CN210720451U - Rotation speed measuring device - Google Patents
Rotation speed measuring device Download PDFInfo
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- CN210720451U CN210720451U CN201921943480.XU CN201921943480U CN210720451U CN 210720451 U CN210720451 U CN 210720451U CN 201921943480 U CN201921943480 U CN 201921943480U CN 210720451 U CN210720451 U CN 210720451U
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Abstract
The utility model provides a rotational speed survey device, include: a device to be measured, a magnetic field generating part, and a magnetic field detecting part. The device to be measured includes a rotating member and a fixed member, the rotating member is rotatable with respect to the fixed member, one of the rotating member and the fixed member is located at a center position, and the other is provided around the one. The magnetic field generating member is mounted on one of the rotating member and the fixed member, and the magnetic field detecting member is mounted on the other of the rotating member and the fixed member, so that the magnetic field generating member and the magnetic field detecting member can rotate relative to each other, and the magnetic field detecting member detects a magnetic field generated by the magnetic field generating member during the relative rotation. In the use, the pivot rotates and makes the magnetic field intensity that magnetic field generating element takes place change, and magnetic field detection unit is used for detecting the change value of magnetic field intensity to can obtain the rotational speed of waiting to survey the device, the rotational speed survey device of this kind of structure has convenient to use's advantage.
Description
Technical Field
The utility model relates to the field of automobiles, especially, relate to a rotational speed survey device.
Background
The calibration for measuring the rotating speed precision of the motor means that when the motor runs, a newly designed hardware sampling circuit and software with analysis and decoding algorithms calculate a measured rotating speed value, and the value is obtained by new hardware acquisition and new software calculation, and whether a difference exists between the measured rotating speed value and a real value needs to be detected and calibrated to obtain a more real rotating speed value.
In the prior art, newly designed hardware and software often need to be debugged and verified in a laboratory to calibrate the rotating speed. However, the laboratory can calibrate the equipment of the rotating speed, and is provided with a rack, huge capital is consumed for building the rack, a large amount of human resources are needed for using the rack, and a test plan needs to be arranged in advance for a large number of users. In addition, in the calibration process, due to the fact that the personal safety problem of workers is considered, the workers cannot enter a testing laboratory, when the personnel needs to be set to be adjusted, the operation is very inconvenient, the workload is increased, and time node control is difficult to achieve.
Therefore, the rotation speed measuring device in the prior art has the problem of inconvenient use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the rotation speed measuring device in the technology is inconvenient to use. Therefore, the utility model provides a rotational speed survey device has convenient to use's advantage.
In order to solve the above problem, an embodiment of the present invention discloses a rotational speed measuring device, including:
a device to be measured that includes a rotating member and a fixed member, the rotating member being rotatable relative to the fixed member, one of the rotating member and the fixed member being located at a center position, and the other of the rotating member and the fixed member being provided around the one of the rotating member and the fixed member;
a magnetic field generating member mounted on one of the rotating member and the fixed member, and a magnetic field detecting member mounted on the other of the rotating member and the fixed member, so that the magnetic field generating member and the magnetic field detecting member can rotate relative to each other; wherein the content of the first and second substances,
the magnetic field detection unit detects the magnetic field generated by the magnetic field generation unit during the relative rotation.
Adopt above-mentioned technical scheme, the utility model provides a this kind of rotational speed survey device is through setting up magnetic field generation portion in the pivot of waiting to survey the device, the pivot is rotated and is made the magnetic field intensity that magnetic field generation part takes place to change, magnetic field detection part is used for detecting the change value of magnetic field intensity, thereby can obtain the rotational speed of waiting to survey the device, wait to survey the device rotational speed through such structure survey, because magnetic field generation part and magnetic field detection part are the common component of technical personnel in the field, and the volume is less, still have portable's advantage, therefore, the utility model provides a rotational speed survey device has convenient to use's advantage.
Further, another embodiment of the present invention provides a rotation speed measuring device, further comprising a display component, wherein the display component is disposed on one side of the magnetic field detection component, and is electrically connected to the magnetic field detection component, so as to display the detection value of the magnetic field detection component.
