CN206959852U - Sun diurnal motion and longitude and latitude measuring instrument - Google Patents
Sun diurnal motion and longitude and latitude measuring instrument Download PDFInfo
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- CN206959852U CN206959852U CN201720848938.8U CN201720848938U CN206959852U CN 206959852 U CN206959852 U CN 206959852U CN 201720848938 U CN201720848938 U CN 201720848938U CN 206959852 U CN206959852 U CN 206959852U
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Abstract
The utility model is sun diurnal motion and longitude and latitude measuring instrument, including the base that surface is smooth, fixing hole, observe bar, first line of rabbet joint, second line of rabbet joint and compass, first line of rabbet joint represents north-south orientation, second line of rabbet joint represents thing orientation, separation is set to fixed hole position, during use, adjust position base calibration orientation, compass needle is set to be overlapped with first line of rabbet joint of compass outside line, and compass needle and first line of rabbet joint are in same horizontal line, the angle between needle and first line of rabbet joint is set to be magnetic declination according to when geomagnetic declination adjustment base direction, in the case, the bar shadow of observation bar is local high noon when being overlapped with first line of rabbet joint, when can draw the place at high noon according to the equal time difference, then the latitude that location is calculated with the difference of Beijing time is utilized.
Description
Technical field
It the utility model is related to teaching aid technical field, more particularly to sun diurnal motion and longitude and latitude measuring instrument.
Background technology
The diurnal motion of the sun has significant difference compared with the diurnal motion of other fixed stars, i.e., because the earth is except rotation
In addition also there is being revolved round the sun around day, the sun is caused to make annual motion along celestial sphere ecliptic with speed certain daily, inherently shadow
The change to sun position within ecliptic last year is rung, sun position different on ecliptic at Various Seasonal is carried out Sunday
Motion, simultaneously as the earth's axis is with respect to its orbital plane run-off the straight in revolution for the earth, there is Huang relative to the equatorial plane for ecliptic plane
The red angle of cut, then, when the ground level in a certain latitude place is to observe sun diurnal motion, just produce because when and the different sun
The seasonal variations of diurnal motion, the sun haunt horizontal orientation and this seasonal variations also correspondingly occur.
Longitude and latitude is a coordinate system for being collectively referred to as composition for longitude and latitude, be a kind of sphere using three-dimensional space come
The spherical coordinate system in tellurian space is defined, any one tellurian position can be indicated.Simple measurement warp now
For latitude usually using the mode got instant result, latitude is exactly earth surface in the complementary angle of the angle of sunlight, using a pole, just
Latitude can be simply obtained, but due to there is the influence of north and south tropic equal error and solar term, the resultant error so measured is very
Greatly.Astronomically, there are two for the sun of measuring period, one is the hypothesis sun, i.e., mean sun, mean sun operation is even
Speed, daily 24 hours are cried the mean solar time, referred to as usually；One is true sun, and true sun is not average rate, true sun Sunday
The period of motion is apparent solar time, abbreviation apparent time.Apparent time-usually=time difference.In traditional experiment observation, using the mean solar time as standard,
When high noon on the same day is regarded as 12, and regard that the sun is in upper transit position as, longitude and latitude is calculated by this moment standard.It is and actual
On, daily, the sun is in the upper transit moment（I.e. shadow is most carved in short-term）It is continually changing, there was only 4 days in 1 year, and be not
Two points of solstices.In addition, in Germicidal efficacy, also a key factor is that magnetic declination must take into consideration, and general Germicidal efficacy is all
Ignore, or be difficult to correct.Therefore the longitude and latitude calculated using the experiment to get instant result of routine is unfounded, even wrong,
During Students ' Learning demonstration is groped, learning and mastering problem of the student to this part can be had a strong impact on, it is therefore desirable to a kind of to add
The experiment teaching aid of strong precision can strengthen the understanding of student.
The content of the invention
The purpose of this utility model is to be directed to above technical problem, there is provided a kind of sun diurnal motion and longitude and latitude measurement
Instrument.
