WO2014114226A1 - Apparatus for monitoring deformation of large building and monitoring method thereby - Google Patents

Apparatus for monitoring deformation of large building and monitoring method thereby Download PDF

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Publication number
WO2014114226A1
WO2014114226A1 PCT/CN2014/071035 CN2014071035W WO2014114226A1 WO 2014114226 A1 WO2014114226 A1 WO 2014114226A1 CN 2014071035 W CN2014071035 W CN 2014071035W WO 2014114226 A1 WO2014114226 A1 WO 2014114226A1
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laser
deformation
monitoring
target
measured
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PCT/CN2014/071035
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French (fr)
Chinese (zh)
Inventor
赵晨光
魏丽
幺琳
雷振山
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唐山学院
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Priority to CN201310030241.6A priority Critical patent/CN103105140B/en
Priority to CN201310030241.6 priority
Application filed by 唐山学院 filed Critical 唐山学院
Publication of WO2014114226A1 publication Critical patent/WO2014114226A1/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/16Measuring arrangements characterised by the use of optical means for measuring the deformation in a solid, e.g. optical strain gauge
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical means
    • G01B11/26Measuring arrangements characterised by the use of optical means for measuring angles or tapers; for testing the alignment of axes

Abstract

An apparatus for monitoring the deformation of a large building, comprising a laser transmitter (13), a laser receiver (11), a microprocessor (9) and a wireless transmitter (8). The laser transmitter (13) is composed of a laser controller (3), a laser power supply (2) and a laser collimator (1), wherein the laser controller (3) is connected to the laser power supply (2), and the laser power supply (2) is connected to the laser collimator (1). The laser receiver (11) is composed of a semitransparent laser target (4), a light shield (5), an image sensor (6) and an attitude sensor (7), wherein the semitransparent laser target (4) is connected to the light shield (5), and the light shield (5) is connected to the image sensor (6). The image sensor (6), the attitude sensor (7) and the wireless transmitter (8) are respectively connected to the microprocessor (9) to constitute the apparatus for monitoring the deformation of the large building. Also disclosed is a monitoring method using the apparatus. The laser transmitter (13) is mounted on a relatively fixed reference point which is close to an object to be detected, and the laser receiver (11) is mounted on a point to be detected of a deformation plane; and the linear displacement of the laser receiver (11) in the direction perpendicular to the deformation plane is a deformation value of the point. The apparatus adopts a laser to perform a deformation test, is convenient for mounting and test, is highly accurate, and is suitable for long-time online monitoring the deformation of a large building.

Description

大型建筑物变形监测装置以及用其监测的方法  Large-scale building deformation monitoring device and method for monitoring same

技术领域 Technical field

本发明涉及一种建筑物变形监测装置及监测方法, 特别是涉及一种 大型建筑物实时在线进行变形监测的大型建筑物变形监测装置以及用其 监测的方法。  The invention relates to a building deformation monitoring device and a monitoring method, in particular to a large-scale building deformation monitoring device for real-time online deformation monitoring of a large building and a monitoring method thereof.

背景技术 Background technique

对房屋、 桥梁、 堤坝等大型建筑物进行性能检测时通常需要测定其 重要部位的形状变化; 这些建筑物使用过程中由于自然条件变化和负载 超过限制等原因也会造成变形, 变形超过一定限度将造成破坏。 因此大 型建筑物的变形监测对于保证其安全使用非常重要。 目前监测变形主要 是使用位移传感器的方法和通过测量应变计算变形的间接测量方法。 使 用位移传感器通过测量建筑物一些重要部位相对某一基准的位置变化了 解整个物体的变形; 这种方法的存在问题是位移传感器必须安装在某一 垂直于被测对象变形面且与被测对象比较接近的基准位置上, 建立这个 基准位置需要消耗大量人力物力, 一般还不能长期保留; 有时甚至根本 无法建立, 例如测量横跨河面的桥梁变形。 通过测量应变计算变形的间 接测量方法存在问题是计算中要应用力学理论中的一些假设, 但是实际 被测对象有时并不完全符合这些假设, 因而造成比较大的测量误差; 还 有时因为不了解被测对象的几何尺寸和材料性能而不能使用这种方法进 行变形测量。  When testing the performance of large buildings such as houses, bridges, dams, etc., it is usually necessary to determine the shape changes of important parts; these buildings will also be deformed due to changes in natural conditions and load exceeding the limit during use, and deformation will exceed a certain limit. Cause damage. Therefore, deformation monitoring of large buildings is very important to ensure their safe use. At present, monitoring deformation is mainly a method using a displacement sensor and an indirect measurement method for calculating deformation by measuring strain. The displacement sensor is used to measure the deformation of the whole object by measuring the position change of some important parts of the building relative to a certain reference; the problem of this method is that the displacement sensor must be installed on a plane perpendicular to the measured object and compared with the measured object. At the close reference position, the establishment of this reference position requires a lot of manpower and material resources, and generally cannot be retained for a long time; sometimes it is impossible to establish, for example, measuring the deformation of a bridge across the river. The indirect measurement method for calculating deformation by measuring strain has some problems in the calculation. Some assumptions in the mechanics theory should be applied in the calculation, but the actual measured object sometimes does not fully meet these assumptions, thus causing a relatively large measurement error; The geometry and material properties of the object are measured and this method cannot be used for deformation measurements.

