CN2068226U - Height indicator reading disc with optional measuring points - Google Patents

Abstract

The utility model provides a new reading disc of a height indicator, which is suitable for the height indicator of a hanging hammer type, a Brillouin type, a domestic SC-I type, a SC-II type, a SCG-I type and the like which measure the height by utilizing the triangle principle. The reading disc is characterized in that a horizontal distance line group with continuously changed mark horizontal distance in a certain interval and a contour line group with changed mark height are engraved on the reading disc, and after the reading disc is installed on a height measurer, the position of a measuring point can be optionally measured in a preset horizontal distance interval during height measurement, so that the work efficiency of height measurement under complex environmental conditions can be improved, for example: when the Brooku vegetable type height measurer provided with the reading disc is used for measuring the height of a tree in a forest, the work efficiency can be improved by more than 2-3 times.

Description

Height indicator reading tray

The utility model relates to a kind of reading dial that utilizes the triangle principle to survey and use on the high height finder.

Utilize the height finder of triangle principle design, as suspended type, Bo Lulaishi, homemade SC-I type, SC-II type, SCG-I type height finder etc., it surveys high scale all is to read by the scale on the pin indication reading dial that hangs down.Scale on this class height finder reading dial is to adopt the mathematical formulae of h=Ltg θ (h refers to the height of testee, and L refers to the horizontal range of measuring point to testee, and θ refers to survey the inclination angle of height finder when high) to design.That is: when L one timing, h changes with θ, engraves corresponding h on the position of pin sensing θ of hanging down on the reading dial, just can directly read the height value of testee.The simplicity of design of this reading dial, convenient reading, still, its requires to implement to survey when high, and measuring point is necessary for certain value to the horizontal range L between the testee, otherwise, can't directly read the height of testee from the reading dial.

In order to address this problem, reduce the restriction that L selects measuring point, improve the efficient of measuring point selection work when survey is high under the complex conditions, common way is the group number that increases L and h respective value, as used reading dial on the homemade SCG-I type height finder, just designed the datum-plane distance that L=10 rice, L=15 rice, L=20 rice and L=30 rice are used to survey high scale for four groups simultaneously, still, the L value of allowing of this method for designing is limited after all.In fact, in the comparatively complicated high environment of survey, during as the mensuration height of tree in forest, the influence that blocked mutually by tree crown, the position that can see tested wood height clearly may be 13 meters, 15. 5 meters, 16.2 meters or the like to the distance of tested wood, and not necessarily just in time be 10 meters, 15 meters, 20 meters and 30 meters, on the contrary, on these datum-plane that must abide by distances, might not see the height of tree clearly, therefore, in the high such work of existing height finder reading dial assize in resembling forest is inapplicable basically, inefficient in other words conj.or perhaps.

The purpose of this utility model will provide a kind of improved height finder reading dial exactly, after height finder is installed this reading dial, survey when high can be in a continuous horizontal range scope optional point position, thereby adapt to better and satisfy the needs of surveying high workload in the open-air complex environment.

The utility model is to realize by the method for designing that changes reading groove on the reading dial.At first, with being the camber line in the center of circle with the pin point of rotation O that hangs down on the reading dial, form sign horizontal range continually varying horizontal range line group in certain interval, link up the formation level line with surveying the equal point of high scale on each horizontal range line again, like this, when upward survey is high at an arbitrary position, the scope that as long as its horizontal range does not exceed on the reading dial to be allowed, just can in horizontal range line group, find corresponding survey high scale line, thereby read the height of testee according to the pin situation of accented contour on cross-line of hanging down.

The reading dial that this utility model proposed is that the groove method for designing is different with existing reading dial, material requirements is constant, cost of manufacture does not increase, but, height finder is installed after this reading dial, surveying the datum-plane distance of being allowed when high is some no longer or certain several particular value, but a certain interval of designing as required, implement to survey high on any position in this interval, can both directly read the height of testee from reading dial, thereby will save the time of selecting measuring point, improve the open-air efficient of surveying high workload.

Below in conjunction with accompanying drawing this utility model is described in further detail.

Fig. 1 is that height finder that this kind reading dial has been installed is surveyed the synoptic diagram when high.A point expression point position, eye-level display is divided into h and h ' two parts with the height of tree, adds the overall height that together is only trees after need measuring h and h ' respectively.

Fig. 2 is the front view (FV) according to a kind of concrete structure reading dial of the utility model drafting.The horizontal range range of choice that this reading dial allowed is 10～20 meters, and surveying high scope is above 31 meters of the following 10 meters～eye-level display of eye-level display, and surveying the inclination angle scope is 60 ° at the 30 °～elevation angle, the angle of depression.This figure looks up the situation of surveying when high.

With reference to Fig. 2, at first, with aluminium matter thin plate, hard plastic board or quality cardboard are preferably made the dish substrate ［ 4 ］ of reading dial ［ 3 ］, mark off ［ 11 ］ two parts in angle measurement reading district ［ 10 ］ and survey high scale district again on dish substrate ［ 4 ］.Wherein, be the body design content to survey high scale district ［ 11 ］, angle measurement reading district ［ 10 ］ then designs for the measurement function that increases reading dial.We see the design conditions in angle measurement reading district first.

