CN115792184B - Wireless stress and displacement measurement system and method for similar material simulation experiments - Google Patents
Wireless stress and displacement measurement system and method for similar material simulation experiments Download PDFInfo
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Abstract
Description
技术领域Technical Field
本发明涉及采矿工程技术领域，具体涉及一种用于相似材料模拟实验的测量系统及方法。The invention relates to the technical field of mining engineering, and in particular to a measuring system and method for similar material simulation experiments.
背景技术Background technique
相似材料模拟实验是采用与模拟原型物理力学相似的材料，按照一定的相似常数缩制成实验模型进行相应研究的一种实验方法，该方法被广泛应用于矿山岩层运动等因尺寸所限而难以开展等比例实验的研究领域。在相似材料模拟实验中一般需要测量相似材料的应力、位移等物理量。对于应力测量，常用的土应力盒埋于相似材料之中，依靠与外部相连的信号线进行测量数据的传输，信号线的存在给实验带来了诸多不便，一方面是土应力盒的信号线对相似材料铺设带来了不便，另一方面是信号线在相似模型制作和拆卸过程中易被损坏，传感器的布设和回收工作也十分费时费力。Similar material simulation experiment is an experimental method that uses materials with similar physical mechanics to the simulation prototype and shrinks them into experimental models according to certain similar constants for corresponding research. This method is widely used in research fields such as mining rock movement, which are difficult to carry out proportional experiments due to size limitations. In similar material simulation experiments, it is generally necessary to measure physical quantities such as stress and displacement of similar materials. For stress measurement, the commonly used soil stress box is buried in similar materials and relies on signal lines connected to the outside to transmit measurement data. The existence of signal lines brings many inconveniences to the experiment. On the one hand, the signal line of the soil stress box brings inconvenience to the laying of similar materials. On the other hand, the signal line is easily damaged during the production and disassembly of similar models. The layout and recovery of sensors are also very time-consuming and laborious.
申请号201720199180.X公开了用于巷道支护与变形的相似模拟材料实验装置，包括相似材料模拟实验设备，液压加载装置，单片机数据采集终端及上位机；所述的相似材料模拟实验设备包括支架、两钢板及液压油缸；所述的支架上设有侧板和底板，侧板垂直于底板设置，钢板与底板相对设置，通过多个液压油缸安装在支架上，另一钢板与侧板相对设置，通过多个液压油缸安装在支架上；液压油缸分别与液压加载装置连接；支架上设有应力传感器，待测巷道上设有位移传感器，应力传感器和位移传感器分别与单片机数据采集终端相连。Application No. 201720199180.X discloses a similar simulation material experimental device for tunnel support and deformation, including similar material simulation experimental equipment, a hydraulic loading device, a single-chip microcomputer data acquisition terminal and a host computer; the similar material simulation experimental equipment includes a bracket, two steel plates and a hydraulic cylinder; the bracket is provided with a side plate and a bottom plate, the side plate is arranged perpendicular to the bottom plate, the steel plate and the bottom plate are arranged opposite to each other, and are installed on the bracket through multiple hydraulic cylinders, and another steel plate is arranged opposite to the side plate, and is installed on the bracket through multiple hydraulic cylinders; the hydraulic cylinders are respectively connected to the hydraulic loading device; a stress sensor is provided on the bracket, and a displacement sensor is provided on the tunnel to be tested, and the stress sensor and the displacement sensor are respectively connected to the single-chip microcomputer data acquisition terminal.
上述专利中通过应力传感器和位移传感器与单片机数据采集终端相连，来分别获得对应力和位移的监测。除了上述专利，目前有关相似材料模拟实验中应力和位移的监测，均是依靠有线的土应力盒测量应力值，再依靠全站仪或图像识别设备对其表面标志点进行测量以获得相似材料表面点的位移或应变，存在测量设备较多，操作复杂的问题，而且应力和位移分开测量，效率低。In the above patent, stress sensors and displacement sensors are connected to the single-chip data acquisition terminal to monitor stress and displacement respectively. In addition to the above patent, the current monitoring of stress and displacement in similar material simulation experiments relies on wired soil stress boxes to measure stress values, and then relies on total stations or image recognition equipment to measure surface marker points to obtain the displacement or strain of similar material surface points. There are many measuring devices and complex operations, and the stress and displacement are measured separately, which is inefficient.
