CN206756867U - A kind of contactless rotation-speed measuring device - Google Patents
A kind of contactless rotation-speed measuring device Download PDFInfo
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- CN206756867U CN206756867U CN201720167003.3U CN201720167003U CN206756867U CN 206756867 U CN206756867 U CN 206756867U CN 201720167003 U CN201720167003 U CN 201720167003U CN 206756867 U CN206756867 U CN 206756867U
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- measuring device
- circular disc
- hall sensor
- rotating circular
- speed measuring
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Abstract
The utility model discloses a kind of contactless rotation-speed measuring device, including：Rotating circular disc, rotating circular disc are arranged on the power output assembly of agricultural equipment；One or more magnet steel are installed, the surface of magnet steel rotation path is provided with Hall sensor, and Hall sensor is connected with detection master control borad, and detection master control borad is connected with power supply on the circumference of rotating circular disc.The utility model uses suitable for various adverse circumstances, insensitive to use environment；Measurement result is accurate, easy for installation, contrasts mechanical measurement form, can save more cost；Digital output data, it is easy to integrate.
Description
Technical field
It the utility model is related to tachometric survey technical field, and in particular to a kind of to apply in the contactless of agricultural equipment
Rotation-speed measuring device.
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 due to the Mechanization Level of agricultural machinery lag behind electronic information level so that agricultural machinery it is each
Kind of work information needs to aid in just being 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, is corroded throughout the year by soil, dust, rainwater etc.；Therefore, it is desirable to detect assembly
Rotating speed learn its working condition, then need a kind of device of non-contact detection output 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 be shown in machinery instrument, can not
Digitlization.And design agricultural machinery transformation process, transformation is complicated and poorly efficient with installation process, and cost is high；2nd, infrared survey form, lead 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 that principle is simple, is realized simply, but limited by infrared survey principle
System, can only be used under excellent work condition environment, affected by environment big, as the masking such as airborne dust, muddy water, meeting large effect are infrared
The effective utilization of sensor, i.e. use environment are to measurement result and very big influence；Therefore one kind is needed to resist severe use
The device of the non-contact measurement rotating speed of scene.
Utility model content
Weak point present in regarding to the issue above, the utility model provide a kind of contactless tachometric survey dress
Put.
The utility model discloses a kind of contactless rotation-speed measuring device, including：
Rotating circular disc, the rotating circular disc are arranged on the power output assembly of agricultural equipment；
One or more magnet steel are installed, the surface of the magnet steel rotation path or just on the circumference of the rotating circular disc
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 further improvement of the utility model, the detection master control borad includes：Exported according to the Hall sensor
Data pulse calculate rotating circular disc rotating speed SCM system；
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 card.
As further improvement of the utility model, the SCM system is single-chip minimum system, and it includes：Monolithic
Machine；
Debugging interface, jtag interface, crystal oscillator and reset circuit are connected with the single-chip microcomputer.
As further improvement of the utility model, the Hall sensor is by voltage-stablizer, Hall element, differential amplification
The Hall switch sensor of device, Schmitt trigger and output stage composition.
As further improvement of the utility model, the spacing of the Hall sensor and the magnet steel is 1~2cm.
Compared with prior art, the beneficial effects of the utility model 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, it is easy to integrate.
Brief description of the drawings
Fig. 1 is the structure chart of rotation-speed measuring device contactless disclosed in a kind of embodiment of the utility model；
Fig. 2 is the system framework figure that master control borad is detected in Fig. 1；
Fig. 3 is the frame diagram of SCM system in Fig. 2.
In figure：
1st, Hall sensor；2nd, magnet steel；3rd, rotating circular disc；4th, master control borad is detected；5th, SCM system；6th, liquid crystal display；7、
Serial line interface；8th, GPRS module；9th, SIM card；10th, GPS module；11、FLASH；12nd, indicator lamp；13rd, power supply.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is part of the embodiment of the present utility model, rather than whole embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
The utility model provides a kind of contactless rotation-speed measuring device, its in order in severe use environment,
With low cost, mode easy to install, accurately measure agricultural machinery and rotate the precise rotation of output assembly structure, and digitize rotating speed
Information, in order to the power output situation of the understanding agricultural machinery of informationization, and have with reference to other information system to agricultural machinery machine operating mode
Individual unified understanding.
The physical principle that contactless rotation-speed measuring device of the present utility model mainly utilizes 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 both 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 utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, 2, the utility model provides a kind of contactless rotation-speed measuring device, including：Hall sensor
1st, magnet steel 2, rotating circular disc 3, detection master control borad 4 and power supply 13；
Rotating circular disc 3 of the present utility model is arranged on the power output assembly of agricultural equipment, every turn of power output assembly
Dynamic one week, corresponding rotating circular disc rotates one week.One or more magnet steel 2, installation one are installed on the circumference of rotating circular disc 3
Individual magnet steel can be used for whether measurement power output assembly works, and the rotating speed of rotating circular disc 3 can accurately be calculated by installing multiple magnet steel 2.
