CN103792382A - Rotation speed measuring method and device - Google Patents
Rotation speed measuring method and device Download PDFInfo
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- CN103792382A CN103792382A CN201410032773.8A CN201410032773A CN103792382A CN 103792382 A CN103792382 A CN 103792382A CN 201410032773 A CN201410032773 A CN 201410032773A CN 103792382 A CN103792382 A CN 103792382A
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Abstract
The invention belongs to the technical field of vehicles, and provides a rotation speed measuring method and device. The rotation speed measuring method comprises the following steps that 1 when an object to be measured rotates, gravity induction values of a certain preset position of the object to be measured at two different time points are obtained; 2 the rotation speed of the object to be measured is calculated according to changes of the gravity induction values of the positions and the time interval T of the two time points. The rotation speed measuring method and device have the advantages that the cost is low, the size of the speed measuring device is small, the weight of the speed measuring device is low, use is simple, and convenience is brought to users.
Description
Technical field
The invention belongs to vehicle technology field, relate in particular to a kind of method and device of tachometric survey.
Background technology
The method of traditional measurement rotating speed generally adopts and on rotating mechanism, adds rotation observation device, rubbing device, Hall element etc. to measure.Above-mentioned method of testing cost is higher, and what have need to carry out special tachometric survey design to wheelwork, and above-mentioned measurement mechanism volume is larger, uses complicated.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of method and device of tachometric survey, is intended to solve the problem that existing measurement mechanism volume is large, cost is high.
The embodiment of the present invention is achieved in that a kind of method of tachometric survey, and described method comprises the steps:
When S1, object under test rotate, obtain the gravity sensing value of a certain predeterminated position of object under test two different time points;
S2, calculate the rotating speed of object under test according to the time interval T of the variation of the gravity sensing value of position and two time points.
Further, in described step S1, obtain the gravity sensing value of a certain predeterminated position of object under test by gravity sensor.
Further, described step S2 further comprises:
The angle that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The angle of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
Further, described step S2 further comprises:
The number of turns that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The number of turns of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
Further, described step S2 further comprises:
The distance that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The distance of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
The present invention also proposes a kind of device of tachometric survey, and described device comprises:
Acquisition module, while rotation, obtains the gravity sensing value of a certain predeterminated position of object under test two different time points for object under test;
Computing module, for calculating the rotating speed of object under test according to the time interval T of the variation of the gravity sensing value of position and two time points.
Further, described acquisition module obtains the gravity sensing value of a certain predeterminated position of object under test by gravity sensor.
Further, described computing module comprises:
Angle rotating speed unit, the angle of rotating for object under test described in the change calculations of the gravity sensing value by described position; And the angle of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
Further, described computing module comprises:
Number of turns rotating speed unit, the number of turns of rotating for object under test described in the change calculations of the gravity sensing value by described position; And the number of turns of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
Further, described computing module comprises:
Apart from rotating speed unit, the distance of rotating for object under test described in the change calculations of the gravity sensing value by described position; The distance of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
The embodiment of the present invention provides new tachometric survey mode, can obtain angle, distance or the number of turns that object under test turns in different time according to gravity sensor, and obtain the rotating speed of object under test according to above-mentioned numerical evaluation, embodiment of the present invention cost is low, the volume of speed measuring device is little lightweight and use simply, provides convenience to user.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for the tachometric survey that provides of the embodiment of the present invention one;
Fig. 2 proofreaies and correct schematic diagram in the method for the tachometric survey that provides of the embodiment of the present invention one;
Fig. 3 is the structural drawing of the device of the tachometric survey that provides of the embodiment of the present invention two;
Fig. 4 is the structural drawing of computing module in the device of the tachometric survey that provides of the embodiment of the present invention two.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
embodiment mono-
The embodiment of the present invention one proposes a kind of method of tachometric survey.As shown in Figure 1, the method for the embodiment of the present invention one comprises the steps:
When S1, object under test rotate, obtain the gravity sensing value of a certain predeterminated position of object under test two different time points.The embodiment of the present invention one is after object under test starts, enter wait correcting state as shown in Figure 2, suppose that device sense of rotation to be measured is for clockwise, the device of the tachometric survey of the embodiment of the present invention one is fixed on to the position A that need to survey rotating speed, button post-equalization A position on the device of triggering tachometric survey, forwards device to be measured B position to or is placed on B position along sense of rotation, arrives C position after button again, after button, arrive D position, button is proofreaied and correct and is finished.By proofreading and correct, can make gravity sensing value that A, B, C, D order in a plane, the embodiment of the present invention one for convenience of explanation, suppose that gravity sensing value is for (x, y, z) in the value of x axle constant, and the value of y axle and z axle changes along with the rotation of object under test, the gravity sensing value of y axle is in-10 to 10 variations, and the gravity sensing value of Z axis is also in-10 to 10 variations.