Sun diurnal motion and longitude and latitude measuring instrument, including the base that surface is smooth, offer at the base center solid
Determine hole, observation bar is removably provided with the fixing hole, the base upper surface is set with the Kong Xinwei intersection points of fixing hole
Two orthogonal first line of rabbet joint and second line of rabbet joint, slotted eye is opened up on first line of rabbet joint, compass is embedded with the slotted eye
Instrument, the center of circle of the slotted eye is on first line of rabbet joint.
In one of the embodiments, the fixing hole and the slotted eye are each perpendicular to the upper surface of the base.
In one of the embodiments, the base is circular or rectangle.
In one of the embodiments, it is provided with telescopic loop bar in the observation bar.
In one of the embodiments, the observation bar bottom is arranged rubber sleeve, the overall diameter of the rubber sleeve and institute
The aperture for stating fixing hole is identical.
In summary, sun diurnal motion and longitude and latitude measuring instrument, including the base that surface is smooth, at the base center
Fixing hole is offered, observation bar is removably provided with the fixing hole, the base upper surface is with the Kong Xinwei of fixing hole
Intersection point sets two orthogonal first line of rabbet joint and second line of rabbet joint, opens up slotted eye on first line of rabbet joint, the slotted eye embeds
Provided with compass, on first line of rabbet joint, first line of rabbet joint represents north-south orientation in the center of circle of the slotted eye, and second line of rabbet joint represents east
West position, separation is set to fixed hole position, during use, adjustment position base calibration orientation, makes compass needle and sieve
First line of rabbet joint of disk outside line is overlapped, and compass needle and first line of rabbet joint are in same horizontal line, are adjusted according to when geomagnetic declination
Whole base direction makes the angle between needle and first line of rabbet joint be magnetic declination, in the case, observes the bar shadow and first line of rabbet joint of bar
It is local high noon during coincidence, when can draw the place at high noon according to the equal time difference, then utilizes the difference with Beijing time
Calculate the latitude in location.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment,
Fig. 2 is the curve map of time difference map.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model.
As shown in figure 1, sun diurnal motion and longitude and latitude measuring instrument, including the base 1 that surface is smooth, in the base 1
Fixing hole is offered at the heart, observation bar 2 is removably provided with the fixing hole, the upper surface of base 1 is with fixing hole
Kong Xinwei intersection points set two orthogonal line of rabbet joint 4 of first line of rabbet joint 3 and second, and slotted eye is opened up on first line of rabbet joint 3, described
Compass 5 is embedded with slotted eye, the center of circle of the slotted eye is on first line of rabbet joint 3.First line of rabbet joint 3 represents north-south orientation, the
Two line of rabbet joint 4 represent thing orientation, and separation is set to fixed hole position, during use, adjust the position correction orientation of base 1, make
The needle of compass 5 overlaps with first line of rabbet joint 3 of compass outside line, and the needle of compass 5 and first line of rabbet joint 3 are in same horizontal line
On, make the angle between needle and first line of rabbet joint 3 be magnetic declination according to when geomagnetic declination adjusts the direction of base 1, in the case, see
It is local high noon when the bar shadow of measuring staff 2 overlaps with first line of rabbet joint 3, when can draw the place at high noon according to the equal time difference, after
And utilize the latitude that location is calculated with the difference of Beijing time.
In one of the embodiments, the fixing hole and the slotted eye are each perpendicular to the upper surface of the base 1.It is fixed
Hole is used for fixation measuring bar, and measurement bar is only in the case of the upper surface of base 1, its shadow length stayed on base 1
Its degree of accuracy of calculating longitude and latitude is just high.Slotted eye is used to place compass 5, and slotted eye only has the placement of the upper surface of vertical feet 1, compass
5 pointer is just beneficial to and first line of rabbet joint 3 is in same level, beneficial to the calculating of later stage longitude and latitude.
In one of the embodiments, the base 1 is circular or rectangle.Need to set on base 1 in measurement process
Put the orthogonal line of rabbet joint 4 of first line of rabbet joint 3 and second, represent all directions four direction respectively, base 1 be provided in round or
On the one hand the regular shape of rectangle is beneficial to the measuring setting of first line of rabbet joint 3 and second line of rabbet joint 4, another aspect measurement bar is when taking a photograph
It is convenient to leave clearly shadow on the base 1 of regular shape, it is convenient for measuring shadow length and local longitude and latitude is calculated.
