WO2018201566A1

WO2018201566A1 - Laser detection device, and application method thereof

Info

Publication number: WO2018201566A1
Application number: PCT/CN2017/088543
Authority: WO
Inventors: 张瓯; 朱亚平; 宗晓明
Original assignee: 杭州欧镭激光技术有限公司
Priority date: 2017-05-05
Filing date: 2017-06-16
Publication date: 2018-11-08
Also published as: CN107063174A

Abstract

A laser detection device, and application method thereof. A laser beam is divided into parallel beams by means of providing a semi-transmittable semi-reflective lens (202) and a reflective lens (201), and a charge coupling element is incorporated to estimate, according to a fixed distance between two laser points, a distance between objects under test. The device is easy to operate and provides high measurement precision.

Description

Laser measuring device and application method thereof

Technical field

The invention relates to the field of intelligent ranging, and in particular to a laser measuring device and an application method thereof.

Background technique

In the field of architecture, especially in the interior decoration industry, it is often necessary to measure and layout large-area objects. With traditional ruler measurement, the work is cumbersome and the accuracy is low. Laser ranging is quickly obtained due to its convenience and accuracy. Widespread promotion and application by personnel in the field.

At present, the commonly used laser ranging devices are mostly single-point distance measuring devices, which use pulse or continuous laser to irradiate the target to be measured, and calculate the distance between the range finder and the target object by the laser speed and the laser receiving time. Measurement, but when it is necessary to measure the distance between objects, the laser ranging device is usually not directly implemented. In the prior art, there is also a method for measuring the distance between objects by using a laser. For example, CN103234517A proposes to measure the object to be measured multiple times by using a laser range finder, and uses a complicated calculation to obtain the distance between the objects. The above method is cumbersome to operate, and due to the error superposition of multiple operations, the accuracy of the measurement is seriously affected.

Summary of the invention

In order to solve the above problems, the present invention provides a novel laser measuring device which divides a laser beam into parallel beams by providing a transflective lens and a reflecting lens, and in combination with a charge coupled element, according to a constant distance between two laser points, Calculate the distance between the objects to be tested. The device is simple to operate and has high measurement accuracy.

Specifically, an aspect of the present invention provides a laser measuring apparatus including a laser source module and an optical module, wherein a laser beam emitted by the laser source module passes through an optical module to form a distance A constant parallel laser beam is emitted from the laser measuring device.

Preferably, the optical module comprises a reflective lens and a transflective lens, wherein the transflective lens is disposed between the laser source module and the reflective lens, and the laser beam emitted by the laser source module a transmitted beam formed by the transflective lens and a first reflected beam, the transmitted beam again passing through the reflective lens to form a second reflected beam, the second reflected beam being parallel to the first reflected beam.

Preferably, the laser measuring device further comprises an image control module for acquiring an image of the object to be tested, wherein the image includes all the spots formed by the laser beam emitted by the laser measuring device on the object to be tested . Preferably, the image control module may be a charge coupled element.

Preferably, the laser measuring device further comprises an image processing module for calculating two-dimensional geometric data of the object to be tested. The two-dimensional geometric data includes length, width, height, angle, and area.

Preferably, the laser measuring device is further configured to obtain an image of the object to be tested through the image control module and the image processing module of the smart terminal, and calculate the two-dimensional geometric data of the object to be tested.

Another aspect of the present invention provides a method for applying the above laser measuring apparatus, comprising the steps of: S1, starting the laser measuring device, the laser source module emits a parallel laser beam; S2, the image control module acquires An image of the object to be tested containing the laser spot; S3, according to the user's selection, the image processing module acquires the data information in the image acquired in step S2, and calculates the two-dimensional geometric data of the object to be tested, saves and outputs The two-dimensional geometric data.

Wherein, if the geometric data to be measured is the length L, the calculation basis is the formula L=K*L'/K', where K is the distance between the two laser beams, L' is the image display length of L, and K' is The image of K shows the distance; if the geometric data to be measured is the angle α, a virtual right triangle is generated at the position of the angle α to be measured, according to the tangent function α=arctan(A/B), where A is α The image of the right-angled side shows the length, and B is the image display length of the right-angled side adjacent to α.

Compared with the prior art, the technical advantage of the present invention is that the present invention divides the laser beam into parallel beams by providing a transflective lens and a reflecting lens, in combination with the charge coupling element, according to two The constant distance between the laser points is used to derive the distance between the objects to be tested. The device has simple operation and high measurement accuracy; the invention can not only rely on the laser measuring device itself to carry the image control and processing module to realize image data acquisition and processing, but also can connect existing intelligent terminals, relying on its image control and processing module to realize The acquisition and processing of the image data reduces waste of resources generated by repeatedly setting the image control and processing module in the laser measuring device itself, and reduces the generation cost.

DRAWINGS

1 is a schematic view of a laser measuring device in accordance with a preferred embodiment of the present invention;

Figure 2 is a schematic illustration of a laser measuring device in accordance with another preferred embodiment of the present invention;

Figure 3 is a structural view of a laser measuring apparatus in accordance with a preferred embodiment of the present invention;

Fig. 4 is a view showing a state of use of a laser measuring apparatus in accordance with a preferred embodiment of the present invention.

detailed description

Advantages of the present invention are further elaborated below in conjunction with the drawings and specific embodiments.

Referring to FIG. 1, there is shown a structural view of a laser measuring apparatus according to a preferred embodiment of the present invention. As can be seen from the figure, the present embodiment provides a laser measuring apparatus, which specifically includes a laser source module and an optical module, wherein The laser source module is excited to emit a laser beam, and after the emitted laser beam is processed by the optical module, the original single laser beam will form a plurality of parallel laser beams with a constant distance, so that the laser measuring device can emit multiple parallel beams. Laser beam. This is not the same as a conventional single beam laser emitting device.

Referring to FIG. 3, it can be seen that the optical module 20 in the laser measuring device of the embodiment includes a reflective lens 201 and a transflective lens 202, wherein the transflective lens 202 is disposed on the reflective lens 201 and the laser source module. Between 10. Thus, when the laser measuring device is activated, the laser beam 101 emitted by the laser source module 10 first enters the transflective lens 202, and the laser beam passes through the refraction and reflection of the transflective lens 202 to form the transmitted beam 102, respectively. And the first reflected light beam 103; the transmitted light beam 102 transmitted by the transflective lens 202 is incident on the reflective lens 201, and then reflected by the reflective lens 201 to form a second reflected light beam 104. In this embodiment, By fixing the transflective lens 202 and adjusting the position of the reflective lens 201 according to the direction of the transmitted light beam emitted from the transflective lens 202, the reflected light beam 103 reflected by the transflective lens 202 is reflected by the reflective lens 201. The reflected beams 104 are parallel. And keeping the transflective lens 202 and the reflecting mirror 201 fixed, the distance between the parallel laser beams emitted by the laser measuring device is also fixed.

Referring again to FIG. 1, the laser measuring device provided in this embodiment is further provided with an image control module. When the laser measuring device is excited and emits a parallel laser beam to be irradiated onto the object to be tested, the laser measuring device can obtain the inclusion by the module. An image of the object to be measured of all laser spots, which is an equal-scaled image of the object to be measured, thereby reducing the size of the object to be measured that is too large to be measured to a size range that can be easily measured. Wherein, preferably, the image control module can be a charge coupled device (CCD) or other image input element.

In the meantime, the laser measuring device provided in this embodiment is further provided with an image processing module, which can automatically read relevant data information from the image of the object to be measured acquired by the image control module, and calculate the object to be tested according to the user's selection. Related 2D geometric data. Preferably, wherein the two-dimensional geometric data of the object to be tested comprises relevant data of length, width, height and area waiting for the object to be measured in a two-dimensional plane.

Referring to Figure 2, there is shown a structural view of a laser measuring apparatus according to another preferred embodiment of the present invention. As can be seen from the figure, the laser measuring apparatus of the present invention can also be connected to an intelligent terminal by means of an image carried by the intelligent terminal. The control module and the image processing module complete the acquisition of the image of the object to be tested and the calculation of the corresponding two-dimensional geometric data. For example, the laser measuring device in the embodiment can be connected to the smart phone, and the corresponding APP is loaded on the smart phone, and the image of the object to be tested is captured by using the CCD on the lens of the smart phone, and then selected on the APP. And complete the data processing to obtain the corresponding two-dimensional geometric data of the object to be tested.

Referring to Figure 4, there is shown a state of use of a laser measuring apparatus in accordance with a preferred embodiment of the present invention. It can be seen from the figure that the application method of the laser measuring device proposed in this embodiment may include the following steps:

S1, starting the laser measuring device, the laser source module emits a parallel laser beam; when the user After the object to be tested is selected, the laser measuring device can be held in front of the object to be tested, and the laser measuring device is activated to irradiate the parallel laser beam emitted by the laser source module onto the object to be tested.

