SELF-POWERED, WIRELESS REAL-TIME MONITORING, MULTI-PARAMETER FLUORESCENT TRACER SYSTEM AND METHOD
BACKGROUND
Technical Field
The present invention relates to the technical fields of hydrogeology, hydrology and water resources engineering, groundwater science and engineering, environmental science and engineering, water resources and environmental engineering, engineering geology, and the like, and particularly, to a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system and method.
Related Art
At present, a quantitative fluorescent tracer experiment method is widely applied to fields of hydrogeology, karst geology, hydrology and water resources engineering, groundwater science and engineering, environmental science and engineering, water resources and environmental engineering, engineering geology, and the like, and is one of the important tools for studying groundwater migration, sources of pollution, reservoir leakage, and karst conduit morphology.
In particular, the quantitative fluorescent tracer experiment method is applied to the research direction of karstology. The total area of karst regions in China is approximately 3.44 million square kilometers. In addition, due to climate and tectonic effects, karst landforms, such as underground rivers, conduits, sinkholes, and karst trenches, are very likely to be formed. It is difficult to discover underground rivers and conduits that are below the terrain surface, resulting in a huge safety risk during underground construction such as tunnel excavation and limestone mining. Severe property losses and severe casualties may be caused.
The quantitative fluorescent tracer experiment provides an effective means for studying karst conduit flows and features of conduit structures. The existing fluorescent tracer system used in the field has many shortcomings and defects such as a short battery life, undiversified collected parameters, inconvenience in reading data on site, and a non-objective calculation result. In addition, the traditional fluorescent tracer system cannot obtain a flow capacity of a water body.
In summary, the existing fluorescent tracer system used in the field still lacks an effective solution to the problem about how to collect a plurality of parameters and implement continuous self-powering.
SUMMARY
To resolve the shortcomings of the prior art, the present invention provides a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system. The system may be mounted and disposed in any water flowing region, to implement unmanned real-time monitoring of a plurality of parameters such as a velocity, a water level, and a fluorescent tracer concentration, and remote, wireless data transmission.
The self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system includes:
a multi-parameter test probe, configured to collect data including at least a water level of a water body and a fluorescein concentration in the water body, and transmit the collected data to a control unit; and
an intelligent hydraulic, direct-current charging unit, including a rotary impeller and a generator that are connected to each other, where the rotary impeller is actuated by using a water flow to rotate, and the generator can transform mechanical energy generated by the water flow into electrical energy; and
the control unit, including a data recording module, a cellular data communication module, and a remote instruction control module, the data recording module calculating a water flow velocity by monitoring a rotational speed of the rotary impeller in the intelligent hydraulic, direct-current charging unit, where
the control unit transmits the data including the fluorescein concentration, the water level of the water body, and the water flow velocity to a remote terminal by using a communication module and the remote instruction control module; and the remote terminal performs fitting correction by using the water level of the water body and the water flow velocity to calculate a dynamic flow capacity of the water body.
Further, a mainboard, a display screen, a storage battery, a cellular data transmit antenna, a waterproof charging interface and a waterproof multi-parameter test probe interface are disposed in the control unit; and the remote instruction control module, the cellular data communication module, and the data recording module are disposed on the mainboard.
Further, the intelligent hydraulic, direct-current charging unit further includes a voltage stabilizing module, and the generator transforms the mechanical energy generated by the water flow into the electrical energy, and outputs a stable voltage by using the voltage stabilizing module.
Further, external interfaces of both the intelligent hydraulic, direct-current charging unit and the control unit are waterproof interfaces.
Further, the intelligent hydraulic, direct-current charging unit includes a velocity measurement module, a photoelectric rotational speed sensor is built in the velocity measurement module, the photoelectric rotational speed sensor is connected to a controller, the photoelectric rotational speed sensor measures the rotational speed of the rotary impeller, and an internal controller of the velocity measurement module pre-stores an impeller's rotational speed-water body's velocity correction formula, and directly outputs instantaneous velocity data of the water body.
Further, electrical energy outputted by the intelligent hydraulic, direct-current charging unit is used for supplying power to the control unit, or charging a power supply.
A measurement method of a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system includes:
collecting data including at least a water level of a water body and a fluorescein concentration in the water body by using a multi-parameter test probe; obtaining a water flow velocity by monitoring a rotational speed of a rotary impeller in an intelligent hydraulic, direct-current charging unit; performing fitting correction with reference to the water flow velocity and the water level of the water body, to calculate a dynamic water capacity of the water body; and calculating a total recovered mass of a tracer of a measurement cross-section within a specified time according to a fluorescent tracer concentration, a water level and a velocity of a groundwater outlet at a point at a moment.
