CN106680530A - Non-contact type rotating speed measuring apparatus - Google Patents
Non-contact type rotating speed measuring apparatus Download PDFInfo
- Publication number
- CN106680530A CN106680530A CN201710100896.4A CN201710100896A CN106680530A CN 106680530 A CN106680530 A CN 106680530A CN 201710100896 A CN201710100896 A CN 201710100896A CN 106680530 A CN106680530 A CN 106680530A
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- China
- Prior art keywords
- speed measuring
- hall sensor
- rotation
- measuring device
- rotating speed
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
Abstract
The invention discloses a non-contact type rotating speed measuring apparatus. The apparatus comprises a rotating round disc, which is arranged on a power output assembly of agricultural machinery. The circumference of the rotating round disc is provided with one or more pieces of magnetic steel. A Hall sensor is arranged right over a rotating path of the magnetic steel. The Hall sensor is connected with a detection main control board. The detection main control board is connected with a power source. The non-contact type rotating speed measuring apparatus is suitable for being used in various severe environments, is not sensitive to using environments, provides accurate measurement results, is convenient to install, saves more costs compared with a mechanical measuring mode, outputs data in a digital manner, and is convenient for integration.
Description
Technical field
The present invention relates to tachometric survey technical field, and in particular to a kind of contactless rotating speed applied in agricultural equipment
Measurement apparatus.
Background technology
Along with the mechanical step of agricultural, increasing agricultural equipment is applied, and monitors the intelligence of agricultural machinery working condition
Energy equipment is also widely used.But because the Mechanization Level of agricultural machinery lags behind electronic information level so that agricultural machinery it is each
Kind of work information needs the auxiliary to be just achieved with various sensor technologies, the presence or absence of is widely used at present line mechanics of communication,
Satellite positioning navigation technology, accelerometer measures inclination angle etc., but the measurement such as power rotating speed of assembly is exported for tractor dynamic power
Blank not yet (the various farm implements of power output assembly carry carry out operation)；Meanwhile, tractor dynamic power output assembly is constantly exposed to
Outside, high-speed rotation during operation, use environment is severe, and throughout the year by soil, dust, rainwater etc. corrodes；Therefore, it is desirable to detect assembly
Rotating speed learn its working condition, then need a kind of non-contact detection to export the device of assembly rotating speed.
Existing agro-machine monitor equipment does not cover the tachometric survey of power output assembly, existing rotating speed substantially on the market
Measurement mainly has：1st, mechanical gear measurement form, measurement result is accurate, but measurement result can only show in machinery instrument, it is impossible to
Digitlization.And design agricultural machinery transformation process, transformation with installation process complexity and poorly efficient, high cost；2nd, infrared survey form, leads to
The face of locking six or other multiaspect screws on output shaft are crossed, using infrared direct irradiation screw face, by measuring infrared external reflection
Echo measures rotating speed with the time；This metering system benefit is simple principle, is realized simply, but by infrared survey principle limit
System, can only use under excellent work condition environment, affected by environment big, such as airborne dust, and the masking such as muddy water, meeting large effect is infrared
The influence again very big to measurement result of the effective utilization of sensor, i.e. use environment；Therefore need one kind to resist and badly use
The device of the non-contact measurement rotating speed of scene.
The content of the invention
Weak point present in regarding to the issue above, the present invention provides a kind of contactless rotation-speed measuring device.
The invention discloses a kind of contactless rotation-speed measuring device, including：
Disk is rotated, the rotation disk is arranged on the power output assembly of agricultural equipment；
One or more magnet steel are installed on the circumference for rotating disk, the surface of the magnet steel rotation path or just
Lower section is provided with Hall sensor, and the Hall sensor is connected with detection master control borad, and the detection master control borad is connected with power supply.
As a further improvement on the present invention, the detection master control borad includes：According to the number that the Hall sensor is exported
The SCM system of slewing circle disk rotating speed is calculated according to pulse；
Liquid crystal display, serial line interface, GPRS module, GPS module, FLASH and indicator lamp are connected with the SCM system；
The GPRS module is connected with SIM.
As a further improvement on the present invention, the SCM system is single-chip minimum system, and it includes：Single-chip microcomputer；
Debugging interface, jtag interface, crystal oscillator and reset circuit are connected with the single-chip microcomputer.
As a further improvement on the present invention, the Hall sensor be by voltage-stablizer, Hall element, difference amplifier,
The Hall switch sensor of Schmitt trigger and output stage composition.
As a further improvement on the present invention, the Hall sensor and the spacing of the magnet steel are 1~2cm.
Compared with prior art, beneficial effects of the present invention are：
1st, used suitable for various adverse circumstances, it is insensitive to use environment；
2nd, measurement result is accurate；
3rd, it is easy for installation, mechanical measurement form is contrasted, more cost can be saved.
4th, Digital output data, are easy to integrated.
