CN211121390U - A wireless remote automatic monitoring device for underground water discharge in tunnels - Google Patents

Abstract

The utility model relates to a wireless remote automatic monitoring device for the discharge of underground water in a tunnel, which belongs to the technical field of tunnel drainage monitoring. The device includes a remote server, a front-end acquisition sensor, a control equipment box, a power supply module, a time-controlled switch and a fixed rod; the front-end acquisition sensor is used to collect the water level, velocity and flow of underground drainage in the tunnel, and is connected to the control equipment box to achieve long-term monitoring And automatically store the monitoring data; the control equipment box is connected to the remote server through the wireless network, and the monitoring data is transmitted to the remote server in real time for storage and analysis; Control the power on and off of the control equipment box; the fixing rod is used to fix the control equipment box. The utility model can realize remote automatic long-term monitoring of underground drainage, and provide data analysis and decision-making basis for managers.

Description

A wireless remote automatic monitoring device for underground water discharge in tunnels

technical field

The utility model belongs to the technical field of tunnel drainage monitoring, and relates to a wireless long-range automatic monitoring system for tunnel groundwater discharge.

Background technique

With the increasing number of urban tunnel projects, the contradiction between tunnel projects and groundwater and the ecological environment of the tunnel site has become increasingly prominent. Tunnel construction will change the original natural water balance and water circulation process in the tunnel site area to a great extent, making it a collection site for surface water and groundwater or a new drainage channel. The large amount of groundwater discharge will make the local groundwater level in the area continue to drop, resulting in shrinking wetlands. Therefore, it is of great engineering significance to monitor the groundwater discharge of tunnels in real time and understand the changes of groundwater discharge of tunnels in different construction periods to analyze the impact of tunnel construction on the groundwater environment.

At present, the monitoring of drainage flow cannot realize real-time remote monitoring, and data must be collected manually at the monitoring point, resulting in low work efficiency and large workload.

Therefore, in order to improve the work efficiency and the accuracy of the collected data, there is an urgent need for a device that can remotely monitor the groundwater drainage in a tunnel in real time.

Utility model content

In view of this, the purpose of the present utility model is to provide a wireless remote automatic monitoring device for tunnel groundwater discharge, which integrates management services, platform monitoring, network transmission, and front-end collection, realizes remote automatic monitoring of underground drainage, and can monitor the drainage of tunnels. Long-term monitoring of water level, flow rate, flow and other parameters and automatic storage of monitoring data.

To achieve the above object, the utility model provides the following technical solutions:

A wireless remote automatic monitoring device for underground water discharge in a tunnel, comprising a remote server, a front-end acquisition sensor, a control equipment box, a power module, a time-controlled switch and a fixed rod;

The front-end acquisition sensor is used to collect the water level, flow rate and flow of the underground drainage of the tunnel, and is connected with the control equipment box to realize long-term monitoring and automatically store monitoring data;

The control equipment box is connected with a remote server through a wireless network, and the monitoring data is transmitted to the remote server in real time for storage and analysis;

The power module is connected with the control equipment box through a time-controlled switch, and the power supply of the control equipment box is controlled on/off by closing the time-controlled switch;

The fixing rod is used for fixing the control equipment box.

Further, the front-end acquisition sensors are divided into two categories according to the form of the tunnel drainage channel:

1) Pipeline drainage, the front-end acquisition sensor adopts ultrasonic pipeline flowmeter or electromagnetic flowmeter;

2) Channel-type drainage, the front-end acquisition sensor uses a combination of ultrasonic level gauge and Doppler open channel flowmeter to monitor.

Further, for the pipeline drainage, the ultrasonic pipeline flowmeter or the electromagnetic flowmeter is directly fixed on the drainage pipeline to collect the flow of the underground drainage of the tunnel.

Further, for the channel type drainage, the ultrasonic level gauge is installed on the bracket higher than the edge of the channel, and the Doppler open channel flow meter is installed on the bracket on the bottom of the water.

Further, for channel-type drainage, the bracket is L-shaped, one end is used to fix the front-end acquisition sensor, and the other end is fixed on the channel edge.

Further, the control equipment box is installed on a fixed rod, and the fixed rod is installed on the ground near the tunnel water outlet.

Further, the power supply module is powered by a battery to supply power for the operation of the control equipment box.