发明内容 Summary of the invention

本发明的发明目的在于针对现有技术存在的位移传感器必须安装在 某一垂直于被测对象变形面且与被测对象比较接近的基准位置上, 建立 这个基准位置需要消耗大量人力物力, 一般还不能长期保留; 有时甚至 根本无法建立等问题, 一是提供一种以激光发射器、 激光接收器为主体 的大型建筑物变形监测装置, 二是提供一种用大型建筑物变形监测装置 进行监测大型建筑物变形的方法, 用该装置监测不需要在与被测对象变 形面垂直的基准点上建立测点, 能够直接测量被测对象的变形, 适合大 型建筑物性能检测, 也可以做长期安全监测的大型建筑物变形监测装置 以及用其监测的方法, 该方法克服了现有技术的诸多缺陷解决了现有技 术中存在的上述问题。 The object of the present invention is that the displacement sensor existing in the prior art must be mounted on a reference position perpendicular to the deformation surface of the object to be measured and relatively close to the object to be measured. It takes a lot of manpower and material resources to establish the reference position. Can not be retained for a long time; sometimes even impossible to establish such problems, one is to provide a laser transmitter, laser receiver as the main body The large-scale building deformation monitoring device, and the second is to provide a method for monitoring deformation of a large building by using a large-scale building deformation monitoring device, which is used to monitor the need to establish a measuring point on a reference point perpendicular to the deformed surface of the object to be measured. It can directly measure the deformation of the measured object, is suitable for large-scale building performance detection, and can also be used for long-term safety monitoring of large-scale building deformation monitoring devices and methods for monitoring the same. This method overcomes many defects of the prior art and solves the problem. There are the above problems in the technology.

实现上述目的采用以下技术方案 To achieve the above objectives, the following technical solutions are adopted.

一种大型建筑物变形监测装置, 该装置包含激光发射器、 激光接收 器、 微处理器、 无线发射器, 其特征在于, 所述的激光发射器由激光控 制器、 激光电源和激光准直器组成, 激光控制器与激光电源相连, 激光 电源与激光准直器相连; 所述的激光接收器由半透激光靶、 遮光罩、 图 像传感器、 姿态传感器组成, 该半透激光靶与遮光罩相连, 遮光罩与图 像传感器相连, 图像传感器、 姿态传感器、 无线发射  A large-scale building deformation monitoring device, comprising: a laser emitter, a laser receiver, a microprocessor, a wireless transmitter, wherein the laser emitter is composed of a laser controller, a laser power source and a laser collimator The laser controller is connected to the laser power source, and the laser power source is connected to the laser collimator; the laser receiver is composed of a semi-transparent laser target, a hood, an image sensor and an attitude sensor, and the semi-transparent laser target is connected to the hood , hood connected to image sensor, image sensor, attitude sensor, wireless transmission

器分别与微处理器相连组成大型建筑物变形监测装置。  The devices are respectively connected with a microprocessor to form a large building deformation monitoring device.

所述的激光控制器为 LC100型。  The laser controller is of the LC100 type.

所述的激光准直器为 70 - 200RV型。  The laser collimator is of the 70-200RV type.

所述的半透激光靶是厚度为 3mm磨砂玻璃。  The semi-transmissive laser target is a frosted glass having a thickness of 3 mm.

