Motor detection method and device based on test platform, and medium

Abstract

The invention provides a motor detection method and device based on a test platform and a medium, the test platform comprises a handle clamping unit, a transmission connecting piece and a laser displacement sensor, and a medical power handle carrying a to-be-tested motor is installed on the handle clamping unit. An output shaft of the motor is connected with the transmission connecting piece through an output interface of a medical power handle so as to drive the transmission connecting piece to synchronously rotate in a testing state, point position marks are arranged in the circumferential direction of the transmission connecting piece, and the point position marks are located in a scanning area of the laser displacement sensor; the motor rotating speed detection method comprises the following steps: recording the occurrence frequency of point position marks in the rotating process of the motor by scanning the point position marks through the laser displacement sensor; and determining the rotating speed of the motor according to the frequency. The rotating speed of the motor can be accurately and rapidly measured, and accurate and efficient detection of the motor is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of testing technology, and in particular to a method, equipment and medium for testing motors based on a testing platform. Background Technology

[0002] A surgical power unit is a medical device used in surgical procedures to drill, mill, saw, grind, shave, and plan human bone and / or soft tissues. As a crucial component of the surgical power unit, the motor speed test of the medical power handpiece is critical to ensuring surgical efficiency and safety. Accurately detecting whether the speed meets the standards can avoid risks such as low surgical efficiency and tissue damage caused by abnormal speed, ensuring stable equipment performance, compliance with medical standards, and building a strong defense for surgical precision and patient safety. However, current testing methods cannot guarantee the accuracy of these tests. Summary of the Invention

[0003] This invention provides a method, system, equipment, and medium for motor testing based on a testing platform, in order to solve the problem that current testing methods cannot meet the needs of practical applications.

[0004] This invention provides a motor testing method based on a testing platform. The testing platform includes a handle clamping unit, a transmission connector, and a laser displacement sensor. A medical power handle carrying the motor to be tested is mounted on the handle clamping unit, and the output shaft of the motor is connected to the transmission connector through the output interface of the medical power handle to drive the transmission connector to rotate synchronously in the testing state. The transmission connector is provided with circumferential dot marks, which are located in the scanning area of ​​the laser displacement sensor. The motor testing method includes: scanning the dot marks with the laser displacement sensor; recording the frequency of the dot marks appearing during the rotation of the motor; and determining the rotational speed of the motor based on the frequency.

[0005] In one embodiment of the present invention, the point marker includes a groove or a protrusion, and the laser displacement sensor identifies the point marker based on the backlash generated by the groove or protrusion. When the backlash is greater than a preset threshold, the frequency of the point marker is incremented by one.

[0006] In one embodiment of the present invention, the step of determining the motor speed based on the frequency includes: when there is only a single point mark on the transmission connector, determining the time interval between any two adjacent point marks based on the frequency, denoted as a first time, wherein the first time is used to represent the time for the motor to rotate one revolution; determining the number of revolutions of the motor within the preset unit time based on the ratio of the preset unit time to the first time, and determining the motor speed based on the number of revolutions of the motor within the preset unit time.

[0007] In one embodiment of the present invention, the step of determining the motor speed based on the frequency further includes: when there is only a single point mark on the transmission connector, taking the scanning times of two adjacent point marks as a group, obtaining the time intervals of multiple groups of point marks and taking the average as the first time; determining the number of rotations of the motor within the preset unit time based on the ratio of the preset unit time to the first time, and determining the motor speed based on the number of rotations of the motor within the preset unit time.

[0008] In one embodiment of the present invention, the step of determining the motor speed based on the frequency includes: when there are multiple point markers on the transmission connector, taking the first point marker recorded by the laser displacement sensor as the counting starting point; when the count value of the point marker is (m+1), the motor rotates one revolution, and the time of one revolution is recorded as the second time, where m is the total number of point markers on the transmission connector; the number of revolutions of the motor within the preset unit time is determined according to the ratio of the preset unit time to the second time, and the motor speed is determined according to the ratio of the preset unit time.

