CN202304739U - Measuring wheel used for measuring range and area - Google Patents
Measuring wheel used for measuring range and area Download PDFInfo
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- CN202304739U CN202304739U CN2011203695273U CN201120369527U CN202304739U CN 202304739 U CN202304739 U CN 202304739U CN 2011203695273 U CN2011203695273 U CN 2011203695273U CN 201120369527 U CN201120369527 U CN 201120369527U CN 202304739 U CN202304739 U CN 202304739U
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Abstract
The utility model provides a measuring wheel used for measuring range and area and belongs to the technical field of measuring wheels. The utility model solves a problem that a prior measuring wheel can not be used for measuring area. The measuring wheel used for measuring range and area includes a measuring wheel, a wheel frame arranged on the measuring wheel and a handle connected to the wheel frame. An operation display interface is arranged on the handle. A sensor used for detecting the number of turns of the measuring wheel is arranged on the wheel frame. The handle is also provided with a central processor. Both of the sensor and the operation display interface connect with the central processor. A memorizer and a geomagnetism sensor together connecting with the central processor are also arranged in the handle. The central processor is used for receiving signals of the number of turns and angle signals. And at the same time, the central processor calculates an area defined by that the measuring wheel rolls for a circle on the ground according to the circumference of the measuring wheel, the number of the turns of the measuring wheel and a steering angle of the measuring wheel, and delivers a result to the operation display interface for displaying. The measuring wheel used for measuring range and area in the utility model not only can be used for measuring range, but also can be used for measuring area directly, quickly and accurately.
Description
Technical field
The utility model belongs to the measuring wheel technical field, relates to the measuring wheel of a kind of range finding and survey area.
Background technology
Measuring wheel has another name called range finding wheel or range finding car, its basic function measured distance.In actual use, often to use existing measuring wheel to measure block area.In existing measuring wheel, still can not directly measure the area in irregular plot, one of its reason be existing measuring wheel in some does not require the field of area measurement, operational excellence is like electric wire wiring operation field etc.The acquisition distance parameter is only required in electric wire wiring operation field, promptly can foresee the electric wire what need and be used for this engineering.
Yet in another important applied field of measuring wheel, smooth etc. like land area measurement, the estimation of development of real estate area, Garden Planning, rural holding, obtain area value and be to use one of final purpose of measuring wheel.But be to use existing measuring wheel, can only obtain distance value, can't directly obtain area value.Obtain area value if desired, can only manual calculations; If institute's geodetic piece is square or limited desirable regular shapes such as rectangle or circle, existing measuring wheel remains in improved chance to reach this requirement.Such as the rectangular-shaped plot of measurement standard, existing measuring wheel can require the user to measure length earlier, and this value is stored; And then the measurement width, the area formula with the root rectangle calculates again.But actual farmland is irregular polygon mostly, like triangle, parallelogram, common quadrilateral, also has the submarginal irregular shape of minority.Existing measuring wheel product can't get into these fields on a large scale, is one and regrets.
For the product of survey area, commonly used is the GPS area measurement instrument.This series products is the area measurement instrument of rising in recent years, selects for use the high accurate GPS receiver module to be used for receiving and processing signals, after signal Processing is accomplished, and the longitude and latitude and the elevation data of output current location.The advantage of such surveying instrument is a convenient measurement, only needs around one week of tested plot measuring area value.Its defective is that (1) civilian gps satellite signal precision is limited, it is generally acknowledged that the single-point bearing accuracy of civilian gps satellite is 50 meters, and the scope of application is restricted; (2) since the high-precision GPS receiver module in a certain short period; The relative positioning precision can also satisfy the requirement of some application; But there is following shortcoming in it: gps signal receives the influence of atmospheric environment etc., and bearing accuracy is affected, and bigger drift phenomenon can occur.The GPS area measurement instrument, itself is small and exquisite, is easy to carry.But its weak point is that power consumption is bigger.Often need to change battery during use.GPS area measurement instrument price on the whole is higher; Particularly the high accurate GPS receiver module all needs import, and is expensive.
