CN201140629Y

CN201140629Y - Locate in-place intersection ruler of aopography

Info

Publication number: CN201140629Y
Application number: CNU2007201851209U
Authority: CN
Inventors: 甘省文; 金忠民; 杨春明; 赵晓磊; 王柏松
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-25
Filing date: 2007-12-25
Publication date: 2008-10-29
Anticipated expiration: 2017-12-25

Abstract

The utility model relates to an in-situ fixed-point intersection ruler for geomorphy, which is an auxiliary means for assuring point position in picture practice for geomorphy. The in-situ fixed-point intersection ruler for geomorphy comprises a main scale and an auxiliary scale, and the main scale and the auxiliary scale are connected through a shaft. The main scale and the auxiliary scale can rotate at random around the shaft center, a fine filling line between the main scale and the auxiliary scale divides for the relative distance of maps with different dimension scales, and the fine filling line on a round disc at the bottom of the main scale divides for angles (mil). When in use, the main scale and or the auxiliary scale are rotated to pass through a known point on a picture according to the mill division and the distance division at the bottom of the main scale, and the purpose of assuring point position on a map is achieved. The improvement and the innovative point of the utility model are that the in-situ fixed-point intersection ruler for geomorphy solves the problem that the existing method for assuring a standing point and a target point is single, and the steps are complex, which overcomes the shortcomings of slow speed and big error in a traditional method, and the traditional method is easily influenced by environments. The utility model has the advantages of simple design, reasonable structure, simple operation, accurate measuring and reading and the like.

Description

Geomorphology terrain fixed point intersection chi

Technical field:

Geomorphology terrain fixed point intersection chi is that geomorphology is with being used for determining an a kind of appurtenance of position in the figure training.

Background technology:

Terrain is determined the some position problem that to be people often run into during with figure at terrain, and the speed of its judgement is finished with the accuracy affects task of measuring.

Terrain is determined the method and the shortcoming of some position in the prior art:

Determine that the some position comprises definite standpoint and definite impact point.

Terrain determines that standpoint refers in terrain usefulness figure, and the position on the spot that oneself is stood is found on topographic map accurately.Determined with intersection that the step of standpoint was in the past: the one, map orientation; The 2nd, select from standpoint far away, on the figure and terrain all have two to three form point significantly.The 3rd, the terrain intersection is cut in compass ruler (or three-square rule) limit respectively the anchor point (can insert fine needle) of two topographic(al) point symbols on the figure; Aim at the corresponding topographic(al) point of terrain successively, draw the direction line backward along the ruler limit respectively then; Scheming the intersection point of last two direction lines, is exactly the position of standpoint on figure.

Terrain is determined that impact point refers to the some position in a distant place is marked and drawed on the relevant position of map.Step with the light collimation method was in the past: first accurately map orientation, with ruler by the standpoint on the figure to impact point aiming line, judge distance again, synthetic determination.

Above its shortcoming of method: the one, need apparatus many; The 2nd, job step is many.Consequent error is also many, and operating speed is also slow.

Summary of the invention:

The purpose of this utility model is at above-mentioned the deficiencies in the prior art, the geomorphology terrain fixed point intersection chi that develops according to mathematical principle, this chi can satisfy the problem of fast (speed is fast), few (apparatus is few), accurate (fixed point is accurate), has improved the precision and the speed of fixed point.For achieving the above object, the utility model has adopted following technical proposals: geomorphology terrain fixed point intersection chi, comprise main scale (1) and auxilliary chi (2), and main scale (1) is connected with the center of circle of disk by axle (3) with auxilliary chi (2) and is fixing.Main scale (1) and auxilliary chi (2) can rotate arbitrarily by axle (3).Rotate main scale (1) and auxilliary chi (2) during use,, determine the purpose of some position to realize terrain by mil number on the disk and the range scale on the main scale.

Its concrete grammar is:

When terrain was determined standpoint, the first step found two known points that all have with terrain on the figure; In second step, measure wherein the angle between two known points and the distance of one of them known point; The 3rd step, according to the distance of measuring that the anchor point of the fine line in the main scale (1) and this known point map symbol is tangent, according to the angle of measuring auxilliary chi (1) is opened again, make the anchor point at fine line and another known point map symbol center tangent, the axle center of ruler (3) promptly are standpoint.

When determining impact point, the first step: position on the figure of ruler axle center (3) and standpoint is tangent; Second step: making on the figure of main scale (1) and known point the position tangent, auxilliary chi (2) is opened and the definite object point according to the impact point of measuring to the angle of known point, is the position of decidable impact point according to distance.

Progress of the present utility model and innovative point have been to solve terrain and have determined that the direct amount of some position reads problem, have overcome step complexity in the conventional method, speed is slow, error is big, shortcoming such as easy affected by environment.Have simplicity of design, rational in infrastructure, amount and characteristics such as read accurately.Step is few and method is simple when determining the some position with this product, has improved the speed and the precision of fixed point.This chi has also designed 1: 50000 topographic map coordinate amount and has read chi simultaneously, and higher value for applications is arranged.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment:

When terrain was determined standpoint, the first step found two known points that all have with terrain on the figure; In second step, measure wherein the angle between two known points and the distance of one of them known point; The 3rd step, according to the distance of measuring that the anchor point of the fine line in the main scale 1 and this known point map symbol is tangent, according to the angle of measuring auxilliary chi 2 is opened again, make the anchor point at fine line and another known point map symbol center tangent, the axle center 3 of ruler promptly is a standpoint.

When determining impact point, the first step: position on the figure of ruler axle center 3 and standpoint is tangent; Second step: making on the figure of main scale 1 and known point the position tangent, according to the impact point of measuring to the angle of known point auxilliary chi 2 is opened and the definite object point, is the position of decidable impact point according to distance.

Claims

1, geomorphology terrain fixed point intersection chi is characterized in that: comprise that main scale (1) is connected by axle (3) with auxilliary chi (2), main scale (1) and auxilliary chi (2) can rotate arbitrarily by axle (3).

2, geomorphology terrain fixed point intersection chi according to claim 1, it is characterized in that: also be shaped on the range scale of corresponding proportion chi topographic map on main scale (1) and the auxilliary chi (2), be shaped on the mil graduation on the lower disk, also be shaped on 1: 50000 topographic map coordinate amount on the main scale and read graduation.