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WO2018171277A1 - 一种激光投线仪 - Google Patents

一种激光投线仪 Download PDF

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Publication number
WO2018171277A1
WO2018171277A1 PCT/CN2017/118386 CN2017118386W WO2018171277A1 WO 2018171277 A1 WO2018171277 A1 WO 2018171277A1 CN 2017118386 W CN2017118386 W CN 2017118386W WO 2018171277 A1 WO2018171277 A1 WO 2018171277A1
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laser
module
line projector
laser beam
laser line
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PCT/CN2017/118386
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English (en)
French (fr)
Inventor
张瓯
夏蒙扬
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常州华达科捷光电仪器有限公司
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Publication of WO2018171277A1 publication Critical patent/WO2018171277A1/zh

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  • the invention relates to a laser line projector in the field of construction.
  • the optical structure of the existing laser line projector is to focus and collimate with an aspheric lens after a single point source is emitted, and then selectively split by reflection or transmission or a half mirror, and finally directly cast Draw a line out or through a cylindrical mirror. Therefore, the common laser line projector achieves a slight change in the combination of point and line to form various combinations, such as two lines, four lines, two lines and five points.
  • Such a fixed laser module and its splitting method structurally define the applicability of an instrument.
  • this patent proposes a micromirror system that replaces the structure of the conventional laser module.
  • the shape of the laser line can be changed at any time according to actual needs, and at the same time, some problems compatible with the movement mechanism of the laser line projector are solved, and the problem is greatly improved. The practicality of this product.
  • the micromirror line projector replaces the original collimating beam splitter system with the micromirror optical system on the basis of the conventional laser line projector.
  • the micromirror optical system is not restricted by distance and does not require focusing, and has the characteristics of small volume, light weight and high reliability. Due to the characteristics of its scanning imaging, the image displayed on the target object can be defined by editing the program.
  • the micro mirror can scan a point, a horizontal line, a line segment of a certain length, two mutually perpendicular lines, and the like.
  • the invention discloses a laser line finder comprising: a laser source module emitting a laser beam; a micromirror optical module receiving the laser beam; the micromirror optical module comprising a micro scanning lens, the micro scanning lens being in a mutual Moving in two perpendicular directions, the laser beam is reflected by the micro-scanning lens to a target object, the target object reflects the laser beam back to the scanning galvanometer module to form a reflected laser; the light detecting module Receiving a reflected laser light of the laser beam and converting the reflected laser light into an electrical signal; and a data processing module connected to the light detecting module, receiving the electrical signal and calculating distance data of the target object.
  • the laser line projector is provided with a magnetic ring, and the magnetic ring is connected with the micro-scanning lens, and the magnetic ring slows down the micro-scanning lens by electromagnetic damping when the micro-scanning lens moves shock.
  • the existing laser collimation instrument adopts a movement structure of a hammer type, so as to ensure that the overall posture of the movement including the laser exit module is kept vertical, thereby ensuring that the projected laser line is not affected by the placement surface. Any tilt.
  • a laser line projector equipped with a micromirror system in the past, partly because the micromirror system generates high frequency vibration during operation, and this vibration will affect the hammer structure of the laser line projector. Causes a certain amount of shaking.
  • the solution provided by this patent is to add a magnetic ring inside the casing to overcome the influence of the high frequency vibration of the micromirror by electromagnetic damping.
  • the light detecting module and the data processing module are disposed in an embedded unit.
  • the laser line projector further comprises: a laser modulation module for modulating the laser intensity and the emission time of the laser source module.
  • the laser line projector further comprises: a communication module, which is in interactive communication with a mobile device.
  • the laser line projector further comprises: a human-computer interaction module, wherein the human-machine interaction module comprises a user interface and a display.
  • the laser line projector further comprises: a power module, which is provided by one of a disposable battery pack, a rechargeable battery or an external regulated power supply.
  • a power module which is provided by one of a disposable battery pack, a rechargeable battery or an external regulated power supply.
  • FIG. 1 is a schematic structural view of a system of a laser line projector in accordance with a preferred embodiment of the present invention
  • the laser line projector includes the following equipment:
  • the laser source module is disposed inside the laser line projector and emits a laser beam outward.
  • the micromirror optical module includes a micro-scanning lens that moves in two directions perpendicular to each other such that the laser beam is reflected by the micro-scanning lens to a target object, and the target object is The laser beam is reflected back to the scanning galvanometer module to form a reflected laser.
  • the scanning galvanometer module After the scanning galvanometer module receives the reflected laser light, the reflected laser light is reflected to the light detecting module. After receiving the reflected laser light, the light detecting module converts the reflected laser light into an electrical signal, and further processes the electrical signal.
  • the electrical signal may include the frequency, phase, intensity, etc. of the laser beam emitted by the laser source module, as well as the frequency, phase, intensity, etc. of the reflected laser light.
  • the device is connected to the light detecting module, receives the electrical signal converted by the light detecting module and the information of the laser beam carried in the electrical signal, and processes the information to calculate the distance data between the target object and the laser source. Specifically, after the electrical signal is transmitted by the light detecting module to the data processing module, the data processing module extracts the information of the laser beam from the electrical signal, and calculates the cause of the phase difference according to the corresponding principle, that is, the target object. Distance data.
  • the light detecting module and the data processing module can be placed in an embedded unit, which is convenient for the user to program, and can realize the handheld of the laser line projector.
  • a magnetic ring is provided within the laser line projector.
  • the magnetic ring is coupled to the micro-scanning lens.
  • the magnetic ring is a ring-shaped magnet.
  • the magnetic ring is a commonly used anti-jamming component in electronic circuits, and the magnetic ring mitigates the vibration of the micromirror scanning lens by electromagnetic damping.
  • the laser line projector further includes a laser modulation module that can select different modulation modes for incorrect measurement requirements. For example, when the measured value is calculated based on the time difference of the laser emission reception, the pulse modulation mode can be selected, and when the measured value is calculated based on the phase difference received by the laser emission, the sinusoidal waveform mode can be selected. Therefore, for different modes of demand, the laser modulation module can adjust the laser beam emitted by the laser source module to be converted into a desired form.
  • the laser scanning device of the present invention further includes a communication module or a human-machine interaction module for further convenience of the user's operation.
  • the communication module can communicate with the mobile device, and the mobile device can be installed with application software, and the user can switch to indirectly through the communication module to the drive circuit through operation of the application software.
  • the human-computer interaction module can provide an operation interface to a user who does not have a mobile device, and includes a user interface and a display, and the user can directly input an instruction in the user interface.
  • the laser scanning device can be a combination of a separate device with the mobile device or a separate option from the mobile device.
  • the human-computer interaction module can be placed inside the laser scanning device or in an external fixed position. This embodiment does not limit the locations of the communication module, the mobile device, and the human-machine interaction module.
  • the power supply of the laser scanning device can be provided by the power module.
  • the power module can be a disposable battery pack and manually replaced by a user; or a rechargeable battery, such as a lithium battery, can be connected to an external power supply; or directly connected An external regulated power supply is an alternative.

