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CN106448121A - Wireless sensor - Google Patents

Wireless sensor
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CN106448121A
CN106448121ACN201611141340.1ACN201611141340ACN106448121ACN 106448121 ACN106448121 ACN 106448121ACN 201611141340 ACN201611141340 ACN 201611141340ACN 106448121 ACN106448121 ACN 106448121A
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module
data
data acquisition
power
data processing
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孙海波
洪洁
李心鹏
安华
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Beijing Institute of Structure and Environment Engineering
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Beijing Institute of Structure and Environment Engineering
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Abstract

Translated fromChinese

本发明涉及传感器技术领域,尤其涉及一种无线传感器,包括自下而上依次叠放设置的数据采集模块、数据处理模块、射频模块和电源模块,数据处理模块分别与数据采集模块和射频模块连接,以接收数据采集模块获得的数据并将数据存储,同时通过射频模块发送至无线基站,电源模块分别与数据采集模块、数据处理模块和射频模块连接并供电。本发明无线传感器将数据采集模块、数据处理模块、射频模块和电源模块采用自下而上的方式安装在传感器底板上,通过这种安装方式可以极大地减小传感器的体积。本发明不需要电缆,具有体积小、重量轻、功耗低、存储容量大、工作时间长等特点,具有广阔的应用前景和良好的经济效益。

The present invention relates to the technical field of sensors, in particular to a wireless sensor, comprising a data acquisition module, a data processing module, a radio frequency module and a power supply module stacked sequentially from bottom to top, and the data processing module is respectively connected to the data acquisition module and the radio frequency module , to receive the data obtained by the data acquisition module and store the data, and at the same time send it to the wireless base station through the radio frequency module, and the power supply module is respectively connected with the data acquisition module, the data processing module and the radio frequency module to supply power. The wireless sensor of the present invention installs the data acquisition module, the data processing module, the radio frequency module and the power supply module on the sensor bottom plate in a bottom-up manner, and the volume of the sensor can be greatly reduced through this installation method. The invention does not need cables, has the characteristics of small size, light weight, low power consumption, large storage capacity, long working time, etc., and has broad application prospects and good economic benefits.

Description

Translated fromChinese
一种无线传感器a wireless sensor

技术领域technical field

本发明涉及传感器技术领域,尤其涉及一种无线传感器。The invention relates to the technical field of sensors, in particular to a wireless sensor.

背景技术Background technique

与传统的传感器相比,无线传感器不需要电缆,具有灵活、低功耗、低成本、自组网等特点,在实际中应用越来越广泛。在一些结构件的模态试验以及一些旋转结构试验中,急需使用无线传感器,可以极大地提高试验效率。现有的无线传感器体积和重量均较大,在某些试验件上安装这些无线传感器,可能会影响试验件自身的力学特性。另外,传统传感器体积较大,内部可以安装较大容量电池,减小传感器体积之后,必然影响内部电池体积,从而影响到电池的功耗。Compared with traditional sensors, wireless sensors do not require cables, and have the characteristics of flexibility, low power consumption, low cost, and ad hoc networks, and are more and more widely used in practice. In the modal tests of some structural parts and some rotating structure tests, it is urgent to use wireless sensors, which can greatly improve the test efficiency. Existing wireless sensors are large in size and weight, and installing these wireless sensors on some test pieces may affect the mechanical properties of the test piece itself. In addition, the traditional sensor has a large volume, and a large-capacity battery can be installed inside. After reducing the volume of the sensor, it will inevitably affect the internal battery volume, thereby affecting the power consumption of the battery.

发明内容Contents of the invention

(一)要解决的技术问题(1) Technical problems to be solved

本发明要解决的技术问题是解决现有无线传感器存在体积大,影响试验件自身的力学特性的问题。The technical problem to be solved by the invention is to solve the problem that the existing wireless sensor has a large volume and affects the mechanical properties of the test piece itself.

