CN103645159A - High-precision sea in-situ turbidity monitor - Google Patents

High-precision sea in-situ turbidity monitor Download PDF

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CN103645159A
CN103645159A CN 201310563156 CN201310563156A CN103645159A CN 103645159 A CN103645159 A CN 103645159A CN 201310563156 CN201310563156 CN 201310563156 CN 201310563156 A CN201310563156 A CN 201310563156A CN 103645159 A CN103645159 A CN 103645159A
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situ
turbidity
sea
system
marine
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CN 201310563156
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Chinese (zh)
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CN103645159B (en )
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叶树明
蒋凯
胡轶
高晓辉
罗建超
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浙江大学苏州工业技术研究院
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Abstract

The invention discloses a high-precision sea in-situ turbidity monitor, which adopts a housing made of sea water corrosion-resistant materials, adopts a modulation-demodulation weak current signal amplification system, and adopts low-power system circuit design; the monitor can operate for more than 3 months with one battery, has two operating modes of data real time transmission and underwater self-storage, has a maximum operating water depth of 3000 m, can realize boat-carrying vertical profile investigation and horizontal dragging determination of turbidity of various water bodies such as sea, deep lakes, and the like, and can be integrated with third-party platforms for long-term in-situ monitoring, such as a multiparameter system, sea buoys/subsurface buoys, a seabed observational network, and the like.

Description

一种高精度海洋原位浊度监测仪 A high precision turbidity monitor marine situ

技术领域 FIELD

[0001] 本发明涉及海洋环境原位监测领域,具体涉及一种高精度海洋原位浊度监测仪。 [0001] The present invention relates to the field of in-situ monitoring of the marine environment, particularly relates to a high-precision marine situ turbidity monitor.

背景技术 Background technique

[0002] 浊度表示水的浑浊程度,水的浊度由泥沙、粘土、藻类及其他微生物、不溶性无机物和有机物等微粒悬浮物质阻碍光线透过水层引起,即通过水体的部分光线会被吸收和散射。 [0002] represents a degree of turbidity of water turbidity, the turbidity of the water by the silt, clay, algae and other microorganisms, such as organic and insoluble inorganic particulate matter suspended due to obstruction of light through the aqueous layer, i.e., part of the light will pass the body of water It is absorbed and scattered. 水的浑浊度越高,反射光和散射光就越强,而透射光就越弱;反之,水的浊度越低,反射光和散射光就越弱,而透射光就越强。 The higher the turbidity of the water, the stronger the reflected light and scattered light, transmitted light and weaker; conversely, the lower the turbidity of the water, the weaker reflected light and scattered light, the stronger the transmitted light. 因此,测定散射光与透射光强度变化,就可以测得水的浊度。 Thus, measuring the scattered light and transmitted light intensity changes, it can be measured to obtain the turbidity of the water.

[0003]目前实验室多使用光学仪器测量浊度。 [0003] There is currently a multi-laboratory turbidity measurements using optical instruments. 光学浊度测量仪按原理主要分三种类型:光透射型、光散射型和透射/散射比型(积分球浊度),其中光散射型性能稳定,应用最为广泛。 Optical haze meter according to the principles mainly three types: the light transmission type, light scattering and transmissive / scattering type ratio (integrating sphere turbidity), wherein the light-scattering type stabilizing properties, the most widely used. 通过测定90度位置散射光强度,确定样品浊度值。 90 by determining the position of the scattered light intensity, turbidity of the sample values ​​is determined. 国际现行标准IS07027 (90° ±2.5°散射光)和USEPA180.1 (90° ±30°散射光)均采用此种方法。 Current international standards IS07027 (90 ° ± 2.5 ° scattered light) and USEPA180.1 (90 ° ± 30 ° scattered light) are used in this method.

[0004] 当前国内外厂商已经开发出多种型号的实验室台式、野外便携手持式和工业现场在线监测浊度仪,广泛应用于实验室检测、饮用水处理、工业过程和产品生产、锅炉用水、污水处理、环保监测等领域。 [0004] The current domestic and foreign manufacturers have developed a variety of models of laboratory bench, handheld and portable field industrial site on-line monitoring turbidity meter is widely used in laboratory tests, drinking water treatment, industrial process and production, boiler water , sewage treatment, environmental monitoring and other fields. 然而现有技术多为室内或浅水使用,工作水深一般几十米到上百米,且需要外部电源或续航能力有限。 However, the prior art mostly indoors or shallow water use, water depth typically hundreds of meters to tens of meters, and require an external power source or a limited endurance. 难以满足海洋监测对传感器较高的耐压、耐高盐度腐蚀能力和较高精度要求,且海上调查存在长期连续监测仪器供电、原位数据获取等诸多问题。 Difficult to meet the marine monitoring sensors for high pressure and high corrosion resistance to salinity and high precision, and there is a long-term continuous monitoring instruments powered offshore surveys, in-situ data acquisition and many other issues.