By adopting the technical scheme, the display part is electrically connected with the magnetic field detection part, and the display part can display the change value of the magnetic field intensity detected by the magnetic field detection part, so that a user can more intuitively obtain the rotating speed of the device to be measured.
Further, another embodiment of the present invention provides a rotation speed measuring device, wherein the rotating part is a rotating shaft of the device to be measured, and the fixing part is a housing around the rotating shaft; and the number of the first and second electrodes,
the magnetic field generating component is a permanent magnet or an electromagnet and is arranged at the end part of the rotating shaft, and the rotating shaft rotates to drive the magnetic field generating component to form a rotating magnetic field;
the magnetic field detection part is a magnetic field detection sensor or an electromagnetic coil and is arranged on the fixed part, and the magnetic field detection part and the magnetic pole generation part are arranged in a centering manner so as to detect the spin value of the rotating magnetic field.
Adopt above-mentioned technical scheme, the utility model provides a rotating member is for treating the pivot of survey device, and magnetic field generation part is permanent magnet or electromagnet, and magnetic field detection part is magnetic field detection sensor or solenoid, and in the use, the pivot drives magnetic field generation part (permanent magnet or electromagnet promptly) and rotates to form rotating magnetic field, and magnetic field detection part (cyclic annular magnetic field detection sensor or solenoid promptly) can sense the spin value of rotating magnetic field's magnetic field intensity, and then can obtain the rotational speed of waiting to survey the device according to the spin value.
Further, another embodiment of the present invention provides a rotation speed measuring device, wherein the rotating component is a fan blade disposed at an end of a rotating shaft of the device to be measured, the fan blade rotates along with the rotation of the rotating shaft, and the fixing component is a housing around the rotating shaft;
the magnetic field generating component is a permanent magnet or an electromagnet and is arranged on the fan blade, and the rotating shaft rotates to drive the fan blade to rotate so that the magnetic field generating component forms a rotating magnetic field;
the magnetic field detection part is a magnetic field detection sensor or an electromagnetic coil and is arranged on the fixed part, and the magnetic field detection part and the magnetic field generation part are arranged in central symmetry so as to detect the rotation value of the rotating magnetic field.
Adopt above-mentioned technical scheme, the rotating member is for setting up in the flabellum of waiting to survey the pivot tip of device, and the pivot can drive the flabellum rotation at the rotation in-process, and then makes magnetic field generation unit form the rotating magnetic field, and the setting of this kind of structure is because the rotation state of flabellum is compared and is rotated more obviously in the pivot, consequently can make the spin value of rotating magnetic field intensity more obvious, and consequently, the rotational speed survey device's of this kind of structure detected value is more accurate.
Further, another embodiment of the present invention provides a rotation speed measuring device, further comprising a speed sensor, wherein the speed sensor is disposed on the rotating member to detect a rotation speed of the rotating member; and the number of the first and second electrodes,
the speed sensor is also electrically connected with the display part, and the display part displays the detection value of the speed sensor.
Adopt above-mentioned technical scheme, the utility model provides a rotational speed measuring device still includes speedtransmitter, but speedtransmitter direct detection rotating part's rotational speed, and then realizes treating the rotational speed survey of survey device, and the setting of this kind of structure can make the utility model provides a rotational speed measuring device detectable arrives another group's rotational speed of treating the survey device, and then can be so that rotational speed measuring device detectable more accurate rotational speed value.
Further, another embodiment of the present invention provides a rotation speed measuring device, further comprising a light reflecting component and a laser sensor, wherein the light reflecting component is mounted on the fan blade, and the laser sensor is disposed on the fixing component and opposite to the light reflecting component to detect the rotation speed of the light reflecting component; and the number of the first and second electrodes,
the laser sensor is also electrically connected with the display part, and the display part displays the detection value of the laser sensor.
By adopting the technical scheme, the reflecting component can reflect the tube bundle emitted by the laser sensor, so that the detection sensitivity of the laser sensor is higher.