(二)技术方案(2) Technical solution

为了解决上述技术问题,本发明提供了一种无线传感器,包括自下而上依次叠放设置的数据采集模块、数据处理模块、射频模块和电源模块,所述数据处理模块分别与所述数据采集模块和所述射频模块连接,以接收所述数据采集模块获得的数据并将数据存储,同时通过所述射频模块发送至无线基站,所述电源模块分别与所述数据采集模块、所述数据处理模块和所述射频模块连接并供电。In order to solve the above-mentioned technical problems, the present invention provides a wireless sensor, including a data acquisition module, a data processing module, a radio frequency module and a power supply module stacked sequentially from bottom to top, and the data processing module is connected with the data acquisition module respectively. The module is connected with the radio frequency module to receive the data obtained by the data acquisition module and store the data, and at the same time send it to the wireless base station through the radio frequency module, and the power supply module is connected with the data acquisition module and the data processing module respectively. The module is connected with the radio frequency module and powered.

其中,所述数据采集模块包括一个三轴MEMS加速度传感器和三条采集通路,每条所述采集通路均包括依次连接的信号调理电路、滤波电路和AD采集芯片,每个所述信号调理电路均与所述三轴MEMS加速度传感器连接,各所述AD采集芯片以菊花链方式依次连接后再与所述数据处理模块连接。Wherein, the data acquisition module includes a three-axis MEMS acceleration sensor and three acquisition paths, each of the acquisition paths includes a signal conditioning circuit, a filter circuit and an AD acquisition chip connected in sequence, and each of the signal conditioning circuits is connected to The three-axis MEMS acceleration sensor is connected, and each of the AD acquisition chips is sequentially connected in a daisy chain manner and then connected to the data processing module.

其中,每个所述AD采集芯片上均设有SPI接口,所述AD采集芯片通过所述SPI接口进行菊花链方式连接。Wherein, each of the AD acquisition chips is provided with an SPI interface, and the AD acquisition chips are connected in a daisy chain through the SPI interface.

其中,所述AD采集芯片为16位低功耗AD芯片。Wherein, the AD acquisition chip is a 16-bit low-power AD chip.

其中,所述滤波电路为二阶有源低通滤波器。Wherein, the filter circuit is a second-order active low-pass filter.

其中,所述电源模块包括锂电池、充电电路、电源调理电路和控制电路组成,所述锂电池通过外部接口充电,所述锂电池通过所述电源调理电路将电源调理成数字电源和模拟电源。Wherein, the power module includes a lithium battery, a charging circuit, a power conditioning circuit and a control circuit. The lithium battery is charged through an external interface, and the lithium battery regulates the power supply into a digital power supply and an analog power supply through the power conditioning circuit.

其中,所述数据处理模块包括CPU和FLASH,所述CPU分别与所述数据采集模块、所述射频模块和所述FLASH连接。Wherein, the data processing module includes a CPU and a FLASH, and the CPU is respectively connected to the data acquisition module, the radio frequency module and the FLASH.

其中,所述射频模块工作在2.4GHz的ISM频段。Wherein, the radio frequency module works in the 2.4GHz ISM frequency band.

(三)有益效果(3) Beneficial effects

本发明的上述技术方案具有如下优点:本发明无线传感器将数据采集模块、数据处理模块、射频模块和电源模块采用自下而上的方式安装在传感器底板上,通过这种安装方式可以极大地减小传感器的体积。数据处理模块将数据采集模块采集的数据通过射频模块发送至无线基站,同时将数据存储,以防止在恶劣的电磁环境下无线数据丢包导致的数据丢失,实现数据双保险。本发明的模块化设计可以通过更换不同的数据采集模块实现不同的参数测量功能,更换射频模块实现其他频段的无线数据收发,具有非常大的灵活性。在非常小的体积内集成了数据存储、无线收发、充电供电等功能模块,达到了通用传感器要求的同时,也使传感器体积小巧、重量轻,适合模态试验等对体积重量敏感的应用场合。与现有加速度传感器相比,本发明不需要电缆,具有体积小、重量轻、功耗低、存储容量大、工作时间长等特点,可应用于模态试验、加速度测量、桥梁状态监测、风电叶片监测等领域,具有广阔的应用前景和良好的经济效益。The technical solution of the present invention has the following advantages: the wireless sensor of the present invention installs the data acquisition module, the data processing module, the radio frequency module and the power supply module on the sensor base plate in a bottom-up manner, which can greatly reduce the Small sensor size. The data processing module sends the data collected by the data acquisition module to the wireless base station through the radio frequency module, and stores the data at the same time, so as to prevent data loss caused by wireless data packet loss in harsh electromagnetic environments, and realize double data insurance. The modular design of the present invention can realize different parameter measurement functions by replacing different data acquisition modules, and realize wireless data transmission and reception in other frequency bands by replacing radio frequency modules, which has great flexibility. In a very small volume, functional modules such as data storage, wireless transceiver, charging and power supply are integrated, which meets the requirements of general sensors and also makes the sensor small in size and light in weight, suitable for applications that are sensitive to volume and weight such as modal tests. Compared with the existing acceleration sensor, the present invention does not require cables, has the characteristics of small size, light weight, low power consumption, large storage capacity, long working time, etc., and can be applied to modal tests, acceleration measurements, bridge status monitoring, wind power Blade monitoring and other fields have broad application prospects and good economic benefits.