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Abstract

一种激光投线仪，包括：激光源模块，发出激光束；微镜光学模块，接收激光束，并将激光束反射至一目标物体，目标物体将激光束反射回微镜光学模块形成反射激光；光检测模块，接收反射激光，并将反射激光转换为电信号；数据处理模块，与光检测模块连接，接收电信号并计算目标物体的距离数据。用振镜结构替代了传统激光模组结构，使得所投射的激光具有可编程性，突破了以往固定的点与线的组合。如此，可以根据实际需要设定仪器投射出的激光线的式样，给建筑施工带来极大便利。

Description

一种激光投线仪 技术领域
本发明涉及建筑领域的一种激光投线仪。
背景技术
现有的激光投线仪采用的光学结构，是在单一点光源发射之后利用非球面透镜进行聚焦和准直，然后再选择性地通过反射或透射或半透半反镜进行分光，最后直接投出点或通过柱面镜投出线。因此，常见的激光投线仪达到的效果都是在点与线组合的基础上发生略微的变化而形成各种组合，例如两线、四线一点、两线五点等。这样的固定的激光模组及其分光方式在结构上限定了一台仪器的适用性。
为此本专利提出了一种替代传统激光模组结构的微镜系统，可根据实际需要随时改变激光线的形状，同时解决了与激光投线仪的机芯机构兼容的一些问题，大大提高了这款产品的实用性。
发明内容
本专利提供的微镜投线仪在传统激光投线仪的基础上，将微镜光学系统替代了原本的准直分光镜系统。所述微镜光学系统不受距离远近制约，且不需对焦，还具有体积小，重量轻，可靠性高等特点。由于其扫描成像的特点，将可通过编辑程序的方式自行定义在目标物体上显示的图像。应用在激光投线仪上，可以让微镜扫描出一个点、一条水平直线、一条具体某长度的线段、两条相互垂直的直线等。
本发明公开了一种激光投线仪，包括：激光源模块，发出激光束；微镜光学模块，接收所述激光束；所述微镜光学模块包括微型扫描镜片，所述微型扫描镜片在相互垂直的两个方向上进行移动，使得所述激光束经所述微型扫描镜片反射至一目标物体，所述目标物体将所述激光束反射回所述扫描振镜模块形成反射激光；光检测模块，接收所述激光束的反射激光，并将所述反射激光转换为电信号；数据处理模块，与所述光检测模块连接，接收所述电信号并计算所述目标物体的距离数据。
优选地，所述激光投线仪内设有磁环，所述磁环与所述微型扫描镜片连接，当所述微型扫描镜片移动时，所述磁环通过电磁阻尼减缓所述微型扫描镜片的震动。现有的激光准直仪器采用的机芯结构为吊锤式，这样的目的是确保包含激光出射模组的机芯整体姿态保持竖直，从而确保投射出的激光线不受放置面的影响发生任何倾斜。在此前没有出现过搭载微镜系统的激光投线仪，有一定程度上是由于微镜系统在工作时会发生高频振动，这种振动将会对激光投线仪的吊锤结构产生影响并导致一定幅度的晃动。为此，本专利提供的方案是在壳体内部添加磁环，通过电磁阻尼来克服微镜高频振动带来的影响。
优选地，所述光检测模块及数据处理模块置于一嵌入式单元内。
优选地，所述激光投线仪还包括：激光调制模块，用于调制所述激光源模块的激光强度和发射时间。
优选地，所述激光投线仪还包括：通信模块，与一移动设备交互通信。
优选地，所述激光投线仪还包括：人机交互模块，所述人机交互模块包括有用户界面、显示器。
