CN110108844A - 一种多功能环境空气质量检测系统 - Google Patents
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Abstract
本发明是一种多功能环境空气质量检测系统,整套系统分为两部分,即硬件模块和软件模块,硬件模块包含挥发性有机化合物传感器,PM2.5微粒检测装置、PM10微粒检测装置、HCHO传感器、温湿度传感器、单片机处理器、显示模块、按键模块、放大电路模块、A/D转化模块、电源模块,整个硬件部分组装在防静电绝缘壳内,软件部分配套有相应的手机APP,可以将测得的数据进行实时传输,并保存在系统库里面方便调取。本发明一种多功能空气质量检测仪可实时检测,可随时检测室内不同地点的空气质量指标,且检测精度高。
Description
技术领域
本发明涉及室内空气质量检测技术领域,特别是一种多功能环境空气质量检测系统。
背景技术
由于室内空气污染引起的死亡人数已达11.1万人,每天大约是304人。北京室内环境检测中心调查监测了新建及新装修的幼儿园、写字楼、家庭居室等180余户近3万平方米的建筑。发现室内空气质量合格率仅为34.7%。其中,在不合格的室内空气中,氨的污染最为严重,超标率为56.9%,测得的最高值超过国家控制标准的62.8倍,平均超标36.5倍;甲醛的超标率为27.8%,苯系物(甲苯、二甲苯等)超标率为14.6%。国外大量研究结果也表明,室内空气污染会引起“致病建筑综合症”(BBS),症状包括头痛、眼、鼻和喉部不适,干咳,皮肤干燥发痒,头晕恶心注意力难于集中和对气味敏感等。建筑关联病(BRI),症状有咳嗽,胸部发紧,发烧寒颤和肌肉疼痛等,所以任何一个场所都有必要进行空气检测,给家人朋友一个舒适健康的生活环境。
现在市面上的空气检测装置由于处于反复使用和长期检测状态,其稳定性的不高,
而且容易受到相对湿度的影响,检测值不精确,使用寿命也较短,并且功能单一,无法实时检测。
发明内容
本发明专利要解决的问题是针对现有技术的不足,提出一种一种多功能环境空气质量检测系统,其检测速度快、操作简单、检测精度高,而且使用寿命更长。
本发明要解决的技术问题是通过以下技术方案实现的。本发明是一种空气质量检测仪,其特点是:包括单片机处理器、显示模块、按键模块、HCHO模块、A/D转化模块、
挥发性有机化合物传感器、温湿度传
感器、USB接口和电源模块;其中单片机处理器分别与显示模块、按键模块、A/D转化模块、VOC传感器、温湿度传感器、电源模块相连接;机接收A/D转化模块、PM2.5微粒检测模块、PM10微粒检测模块、温湿度传感器、按键模块的信号,单片机向显示模块发送信号;所述甲醛传感器依次连接放大电路模块、A/D转化模块,HCHO传感器将采集的信号经过放大电路模块放大后,传输给A/D转化模块。
为实现上述技术目的,本实发明采用如下技术方案实现:
所述的该发明有无线传输模块,可以实时与手机APP进行互联,并且APP将数据存储在数据库中;
所述的该发明拥有电源模块,同时配有USB口,两种方式都可对其供电;
所述的该发明显示模块采用高清LCD液晶显示屏;
所述的该发明挥发性有机化合物采用MS1200传感器;
所述的该发明HCHO传感器采用德国进口CH2O传感器;
所述的该发明温湿度传感器采用HTU21温湿度传感器;
所述的该发明单片机处理器采用MSP430处理器芯片;
与现有技术相比,本发明一种空气质量检测仪具有检测速度快,开机后进行数据自动校准,时长约为1分钟,校准后可读出准确的实时数据;且操作简单,非专业人员只要开机就能检测;本发明一种多功能环境空气质量检测仪可实时检测,可随时检测室内不同地点的空气质量指标且检测精度高,在显示面板上会显示出室内的甲醛含量、 PM2.5、PM10含量、温度、湿度、时间等系列参数。
附图说明
图1是本发明的内部结构示意图
图2是本发明实施例程序框图
具体实施方式
以下参照附图,进一步描述本发明的具体技术方案,以便于本领域的技术人员进一步地理解本发明,而不构成其权力的限制。
参照图1,一种多功能环境空气质量检测系统,包括硬件模块和软件模块。在该空气检测仪的四个角是4个螺栓和螺母,在其内部有两个并列的抽气风扇2,抽气风扇将抽进仪器内部的空气通过进气通道13进入多种传感器12,传感器对进入的气体成分、含量、浓度等进行分析,并将分析的结果通过A/D转换传入单片机11,单片机一方面将数据结果进行显示,另外一方面输送进无线传输模块8,无线传输模块和手机APP进行无线网络传输,进行成分分析过后的气体通过出气孔9散出。散热口4为整台仪器散热,该仪器有两种供电方式蓄电池5和USB孔7。整台仪器的尺寸为长217cm,宽7cm,高 10cm,仪器的外壳是抗静电绝缘。图2为该仪器内部模块工作原理示意图。