发明内容Summary of the invention
本发明的目的之一在于提供一种用于相似材料模拟实验的无线应力和位移测量系统，其特点在于应力测量数据无线传输，并且通过无线应力传感器和信号接收器的相互配合，可同时实现相似材料的位移测量，不需再额外布置位移测量装置，简化了实验设备，也简化了相关的测量步骤。One of the purposes of the present invention is to provide a wireless stress and displacement measurement system for similar material simulation experiments, which is characterized in that stress measurement data is wirelessly transmitted, and through the mutual cooperation of wireless stress sensors and signal receivers, displacement measurement of similar materials can be achieved simultaneously, without the need for additional displacement measurement devices, thereby simplifying the experimental equipment and the related measurement steps.
为了实现上述目的，本发明采用了以下技术方案：In order to achieve the above object, the present invention adopts the following technical solutions:
一种用于相似材料模拟实验的无线应力和位移测量系统，其包括：A wireless stress and displacement measurement system for similar material simulation experiments, comprising:
无线应力传感器和信号接收器，所述的无线应力传感器布置在试验台上相似材料的预定位置；A wireless stress sensor and a signal receiver, wherein the wireless stress sensor is arranged at a predetermined position of similar materials on the test bench;
所述的无线应力传感器包括盒体和集成设置在盒体上的测量元件、应力信号产生器、高频信号发生器、信号调制器和天馈系统一；所述盒体的一部分或者整体作为测量元件，所述的测量元件用于感测应力值；所述的应力信号产生器用于对测量数据信号进行处理，并使其具备合适的信号强度；所述的高频信号发生器用于产生信号辐射所需的高频载波信号；所述的信号调制器用于实现测量数据信号对高频信号的调制，并附上一段带有传感器编号的编码；所述的天馈系统一用于将处理过的高频信号向外界辐射；The wireless stress sensor comprises a box body and a measuring element, a stress signal generator, a high-frequency signal generator, a signal modulator and an antenna system 1 integrated on the box body; a part or the whole of the box body is used as a measuring element, and the measuring element is used to sense the stress value; the stress signal generator is used to process the measurement data signal and make it have a suitable signal strength; the high-frequency signal generator is used to generate a high-frequency carrier signal required for signal radiation; the signal modulator is used to realize the modulation of the measurement data signal on the high-frequency signal, and attach a code with the sensor number; the antenna system 1 is used to radiate the processed high-frequency signal to the outside world;
所述的信号接收器至少设置有四个，其分别布置在相似材料边角处；There are at least four signal receivers, which are arranged at the corners of similar materials respectively;
所述的信号接收器包括信号解调器和天馈系统二，所述的天馈系统二用于接收无线应力传感器发出的信号；所述的信号解调器用于对天馈系统二传来的信号进行解调，获取传感器编号、应力信息以及接收到信号的时间。The signal receiver includes a signal demodulator and an antenna feed system 2, wherein the antenna feed system 2 is used to receive the signal sent by the wireless stress sensor; the signal demodulator is used to demodulate the signal transmitted by the antenna feed system 2 to obtain the sensor number, stress information and the time when the signal is received.