In one of the embodiments, it is provided with telescopic loop bar in the observation bar 2.In measurement process, it can stretch
The loop bar of contracting can increase the measurement length of observation bar 2, and the measurement to shadow length can be beneficial in experimentation.
In one of the embodiments, observation bar 2 bottom is arranged rubber sleeve 6, the overall diameter of the rubber sleeve 6 with
The aperture of the fixing hole is identical.Rubber sleeve 6 can increase the stiction between fixing hole, so as to strengthen observation bar 2
Stability between fixing hole, beneficial to the detection reliability in increase experimentation.
Embodiment 1
Winter solstice in 2015, longitude and latitude is measured at MeiZhou,GuangDong city address of the applicant.It is 100 ㎝ to observe the height of bar 2, is taken
About 1 ° 30 ' of magnetic declination（West）, when shadow overlaps with the pointer of compass 5,14 divide when Beijing time is 12, now measure shadow length
110㎝。
Understood according to Fig. 2 time difference maps, December 22, the equal time difference be+1 point 22 seconds, i.e., true sun upper transit moment=12 when -1
58 divide 38 seconds when dividing 22 seconds=11, with Beijing time（120 ° of E）Differ 15 points 22 seconds, calculate that longitude is about 116 ° of east longitude herein
19 ' 30 ", show that longitude is 116 ° 7 ' 49 " E is close with mobile phone.Measure shadow and be about 110 ㎝, TgH=100/110=0.909, look into H=
42 °, according to solar noon sun height calculation formula H=90 °-| φ-δ |, it is about 24 ° 34 ' of north latitude to extrapolate local geographic latitude φ,
Numerical value north latitude is shown also close to mobile phone 24 ° 16 ' 52 ".
A specific embodiment of the present utility model is the foregoing is only, but architectural feature of the present utility model is not limited to
This, for any those skilled in the art in field of the present utility model, the change or modification made are encompassed by this practicality newly
In the scope of the claims of type.
Claims (5)
1. sun diurnal motion and longitude and latitude measuring instrument, it is characterised in that：Including the base that surface is smooth, at the base center
Fixing hole is offered, observation bar is removably provided with the fixing hole, the base upper surface is with the Kong Xinwei of fixing hole
Intersection point sets two orthogonal first line of rabbet joint and second line of rabbet joint, opens up slotted eye on first line of rabbet joint, the slotted eye embeds
Provided with compass, the center of circle of the slotted eye is on first line of rabbet joint.
2. sun diurnal motion and longitude and latitude measuring instrument according to claim 1, it is characterised in that：The fixing hole and described
Slotted eye is each perpendicular to the upper surface of the base.
3. sun diurnal motion and longitude and latitude measuring instrument according to claim 1, it is characterised in that：The base to be circular or
Person's rectangle.
4. sun diurnal motion and longitude and latitude measuring instrument according to claim 1, it is characterised in that：Set in the observation bar
There is telescopic loop bar.
5. sun diurnal motion and longitude and latitude measuring instrument according to claim 1, it is characterised in that：Observation bar bottom set
Provided with rubber sleeve, the overall diameter of the rubber sleeve is identical with the aperture of the fixing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848938.8U CN206959852U (en) | 2017-07-13 | 2017-07-13 | Sun diurnal motion and longitude and latitude measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720848938.8U CN206959852U (en) | 2017-07-13 | 2017-07-13 | Sun diurnal motion and longitude and latitude measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206959852U true CN206959852U (en) | 2018-02-02 |
Family
ID=61384465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720848938.8U Expired - Fee Related CN206959852U (en) | 2017-07-13 | 2017-07-13 | Sun diurnal motion and longitude and latitude measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206959852U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795673A (en) * | 2020-07-09 | 2020-10-20 | 杭州海康微影传感科技有限公司 | Azimuth angle display method and device |
-
2017
- 2017-07-13 CN CN201720848938.8U patent/CN206959852U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795673A (en) * | 2020-07-09 | 2020-10-20 | 杭州海康微影传感科技有限公司 | Azimuth angle display method and device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180202 Termination date: 20190713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |