可定量檢測的天線傳感器的設(shè)計(jì)與應(yīng)用研究
發(fā)布時間：2019-04-18 12:39
【摘要】：天線傳感器因具有制作簡單,體型微小等優(yōu)點(diǎn)而被廣泛研究應(yīng)用于諸如生物傳感器,氣體傳感器,應(yīng)變傳感器等實(shí)例中。但目前關(guān)于天線傳感器的研究還存在以下問題:1、為獲得精準(zhǔn)詳細(xì)的檢測數(shù)據(jù),通常采用諸如網(wǎng)絡(luò)分析儀等專業(yè)設(shè)備進(jìn)行天線傳感器的檢測,這種檢測方式操作復(fù)雜、技術(shù)要求高,只適于學(xué)術(shù)研究;2、使用諸如RFID閱讀器、智能手機(jī)等輕便設(shè)備進(jìn)行檢測雖然操作簡單、方便迅速,但大多只能給出定性的檢測結(jié)果,在無線傳感網(wǎng)中的應(yīng)用有局限性。本論文在使用輕便設(shè)備進(jìn)行檢測的工作基礎(chǔ)上,研究可定量檢測的天線傳感器的設(shè)計(jì)與應(yīng)用。具體研究內(nèi)容如下:一、本論文首先設(shè)計(jì)了基于藍(lán)牙技術(shù)的主動式天線傳感器。在前人工作的基礎(chǔ)上,初步分析了藍(lán)牙信號的傳播模型,并提出使用全向性天線的方法解決因空間角度的不確定性而無法簡化模型的問題,進(jìn)一步優(yōu)化了傳播模型,實(shí)現(xiàn)了定量檢測待測參數(shù)的目標(biāo)。最終得到的定量檢測模型為:(,(9)=1)()-109)lg((9)。本論文據(jù)此制作了濕度傳感器和應(yīng)變傳感器兩種傳感器,并在實(shí)際演示實(shí)驗(yàn)中驗(yàn)證了定量檢測模型的可靠性。濕度傳感器使用鉛筆印跡作為敏感材料,定標(biāo)測試實(shí)驗(yàn)中得到的檢測函數(shù)為:=-38.54-14.507)2)((9)-30.42,誤差為±3.59 dBm。從實(shí)際的測試結(jié)果來看,實(shí)驗(yàn)誤差要小于理論誤差,同時在動態(tài)的環(huán)境濕度下,也能快速的檢測濕度的變化,有力的證明了定量檢測函數(shù)的可靠性;應(yīng)變傳感器使用S-RGO油墨作為敏感材料,其定標(biāo)測試實(shí)驗(yàn)中得到的檢測函數(shù)為:??????=-13.35-14.507)2)((9)-27.20,誤差為±2.93 dBm。應(yīng)變傳感器設(shè)計(jì)了四組演示實(shí)驗(yàn),演示實(shí)驗(yàn)的檢測結(jié)果正確反應(yīng)出了手指彎曲,人體呼吸等動作引起的應(yīng)力變化情況,并與檢測模型完全相符。二、針對被動式傳感器,本論文設(shè)計(jì)了雙RFID天線傳感器。兩個天線一個作為參考標(biāo)簽,一個用于感知檢測。本論文詳細(xì)分析了雙天線反饋信號強(qiáng)度的變化情況,并據(jù)此建立了反饋信號強(qiáng)度差值與待測參數(shù)關(guān)系的函數(shù)模型。雙天線的檢測位置相近是工作的前提,通過這種方式可以減小因天線位置差異造成的信號強(qiáng)度差別,最終實(shí)現(xiàn)RFID傳感器的定量檢測。該檢測模型為:=2)()。在檢測方案的實(shí)際應(yīng)用研究中,本論文設(shè)計(jì)了基于雙RFID天線結(jié)構(gòu)的濕度傳感器。濕度傳感器的檢測函數(shù)是:?=-5.94-2.22,誤差為±0.40 dBm。從演示實(shí)驗(yàn)測試結(jié)果來看,?均值的波動變化符合檢測模型的理論預(yù)期,能較好的檢測濕度變化�？傮w而言,本論文分別從主動式傳感器和被動式傳感器兩個方面入手,為天線傳感器的制作提供了兩種不同的可定量檢測方案。兩種定量檢測方案都具有良好的可靠性,并可以實(shí)際應(yīng)用在傳感器的研制中。論文中可定量檢測方案的實(shí)現(xiàn)不僅促進(jìn)了天線傳感器在實(shí)際生活中的應(yīng)用,同時也為學(xué)術(shù)研究中天線傳感器的信號模型簡化問題提供了新的思路。
[Abstract]:Antenna sensors have been widely used in many applications such as biosensors, gas sensors, strain sensors and so on because of their advantages such as simple fabrication, small size and so on. However, at present, there are still the following problems in the research of antenna sensor: 1. In order to obtain accurate and detailed detection data, professional equipment such as network analyzer is usually used to detect antenna sensor, and the operation of this detection mode is complex. High technical requirements, only suitable for academic research; 2. Using portable devices such as RFID reader, smart phone and other portable devices, although the operation is simple and convenient and quick, most of them can only give qualitative detection results, and the application in wireless sensor networks has its limitations. In this paper, the design and application of the antenna sensor which can be quantitatively detected are studied on the basis of the portable equipment. The main contents are as follows: firstly, the active antenna sensor based on Bluetooth technology is designed in this paper. On the basis of previous work, the propagation model of bluetooth signal is analyzed preliminarily, and the method of omnidirectional antenna is proposed to solve the problem that the model cannot be simplified because of the uncertainty of space angle, and the propagation model is further optimized. The objective of quantificationally detecting the parameters to be tested is achieved. The final quantitative detection model was: (, (9) = 1) ()-109) lg (9). In this paper, two kinds of sensors, humidity sensor and strain sensor, are made, and the reliability of the quantitative detection model is verified in the practical demonstration experiment. The humidity sensor uses pencil imprinting as sensitive material. The detection function obtained in calibration test is: =-38.54 脳 14.507) 2) (9)-30.42, and the error is 鹵3.59 dBm.. From the actual test results, the experimental error is smaller than the theoretical error. At the same time, under the dynamic environment humidity, it can also quickly detect the change of humidity, which effectively proves the reliability of the quantitative detection function. The strain sensor uses S-RGO ink as the sensitive material. In the calibration test, the detection function is:? =-13.35? 14.507) 2) (9)-27.20, and the error is 鹵2.93 dBm.. Four sets of demonstration experiments have been designed for strain sensors. The results of the demonstration experiments correctly reflect the stress changes caused by finger bending and human respiration, and are in good agreement with the detection model. Secondly, a dual RFID antenna sensor is designed for passive sensor. Two antennas are used as reference tags and one for sensing detection. In this paper, the variation of the two-antenna feedback signal intensity is analyzed in detail, and a functional model of the relationship between the feedback signal intensity difference and the parameters to be measured is established. The close detection position of dual antennas is the premise of work. By this way, the difference of signal intensity caused by antenna position difference can be reduced, and finally the quantitative detection of RFID sensor can be realized. The detection model is: = 2) (). In the practical application of the detection scheme, a humidity sensor based on dual RFID antenna structure is designed in this paper. The detection function of the humidity sensor is:? =-5.94? 