所述的图像传感器为 AXB-1330IR2W82T型。  The image sensor is of the AXB-1330IR2W82T type.

所述的姿态传感器为 ZX-VG320A型。  The attitude sensor is a ZX-VG320A type.

所述的无线发射器为 EICZCOM-10型。  The wireless transmitter is of the EICZCOM-10 type.

一种用上述大型建筑物变形监测装置监测大型建筑物变形的方法, 其特征在于, 所述的监测方法按下述步骤进行:  A method for monitoring deformation of a large building by using the large-scale building deformation monitoring device described above, wherein the monitoring method is performed as follows:

a将激光发射器安装在接近被测对象的一个相对固定的基准点上, 使其发射出一束与被测对象变形面平行的激光;  a mounting the laser emitter on a relatively fixed reference point close to the object to be measured, so that it emits a laser beam parallel to the deformation surface of the object to be measured;

b激光接收器安装在变形面的被测点上;  b The laser receiver is mounted on the measured point of the deformed surface;

c半透激光靶的靶面与被测变形面垂直, 在激光照射下半透激光靶上 产生一个光斑; c The target surface of the semi-transparent laser target is perpendicular to the measured deformation surface, and is semi-transparent on the laser target under laser irradiation Produce a spot;

d以确定测试开始前的光斑位置为基准位置, 激光接收器的角度为基 准角度;  d to determine the position of the spot before the start of the test as the reference position, and the angle of the laser receiver is the reference angle;

e 当被测变形面发生变形后, 激光接收器的位置和角度也随之变化, 光斑在半透激光靶上的线位移值乘以半透激光靶面倾角的余弦值, 即为 激光接收器在垂直于变形面方向的线位移, 该值是被测对象此点的变形 值。  e When the measured deformation surface is deformed, the position and angle of the laser receiver also change. The line displacement value of the spot on the semi-transparent laser target is multiplied by the cosine of the semi-transparent laser target inclination angle, which is the laser receiver. In the line displacement perpendicular to the direction of the deformed surface, this value is the deformation value of this point of the measured object.

釆用上述技术方案, 与现有技术相比, 本发明由于釆用激光进行变 形测试, 比使用位移传感器测试方法安装方便, 比使用应变测试方法可 靠性和精度高, 适合大型建筑物变形长期在线监测。 由于激光的直线性 好、 发散度小、 亮度高, 不易受环境干扰, 能够得到高精度的测量结 果。 釆用嵌入式计算技术进行数字图像处理能够快速计算被测对象变 形。 姿态传感器进行角度校正提高了测试精度。 测试结果釆用无线传输 使测试系统更加简洁。  上述With the above technical solution, compared with the prior art, the invention is more convenient to install and deform than the use of the displacement sensor test method, and is more reliable and accurate than the use of the strain test method, and is suitable for long-term deformation of large buildings. monitor. Since the laser has good linearity, small divergence, and high brightness, it is not susceptible to environmental interference, and high-accuracy measurement results can be obtained.数字 Digital image processing with embedded computing technology can quickly calculate the deformation of the measured object. The angle correction of the attitude sensor improves the test accuracy. The test results use wireless transmission to make the test system more concise.

附图说明 DRAWINGS

图 1是本发明激光发射器结构示意图。  1 is a schematic view showing the structure of a laser emitter of the present invention.

图 2是本发明激光接收器结构示意图。  2 is a schematic view showing the structure of a laser receiver of the present invention.

图 3 是本发明监测方法示意图, 本图是桥梁变形监测方法的示意 图。  Fig. 3 is a schematic view of the monitoring method of the present invention, and Fig. 3 is a schematic view of a monitoring method for bridge deformation.

图中, 激光准直器 1 , 激光电源 2, 激光控制器 3 , 半透激光靶 4, 遮光罩 5 , 图像传感器 6 , 图姿态传感器 7 , 无线发射器 8, 微处理器 9 , 被测对象变形面 10 , 激光接收器 11 , 激光 12 , 激光发射器 13 , 桥墩 14, 无线接收器 15。  In the figure, laser collimator 1, laser power supply 2, laser controller 3, transflective laser target 4, hood 5, image sensor 6, diagram attitude sensor 7, wireless transmitter 8, microprocessor 9, object under test The deformed surface 10, the laser receiver 11, the laser 12, the laser emitter 13, the pier 14, and the wireless receiver 15.