Summary of the invention
There are the problems referred to above in the utility model to existing technology; Proposed a kind of range finding and surveyed the measuring wheel of area, this measuring wheel can not only range observation, also can realize area measurement directly, quickly and accurately simultaneously; This measuring method is simple and convenient, and measuring accuracy is high.
The utility model is realized through following technical proposal: the measuring wheel of a kind of range finding and survey area; Comprise measuring wheel, be arranged on the wheel carrier on the measuring wheel and be connected the handle on the wheel carrier; On handle, be provided with the operation display interface; It is characterized in that; On wheel carrier, be provided with and detect the sensor that measuring wheel rotates the number of turns, in handle, also be provided with central processing unit, above-mentioned sensor all is connected with central processing unit with the operation display interface; In handle, also be provided with the storer and the geomagnetic sensor that are connected with central processing unit; Described central processing unit is used for receiving sensor lap signal that transports and the angle signal that the reception geomagnetic sensor transports, and calculates the area that measuring wheel rolls around ground and surrounded in a week, and carries the result to show to the operation display interface according to the girth of measuring wheel, the rotation number of turns and the measuring wheel steering angle of measuring wheel simultaneously.
This measuring wheel can be used for survey area and measure air line distance.When measuring air line distance, along straight-line rolling, through the rotation number of turns of sensor to measuring wheel, the girth according to the number of turns and measuring wheel gets final product the calculated line distance then with measuring wheel.When survey area; With starting point is the initial point of plane coordinate system; Measuring wheel begins to roll from starting point, when measuring wheel turns to, draws the steering angle of measuring wheel through geomagnetic sensor, and writes down the coordinate figure of this turning point; Write down the coordinate and the steering angle of each turning point successively according to the method respectively and be stored in the storer, when measuring wheel is got back to starting point, can confirm the area that measuring wheel rolls and surrounded in a week.In plane coordinate system, constitute straight line between adjacent 2; Each coordinate points through in steering angle and the plane coordinate system can calculate leg-of-mutton area; And these triangle area additions can be calculated the area of being asked, through central processing unit area value is shown on the operation display interface after calculating area.The operation display interface can be the display screen of band control knob or simple display screen and button.
In the measuring wheel of above-mentioned range finding and survey area, described geomagnetic sensor is three betwixt mountains Magnetic Sensors, and wherein the X-direction of geomagnetic sensor is consistent with the direction that measuring wheel rolls.With the X-direction of geomagnetic sensor be arranged to advance with measuring wheel or the direction retreated consistent, can improve accuracy of detection, simplify the formula that area calculates.
In the measuring wheel of above-mentioned range finding and survey area, also be connected with acceleration transducer on the described central processing unit, described acceleration transducer is used for correcting measuring and takes turns the angular error when turning to.
In the measuring wheel of above-mentioned range finding and survey area, described acceleration transducer is three accelerator sensors, and wherein the X-direction of acceleration transducer is parallel or vertical with the X-direction of geomagnetic sensor.
In the process that measuring wheel advances, can occurring tilting perhaps, handle swings up and down inclination; Measure the angle of inclination on X axle, Y axle or Z-direction through acceleration transducer; Through central processing unit geomagnetic sensor is carried out the pitch angle compensation then; Therefore can obtain comparatively accurate angle value, the inclination situation that particularly when turning to, produces.
In the measuring wheel of above-mentioned range finding and survey area; Described sensor is two Hall elements that are arranged side by side; On measuring wheel, be evenly equipped with some permanent magnets by circumferencial direction; And described each permanent magnet all can be relative with two above-mentioned Hall elements, and two Hall elements are in different on off states.Two Hall elements are in different state and can judge advancing of measuring wheel or retreat.Successively be respectively switch through the signal of two Hall elements at permanent magnet, then be judged to be working direction, permanent magnet successively is respectively to close through the signal of two Hall elements and opens so, then is judged to be direction of retreat.Through the judgement of forward-reverse direction, make and cancel out each other after two opposite distances stacks, therefore measuring wheel during along straight-line rolling such as offset direction can roll again, improved practicality.All be recorded as the rotation number of turns through each permanent magnet through Hall element.If 5 permanent magnets, then each signal is designated as 1/5th the number of turns.