发明内容 SUMMARY

[0005] 为解决现有技术的缺陷,本发明提供一种高精度海洋原位浊度监测仪,采用耐海水腐蚀材料外壳,调制解调微弱电流信号放大系统和低功耗设计,一节电池工作3个月以上,具有便携式自存储和实时传输功能,可实现海洋、深水湖泊等多种水体浊度的船载垂直剖面调查和水平拖曳测定,并可集成到多参数系统、海洋浮标/潜标、海底观测网等第三方平台进行长期原位监测。 [0005] To solve the disadvantages of the prior art, the present invention provides a high precision marine situ turbidity monitor, using sea water resistant material housing, modem weak current signal amplification system design and low power consumption, a battery for three months or more, from a portable storage and real-time transfer function, can be realized more water turbidity ocean, lakes, deep water surveys onboard vertical and horizontal cross-section measuring boxes, can be integrated into the multi-parameter system, ocean buoys / latent standard, seafloor Observatory network and other third-party platform for long-term in situ monitoring.

[0006] 为解决上述问题,本发明采用如下技术方案:一种高精度海洋原位浊度监测仪,其特征在于,包括以下部分: [0006] In order to solve the above problems, the present invention adopts the following technical solutions: A sea-situ precision turbidity monitor, characterized by comprising the following parts:

[0007] (I)红外激发光源,所述红外激发光源以45°角照射水样,由脉冲电流驱动周期性发光; [0007] (I) an infrared excitation source, an infrared excitation light source to the illumination watery 45 ° angle, driven by the pulse current periodically emit light;

[0008] (2)光学接收系统,所述光学接收系统由收光挡板、红外滤光片和光电感应器组成,与激发光源呈90°角,用于接收入射散射光; [0008] (2) an optical receiver system, the optical receiver system is received by the light baffle, infrared filter composition and photoelectric sensors, and an excitation light source angle of 90 °, for receiving scattered light is incident;

[0009] (3)电源管理模块,所述电源管理模块用于整个系统电源管理,实现脉冲激发光源驱动,并为仪器信号采集、转换、调理、储存、通讯功能的实现提供电源; [0009] (3) a power management module, the power management module for the entire system power management, pulsed excitation light source driving, and the instrument signal acquisition, conversion, conditioning, storage, supply of power to achieve the communication function;

[0010] (4)模拟电路模块,所述模拟电路模块采用激发光调制和开关检波同步解调微弱电流放大电路系统,实现微弱光电信号采集和调理,包括电流/电压转换、带通滤波、交流放大、开关滤波和低通滤波; [0010] (4) analog circuit block, the analog circuit block using an excitation light modulation and synchronous demodulation detection switch weak current amplifying circuit system, weak photoelectric signal acquisition and conditioning, comprising a current / voltage conversion, band pass filtering, AC amplifying, filtering and low pass filtering switch;

[0011] (5)数字电路模块,所述数字电路模块采用低功耗微处理器和外部电路优化设计,实现模拟信号对数字信号的转换、数据存储和通讯控制; [0011] (5) a digital circuit module, the digital circuit block and an external low-power microprocessor circuit optimization design of the analog signal into a digital signal, data storage and communication control;

[0012] (6)耐高压密封舱,所述耐高压密封舱使用POM工程塑料加工制成,底部连接六芯水密接插件进行通讯,耐压设计为30MPa,可承受0-3000m水深压力。 [0012] (6) high pressure sealed chamber, the high pressure capsule made of engineering plastics processing using POM, the bottom six connecting connectors for communication watertight core, is designed to pressure 30MPa, 0-3000m depth can withstand pressure.

[0013] 进一步,所述红外激发光源为直插式球形发光二极管(Light Emitting Diode,LED),峰值波长850nm-880nm,半强度角0 1/2 = 6°,光辐射强度80mW/sr。 [0013] Further, the excitation light source is an infrared light emitting diode inline spherical (Light Emitting Diode, LED), a peak wavelength of 850nm-880nm, intensity half-angle 0 1/2 = 6 °, light radiation intensity 80mW / sr.