具体实施方式 detailed description

下面结合具体实施例对本发明做进一步的描述。 实施例 1 The present invention will be further described below in conjunction with specific embodiments. Example 1

一种大型建筑物变形监测装置, 该装置由激光准直器 1、 激光电源 2、 激光控制器 3、 半透激光靶 4、 遮光罩 5、 图像传感器 6、 姿态传感器 7、 微处理器 9、 无线发射器 8和无线接收器 15。  A large-scale building deformation monitoring device, which comprises a laser collimator 1, a laser power source 2, a laser controller 3, a transflective laser target 4, a hood 5, an image sensor 6, an attitude sensor 7, a microprocessor 9, Wireless transmitter 8 and wireless receiver 15.

见图 1 , 型号为 LC100 的激光控制器 1 的输入端与型号为 FCM635S5L 的激光电源 2 相连, 激光电源 2 的输出端与型号为 70 - 200RV的激光准直器 1相连, 组成激光发射器 13。  As shown in Figure 1, the input of laser controller 1 of model LC100 is connected to laser power supply 2 of model FCM635S5L, and the output of laser power supply 2 is connected with laser collimator 1 of type 70 - 200RV to form laser emitter 13 .

见图 2, 半透激光靶 4、 遮光罩 5、 图像传感器 6、 姿态传感器 7、 微 处理器 9和无线发射器 8组成激光接收器 11。 材质为 3mm厚度的磨砂玻 璃的半透激光靶 4与铝合金材质的遮光罩 5胶结相连, 遮光罩 5与型号 为 AXB-1330IR2W82T 的图像传感器 6 螺紋连接, 图像传感器 6 通过 RJ45 网络通信口与型号为 ARM2440 的微处理器 9 相连, 型号为 ZX- VG320A 的姿态传感器 7 通过串行通信口与微处理器 9 相连, 型号为 EICZCOM-10的无线发射器 8通过串行通信口与微处理器相连。  Referring to Fig. 2, the transflective laser target 4, the hood 5, the image sensor 6, the attitude sensor 7, the microprocessor 9 and the wireless transmitter 8 constitute a laser receiver 11. The semi-transparent laser target 4 of frosted glass with a thickness of 3 mm is bonded to the hood 5 of the aluminum alloy. The hood 5 is screwed to the image sensor 6 of the model AXB-1330IR2W82T, and the image sensor 6 is connected to the model via the RJ45 network. Connected to the microprocessor 9 of the ARM2440, the attitude sensor 7 of the model ZX-VG320A is connected to the microprocessor 9 via a serial communication port, and the wireless transmitter 8 of the type EICZCOM-10 is connected to the microprocessor via a serial communication port. .

本发明的激光准直器 1、 激光电源 2、 激光控制器 3、 半透激光靶 4、 遮光罩 5、 图像传感器 6、 姿态传感器 7、 微处理器 9、 无线发射器 8 和无线接收器 15均为市售产品。  The laser collimator 1, the laser power source 2, the laser controller 3, the transflective laser target 4, the hood 5, the image sensor 6, the attitude sensor 7, the microprocessor 9, the wireless transmitter 8, and the wireless receiver 15 of the present invention All are commercially available products.

本装置的工作原理:  The working principle of this device:

本装置进行变形测量时将激光发射器 13安装在测量基准点上, 利用 激光进行测量基准的延伸, 激光良好的直线性和稳定性可以保证测量的 精度和可靠性; 激光接收器 11安装在被测量对象上, 半透激光靶 4上光 斑位置的变化就反应了被测量点相对于测量基准的变形; 测量光斑位置 变化时釆集半透激光靶 4 的图像, 根据图像阈值分析结果进行图像分 割, 然后用一个圓图形对半透激光靶 4 的图像进行形状匹配, 确定激光 光斑图形圓心位置; 变形测量的结果需要用被测点垂直于测量基准面的 位移值表达, 但是被测对象的变形会使激光接收器 11 随之产生相对测量 基准面的倾斜, 因此釆用姿态传感器 7 测量此倾角, 将光斑位置变化量 乘以倾角余弦值得到最终测量结果。 实施例 2 When the device performs deformation measurement, the laser emitter 13 is mounted on the measurement reference point, and the extension of the measurement reference is performed by using the laser. The good linearity and stability of the laser can ensure the accuracy and reliability of the measurement; the laser receiver 11 is installed in the On the measuring object, the change of the position of the spot on the semi-transparent laser target 4 reflects the deformation of the measured point relative to the measurement reference; the image of the semi-transparent laser target 4 is collected when the position of the spot is changed, and the image is segmented according to the image threshold analysis result. Then, a circular pattern is used to shape the image of the semi-transparent laser target 4 to determine the center position of the laser spot pattern; the result of the deformation measurement needs to be expressed by the displacement value of the measured point perpendicular to the measurement reference surface, but the deformation of the measured object This causes the laser receiver 11 to be tilted relative to the measurement reference plane. Therefore, the inclination sensor 7 measures the inclination angle, and the spot position change amount is multiplied by the inclination cosine value to obtain the final measurement result. Example 2