In the measuring wheel of above-mentioned range finding and survey area, described vehicle frame is provided with the indicator device that is used in reference to the measuring wheel direct of travel.Can increase the accuracy of measuring wheel through indicator device, improve the precision of rotating direction along straight-line rolling.
In the measuring wheel of above-mentioned range finding and survey area; Described indicator device comprises that some joints are in turn connected into straight line and horizontally disposed sensing bar; Every joint points to bar and flexibly connects, and first segment points to bar and is connected on the wheel carrier, and all the other sensing bars can be contracted in next adjacent joint and point in the bar.To point to dried pulling out in use and connect into straight line, will point to dried being contracted in next adjacent joint sensing bar, when not using like the structure of telescopic antenna.
In the measuring wheel of above-mentioned range finding and survey area, described indicator device is a laser sight.
Prior art is compared, and the utlity model has following advantage:
1, this measuring wheel through the measuring wheel that uses geomagnetic sensor and central processing unit can only measure straight line be modified into can survey area measuring wheel; Make the practicality of this measuring wheel increase; And made things convenient for area measurement, convenient compared to measurement mechanisms such as GPS and measuring method.
2, this measuring wheel has also increased acceleration transducer, is used for the deviation of correcting measuring, and adopts triangle area computing method reference area in the plane coordinate system, and computational accuracy is improved.
3, this measuring wheel adopts the structure of two Hall elements not only to be used for the rotation number of turns that count measurement is taken turns, and also is used for the straight line distance of the forward-reverse of offset measurement wheel, when direct route is walked to bend, can heavily walk.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the circuit principle structure synoptic diagram of the utility model.
Fig. 3 is the sensor of the utility model and the structural representation of permanent magnet.
Among the figure, 1, measuring wheel; 2, wheel carrier; 3, handle; 4, operation display interface; 5, sensor; 6, central processing unit; 7, storer; 8, permanent magnet; 9, indicator device; 91, point to bar; 92, S type fixed sturcture; 10, geomagnetic sensor; 11, acceleration transducer.
Embodiment
Below be the specific embodiment of the utility model, and combine accompanying drawing that the technical scheme of the utility model is done further to describe, but the utility model is not limited to these embodiment.
Like Fig. 1, Fig. 2 and shown in Figure 3, the measuring wheel of this range finding and survey area comprises measuring wheel 1, is arranged on the wheel carrier 2 on the measuring wheel 1 and is connected the handle 3 on the wheel carrier 2, on handle 3, is provided with operation display interface 4, and this measuring wheel 1 can be realized area measurement.
Specifically; On wheel carrier 2, be provided with and detect the sensor 5 that measuring wheel 1 rotates the number of turns; In handle 3, also be provided with central processing unit 6; Central processing unit 6 adopts STM8L152C6, and sensor 5 all is connected with central processing unit 6 with operation display interface 4, and operation display interface 4 can be the display screen of band control knob or simple display screen and button.In handle 3, also be provided with the storer 7 and geomagnetic sensor 10 that are connected with central processing unit 6; Geomagnetic sensor 10 adopts HMC5883; This geomagnetic sensor 10 is three betwixt mountains Magnetic Sensors, and wherein the X-direction of geomagnetic sensor 10 is consistent with the direction that measuring wheel 1 rolls.Geomagnetic sensor 10 arranges in the circuit board, when layout, should be away from the material responsive to magnetic, and like the screw of irony etc., also should be when connecting up simultaneously away from the lead of big electric current.
