CN212846381U

CN212846381U - Sundial

Info

Publication number: CN212846381U
Application number: CN202020843688.0U
Authority: CN
Inventors: 田言涛
Original assignee: Olidus Technology Heze Co ltd
Current assignee: Olidus Technology Heze Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-03-30
Anticipated expiration: 2030-05-21

Abstract

A sundial comprises a segment of an andits scale and a group of dials, wherein the group of dials are formed by nesting of time ellipses with a plurality of latitudes, the andits scale is positioned in the middle of the dials, and the time ellipses and the andits scale form a game type horizon sundial. Because the utility model discloses a multi-latitude hour oval nested structure to can be general at nationwide, the user in different areas only need refer to the hour circle in place can estimate the exact solar time.

Description

Sundial

Technical Field

The utility model relates to a sundial field especially relates to a game table formula horizon sundial.

Background

The measurement of time and space by using the natural law of the change of the sun shadow is a long-history world-learning method invented by human beings, and the Chinese yerba mate is a representative of the astronomical instrument for measuring the change law of the sun shadow. According to the civilization term written by Mr. Von of Ming-Shi school of society and academy of sciences of China: introduced in the ancient astronomy, thought and system, the ancestors of Chinese nationalities have been scientifically and technically active, such as solar term measurement and azimuth measurement, by using the guy-gay, eight thousand years ago at least. The technology of measuring the sunset generally passes through three stages of human body shadow measurement, upright rod shadow measurement and building platform shadow measurement, the surface height is gradually increased, the measurement precision is higher and higher, and people know the time change and the space direction more and more accurately, so that the scientific basis is further laid for the production of the ancient agricultural society. As productivity develops, people have a finer division of time, and besides the calendar of the year, month and day, it is necessary to subdivide the day into different time blocks, which is the origin of the time of day, and the earliest tool for measuring the time of day is the guy list. This type of guy for measuring time was later called a terrestrial sundial. Because the staff of the guy square is vertical to the horizontal plane of the place, the change speed of the shadow of the sun in one day is not uniform, and because of the existence of the yellow-red angle of the earth, the length of the shadow of the sun also changes in one year, which limits the accuracy of time on the scale of measuring the time of day. The ancient people have long found that the sun rotates around the north polar, as well as other celestial bodies, so that in order to improve the time measurement accuracy, the ancient people point the watch rod of the gnomon to the position of the north polar, the watch rod is parallel to the rotation axis of the earth, the dial plane of the gnomon is parallel to the equatorial plane of the earth, and the inclined image measuring instrument is called an equatorial sundial. The change speed of the sun shadow on the equatorial sundial is uniform, and the reading is convenient, so that the common sundial is generally the equatorial sundial at present.

The scientific research on the natural law of human beings has never been stopped, and the time measuring principle of the terrestrial sundial is also known and mastered by people along with the progress of astronomy and mathematics. Approximately 500 years ago, a teacher in france mathematically derived a scientific method for measuring the hour using the xie-biao principle, and in 2006, an zheng-fan teacher in the teaching and research room of the education office in zhongshan city of guangdong province redacted to "study on the principle of projecting the sun clock (human sundial) on the human body and the calculation method of the sundial carving in the book of the research and discussion of the astronomical education seminar" in yue hong kong and australian. Zhengyifan indicates that the dial plate for identifying the time of day has an elliptical shape, but a dial rod generating a shadow cannot be fixed and needs to move along the meridian direction within a certain range, so that the dial plate is a swimming type horizontal sundial. The tourist watch stands on the meridian line according to the date, the intersection point of the watch shadow and the hour ellipse is the current time, and the time is only related to the direction of the watch shadow and is not related to the length of the watch shadow, namely the height of the watch rod. If the meridian line moved by the tourist watch is called as the guy square, the length is L, the latitude of the guy square is W, the length of the long half shaft of the ellipse circle of the hour is a = L ÷ cosW, the length of the short half shaft is b = L × tgW, the declination of the sun at the time of image measurement is C, the solar hour angle is S, the center of the guy square is used as the origin, the east direction is used as the positive abscissa direction, and the north direction is used as the positive ordinate direction, a plane rectangular coordinate system is established, then the watch rod should be erected at a coordinate point (0, L × tgC) on the image measurement day, and the intersection point coordinate of the watch image and the hour circle is (a × sinS, b × cosS). The principle is the time measurement principle of the game table type sundial.