上述技术方案直接带来的有益技术效果为：The beneficial technical effects directly brought about by the above technical solution are:
通过布置在相似材料内的无线应力传感器，向外辐射搭载测量数据的电磁波，通过外部的信号接收器接收所测应力信息，多个信号接收器根据接收到传感器所发射信号的时间差异，从而确定传感器在相似模拟材料中的位置，通过无线应力传感器和信号接收器即可同时实现相似材料应力和位移的测量；简化了测量设备和测量准备工作，也为后期材料清理提供便利。Wireless stress sensors arranged in similar materials radiate electromagnetic waves carrying measurement data, and the measured stress information is received by external signal receivers. Multiple signal receivers determine the position of the sensor in similar simulated materials based on the time difference in receiving the signals emitted by the sensor. The stress and displacement of similar materials can be measured simultaneously through wireless stress sensors and signal receivers. This simplifies the measurement equipment and measurement preparation work, and also facilitates the subsequent material cleaning.
上述技术方案首次将无线应力传感器和信号接收器应用于相似材料模拟实验中，避免了多线路造成的操作繁琐等问题。The above technical solution applies wireless stress sensors and signal receivers to similar material simulation experiments for the first time, avoiding problems such as cumbersome operations caused by multiple lines.
本发明的另一目的在于提供一种用于相似材料模拟实验的无线应力和位移测量方法，包括以下步骤：Another object of the present invention is to provide a wireless stress and displacement measurement method for similar material simulation experiments, comprising the following steps:
a、安装如上述的一种用于相似材料模拟实验的无线应力和位移测量系统，待相似材料、无线应力传感器和信号接收器均布置完毕后，准确测绘信号接收器的相对位置，对无线应力传感器和信号接收器进行组网；a. Install a wireless stress and displacement measurement system for similar material simulation experiments as described above, and after similar materials, wireless stress sensors and signal receivers are arranged, accurately map the relative positions of the signal receivers and network the wireless stress sensors and signal receivers;
b、无线应力传感器的测量与实验同时开始，在对相似材料进行一系列开挖或加载实验操作过程中，无线应力传感器随相似材料一起运动并持续测量；无线应力传感器发出一段搭载应力测量数据和传感器编号的无线信号，该无线信号被不同位置的信号接收器先后接收，通过信号被接收到的时间差即可确定无线应力传感器的空间位置，即获得相似材料在实验过程中应力和位移值；b. The measurement of the wireless stress sensor starts at the same time as the experiment. During a series of excavation or loading experiments on similar materials, the wireless stress sensor moves with the similar materials and continuously measures. The wireless stress sensor sends a wireless signal carrying stress measurement data and sensor number. The wireless signal is received by signal receivers at different locations one after another. The spatial position of the wireless stress sensor can be determined by the time difference between the received signals, that is, the stress and displacement values of the similar materials during the experiment can be obtained.
c、实验完成后，对相似材料拆除、清理时，通过最后记录的无线应力传感器的位置，先对无线应力传感器进行定位、拆除和回收，然后进行相似材料的整体拆除和清理。c. After the experiment is completed, when similar materials are dismantled and cleaned, the wireless stress sensor is first located, dismantled and recovered according to the last recorded position of the wireless stress sensor, and then the similar materials are dismantled and cleaned as a whole.
进一步的，在测量过程中，无线应力传感器持续发出无线信号，该无线信号包括应力信息和传感器编号两部分。Furthermore, during the measurement process, the wireless stress sensor continuously sends out a wireless signal, and the wireless signal includes two parts: stress information and a sensor number.
进一步的，由于无线应力传感器和信号接收器相隔一定距离的相似材料，无线信号在相似材料中保持恒等的传播速度，那么无线应力传感器发射信号时间和信号接收器收到信号时间存在一定的延迟，对比多个信号接收器对同一无线应力传感器的接收信号时间延迟，可以获得不同传感器的接收时间差异。Furthermore, since the wireless stress sensor and the signal receiver are made of similar materials at a certain distance, the wireless signal maintains a constant propagation speed in similar materials. Therefore, there is a certain delay between the time the wireless stress sensor transmits the signal and the time the signal receiver receives the signal. By comparing the time delays of multiple signal receivers receiving signals for the same wireless stress sensor, the difference in receiving time of different sensors can be obtained.
