低功耗蓝牙在季冻土路基温度测试中的应用
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摘要
季冻区路基由于冻融循环产生的灾害日益严重,土体内部温度作为致灾因素不容忽视,针对有线线材对于土体本身的影响、测试设备在现场安装的繁琐以及测试装置的暴露问题,采用低功耗蓝牙技术,设计了一种基于低功耗蓝牙的无线小尺寸温度检测装置,可以对路基温度进行实时采集,传感器大小仅为2.5 cm×2.5 cm×0.5 cm,可忽略测试中的尺寸效应;利用手机作为无线接收平台,免除了有线、有源测试的不便;编写了专门的APP,可根据需要设置采样的开始停止及采样频率,使传感器智能化;直接埋置于路基土中,在埋深30 cm位置接收信号稳定良好;传感器测温范围为-40℃~125℃,实现了对季冻区环境温度的全覆盖.该装置实现了对隐蔽工程内部物性参数的动态、无损检测.测试结果表明,该测试装置稳定可靠、测试结果真实可信、测试手段简便易行,且耐腐蚀、能耗低,具有应用前景和推广价值.
The hazard of subgrade in seasonally frozen regions is increasing more serious,and most of them are caused by the freeze-thaw cycles. So as one of the hazard inducers the temperature in the subgrade can not be ignored. Considering the effect of wire to the soil and the complicated installing procedures of the test equipment,as well as the problem of the equipments' exposure to the air,the Bluetooth technology of low consumption is chosen.In this paper,a temperature monitoring device of wireless and small size which is based on the Bluetooth of low consumption is designed. The subgrade temperature can be obtained in real time by this sensor. The size of this sensor is only 2. 5 cm × 2. 5 cm × 0. 5 cm,so the size effect in the test can be ignored. The mobile phone is used as a wireless receiving platform,which is free from the cable and is easy to use. The dedicated android APP is written,which can set the start or stop and frequency of the data collection according to the requirement. This makes the device is intelligent. The sensor is buried in the subgrade directly,and the signal received is good and stable atthe depth of 30 cm under the pavement. The measuring range of this sensor is from- 40 to 125℃,which cover the whole environmental temperature range in seasonally frozen regions. The dynamic and non-destructive monitoring of physical parameters in the concealed works can be realized. The results showed that this system is stable and reliable,and the test results are believable. Moreover,the method is simple and practicable. The characteristics of corrosion resistance and low consumption also assure its broad application and spread value.
The hazard of subgrade in seasonally frozen regions is increasing more serious,and most of them are caused by the freeze-thaw cycles. So as one of the hazard inducers the temperature in the subgrade can not be ignored. Considering the effect of wire to the soil and the complicated installing procedures of the test equipment,as well as the problem of the equipments' exposure to the air,the Bluetooth technology of low consumption is chosen.In this paper,a temperature monitoring device of wireless and small size which is based on the Bluetooth of low consumption is designed. The subgrade temperature can be obtained in real time by this sensor. The size of this sensor is only 2. 5 cm × 2. 5 cm × 0. 5 cm,so the size effect in the test can be ignored. The mobile phone is used as a wireless receiving platform,which is free from the cable and is easy to use. The dedicated android APP is written,which can set the start or stop and frequency of the data collection according to the requirement. This makes the device is intelligent. The sensor is buried in the subgrade directly,and the signal received is good and stable atthe depth of 30 cm under the pavement. The measuring range of this sensor is from- 40 to 125℃,which cover the whole environmental temperature range in seasonally frozen regions. The dynamic and non-destructive monitoring of physical parameters in the concealed works can be realized. The results showed that this system is stable and reliable,and the test results are believable. Moreover,the method is simple and practicable. The characteristics of corrosion resistance and low consumption also assure its broad application and spread value.
引文
[1]张宝贵,张威,刘光琇,等.冻融循环对青藏高原腹地不同生态系统土壤细菌群落结构的影响[J].冰川冻土,2012(6):1499-1507.
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[5]于晓洋,王震宇,李广慧,等.切削温度实时测量传感器及其特性[J].电机与控制学报,2015(4):87-93.
[6]张瑞吟.低功耗蓝牙的核心技术应用[J].集成电路应用,2014(2):26-27.
[7]王志秦.基于低功耗蓝牙技术的温湿度传感器节点的设计[J].电子世界,2014(3):146-147.
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[9]金纯,贾珍梅,刘鲁云,等.基于CC2540的超低功耗蓝牙模块的设计[J].电视技术,2015(1):60-64.
[10]王凯,李智,李名兆,等.无线通信自动校准系统设计[J].哈尔滨理工大学学报,2013(2):101-104.
[11]刘贞,丁明理,王祁.RSSI信号滤波技术在机器人导航中的应用[J].电机与控制学报,2008(6):717-722.
[12]王艳美,马怀俭.基于蓝牙技术的自动测试系统的实现[J].哈尔滨理工大学学报,2005(6):103-105.
[13]王石磊.基于低功耗蓝牙技术的开关柜内电器温度采集系统的研究[J].黑龙江科技信息,2014(14):105-106.
[14]刘明.基于Zigbee的野外地温监测节点的设计[D].西安:西安工业大学,2014.
[15]张慧智,史学正,于东升,等.中国土壤温度的季节性变化及其区域分异研究木[J].土壤学报,2009,46(2):227-234.
[16]智鹏,冯云梅,蒋秋华,等.冻土地温自动监测系统的设计与实现[J].铁道学报,2009(1):59-63.
[17]罗玮.一种新兴的蓝牙技术——超低功耗蓝牙技术[J].现代电信科技,2010(10):31-34.
[18]常敏,梅晓敏,崔永进,等.基于BLE与Android的牧场温湿度智能监控系统设计[J].通信电源技术,2015(5):134-137.
[19]李仙,宋晓梅.IIC总线在移动智能终端领域中的应用[J].电子设计工程,2013,21(21):114-116,119.
[20]李伟.电阻元件对IIC总线电路性能的影响[J].煤炭技术,2010(11):37-40.
[2]庞斌,张奕,叶敏,等.基于ATmega16和AD7709的路基温度采集系统[J].仪表技术与传感器,2013(5):42-44.
[3]刘争平.多年冻土区地温测试关键技术研究[J].铁道工程学报,2009(2):35-38.
[4]董静薇,李会乐,郭艳雯,等.基于Zigbee的粮仓温湿度监测系统设计[J].哈尔滨理工大学学报,2014(2):120-124.
[5]于晓洋,王震宇,李广慧,等.切削温度实时测量传感器及其特性[J].电机与控制学报,2015(4):87-93.
[6]张瑞吟.低功耗蓝牙的核心技术应用[J].集成电路应用,2014(2):26-27.
[7]王志秦.基于低功耗蓝牙技术的温湿度传感器节点的设计[J].电子世界,2014(3):146-147.
[8]Paul Williamson.低功耗蓝牙将成为移动互联健康平台未来发展的关键[J].集成电路应用,2011(12):11-13.
[9]金纯,贾珍梅,刘鲁云,等.基于CC2540的超低功耗蓝牙模块的设计[J].电视技术,2015(1):60-64.
[10]王凯,李智,李名兆,等.无线通信自动校准系统设计[J].哈尔滨理工大学学报,2013(2):101-104.
[11]刘贞,丁明理,王祁.RSSI信号滤波技术在机器人导航中的应用[J].电机与控制学报,2008(6):717-722.
[12]王艳美,马怀俭.基于蓝牙技术的自动测试系统的实现[J].哈尔滨理工大学学报,2005(6):103-105.
[13]王石磊.基于低功耗蓝牙技术的开关柜内电器温度采集系统的研究[J].黑龙江科技信息,2014(14):105-106.
[14]刘明.基于Zigbee的野外地温监测节点的设计[D].西安:西安工业大学,2014.
[15]张慧智,史学正,于东升,等.中国土壤温度的季节性变化及其区域分异研究木[J].土壤学报,2009,46(2):227-234.
[16]智鹏,冯云梅,蒋秋华,等.冻土地温自动监测系统的设计与实现[J].铁道学报,2009(1):59-63.
[17]罗玮.一种新兴的蓝牙技术——超低功耗蓝牙技术[J].现代电信科技,2010(10):31-34.
[18]常敏,梅晓敏,崔永进,等.基于BLE与Android的牧场温湿度智能监控系统设计[J].通信电源技术,2015(5):134-137.
[19]李仙,宋晓梅.IIC总线在移动智能终端领域中的应用[J].电子设计工程,2013,21(21):114-116,119.
[20]李伟.电阻元件对IIC总线电路性能的影响[J].煤炭技术,2010(11):37-40.