[0009] In one embodiment of the present invention, the step of determining the motor speed based on the frequency includes: when there are multiple point markers on the transmission connector, taking the first point marker recorded by the laser displacement sensor as the counting starting point; when the count value of the point marker is (m+1), recording a set of consumption time; recording a set of consumption time every time the count value reaches (n*m+1); taking the average of multiple sets of consumption time as the second time, where n is a natural number that accumulates with the number of rotations, and m is the total number of point markers on the transmission connector; determining the number of rotations of the motor within the preset unit time based on the ratio of the preset unit time to the second time; and determining the motor speed based on the number of rotations within the preset unit time.

[0010] In one embodiment of the present invention, the method further includes: determining the reciprocating frequency of the motor based on the frequency.

[0011] In one embodiment of the present invention, the step of determining the reciprocating frequency includes: when there are multiple point marks on the transmission connector and the height or depth of different point marks are different, determining the rotation direction of the motor according to the arrangement order of the point marks; and determining the reciprocating frequency according to the number of times the rotation direction is switched within a preset unit time.

[0012] The present invention also provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the motor detection method based on the test platform.

[0013] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the motor testing method based on the test platform.

[0014] The beneficial effects of the present invention are as follows: The present invention proposes a motor testing method, equipment and medium based on a testing platform. The testing platform is provided and connected to the output shaft of the motor through a transmission connector. Specific position marks are set on the output shaft. The motor speed can be accurately calculated by scanning the corresponding position marks with a laser displacement sensor. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram:

[0017] Figure 1 This is a three-dimensional structural diagram of the test platform in one embodiment of the present invention;

[0018] Figure 2 This is a side view of the test platform in one embodiment of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of a support component according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the transmission connector in one embodiment of the present invention;

[0021] Figure 5 This invention provides a motor testing method based on a testing platform, as an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of a computer device architecture provided in one embodiment of the present invention. Detailed Implementation

[0023] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0024] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0025] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0026] Please see Figure 1 , Figure 1 This is a schematic diagram of the test platform in one embodiment of the present invention. The test platform includes a support platform 05 and a handle clamping unit 03 mounted on the support platform 05. The handle clamping unit 03 can be mounted on the support platform 05 via a slide rail, facilitating adjustment of its position on the support platform 05. A mounting slot can be provided on the handle clamping unit 03, and a medical power handle 04 equipped with a motor can be detachably placed in the mounting slot for clamping and fixing. The medical power handle 04 is used in surgical power devices. The output shaft of the motor can extend from one side of the handle clamping unit 03. The output shaft of the motor can also be connected to a transmission connector 02 through the output interface of the medical power handle 04. The output interface of the medical power handle 04 refers to the connection port for connecting the medical power handle 04 to surgical tools (such as drills, milling cutters, saw blades, grinding heads, planers, etc.). The transmission connector 02 can adopt a straight cylindrical structure, with one end connected to the output shaft and the other end providing an interface for connecting other loads, adaptable to different load interfaces to meet different testing requirements. During the speed test, the end of the transmission connector 02 facing away from the motor can also be suspended. The laser displacement sensor 06 is located to the side of the transmission connector 02, so that the transmission connector 02 is within the scanning area of ​​the laser displacement sensor 06. When the motor output shaft drives the transmission connector 02 to rotate synchronously, the laser displacement sensor 06 scans the position marks on the circumference of the transmission connector 02 and records the frequency of the position marks appearing during the rotation, including the time when the position mark is first scanned and the number of times the position mark appears during the test period.

[0027] Please see Figure 2In one embodiment, the motor output shaft is connected to a transmission connector 02, and the laser displacement sensor 06 is mounted on a support assembly and located on one side of the transmission connector 02. The transmission connector 02 is provided with position marks 01 for cooperating with the laser displacement sensor 06; the position marks 01 can be recessed or convex. The positions of the laser displacement sensor 06 and the handle clamping unit 03 on the support platform 05 along the first direction are adjustable, facilitating spacing adjustment. When adjustment is required, they do not need to be disassembled and reinstalled as in the prior art.

[0028] In an exemplary embodiment, a T-slot 051 is provided on the support platform 05 along a first direction, and multiple T-slots 051 are arranged parallel to each other along a second direction. The handle clamping unit 03 and the support assembly are both installed on the support platform 05 through the T-slots 051 and fasteners (not shown). At least one of the handle clamping unit 03 and the support assembly is adjustable in position along the first direction on the support platform 05 to adjust the relative distance between them along the first direction, i.e., they move closer or further apart. In this example, both the handle clamping unit 03 and the support assembly are adjustable along the first direction.