[0014] 进一步,所述激发光源和光学接收系统采用光学透明环氧树脂胶灌封。 [0014] Further, the excitation light source and the optical receiver system using an optically clear epoxy potting.

[0015] 进一步,所述激发光源座和光学接收系统的收光挡板中间开孔,用于控制通过光强大小,可以选择合适的开孔大小,改变仪器的检测范围和灵敏度。 [0015] Further, receiving the excitation light source holder and the shutter opening intermediate optical receiving system for controlling the light power by a small, you can select the appropriate aperture size, and changing the sensitivity of the detection range of the instrument.

[0016] 进一步,系统具有正常工作模式和低功耗休眠模式两种状态,可以降低间断工作功耗。 [0016] Further, the system having a normal operating mode and a low power sleep mode two states, active power consumption may be reduced intermittently.

[0017] 进一步,内部具有原位数据存储功能,可连接电缆进行数据实时传输和水下自容式存储工作。 [0017] Further, the internal-situ data storage function, can be connected to a cable for data transfer and real-time self-contained underwater storage operation.

[0018] 进一步,内部可存储40万组以上数据。 [0018] Further, the interior may be more than 40 million units of data storage.

[0019] 本发明的有益效果是:采用耐海水腐蚀材料外壳和低功耗设计,一节电池工作3个月以上,检测精度高,具有便携式自存储和实时传输功能,可实现海洋、深水湖泊等多种水体浊度的船载垂直剖面调查和水平拖曳测定,并可集成到多参数系统、海洋浮标/潜标、海底观测网等第三方平台进行长期原位监测。 [0019] Advantageous effects of the invention are: the use of sea water resistant material housing and low-power design, a battery for three months or more, high precision, and a portable real-time transmission from the storage function can be realized ocean, deep lake and other water turbidity shipboard vertical profile investigation and determination of the level of drag, and can be integrated into third-party platform, multi-parameter systems, ocean buoys / buoy, seafloor Observatory network and other long-term in situ monitoring.

附图说明 BRIEF DESCRIPTION

[0020] 图1是本发明的机械结构剖面示意图; [0020] FIG. 1 is a mechanical schematic cross-sectional structure of the present invention;

[0021] 图2是本发明的外观尺寸示意图; [0021] FIG. 2 is a schematic diagram of the present invention, the apparent size;

[0022] 图3是本发明的性能标定曲线。 [0022] FIG. 3 is a calibration curve of the present invention performance.

[0023] 图1-3中,1.端盖,2.耐高压密封舱,3.水密接插件,4.光电感应器,5.红外滤光片,6.收光挡板,7.发光管座,8.红外LED光源,9.模拟电路模块,10.数字电路模块,11.电源管理模块,12.底盖,13.光学检测敏感区。 In [0023] FIG. 1-3, an end cap, 2 high pressure capsule, 3. watertight connector, four photoelectric sensors, 5. IR filter 6. Collection of light baffle 7. Luminescent stem, 8 infrared LED light source 9 analog circuit module 10 digital circuit module 11. power management module 12 bottom cover, 13. The optical detector sensitive area.

具体实施方式 detailed description

[0024] 下面结合附图对本发明作进一步说明。 [0024] The following drawings in conjunction with the present invention will be further described.

[0025] 如图1、图2所示一种高精度海洋原位浊度监测仪,整体结构为圆柱体形,长114mm,外径64mm,顶部为端盖I (包括激发光源和检测窗口),中间为耐高压密封舱2、底盖 [0025] As shown in FIG 1, the one shown in FIG. 2 in situ precision marine turbidity monitor, an overall configuration of cylindrical shape, 114mm long, 64mm outer diameter, a top end cap of I (including excitation source and a detector window), the intermediate chamber 2 is a high pressure seal, the bottom cover

12通过316螺栓与耐高压密封舱2连接,底部六芯水密接插件3用于电气通讯。 2 316 12 is connected through a high pressure seal bolts chamber, the bottom of the watertight connector 3 for a six-cell in electrical communication.