Further, a total recovered mass Mt of the fluorescent tracer at a moment t is:
Mt=fo C(t)Q(t)dt (1)
where in the formula (1), C is a fluorescent tracer concentration, t is a sample collection time, and Q is a flow capacity of a measured water body.
Further, Q(t) = f (h, v) (2)
where h and v are the water level and the velocity of the groundwater outlet at a point at a moment, t is a sample collection time, and all the parameters above can be remotely obtained online.
Before a fluorescent tracer content is measured, a flow capacity of a target water body is first controlled, that is, a plurality of sets of known flow capacities Q1, Q2... Qn are set, further, a flow capacity fitting correction function Q(t) = f(h, v) (formula 2) is obtained by obtaining information about velocities vi, v2... vn and water levels hi, h2... hn under
different flow capacities and by using a computer three-dimensional curved surface fitting method, so that in a formal measurement process, if a velocity v and a water level h are known, a water capacity Q can be calculated
Later, researchers may perform related scientific calculations by using parameters obtained in this system, for example, estimate conduit structure parameters such as an average retention time of unknown conduit flows, a volume of a conduit in water, a cross-sectional area of a conduit in water.
Compared with the prior art, the beneficial effects of the present invention are:
The present invention overcomes difficulties of conventional devices, that is, a short battery life, an undiversified type of collected parameters, inconvenience of reading data. All parameters of a fluorescent tracer experiment can be collected with only one device.
The present invention may be mounted and disposed in any water flowing region, to implement unmanned real-time monitoring of a plurality of parameters, namely, a velocity, a water level, and a fluorescent tracer concentration, and remote, wireless data transmission.
In the present invention, uninterruptible power supply is kept for all the devices by using the intelligent hydraulic, direct-current charging unit, the cellular data communication module uploads the velocity, the water level, turbidity, and conductivity of the water body and fluorescein in the water body obtained by the data recording module to a remote monitoring system, specifically, a network database of the remote monitoring system, or to a specified terminal (a PC or a mobile device), and a remote control module is disposed in the control unit to operate and control other modules.
In the present invention, the velocity, the water level, the turbidity, and the conductivity of the water body and the fluorescein concentration in the water body can be measured for a long term, and test data can be remotely checked by using a terminal device regularly or in real time. Real-time flow capacity parameters can be fitted, calculated and corrected by using the velocity and the water level to obtain the total recovered mass of a measurement cross-section of a river channel within a specified time.
According to one aspect of the present invention there is provided a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system, comprising:
a multi-parameter test probe, configured to collect data comprising at least a water level of a water body and a fluorescein concentration in the water body, and transmit the collected data to a control unit; and
an intelligent hydraulic, direct-current charging unit, comprising a rotary impeller and a generator that are connected to each other, wherein the rotary impeller is actuated by using a water flow to rotate, and the generator can transform mechanical energy generated by the water flow into electrical energy; and the control unit, comprising a data recording module, a cellular data communication module, and a remote instruction control module, wherein the control unit transmits the data comprising the fluorescein concentration, the water level of the water body, and the water flow velocity to a remote terminal by using the cellular data communication module and the remote instruction control module; and the remote terminal performs fitting correction by using the water level of the water body and the water flow velocity to calculate a dynamic flow capacity of the water body; a flow capacity of the target water is controlled, that is, a plurality of sets of known flow capacities Q1, Q2... Qn are set, further, a flow capacity fitting correction function Q(t)=f(h,v) is obtained by using information about water flow velocities vl, v2... vn and water levels hI, h2... hn that are under different flow capacities and that are obtained by a device and by using a computer three-dimensional curved surface fitting method; the intelligent hydraulic, direct-current charging unit comprises a velocity measurement module, a photoelectric rotational speed sensor is built in the velocity measurement module, the photoelectric rotational speed sensor is connected to a controller, the photoelectric rotational speed sensor measures the rotational speed of the rotary impeller, and an internal controller of the velocity measurement module pre-stores an impeller's rotational speed-water body's velocity correction formula, and directly outputs instantaneous velocity data of the water body; the instantaneous velocity data being transmitted to the control unit.