Today, the time service practicability of sundials is greatly reduced, but natural scientific knowledge such as astronomy and geography contained in sundials is still important content of modern scientific education, and human social knowledge such as historical culture contained in guy watches and even sundials has important edification significance for people to know the past thinking future. Particularly, the measurement day shadow scientific technology represented by astronomical instruments such as the Chinese guy table directly forms the original concept, forms the Chinese concept, forms the middle-quality way, forms the middle-quality and neutral philosophy, forms the cultural traditions such as the twenty-four solar terms and the like, deeply influences the thinking mode and the behavior habit of Chinese nationalities in the fields of time, space, politics and philosophy, and is an important carrier and an important platform of cultural inheritance for Chinese national cultural acceptance. The swimming type horizontal sundial needs to move the staff on different dates, if the body of a person is taken as the staff, the natural movement requirement just brings interactive pleasure, and the swimming type horizontal sundial also returns to the early age of body shadow measuring in the legend of 'Quepfather pursuit' in form. Therefore, the game surface type horizontal sundial is considered to be a very good popular science carrier, has an inexplicable form of integration of the heaven and the human, has rich scientific culture connotation, and plays an active role in enhancing the scientific quality of the whole people and enhancing the confidence of the whole people culture today when emphasizing the science and technology prosperity. Only, the relevant geometric data of the game table type horizon and sundial is relevant to the longitude and latitude of the place, and the actual size of the time circle ellipse can be correctly used only by calculating according to the local coordinates, so that the application range is limited, and the manufacturing cost is increased to a certain extent. The requirement on the time measurement precision is high, and the application range of the watch type horizontal and solar dial with the same specification is small; the requirement on the time measurement precision is not high, and the application range of the game table type sundial with the same specification is a little larger. Therefore, while ensuring a certain time measurement accuracy, the design of a universal swimming table type horizontal and sundial form nationwide becomes a current need.

Disclosure of Invention

In order to solve the problem, the utility model provides a sundial, its aim at provides a general table formula sundial of trip within the national range.

In order to realize the purpose, the utility model provides a sundial is realized like this: a sundial comprises a segment of scale and a group of dials, wherein the group of dials are formed by nesting time ellipses at a plurality of latitudes, and the scale is positioned in the middle of the dials.

As an improvement, the hour points on the hour ellipses are connected with the same hour points on the adjacent hour ellipses to form hour lines, the hour lines and the hour ellipses form a group of hour nets, and the hour lines are provided with integral point marks of time.

As an improvement, the area of the hour circle in the middle of the adjacent hour ellipses is provided with the area label with the application range.

As an improvement, the area surrounded by the center of the time-of-day net is divided into a day area and a night area.

As an improvement, the guy square is provided with twenty-four solar terms marks, the twenty-four solar terms are sequentially arranged by taking the middle point of the guy square as the center of a circle and are connected with the guy square by a line segment perpendicular to the guy square.

As an improvement, the twenty-four solar terms label is provided with a corresponding Gregorian calendar date label.

As an improvement, the time net is provided with a direction mark for assisting the sundial to be placed.

As an improvement, the hour circle, the day area, the night area, the twenty-four solar terms label and the like can be set with different colors for distinguishing prominently.

As an improvement, the sundial is provided with a compass and other azimuth indicating devices for auxiliary placement.

Because the utility model discloses an oval nested structure in many latitudes hour to can obtain following beneficial effect: the universal game table type sundial for the nationwide area can be obtained, and users in different areas can estimate the correct solar time by only referring to the time circle of the area.