Further, another embodiment of the present invention provides a rotational speed measuring device, wherein the reflective member is a reflective sheet, and the reflective sheet is mounted on the fan blade in an adhesive manner.
Adopt above-mentioned technical scheme, reflection of light part sets up to reflection of light piece, and reflection of light piece is installed on the flabellum with sticky connected mode, because reflection of light piece's structure is comparatively simple, and be the common spare part of technical staff in the field. Therefore, the utility model provides a reflection of light part set up to this kind of structure can make rotational speed survey device's structure simpler.
Further, another embodiment of the present invention provides a tachometer apparatus, wherein the display unit includes a display screen.
Adopt above-mentioned technical scheme, display element includes the display screen, because the display screen is the common display structure of technical personnel in the field, the utility model provides a display element sets up the display screen and can make the utility model provides a rotational speed survey device's structure is simpler.
Further, another embodiment of the present invention provides a rotation speed measuring device, which further comprises a control switch, wherein the control switch is disposed on one side of the laser sensor, and the control switch is respectively connected to the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor electrically, so as to control the closing or starting of the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor.
By adopting the technical scheme, the control switch can control the closing or starting of the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor, and each part is not required to be controlled independently manually, so that the use is more convenient.
In addition, other features and corresponding advantages of the present invention will be set forth in part in the description which follows, and it is to be understood that at least some of the advantages will be apparent from the description of the invention.
Drawings
Fig. 1 is a schematic front view of a rotational speed measuring device according to an embodiment of the present invention;
fig. 2 is a schematic left-view structural diagram of a rotational speed measuring device according to an embodiment of the present invention;
fig. 3 is a schematic view of an operating principle of a rotational speed measuring device according to an embodiment of the present invention.
Description of reference numerals:
100: a device to be tested; 110: a rotating member; 120: a fixing member;
200: a magnetic field generating member; 210: rotating the magnetic field;
300: a magnetic field detection unit;
400: a fan blade;
500: and (5) calibrating the design plate.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
A rotation speed measuring apparatus according to an embodiment of the present invention, as shown in fig. 1 to 3, includes: a device to be measured 100, a magnetic field generating means 200, and a magnetic field detecting means 300.
Specifically, in the present embodiment, the device to be measured 100 includes the rotating member 110 and the fixed member 120, and the rotating member 110 is rotatable with respect to the fixed member 120, and one of the rotating member and the fixed member is located at a central position and the other is provided around the one.
More specifically, in the present embodiment, the magnetic field generating member 200 is mounted on one of the rotating member 110 and the fixed member 120, and the magnetic field detecting member 300 is mounted on the other of the rotating member 110 and the fixed member 120, so that the magnetic field generating member 200 and the magnetic field detecting member 300 can rotate relatively, and the magnetic field detecting member 300 detects the magnetic field generated by the magnetic field generating member 200 during the relative rotation.
More specifically, in the present embodiment, the device to be measured 100 may be various devices outputting power in a rotating manner, such as an electric motor, a diesel engine, a gasoline engine, and the like, which are commonly known to those skilled in the art, and the specific use thereof may be set according to actual design and use requirements, which is not limited in the present embodiment.
More specifically, in the present embodiment, in the rotating speed measuring apparatus with such a structure, during the use process, the magnetic field generating component 200 forms the rotating magnetic field 210 in the rotating process of the rotating shaft of the apparatus 100 to be measured, since the magnetic field strength of the rotating magnetic field 210 changes with the rotation of the rotating shaft and changes with the sine wave value, the magnetic field detecting component 300 can detect the rotation value (i.e. the wave value) of the magnetic field strength of the rotating magnetic field 210, which is equal to the rotating speed of the rotating shaft, and further, the rotating speed of the apparatus 100 to be measured can be obtained according to the rotation value.
More specifically, in this embodiment, when the device 100 to be measured is a motor, the motor driver may supply power to the motor at a low voltage, so as to rotate the spindle of the motor, so as to enable the magnetic field generating component 200 to form a rotating magnetic field 210, and the magnetic field detecting component 300 may detect a rotation value (i.e., a wave value) of the magnetic field strength of the rotating magnetic field 210, where the rotation value is equal to the rotation speed of the rotating shaft, so as to obtain the rotation speed of the device 100 to be measured according to the rotation value.