优选地，所述激光投线仪还包括：电源模块，所述电源模块由一次性电池包、可充电电池或外部稳压电源之一提供。
附图说明
图1为符合本发明一优选实施例中激光投线仪的系统结构示意图；
具体实施方式
以下结合附图与具体实施例进一步阐述本发明的优点。
参阅图1，本发明中，激光投线仪包括有以下设备：
激光源模块
作为激光投线仪的核心设备，激光源模块设于激光投线仪的内部，向外发出激光束。
微镜光学模块
所述微镜光学模块包括微型扫描镜片，所述微型扫描镜片在相互垂直的两个方向上进行移动，使得所述激光束经所述微型扫描镜片反射至一目标物体，所述目标物体将所述激光束反射回所述扫描振镜模块形成反射激光。
光检测模块
当扫描振镜模块接收反射激光后，将反射激光反射至光检测模块处，接收到反射激光后，光检测模块将反射激光转换为电信号，待后续对电信号进一步处理。电信号可包括激光源模块发出的激光束的频率、相位、强度等，以及反射激光的频率、相位、强度等。
数据处理模块
与光检测模块连接，接收光检测模块所转换的电信号及电信号内所承载的激光束的信息，并对上述信息进行处理，以计算得出目标物体与激光源的距离数据。具体地，当电信号由光检测模块传输至数据处理模块后，数据处理模块自电信号中提取激光束的信息，并根据相应的原理，计算得出相位差导致的原因，也即目标物体的距离数据。
上述实施例中，光检测模块和数据处理模块可置于一嵌入式单元内，方便使用者对其编程，可实现将激光投线仪手持化。
优选地或可选地，所述激光投线仪内设有磁环。所述磁环与所述微型扫描镜片连接。磁环是一块环状的导磁体。磁环是电子电路中常用的抗干扰元件，磁环通过电磁阻尼减缓所述微镜扫描镜片的震动。
优选地或可选地，激光投线仪还包括有激光调制模块，可针对不对的测量要求选择不同的调制模式。如，当以激光发射接收的时间差为基础计算测量值时，可选择脉冲调制模式，当以激光发射接收的相位差为基础计算测量值时，可选择正弦曲线波形模式。因此，针对不同需要的模式，激光调制模块可将激光源模块发出的激光束进行调整，以转化为期望的形式。
鉴于本发明中的激光扫描装置可手持化，为进一步方便使用者的操作，激光扫描装置还包括通信模块或人机交互模块。如为了与使用者的智能设备进行互联，通信模块可与移动设备交互通信，移动设备内可安装有应用软件，使用者可通过对应用软件的操作，转换为间接地通过通信模块转发至驱动电路的操作。而人机交互模块可以向不具有移动设备的使用者提供操作界面，其包括有用户界面和显示器，使用者可直接在用户界面输入指令，可以理解的是，即便是使用者使用智能设备的情况下，激光扫描装置可以是和移动设备结合成单独装置的选择，亦或是与移动设备独立的选择。而人机交互模块可置于激光扫描装置的内部，亦或是外部固定位置的设置。本实施例并未对通信模块、移动设备和人机交互模块的位置进行限定。
而实施例中激光扫描装置的供电可由电源模块提供，电源模块可以是一次性电池包，由使用者人工替换；或是可充电电池，如锂电池等，接外部电源供电；亦或是直接外接一外部稳压电源，均是可选择的方式。
应当注意的是，本发明的实施例有较佳的实施性，且并非对本发明作任何形式的限制，任何熟悉该领域的技术人员可能利用上述揭示的技术内容变更或修饰为等同的有效实施例，但凡未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何修改或等同变化及修饰，均仍属于本发明技术方案的范围内。