The initial position of supposing gravity sensor is arranged at position A, and in the time that object under test rotates, gravity sensor is along with object under test is respectively through position B, C, D.In the time of the A of position, obtaining gravity sensing value for (0,0,10), be (0,10,0) after rotation at position B, is (0,0 ,-10) to position C after rotation, rotates to position D for (0 ,-10,0), to analogize, can obtain the gravity sensing value in different time points.
S2, calculate the rotating speed of object under test according to the time interval T of the variation of the gravity sensing value of position and two time points.Get any two time points, computing time interval T, and the changing value of gravity sensing value between two time points, can obtain the rotating speed of object under test.
The rotating speed of object under test can be explained by the number of turns, the angle and distance that rotate.The number of turns of rotating with object under test in two time points is divided by time interval T, or the angle turning over object under test is divided by time interval T, or the number of turns * 2 π R/T that turn over object under test calculate torque per second from obtaining rotating speed.
The embodiment of the present invention one can be presented at rotating speed and relevant correction data on display screen.
The embodiment of the present invention one is obtained the gravity sensing value of the x, y, z axle of a certain predeterminated position of different time points object under test by gravity sensor, calculate the variation of the gravity sensing value in the time interval T of any two time points, and obtain the rotating speed of object under test by above-mentioned variation.The method of the embodiment of the present invention one is simple, and cost is low, provides convenience to user.
embodiment bis-
The embodiment of the present invention two provides a kind of device of tachometric survey.As shown in Figure 3, the device of the embodiment of the present invention two comprises acquisition module 10 and computing module 20, wherein,
When acquisition module 10 rotates for object under test, obtain the gravity sensing value of a certain predeterminated position of object under test two different time points.The embodiment of the present invention two is after object under test starts, enter wait correcting state as shown in Figure 2, suppose that device sense of rotation to be measured is for clockwise, the device of the tachometric survey of the embodiment of the present invention two is fixed on to the position A that need to survey rotating speed, button post-equalization A position on the device of triggering tachometric survey, forwards device to be measured B position to or is placed on B position along sense of rotation, arrives C position after button again, after button, arrive D position, button is proofreaied and correct and is finished.By proofreading and correct, can make gravity sensing value that A, B, C, D order in a plane, the embodiment of the present invention two for convenience of explanation, suppose that gravity sensing value is for (x, y, z) in the value of x axle constant, and the value of y axle and z axle changes along with the rotation of object under test, the gravity sensing value of y axle is in-10 to 10 variations, and the gravity sensing value of Z axis is also in-10 to 10 variations.
The initial position of supposing gravity sensor is arranged at position A, and in the time that object under test rotates, gravity sensor is along with object under test is respectively through position B, C, D.In the time of the A of position, obtaining gravity sensing value for (0,0,10), be (0,10,0) after rotation at position B, is (0,0 ,-10) to position C after rotation, rotates to position D for (0 ,-10,0), to analogize, can obtain the gravity sensing value in different time points.
The embodiment of the present invention two can be presented at rotating speed and relevant correction data on display screen.
Embodiment of the present invention two-way is crossed gravity sensor and obtains the gravity sensing value of the x, y, z axle of a certain predeterminated position of different time points object under test, calculate the variation of the gravity sensing value in the time interval T of any two time points, and obtain the rotating speed of object under test by above-mentioned variation.The device of the embodiment of the present invention two is simple, and cost is low, provides convenience to user.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a method for tachometric survey, is characterized in that, described method comprises the steps:
When S1, object under test rotate, obtain the gravity sensing value of a certain predeterminated position of object under test two different time points;
S2, calculate the rotating speed of object under test according to the time interval T of the variation of the gravity sensing value of position and two time points.
2. the method for claim 1, is characterized in that, in described step S1, obtains the gravity sensing value of a certain predeterminated position of object under test by gravity sensor.