More specifically, in this embodiment, the motor may be a servo motor, a stepping motor, and other various types of motors commonly found by those skilled in the art, which may be specifically set according to actual design and use requirements, and this embodiment is not limited thereto.
More specifically, in this embodiment, the rotating speed measuring apparatus is provided with the magnetic field generating component 200 on the rotating shaft of the apparatus 100 to be measured, the rotating shaft rotates to change the magnetic field intensity generated by the magnetic field generating component 200, and the magnetic field detecting component 300 is used for detecting the change value of the magnetic field intensity, so as to obtain the rotating speed of the apparatus 100 to be measured.
Further, the present embodiment provides a rotation speed measuring device, further comprising a display component (not shown in the figure), disposed on one side of the magnetic field detection component 300, and electrically connected to the magnetic field detection component 300, so as to display the detection value of the magnetic field detection component 300.
Specifically, in this embodiment, the display component is electrically connected to the magnetic field detection component 300, and the display component can display the variation value of the magnetic field intensity detected by the magnetic field detection component 300, so that the user can more intuitively obtain the rotation speed of the device 100 to be measured.
More specifically, in this embodiment, the display component may be a display screen, a display panel, and other display components in various forms, which are commonly found by those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, the present embodiment provides a rotation speed measuring apparatus, wherein the rotating member 110 is a rotating shaft of the apparatus 100 to be measured, and the fixing member 120 is a housing around the rotating shaft.
Further, in the present embodiment, the magnetic field generating component 200 is a permanent magnet or an electromagnet (not shown in the figure), and is installed at an end of a rotating shaft, and the rotating shaft rotates to drive the magnetic field generating component 200 to form a rotating magnetic field 210.
Further, in the present embodiment, the magnetic field detection member 300 is a magnetic field detection sensor or an electromagnetic coil, and is mounted on the fixed member 120, and the magnetic field detection member 300 and the magnetic pole generation member are arranged in a centered manner to detect the rotation value of the rotating magnetic field 210.
Specifically, in this embodiment, the permanent magnet may be a permanent magnet in various forms such as a neodymium iron boron permanent magnet and an artificial magnetic steel, which are common to those skilled in the art, and the electromagnet may be an electromagnet in various models such as a CAT electromagnet and a CJK electromagnet, which are common to those skilled in the art, and may be set according to actual design and use requirements, which is not limited in this embodiment.
More specifically, in the present embodiment, the rotating member 110 is a rotating shaft of the device to be measured 100, and the fixed member 120 is a housing around the rotating shaft. Since the casing of the device 100 to be measured is stationary, the casing is used as the fixing member 120 in this embodiment, and there is no need to separately provide the fixing member 120, which can further save the manufacturing cost of the rotation speed measuring device in this embodiment.
More specifically, in this embodiment, the magnetic field detection sensor may be any one of various types of magnetic field detection sensors, such as a MEMS magnetic field detection sensor and an acelnna magnetic field detection sensor, which are commonly used by those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
The electromagnetic coil may be any one of various types of electromagnetic coils, such as a vigers electromagnetic coil and a CNEX electromagnetic coil, which are commonly found by those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
More specifically, in this embodiment, the rotating component 110 is a rotating shaft of the device 100 to be measured, the magnetic field generating component 200 is a permanent magnet or an electromagnet, and the magnetic field detecting component 300 is a magnetic field detecting sensor or an electromagnetic coil, during use, the rotating shaft drives the magnetic field generating component 200 (i.e., the permanent magnet or the electromagnet) to rotate to form a rotating magnetic field 210, the magnetic field detecting component 300 (i.e., the annular magnetic field detecting sensor or the electromagnetic coil) can sense a rotation value of the magnetic field strength of the rotating magnetic field 210, and then the rotating speed of the device 100 to be measured can be obtained according to the rotation value.