所述的该发明显示模块采用高清LCD液晶显示屏。
所述的该发明挥发性有机化合物采用MS1200传感器。
所述的该发明HCHO传感器采用德国进口CH2O传感器。
所述的该发明温湿度传感器采用HTU21温湿度传感器。
所述的该发明单片机处理器采用MSP430处理器芯片内。
多种传感器将采集的信号,通过放大电路模块放大后,传输给 A/D转化模块,经过A/D转化后,将信号传输给单片机处理器;同时,单片机处理器接收传感器、温湿度传感器传输的信号;单片机处理器控制显示模块的输出,将空气质量检测的指标通过显示模块显示出来;电源模块为单片机处理器提供电源,同时当空气质量检测仪进行充电时,单片机处理器实时检测充电电路,可实时显示空气质量检测仪的剩余电量,防止锂电池充爆,提供了安全保证。
本发明的工作原理:通过空气在工作电极和对电极上发生相应的氧化还原反应并释放电荷形成电流,产生的电流大小与甲醛的浓度成正比并遵循法拉第定律,通过测试电流的大小即可判定甲醛浓度的高低,甲醛和氧气在工作电极和对电极上发生相应的氧化还原反应并释放电荷形成电流,产生的电流大小与甲醛的浓度成正比并遵循法拉第定律,通过试电流的大小即可判定甲醛浓度的高低。通过设置防水透气膜作为憎水屏障,能够使甲醛传感器防水性能和透气性能更好,憎水屏障具有防止电解质泄漏的作用,避免出现由于过量水分进入甲醛传感器壳体,形成大湿度条件,而使电解质过量蓄积水分导致泄漏的情况,因此甲醛传感器能够不受湿度影响,而且这种甲醛传感器具有较高孔率屏障并允许气体分子自由流动,检测值更加准确;通过设置参考电极,能够解决因甲醛的浓度不断升高,甲醛传感器的电流与甲醛浓度不成线性关系的问题,参考电极安装在电解质中,与传感电极邻近,固定的稳定恒电势作用于传感电极,参考电极可以保持传感电极上的这种固定电压值,因此可使甲醛传感器输出的电流值于空气中从0到高浓度的甲醛浓度呈线性关系,输出信号的精确度更加高;此外,本发明还具有低功耗、高灵敏度、线性范围宽、抗干扰能力强、优异的重复性和稳定性的技术效果,快速响应不需要安装检测药片即可实时,检测无需预热时间,用户可自校准自动背光显示大量程检测范围。
Claims (7)
1.一种多功能环境空气质量检测系统,其特征在于,包括螺栓1、抽气风扇2、进气通道3、散热孔4、电池5、绝缘导线6、USB孔7、无线传输设备8、出气口9、杜邦线10、单片机模块11、各种传感器模块12、出气通道13、静电绝缘外壳14。
2.根据权利要求1所述的多功能空气质量检测系统,其特征在于:所述的显示模块采用高清LCD液晶显示屏。
3.根据权利要求1所述的多功能空气质量检测系统,其特征在于:电源模块,同时配有USB口,两种方式都可对其供电。
4.根据权利要求1所述的多功能空气质量检测系统,其特征在于:挥发性有机化合物采用MS1200传感器。
5.根据权利要求1所述的多功能空气质量检测系统,其特征在于:HCHO传感器采用德国进口CH2O传感器。
6.根据权利要求1所述的多功能空气质量检测系统,其特征在于:温湿度传感器采用HTU21温湿度传感器。
7.根据权利要求1所述的多功能空气质量检测系统,其特征在于:单片机处理器采用MSP430处理器芯片。
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CN204731227U (zh) * | 2015-06-30 | 2015-10-28 | 连云港岚宝电子科技有限公司 | 一种空气质量检测仪 |
CN206132119U (zh) * | 2016-10-09 | 2017-04-26 | 南昌航空大学 | 一种多功能空气质量检测仪 |
CN206161622U (zh) * | 2016-10-28 | 2017-05-10 | 尹延柏 | 一种空气质量检测仪 |
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CN112858394A (zh) * | 2020-12-31 | 2021-05-28 | 广州奥松电子有限公司 | 一种检测系统、装置及其测量方法、温湿度补偿方法 |
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