Azimuthal computing formula is:
Hy=Ym * cos (θ)+Xm * sin (θ) sin (Ψ)-Zm * cos (Ψ) sin (θ)--the horizontal y component of-calculating earth magnetism
Hx=Xm * cos (Ψ)+Zm * sin (Ψ)--the horizontal x component of-calculating earth magnetism
Heading＝actan(Hy/Hx)。---calculate steering angle
Also be connected with acceleration transducer 11 on the central processing unit 6; Acceleration transducer 11 is ADXL345; Be three accelerator sensors, wherein the X-direction of acceleration transducer 11 is parallel or vertical with the X-direction of geomagnetic sensor 10, the angular error when being used for correcting measuring wheel 1 and turning to.Be connected through I2C or SPI interface between central processing unit 6 and geomagnetic sensor 10 and the acceleration transducer 11.Above-mentioned central processing unit 6 grades all have accumulator to supply power.Central processing unit 6 is used for lap signal that receiving sensor 5 transports and receives the angle signal that geomagnetic sensor 10 transports; Calculate the area that measuring wheel 1 rolls around ground and surrounded in a week, and carry the result to show for operation display interface 4 according to the girth of measuring wheel 1, the rotation number of turns and measuring wheel 1 steering angle of measuring wheel 1 simultaneously.
Vehicle frame is provided with the indicator device 9 that is used in reference to measuring wheel 1 direct of travel.Indicator device 9 comprises that some joints are in turn connected into straight line and horizontally disposed sensing bar 91; Every joint points to bar 91 and flexibly connects, and first segment points to bar 91 and is connected on the wheel carrier 2, and all the other sensing bars 91 can be contracted in next adjacent joint and point in the bar 91; First segment points to bar 91 and is rotationally connected; Wheel carrier 2 is provided with the sensing bar fixed sturcture 92 of S type, when service orientation indicator device not, can its end be inserted in the S type fixed sturcture 92.Indicator device can also be laser sight, retouches standard to be suitable for more high-precision direction.In laser sight, use a Laser emission diode.
This measuring wheel 1 can be used for survey area and measure air line distance.When measuring air line distance, measuring wheel 1 along straight-line rolling, is detected the rotation number of turns of measuring wheel 1 through sensor 5, the girth according to the number of turns and measuring wheel 1 gets final product the calculated line distance then.When survey area; Starting point is made as the initial point of plane coordinate system; Measuring wheel 1 begins to roll from starting point, when measuring wheel 1 turns to, draws the steering angle of measuring wheel 1 through geomagnetic sensor 10, and writes down the coordinate figure of this turning point; Write down the coordinate and the steering angle of each turning point successively according to the method respectively and be stored in the storer 7, when measuring wheel 1 is got back to starting point, can confirm the area that measuring wheel 1 rolls around ground and surrounded in a week.In plane coordinate system, constitute straight line between adjacent 2; Each coordinate points through in steering angle and the plane coordinate system can calculate leg-of-mutton area; And these triangle area additions can be calculated the area of being asked, through central processing unit 6 area value is shown on the operation display interface 4 after calculating area.According to above-mentioned operating process, each flex point can both draw on the coordinate system that display screen is set up exactly, has also just possessed the condition of real-time calculating block area.
Computing formula is:
S＝1/2*(∑[(Xn+1-Xn)*(Yn+1+Yn)]-Xn+1*Yn+1)
(Xn is with the coordinate figure behind each flex point coordinatograph Yn).
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used measuring wheel 1, wheel carrier 2, handle 3, operation display interface 4, sensor 5, central processing unit 6, storer 7, permanent magnet 8, indicator device 9, pointed to terms such as bar 91, S type fixed sturcture 92 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (8)
1. a range finding and survey the measuring wheel of area; Comprise measuring wheel (1), be arranged on the wheel carrier (2) on the measuring wheel (1) and be connected the handle (3) on the wheel carrier (2); On handle (3), be provided with operation display interface (4); It is characterized in that; On wheel carrier (2), be provided with and detect the sensor (5) that measuring wheel (1) rotates the number of turns, in handle (3), also be provided with central processing unit (6), above-mentioned sensor (5) all is connected with central processing unit (6) with operation display interface (4); In handle (3), also be provided with the storer (7) and the geomagnetic sensor (10) that are connected with central processing unit (6); Described central processing unit (6) is used for receiving sensor (5) lap signal that transports and the angle signal that reception geomagnetic sensor (10) transports, and calculates the area that measuring wheel (1) rolls around ground and surrounded in a week, and carries the result to show to operation display interface (4) according to the girth of measuring wheel (1), the rotation number of turns and measuring wheel (1) steering angle of measuring wheel (1) simultaneously.