S2. The image control module acquires an image of the object to be tested including the laser spot; and selects the geometric data to be measured, such as length, width, height, angle or area, and an area including all laser spots, and starts the image control module. Obtain the corresponding image of the object to be tested.

S3. The image processing module reads the data information in the image acquired in step S2 according to the user's selection, calculates the two-dimensional geometric data of the object to be tested, and saves and outputs the two-dimensional geometric data. The user can select a corresponding program, the laser measuring device or the image processing module of the smart terminal connected thereto to read the corresponding data information in the image acquired in step S2 according to the needs of the user. And according to a certain calculation principle, the corresponding geometric data of the object to be tested is calculated. Finally, the calculated data is stored or output in the form of a data table for use by the user.

Preferably, if the geometric data to be measured is the length L, the calculation basis is the formula L=K*L'/K', where K is the distance between the two laser beams, and L' is the image display length of L, K' Displaying the distance for the image of K; if the geometric data to be measured is the angle α, a virtual right-angled triangle is generated at the position of the angle α to be measured, according to the tangent function α=arctan(A/B), where A is α The image of the right-angled side of the pair shows the length, and B is the image display length of the right-angled side adjacent to α. Moreover, by using the calculation principle of the length, the invention can obtain the area of the object to be tested by measuring the length and the width or the length of the object to be tested, and similarly, by measuring the length, width and height of the object to be tested, it can be obtained. Measure the volume of the object, etc.

In summary, the present invention divides the laser beam into parallel beams by providing a transflective lens and a reflecting lens, and reduces the size of the inconvenient measurement to a measurable size by combining the charge coupled elements, and according to the two laser points. A constant distance is used to derive the distance between the objects to be tested. The device has simple operation and high measurement accuracy; the invention can not only rely on the laser measuring device itself to carry the image control and processing module to realize image data acquisition and processing, but also can connect existing intelligent terminals, relying on its image control and processing module to realize Acquisition and processing of image data, reducing repetition in the laser measuring device itself Set the waste of resources generated by the image control and processing module, reducing the cost of generation.

It should be noted that the embodiments of the present invention are preferred embodiments, and are not intended to limit the scope of the present invention. Any one skilled in the art may use the above-disclosed technical contents to change or modify the equivalent embodiments. Any modification or equivalent changes and modifications of the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A laser measuring device comprising a laser source module and an optical module, characterized in that

The laser beam emitted by the laser source module passes through the optical module to form a parallel laser beam of constant distance and is emitted by the laser measuring device.
A laser measuring apparatus according to claim 1, wherein

The optical module includes a reflective lens and a transflective lens.

Wherein the transflective lens is disposed between the laser source module and the reflective lens, and the laser beam emitted by the laser output source passes through the transflective lens and the first reflected beam The transmitted beam again passes through the reflective lens to form a second reflected beam, and the second reflected beam is parallel to the first reflected beam.
A laser measuring apparatus according to claim 1, further comprising an image control module for acquiring an image of the object to be measured, wherein said image contains a laser beam emitted by said laser measuring device Measure all the spots formed on the object.
The laser measuring device of claim 3 wherein said image control module comprises a charge coupled component.
The laser measuring apparatus according to claim 3, further comprising an image processing module for calculating two-dimensional geometric data of the object to be measured.
A laser measuring apparatus according to claim 5, wherein said two-dimensional geometric data comprises length, width, height, angle, and area.
The laser measuring device according to claim 1, comprising an external smart terminal, wherein the intelligent terminal sets an image control module and an image processing module, configured to acquire an image of the object to be tested, and calculate an object to be tested. 2D geometric data.
A method of applying a laser measuring device according to any of claims 1-7, comprising the steps of:

S1, starting the laser measuring device, and the laser source module emits a parallel laser beam;

S2. The image control module acquires an image of the object to be tested that includes the laser spot;

S3. The image processing module acquires the data information in the image acquired in step S2 according to the user's selection, calculates the two-dimensional geometric data of the object to be tested, and saves and outputs the two-dimensional geometric data.
The application method according to claim 8, wherein if the geometric data to be measured is the length L, the calculation is based on the formula L=K*L'/K', where K is the distance between the two laser beams, L' is the image display length of L, and K' is the image display distance of K.
The application method according to claim 8, wherein if the geometric data to be measured is the angle α, a virtual right-angled triangle is generated at the position of the angle α to be measured, according to the tangent function α=arctan(A/B) Where A is the image display length of the right-angled side to which α is set, and B is the image display length of the right-angled side adjacent to α.