provides a quality detection system of a pulse encoder, which comprises: the system comprises a singlechip, a stepping motor and a high-speed photoelectric coupler; the single chip microcomputer is connected with the stepping motor and controls the stepping motor to rotate by sending a signal instruction to the stepping motor; a rotating shaft of the stepping motor is sleeved and connected with an encoding disc of the pulse encoder through a coupler, and the stepping motor drives the pulse encoder to rotate to generate a pulse signal when rotating; the pulse encoder is connected with the single chip microcomputer through the high-speed photoelectric coupler, and the single chip microcomputer counts pulse signals generated by the pulse encoder;
a user inputs a quality detection instruction of the pulse encoder through an external interface of the single chip microcomputer; the quality detection instructions include: a comprehensive index detection instruction, an abnormal point detection instruction, a resolution detection instruction and a maximum pulse frequency detection instruction;
the single chip microcomputer controls the stepping motor to rotate according to the quality detection instruction and counts pulses generated by the pulse encoder;
the single chip microcomputer calculates and processes the rotation parameter data of the stepping motor and the number of pulses generated by the pulse encoder to obtain quality detection data of the pulse encoder; the rotation parameters of the stepper motor include: direction of rotation, step angle, rotational speed, rotational acceleration, and angular displacement.
The system as described above, wherein the user inputs the quality detection instruction of the pulse encoder through an external interface of the single chip, specifically:
the user inputs the quality detection instruction of the pulse encoder through the operation key of the single chip microcomputer.
In the above system, if the quality detection instruction is a comprehensive index detection instruction, the single chip controls the rotation of the stepping motor according to the quality detection instruction, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate for a circle clockwise at a first rotating speed; the first rotating speed is less than a second rotating speed, and the second rotating speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state;
the single chip microcomputer controls the stepping motor to rotate in an accelerated manner in a clockwise direction at a first rotating speed as an initial speed until the rotating speed of the stepping motor reaches a second rotating speed;
the single chip microcomputer controls the stepping motor to rotate for a circle along the counterclockwise direction at a first rotating speed;
the single chip microcomputer controls the stepping motor to rotate in an accelerated mode in the anticlockwise direction by taking the first rotating speed as an initial speed until the rotating speed of the stepping motor reaches the second rotating speed.
In the above system, if the quality detection instruction is an abnormal point detection instruction or a resolution detection instruction, the single chip controls the rotation of the stepping motor according to the quality detection instruction, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate for a circle clockwise at a first rotating speed and then rotate for a circle anticlockwise at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
In the above system, if the quality detection instruction is an abnormal point detection instruction or a resolution detection instruction, the single chip controls the rotation of the stepping motor according to the quality detection instruction, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate for a circle along the anticlockwise direction at a first rotating speed and then rotate for a circle along the clockwise direction at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
In the above system, if the quality detection instruction is a maximum pulse frequency detection instruction, the single chip controls the rotation of the stepping motor according to the quality detection instruction, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in a clockwise direction in an accelerated manner until the rotating speed of the stepping motor reaches a second rotating speed; the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state;
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in an anticlockwise direction in an accelerated mode until the rotating speed of the stepping motor reaches a second rotating speed.
The system as described above, further, after obtaining the quality detection data of the pulse encoder, further comprising:
and the single chip microcomputer processes the obtained quality detection data of the pulse encoder to generate a quality detection report of the pulse encoder.
In the system, preferably, the single chip microcomputer is further provided with an information display screen;
the information display screen is used for displaying a quality detection instruction of the pulse encoder input by a user;
the information display screen is also used for displaying the finally generated quality detection report of the pulse coder.