According to another aspect of the present invention there is provided a measurement method of a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system, comprising:
collecting data comprising at least a water level of a water body and a fluorescein concentration in the water body by using a multi-parameter test probe;
obtaining a water flow velocity by monitoring a rotational speed of a rotary impeller in an intelligent hydraulic, direct-current charging unit; performing fitting correction with reference to the water flow velocity and the water level of the water body, to calculate a dynamic water capacity of the water body; and calculating a total recovered mass of a tracer of a measurement cross-section within a specified time according to a fluorescent tracer concentration, a water level and a water flow velocity of a groundwater outlet at a point at a moment; the total recovered mass M of the fluorescent tracer at a moment t is:
Mt=f( C(t) Q(t)dt (1)
wherein in the formula (1), C is a fluorescent tracer concentration, t is a sample collection time, and Q is a flow capacity of a measured water body;
Q(t) = f(h, v) (2)
wherein h and v are the water level and the water flow velocity of the groundwater outlet at a point at a moment, t is a sample collection time, and the parameters of the water level, the water flow velocity and the sample collection time are remotely obtained online;
before a fluorescent tracer content is measured, a flow capacity of a target water body is first controlled, that is, a plurality of sets of known flow capacities Q1, Q2... Qn are set, further, a flow capacity fitting correction function Q (t) = f(h, v) is obtained by obtaining information about water flow velocities vi, V2... vn and water levels hi, h 2. . hn under
different flow capacities and by using a computer three-dimensional curved surface fitting method, so that in a formal measurement process, if a water flow velocity v and a water level h are known, a water capacity Q can be calculated.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of "including, but not limited to".
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings that constitute a part of this application are used to provide a further understanding of this application. Exemplary embodiments of this application and descriptions of the embodiments are used for describing this application, and do not constitute any inappropriate limitation to this application.
FIG. 1 is a diagram of an overall structure according to the present invention; and
FIG. 2 is a flowchart of data transmission according to the present invention.
DETAILED DESCRIPTION
It should be noted that the following detailed descriptions are all exemplary and are intended to provide a further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which this application belongs.
It should be noted that terms used herein are only for describing specific implementations and are not intended to limit exemplary implementations according to this application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise. In addition, it should further be understood that terms "include" and/or "comprise" used in this specification indicate that there are features, steps, operations, devices, components, and/or combinations thereof.
In a typical implementation of this application, a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system is provided, including a control unit, a small-sized intelligent hydraulic, direct-current charging unit, and a multi-parameter test probe. A mainboard is disposed in the control unit. The small-sized intelligent hydraulic, direct-current charging unit and the multi-parameter test probe are both connected to the mainboard through a cable. A data recording module and a cellular data communication module are disposed in the mainboard. The cellular communication module may implement remote data transmission by using a mobile data service of an operator. A remote instruction control module is further disposed in the mainboard. Flowing water in an experimental region may drive the small-sized intelligent hydraulic, direct-current charging unit to charge a storage battery in the control unit. The multi-parameter test probe transmits test data to the data recording module located on the mainboard through a cable, and transmits information such as test data and an operating state of an instrument to a user terminal by using the cellular data communication module located in the mainboard. A user may remotely control an operating state, an operating state of the self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system by using the remote instruction control module. The user may perform fitting correction to calculate a flow capacity of a water body by using the velocity and the water level for a real-time flow capacity to obtain a total recovered mass of a measurement cross-section of a river channel within a specified time.
Specifically, as shown in FIG. 1, the self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system includes a control unit 1, a small-sized intelligent hydraulic, direct-current charging unit 3, and a multi-parameter test probe 2. A mainboard 11, a display screen 12, a storage battery 13 (which may be a 12 V lead-acid storage battery), a cellular data transmit antenna 14, a waterproof charging interface 15, and a waterproof interface 16 of the multi-parameter test probe are disposed in the control unit. The mainboard is provided with a remote instruction control module 111, a cellular data communication module 112, a data recording module 113, a SIM card slot 114, and a memory card slot 115.
The control unit 1, made of an engineering plastic material that is shock-proof, moisture-proof, waterproof, and lightweight, includes two portions: a back casing and a top cover. The top cover is designed to be transparent for a convenient observation about each module displayed in an internal display screen 12 of the control unit and an operating state of the probe.