进一步的，根据无线信号被多个信号接收器接收时间的差异和无线信号在相似材料中的传播速度，联立方程计算无线应力传感器和不同信号接收器间的距离，进而获得无线应力传感器相对于信号接收器的位置，结合已知信号接收器的位置坐标来确定无线应力传感器所在位置的空间坐标。Furthermore, based on the difference in the time when the wireless signal is received by multiple signal receivers and the propagation speed of the wireless signal in similar materials, the simultaneous equations are used to calculate the distance between the wireless stress sensor and different signal receivers, thereby obtaining the position of the wireless stress sensor relative to the signal receiver, and combining the known position coordinates of the signal receiver to determine the spatial coordinates of the location of the wireless stress sensor.
与现有技术相比，本发明带来了以下有益技术效果：Compared with the prior art, the present invention brings the following beneficial technical effects:
本发明提出的用于相似材料模拟实验的无线应力和位移测量系统，其主要应用于相似模拟实验过程中相似材料应力和位移的测量，通过发送无线信号的方式传递应力测量数据，并通过计算获得位移值，避免信号线对相似材料模型制作和应力测量的影响，方便了模型的拆除，增强了测量系统的普适性。The wireless stress and displacement measurement system for similar material simulation experiments proposed in the present invention is mainly used for measuring the stress and displacement of similar materials during similar simulation experiments. Stress measurement data is transmitted by sending wireless signals, and displacement values are obtained by calculation, thereby avoiding the influence of signal lines on similar material model making and stress measurement, facilitating the dismantling of the model, and enhancing the universality of the measurement system.
本发明提出的用于相似材料模拟实验的无线应力和位移测量方法，采用无线应力传感器和信号接收器可同时实现对应力和位移的监测，可提高实验效率。The wireless stress and displacement measurement method for similar material simulation experiments proposed in the present invention can monitor stress and displacement simultaneously by using a wireless stress sensor and a signal receiver, thereby improving the experimental efficiency.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
下面结合附图对本发明做进一步说明：The present invention will be further described below in conjunction with the accompanying drawings:
图1为本发明无线应力传感器的功能结构图；FIG1 is a functional structure diagram of a wireless stress sensor according to the present invention;
图2为本发明信号接收器的功能结构图；FIG2 is a functional structure diagram of a signal receiver according to the present invention;
图3为本发明无线应力传感器定位功能原理图；FIG3 is a schematic diagram showing the positioning function of the wireless stress sensor of the present invention;
图4为用于相似材料模拟实验的无线应力和位移测量系统图；FIG4 is a diagram of a wireless stress and displacement measurement system for similar material simulation experiments;
图中：In the figure:
1、无线应力传感器，2、信号接收器。1. Wireless stress sensor, 2. Signal receiver.
具体实施方式Detailed ways
本发明提出了一种用于相似材料模拟实验的无线应力和位移测量系统及方法，为了使本发明的优点、技术方案更加清楚、明确，下面结合具体实施例对本发明做进一步说明。The present invention proposes a wireless stress and displacement measurement system and method for similar material simulation experiments. In order to make the advantages and technical solutions of the present invention clearer and more specific, the present invention is further described below in conjunction with specific embodiments.
与本发明所涉及的相似材料模拟实验相配合的部件有相似材料模拟试验台及其附属装置。The components matched with the similar material simulation experiment involved in the present invention include a similar material simulation test bench and its auxiliary devices.
本发明的主要技术构思在于：(1)避免在相似材料模拟实验中使用有线传感器，简化实验装置，提高实验效率，(2)使用无线应力传感器和信号接收器同时实现对应力和位移的测量，相比现有的测量设备，集成两种测量功能于一套测量系统，进一步提高了实验效率。The main technical concepts of the present invention are: (1) avoiding the use of wired sensors in similar material simulation experiments, simplifying the experimental equipment, and improving experimental efficiency; (2) using wireless stress sensors and signal receivers to simultaneously measure stress and displacement. Compared with existing measurement equipment, the two measurement functions are integrated into one measurement system, further improving the experimental efficiency.