The invention provides a quality detection system of a pulse encoder, which comprises: the system comprises a singlechip, a stepping motor and a high-speed photoelectric coupler; the single chip microcomputer is connected with the stepping motor and controls the stepping motor to rotate by sending a signal instruction to the stepping motor; a rotating shaft of the stepping motor is sleeved and connected with an encoding disc of the pulse encoder through a coupler, and the stepping motor drives the pulse encoder to rotate to generate a pulse signal when rotating; the pulse encoder is connected with the single chip microcomputer through the high-speed photoelectric coupler, and the single chip microcomputer counts pulse signals generated by the pulse encoder. In the using process, a user inputs a quality detection instruction of the pulse encoder through an external interface of the singlechip; the single chip microcomputer controls the stepping motor to rotate according to the quality detection instruction and counts pulses generated by the pulse encoder; the single chip microcomputer calculates and processes the rotation parameter data of the stepping motor and the number of pulses generated by the pulse encoder to obtain the quality detection data of the pulse encoder. The technical scheme provided by the invention can not only carry out comprehensive detection on the comprehensive indexes of the pulse encoder, but also has the characteristics of high detection efficiency and accurate detection result data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a pulse encoder quality detection system according to the present invention;
FIG. 2 is a flow chart of a method for detecting the quality of a pulse encoder according to the present invention;
fig. 3 is a schematic diagram of an application embodiment of the pulse encoder quality detection system provided by 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.
Fig. 1 is a schematic structural diagram of a pulse encoder quality detection system provided by the present invention. Referring to fig. 1, the present invention provides a quality detection system for a pulse coder, comprising: the system comprises a singlechip, a stepping motor and a high-speed photoelectric coupler; the single chip microcomputer is connected with the stepping motor and controls the stepping motor to rotate by sending a signal instruction to the stepping motor; a rotating shaft of the stepping motor is sleeved and connected with an encoding disc of the pulse encoder through a coupler, and the stepping motor drives the pulse encoder to rotate to generate a pulse signal when rotating; the pulse encoder is connected with the single chip microcomputer through the high-speed photoelectric coupler, and the single chip microcomputer counts pulse signals generated by the pulse encoder. Preferably, the single chip microcomputer is also provided with an information display screen; the information display screen is used for displaying a quality detection instruction of the pulse encoder input by a user; the information display screen is also used for displaying the finally generated quality detection report of the pulse coder.
Fig. 2 is a flowchart of a method for detecting quality of a pulse encoder according to the present invention. Referring to fig. 1 and 2, the method of the present embodiment may include the following.
S1, inputting a quality detection instruction of the pulse encoder through an external interface of the single chip microcomputer by a user; the quality detection instructions include: the method comprises a comprehensive index detection instruction, an abnormal point detection instruction, a resolution detection instruction and a maximum pulse frequency detection instruction.
In this step, the user inputs the quality detection instruction of the pulse encoder through an external interface of the single chip microcomputer, and the quality detection instruction specifically includes:
the user inputs the quality detection instruction of the pulse encoder through the operation key of the single chip microcomputer.
And S2, the single chip microcomputer controls the stepping motor to rotate according to the quality detection instruction and counts the pulses generated by the pulse encoder.
If the quality detection instruction is a comprehensive index detection instruction, the step of controlling the rotation of the stepping motor by the single chip microcomputer according to the quality detection instruction may specifically include:
s201, the single chip microcomputer controls the stepping motor to rotate for one circle clockwise at a first rotating speed; the first rotation speed is less than the second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from the pulse frequency normal state to the pulse frequency abnormal state.
S202, the single chip microcomputer controls the stepping motor to rotate in an accelerated mode at the first rotating speed as the initial speed in the clockwise direction until the rotating speed of the stepping motor reaches the second rotating speed.
And S203, the single chip microcomputer controls the stepping motor to rotate for one circle along the counterclockwise direction at the first rotating speed.
And S204, the single chip microcomputer controls the stepping motor to rotate in an accelerated manner along the counterclockwise direction by taking the first rotating speed as the initial speed until the rotating speed of the stepping motor reaches the second rotating speed.
S3, the single chip microcomputer calculates and processes the rotation parameter data of the stepping motor and the number of pulses generated by the pulse encoder to obtain the quality detection data of the pulse encoder; the rotation parameters of the stepper motor include: direction of rotation, step angle, rotational speed, rotational acceleration, and angular displacement.