Brief description of the drawings
Fig. 1 is the structure chart of rotation-speed measuring device contactless disclosed in an embodiment of the present invention；
Fig. 2 is the system framework figure of detection master control borad in Fig. 1；
Fig. 3 is the frame diagram of SCM system in Fig. 2.
In figure：
1st, Hall sensor；2nd, magnet steel；3rd, disk is rotated；4th, master control borad is detected；5th, SCM system；6th, liquid crystal display；7、
Serial line interface；8th, GPRS module；9th, SIM；10th, GPS module；11、FLASH；12nd, indicator lamp；13rd, power supply.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
The present invention provides a kind of contactless rotation-speed measuring device, its in order to be able in severe use environment, with low
Cost, mode easy to install accurately measures agricultural machinery and rotates the precise rotation of output assembly structure, and digitizes rotating speed letter
Breath, in order to the power output situation of information-based understanding agricultural machinery, and has individual to agricultural machinery machine operating mode with reference to other information system
Unified understanding.
The physical principle that contactless rotation-speed measuring device of the invention is mainly utilized is Hall effect.
Hall effect：When electric current passes through conductor perpendicular to external magnetic field, carrier deflects, perpendicular to electric current and magnetic field
Direction can produce a complementary field, so as to conductor two ends produce electrical potential difference, this phenomenon is exactly Hall effect, this electricity
Potential difference is Hull voltage, and Hall effect should be judged using left hand rule.
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, 2, the present invention provides a kind of contactless rotation-speed measuring device, including：Hall sensor 1, magnetic
Steel 2, rotation disk 3, detection master control borad 4 and power supply 13；
The disk 3 that rotates of the invention is arranged on the power output assembly of agricultural equipment, and power output assembly often rotates one
Week, corresponding rotation disk rotational one week.One or more magnet steel 2 are installed on the circumference for rotating disk 3, a magnetic is installed
Steel can be used to measure whether power output assembly works, and installing multiple magnet steel 2 can accurately calculate the rotating speed for rotating disk 3.
The present invention is in the surface of the rotation path of magnet steel 2 or the Hall sensor for being arranged right below for output data pulse
1, Hall sensor 1 is not rotated with the rotation of disk 3 is rotated；Hall sensor 1 is put by voltage-stablizer, Hall element, difference
The Hall switch sensor of big device, Schmitt trigger and output stage composition；The output signal of linear hall element is through difference
Amplifier amplifies, and is exported square wave (switching signal) is shaped to through Schmitt trigger.
Hall sensor of the invention 1 is connected with detection master control borad 4, and detection master control borad 4 is connected with power supply 13；Detection master control
The data pulse that plate 4 is exported according to Hall sensor 1 calculates the rotating speed for rotating disk 3；Power supply 13 is detection master control borad 4 and Hall
Sensor 1 provides power supply output, and it includes PWM power supplys, LDO power supplys and electronic switch.
As shown in Fig. 2 detection master control borad 4 of the invention includes：SCM system 5, liquid crystal display 6, serial line interface 7, GPRS
Module 8, SIM 9, GPS module 10, FLASH11 and indicator lamp 12, are connected with liquid crystal display 6, serial line interface on SCM system 5
7th, GPRS module 8, GPS module 10, FLASH11 and indicator lamp 12, GPRS module 8 are connected with SIM 9.Wherein：As shown in figure 3,
SCM system 5 is single-chip minimum system, and its data pulse exported according to Hall sensor 1 is calculated and rotates turning for disk 3
Speed；SCM system 5 includes：Single-chip microcomputer, debugging interface, jtag interface, crystal oscillator and reset circuit, single-chip microcomputer connect with debugging respectively
Mouth, jtag interface, crystal oscillator are connected with reset circuit.Liquid crystal display 6 is used to show rotating speed that serial line interface 7 can to realize Hall sensor 1
With the connection of SCM system 5, the rotating speed that SCM system 5 is calculated can be transferred to agricultural machinery by GPRS module 8 and SIM 9
Other information systemses, have a unified understanding to agricultural machinery machine operating mode with reference to other information system；GPS module 10 is used to realize agriculture
Machine is accurately positioned, and FLASH11 provides store function, and indicator lamp 12 may be used to indicate the working condition of agricultural machinery.
Preferably, Hall sensor of the invention 1 and the spacing of magnet steel 2 are 1~2cm.
Preferably, single-chip microcomputer of the invention extends 1 EMMC cartridge, built-in EMMC, the maximum branch of capacity by UART interface
8GB being held, Monitoring Data is deposited during for not enabling GPRS；
GPS module is connected using serial line interface, and module connects the antenna of hull outside by thin coaxial cable, is penetrated with meeting
The need for frequency signal transmitting and receiving.
Detection supply voltage DC 12V or the DC 24V of master control borad 4, may produce high-tension electricity when starting due to equipment under test
Pulse, therefore power protecting circuit can be designed in power input, protect subsoiling to detect that master control borad is beaten from high pressure on startup
Hit and damage.