用大型建筑物变形监测装置监测桥梁变性面的方法见图 3。  The method of monitoring the denatured surface of a bridge with a large building deformation monitoring device is shown in Fig. 3.

激光发射器 13安装在接近被测对象的一个相对固定的基准点上, 发 射出一束与被测对象变形面平行的激光 12。 激光接收器 11放置在桥面之 下与激光接发射器 13相对, 安装在变形面的被测点上, 半透激光靶 4的 靶面与被测变形面 10垂直, 在激光 3照射下半透激光靶 4上产生一个光 斑。 确定测试开始前的光斑位置为基准位置, 激光接收器 11 角度为基准 角度。 当被测变形面 10发生变形后, 激光接收器 11 的位置和角度也随 之变化。 光斑在半透激光靶 4上的线位移值乘以半透激光靶 4 面倾角的 余弦值, 即为激光接收器 11在垂直于变形面方向的线位移, 该值可确定 被测对象此点的变形。  The laser emitter 13 is mounted on a relatively fixed reference point close to the object to be measured, and emits a laser beam 12 parallel to the deformed surface of the object to be measured. The laser receiver 11 is placed under the bridge surface opposite to the laser emitter 13 and mounted on the measured point of the deformed surface. The target surface of the semi-transparent laser target 4 is perpendicular to the measured deformation surface 10, and the laser 3 is irradiated to the lower half. A spot is generated on the laser-transmissive target 4. It is determined that the spot position before the start of the test is the reference position, and the angle of the laser receiver 11 is the reference angle. When the measured deformation surface 10 is deformed, the position and angle of the laser receiver 11 also change. The line displacement value of the spot on the semi-transparent laser target 4 is multiplied by the cosine of the plane tilt angle of the semi-transparent laser target, that is, the line displacement of the laser receiver 11 in the direction perpendicular to the deformation plane, which can determine the object to be measured. The deformation.

本实施例将激光接发射器 13放置在桥墩 14上, 激光接收器 11放置 在桥面之下与激光接发射器 13相对, 激光电源 2在激光控制器 1的控制 下发射出一束与被测对象变形面平行的激光 12, 激光准直器 1使激光 12 汇聚在半透激光靶 4上。 图像传感器 6在半透激光靶 4背面感测激光束 形成的光斑, 遮光罩 5去除外界光线的干扰, 图像传感器 6釆集光斑的 图像信息, 微处理器 9 釆用图像处理技术解算出光斑位置, 根据姿态传 感器 7的信号确定激光接收器 11的倾角, 根据倾角修正光斑位置, 光斑 位置信息通过无线发射器 8发出。 无线接收器 15接收光斑位置信息, 根 据光斑位置变化即可确定被测对象的变形。  In this embodiment, the laser emitter 13 is placed on the pier 14, and the laser receiver 11 is placed under the bridge surface opposite to the laser emitter 13. The laser power source 2 emits a beam and is controlled under the control of the laser controller 1. The laser light 12 in which the deformed surfaces of the object are parallel is measured, and the laser collimator 1 converges the laser light 12 on the semi-transparent laser target 4. The image sensor 6 senses the spot formed by the laser beam on the back side of the semi-transparent laser target 4, the hood 5 removes the interference of external light, the image sensor 6 collects the image information of the spot, and the microprocessor 9 uses image processing technology to calculate the spot position. The inclination of the laser receiver 11 is determined based on the signal of the attitude sensor 7, and the spot position is corrected based on the inclination angle, and the spot position information is transmitted through the wireless transmitter 8. The wireless receiver 15 receives the spot position information, and determines the deformation of the measured object based on the change in the spot position.