The small-sized intelligent hydraulic, direct-current charging unit 3 includes a small-sized generator 31, a voltage stabilizing module 32, a velocity measurement module 33, a three-proof outer casing 34, a rotary impeller 35, and a waterproof interface 36. The small-sized generator 31, the voltage stabilizing module 32, and the velocity measurement module 33 are disposed in the three-proof outer casing 34. The waterproof interface 36 is provided at the top of the three-proof outer casing. A rotary impeller 35 is disposed on a front end of a rotation shaft of the small-sized generator 31. An output end of the small-sized generator 31 is connected to the voltage stabilizing module 32. The voltage stabilizing module 32, and the velocity measurement module 33 are connected to the waterproof interface 36. The small-sized generator 31 is connected to the rotary impeller 35 in the small-sized intelligent hydraulic, direct-current charging unit. A water flow derives the rotary impeller 35 to rotate. The small-sized generator 31 may transform mechanical energy generated by the water flow into electrical energy, and outputs a stable voltage by using the voltage stabilizing module 32. A photoelectric rotational speed sensor is built in the velocity measurement module 33, the photoelectric rotational speed sensor is connected to a controller, the photoelectric rotational speed sensor may measure the rotational speed of the rotary impeller 35, and an internal controller of the velocity measurement module 33 pre-stores an impeller's rotational speed-water body's velocity correction formula, and directly outputs instantaneous velocity data of the water body. The waterproof interface 15 is connected to the waterproof interface 36 through a cable, so that instantaneous velocity parameters may be transmitted to the control unit, and the storage battery 13 may be charged.
The multi-parameter test probe 2 is connected to the waterproof interface 16 of multi-parameter test probe through a cable to transmit the height of water level, the fluorescein concentration in the water body, turbidity of the water body, and a conductivity test signal to the control unit 1.
As shown in FIG. 2, the data recording module 113 may analyze obtained current and voltage information of the small-sized intelligent hydraulic, direct-current charging unit 2 and signal data of the water level, the fluorescein concentration, the water turbidity, and the conductivity obtained by the multi-parameter test probe 2 and record them in a memory card in the memory card slot 115. The cellular data communication module 112 is connected to the SIM card slot 114 and the antenna 14 in the control unit 1, and can access, after the SIM card is inserted, the Internet by using a mobile network communication standard such as 2G, 2.5G, 3G, or 4G to implement a data transmission to a user terminal. The user may further establish a data connection to the cellular data communication module 112 by using a handheld terminal (a PC or a mobile phone), and sets various operating parameters by using the remote instruction control module 111.
A target water body is selected, the small-sized direct-current power generation apparatus 3 and the multi-parameter test probe 2 are disposed in the water body, the control unit 1 is disposed in a safety zone, and each cable is connected to enable the devices to operate.
The present invention provides a measurement method of a self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system. In this method, data including a velocity, a water level, turbidity, and conductivity of a water body and a fluorescein concentration in the water body may be collected and recorded in real time to help a researcher in the later period to estimate conduit structure parameters such as an average retention time of unknown conduit flows, a volume of a conduit in water, and a cross-sectional area of a conduit in water. The present invention provides effective technical solutions for the quantitative tracer study.
The present invention further provides a method for calculating a total recovered mass M of a fluorescent tracer at a moment t:
Mt=f C(t) Q (t)d t (1)
where in the formula (1), C is a fluorescent tracer concentration in a measured water body, Q is the measured water flow capacity, and t is a sample collection time.
At present, in the existing conventional methods, instant flow capacity values cannot be obtained, and a flow capacity is generally regarded as a constant. The present invention provides a method for calculating an instant flow capacity Q(t):
Q(t) = f (h, v) (2)
where h and v are a height of a water level and a velocity of a groundwater outlet at a point at a moment, t is a sample collection time, and all the parameters above can be remotely obtained online in this present invention.
Before a fluorescent tracer content is measured, a flow capacity of the target water is first controlled, that is, a plurality of sets of known flow capacities Q1, Q2... Qn are set, further, a flow capacity fitting correction function Q(t)= f(h, v) (formula 2) is obtained by using information about velocities vi, V2... v, and water levels hi, h2... h, that are under different flow capacities and that are obtained by a device and by using a computer three-dimensional curved surface fitting method. Therefore, in a formal measurement process, if a velocity v and a water level h are known, a water capacity Q can be calculated.
The self-powered, wireless real-time monitoring, multi-parameter fluorescent tracer system and a usage method thereof have a self-powering function to provide a sustained power supply for a whole set of devices, a multi-parameter test function to implement that one device is deployed to obtain experimental parameters required in a tracer experiment simultaneously, and a wireless real-time monitoring function, to implement a long-term unmanned data collection, thereby providing convenience for field worker and researchers in industries such as hydrogeology and engineering geology.
The foregoing descriptions are merely preferred embodiments of this application, but are not intended to limit this application. A person skilled in the art may make various alterations and variations to this application. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of this application shall fall within the protection scope of this application.