2.22, and the error is 鹵0.40 dBm.. Judging from the test results of the demonstration experiment,? The variation of the mean value accords with the theoretical expectation of the detection model and can detect the humidity change better. In general, this paper starts with active sensor and passive sensor, and provides two different quantitative detection schemes for antenna sensor. Both of the two quantitative detection schemes have good reliability and can be used in the development of sensors. The realization of quantitative detection scheme not only promotes the application of antenna sensor in real life, but also provides a new way to simplify the signal model of antenna sensor in academic research.
【學(xué)位授予單位】：上海師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP212
本文編號：2460047
[Abstract]:Antenna sensors have been widely used in many applications such as biosensors, gas sensors, strain sensors and so on because of their advantages such as simple fabrication, small size and so on. However, at present, there are still the following problems in the research of antenna sensor: 1. In order to obtain accurate and detailed detection data, professional equipment such as network analyzer is usually used to detect antenna sensor, and the operation of this detection mode is complex. High technical requirements, only suitable for academic research; 2. Using portable devices such as RFID reader, smart phone and other portable devices, although the operation is simple and convenient and quick, most of them can only give qualitative detection results, and the application in wireless sensor networks has its limitations. In this paper, the design and application of the antenna sensor which can be quantitatively detected are studied on the basis of the portable equipment. The main contents are as follows: firstly, the active antenna sensor based on Bluetooth technology is designed in this paper. On the basis of previous work, the propagation model of bluetooth signal is analyzed preliminarily, and the method of omnidirectional antenna is proposed to solve the problem that the model cannot be simplified because of the uncertainty of space angle, and the propagation model is further optimized. The objective of quantificationally detecting the parameters to be tested is achieved. The final quantitative detection model was: (, (9) = 1) ()-109) lg (9). In this paper, two kinds of sensors, humidity sensor and strain sensor, are made, and the reliability of the quantitative detection model is verified in the practical demonstration experiment. The humidity sensor uses pencil imprinting as sensitive material. The detection function obtained in calibration test is: =-38.54 脳 14.507) 2) (9)-30.42, and the error is 鹵3.59 dBm.. From the actual test results, the experimental error is smaller than the theoretical error. At the same time, under the dynamic environment humidity, it can also quickly detect the change of humidity, which effectively proves the reliability of the quantitative detection function. The strain sensor uses S-RGO ink as the sensitive material. In the calibration test, the detection function is:? =-13.35? 14.507) 2) (9)-27.20, and the error is 鹵2.93 dBm.. Four sets of demonstration experiments have been designed for strain sensors. The results of the demonstration experiments correctly reflect the stress changes caused by finger bending and human respiration, and are in good agreement with the detection model. Secondly, a dual RFID antenna sensor is designed for passive sensor. Two antennas are used as reference tags and one for sensing detection. In this paper, the variation of the two-antenna feedback signal intensity is analyzed in detail, and a functional model of the relationship between the feedback signal intensity difference and the parameters to be measured is established. The close detection position of dual antennas is the premise of work. By this way, the difference of signal intensity caused by antenna position difference can be reduced, and finally the quantitative detection of RFID sensor can be realized. The detection model is: = 2) (). In the practical application of the detection scheme, a humidity sensor based on dual RFID antenna structure is designed in this paper. The detection function of the humidity sensor is:? =-5.94? 2.22, and the error is 鹵0.40 dBm.. Judging from the test results of the demonstration experiment,? The variation of the mean value accords with the theoretical expectation of the detection model and can detect the humidity change better. In general, this paper starts with active sensor and passive sensor, and provides two different quantitative detection schemes for antenna sensor. Both of the two quantitative detection schemes have good reliability and can be used in the development of sensors. The realization of quantitative detection scheme not only promotes the application of antenna sensor in real life, but also provides a new way to simplify the signal model of antenna sensor in academic research.
【學(xué)位授予單位】：上海師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP212
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