[0026] 检测窗口位于仪器顶部,如图1所示,端盖I顶部有两个互成90°角的圆形孔槽,分别安装红外激发光源和光学接收系统,所述光学接收系统由光电感应器4、红外滤光片5和收光挡板6组成,所述红外LED光源8,由发光管座7固定,端盖I底部有2个引线孔,光电感应器4和红外LED光源8分别通过两芯屏蔽导线与壳体内部电路板相连。 [0026] The detection window at the top of the instrument shown in Figure 1, the top cover has two mutually I a circular hole slits angle of 90 °, are mounted infrared excitation light source and an optical receiver system, the optical receiver system photoelectric 4 sensor, an infrared light receiving filter 5 and the shutter 6 composed of the infrared LED light source 8, a light emitting tube held by the holder 7, has two lead holes, the photoelectric sensors 4 and a bottom end cap infrared LED light source 8 I are respectively connected to the circuit board inside the shield and the housing through two lead core. 红外LED光源8产生光线经散射后,进入光学接收系统,经收光挡板6光阑控制和红外滤光片5选择性透过,最后由光电感应器4接收,实现光电信号转换。 After the infrared LED light source 8 generates light scattered into the optical receiving system, the light receiving shutter 6 via the diaphragm control and an infrared filter 5 selectively permeable, and finally received by the photoelectric sensors 4, to achieve a photoelectric conversion signal. 光学感应区13为可接收入射散射光的检测敏感区域,改变收光挡板6和发光管座7的开孔大小,可以改变激发光和有效散射光强度,光学检测敏感区13的大小随之变化,一定程度上可以影响仪器的检测范围和灵敏度。 The optical sensing region 13 to be incident on the received scattered light detector sensitive area, change the size of the light receiving shutter aperture 6 base 7 and the arc tube can be varied efficiently scattered light intensity excitation light, an optical detector 13 sensitive area size consequent changes that can affect the detection range and sensitivity of the instrument to some extent.

[0027] 模拟电路模块9通过3个六角铜柱连接到端盖I底部,并依此通过六角铜柱连接数字电路模块10和电源管理模块11,三块电路模块之间由板上接插件实现电路连接。 [0027] Analog circuit blocks 9 are connected by 3 to cover the bottom of the hexagon copper I, 11 and so, between three circuit board connector module is implemented by a digital circuit by a hexagon copper connector module 10 and power management module circuit. 光电感应器4通过两芯屏蔽线连接到模拟电路模块9,实现光电信号采集,红外激发光源8与电源管理模块11连接,驱动LED脉冲发光。 Photoelectric sensors 4 through a two-core shielded cable is connected to the analog circuit block 9, to achieve signal acquisition photoelectric, infrared excitation light source 8 connected to the power management module 11, drives the LED light emission pulse.

[0028] 所述耐高压密封舱2使用POM工程塑料加工制成,底部使用深海用水密接插件3连接到电源管理模块11,进行外部供电,并以RS-232通讯方式与PC机或数据采集系统连接获取实时数据;或通过水密接插件3连接水下电池进行自主工作,数据存储于内部FLASH芯片。 [0028] The use of high pressure capsule 2 made of engineering plastics POM, using deep water tight connector 3 is connected to the power management module 11, external power supply, and in communication with the RS-232 PC or bottom data acquisition system acquiring real-time data connection; 3 connected or autonomous underwater work cell through a watertight connector, the data stored in the internal FLASH chip.

[0029] 传感器输出为A/D信号值,需进行校准,将信号值与样品浊度建立关系。 [0029] The sensor output is A / D signal value needs to be adjusted, the turbidity of the sample signal value relationship. 如图3所示,经检测本发明的线性测量范围为0.01-200NTU, R2≥0.999。 As shown in FIG. 3, the linear measurement range of the present invention to detect 0.01-200NTU, R2≥0.999.

[0030] 显而易见,在不偏离本发明的真实精神和范围的前提下,在此描述的本发明可以有许多变化。 [0030] Obviously, without departing from the true spirit and scope of the present invention, the present invention described herein may have many variations. 因此,所有对于本领域技术人员来说显而易见的改变,都应包括在本权利要求书所涵盖的范围之内。 Therefore, all the skilled person obvious modifications, should be included within the scope of the present claims encompassed by the. 本发明所要求保护的范围仅由所述的权利要求书进行限定。 The present invention as claimed is only by the scope of the claims be limited.