3. the method for claim 1, is characterized in that, described step S2 further comprises:
The angle that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The angle of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
4. method as claimed any one in claims 1 to 3, is characterized in that, described step S2 further comprises:
The number of turns that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The number of turns of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
5. method as claimed any one in claims 1 to 3, is characterized in that, described step S2 further comprises:
The distance that described in the change calculations of the gravity sensing value by described position, object under test rotates;
The distance of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
6. a device for tachometric survey, is characterized in that, described device comprises:
Acquisition module, while rotation, obtains the gravity sensing value of a certain predeterminated position of object under test two different time points for object under test;
Computing module, for calculating the rotating speed of object under test according to the time interval T of the variation of the gravity sensing value of position and two time points.
7. device as claimed in claim 6, is characterized in that, described acquisition module obtains the gravity sensing value of a certain predeterminated position of object under test by gravity sensor.
8. device as claimed in claim 5, is characterized in that, described computing module comprises:
Angle rotating speed unit, the angle of rotating for object under test described in the change calculations of the gravity sensing value by described position; And the angle of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
9. the device as described in any one in claim 6 to 8, is characterized in that, described computing module comprises:
Number of turns rotating speed unit, the number of turns of rotating for object under test described in the change calculations of the gravity sensing value by described position; And the number of turns of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
10. the device as described in any one in claim 6 to 8, is characterized in that, described computing module comprises:
Apart from rotating speed unit, the distance of rotating for object under test described in the change calculations of the gravity sensing value by described position; The distance of rotating according to described object under test and time T are calculated the rotating speed of described object under test.
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| CN201410032773.8A CN103792382A (en) | 2014-01-23 | 2014-01-23 | Rotation speed measuring method and device |
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| CN201410032773.8A CN103792382A (en) | 2014-01-23 | 2014-01-23 | Rotation speed measuring method and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104502622A (en) * | 2014-12-16 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Object rotation speed measuring method and electronic equipment |
| CN109915330A (en) * | 2019-03-14 | 2019-06-21 | 埃斯倍风电科技(青岛)有限公司 | A method of axial fan hub revolving speed is measured using gravity accelerometer |
| CN110700997A (en) * | 2019-11-06 | 2020-01-17 | 重庆华昭电气设备有限公司 | Method for monitoring rotating speed of impeller of wind power pitch control system |
| CN115076048A (en) * | 2022-06-30 | 2022-09-20 | 华锐风电科技(集团)股份有限公司 | Variable pitch azimuth angle measuring method, hub rotating speed measuring method and wind generating set |
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| CN101432155A (en) * | 2006-04-28 | 2009-05-13 | 特杰有限公司 | Measuring device for vehicle data, in particular for the speed of a vehicle running on wheels |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502622A (en) * | 2014-12-16 | 2015-04-08 | 上海斐讯数据通信技术有限公司 | Object rotation speed measuring method and electronic equipment |
| CN104502622B (en) * | 2014-12-16 | 2019-06-25 | 上海斐讯数据通信技术有限公司 | A kind of object rotating speed measurement method and electronic equipment |
| CN109915330A (en) * | 2019-03-14 | 2019-06-21 | 埃斯倍风电科技(青岛)有限公司 | A method of axial fan hub revolving speed is measured using gravity accelerometer |
| CN110700997A (en) * | 2019-11-06 | 2020-01-17 | 重庆华昭电气设备有限公司 | Method for monitoring rotating speed of impeller of wind power pitch control system |
| CN115076048A (en) * | 2022-06-30 | 2022-09-20 | 华锐风电科技(集团)股份有限公司 | Variable pitch azimuth angle measuring method, hub rotating speed measuring method and wind generating set |
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Address after: 518057 Guangdong city of Shenzhen province Nanshan District Xili Street Xueyuan Road No. 1001 Chi Park B1 building 7 layer, 8 layer, 10 layer Applicant after: SHENZHEN AUTEL TECHNOLOGY CO., LTD. Address before: 518057 Guangdong city of Shenzhen province Nanshan District Xili town tea light road on the south side of Shenzhen integrated circuit design and application of Industrial Park 106, 107, 109, 114 Applicant before: Shenzhen Autel Technology Co., Ltd. |
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Application publication date: 20140514 |
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