除了上面所描述的本发明解决的技术问题、构成的技术方案的技术特征以及有这些技术方案的技术特征所带来的优点之外,本发明的其他技术特征及这些技术特征带来的优点,将结合附图作出进一步说明。In addition to the above-described technical problems solved by the present invention, the technical features of the formed technical solutions and the advantages brought by the technical features of these technical solutions, other technical features of the present invention and the advantages brought by these technical features, Further description will be made in conjunction with the accompanying drawings.

附图说明Description of drawings

图1是本发明实施例无线传感器的结构示意图;Fig. 1 is a schematic structural diagram of a wireless sensor according to an embodiment of the present invention;

图2是本发明实施例无线传感器的数据处理模块的工作原理图;2 is a working principle diagram of a data processing module of a wireless sensor according to an embodiment of the present invention;

图3是本发明实施例无线传感器的数据采集模块的构成示意图;3 is a schematic diagram of the composition of a data acquisition module of a wireless sensor according to an embodiment of the present invention;

图4是本发明实施例无线传感器的电源模块的构成示意图。Fig. 4 is a schematic diagram of a power supply module of a wireless sensor according to an embodiment of the present invention.

图中:1:数据采集模块;2:数据处理模块;3:射频模块;4:电源模块;11:三轴MEMS加速度传感器;12:信号调理电路;13:滤波电路;14:AD采集芯片;21:CPU;22:FLASH;41:锂电池;42:充电电路;43:电源调理电路;44:控制电路;45:外部接口。In the figure: 1: data acquisition module; 2: data processing module; 3: radio frequency module; 4: power supply module; 11: three-axis MEMS acceleration sensor; 12: signal conditioning circuit; 13: filter circuit; 14: AD acquisition chip; 21: CPU; 22: FLASH; 41: lithium battery; 42: charging circuit; 43: power conditioning circuit; 44: control circuit; 45: external interface.

具体实施方式detailed description

为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明的一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例,都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

此外,在本发明的描述中,除非另有说明,“多个”、“多根”、“多组”的含义是两个或两个以上,“若干个”、“若干根”、“若干组”的含义是一个或一个以上。In addition, in the description of the present invention, unless otherwise specified, the meanings of "multiple", "multiple roots" and "multiple groups" are two or more, "several", "several roots", "several "Group" means one or more than one.

如图1和图2所示,本发明实施例提供的无线传感器,包括自下而上依次叠放设置的数据采集模块1、数据处理模块2、射频模块3和电源模块4,数据处理模块2分别与数据采集模块1和射频模块3连接,以接收数据采集模块1获得的数据并将数据存储,同时通过射频模块3发送至无线基站,电源模块4分别与数据采集模块1、数据处理模块2和射频模块3连接并供电。As shown in Figure 1 and Figure 2, the wireless sensor provided by the embodiment of the present invention includes a data acquisition module 1, a data processing module 2, a radio frequency module 3 and a power supply module 4 arranged sequentially from bottom to top, and the data processing module 2 Connect with the data acquisition module 1 and the radio frequency module 3 respectively, to receive the data obtained by the data acquisition module 1 and store the data, and send it to the wireless base station through the radio frequency module 3 at the same time, the power supply module 4 is connected with the data acquisition module 1 and the data processing module 2 respectively Connect with RF module 3 and supply power.

