阅读说明：本技术 一种基于gnss和移动通信的洞穴地下水走向示踪计及方法 (Cave underground water trend tracer and method based on GNSS and mobile communication ) 是由 洪增林 杨建华 罗乾周 蔡明岸 张俊良 李益朝 唐力 于 2019-11-08 设计创作，主要内容包括：本发明提出一种基于GNSS和移动通信的洞穴地下水走向示踪计及方法,通过GNSS模块获取示踪计位置信息,由处理器转换并存储有用数据,最后通过移动通信模块将数据传输至远程服务器,实现示踪计轨迹的远程实时监测,从而完成洞穴地下水走向的测量。光控电源模块由电源和光控开关模块组成,有光时电源对示踪计供电,黑暗时停止对示踪计供电,提高示踪计的续航时长。示踪计采用球形外壳提高其在地下水流中的通过性能,采用无线充电提高其防水性能。本发明体积小,成本低,续航时间长,易操作,具有非常广阔的应用前景。(The invention provides a GNSS and mobile communication based cave underground water trend tracer and method. The light-operated power supply module comprises a power supply and a light-operated switch module, the power supply supplies power to the tracer meter when light exists, the power supply to the tracer meter is stopped when the light exists, and the duration of the tracer meter is prolonged. The tracer adopts spherical shell to improve its trafficability characteristic in the groundwater flow, adopts wireless charging to improve its waterproof performance. The invention has the advantages of small volume, low cost, long endurance time, easy operation and very wide application prospect.)

1. The utility model provides a cave groundwater trend tracer based on GNSS and mobile communication which characterized in that: the device comprises a microprocessor, a light-operated power supply module, a GNSS module and a mobile communication module;

the microprocessor controls the whole system to run coordinately, and performs serial communication and data processing and storage;

the light-operated power supply module comprises a power supply and a light-operated switch module; the light-operated switch module detects the brightness of the environment light, when the brightness of the environment light is larger than a set threshold value, the power supply supplies power to the whole system, otherwise, the power supply stops supplying power to the whole system;

when the power supply supplies power to the whole system, the GNSS module can receive satellite positioning signals and acquire positioning information of the tracer; the microprocessor stores the positioning information and the system state information; the mobile communication module can send out the positioning information in real time and receive a control instruction of an external monitoring platform.

2. The cavern underground water trend tracer based on GNSS and mobile communication of claim 1, wherein: the set threshold value of the light-operated switch module adopts a formula

3. The GNSS and mobile communication based cavern underground water trend tracer of claim 1 or 2, wherein: the tracer meter adopts a spherical shell, the photosensitive resistors in the GNSS module antenna, the mobile communication module antenna and the photoswitch module are fixed on the upper part of the inner side of the shell, and the circuit board and the power supply which are provided with the microprocessor and circuit parts in the other functional modules are fixed on the lower part of the inner side of the spherical shell, so that the gravity center of the tracer meter is positioned on the lower part of the tracer meter to form a tumbler structure; the part of the spherical shell where the photo-resistor is arranged is a transparent shell.

4. The cavern underground water trend tracer based on GNSS and mobile communication of claim 1, wherein: the power adopts wireless charging mode, avoids setting up the interface that charges on the tracer meter shell.

5. The method for detecting the underground water direction of the cave by using the tracer of claim 1, which is characterized in that: the method comprises the following steps:

step 1: in the current set region range, the environment brightness is acquired at the open-air positions of n caves by using a tracer meter, and according to a formula

step 2: putting a tracer into the upstream position of underground water of the cave, and acquiring initial position information by using a GNSS module;

and step 3: in the measuring process, the tracer floats on the water surface and moves along with water flow, when the light-operated switch module detects that the ambient light brightness is greater than a set threshold value, the power supply supplies power to the whole system, the GNSS module searches for satellite positioning signals, and the mobile communication module searches for mobile communication signals; after the mobile communication signal is searched, sending the state information of the tracer meter and the satellite positioning information to a monitoring platform;

and 4, step 4: and when the monitoring platform finds that the tracer continuously sends the positioning information and the position is basically unchanged, the tracer is recovered according to the final position information.

Technical Field

The invention relates to the technical field of cave detection, in particular to a cave underground water trend tracer and method based on GNSS and mobile communication.

Background

At present, a tracer method is mainly adopted for detecting the trend of underground water in hydrogeology, even if an artificial tracer is put on the upstream of water flow, the tracer can disperse along with the difference of the direction of the water flow, then the tracer is monitored on the downstream of a putting point, and the direction and the source of the underground water are judged through the color change and the concentration change of the tracer. Frequently used tracers are fluorescein, floaters and salts.

