WO2017177487A1 - 基于反射镜的透射式cod检测装置 - Google Patents

基于反射镜的透射式cod检测装置 Download PDF

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Publication number
WO2017177487A1
WO2017177487A1 PCT/CN2016/081485 CN2016081485W WO2017177487A1 WO 2017177487 A1 WO2017177487 A1 WO 2017177487A1 CN 2016081485 W CN2016081485 W CN 2016081485W WO 2017177487 A1 WO2017177487 A1 WO 2017177487A1
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Prior art keywords
mirror
tube assembly
ultraviolet
assembly
infrared
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PCT/CN2016/081485
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English (en)
French (fr)
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钟镭
寇立冬
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天津视讯云光电科技有限公司
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Publication of WO2017177487A1 publication Critical patent/WO2017177487A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01N21/55—Specular reflectivity
    • G01N21/552—Attenuated total reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • 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
    • G01N21/55—Specular reflectivity

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  • the invention belongs to the field of optical measurement technology and is mainly used for monitoring or detecting COD concentration in the field of water quality monitoring or detection.
  • the chemical reagent method is the most commonly used, and the potassium dichromate method is used for COD parameter detection.
  • the potassium dichromate method requires a chemical reaction, a long reaction time, low efficiency, and chemical agents are likely to cause secondary pollution to the environment.
  • the traditional optical UV method uses closed measurement, which is not conducive to outdoor real-time monitoring. For large-scale surface water quality monitoring, a new method and device are urgently needed to realize the rapid detection function.
  • the object of the invention is to solve the defects that the traditional chemical reagent COD detection method has low detection efficiency and is easy to generate secondary pollution, and the traditional optical UV method is not conducive to outdoor real-time monitoring, and the mirror-based transmissive COD optical detection device is used to realize water quality. COD rapid detection. Provide a new testing program for environmental protection departments, sewage treatment departments, and sewage treatment enterprises.
  • the mirror-based transmissive COD detecting device comprises a mainframe bracket 1; a sink 7 is fixedly mounted below the mainframe bracket; and a receiving tube assembly 2, a launching tube assembly 3 and a control are fixedly mounted on the upper side of the mainframe bracket through the mainframe backing plate 4
  • the mirror bracket 10 is fixedly mounted on the main body back plate, and the mirror assembly 8 is fixedly mounted below the mirror bracket, and the mirror assembly is placed inside the water tank;
  • the transmitting tube assembly and the receiving tube assembly are composed of 4 signal lines and The four signal input ports on one side of the controller are connected; the transmitting tube assembly 3 emits infrared light and ultraviolet light, and the two light rays are irradiated to the mirror surface on the mirror assembly 8 through the water surface 25 in the water tank 7, and the light is specularly reflected.
  • the receiving tube assembly converts the received optical signal into an electrical signal and transmits it to the controller, and the controller calculates the COD value by the infrared light and ultraviolet light signal intensity change values.
  • the launch tube assembly of the present invention is composed of an ultraviolet transmitting tube 13 and an infrared transmitting tube 22, and is fixedly mounted on the main unit backing plate 4 through the launch tube holder 16.
  • the ultraviolet emission tube is sequentially composed of an ultraviolet light source 14, an ultraviolet front lens 15, and a purple
  • the outer rear lens 17 is configured;
  • the infrared light emitting tube is sequentially composed of an infrared light source 20, an infrared front lens 19, and an infrared rear lens 18.
  • the receiving tube assembly 2 is identical in structure to the launch tube assembly 3, wherein the ultraviolet light source 14 and the infrared light source 20 are replaced by an optical signal receiving sensor.
  • the mirror assembly is composed of an ultraviolet mirror 26 and an infrared mirror 27.
  • the device of the invention emits a fixed power optical signal through the infrared light source and the ultraviolet emission tube which are parallelly mounted on the light-emitting tube bracket respectively through the light source in the launch tube, and the light is collected by the front lens in the tube and transmitted to the rear lens, and passes through the rear lens.
  • the zoom processing emits a parallel beam, and the infrared and ultraviolet rays parallel beams adjusted by the front lens and the rear lens are irradiated onto the measured water surface, and are refracted by the water surface to be immersed in the water mirror, the infrared rays are reflected by the infrared mirror, and the ultraviolet rays are reflected by the ultraviolet light.
  • the infrared light is irradiated to the infrared receiving tube, and the ultraviolet light is irradiated to the ultraviolet receiving tube.