Angle measurement reading district ［ 10 ］ be by camber line ［ 7 ］,, camber line ［ 8 ］, angle graticule ［ 6 ］ and angle scale value ［ 5 ］ four parts are formed.Wherein, camber line ［ 7 ］ and camber line ［ 8 ］ are to carry out the datum line that the angle graticule is drawn, and all on vertical pin point of rotation O, radius does not have specific (special) requirements in its center of circle, and the method for designing and the principle of angle graticule and angle scale value are identical with common protractor, no longer carefully state here.Below, we mainly illustrate design concept and the method for designing of surveying high scale district ［ 11 ］.

［ 17 ］ and ［ 18 ］ be to be the center of circle with the pin point of rotation O that hangs down on the reading dial, radius is respectively R ₁And R ₂Two camber lines, here, we use R ₁To R ₂Between radial variations interval come corresponding expression to survey the interval L of horizontal range when high ₁To L ₂, thereby interval (R is arranged ₁, R ₂) in R and interval (L ₁, L ₂) in L corresponding relation is arranged

(R-R ₁)/(L-L ₁)=(R ₂-R ₁)/(L ₂-L ₁), R=R just ₁+ (L-L ₁) (R ₂-R ₁)/(L ₂-L ₁) like this, we just available radius be the horizontal range that the camber line of R is represented corresponding L.Here, we claim thisly to be used for representing that the camber line of horizontal range is the horizontal range line that ［ 16 ］ among Fig. 2 promptly are the horizontal range lines.How much what paint the horizontal range line on the reading dial is that size and reading accuracy according to reading dial requires to set, generally can be by L every the rank of 0.5 meter, 1 meter or 2 meters apart from drawing.In Fig. 2, promptly be according to L every 1 meter rank apart from drawing the horizontal range line.After treating that all horizontal range lines are painted, annotate horizontal range value ［ 9 ］ simultaneously at the both ends of horizontal range line again, can then carry out level line ［ 12 ］ the design drawing from the mathematical principle of h=Ltg θ, when L one timing, it is the variation of the change flag h of available θ, and for any horizontal range line on the reading dial, its L value all is certain, the position that θ can be pointed to vertical pin thereon in the former capital indicates corresponding h, we are called the equal point of h value of statistical indicant (just surveying the high scale value) on each horizontal range line and are contour point, it is the set (or line) of contour point on each horizontal range line that level line then is defined as, and the level line among Fig. 2 ［ 12 ］ is promptly drawn according to above definition.The bar number of institute's contouring and rank are apart from being according to the reading dial size and surveying the accuracy requirement of high scale and definite on the reading dial, generally speaking, can whenever be separated by the rank of 0.5 meter or 1 meter apart from drawing by altitude reading, the level line among Fig. 2 promptly is apart from drawing by 1 meter the altitude reading rank of whenever being separated by.After treating that all level lines are painted, put on corresponding altitude reading value again at isocontour both ends and ［ 13 ］.

After the drawing of the basic groove of reading dial is finished, in case of necessity, can also dye with light-coloured transparent pigment to the zone shown in ［ 15 ］, so that the overall general layout of groove is clear, strengthens and survey the high scale effect.

Introduce the using method of this kind reading dial below: this reading dial ［ 3 ］ is fixed on screw or tackifier on the relevant position of height finder ［ 1 ］ and can uses.Its assay method is identical with former height finder.Its number reading method is as follows: one, read angle: directly read according to the vertical position and the angle value at quarter ［ 5 ］ of pin ［ 2 ］ in angle measurement reading graticule ［ 6 ］, state as shown in Figure 2 can be read as to 28 ° two at the elevation angle, read height: at this moment, should know measuring point to the horizontal range L between the testee, as long as the interval L of the horizontal range that L is allowed on reading dial ₁To L ₂In (being 10～20 meters among Fig. 2), just can directly read the height h of testee from reading dial.For example, by situation reading shown in Figure 2, if L=12 rice, then at first find 12 meters horizontal range line during reading along the sensing of the pin ［ 2 ］ that hangs down, can see its intersection point ［ 14 ］ just in time between level line 6-6 and level line 7-7 and be partial to one side of level line 6-6, thereby can be read as highly be 6.3 meters.Also can read on Fig. 2 with above-mentioned same method: during L=16.1 rice, h is 8.5 meters; During L=16.6 rice, h is 8.7 meters; During L=18 rice, h is 9.4 meters or the like.Survey is read the angle of depression and the method for overlooking height and is looked up angle measurement, surveys when high in like manner.

Claims (3)

1, the reading dial that uses on the triangle principle height finder, survey high scale in satisfying between the certain level distance regions on the optional position is characterized in that being painted with horizontal range line [15] and level line [12] on dish substrate [4].

2, reading dial according to claim 1, its horizontal range line ［ 15 ］ is after reading dial is installed on the height finder, some the concentric camber lines on the pin point of rotation that hangs down are dropped in the center of circle, press R=R between the horizontal range L of the radius R of every camber line and camber line representative ₁+ (L-L ₁) (R ₂-R ₁)/(L ₂-L ₁) mathematical relation corresponding, what of the camber line of painting are as the criterion with convenient reading, generally can be by L every the rank of 0.5 meter, 1 meter or 2 meters apart from drawing.

3, reading dial according to claim 1, its level line ［ 12 ］ is a line of surveying the equal point of high scale on each respective horizontal range line, rank distance between institute's contouring and isocontour number are to set according to the size and the reading accuracy needs of reading dial, generally can be by the altitude reading rank of 1 meter or 0.5 meter apart from drawing.