CN108398387A - A NO Concentration Detector Based on Spectrum - Google Patents
A NO Concentration Detector Based on Spectrum Download PDFInfo
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- CN108398387A CN108398387A CN201710067560.2A CN201710067560A CN108398387A CN 108398387 A CN108398387 A CN 108398387A CN 201710067560 A CN201710067560 A CN 201710067560A CN 108398387 A CN108398387 A CN 108398387A
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- 238000001228 spectrum Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 208000023504 respiratory system disease Diseases 0.000 description 1
- 239000007784 solid electrolyte Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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Abstract
本发明涉及浓度检测技术领域，尤其涉及到一种基于光谱的NO浓度检测仪。包括检测底座，检测底座上设置有减震柱，减震柱上固定设置有检测腔室，检测腔室中设置有样品管，位于样品管首端连接有固定在检测腔室外侧的检测单元，位于样品管尾端连接有光源；样品管上设置有进样口和出样口；检测腔室外侧还固定设置有一个与检测单元连接的主板，主板上设置有数字输出接口、模拟电压输出接口以及电源接口。本发明结构简单、操作简便灵活、测量精确且输出方式多样化且还可以实现周期性自动校准功能，可以精确帮客户了解并显示机动车废气中NO参数变化，可以为治理大气环境污染提供参考数据。
The invention relates to the technical field of concentration detection, in particular to a spectrum-based NO concentration detector. It includes a detection base, a shock-absorbing column is arranged on the detection base, a detection chamber is fixedly arranged on the shock-absorption column, a sample tube is arranged in the detection chamber, and a detection unit fixed on the outside of the detection chamber is connected to the head end of the sample tube. There is a light source connected to the end of the sample tube; the sample tube is provided with a sample inlet and a sample outlet; a main board connected to the detection unit is fixed outside the detection chamber, and the main board is provided with a digital output interface and an analog voltage output interface and power connector. The invention has the advantages of simple structure, convenient and flexible operation, accurate measurement and diversified output modes, and can also realize periodic automatic calibration function, which can accurately help customers understand and display NO parameter changes in motor vehicle exhaust gas, and can provide reference data for controlling atmospheric environmental pollution .
Description
技术领域technical field
本发明涉及浓度检测技术领域，尤其涉及到一种基于光谱的NO浓度检测仪。The invention relates to the technical field of concentration detection, in particular to a spectrum-based NO concentration detector.
背景技术Background technique
氮氧化物NOX(NO和NO2)是大气的主要污染物之一，主要危害包括引发人类呼吸道疾病，形成酸雨和化学烟雾，破坏环境等。氮氧化物主要来源于汽车尾气的排放，因此对尾气中NOX浓度的检测就显得十分重要。Nitrogen oxides NO X (NO and NO 2 ) are one of the main pollutants in the atmosphere. The main hazards include causing human respiratory diseases, forming acid rain and chemical smog, and destroying the environment. Nitrogen oxides are mainly derived from vehicle exhaust emissions, so it is very important to detect the concentration of NO X in exhaust gas.
NOX检测器在US2010/0243447 A1中有详细的描述，这些尾气检测器的片芯部分的结构是通过把固体电解质的素坯进行切割成形，再印刷上电极图案，层层叠压后煅烧而成的，其内部结构包括多个腔室和气体扩散通道。这种检测器具有小尺寸高性能的特点，然而，它的制备工艺复杂，数据显示不明显，因为在其一层中有几种结构，且间隙部分需要在结构中形成，并且内部的腔室或气体通道在制备过程中，容易发生裂纹和坍塌。NO X detectors are described in detail in US2010/0243447 A1. The structure of the core part of these exhaust gas detectors is formed by cutting and forming the green body of the solid electrolyte, printing electrode patterns, layering and pressing, and then calcining. , its internal structure includes multiple chambers and gas diffusion channels. This detector has the characteristics of small size and high performance, however, its preparation process is complicated, and the data display is not obvious, because there are several structures in one layer, and the gap part needs to be formed in the structure, and the internal cavity Or the gas channel is prone to cracks and collapses during the preparation process.
发明内容Contents of the invention
鉴于上述技术缺陷，本发明提供了一种基于光谱的NO浓度检测仪。该检测仪结构简单，可以精确帮客户了解机动车废气中NO参数变化，可以为治理大气环境污染提供参考数据，使用基于光谱的NO浓度检测仪，可以方便地检测NO的浓度并直观的表现出来。In view of the above-mentioned technical defects, the present invention provides a spectrum-based NO concentration detector. The detector has a simple structure, which can accurately help customers understand the changes of NO parameters in motor vehicle exhaust gas, and can provide reference data for the control of atmospheric environmental pollution. Using the spectrum-based NO concentration detector, it can conveniently detect the concentration of NO and display it intuitively. .