Drawings

The invention is described in further detail below with reference to the drawings and specific examples.

Fig. 1 is the utility model discloses a top view, 101 is the ellipse of the hour in the picture, 102 is the hour line, 103 is the punctuation mark, 104 is the supplementary mark of time, 105 is the position mark, 106 is the daytime zone, 107 is the night district, 108 is the mark of twenty-four solar terms, 109 is the circle of twenty-four solar terms, 110 is the calendar date mark of solar terms, 111 is the square, 112 is the hour circle, 113 is the region mark, 114 is the compass.

Detailed Description

As shown in fig. 1, a sundial comprises a segment of an andiy scale 111 and a group of dials, wherein the group of dials are formed by nesting time ellipses 101 at a plurality of latitudes, and the andiy scale 111 is positioned in the middle of the dials; the hour points on the hour ellipse 101 and the same hour points on the adjacent hour ellipse 101 are connected to form an hour line 102, the hour line 102 and the hour ellipse 101 form a group of hour nets, and the hour line 102 is provided with a time integral point mark 103; setting auxiliary time labels 104 such as morning, evening and the like at corresponding positions of the whole point label 103; arranging a direction label 105 on the hour net; dividing the whole country into seven areas according to latitudes, corresponding to seven hour circles 112, and setting region labels 113 of the corresponding areas; the inner surrounding area of the hour network is divided into a day area 106 and a night area 107; the guy scale 111 is provided with twenty-four solar terms labels 108, all the solar terms are sequentially arranged along a circle 109 taking the center of the guy scale 111 as the center of a circle, the solar terms are connected with the guy scale 111 by a line segment vertical to the guy scale 111, and a connecting line is provided with a calendar date label 110 corresponding to the solar terms; a compass 114 is provided at one corner of the sundial to indicate the correct bearing.

The using method of the game type sundial comprises the following steps:

firstly, horizontally placing a sundial according to a correct direction;

secondly, referring to the solar term label, erecting a meter pole or an observer on a corresponding date point on the square;

thirdly, observing the direction of the shadow of the sun, and finding out the intersection point position of the shadow and the hour circle of the area where the shadow is located;

fourthly, marking and estimating the current solar time by referring to the hour of the hour circle;

and fifthly, converting the solar time into the national standard time by combining the time difference between the location and Beijing.

Claims

1. A sundial which is characterized by comprising a segment of an gnomon (111) and a group of dials; the dial plate is formed by nesting time ellipses (101) at a plurality of latitudes; the yerba mate ruler (111) is positioned in the middle of the dial.

2. The sundial according to claim 1, wherein the hour point on the hour ellipse (101) is connected to the same hour point on the adjacent hour ellipse to form an hour line (102), the hour line (102) and the hour ellipse (101) form a time grid, and the hour line (102) is provided with a time whole point label (103).

3. The sundial according to claim 1, wherein the area of the hour circle (112) in the middle of the adjacent hour ellipses (101) is provided with a region label (113) with an application range.

4. The sundial according to claim 1, wherein the dial is provided with an orientation label (105) for assisting in placing the sundial.

5. The sundial according to claim 1, wherein the central area surrounded by the dial is divided into a daytime zone (106) and a nighttime zone (107).

6. The sundial according to claim 1, wherein the yerba mate (111) is provided with twenty-four solar terms (108), and the twenty-four solar terms (108) are sequentially arranged along a circle (109) with the center of the yerba mate (111) as the center of the circle, and are connected with the yerba mate (111) by a line segment perpendicular to the yerba mate (111); and the twenty-four solar terms label (108) is provided with a corresponding Gregorian calendar date label (110).

7. The sundial according to claim 1, wherein the sundial is provided with an auxiliary compass (114) for placement and other orientation indicating devices.

8. The sundial according to claim 1, wherein the area of the hour circle (112) in the middle of the hour ellipse (101) and the twenty-four solar terms labels (108) of the xie chi (111) are provided with different colors for striking and distinguishing.