无线应力传感器布置在试验台上相似材料的预定位置，其结构如图1所示，无线应力传感器1包括盒体和集成设置在盒体上的测量元件、应力信号产生器、高频信号发生器、信号调制器和天馈系统一；盒体为无线应力传感器各组成结构的安装载体，盒体外壳的一部分或者整体作为测量元件，盒体的整体为规则形状的长方体或正方体，将测量元件、应力信号产生器、高频信号发生器、信号调制器和天馈系统一均设置在盒体内部。The wireless stress sensor is arranged at a predetermined position of similar materials on the test bench, and its structure is shown in Figure 1. The wireless stress sensor 1 includes a box body and a measuring element, a stress signal generator, a high-frequency signal generator, a signal modulator and an antenna feed system 1 integrated on the box body; the box body is an installation carrier for the various components of the wireless stress sensor, a part or the whole of the box body shell is used as the measuring element, and the whole box body is a regularly shaped rectangular parallelepiped or cube, and the measuring element, stress signal generator, high-frequency signal generator, signal modulator and antenna feed system 1 are all arranged inside the box body.
测量元件用于感测应力值；应力信号产生器用于对测量数据信号进行处理，并使其具备合适的信号强度；所述的高频信号发生器用于产生信号辐射所需的高频载波信号；所述的信号调制器用于实现测量数据信号对高频信号的调制，并附上一段带有传感器编号的编码；所述的天馈系统一用于将处理过的高频信号向外界辐射。The measuring element is used to sense the stress value; the stress signal generator is used to process the measurement data signal and make it have a suitable signal strength; the high-frequency signal generator is used to generate the high-frequency carrier signal required for signal radiation; the signal modulator is used to realize the modulation of the high-frequency signal by the measurement data signal and attach a code with the sensor number; the antenna feed system is used to radiate the processed high-frequency signal to the outside world.
信号接收器2至少设置四个，分别布置在相似材料的边角处，如图2所示；所述的信号接收器包括信号解调器和天馈系统二，所述的天馈系统二用于接收无线应力传感器发出的信号；所述的信号解调器用于对天馈系统二传来的信号进行解调，获取传感器编号、应力信息以及接收到信号的时间。整套测量系统具有多个信号接受器2，每个信号接收器的结构相同，多个传感器分别记录接收到同一传感器信号的时间，结合已知的信号接收器自身位置坐标，通过联立方程，就可以获得待测传感器的空间坐标值。其详细的定位原理如下：At least four signal receivers 2 are provided, which are arranged at the corners of similar materials, as shown in FIG2 ; the signal receiver includes a signal demodulator and an antenna feed system 2, and the antenna feed system 2 is used to receive the signal sent by the wireless stress sensor; the signal demodulator is used to demodulate the signal transmitted by the antenna feed system 2 to obtain the sensor number, stress information and the time when the signal is received. The whole measurement system has multiple signal receivers 2, each of which has the same structure. Multiple sensors respectively record the time when the same sensor signal is received. Combined with the known signal receiver's own position coordinates, the spatial coordinate value of the sensor to be measured can be obtained through simultaneous equations. The detailed positioning principle is as follows:
整套系统对无线应力传感器定位的工作过程为，无线应力传感器发出一段搭载应力测量数据和传感器编号的无线信号，该无线信号被多个信号接收器先后接收，通过无线信号被接收到的时间差异即可确定无线应力传感器的空间位置，为确保无线应力传感器定位的准确性，可增加信号接收器数量来提高测算精度。The working process of the whole system for positioning the wireless stress sensor is that the wireless stress sensor sends out a wireless signal carrying stress measurement data and sensor number. The wireless signal is received successively by multiple signal receivers. The spatial position of the wireless stress sensor can be determined by the time difference when the wireless signal is received. To ensure the accuracy of the positioning of the wireless stress sensor, the number of signal receivers can be increased to improve the measurement accuracy.