本发明针对上述技术缺陷所采用的技术方案为：The technical scheme that the present invention adopts for above-mentioned technical defect is:
一种基于光谱的NO浓度检测仪，其中，包括：A spectrum-based NO concentration detector, including:
检测底座，所述检测底座上设置有减震柱，所述减震柱上固定设置有检测腔室，所述检测腔室中设置有样品管，位于所述样品管首端连接有固定在检测腔室外侧的检测单元，位于所述样品管尾端连接有光源；A detection base, the detection base is provided with a shock-absorbing column, and a detection chamber is fixedly arranged on the shock-absorbing column, and a sample tube is arranged in the detection chamber, and the head end of the sample tube is connected to a detection chamber fixed on the detection base. The detection unit outside the chamber is connected to a light source at the tail end of the sample tube;
所述样品管上且临近所述光源位置设置有进样口，所述样品管上且临近所述检测单元位置设置有出样口；所述检测腔室外侧还固定设置有一个与检测单元连接的主板，所述主板上设置有数字输出接口、模拟电压输出接口以及电源接口。A sample inlet is provided on the sample tube and close to the position of the light source, and a sample outlet is provided on the sample tube and close to the position of the detection unit; the outside of the detection chamber is also fixedly provided with a The main board is provided with a digital output interface, an analog voltage output interface and a power supply interface on the main board.
上述的基于光谱的NO浓度检测仪，其中，所述数字输出接口用于连接外界的PC机。In the above spectrum-based NO concentration detector, wherein the digital output interface is used to connect to an external PC.
上述技术方案具有如下优点或有益效果：The above technical solution has the following advantages or beneficial effects:
本发明基于光谱的NO浓度检测仪结构简单、操作简便灵活、测量精确且输出方式多样化且还可以实现周期性自动校准功能，可以精确帮客户了解并显示机动车废气中NO参数变化，可以为治理大气环境污染提供参考数据。The spectrum-based NO concentration detector of the present invention has the advantages of simple structure, convenient and flexible operation, accurate measurement and diversified output modes, and can also realize periodic automatic calibration function, which can accurately help customers understand and display NO parameter changes in motor vehicle exhaust gas, and can be used for Provide reference data for the control of air pollution.
附图说明Description of drawings
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明及其特征、外形和优点将会变得更加明显。在全部附图中相同的标记指示相同的部分。并未可以按照比例绘制附图，重点在于示出本发明的主旨。The invention and its characteristics, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings. Like numbers designate like parts throughout the drawings. The drawings may not be drawn to scale, emphasis instead being placed upon illustrating the gist of the invention.
图1是本发明基于光谱的NO浓度检测仪的主视图；Fig. 1 is the front view of the NO concentration detector based on spectrum of the present invention;
图2是本发明基于光谱的NO浓度检测仪的俯视图；Fig. 2 is the top view of the NO concentration detector based on spectrum of the present invention;
图3是本发明基于光谱的NO浓度检测仪的侧视图。Fig. 3 is a side view of the spectrum-based NO concentration detector of the present invention.
具体实施方式Detailed ways
下面结合附图和具体的实施例对本发明作进一步的说明，但是不作为本发明的限定。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
具体的，如图1～图3所示，本发明基于光谱的NO浓度检测仪具体结构包括有：Specifically, as shown in Figures 1 to 3, the specific structure of the spectrum-based NO concentration detector of the present invention includes:
检测底座1，在检测底座上设置有减震柱2，减震柱2上固定设置有检测腔室3，检测腔室中设置有样品管4，位于样品管首端连接有固定在检测腔室外侧的检测单元7，位于样品管尾端连接有光源8；The detection base 1 is provided with a shock-absorbing column 2 on the detection base, and a detection chamber 3 is fixedly arranged on the shock-absorbing column 2. A sample tube 4 is arranged in the detection chamber, and the head end of the sample tube is connected to a tube fixed in the detection chamber. The outer detection unit 7 is connected to a light source 8 at the end of the sample tube;
样品管上且临近光源位置设置有进样口5，该进样口延伸至检测腔室外界；样品管上且临近检测单元位置设置有出样口6；检测腔室外侧还固定设置有一个与检测单元连接的主板9，主板9上设置有数字输出接口10、模拟电压输出接口11以及电源接口12。A sample inlet 5 is arranged on the sample tube and close to the light source, and the sample inlet extends to the outside of the detection chamber; a sample outlet 6 is arranged on the sample tube and close to the position of the detection unit; The main board 9 connected to the detection unit is provided with a digital output interface 10 , an analog voltage output interface 11 and a power supply interface 12 .
在本发明的实施例中，优选的，SIO接口用于连接外界的PC机。In the embodiment of the present invention, preferably, the SIO interface is used to connect to an external PC.