Claims

权 利 要 求 书 Claim
1. 一种大型建筑物变形监测装置, 该装置包含激光发射器、 激光接 收器、 微处理器、 无线发射器, 其特征在于, 所述的激光发射器由激光 控制器、 激光电源和激光准直器组成, 激光控制器与激光电源相连, 激 光电源与激光准直器相连; 所述的激光接收器由半透激光靶、 遮光罩、 图像传感器、 姿态传感器组成, 该半透激光靶与遮光罩相连, 遮光罩与 图像传感器相连, 图像传感器、 姿态传感器、 无线发射器分别与微处理 器相连组成大型建筑物变形监测装置。 A large-scale building deformation monitoring device, comprising: a laser emitter, a laser receiver, a microprocessor, and a wireless transmitter, wherein the laser emitter is composed of a laser controller, a laser power source, and a laser The laser controller is connected to the laser power source, and the laser power source is connected to the laser collimator; the laser receiver is composed of a semi-transparent laser target, a hood, an image sensor and an attitude sensor, and the transflective laser target and the shading The cover is connected, the hood is connected to the image sensor, and the image sensor, the attitude sensor and the wireless transmitter are respectively connected with the microprocessor to form a large building deformation monitoring device.
2. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的激光控制器为 LC100型。  2. The large-scale building deformation monitoring device according to claim 1, wherein the laser controller is of the LC100 type.
3. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的激光准直器为 70 - 200RV型。  The large-scale building deformation monitoring device according to claim 1, wherein the laser collimator is of a 70-200RV type.
4. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的半透激光靶是厚度为 3mm磨砂玻璃。  The large-scale building deformation monitoring device according to claim 1, wherein the semi-transmissive laser target is a frosted glass having a thickness of 3 mm.
5. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的图像传感器为 AXB-1330IR2W82T型。  The large-scale building deformation monitoring device according to claim 1, wherein the image sensor is of the AXB-1330IR2W82T type.
6. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的姿态传感器为 ZX-VG320A型。  6. The large-scale building deformation monitoring device according to claim 1, wherein the attitude sensor is of the ZX-VG320A type.
7. 根据权利要求 1 所述的大型建筑物变形监测装置, 其特征在于, 所述的无线发射器为 EICZCOM-10型。  7. The large-scale building deformation monitoring device according to claim 1, wherein the wireless transmitter is of the EICZCOM-10 type.
8. 一种用权利要求 1所述装置监测大型建筑物变形的方法, 其特征在于, 所述的监测方法按下述步骤进行:  8. A method of monitoring deformation of a large building using the apparatus of claim 1 wherein said monitoring method is performed as follows:
a. 将激光发射器安装在接近被测对象的一个相对固定的基准点 上, 使其发射出一束与被测对象变形面平行的激光;  a. The laser emitter is mounted on a relatively fixed reference point close to the object to be measured, so that a laser beam parallel to the deformation surface of the object to be measured is emitted;
b. 激光接收器安装在变形面的被测点上; C. 半透激光靶的靶面与被测变形面垂直, 在激光照射下半透激 光靶上产生一个光斑; b. The laser receiver is mounted on the measured point of the deformed surface; C. The target surface of the semi-transparent laser target is perpendicular to the measured deformation surface, and a spot is generated on the semi-transparent laser target under laser irradiation;
d. 以确定测试开始前的光斑位置为基准位置, 激光接收器的角 度为基准角度;  d. to determine the position of the spot before the start of the test as the reference position, the angle of the laser receiver is the reference angle;
e. 当被测变形面发生变形后, 激光接收器的位置和角度也随之 变化, 光斑在半透激光靶上的线位移值乘以半透激光靶面倾角的余 弦值, 即为激光接收器在垂直于变形面方向的线位移, 该值是被测 对象此点的变形值。  e. When the measured deformation surface is deformed, the position and angle of the laser receiver also change. The line displacement value of the spot on the semi-transparent laser target is multiplied by the cosine of the semi-transparent laser target tilt angle, which is laser receiving. The displacement of the device in a direction perpendicular to the direction of the deformation surface, which is the deformation value of the point of the object to be measured.
PCT/CN2014/071035 2013-01-28 2014-01-21 Apparatus for monitoring deformation of large building and monitoring method thereby WO2014114226A1 (en)

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