如图3所示，首先建立三维空间直角坐标系，建立坐标系需要至少四个信号接收器，下面以四个信号接收器为例，介绍无线应力传感器定位原理：对接收器编号为A、B、C、D，准确测量信号接收器在空间坐标系的位置，信号接收器A的坐标记为(xa，ya，za)，依次确定其余三个接收器的位置坐标。在测量过程，无线应力传感器持续发出无线信号，该信号包括应力信息、传感器编号两部分。传感器发出的无线电信号被不同位置的传感器接收，由于传感器与接收器的距离存在差异，因此接收器接收到信号的时间也有差异。根据这个时间差异，并结合已知点的位置就可确定传感器所在位置的空间坐标。As shown in Figure 3, first establish a three-dimensional rectangular coordinate system. Establishing the coordinate system requires at least four signal receivers. The following takes four signal receivers as an example to introduce the positioning principle of the wireless stress sensor: the receivers are numbered A, B, C, and D, and the positions of the signal receivers in the spatial coordinate system are accurately measured. The coordinates of signal receiver A are marked as (x a , y a , z a ), and the position coordinates of the other three receivers are determined in turn. During the measurement process, the wireless stress sensor continuously sends out wireless signals, which include stress information and sensor number. The radio signals sent by the sensor are received by sensors at different locations. Due to the difference in distance between the sensor and the receiver, the time when the receiver receives the signal is also different. Based on this time difference and combined with the position of the known point, the spatial coordinates of the sensor location can be determined.
I＝Is+Ii+It (1)I＝I s +I i +I t (1)
上式中，I为信号解调器解调的信息，Is为测量的应力信息，Ii为传感器编号，It为接收到信号的时间。In the above formula, I is the information demodulated by the signal demodulator, Is is the measured stress information, Ii is the sensor number, and It is the time when the signal is received.
式中：Rb-a为应力传感器与接收器B的距离减去与接收器A的距离；V为信号在介质中的传播速度；tb为接收器B收到信号的时间值；ta为接收器A收到信号的时间值；Rc-a为应力传感器与接收器C的距离减去与接收器A的距离；tc为接收器C收到信号的时间值；Rd-a为应力传感器与接收器D的距离减去与接收器A的距离；td为接收器D收到信号的时间值；Where: Rba is the distance between the stress sensor and receiver B minus the distance to receiver A; V is the propagation speed of the signal in the medium; tb is the time value when receiver B receives the signal; ta is the time value when receiver A receives the signal; Rca is the distance between the stress sensor and receiver C minus the distance to receiver A; tc is the time value when receiver C receives the signal; Rda is the distance between the stress sensor and receiver D minus the distance to receiver A; td is the time value when receiver D receives the signal;
式中：xi为被测传感器的空间x坐标值，yi为被测传感器的空间y坐标值，zi为被测传感器的空间z坐标值；xa为接收器A的空间x坐标值，ya为接收器A的空间y坐标值，za为接收器A的空间z坐标值；xb为接收器B的空间x坐标值，yb为接收器B的空间y坐标值，zc为接收器C的空间z坐标值；xd为接收器D的空间x坐标值，yd为接收器D的空间y坐标值，zd为接收器D的空间z坐标值；Ra为被测传感器与接收器A的距离。In the formula: xi is the spatial x-coordinate value of the sensor under test, yi is the spatial y-coordinate value of the sensor under test, and zi is the spatial z-coordinate value of the sensor under test; xa is the spatial x-coordinate value of receiver A, ya is the spatial y-coordinate value of receiver A, and za is the spatial z-coordinate value of receiver A; xb is the spatial x-coordinate value of receiver B, yb is the spatial y-coordinate value of receiver B, and zc is the spatial z-coordinate value of receiver C; xd is the spatial x-coordinate value of receiver D, yd is the spatial y-coordinate value of receiver D, and zd is the spatial z-coordinate value of receiver D; Ra is the distance between the sensor under test and receiver A.