本发明无线传感器将数据采集模块、数据处理模块、射频模块和电源模块采用自下而上的方式安装在传感器底板上,通过这种安装方式可以极大地减小传感器的体积。数据处理模块将数据采集模块采集的数据通过射频模块发送至无线基站,同时将数据存储,以防止在恶劣的电磁环境下无线数据丢包导致的数据丢失,实现数据双保险。本发明的模块化设计可以通过更换不同的数据采集模块实现不同的参数测量功能,更换射频模块实现其他频段的无线数据收发,具有非常大的灵活性。在非常小的体积内集成了数据存储、无线收发、充电供电等功能模块,达到了通用传感器要求的同时,也使传感器体积小巧、重量轻,适合模态试验等对体积重量敏感的应用场合。与现有加速度传感器相比,本发明不需要电缆,具有体积小、重量轻、功耗低、存储容量大、工作时间长等特点,可应用于模态试验、加速度测量、桥梁状态监测、风电叶片监测等领域,具有广阔的应用前景和良好的经济效益。The wireless sensor of the present invention installs the data acquisition module, the data processing module, the radio frequency module and the power supply module on the sensor bottom plate in a bottom-up manner, and the volume of the sensor can be greatly reduced through this installation method. The data processing module sends the data collected by the data acquisition module to the wireless base station through the radio frequency module, and stores the data at the same time, so as to prevent data loss caused by wireless data packet loss in harsh electromagnetic environments, and realize double data insurance. The modular design of the present invention can realize different parameter measurement functions by replacing different data acquisition modules, and realize wireless data transmission and reception in other frequency bands by replacing radio frequency modules, which has great flexibility. In a very small volume, functional modules such as data storage, wireless transceiver, charging and power supply are integrated, which meets the requirements of general sensors and also makes the sensor small in size and light in weight, suitable for applications that are sensitive to volume and weight, such as modal tests. Compared with the existing acceleration sensor, the present invention does not require cables, and has the characteristics of small size, light weight, low power consumption, large storage capacity, long working time, etc., and can be applied to modal tests, acceleration measurements, bridge status monitoring, wind power Blade monitoring and other fields have broad application prospects and good economic benefits.

其中,如图3所示,数据采集模块1包括一个三轴MEMS(微机电系统)加速度传感器11和三条采集通路,每条采集通路均包括依次连接的信号调理电路12、滤波电路13和AD采集芯片14,每个信号调理电路12均与三轴MEMS加速度传感器11连接,各AD采集芯片14以菊花链方式依次连接后再与数据处理模块2连接。其中,每个AD采集芯片14上均设有SPI(串行外设接口)接口,AD采集芯片14通过SPI接口进行菊花链方式连接。三轴MEMS加速度传感器X轴、Y轴和Z轴的三通道数据分别进行独立信号调理和AD采集,采用模拟信号输出三轴MEMS加速度传感器,三轴加速度信号同步进行滤波与AD采集,每一路信号首先进行信号调理,将三轴MEMS加速度传感器输出的信号调理成0V-2.5V电压信号,使其满足AD采集芯片的输入范围。采用SPI接口的AD采集芯片,三个AD采集芯片通过菊花链方式连接,以减少IO管脚,最终通过其中一个AD采集芯片的SPI接口输出与数据处理模块连接,数据采集模块还可采用三个单轴MEMS加速度传感器分别连接三个采集通路。Wherein, as shown in Figure 3, the data acquisition module 1 includes a three-axis MEMS (micro-electromechanical system) acceleration sensor 11 and three acquisition paths, and each acquisition path includes a signal conditioning circuit 12, a filter circuit 13 and an AD acquisition circuit connected in sequence. The chips 14 and each signal conditioning circuit 12 are connected to the three-axis MEMS acceleration sensor 11 , and the AD acquisition chips 14 are sequentially connected in a daisy chain manner and then connected to the data processing module 2 . Wherein, each AD acquisition chip 14 is provided with an SPI (Serial Peripheral Interface) interface, and the AD acquisition chips 14 are connected in a daisy-chain manner through the SPI interface. The three-channel data of the X-axis, Y-axis and Z-axis of the three-axis MEMS acceleration sensor are independently signal-conditioned and AD collected, and the analog signal is used to output the three-axis MEMS acceleration sensor, and the three-axis acceleration signal is synchronously filtered and AD collected. Firstly, the signal conditioning is carried out, and the signal output by the three-axis MEMS acceleration sensor is adjusted into a 0V-2.5V voltage signal to meet the input range of the AD acquisition chip. The AD acquisition chip with SPI interface, the three AD acquisition chips are connected in a daisy chain to reduce the IO pins, and finally the SPI interface output of one of the AD acquisition chips is connected to the data processing module, and the data acquisition module can also use three The single-axis MEMS acceleration sensor is connected to three acquisition paths respectively.