Further, the control equipment box includes a wireless communication module and a Doppler flow transmitter; the wireless communication module is used to communicate with a server to realize the transmission of monitoring data; the Doppler flow transmitter and the front end are collected The sensor is connected to convert the collected drainage flow into electrical signals, which is convenient for data transmission.

Further, the power module is installed inside the control equipment box to supply power to the wireless communication module and the Doppler flow transmitter.

Further, the remote server is also connected with a PC terminal or a mobile terminal, and the tunnel drainage flow is displayed online in real time through the device terminal.

The beneficial effect of the utility model is that: the utility model integrates management services, platform monitoring, network transmission and front-end collection, realizes remote automatic monitoring of underground drainage, and can perform long-term monitoring on parameters such as water level, flow rate, and flow rate of tunnel drainage and automatically Store monitoring data, and upload all data into the database to provide managers with data analysis and decision-making basis.

Other advantages, objects and features of the present invention will be set forth in the description that follows, and to the extent that will be apparent to those skilled in the art based on a study of the following, or may be Lessons are learned from the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings, wherein:

Fig. 1 is the overall structure diagram of the device of the utility model;

Fig. 2 is the installation schematic diagram of the device of the present invention applied to channel drainage;

3 is a schematic diagram of the installation of the device of the present invention applied to pipeline drainage;

Fig. 4 is the installation schematic diagram of the acoustic wave transmitter and the receiver during pipeline drainage monitoring;

Reference numerals: 1-control equipment box, 2-fixed rod, 3-support, 4-ultrasonic level gauge, 5-Doppler open channel flowmeter, 6-ultrasonic pipeline flowmeter or electromagnetic flowmeter.

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

Among them, the accompanying drawings are only used for exemplary description, and they are only schematic diagrams, not physical drawings, and should not be construed as restrictions on the present utility model; in order to better illustrate the embodiments of the present utility model, some parts of the accompanying drawings may have Omission, enlargement or reduction, do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar symbols in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms "upper", "lower", "left", " The orientation or positional relationship indicated by "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation to the present invention, for those of ordinary skill in the art. , the specific meanings of the above terms can be understood according to specific situations.

Please refer to Figures 1 to 3. Figure 1 is the overall structure diagram of the wireless remote automatic monitoring device for underground water discharge in tunnels. .

The front-end acquisition sensor is used to collect the water level, velocity and flow of the underground drainage of the tunnel, and is connected to the control equipment box to realize long-term monitoring and automatically store the monitoring data. The control equipment box is connected to the remote server through the 4G network, and the monitoring data is transmitted to the remote server in real time for storage and analysis, so as to realize the timeliness and uninterruption of monitoring data collection, and the abundant data provides sufficient basis for managers to make decisions. The power module is connected to the control equipment box through a time-controlled switch, and the power supply of the control equipment box is controlled by closing the time-controlled switch. The fixing rod is used to hold the control equipment box.

The device can adopt different front-end data acquisition devices for different drainage types of the monitoring tunnel: for pipeline drainage, ultrasonic pipeline flowmeters and electromagnetic flowmeters can be used, as shown in Figure 3. For channel drainage, a combination of ultrasonic level gauge and Doppler open channel flowmeter can be used for monitoring, as shown in Figure 2. The device covers the common drainage section types of tunnels, and can be applied to different types of tunnel drainage flow monitoring.

Example 1: Channel Drainage Monitoring

Ultrasonic Doppler non-full pipe (channel) flowmeter is composed of transmitter/receiver integrated sensor, ultrasonic level gauge, signal processing and transmission electronic unit.

The sensor is installed in the pipe (channel) to emit ultrasonic wave f1, which is emitted from the underwater to the water surface at a certain angle. After encountering the suspended particles or bubbles in the water, the frequency is shifted and reflected to the transducer at the frequency of f2. This is the Doppler effect, and the difference between f2 and f1 is the Doppler frequency difference fd. Let the fluid velocity be v, the ultrasonic sound velocity be c, and the Doppler frequency shift fd is proportional to the fluid velocity v. There will be a large number of impurity particles and bubbles in the water, each reflected particle corresponds to a Doppler frequency shift fd, and its flow rate can be obtained by conversion, and the average flow rate of these large numbers of particles is also the average flow rate of the fluid. Through specific circuit design and software analysis, the frequency of the interference signal is separated, and the real echo is obtained. In actual use, the liquid is required to contain at least 100 ppm of suspended solids with a particle size greater than 50 microns.