2. the measuring wheel of range finding according to claim 1 and survey area is characterized in that described geomagnetic sensor (10) is three betwixt mountains Magnetic Sensors (10), and wherein the X-direction of geomagnetic sensor (10) is consistent with the direction that measuring wheel (1) rolls.
3. the measuring wheel of range finding according to claim 1 and 2 and survey area is characterized in that, also is connected with acceleration transducer (11) on the described central processing unit (6), and described acceleration transducer (11) is used for correcting measuring wheel (1) angular error when turning to.
4. the measuring wheel of range finding according to claim 3 and survey area; It is characterized in that; Described acceleration transducer (11) is three accelerator sensors (5), and wherein the X-direction of acceleration transducer (11) is parallel or vertical with the X-direction of geomagnetic sensor (10).
5. the measuring wheel of range finding according to claim 4 and survey area; It is characterized in that; Described sensor (5) is two Hall elements that are arranged side by side; Upward be evenly equipped with some permanent magnets (8) by circumferencial direction at measuring wheel (1), and described each permanent magnet (8) all can be relative with two above-mentioned Hall elements, two Hall elements are in different on off states.
6. the measuring wheel of range finding according to claim 5 and survey area is characterized in that described vehicle frame is provided with the indicator device (9) that is used in reference to measuring wheel (1) direct of travel.
7. the measuring wheel of range finding according to claim 6 and survey area; It is characterized in that; Described indicator device (9) comprises that some joints are in turn connected into straight line and horizontally disposed sensing bar (91); Every joint points to bar (91) and flexibly connects, and first segment points to bar (91) and is connected on the wheel carrier (2), and all the other sensing bars (91) can be contracted in next adjacent joint and point in the bar (91).
8. the measuring wheel of range finding according to claim 6 and survey area is characterized in that described indicator device (9) is a laser sight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203695273U CN202304739U (en) | 2011-09-29 | 2011-09-29 | Measuring wheel used for measuring range and area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203695273U CN202304739U (en) | 2011-09-29 | 2011-09-29 | Measuring wheel used for measuring range and area |
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| Publication Number | Publication Date |
|---|---|
| CN202304739U true CN202304739U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203695273U Expired - Fee Related CN202304739U (en) | 2011-09-29 | 2011-09-29 | Measuring wheel used for measuring range and area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651195A (en) * | 2015-12-29 | 2016-06-08 | 北京华航无线电测量研究所 | Miniaturized portable distance measuring and calibration device |
| CN106779952A (en) * | 2016-12-23 | 2017-05-31 | 王金 | A kind of band mobile phone A PP intelligence house viewing systems and a kind of mobile phone A PP see room house measurement method |
| CN108549091A (en) * | 2018-03-28 | 2018-09-18 | 湖南华宏铁路高新科技开发有限公司 | A kind of GPS adds the system and method for wheel footpath derivation one bar, one file data |
| CN112461185A (en) * | 2020-12-03 | 2021-03-09 | 深圳市测友科技有限公司 | Measuring device and measuring method for irregular object |
-
2011
- 2011-09-29 CN CN2011203695273U patent/CN202304739U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651195A (en) * | 2015-12-29 | 2016-06-08 | 北京华航无线电测量研究所 | Miniaturized portable distance measuring and calibration device |
| CN105651195B (en) * | 2015-12-29 | 2018-08-31 | 北京华航无线电测量研究所 | A kind of Miniaturized portable ranging robot scaling equipment |
| CN106779952A (en) * | 2016-12-23 | 2017-05-31 | 王金 | A kind of band mobile phone A PP intelligence house viewing systems and a kind of mobile phone A PP see room house measurement method |
| CN108549091A (en) * | 2018-03-28 | 2018-09-18 | 湖南华宏铁路高新科技开发有限公司 | A kind of GPS adds the system and method for wheel footpath derivation one bar, one file data |
| CN112461185A (en) * | 2020-12-03 | 2021-03-09 | 深圳市测友科技有限公司 | Measuring device and measuring method for irregular object |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20140929 |
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| EXPY | Termination of patent right or utility model |