其中,AD采集芯片14为16位低功耗AD芯片。其中,滤波电路13为二阶有源低通滤波器。AD采集芯片采用SPI接口的16位低功耗AD芯片,AD采集位数为16位,与数字式MEMS传感器相比,保证了采样的准确性与数据同步性,精度更高、可靠性更高。滤波电路采用二阶有源低通滤波器,滤波频率根据实际需要设置。Wherein, the AD acquisition chip 14 is a 16-bit low power consumption AD chip. Wherein, the filter circuit 13 is a second-order active low-pass filter. The AD acquisition chip adopts a 16-bit low-power AD chip with an SPI interface. The number of AD acquisition bits is 16 bits. Compared with digital MEMS sensors, it ensures the accuracy of sampling and data synchronization, with higher precision and higher reliability. . The filter circuit uses a second-order active low-pass filter, and the filter frequency is set according to actual needs.

其中,如图4所示,电源模块4包括锂电池41、充电电路42、电源调理电路43和控制电路44组成,锂电池41通过外部接口45充电,锂电池41通过电源调理电路43将电源调理成数字电源和模拟电源。电源模块由锂电池、充电电路、电源调理电路以及低功耗控制电路组成,可通过外部接口为锂电池充电,通过电源调理电路将锂电池电源调理成数字电源和模拟电源,分别为数据采集模块、数据处理模块和射频模块供电。本实施例采用3.7V锂电池供电,使用专用充电芯片通过外部充电接口进行充电,并采用电池管理芯片将3.7V稳压成3.0V电源为系统供电。在休眠模式下,电源模块仅仅为数据处理模块的CPU供电,其它设备均处于关闭状态,可以极大降低系统的功耗。Wherein, as shown in Figure 4, the power module 4 comprises a lithium battery 41, a charging circuit 42, a power conditioning circuit 43 and a control circuit 44. into digital power and analog power. The power module is composed of a lithium battery, a charging circuit, a power conditioning circuit and a low-power control circuit. It can charge the lithium battery through an external interface, and adjust the power of the lithium battery into a digital power supply and an analog power supply through the power conditioning circuit. They are data acquisition modules respectively. , data processing module and radio frequency module power supply. In this embodiment, a 3.7V lithium battery is used for power supply, and a dedicated charging chip is used for charging through an external charging interface, and a battery management chip is used to stabilize the voltage of 3.7V into a 3.0V power supply for the system. In sleep mode, the power module only supplies power to the CPU of the data processing module, and other devices are turned off, which can greatly reduce the power consumption of the system.

其中,如图2所示,数据处理模块2包括CPU21和FLASH22,CPU21分别与数据采集模块1、射频模块3和FLASH22连接。数据处理模块的核心器件为超低功耗CPU,CPU读取SPI接口的三通道AD采集数据,并将其按照指定的数据帧格式通过射频模块发送至远程无线基站,同时将数据存储至大容量FLASH中,以防止在恶劣的电磁环境下无线数据丢包导致的数据丢失,实现数据“双保险”,这种双备份的方式保证了数据的可靠性,采用大容量FLASH存储芯片,在无线传输的同时,传感器节点可以实时存储数据,保证了数据的可靠性。由此配合数据采集模块实现了三轴加速度信号的调理、采集、存储以及无线发射。采用超低功耗CPU,功耗很低,并且能够以微安级的功耗进入休眠状态,延长了传感器的工作时间和待机时间。Wherein, as shown in FIG. 2 , the data processing module 2 includes a CPU 21 and a FLASH 22 , and the CPU 21 is connected to the data acquisition module 1 , the radio frequency module 3 and the FLASH 22 respectively. The core device of the data processing module is an ultra-low power consumption CPU. The CPU reads the three-channel AD acquisition data of the SPI interface, and sends it to the remote wireless base station through the RF module according to the specified data frame format, and stores the data in a large-capacity In FLASH, in order to prevent data loss caused by wireless data packet loss in harsh electromagnetic environments, data "double insurance" is realized. This double backup method ensures data reliability. Large-capacity FLASH memory chips are used for wireless transmission. At the same time, the sensor nodes can store data in real time, ensuring the reliability of the data. Therefore, with the data acquisition module, the conditioning, acquisition, storage and wireless transmission of the three-axis acceleration signal are realized. Using ultra-low power consumption CPU, the power consumption is very low, and it can enter the sleep state with the power consumption of microampere level, which prolongs the working time and standby time of the sensor.