In view of the current research situation, the traditional tracer method detects the downstream of a feeding point by blindly arranging monitoring points, the positions of the arrangement points are estimated, and the arrival time and the concentration of a tracer are unknown. The tracing method adopting blind position detection has the problems of high test cost, high labor intensity, long sampling time, long sample holding time, easy pollution during sampling and the like, is difficult to track the position of a tracer in real time, and even can not detect the direction of the tracer sometimes.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a cave underground water trend tracer and method based on GNSS and mobile communication, and the method has the characteristics of simple operation, convenient recovery, economy, environmental protection, small volume, long endurance time and the like.

The technical scheme of the invention is as follows:

the cave groundwater trend tracer based on GNSS and mobile communication is characterized in that: the device comprises a microprocessor, a light-operated power supply module, a GNSS module and a mobile communication module;

the microprocessor controls the whole system to run coordinately, and performs serial communication and data processing and storage;

the light-operated power supply module comprises a power supply and a light-operated switch module; the light-operated switch module detects the brightness of the environment light, when the brightness of the environment light is larger than a set threshold value, the power supply supplies power to the whole system, otherwise, the power supply stops supplying power to the whole system;

when the power supply supplies power to the whole system, the GNSS module can receive satellite positioning signals and acquire positioning information of the tracer; the microprocessor stores the positioning information and the system state information; the mobile communication module can send out the positioning information in real time and receive a control instruction of an external monitoring platform.

In a further preferred aspect, the cavern groundwater trend tracer based on GNSS and mobile communication is characterized in that: the set threshold value of the light-operated switch module adopts a formula

Determining; wherein n is the number of the sites for collecting the brightness of the open air position of the cave in the current set region range; l is_iAmbient brightness values collected for the i-th open-air cave location.

In a further preferred aspect, the cavern groundwater trend tracer based on GNSS and mobile communication is characterized in that: the tracer meter adopts a spherical shell, the photosensitive resistors in the GNSS module antenna, the mobile communication module antenna and the photoswitch module are fixed on the upper part of the inner side of the shell, and the circuit board and the power supply which are provided with the microprocessor and circuit parts in the other functional modules are fixed on the lower part of the inner side of the spherical shell, so that the gravity center of the tracer meter is positioned on the lower part of the tracer meter to form a tumbler structure; the part of the spherical shell where the photo-resistor is arranged is a transparent shell.

In a further preferred aspect, the cavern groundwater trend tracer based on GNSS and mobile communication is characterized in that: the power adopts wireless charging mode, avoids setting up the interface that charges on the tracer meter shell.

The method for detecting the direction of underground water in the cave by using the tracer is characterized by comprising the following steps: the method comprises the following steps:

step 1: in the current set region range, the environment brightness is acquired at the open-air positions of n caves by using a tracer meter, and according to a formulaDetermining a set threshold for a photoswitch module, where L_iThe ambient brightness value is collected at the i-th open-air position of the cave;

step 2: putting a tracer into the upstream position of underground water of the cave, and acquiring initial position information by using a GNSS module;

and step 3: in the measuring process, the tracer floats on the water surface and moves along with water flow, when the light-operated switch module detects that the ambient light brightness is greater than a set threshold value, the power supply supplies power to the whole system, the GNSS module searches for satellite positioning signals, and the mobile communication module searches for mobile communication signals; after the mobile communication signal is searched, sending the state information of the tracer meter and the satellite positioning information to a monitoring platform;

and 4, step 4: and when the monitoring platform finds that the tracer continuously sends the positioning information and the position is basically unchanged, the tracer is recovered according to the final position information.

Advantageous effects

Compared with the prior monitoring technology, the cavern underground water trend tracer based on the GNSS/mobile communication provided by the invention has the following advantages:

1. the tracing process is completed in real time by means of automatic equipment, tracing information is directly uploaded to a cloud server side, and convenience and rapidness are achieved;

2. compared with the prior art, a large amount of labor is consumed for detection, the tracing equipment adopts a remote monitoring mode of autonomous positioning and real-time transmission, the autonomy is strong, the positioning precision is high, the real-time performance is strong, the experimental equipment can be repeatedly used, and the experimental cost is low;

3. the remote monitoring platform can display the tracing track on the map in real time, and compared with the traditional method, the direction of underground water of the cave is visually reflected visually.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention. The sequence numbers in the figures illustrate:

1 is an integrated circuit board, which comprises a microprocessor and other electronic elements; 2 is a power supply; 3 is a counterweight cabin; 4 is a wireless charging coil; 5 is GNSS antenna; 6 is a photoresistor; 7 is a mobile communication antenna; 8 is a shell;

FIG. 2 is an algorithmic flow diagram of an embodiment of the present invention;

fig. 3 is a system architecture of a tracer meter.