Claims (7)

  1. 1.一种高精度海洋原位浊度监测仪,其特征在于,包括以下部分: (1)红外激发光源,所述红外激发光源以45°角照射水样,由脉冲电流驱动周期性发光; (2)光学接收系统,所述光学接收系统由收光挡板、红外滤光片和光电感应器组成,与激发光源呈90°角,用于接收入射散射光; (3)电源管理模块,所述电源管理模块用于整个系统电源管理,实现脉冲激发光源驱动,并为仪器信号采集、转换、调理、储存、通讯功能的实现提供电源; (4)模拟电路模块,所述模拟电路模块采用激发光调制和开关检波同步解调微弱电流放大电路系统,实现微弱光电信号采集和调理,包括电流/电压转换、带通滤波、交流放大、开关滤波和低通滤波; (5)数字电路模块,所述数字电路模块采用低功耗微处理器和外部电路优化设计,实现模拟信号对数字信号的转换、数据存储和通讯 A marine situ precision turbidity monitor, characterized by comprising the following parts: (1) an infrared excitation source, an infrared excitation light source to the illumination watery 45 ° angle, driven by the pulse current periodically emit light; (2) receiving optical system, the optical receiver system is received by the light baffle, infrared filter composition and photoelectric sensors, and an excitation light source angle of 90 °, for receiving scattered light is incident; (3) a power management module, the power-management module for the entire system power management, pulsed excitation light source driving, and the instrument signal acquisition, conversion, conditioning, storage, supply of power to achieve the communication function; (4) analog circuit block, the analog circuit modules modulating the excitation light and the detection switch circuit amplifying a weak current synchronous demodulation system, weak photoelectric signal acquisition and conditioning, comprising a current / voltage conversion, band pass filtering, AC amplifier, filtering and low pass filtering the switching; (5) the digital circuit module, the digital circuit module is a low-power microprocessor and an external circuit optimization design, analog signal into a digital signal, the data storage and communication 制; (6)耐高压密封舱,所述耐高压密封舱使用POM工程塑料加工制成,底部连接六芯水密接插件进行通讯,耐压设计为30MPa,可承受0-3000m水深压力。 System; (6) high pressure sealed chamber, the high pressure capsule made of engineering plastics processing using POM, the bottom six connecting connectors for communication watertight core, is designed to pressure 30MPa, 0-3000m depth can withstand pressure.
  2. 2.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:所述红外激发光源为直插式球形发光二极管(Light Emitting Diode, LED),峰值波长850nm-880nm,半强度角9 1/2 = 6°,光辐射强度80mW/sr。 A high precision according to claim situ marine turbidity monitor of claim 1, wherein: said excitation light source is an infrared light emitting diode inline spherical (Light Emitting Diode, LED), a peak wavelength of 850nm-880nm half-intensity angle 9 1/2 = 6 °, light radiation intensity 80mW / sr.
  3. 3.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:所述激发光源和光学接收系统采用光学透明环氧树脂胶灌封。 A high precision according to claim situ marine turbidity monitor of claim 1, wherein: said excitation light source and the optical receiver system using an optically clear epoxy potting.
  4. 4.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:所述激发光源座和光学接收系统的收光挡板中间开孔,用于控制通过光强大小,可以选择合适的开孔大小,改变仪器的检测范围和灵敏度。 A high precision according to claim situ turbidity monitor the ocean 1, wherein: said excitation light receiving shutter opening intermediate the light source holder and an optical receiving system for controlling the light levels by , you can select the appropriate aperture size, and changing the sensitivity of the detection range of the instrument.
  5. 5.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:具有正常工作模式和低功耗休眠模式两种状态,可以降低间断工作功耗。 A high precision according to claim situ marine turbidity monitor of claim 1, further comprising: a normal operating mode and a low power sleep mode two states, active power consumption may be reduced intermittently.
  6. 6.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:内部具有原位数据存储功能,可连接电缆进行数据实时传输和水下自容式存储工作。 A high precision according to claim situ marine turbidity monitor of claim 1, wherein: the internal data storage capabilities with in-situ, real-time data can be connected to a cable transmission and self-contained underwater storage operation.
  7. 7.根据权利要求1所述的一种高精度海洋原位浊度监测仪,其特征在于:内部可存储40万组以上数据。 A high precision according to claim situ marine turbidity monitor of claim 1, wherein: the internal memory may be more than 40 million units of data.
CN 201310563156 2013-11-12 2013-11-12 A high precision turbidity monitor marine situ CN103645159B (en)

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CN106061046A (en) * 2016-08-15 2016-10-26 长江勘测规划设计研究有限责任公司 Underwater illumination lamp based on transmission turbidity measurement principle, and light adjustment method for underwater illumination lamp
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