The utility model is in the surface of the rotation path of magnet steel 2 or is arranged right below passing for the Hall of output data pulse
Sensor 1, Hall sensor 1 do not rotate with the rotation of rotating circular disc 3；Hall sensor 1 is by voltage-stablizer, Hall element, difference
Divide the Hall switch sensor of amplifier, Schmitt trigger and output stage composition；The output signal warp of linear hall element
Difference amplifier amplifies, and square wave (switching signal) output is being shaped to through Schmitt trigger.
Hall sensor 1 of the present utility model is connected with detection master control borad 4, and detection master control borad 4 is connected with power supply 13；Detection
The data pulse that master control borad 4 exports according to Hall sensor 1 calculates the rotating speed of rotating circular disc 3；Power supply 13 is the detection He of master control borad 4
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 present utility model includes：SCM system 5, liquid crystal display 6, serial line interface 7,
GPRS module 8, SIM card 9, GPS module 10, FLASH11 and indicator lamp 12, liquid crystal display 6, serial is connected with SCM system 5
Interface 7, GPRS module 8, GPS module 10, FLASH11 and indicator lamp 12, GPRS module 8 are connected with SIM card 9.Wherein：Such as Fig. 3
Shown, SCM system 5 is single-chip minimum system, and its data pulse exported according to Hall sensor 1 calculates rotating circular disc 3
Rotating speed；SCM system 5 includes：Single-chip microcomputer, debugging interface, jtag interface, crystal oscillator and reset circuit, single-chip microcomputer respectively with tune
Try mouth, jtag interface, crystal oscillator is connected with reset circuit.Liquid crystal display 6 is used to show rotating speed, and serial line interface 7 can realize that Hall passes
The connection of sensor 1 and SCM system 5, the rotating speed that SCM system 5 is calculated can be transferred to by GPRS module 8 and SIM card 9
Agricultural machinery other information systemses, there is a unified understanding to agricultural machinery machine operating mode with reference to other information system；GPS module 10 is used for real
Existing agricultural machinery is accurately positioned, and FLASH11 provides store function, and indicator lamp 12 may be used to indicate the working condition of agricultural machinery.
Preferably, the spacing of Hall sensor 1 of the present utility model and magnet steel 2 is 1~2cm.
Preferably, single-chip microcomputer of the present utility model extends 1 EMMC cartridge by UART interface, and built-in EMMC, capacity is most
It is big to support 8GB, 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, to meet to penetrate
The needs of frequency signal transmitting and receiving.
Supply voltage DC 12V or the DC 24V of master control borad 4 are detected, high-tension electricity may be produced when starting due to equipment under test
Pulse, therefore power protecting circuit can be designed in power input, protect subsoiling detection master control borad to be beaten on startup from high pressure
Hit and damage.
Measuring method of the present utility model：
The utility model is being stained with magnet steel in the rotating circular disc of nonmagnetic substance or cylindrical edge, and Hall sensor, which is placed on, to be leaned on
The edge of nearly disk or cylinder, disk or cylinder rotate a circle, and Hall sensor just exports a data pulse, detects master control
Plate can calculate disk or cylinder rotating speed by count pulse number and pulse frequency.
The beneficial effects of the utility model 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, it is easy to integrate.
Preferred embodiment of the present utility model is these are only, is not limited to the utility model, for this area
Technical staff for, the utility model can have various modifications and variations.It is all within the spirit and principles of the utility model,
Any modification, equivalent substitution and improvements made etc., should be included within the scope of protection of the utility model.
Claims (5)
- A kind of 1. contactless rotation-speed measuring device, it is characterised in that including：Rotating circular disc (3), the rotating circular disc (3) are arranged on the power output assembly of agricultural equipment；One or more magnet steel (2) are installed on the circumference of the rotating circular disc (3), magnet steel (2) rotation path just on 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) of rotating circular disc rotating 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 card (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 |
|---|---|---|---|
| CN201720167003.3U CN206756867U (en) | 2017-02-23 | 2017-02-23 | A kind of contactless rotation-speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720167003.3U CN206756867U (en) | 2017-02-23 | 2017-02-23 | A kind of contactless rotation-speed measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN206756867U true CN206756867U (en) | 2017-12-15 |
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ID=60609505
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720167003.3U Active CN206756867U (en) | 2017-02-23 | 2017-02-23 | A kind of contactless rotation-speed measuring device |
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| CN (1) | CN206756867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680530A (en) * | 2017-02-23 | 2017-05-17 | 北京惠达智农科技有限公司 | Non-contact type rotating speed measuring apparatus |
-
2017
- 2017-02-23 CN CN201720167003.3U patent/CN206756867U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680530A (en) * | 2017-02-23 | 2017-05-17 | 北京惠达智农科技有限公司 | Non-contact type rotating speed measuring apparatus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 101403 No. 735, Huang Kan village, nine Du River town, Huairou District, Beijing Patentee after: Beijing Jingwei material Link Technology Co., Ltd. Address before: 100089 B1 17, No. 1 Zhongguancun Avenue, Haidian District, Beijing. Patentee before: Beijing Huida Zhi Nong Technology Co., Ltd. |