Detailed Description

The following detailed description of embodiments of the invention is intended to be illustrative, and not to be construed as limiting the invention.

As shown in fig. 1, the cavern groundwater trend tracer based on GNSS and mobile communication in this embodiment includes a microprocessor, a light-operated power supply module, a GNSS module, and a mobile communication module.

The microprocessor controls the whole system to run coordinately, and performs serial communication, processing and data storage.

The light-operated power supply module comprises a power supply and a light-operated switch module; the light-operated switch module detects the ambient light brightness and controls the power supply of the whole system by setting an ambient light excitation threshold value. And when the ambient light brightness is greater than the set threshold value, the power supply supplies power to the whole system, otherwise, the power supply stops supplying power to the whole system.

The set threshold value of the light-operated switch module adopts a formulaDetermining; wherein n is the number of the sites for collecting the brightness of the open air position of the cave in the current set region range; l is_iAmbient brightness values collected for the i-th open-air cave location.

The GNSS module is used for receiving satellite positioning signals and acquiring positioning information of the tracer;

the mobile communication module is used for communication between the tracer meter and the monitoring platform, the tracer meter can send positioning information and state information to the monitoring platform, and the monitoring platform can send a control command to configure various parameters of the tracer meter.

When the power supply supplies power to the whole system, the GNSS module can receive satellite positioning signals and acquire positioning information of the tracer; the microprocessor stores the positioning information and the system state information; the mobile communication module can send out the positioning information in real time and receive a control instruction of an external monitoring platform.

The tracer adopts spherical shell, and microprocessor, light-operated power module, GNSS module and mobile communication module all install in spherical sealed housing, adopt spherical shell in order to improve the trafficability characteristic of tracer in the groundwater flow. The power adopts wireless charging mode, avoids setting up the interface that charges on the tracer meter shell, improves the waterproof performance of tracer meter in groundwater rivers.

The photoresistors in the GNSS module antenna, the mobile communication module antenna and the photoswitch module are fixed on the upper portion of the inner side of the shell, the circuit board and the power supply which are provided with the microprocessor and circuit portions in the rest functional modules are fixed on the lower portion of the inner side of the spherical shell, and a counterweight can be additionally arranged to enable the gravity center of the tracing meter to be located on the lower portion of the tracing meter, so that a tumbler structure is formed, and the tracing meter is prevented from being overturned to influence signal strength. Meanwhile, the floating state of the tracer meter can be controlled by adjusting the balance weight. Since the light dependent resistor is to collect ambient light, at least the part of the spherical shell where the light dependent resistor is arranged is a transparent shell.

As shown in FIG. 2, the method for detecting the trend of the underground water in the cave by using the tracer comprises the following steps:

step 1:in the current set region range, the environment brightness is acquired at the open-air positions of n caves by using a tracer meter, and according to a formulaDetermining a set threshold for a photoswitch module, where L_iThe ambient brightness value is collected at the i-th open-air position of the cave;

step 2: putting a tracer into the upstream position of underground water of the cave, and acquiring initial position information by using a GNSS module;

and step 3: in the measuring process, the tracer floats on the water surface and moves along with water flow, when the tracer is located in an open position, the ambient brightness exceeds an excitation threshold value of the photoresistor, the power supply supplies power to the whole system, the GNSS module searches for satellite positioning signals, and the mobile communication module searches for mobile communication signals; after the mobile communication signal is searched, sending the state information of the tracer meter and the satellite positioning information to a monitoring platform; if the satellite positioning signal is not good, only tracer status information is sent. When the tracer meter is in a dark environment, the ambient brightness is lower than the threshold value of the photoresistor, and the power supply stops supplying power to the tracer meter, so that the duration of the tracer meter is prolonged.

And 4, step 4: the monitoring platform receives and records the positioning information and draws the motion track of the tracer in real time; and when the monitoring platform finds that the tracer continuously sends the positioning information and the position is basically unchanged, the tracer is recovered according to the final position information.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.