本发明基于光谱的NO浓度检测仪中各装置连接好之后，电源通电同时开启光源，该检测仪需要有15分钟的预热，然后将需要检测的气体从进样口通入样品管中，检测的气体通过出样口流出，光源穿过需检测的气体进入检测单元，检测单元通过不同的光谱特性分析出该气体中相应的NO浓度，检测出的NO浓度可以由两种方式输出：After the devices in the spectrum-based NO concentration detector of the present invention are connected, the power is turned on and the light source is turned on at the same time. The detector needs to be preheated for 15 minutes, and then the gas to be detected is passed into the sample tube from the sample inlet to detect The gas flows out through the sample outlet, the light source passes through the gas to be detected and enters the detection unit, and the detection unit analyzes the corresponding NO concentration in the gas through different spectral characteristics. The detected NO concentration can be output in two ways:
一种是模拟电压输出，通过NOX接口或模拟电压输出接口输出，模拟电压对应于0ppm到5000ppm；另一种是数字数据输出，通过SIO接口或数字输出接口与PC机通信输出。模拟输出和数字输出均可以实现自动校零或跨度校准，数字输出的校准是通过PC机发送相应指令来实现的，模拟输出的校准则需要在安装该检测仪的外部系统的CPU中进行。One is the analog voltage output, which is output through the NOX interface or the analog voltage output interface, and the analog voltage corresponds to 0ppm to 5000ppm; the other is the digital data output, which is communicated with the PC through the SIO interface or the digital output interface. Both the analog output and the digital output can realize automatic zero calibration or span calibration. The calibration of the digital output is realized by sending corresponding instructions from the PC, and the calibration of the analog output needs to be performed in the CPU of the external system where the detector is installed.
本发明基于光谱的NO浓度检测仪具有多重功能：The spectrum-based NO concentration detector of the present invention has multiple functions:
1、简便灵活：该检测仪可以独立使用，也可以配合汽车尾气检测系统一起使用；既可以将检测的NO浓度直接上传到任何一台PC机上，又可以将检测的结果上传至尾气检测系统上进行分析。1. Simple and flexible: the detector can be used independently or together with the automobile exhaust detection system; it can not only upload the detected NO concentration directly to any PC, but also upload the detection results to the exhaust gas detection system for analysis.
2、测量精确且输出方式多样化：检测都是在标准环境下进行，而且多次测量，故测量的数据更具可比性且精度高；测量结果的输出既支持数字数据输出，又支持模拟电压输出。2. Accurate measurement and diversified output methods: the detection is carried out in a standard environment, and multiple measurements are made, so the measured data is more comparable and has high precision; the output of the measurement results supports both digital data output and analog voltage output.
3、周期性自动校准：能定期自动校零或跨度校准。3. Periodic automatic calibration: it can automatically perform zero or span calibration on a regular basis.
4、结构紧凑：可以轻易地安装在一个机架测量系统中。4. Compact structure: it can be easily installed in a rack measuring system.
本领域技术人员应该理解，本领域技术人员在结合现有技术以及上述实施例可以实现所述变化例，在此不做赘述。这样的变化例并不影响本发明的实质内容，在此不予赘述。Those skilled in the art should understand that those skilled in the art can implement the variation example by combining the existing technology and the foregoing embodiments, and details are not described here. Such variations do not affect the essence of the present invention, and will not be repeated here.
以上对本发明的较佳实施例进行了描述。需要理解的是，本发明并不局限于上述特定实施方式，其中未尽详细描述的设备和结构应该理解为用本领域中的普通方式予以实施；任何熟悉本领域的技术人员，在不脱离本发明技术方案范围情况下，都可利用上述揭示的方法和技术内容对本发明技术方案作出许多可能的变动和修饰，或修改为等同变化的等效实施例，这并不影响本发明的实质内容。因此，凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均仍属于本发明技术方案保护的范围内。The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; Within the scope of the technical solution of the invention, many possible changes and modifications can be made to the technical solution of the present invention by using the methods and technical content disclosed above, or be modified into equivalent embodiments with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention, which do not deviate from the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.
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| CN206609778U (en) * | 2017-02-07 | 2017-11-03 | 上海艾梦电子科技有限公司 | A kind of NO concentration detectors based on spectrum |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5184017A (en) * | 1989-09-12 | 1993-02-02 | Sensors, Inc. | Method and apparatus for detecting a component gas in a sample |
| US5464982A (en) * | 1994-03-21 | 1995-11-07 | Andros Incorporated | Respiratory gas analyzer |
| US5545897A (en) * | 1994-10-04 | 1996-08-13 | Santa Barbara Research Center | Optically-based chemical detection system |
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