[0029] Please see Figure 3 The support assembly includes a support base 41 mounted on a support platform 05 and a support frame 42 adjustablely mounted on the support base 41 in a second direction. A mounting hole 421 is provided on the support frame 42 for connecting the transmission connector 02. Specifically, the support frame 42 is provided with two opposing clamping parts 422, with a gap 423 between the two clamping parts 422. An arc-shaped groove or a semi-circular groove is provided on the opposite side of the two clamping parts 422 so that the mounting hole 421 is formed in a circle between the two clamping parts 422. Locking holes 424 are correspondingly provided on the two clamping parts 422. The clamping parts 422 are connected by locking components (such as bolts) passing through the locking holes 424.

[0030] In an exemplary embodiment, the support assembly 42 is further provided with a second hole 425 for mounting a laser displacement sensor 06. The laser displacement sensor 06 is fixed to the side of the support assembly through the second hole 425 and is used to scan the transmission connector 02 between the support assembly 42 and the handle clamping unit 03.

[0031] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of a transmission connector in one embodiment of the present invention. A dot mark 01 is provided circumferentially on the transmission connector 02. This dot mark 01 can be a groove or a protrusion. Figure 2The diagram only shows a single groove as a position marker 01. In practical applications, two, three, or more position markers 01 can be set, depending on the specific situation. With multiple position markers 01, even if the motor only rotates half a revolution, effective identification is possible, ensuring the accuracy of speed calculation. When the laser passes through the groove or protrusion, there will be a backlash difference between the scanning results and other non-position marker areas on the circumferential direction of the transmission connector 02. This backlash difference needs to be greater than the deviation value that the laser displacement sensor 01 can recognize. This deviation value can be used as a preset threshold. When the backlash difference exceeds the preset threshold, a position marker 01 is recorded.

[0032] Please see Figure 5 , Figure 5 A motor testing method based on a testing platform, provided in an embodiment of the present invention, includes the following steps:

[0033] Step S500: Scan the point marker using the laser displacement sensor;

[0034] In one embodiment, there is a certain distance between the laser displacement sensor and the transmission connector. The light emitted by the laser displacement sensor illuminates the circumferential surface of the transmission connector, and the transmission connector reflects the light back to the laser displacement sensor. The laser displacement sensor calculates the distance of light transmission based on the time it takes to receive the reflected light. Is the distance detected by the laser displacement sensor at the marked point greater or less than the distance without a marked point? The difference between the two distances is then used as the return distance.

[0035] Step S510: Record the frequency of the position mark appearing during the rotation of the motor.

[0036] In one embodiment, to reduce the impact of the distance deviation between the unmarked area on the transmission connector and the laser displacement sensor, a setting can be made so that a mark is only considered detected when the backlash difference exceeds a preset threshold, and the mark count is incremented once. This allows the frequency of mark occurrence throughout the entire test process to be obtained.

[0037] Step S310: Determine the rotational speed of the motor based on the frequency.

[0038] In one embodiment, when there is only one position mark on the transmission connector, the occurrence times of any two adjacent position marks can be obtained based on the frequency information recorded by the laser displacement sensor. The corresponding time interval can then be calculated, and this time interval is designated as the first time, representing the time it takes for the motor to complete one revolution. The unit time can be set to 1 second. Dividing the unit time by the first time gives the number of revolutions the motor makes per unit time, which is the motor speed. Of course, the unit time can also be set to minutes or hours, depending on the specific application requirements; this is not a limitation here. For example, the calculation process can be expressed as: speed n = N / T, where N is the preset number of revolutions per unit time, determined by the ratio of the preset unit time to the first time; T is the preset unit time. For instance, if the motor takes 0.001 seconds to complete one revolution, and the preset unit time is 1 second, then the number of revolutions the motor makes in 1 second is N = 1 / 0.001, which is 1000 revolutions, corresponding to a speed of 1000 revolutions per second. This is only an example; the specific speed can be determined based on the actual calculation results.