Further, in the present embodiment, the rotating member 110 is a fan blade 400 disposed at an end of a rotating shaft of the device 100 to be measured, the fan blade 400 rotates along with the rotation of the rotating shaft, and the fixing member 120 is a housing around the rotating shaft.
Further, in the present embodiment, the magnetic field generating component 200 is a permanent magnet or an electromagnet and is mounted on the fan blade 400, and the rotation of the rotating shaft drives the fan blade 400 to rotate so that the magnetic field generating component 200 forms the rotating magnetic field 210.
Further, in the present embodiment, the magnetic field detection member 300 is a magnetic field detection sensor or an electromagnetic coil, and is mounted on the fixed member 120, and the magnetic field detection member 300 and the magnetic field generation member 200 are arranged in central symmetry to detect the rotation value of the rotating magnetic field 210.
Specifically, in this embodiment, the rotating part 110 is a fan blade 400 disposed at the end of the rotating shaft of the device 100 to be measured, the rotating shaft drives the fan blade 400 to rotate during the rotation process, and further the magnetic field generating part 200 forms the rotating magnetic field 210, and the rotating state of the fan blade 400 is more obvious than the rotation of the rotating shaft, so that the rotation value of the magnetic field intensity of the rotating magnetic field 210 is more obvious, and therefore, the detection value of the rotating speed measuring device with the structure is more accurate.
More specifically, in this embodiment, the number of the fan blades 400 may be 2, 4, or other numbers, and the fan blades 400 may be symmetrically arranged, and the number and the arrangement mode of the specific arrangement may be set according to actual design and use requirements, which is not limited in this embodiment.
More specifically, in this embodiment, the arrangement types of the permanent magnet, the electromagnet, the magnetic field detection sensor, and the electromagnetic coil are similar to those described above, and the specific arrangement manner thereof can be referred to above, which is not described again in this embodiment.
Further, the present embodiment provides a rotation speed measuring apparatus, which further includes a speed sensor (not shown in the figure) disposed on the rotating member 110 to detect the rotation speed of the rotating member 110.
Furthermore, in the present embodiment, the speed sensor is further electrically connected to the display unit, and the display unit displays the detection value of the speed sensor.
Specifically, in this embodiment, the rotation speed measuring device further includes a speed sensor, the speed sensor can directly detect the rotation speed of the rotating component 110, so as to measure the rotation speed of the device 100 to be measured, and the arrangement of such a structure can enable the rotation speed measuring device in this embodiment to detect another set of rotation speeds of the device 100 to be measured, so as to enable the rotation speed measuring device to detect a more accurate rotation speed value.
More specifically, in this embodiment, the speed sensor may be any one of various types of speed sensors, such as a GARMIN speed sensor, an SPD61 speed sensor, an MSP6731 speed sensor, and the like, which are commonly known to those skilled in the art, and the speed sensor may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, the present embodiment provides a rotation speed measuring apparatus, which further includes a light-reflecting component and a laser sensor (not shown in the figure), wherein the light-reflecting component is installed on the fan blade 400, and the laser sensor is disposed on the fixing component 120 and is opposite to the light-reflecting component to detect the rotation speed of the light-reflecting component.
Furthermore, in this embodiment, the laser sensor is further electrically connected to the display unit, and the display unit displays the detection value of the laser sensor.
Specifically, in this embodiment, the light reflecting member can reflect the tube bundle emitted by the laser sensor, so that the detection sensitivity of the laser sensor is higher.
More specifically, in this embodiment, the laser sensor may be configured as various types of sensors, such as LWF-100-a1 laser sensor and LS-400 laser sensor, which are commonly known to those skilled in the art, and may be specifically set according to actual and usage requirements, which is not limited in this embodiment.
Further, another embodiment of the present invention provides a rotation speed measuring device, wherein the light reflecting member is a light reflecting sheet, and the light reflecting sheet is mounted on the fan blade 400 by adhesive bonding.
Specifically, in this embodiment, the light-reflecting component is a light-reflecting sheet, and the light-reflecting sheet is mounted on the fan blade 400 in an adhesive connection manner, because the structure of the light-reflecting sheet is simpler, and the light-reflecting sheet is a common component of those skilled in the art. Therefore, the arrangement of the light reflecting member in the present embodiment can make the structure of the revolution speed measuring device simpler.