The system as described above, further, after obtaining the quality detection data of the pulse encoder, may further include:
and the single chip microcomputer processes the obtained quality detection data of the pulse encoder to generate a quality detection report of the pulse encoder.
In a specific application, if the quality detection instruction is an abnormal point detection instruction or a resolution detection instruction, the controlling, by the single chip microcomputer in S2, the rotation of the stepping motor according to the quality detection instruction may specifically include:
the single chip microcomputer controls the stepping motor to rotate for a circle clockwise at a first rotating speed and then rotate for a circle anticlockwise at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
If the quality detection instruction is an abnormal point detection instruction or a resolution detection instruction, the single chip microcomputer in S2 controls the stepping motor to rotate according to the quality detection instruction, which may specifically include:
the single chip microcomputer controls the stepping motor to rotate for a circle along the anticlockwise direction at a first rotating speed and then rotate for a circle along the clockwise direction at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
If the quality detection instruction is a maximum pulse frequency detection instruction, the step motor is controlled to rotate by the single chip microcomputer in S2 according to the quality detection instruction, which may specifically include:
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in a clockwise direction in an accelerated manner until the rotating speed of the stepping motor reaches a second rotating speed; the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state;
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in an anticlockwise direction in an accelerated mode until the rotating speed of the stepping motor reaches a second rotating speed.
In summary, the technical scheme provided by the invention can comprehensively detect various indexes such as abnormal points, resolution, maximum pulse frequency and the like of the pulse encoder, and has the characteristics of high detection efficiency and accurate detection result data.
The following is an application example of the technical solution provided by the embodiment of the present invention.
Fig. 3 is a schematic diagram of an application embodiment of the pulse encoder quality detection system provided by the present invention. Referring to fig. 3, this system is mainly by single chip microcomputer control, after encoder A, B, Z meets the high-speed count opto-coupler terminal of income, presses the operation button and selects the test, and the step motor will be controlled to the singlechip this moment and tests, because step motor characteristic, step motor step index (step angle) are predetermine to the singlechip, so this system can not learn the rotation angle under the circumstances of plus encoder. Firstly, the stepping motor rotates one circle slowly, the high-speed counter counts one circle of pulses, the resolution of the encoder is known, and meanwhile, whether A, B, Z phases work normally is detected. Then the stepping motor rotates from slow to fast, the high-speed counter continuously samples the pulse in the rotating process, and when the pulse frequency of the encoder is abnormal due to the slow to fast speed, the maximum pulse frequency of the encoder can be obtained through calculation of single chip microcomputer software. This test is divided into forward and reverse rotation. When the test is complete, a test report will be generated. In the accelerated test, any anomalies in the pulse readings of the encoder can be reflected in the reporting curve in the print.
On one hand, the quality detection system product of the pulse encoder provided by the embodiment of the invention is easy to implement and high in cost performance. On the other hand, the encoder has high inspection efficiency, can automatically read encoder parameters, can monitor the pulse state of the encoder during inspection, has an abnormal point detection function and the like, and can generate a quality detection report for printout.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A pulse encoder quality detection system, comprising: the system comprises a singlechip, a stepping motor and a high-speed photoelectric coupler; the single chip microcomputer is connected with the stepping motor and controls the stepping motor to rotate by sending a signal instruction to the stepping motor; a rotating shaft of the stepping motor is sleeved and connected with an encoding disc of the pulse encoder through a coupler, and the stepping motor drives the pulse encoder to rotate to generate a pulse signal when rotating; the pulse encoder is connected with the single chip microcomputer through the high-speed photoelectric coupler, and the single chip microcomputer counts pulse signals generated by the pulse encoder;
a user inputs a quality detection instruction of the pulse encoder through an external interface of the single chip microcomputer; the quality detection instructions include: a comprehensive index detection instruction, an abnormal point detection instruction, a resolution detection instruction and a maximum pulse frequency detection instruction;
the single chip microcomputer controls the stepping motor to rotate according to the quality detection instruction and counts pulses generated by the pulse encoder;
the single chip microcomputer calculates and processes the rotation parameter data of the stepping motor and the number of pulses generated by the pulse encoder to obtain quality detection data of the pulse encoder; the rotation parameters of the stepper motor include: direction of rotation, step angle, rotational speed, rotational acceleration, and angular displacement.