  • the converted electric signal data is transmitted to the controller, and the controller according to the infrared signal
  • the attenuation value is calculated to obtain the turbidity value in water.
  • the initial value of COD is calculated by the attenuation value of the ultraviolet signal. After the relationship between turbidity and COD, the initial value of COD is compensated and the final COD detection value is obtained.
  • the liquid level height of the water surface is limited by the height of the water outlet of the water tank to the fixed liquid level. The water inlet and outlet ensure circulation of liquid in the water tank.
  • the invention adopts a non-contact type of transmissive optical detection method based on a mirror.
  • the optical detection method has high detection speed and high efficiency, and greatly reduces manpower input and material input when detecting water samples.
  • the optical detection method adopted by the present invention has no secondary pollution to the environment.
  • the invention adopts a mirror to perform optical detection.
  • the transmitting tube and the receiving tube can be mounted on the same side, and the non-contact measurement is realized by the principle of light specular reflection, thereby increasing the device to the environment.
  • the adaptability can be used for outdoor surface water, drainage, sewage and other location monitoring.
  • Figure 1 is a structural view of a transmissive COD detecting apparatus based on a mirror of the present invention.
  • FIG. 2 is a structural view of an arc tube assembly of the apparatus of the present invention.
  • Figure 3 is a schematic diagram of the detection of the apparatus of the present invention.
  • Figure 4 is a structural view of the mirror assembly of the apparatus of the present invention.
  • the mirror-based transmissive COD detecting device includes a mainframe bracket 1 and the water tank 7 is fixed to the mainframe bracket 1 by fixing bolts 5.
  • the water tank is provided with a water inlet 6 and a water outlet 9, and the liquid level position 25 in the water tank is determined by the height of the water outlet 9.
  • the mainframe bracket 1 is simultaneously used for mounting the fixed host backboard 4, and the mainboard backplane 4 is fixed to the mainframe bracket 1 through the backboard fixing base 12, and the receiving tube assembly 2, the transmitting tube assembly 3 and the controller 11 are fixed to the back of the main body by screws.
  • the mirror assembly 8 is fixed to the main unit back plate 4 via the mirror holder 10, and the mirror assembly 8 is placed inside the water tank 7.
  • the mirror assembly 8 is composed of an ultraviolet mirror 26 and an infrared mirror 27 for mirror surface. Fixed after parallel adjustment.
  • the launching tube assembly 3 is composed of an ultraviolet transmitting tube 13 and an infrared emitting tube 22 and is fixed on the main unit back plate 4 through the launch tube holder 16. Inside the ultraviolet emitting tube 13, the ultraviolet light source 14, the ultraviolet front lens 15, and the ultraviolet rear stage are disposed.
  • the lens 17 is constructed, and the structure and principle of the infrared emission tube 22 and the ultraviolet emission tube 13 are the same.
  • the receiving tube assembly 2 has the same structure as the transmitting tube assembly 3, except that the light source employed in the transmitting tube assembly is replaced by an optical signal receiving sensor.
  • the receiving tube assembly is fixed in the same manner as the transmitting tube assembly.
  • the transmitting tube assembly 3 and the receiving tube assembly 2 are connected by four signal lines to four signal input ports on the controller 11 side.
  • the controller 11 is composed of a processor, a liquid crystal display control circuit, a motor drive control circuit, a signal transmission circuit, a signal acquisition and demodulation circuit, and a power supply circuit (prior art, omitted here).
  • the ultraviolet light source 14 emits ultraviolet light and is zoomed by the ultraviolet front lens 15 to be irradiated to the ultraviolet rear lens 17, and passes through the ultraviolet rear lens 17 to form a collimated light beam.
  • the infrared beam is the same as the UV beam. Since the ultraviolet emission tube 13 and the infrared emission tube 22 are fixed in parallel by the emission tube holder 16, the ultraviolet light and the infrared light are emitted parallel to the water surface 25, and are refracted by the water surface to the mirror assembly 8, and are returned to the water surface after being reflected, and transmitted to the receiving surface.
  • the received light signal is transmitted to the controller 11 through the signal line, and the controller 11 calculates the attenuation value of the infrared signal and the attenuation value of the ultraviolet signal, respectively, and finally calculates by the law of Beer-Lambert law.
  • the COD value is displayed on the liquid crystal panel of the controller 11.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

基于反射镜的透射式COD检测装置，主要包括主机支架（1）；主机支架（1）下方的水槽（7），主机支架（1）上方通过主机背板（4）安装的接收管组件（2）、发射管组件（3）和控制器（11）；主机背板（4）上同时通过反射镜支架（10）安装有反射镜组件（8），反射镜组件（8）置于水槽（7）内部；发射管组件（3）和接收管组件（2）由4根信号线与控制器（11）一侧的4路信号输入口相连。本装置通过水样对紫外线的吸光度测定水样中COD含量，适用于水质监测领域，主要用于水样COD含量检测。本装置检测速度快，可实时监测采样数据，比传统计的化学试剂检测方法大大提高了检测效率，非常适用于实时快速检测需要。