Measuring method of the invention：
Of the invention that magnet steel is being stained with the rotation disk or cylindrical edge of nonmagnetic substance, Hall sensor is placed near circle
The edge of disk or cylinder, disk or cylinder rotate a circle, and Hall sensor just exports a data pulse, and detection master control borad can
By count pulse number and pulse frequency, to calculate disk or cylinder rotating speed.
Beneficial effects of the present invention are：
1st, used suitable for various adverse circumstances, it is insensitive to use environment；
2nd, measurement result is accurate；
3rd, it is easy for installation, mechanical measurement form is contrasted, more cost can be saved.
4th, Digital output data, are easy to integrated.
The preferred embodiments of the present invention are these are only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of contactless rotation-speed measuring device, it is characterised in that including：
Disk (3) is rotated, rotation disk (3) is on the power output assembly of agricultural equipment；
On the circumference for rotating disk (3) one or more magnet steel (2) are installed, magnet steel (2) rotation path is just gone up
Side is arranged right below Hall sensor (1), and the Hall sensor (1) is connected with detection master control borad (4), the detection master control
Plate (4) is connected with power supply (13).
2. contactless rotation-speed measuring device as claimed in claim 1, it is characterised in that detection master control borad (4) bag
Include：The data pulse exported according to the Hall sensor (1) calculates the SCM system (5) for rotating disc rotation speed；
Be connected with the SCM system (5) liquid crystal display (6), serial line interface (7), GPRS module (8), GPS module (10),
FLASH (11) and indicator lamp (12)；
The GPRS module (8) is connected with SIM (9).
3. contactless rotation-speed measuring device as claimed in claim 2, it is characterised in that the SCM system (5) is
Single-chip minimum system, it includes：Single-chip microcomputer；
Debugging interface, jtag interface, crystal oscillator and reset circuit are connected with the single-chip microcomputer.
4. contactless rotation-speed measuring device as claimed in claim 1, it is characterised in that the Hall sensor (1) is
The Hall switch sensor being made up of voltage-stablizer, Hall element, difference amplifier, Schmitt trigger and output stage.
5. contactless rotation-speed measuring device as claimed in claim 1, it is characterised in that the Hall sensor (1) with
The spacing of the magnet steel (2) is 1~2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710100896.4A CN106680530A (en) | 2017-02-23 | 2017-02-23 | Non-contact type rotating speed measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710100896.4A CN106680530A (en) | 2017-02-23 | 2017-02-23 | Non-contact type rotating speed measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106680530A true CN106680530A (en) | 2017-05-17 |
Family
ID=58861273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710100896.4A Pending CN106680530A (en) | 2017-02-23 | 2017-02-23 | Non-contact type rotating speed measuring apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374916A (en) * | 2018-09-06 | 2019-02-22 | 芜湖职业技术学院 | A kind of low power consumption electric motor speed detector |
| CN110045139A (en) * | 2019-03-26 | 2019-07-23 | 天津鼎成高新技术产业有限公司 | A kind of speed measuring system based on the burst length |
| CN111273053A (en) * | 2020-01-22 | 2020-06-12 | 武汉船用机械有限责任公司 | Rotating speed measuring device for motor |
| CN114660322A (en) * | 2022-03-18 | 2022-06-24 | 陕西工业职业技术学院 | Instantaneous rotating speed fluctuation monitoring device of hydraulic system and fluctuation information acquisition method |
| CN115009791A (en) * | 2022-07-04 | 2022-09-06 | 华南农业大学 | Intelligent control system and control method for hillside orchard single-rail conveyor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374916A (en) * | 2018-09-06 | 2019-02-22 | 芜湖职业技术学院 | A kind of low power consumption electric motor speed detector |
| CN110045139A (en) * | 2019-03-26 | 2019-07-23 | 天津鼎成高新技术产业有限公司 | A kind of speed measuring system based on the burst length |
| CN111273053A (en) * | 2020-01-22 | 2020-06-12 | 武汉船用机械有限责任公司 | Rotating speed measuring device for motor |
| CN114660322A (en) * | 2022-03-18 | 2022-06-24 | 陕西工业职业技术学院 | Instantaneous rotating speed fluctuation monitoring device of hydraulic system and fluctuation information acquisition method |
| CN115009791A (en) * | 2022-07-04 | 2022-09-06 | 华南农业大学 | Intelligent control system and control method for hillside orchard single-rail conveyor |
| WO2024007603A1 (en) * | 2022-07-04 | 2024-01-11 | 华南农业大学 | Intelligent control system for monorail conveyor in hillside orchard and control method thereof |
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Address after: 101403 No. 735, Huang Kan village, nine Du River town, Huairou District, Beijing Applicant after: Beijing Jingwei material Link Technology Co., Ltd. Address before: 100089 B1 17, No. 1 Zhongguancun Avenue, Haidian District, Beijing. Applicant before: Beijing Huida Zhi Nong Technology Co., Ltd. |
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