其中,射频模块3工作在2.4GHz的ISM频段。优选的,射频模块工作在2.4GHz的ISM频段,该频段为全球免费的无线通信频段,可以降低设计和使用成本。Wherein, the radio frequency module 3 works in the 2.4GHz ISM frequency band. Preferably, the radio frequency module works in the 2.4GHz ISM frequency band, which is a free wireless communication frequency band in the world, which can reduce design and use costs.

使用时,本发明因为实现无线传感器的模块化,所以通过简单更换数据采集模块的类型,可以实现其它物理参数的测量,如温度、压力、应变等,无需大幅更改设计,也可以通过更换射频模块,实现其它频段的无线数据收发功能。本模块化设计权利不仅限于无线加速度传感器,也包含应变、电压、电流、温度、电荷、压力、角速率等其它无线测量的领域。通过选用低功耗的电子元器件和低功耗控制策略,系统的工作电流很低,并且休眠电流达到了微安级,可以延长无线传感器的续航时间,采用时间同步算法,采样同步精度达到微秒级。When in use, because the present invention realizes the modularization of the wireless sensor, the measurement of other physical parameters, such as temperature, pressure, strain, etc., can be realized by simply changing the type of the data acquisition module, without greatly changing the design, and it can also be achieved by replacing the radio frequency module , to achieve wireless data transmission and reception functions in other frequency bands. This modular design right is not limited to wireless acceleration sensors, but also includes strain, voltage, current, temperature, charge, pressure, angular rate and other wireless measurement fields. By selecting low-power electronic components and low-power control strategies, the operating current of the system is very low, and the sleep current reaches the microampere level, which can prolong the battery life of wireless sensors. Using time synchronization algorithm, the sampling synchronization accuracy reaches micro second level.

综上所述,本发明无线传感器将数据采集模块、数据处理模块、射频模块和电源模块采用自下而上的方式安装在传感器底板上,通过这种安装方式可以极大地减小传感器的体积。数据处理模块将数据采集模块采集的数据通过射频模块发送至无线基站,同时将数据存储,以防止在恶劣的电磁环境下无线数据丢包导致的数据丢失,实现数据双保险。本发明的模块化设计可以通过更换不同的数据采集模块实现不同的参数测量功能,更换射频模块实现其他频段的无线数据收发,具有非常大的灵活性。在非常小的体积内集成了数据存储、无线收发、充电供电等功能模块,达到了通用传感器要求的同时,也使传感器体积小巧、重量轻,适合模态试验等对体积重量敏感的应用场合。与现有加速度传感器相比,本发明不需要电缆,具有体积小、重量轻、功耗低、存储容量大、工作时间长等特点,可应用于模态试验、加速度测量、桥梁状态监测、风电叶片监测等领域,具有广阔的应用前景和良好的经济效益。To sum up, the wireless sensor of the present invention installs the data acquisition module, data processing module, radio frequency module and power supply module on the sensor base plate in a bottom-up manner, which can greatly reduce the volume of the sensor. The data processing module sends the data collected by the data acquisition module to the wireless base station through the radio frequency module, and stores the data at the same time, so as to prevent data loss caused by wireless data packet loss in harsh electromagnetic environments, and realize double data insurance. The modular design of the present invention can realize different parameter measurement functions by replacing different data acquisition modules, and realize wireless data transmission and reception in other frequency bands by replacing radio frequency modules, which has great flexibility. In a very small volume, functional modules such as data storage, wireless transceiver, charging and power supply are integrated, which meets the requirements of general sensors and also makes the sensor small in size and light in weight, suitable for applications that are sensitive to volume and weight such as modal tests. Compared with the existing acceleration sensor, the present invention does not require cables, has the characteristics of small size, light weight, low power consumption, large storage capacity, long working time, etc., and can be applied to modal tests, acceleration measurements, bridge status monitoring, wind power Blade monitoring and other fields have broad application prospects and good economic benefits.

最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

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