[0039] In one embodiment, to ensure the accuracy of the speed calculation result, the scanning times of any two adjacent point markers can be grouped together. Each group can calculate a time interval. Multiple groups of point marker time intervals can be randomly selected, averaged, and the average value is used as the first time. The motor speed is then calculated based on this first time. For example, the first time... Where t i Let be the interval time for the i-th group of point markers, and g be the number of groups involved in the calculation. The rotational speed calculation process can be expressed as: rotational speed n = N / T, where N is the number of revolutions per preset unit time, determined by the ratio of the preset unit time to the first time t0; and T is the preset unit time. For example, if the motor takes 0.001 seconds to rotate one revolution, and the preset unit time is 1 minute, then the number of revolutions the motor makes in 1 minute is N = 60 / 0.001, which is 60,000 revolutions, corresponding to a rotational speed of 60,000 revolutions per minute.

[0040] In one embodiment, taking a transmission connector with three position marks as an example, the three position marks are evenly distributed around the circumference of the transmission connector. The laser displacement sensor starts counting when it scans the first position mark. Afterward, the count value is incremented by one for each subsequent position mark scanned. When the count value is 4, it indicates that the laser displacement sensor has completed one rotation. The time for one rotation is recorded as the second time. Dividing the set unit time by the second time yields the motor speed. For example, the calculation process can be expressed as: speed n = N / T, where N is the number of rotations per preset unit time, determined by the ratio of the preset unit time to the first time; T is the preset unit time. For instance, if the motor takes 0.001 seconds to rotate one revolution, and the preset unit time is 1 minute, then the number of rotations the motor makes in 1 minute is N = 60 / 0.001, or 60,000 revolutions, corresponding to a speed of 60,000 revolutions per minute.

[0041] In one embodiment, to improve the accuracy of speed detection, the time taken to complete one revolution can be recorded every time the count value reaches (n*m+1). Here, n is a natural number starting from 1, and its value increments by 1 for each motor revolution; m is the number of markers on the transmission connector. Taking three markers on the transmission connector as an example, the time taken to complete one revolution is recorded when the count values ​​are 4, 7, 10, 13, 16, etc. The average of the recorded times is used to obtain a second time, and the corresponding motor speed is then calculated based on this second time. For example, the second time... Where t j Let k be the time taken to complete the j-th rotation, and k be the number of time intervals used in the calculation. The rotational speed calculation can be expressed as: Rotational speed n = N / T, where N is the number of rotations per preset unit time, determined by the ratio of the preset unit time to the first time t0; and T is the preset unit time. For example, if the motor takes 0.001 seconds to complete one rotation, and the preset unit time is 1 minute, then the number of rotations the motor makes in 1 minute is N = 60 / 0.001, which is 60,000 revolutions, corresponding to a rotational speed of 60,000 revolutions per minute.

[0042] In one embodiment, when multiple point markers exist on the transmission connector, these point markers can have different heights or depths. Taking a groove as an example, and setting three point markers as examples, these three point markers are denoted as A, B, and C. The depth of A is greater than the depth of B, and the depth of B is greater than the depth of C. The three point markers are arranged in descending order of depth on the circumference of the transmission connector. The depth difference between any two of the three point markers is within the recognizable range of the laser displacement sensor. The laser displacement sensor considers the motor to be rotating forward when the difference between two adjacent backlashes obtained from scanning satisfies the condition that the depths of the three point markers change according to the arrangement order of A, B, C. If the depths of the three point markers change according to the arrangement order of A, C, B, C, the motor is considered to be rotating in reverse. The number of forward rotations and reverse rotations, as well as the number of switching between forward and reverse rotations, are recorded to obtain the reciprocating frequency of the motor. For example, the reciprocating frequency calculation process can be expressed as f = A / T, where A is the number of forward and reverse rotation switching, and T is a preset unit time.

[0043] Based on the above technical solution of the present invention, it is only necessary to set corresponding point marks in the transmission connection to accurately detect the speed and reciprocating frequency of the motor. The detection accuracy is high, and motors that are stable in operation and can meet the actual application requirements can be screened out.

[0044] This application also provides a machine-readable medium storing one or more modules (programs) that, when applied to a device, enable the device to execute embodiments of this application. Figure 3 The instructions for the steps included in the motor testing method based on the test platform are as follows. The machine-readable medium can be any usable medium that a computer can store, or a data storage device such as a server or data center that integrates one or more usable media. The usable medium can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives (SSDs)).