More specifically, in this embodiment, the reflector may be any one of reflectors made of various reflective materials, such as glass and plastic, which are commonly known to those skilled in the art, and the reflector may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, another embodiment of the present embodiment provides a rotation speed measuring device, and the display unit includes a display screen (not shown in the figure).
Specifically, in this embodiment, the display component includes a display screen, and since the display screen is a display structure that is common to those skilled in the art, the structure of the rotational speed measurement apparatus in this embodiment can be simpler by providing the display screen on the display component in this embodiment.
More specifically, in this embodiment, the display screen may be a display screen in various forms, such as an LED display screen and an LCD display screen, which are commonly found by those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, this embodiment provides a rotational speed survey device, and the rotational speed survey device still includes control switch, and control switch sets up in laser sensor's one side, and control switch respectively with magnetic field detection sensor, display screen, speed sensor and laser sensor electric connection to control closing or the start-up of magnetic field detection sensor, display screen, speed sensor and laser sensor.
Specifically, in this embodiment, the control switch can control the closing or starting of the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor, and each component does not need to be controlled manually and independently, so that the use is more convenient.
More specifically, in this embodiment, the control switch may be set to various types of control switches, such as an LCUS series control switch and a JST series control switch, which are commonly found by those skilled in the art, and may be specifically set according to actual design and use requirements, which is not limited in this embodiment.
Further, the present embodiment provides a rotational speed measuring apparatus, which further includes a board 500 to be calibrated, where the board 500 to be calibrated includes a memory and a processor (not shown in the figure), the memory is in communication with the processor, and a signal input end of the processor is further in communication with the magnetic field detection sensor, the speed sensor, and the laser sensor.
Specifically, in this embodiment, the magnetic field detection sensor, the speed sensor and the laser sensor all transmit detected rotation speed signals to the processor, the memory stores the designed rotation speed of the device to be detected, the memory transmits the designed rotation speed to the processor, and the processor compares the detected rotation speed with the designed rotation speed of the device to be detected respectively by the magnetic field detection sensor, the speed sensor and the laser sensor to obtain the difference value between the actual rotation speed and the designed rotation speed of the device to be detected.
More specifically, in this embodiment, the processor is further electrically connected to the display unit, and transmits the difference obtained by comparison to the display unit for displaying, so as to prompt the user to debug the rotation speed of the device 100 to be measured.
The present embodiment provides a rotation speed measuring apparatus, as shown in fig. 1 to 3, including: a device to be measured 100, a magnetic field generating means 200, and a magnetic field detecting means 300. The device to be measured 100 includes a rotating member 110 and a fixed member 120, and the rotating member 110 is rotatable with respect to the fixed member 120, and one of the rotating member and the fixed member is located at a center position and the other is provided around the one. The magnetic field generating member 200 is mounted on one of the rotating member 110 and the fixed member 120, and the magnetic field detecting member 300 is mounted on the other of the rotating member 110 and the fixed member 120, so that the magnetic field generating member 200 and the magnetic field detecting member 300 can relatively rotate, and the magnetic field detecting member 300 detects the magnetic field generated by the magnetic field generating member 200 during the relative rotation. In the using process, the rotating speed measuring device is provided with the magnetic field generating part on the rotating shaft of the device 100 to be measured, the rotating shaft rotates to enable the magnetic field intensity generated by the magnetic field generating part 200 to change, the magnetic field detecting part 300 is used for detecting the change value of the magnetic field intensity, so that the rotating speed of the device 100 to be measured can be obtained, the rotating speed of the device 100 to be measured is measured through the structure, and the magnetic field generating part 200 and the magnetic field detecting part 300 are common elements for technicians in the field and have the advantages of small volume and portability, so the rotating speed measuring device in the embodiment has the advantage of convenience in use.
Further, the rotation speed measuring device provided in this embodiment may measure a device that outputs power in a rotating manner in the form of a motor, diesel oil, or the like, and a specific application scenario thereof may be set according to an actual design and a use requirement, which is not limited in this embodiment.