Description

基于反射镜的透射式COD检测装置 技术领域
本发明属于光学测量技术领域，主要应用在水质监测或检测领域中的COD浓度监测或检测。
背景技术
在水质COD参数检测领域中最常用的是化学试剂法，采用重铬酸钾法进行COD参数检测。重铬酸钾法需要进行化学反应，反应时间长，效率低，化学试剂容易对环境造成二次污染。传统的光学UV法，均采用封闭式测量，不利于户外实时监测。对于大面积的地表水水质监测急需一种新的方法和装置来实现快速检测功能。
发明内容
本发明的目的是解决传统化学试剂COD检测方法检测效率低，容易产生二次污染的缺点，以及传统光学UV法不利于户外实时监测的问题，采用基于反射镜的透射式COD光学检测装置实现水质COD快速检测。为环保部门、污水治理部门，污水处理企业提供一种新的检测方案。
本发明的技术方案：
基于反射镜的透射式COD检测装置，该装置包括主机支架1；主机支架的下方固定安装有水槽7；主机支架的上方通过主机背板4固定安装有接收管组件2、发射管组件3和控制器11；主机背板上同时固定安装有反射镜支架10，反射镜支架的下方固定安装有反射镜组件8，反射镜组件置于水槽内部；发射管组件和接收管组件由4根信号线与控制器一侧的4路信号输入口相连；所述的发射管组件3发出红外光线和紫外光线，两束光线经过水槽7内的水面25照射到反射镜组件8上的镜面，光线被镜面反射后透过水面25照射至接收管组件2，接收管组件将接收到的光信号转换为电信号并传输至控制器，控制器通过红外光与紫外光信号强度变化值计算COD值。
本发明所述的发射管组件由紫外发射管13和红外发射管22构成，并通过发射管支架16固定安装在主机背板4上。所述紫外发射管顺次由紫外光源14、紫外前置透镜15和紫 外后置透镜17构成；所述红外发射管顺次由红外光源20、红外前置透镜19和红外后置透镜18构成。所述接收管组件2与发射管组件3结构相同，其中紫外光源14和红外光源20由光信号接收传感器代替。
所述反射镜组件由紫外反射镜26和红外反射镜27构成。
本发明装置由平行安装在发光管支架上的红外发射管与紫外发射管分别通过发射管内的光源发出固定功率的光信号，光线经过管内前置透镜聚集并传送到后置透镜，经过后置透镜变焦处理发出平行光束，经过前置透镜与后置透镜调整后的红外线与紫外线平行光束照射到被测水面，经过水面折射照射至浸入水中反光镜上，红外线通过红外反射镜反射，紫外线通过紫外反射镜反射，经过反射后的两束光线，红外光线照射至红外接收管，紫外光线照射至紫外接收管，经过接收管信号采集后将转换后的电信号数据传送至控制器，控制器根据红外信号衰减值计算得出水中浊度值，通过紫外信号衰减值计算得出COD初值，经过浊度与COD关系影响，对COD初值进行数据补偿，得出最终COD检测值。水面的液位高度由水槽的出水口高度限制在固定液位高度。进水口与出水口保证水槽内液体循环。
本发明的优点和有益效果：
1)本发明采用了非接触式基于反射镜的透射式光学检测方法，光学检测法检测速度快，效率高，大大减少了在检测水样时的人力投入及物力投入。
2)本发明采用的光学检测方法，对环境无二次污染。
3)本发明采用反射镜的方式进行光学检测，相对于传统的透射式方法，此方式发射管与接收管可以安装于同一侧，通过光线镜面反射原理实现非接触式测量，增加了装置对环境的适应能力，可用于户外地表水水域、排水道、污水口等位置监测。
附图说明：
图1是本发明基于反射镜的透射式COD检测装置结构图。
图2是本发明装置发光管组件结构图。
图3是本发明装置检测原理图。
图4是本发明装置反射镜组件结构图。
附图标记说明：1主机支架、2接收管组件、3发射管组件、4主机背板、5固定螺栓、6进水口、7水槽、8反射镜组件、9出水口、10反射镜支架、11控制器、12背板固定座、 13紫外发射管、14紫外光源、15紫外前置透镜、16发射管支架、17紫外后置透镜、18红外后置透镜、19红外前置透镜、20红外光源、21防水接头、22红外发射管、23发射光线、24接收光线、25水面、26紫外反射镜、27红外反射镜。
具体实施方式
下面结合附图和具体实施案例对本发明作进一步说明：如图1至图4所示，基于反射镜的透射式COD检测装置，包括主机支架1，水槽7通过固定螺栓5安装固定在主机支架1下方，水槽上设置有进水口6和出水口9，水槽中液面位置25由出水口9的高度决定。主机支架1同时用于安装固定主机背板4，主机背板4通过背板固定座12与主机支架1固定在一起，接收管组件2、发射管组件3和控制器11通过螺丝固定在主机背板4上，反射镜组件8通过反射镜支架10与主机背板4固定在一起，反射镜组件8置于水槽7内部，反射镜组件8由紫外反射镜26和红外反射镜27构成，进行镜面平行调整后固定。发射管组件3由紫外发射管13与红外发射管22构成并通过发射管支架16固定在主机背板4上，在紫外发射管13内部，由紫外光源14、紫外前置透镜15、紫外后置透镜17构成，红外发射管22与紫外发射管13结构及原理相同。
接收管组件2与发射管组件3结构相同，区别在于发射管组件中采用的光源由光信号接收传感器代替。接收管组件与发射管组件固定方式相同，发射管组件3、接收管组件2由4根信号线与控制器11一侧4路信号输入口相连。
控制器11由处理器、液晶显示控制电路、电机驱动控制电路、信号发射电路、信号采集解调电路和电源电路组成(属现有技术，此处从略)。
工作方式：
紫外光源14发出紫外光经过紫外前置透镜15变焦后照射至紫外后置透镜17，经过紫外后置透镜17后形成准直光束。红外光束与紫外光束成型原理相同。因紫外发射管13与红外发射管22被发射管支架16进行平行固定，所以紫外光线与红外光线平行射出至水面25，被水面折射至反射镜组件8，经反射后回到水面，透射至接收管组件2中，再次经过透镜变焦后将接收光信号通过信号线传送至控制器11，控制器11分别对红外信号衰减值和紫外信号衰减值进行计算，最终由比尔-郎伯定律计算得出COD值显示到控制器11的液晶屏上。
因本发明重点保护检测装置结构原理，所以COD计算方法不作介绍。
本领域的技术人员应该认识到，本实施案例的具体描述仅便于帮助读者理解本发明装置原理，本发明保护范围并不局限于本实施案例。凡是根据上述描述做出各种可能的等同替换或改变，均被认为属于本发明的权利要求的保护范围。
本发明方法的特点：
1)非接触式光学测量水质COD参数。
2)利用反射镜原理实现透射式COD参数检测。
3)采用红外线进行COD检测参数校准补偿，提高测量精度。