[0045] See Figure 4 This embodiment provides a computer device 80, which can be a desktop computer, a portable computer, a smartphone, or other devices. Specifically, the computer device 80 includes at least a memory 82 and a processor 83 connected via a bus 81. The memory 82 stores computer programs, and the processor 83 executes the computer programs stored in the memory 82 to perform all or part of the steps in the aforementioned method embodiments.

[0046] The system bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. The communication interface is used to enable communication between the database access device and other devices (e.g., clients, read-write libraries, and read-only libraries). Memory may include Random Access Memory (RAM) and may also include non-volatile memory, such as at least one disk storage device.

[0047] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A motor testing method based on a testing platform, characterized in that, The testing platform includes a handle clamping unit, a transmission connector, and a laser displacement sensor. A medical power handle carrying the motor to be tested is mounted on the handle clamping unit, and the output shaft of the motor is connected to the transmission connector through the output interface of the medical power handle to drive the transmission connector to rotate synchronously in the testing state. The transmission connector is provided with circumferential dot marks, which are located in the scanning area of ​​the laser displacement sensor. The motor detection method includes: The laser displacement sensor scans the point markers; Record the frequency of the point markers appearing during the rotation of the motor; The rotational speed of the motor is determined based on the frequency.

2. The motor testing method based on a testing platform according to claim 1, characterized in that, The point marker includes a groove or a protrusion. The laser displacement sensor identifies the point marker based on the backlash generated by the groove or protrusion. When the backlash is greater than a preset threshold, the frequency of the point marker is incremented by one.

3. The motor testing method based on a testing platform according to claim 1, characterized in that, The step of determining the motor speed based on the frequency includes: When there is only a single point mark on the transmission connector, the time interval between any two adjacent point marks is determined according to the frequency and recorded as the first time, wherein the first time is used to represent the time it takes for the motor to rotate one revolution. The number of rotations of the motor within the preset unit time is determined based on the ratio of the preset unit time to the first time, and the rotational speed is determined based on the number of rotations of the motor within the preset unit time.

4. The motor testing method based on a testing platform according to claim 1, characterized in that, The step of determining the motor speed based on the frequency further includes: When there is only a single point mark on the transmission connector, the scanning times of two adjacent point marks are taken as a group, the time intervals of multiple groups of point marks are obtained, and the average value is taken as the first time. The number of rotations of the motor within the preset unit time is determined based on the ratio of the preset unit time to the first time, and the rotational speed is determined based on the number of rotations of the motor within the preset unit time.

5. The motor testing method based on a testing platform according to claim 3, characterized in that, The step of determining the motor speed based on the frequency includes: When there are multiple position marks on the transmission connector, the first position mark recorded by the laser displacement sensor is taken as the counting starting point; when the count value of the position mark is (m+1), the motor rotates one revolution, and the time of one revolution is recorded as the second time, where m is the total number of position marks on the transmission connector. The number of rotations of the motor within the preset unit time is determined based on the ratio of the preset unit time to the second time, and the rotational speed is determined based on the number of rotations of the motor within the preset unit time.

6. The motor testing method based on a testing platform according to claim 3, characterized in that, The step of determining the motor speed based on the frequency includes: When there are multiple point markers on the transmission connector, the first point marker recorded by the laser displacement sensor is taken as the counting starting point; when the count value of the point marker is (m+1), a set of consumption time is recorded. Every time the count value reaches (n*m+1), a set of consumption time is recorded. The average of multiple sets of consumption time is taken as the second time, where n is a natural number that accumulates with the number of rotations, and m is the total number of point markers on the transmission connector. The number of rotations of the motor within the preset unit time is determined based on the ratio of the preset unit time to the second time, and the rotational speed is determined based on the number of rotations of the motor within the preset unit time.

7. The motor testing method based on a testing platform according to claim 1, characterized in that, The method further includes: determining the reciprocating frequency of the motor based on the frequency.

8. The motor testing method based on a testing platform according to claim 7, characterized in that, The step of determining the reciprocating frequency of the motor based on the frequency includes: When there are multiple point marks on the transmission connector, and the height or depth of the different point marks is different, the rotation direction of the motor is determined according to the arrangement order of the point marks. The reciprocating frequency is determined based on the number of times the rotation direction is switched within the preset unit time.

9. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, when the processor executes the computer program, it implements the steps of the motor testing method based on a test platform as described in any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the motor testing method based on the test platform as described in any one of claims 1 to 8.

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