被测无线应力传感器的位置依靠基于上述定位原理开发的定位系统自动计算确定。The position of the wireless stress sensor under test is automatically calculated and determined by a positioning system developed based on the above positioning principle.
通过对于应力传感器位置的持续测量，获得相似材料的测点位置变化，通过测点位置的变化可以进一步得到相似材料某段长度的应变值。By continuously measuring the position of the stress sensor, the change in the position of the measuring point of the similar material can be obtained, and the strain value of a certain length of the similar material can be further obtained through the change in the position of the measuring point.
考虑到无线应力传感器尺寸限制，难以集成精准时间装置，如有条件，可使无线应力传感器发射时间信息，信号接收器对比信号接收时间和信号发射时间也可确定无线应力传感器的位置。Considering the size limitation of wireless stress sensors, it is difficult to integrate precise time devices. If conditions permit, the wireless stress sensor can transmit time information, and the signal receiver can determine the location of the wireless stress sensor by comparing the signal reception time and the signal transmission time.
下面结合具体实施例对本发明做进一步说明：The present invention will be further described below in conjunction with specific embodiments:
实施例1：Embodiment 1:
结合实际案例，如图4所示，对本发明测量系统做进一步说明。In combination with an actual case, as shown in FIG4 , the measurement system of the present invention is further described.
首先制作相似材料，并在试验台上逐层铺设相似材料，在预定位置布置无线应力传感器和信号接收器，重复相似材料制作铺设和无线应力传感器的布置操作步骤，直至相似材料全部铺设完成。First, similar materials are prepared and laid out layer by layer on a test bench, wireless stress sensors and signal receivers are arranged at predetermined positions, and the steps of preparing and laying out similar materials and arranging wireless stress sensors are repeated until all similar materials are laid out.
准确测绘信号接收器的相对位置，对无线应力传感器和信号接收器进行组网，确保无线应力传感器的信号都能被所有信号接收器所接收。然后正常开始测量和试验，在此过程不需要进行应力传感器的操作。试验操作结束后，在相似材料的拆除过程，通过最后记录的应力传感器位置，对应力传感器进行定位拆除和回收，之后再进行相似材料整体的拆除清理。Accurately map the relative position of the signal receiver, network the wireless stress sensor and the signal receiver, and ensure that the signal of the wireless stress sensor can be received by all signal receivers. Then start the measurement and test normally, and no operation of the stress sensor is required during this process. After the test operation is completed, during the removal process of similar materials, the stress sensor is located, removed and recycled through the last recorded position of the stress sensor, and then the overall removal and cleaning of similar materials is carried out.
待试验完成后，根据测量数据，借助定位系统，重建三维空间坐标系，获得相似材料在实验过程中应力和位移值。After the test is completed, the three-dimensional space coordinate system is reconstructed according to the measurement data with the help of the positioning system to obtain the stress and displacement values of similar materials during the experiment.
本发明中所述及的“测量元件”、“应力信号产生器”、“高频信号发生器”、“信号调制器”和“天馈系统一”、“信号解调器”、“天馈系统二”的结构及使用原理，借鉴现有技术即可实现。The structures and usage principles of the "measuring element", "stress signal generator", "high-frequency signal generator", "signal modulator", "antenna feed system one", "signal demodulator" and "antenna feed system two" mentioned in the present invention can be realized by referring to the existing technology.
本发明中未述及的部分借鉴现有技术即可实现。Parts not described in the present invention can be implemented by referring to the existing technology.
需要说明的是：在本说明书的教导下本领域技术人员所做出的任何等同方式或明显变型方式均应在本发明的保护范围内。It should be noted that any equivalent or obvious variations made by those skilled in the art under the guidance of this specification should be within the protection scope of the present invention.
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