Claims (5)

  1. 基于反射镜的透射式COD检测装置，其特征在于该装置包括主机支架(1)；主机支架的下方固定安装有水槽(7)；主机支架的上方通过主机背板(4)固定安装有接收管组件(2)、发射管组件(3)和控制器(11)；主机背板上同时固定安装有反射镜支架(10)，反射镜支架的下方固定安装有反射镜组件(8)，反射镜组件置于水槽内部；发射管组件和接收管组件由4根信号线与控制器一侧的4路信号输入口相连；所述的发射管组件(3)发出红外光线和紫外光线，两束光线经过水槽(7)内的水面(25)照射到反射镜组件(8)上的镜面，光线被镜面反射后透过水面(25)照射至接收管组件(2)，接收管组件将接收到的光信号转换为电信号并传输至控制器，控制器通过红外光与紫外光信号强度变化值计算COD值。
  2. 根据权利要求1所述基于反射镜的透射式COD检测装置，其特征在于所述的发射管组件由紫外发射管(13)和红外发射管(22)构成，并通过发射管支架(16)固定安装在主机背板(4)上。
  3. 根据权利要求2所述装置，其特征在于所述紫外发射管顺次由紫外光源(14)、紫外前置透镜(15)和紫外后置透镜(17)构成；所述红外发射管顺次由红外光源(20)、红外前置透镜(19)和红外后置透镜(18)构成。
  4. 根据权利要求3所述装置，其特征在于所述接收管组件(2)与发射管组件(3)结构相同，其中紫外光源(14)和红外光源(20)由光信号接收传感器代替。
  5. 根据权利要求1至4任一项所述装置，其特征在于所述反射镜组件由紫外反射镜(26)和红外反射镜(27)构成。
PCT/CN2016/081485 2016-04-14 2016-05-10 基于反射镜的透射式cod检测装置 WO2017177487A1 (zh)

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