CN204575052U - A kind of plane normal azimuth measuring device - Google Patents

Abstract

The utility model discloses a kind of plane normal azimuth measuring device, comprise levelling support, be installed on the host computer system on described support, described host computer system comprises laser beam emitting device, inflector assembly, reflected light receiving trap, radio compass and control device, control device connects and controls laser beam emitting device and inflector assembly, connects simultaneously and receives the measuring-signal of described reflected light receiving trap, radio compass, and calculating the plane normal position angle of plane to be measured.Device of the present utility model accurately can obtain the azimuth angle of normal of arbitrary plane.Being installed on aerogenerator described in application, by measuring the position angle of slip ring section, accurately can obtaining the axis direction angle of vane rotary plane, for blower fan data analysis, optimize the data supporting that necessity is provided.

Description

A kind of plane normal azimuth measuring device

Technical field

The utility model relates to a kind of plane normal azimuth measuring device.

Background technology

Position angle, also known as azimuth, is from the north pointer direction line of certain point, according to the horizontal sextant angle between clockwise direction to target direction line.The weathervane datum axis of aerogenerator points to parallel with vane rotary plane normal, accurately especially crucial to wind to wind energy conversion system.Therefore, accurately adjustment weathervane datum axis then needs the position angle of the normal of Accurate Determining vane rotary plane.

Utility model content

The purpose of this utility model is to provide a kind of plane normal azimuth measuring device, can measure arbitrary plane azimuth angle of normal simply, accurately and efficiently, can be applicable in the weathervane datum axis adjustment of aerogenerator.

For achieving the above object, the utility model adopts following technical scheme:

A kind of plane normal azimuth measuring device, comprise levelling support, be installed on the host computer system on described support, described host computer system comprises: laser beam emitting device, for Emission Lasers bundle; Inflector assembly, is connected with described laser beam emitting device, for changing radiating laser beams direction; Reflected light receiving trap, for calculating the projection distance of laser beam by receiving laser reflection signal; Radio compass, for measuring the position angle of the laser-based directrix of laser beam emitting device; And control device, connect and control laser beam emitting device and inflector assembly, connect simultaneously and receive the measuring-signal of described reflected light receiving trap, radio compass, and calculating the plane normal position angle of plane to be measured.

Further, the electronic gyroscope for measuring the angle produced due to laser beam emitting device displacement is also comprised.

Further, the level meter for showing support whether leveling is also comprised.

Further, the GPS locating device for recording current measurement position and time is also comprised.

Further, described host computer system outside is provided with housing, and described housing is provided with the display screen be connected with control device.

Further, described inflector assembly is the stepper motor that deflecting mirror maybe can drive described laser beam emitting device and rotates.

Further, described reflected light receiving trap is range sensor.

Further, described laser beam emitting device is multiple.

Owing to adopting technique scheme, the utility model at least has the following advantages:

(1) azimuth angle of normal of arbitrary plane can be obtained simply, accurately and efficiently.

(2) plane normal azimuth measuring device, can avoid the interference in electrical equipment magnetic field in environment, and realizes measuring process robotization, reduces human factor impact to greatest extent and enhances productivity.

(3) being applied to aerogenerator, by measuring the position angle of slip ring section, accurately can obtaining the axis direction angle of vane rotary plane, for blower fan data analysis, optimize the data supporting that necessity is provided.

Accompanying drawing explanation

Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.

Fig. 1 is plane normal azimuth measuring device structural representation of the present utility model.

Fig. 2 is the determination process schematic of plane normal to be measured at surface level projection line oc.

Fig. 3 adopts the azimuthal first method schematic diagram of measurement device plane normal of the present utility model.

Fig. 4 adopts the azimuthal second method schematic diagram of measurement device plane normal of the present utility model.

Embodiment

The utility model provides a kind of plane normal azimuth measuring device, comprises levelling support, is installed on the host computer system on described support, and described host computer system comprises: laser beam emitting device, for Emission Lasers bundle; Inflector assembly, is connected with described laser beam emitting device, for changing radiating laser beams direction; Reflected light receiving trap, for calculating the projection distance of laser beam by receiving laser reflection signal; Radio compass, for measuring the position angle of the laser-based directrix of laser beam emitting device; And control device, connect and control laser beam emitting device and inflector assembly, connect simultaneously and receive the measuring-signal of described reflected light receiving trap, radio compass, and calculating the plane normal position angle of plane to be measured.

In above-mentioned measurement mechanism, laser beam can be increased and realize high precision range observation as arranged multiple laser beam emitting device, thus improve the measuring accuracy of package unit; Inflector assembly can be set to deflecting mirror, also can replace with the scheme of other deflected beams, as rotated by driving stepper motor laser beam emitting device, or drives package unit to rotate.Reflected light receiving trap can adopt range sensor.

Further, electronic gyroscope can also be increased, for measuring the deflection angle α because measurement mechanism displacement makes laser beam emitting device datum line produce; GPS locating device can be increased, record current measurement position and Measuring Time; The level meter of display support whether leveling can be increased, preferred electron level meter.