Claims (7)

  1. 一种激光投线仪，其特征在于，包括：
    激光源模块，发出激光束；
    微镜光学模块，接收所述激光束；
    所述微镜光学模块包括微型扫描镜片，所述微型扫描镜片在相互垂直的两个方向上进行移动，使得所述激光束经所述微型扫描镜片反射至一目标物体，所述目标物体将所述激光束反射回所述扫描振镜模块形成反射激光；
    光检测模块，接收所述激光束的反射激光，并将所述反射激光转换为电信号；
    数据处理模块，与所述光检测模块连接，接收所述电信号并计算所述目标物体的距离数据。
  2. 如权利要求1所述的激光投线仪，其特征在于，所述激光投线仪内设有磁环，所述磁环与所述微型扫描镜片连接，当所述微型扫描镜片移动时，所述磁环通过电磁阻尼减缓所述微型扫描镜片的震动。
  3. 如权利要求1所述的激光投线仪，其特征在于，所述光检测模块及数据处理模块置于一嵌入式单元内。
  4. 如权利要求1所述的激光投线仪，其特征在于，所述激光投线仪还包括：激光调制模块，用于调制所述激光源模块的激光强度和发射时间。
  5. 如权利要求1所述的激光投线仪，其特征在于，所述激光投线仪还包括：通信模块，与一移动设备交互通信。
  6. 如权利要求1所述的激光投线仪，其特征在于，所述激光投线仪还包括：人机交互模块，所述人机交互模块包括有用户界面、显示器。
  7. 如权利要求1所述的激光投线仪，其特征在于，所述激光投线仪还包括：电源模块，所述电源模块由一次性电池包、可充电电池或外部稳 压电源之一提供。
PCT/CN2017/118386 2017-03-21 2017-12-25 一种激光投线仪 WO2018171277A1 (zh)

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CN109839103B (zh) * 2019-04-15 2023-06-27 湖南科技大学 用于建筑施工测量的可调型曲线投线仪及用法
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