Furthermore, the rotational speed measuring device provided by the embodiment not only has a simple structure, but also can measure a plurality of groups of rotational speeds of the device 100 to be measured simultaneously, and the rotational speed measuring device with the structure can enable a user to measure the rotational speed of the device 100 to be measured more conveniently and accurately.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A rotational speed measuring apparatus, comprising:
a device to be measured that includes a rotating member and a fixed member, the rotating member being rotatable relative to the fixed member, one of the rotating member and the fixed member being located at a center position, and the other of the rotating member and the fixed member being provided around the one of the rotating member and the fixed member;
a magnetic field generating member mounted on one of the rotating member and the fixed member, and a magnetic field detecting member mounted on the other of the rotating member and the fixed member, so that the magnetic field generating member and the magnetic field detecting member can rotate relative to each other; wherein the content of the first and second substances,
the magnetic field detection unit detects the magnetic field generated by the magnetic field generation unit during the relative rotation.
2. A rotation speed measuring apparatus according to claim 1, further comprising a display unit provided on one side of the magnetic field detecting unit and electrically connected to the magnetic field detecting unit to display a value detected by the magnetic field detecting unit.
3. A rotation speed measuring apparatus according to claim 2, wherein the rotating member is a rotating shaft of the apparatus to be measured, and the fixed member is a housing around the rotating shaft; and the number of the first and second electrodes,
the magnetic field generating component is a permanent magnet or an electromagnet and is arranged at the end part of the rotating shaft, and the rotating shaft rotates to drive the magnetic field generating component to form a rotating magnetic field;
the magnetic field detection part is a magnetic field detection sensor or an electromagnetic coil and is arranged on the fixed part, and the magnetic field detection part and the magnetic field generation part are arranged in a centering manner so as to detect the rotation value of the rotating magnetic field.
4. A rotation speed measuring apparatus according to claim 2, wherein the rotating member is a fan blade provided at an end portion of a rotating shaft of the apparatus to be measured, the fan blade rotates with the rotation of the rotating shaft, and the fixing member is a housing around the rotating shaft;
the magnetic field generating component is a permanent magnet or an electromagnet and is arranged on the fan blade, and the rotating shaft rotates to drive the fan blade to rotate so that the magnetic field generating component forms a rotating magnetic field;
the magnetic field detection part is a magnetic field detection sensor or an electromagnetic coil and is arranged on the fixed part, and the magnetic field detection part and the magnetic field generation part are arranged in central symmetry so as to detect the rotation value of the rotating magnetic field.
5. A rotation speed measuring apparatus according to claim 4, further comprising a speed sensor provided on the rotating member to detect a rotation speed of the rotating member; and the number of the first and second electrodes,
the speed sensor is also electrically connected with the display part, and the display part displays the detection value of the speed sensor.
6. A rotation speed measuring apparatus according to claim 5, further comprising a light reflecting member mounted on the fan blade, and a laser sensor provided on the fixed member and disposed opposite to the light reflecting member to detect a rotation speed of the light reflecting member; and the number of the first and second electrodes,
the laser sensor is also electrically connected with the display part, and the display part displays the detection value of the laser sensor.
7. A tachometry apparatus as claimed in claim 6, wherein the light-reflecting member is provided as a light-reflecting patch and the light-reflecting patch is mounted to the fan blade by adhesive attachment.
8. A tachometry apparatus as claimed in claim 7, in which the display means comprises a display screen.
9. A tachometry apparatus as claimed in claim 8, further comprising a control switch disposed at one side of the laser sensor, and the control switch is electrically connected to the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor respectively to control the turning-off or turning-on of the magnetic field detection sensor, the display screen, the speed sensor and the laser sensor.
Priority Applications (1)
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| CN201921943480.XU CN210720451U (en) | 2019-11-12 | 2019-11-12 | Rotation speed measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921943480.XU CN210720451U (en) | 2019-11-12 | 2019-11-12 | Rotation speed measuring device |
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| CN210720451U true CN210720451U (en) | 2020-06-09 |
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