As preferred specific embodiment, refer to shown in Fig. 1, plane normal azimuth measuring device of the present utility model comprises the support with levelling device, rack-mount host computer system, host computer system comprises control device, the laser beam emitting device be connected with control device respectively, deflecting mirror, reflected light receiving trap, electronic gyroscope, radio compass and level meter.Host system configuration housing, physical button and display screen etc., and adopt rechargeable battery to be that each parts are powered.

Specifically, each component function is as follows:

Laser beam emitting device: Emission Lasers pulse.

Deflecting mirror: change Laser Transmission direction, by rotational angle data back to control device.

Reflected light receiving trap: receive reflected laser pulse.

Radio compass: the position angle measuring the laser-based directrix (the initial laser direction without deflecting mirror deflection) of laser beam emitting device, with control device communication, passback measurement of azimuth result.During installation, radio compass is parallel with the datum line of laser beam emitting device.

Electronic gyroscope: measuring equipment moves the deflection angle α in the initial laser beam direction of causing.

Support by retractable support lever leveling, and shows whether furnishing level by level meter.

Control device: control deflecting mirror action, reception and process deflecting mirror corner data, control laser beam emitting device, process reflected light receiving trap signal draw range reading, process electronic gyroscope measurement data, control display screen and export, calculate plane normal position angle to be measured, record Measuring Time and measurement result, communicate with PC and radio compass.

Utilize measurement device plane normal position angle of the present utility model, can following steps be adopted: support described in A. leveling, measure the azimuth angle theta of laser beam emitting device laser-based directrix; B. start laser beam emitting device, to planar transmit laser beam to be measured, while making laser beam maintenance level by inflector assembly, deflect different angles; C. gather the laser signal of plane reflection to be measured, to obtain under different deflection angle laser beam to the projection distance of plane to be measured; D. the deflection angle β of the initial laser beam corresponding when projection distance is minimum is found out; E. the position angle γ of plane normal to be measured is calculated according to γ=θ+β.

Specifically, shown in Fig. 3, arrange the reference frame oxyz (rectangular coordinate system) of proving installation, wherein y-axis overlaps with undeflected laser beam, xy plane and plane-parallel, and deflecting mirror can rotate around z-axis.Measuring process is as follows:

1) when plane site to be measured electromagnetic interference (EMI) is larger, first weak/without leveling support under electromagnetic interference environment, laser beam emitting device is by leveling, its launch initial laser beam oa (without deflection laser beam directive) for level to, recorded the azimuth angle theta of oa by radio compass, then mobile device is to plane site to be measured and leveling.Because equipment moving oa line has deflected angle [alpha] (being recorded by electronic gyroscope), now oa overlaps with y-axis.Measure the projection line oc (laser beam directive deflection after) of plane normal to be measured in xy plane and the angle β (controlling by deflecting mirror) of y-axis, then the position angle γ=θ+alpha+beta of plane normal to be measured.

2) when plane site to be measured is without electromagnetic interference (EMI), or electromagnetic interference (EMI) more weak time, after equipment leveling, y-axis azimuth angle theta in direct survey sheet, measures the projection line oc of plane normal to be measured in xy plane and the angle β of y-axis, then position angle γ=θ+β of plane normal to be measured.

In said process, find project in the xy plane process of oc line of plane normal to be measured as follows:

Laser beam scans along straight line section ef in plane to be measured through deflection.Because deflecting mirror rotates around z-axis, ef is in xy plane.Record oc line length the shortest (oc is perpendicular to ef) by range sensor, then oc line is exactly plane normal to be measured projection in the horizontal plane.Relevant proof is as follows:

As shown in Figure 2, set up two cover right hand rectangular coordinate systems, be respectively proving installation coordinate system oxyz, plane coordinate system cx2y2z2 to be measured.Wherein oxyz coordinate system x-axis is the laser beam direction of propagation without deflecting mirror deflection, x, y plane and plane-parallel.The y2 axle of plane coordinate system to be measured is the intersecting lens of plane to be measured and proving installation coordinate system xy plane.Two cover coordinate origin line oc and y2 are vertical.

Because z2 and y2 is vertical, oc line is vertical with y2, thus y2 be oc, z2 axle determine the normal of plane.Again because cross c, only have a plane vertical with y2, and x2z2 and y2 is vertical, so oc is in x2z2 plane.

Because xy plane crosses x2z2 plane normal, i.e. y2, so x2z2 plane and xy plane orthogonal.Again because xy plane and plane-parallel, so x2z2 plane and horizontal plane.

Therefore, according to the definition of projection line, oc is the projection in the horizontal plane of x2 axle.