The flowmeter first calculates the flow velocity V of the medium according to the Doppler principle, and then uses a high-precision two-wire ultrasonic level gauge to measure the liquid level height H of the pipeline. According to the known channel width, the transmitter can calculate the water flow. The cross-sectional area S, the flow velocity value V can be automatically corrected according to the level of the liquid level, so as to obtain the accurate flow rate Q=S*V.

Example 2: Pipeline Drainage Monitoring

As shown in Figure 4, two acoustic wave transmitters (S _A and S _B ) and two acoustic wave receivers ( _RA and R _B ) are employed. Two sets of sound waves from the same sound source are transmitted between _SA and _RA and between _SB and _RB , respectively. They are installed along the duct at an angle θ to the duct (typically θ=45°). Since the sound waves traveling downstream are accelerated by the fluid and those traveling upstream are delayed, the time difference between them is proportional to the flow rate. You can also send a sinusoidal signal to measure the phase shift between two sets of sound waves or send a frequency signal to measure the frequency difference to measure the flow rate.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should The technical solutions are modified or equivalently replaced without departing from the purpose and scope of the technical solutions, and they should all be included in the scope of the claims of the present invention.

Claims (10)

1. A wireless remote automatic monitoring device for tunnel underground water discharge is characterized by comprising a remote server, a front-end acquisition sensor, a control equipment box, a power module, a time control switch and a fixed rod;

the front-end acquisition sensor is used for acquiring the water level, flow velocity and flow of underground drainage of the tunnel and is connected with the control equipment box, so that long-term monitoring is realized and monitoring data are automatically stored;

the control equipment box is connected with the remote server through a wireless network, and transmits the monitoring data to the remote server in real time for storage and analysis;

the power supply module is connected with the control equipment box through the time control switch, and the on-off of the power supply of the control equipment box is controlled through the closing of the time control switch;

the fixed rod is used for fixing the control equipment box.

2. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water according to claim 1, wherein the front-end acquisition sensors are divided into two types according to the form of tunnel drainage channels:

1) the pipeline type drainage is adopted, and an ultrasonic pipeline flowmeter or an electromagnetic flowmeter is adopted as a front-end acquisition sensor;

2) the channel type drainage is realized, and the front-end acquisition sensor is monitored by combining an ultrasonic liquid level meter and a Doppler open channel flow velocity meter.

3. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water as claimed in claim 2, wherein for the pipe drainage, an ultrasonic pipe flowmeter or an electromagnetic flowmeter is directly fixed on a drainage pipe to collect the flow amount of the tunnel underground drainage.

4. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water as claimed in claim 2, wherein for the channel drainage, the ultrasonic level meter is mounted on a bracket higher than the edge of the channel, and the Doppler open channel current meter is mounted on a bracket at the bottom of the water.

5. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water as claimed in claim 4, wherein for channel type drainage, the bracket is L type, one end is used for fixing the front end collecting sensor, and the other end is fixed on the channel edge.

6. The wireless remote automatic monitoring device for the discharge amount of tunnel groundwater as claimed in claim 1, wherein the control equipment box is installed on a fixing rod installed on the ground near the tunnel water outlet.

7. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water as claimed in claim 1, wherein the power module is powered by a storage battery to supply power for the operation of the control equipment box.

8. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water as claimed in claim 1, wherein the control equipment box comprises a wireless communication module and a Doppler flow transmitter; the wireless communication module is used for communicating with the server to realize the transmission of monitoring data; the Doppler flow transmitter is connected with the front-end acquisition sensor, and converts the acquired drainage flow into an electric signal, so that data transmission is facilitated.

9. The wireless remote automatic monitoring device for the discharge amount of tunnel groundwater according to claim 8, wherein the power supply module is installed inside the control equipment box and supplies power to the wireless communication module and the Doppler flow transmitter.

10. The wireless remote automatic monitoring device for the discharge amount of tunnel underground water according to claim 1, characterized in that the remote server is further connected with a PC terminal or a mobile terminal, and the tunnel drainage flow is displayed on line in real time through a device terminal.

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