2. The system of claim 1, wherein the user inputs the quality detection command of the pulse encoder through an external interface of the single chip, specifically:
the user inputs the quality detection instruction of the pulse encoder through the operation key of the single chip microcomputer.
3. The system according to claim 2, wherein if the quality detection instruction is a composite index detection instruction, the single chip controls the rotation of the stepping motor according to the quality detection instruction, and specifically comprises:
the single chip microcomputer controls the stepping motor to rotate for a circle clockwise at a first rotating speed; the first rotating speed is less than a second rotating speed, and the second rotating speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state;
the single chip microcomputer controls the stepping motor to rotate in an accelerated manner in a clockwise direction at a first rotating speed as an initial speed until the rotating speed of the stepping motor reaches a second rotating speed;
the single chip microcomputer controls the stepping motor to rotate for a circle along the counterclockwise direction at a first rotating speed;
the single chip microcomputer controls the stepping motor to rotate in an accelerated mode in the anticlockwise direction by taking the first rotating speed as an initial speed until the rotating speed of the stepping motor reaches the second rotating speed.
4. The system according to claim 2, wherein if the quality detection command is an abnormal point detection command or a resolution detection command, the single chip microcomputer controls the rotation of the stepping motor according to the quality detection command, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate for a circle clockwise at a first rotating speed and then rotate for a circle anticlockwise at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
5. The system according to claim 2, wherein if the quality detection command is an abnormal point detection command or a resolution detection command, the single chip microcomputer controls the rotation of the stepping motor according to the quality detection command, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate for a circle along the anticlockwise direction at a first rotating speed and then rotate for a circle along the clockwise direction at the first rotating speed; the first rotation speed is less than a second rotation speed, and the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state.
6. The system according to claim 2, wherein if the quality detection command is a maximum pulse frequency detection command, the single chip microcomputer controls the rotation of the stepping motor according to the quality detection command, and specifically includes:
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in a clockwise direction in an accelerated manner until the rotating speed of the stepping motor reaches a second rotating speed; the second rotation speed is a critical speed which causes the pulse encoder to be converted from a pulse frequency normal state to a pulse frequency abnormal state;
the single chip microcomputer controls the stepping motor to rotate at an initial speed of zero in an anticlockwise direction in an accelerated mode until the rotating speed of the stepping motor reaches a second rotating speed.
7. The system according to any one of claims 1-6, further comprising, after obtaining the quality measurement data of the pulse coder:
and the single chip microcomputer processes the obtained quality detection data of the pulse encoder to generate a quality detection report of the pulse encoder.
8. The system of claim 7, wherein the single chip microcomputer is further provided with an information display screen;
the information display screen is used for displaying a quality detection instruction of the pulse encoder input by a user;
the information display screen is also used for displaying the finally generated quality detection report of the pulse coder.
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| CN201910829573.8A CN110657831A (en) | 2019-09-03 | 2019-09-03 | Pulse encoder quality detection system |
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| CN201910829573.8A CN110657831A (en) | 2019-09-03 | 2019-09-03 | Pulse encoder quality detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112461110A (en) * | 2020-11-16 | 2021-03-09 | 苏州朗高电机有限公司 | Testing tool of SSI encoder |
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Address after: No. 3138, Shiji Avenue, Huangdao District, Qingdao, Shandong Province Applicant after: Qingdao zhonggate Electric Co.,Ltd. Address before: 266400 Century Avenue, Huangdao District, Qingdao, Shandong Province, No. 662 Applicant before: QINGDAO CCS VFD MOTOR Co.,Ltd. |
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Application publication date: 20200107 |