Refer to shown in Fig. 4, utilize described measurement mechanism also to obtain the azimuth angle of normal of plane to be measured by following methods, specifically, comprise the steps: support described in A. leveling, measure the azimuth angle theta of laser beam emitting device laser-based directrix; B. start laser beam emitting device, to planar transmit initial laser beam to be measured, and gather the laser signal of now plane reflection to be measured, obtain the projection distance s of initial laser beam to plane to be measured; C. deflection angle η while making laser beam maintenance level by inflector assembly, gathers the laser signal of now plane reflection to be measured, obtains the projection distance l of the laser beam after deflection to plane to be measured; D. by following formula calculate projection distance minimum time beam direction and initial laser beam direction between angle β:

$\mathrm{\β}={\tan }^{-1}\left(\frac{s-l\cos \mathrm{\η}}{l\sin \mathrm{\η}}\right)$

E. the position angle γ of plane normal to be measured is calculated according to γ=θ+β.

Similarly, when plane to be measured is in electromagnetic interference (EMI) district, the azimuth angle theta in described steps A corrects in the following way: the azimuth angle theta first obtaining initial laser beam in non-electromagnetic interference (EMI) district ₀, then place laser beam emitting device to the electromagnetic interference (EMI) district residing for plane to be measured and after leveling, measure the angle [alpha] that laser beam emitting device displacement produces, then correct back bearing θ=θ ₀+ α.

The reckoning process of above-mentioned angle β is as follows:

As shown in Figure 4, od line is laser initial transmissions direction, its projection distance equal od line length (namely in above formula s), after rotating a given angle η, ob line is Laser emission direction, its projection distance equal ob line length (namely in above formula l), if the angle of oc line (i.e. shortest distance lines) and od line is β

According to the projection of od and ob on oc line equal (all equaling oc), then have:

$\stackrel{\‾}{\mathrm{od}}\cos \mathrm{\β}=\stackrel{\‾}{\mathrm{ob}}\cos (\mathrm{\β}-\mathrm{\η})$

According to trigonometric function and difference eliminate indigestion formula:

$\stackrel{\‾}{\mathrm{od}}\cos \mathrm{\β}=\stackrel{\‾}{\mathrm{ob}}(\cos \mathrm{\β}\cos \mathrm{\η}+\sin \mathrm{\η}\sin \mathrm{\β})$

Merge like terms:

$(\stackrel{\‾}{\mathrm{od}}-\stackrel{\‾}{\mathrm{ob}}\cos \mathrm{\η})\cos \mathrm{\β}=\stackrel{\‾}{\mathrm{ob}}\sin \mathrm{\η}\sin \mathrm{\β}$

$\tan \mathrm{\β}=\left(\frac{\stackrel{\‾}{\mathrm{od}}-\stackrel{\‾}{\mathrm{ob}}\cos \mathrm{\η}}{\stackrel{\‾}{\mathrm{ob}}\sin \mathrm{\η}}\right)$

Therefore,

$\mathrm{\β}={\tan }^{-1}\left(\frac{\stackrel{\‾}{\mathrm{od}}-\stackrel{\‾}{\mathrm{ob}}\cos \mathrm{\η}}{\stackrel{\‾}{\mathrm{ob}}\sin \mathrm{\η}}\right)$

Above-mentioned plane normal azimuth measuring device and method, be applied to aerogenerator, by measuring the position angle of the normal of slip ring section, using the axis direction angle value of its value as vane rotary plane, and adjust the weathervane datum axis of aerogenerator accordingly, thus for blower fan data analysis, optimize necessary data supporting be provided.

The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.

Claims (8)

1. a plane normal azimuth measuring device, is characterized in that, comprises levelling support, is installed on the host computer system on described support, and described host computer system comprises:

Laser beam emitting device, for Emission Lasers bundle;

Inflector assembly, is connected with described laser beam emitting device, for changing radiating laser beams direction;

Reflected light receiving trap, for calculating the projection distance of laser beam by receiving laser reflection signal;

Radio compass, for measuring the position angle of the laser-based directrix of laser beam emitting device;

And control device, connect and control laser beam emitting device and inflector assembly, connect simultaneously and receive the measuring-signal of described reflected light receiving trap, radio compass, and calculating the plane normal position angle of plane to be measured.

2. plane normal azimuth measuring device according to claim 1, is characterized in that, also comprises the electronic gyroscope for measuring the angle produced due to laser beam emitting device displacement.

3. plane normal azimuth measuring device according to claim 1, is characterized in that, also comprises the level meter for showing support whether leveling.

4. plane normal azimuth measuring device according to claim 1, is characterized in that, also comprises the GPS locating device for recording current measurement position and time.

5. plane normal azimuth measuring device according to claim 1, is characterized in that, described host computer system outside is provided with housing, and described housing is provided with the display screen be connected with control device.

6. plane normal azimuth measuring device according to claim 1, is characterized in that, described inflector assembly is the stepper motor that deflecting mirror maybe can drive described laser beam emitting device and rotates.

7. plane normal azimuth measuring device according to claim 1, is characterized in that, described reflected light receiving trap is range sensor.

8. plane normal azimuth measuring device according to claim 1, is characterized in that, described laser beam emitting device is multiple.