CN218646408U

CN218646408U - Self-driven laser water level gauge based on LORA communication

Info

Publication number: CN218646408U
Application number: CN202222648224.6U
Authority: CN
Inventors: 蔡兴琴; 吴子满; 郭仕勇; 徐玉彬; 朱洪儒
Original assignee: Zhengzhou Starsea Technology Co ltd
Current assignee: Zhengzhou Starsea Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-03-17
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a based on LORA communication self-driven laser fluviograph, cylindrical housing lower extreme undergauge, the lower extreme is unsealed, the top is sealed, the undergauge department of cylindrical housing is provided with laser ranging sensor, laser ranging sensor is fixed to be set up on the laser fixed plate, laser fixed plate upper portion sets up main circuit board, main circuit board upper portion sets up the battery, battery upper portion sets up the antenna mounting panel, the LORA antenna is fixed to be set up on the antenna mounting panel, the laser fixed plate, connect into multilayer frame structure through the insulated column between main circuit board and the antenna mounting panel, the battery on main circuit board upper portion is fixed on the insulated column, laser ranging sensor is connected with main circuit board electricity, the battery is connected with main circuit board electricity, main circuit board is connected with LORA antenna electricity. The utility model discloses there is the battery inside, and LORA communication mode through the low-power consumption conveys data, can realize not needing external power source, is difficult for receiving external disturbance, long-term stable work.

Description

Self-driven laser water level gauge based on LORA communication

Technical Field

The utility model belongs to the technical field of wireless communication and laser water level meter technique and specifically relates to a communication self-driven laser water level meter based on LORA.

Background

After the water conservancy dam engineering is built for water storage, seepage phenomena are inevitably generated at positions such as a dam body due to the action of a water head, water forms a gradually-descending seepage water surface from upstream to downstream in the dam body, the seepage water surface is called a seepage surface, and the seepage surface only shows a curve on the cross section of the dam body and is generally called a seepage line. The height and the change of the infiltration surface in the dam body are closely related to the safety and the stability of the dam body. The method comprises the steps of firstly calculating and determining the position of a saturation line according to the section size of the earth dam, the upstream and downstream water levels and the physical and mechanical indexes of earth materials in the design of the earth dam of the hydraulic engineering, and then carrying out dam slope stability analysis calculation.

The infiltration line monitoring is that a corresponding number of pressure measuring pipes are arranged at an earth dam, a dam foundation or other positions of hydraulic engineering, the pressure measuring pipes are pipes with water permeable floral pipe sections arranged at the bottom ends, the water permeable floral pipe sections of the pressure measuring pipes are positioned below the infiltration line, seepage in soil permeates into the pressure measuring pipes through holes of the floral pipe sections, and the positions of the infiltration line are indirectly known by measuring the water level height in the pressure measuring pipes.

The early stage of the height measurement of the water level of the piezometric tubes is manual timing detection, and a depth measuring clock or an electric water level measuring device is used for detecting the height of the water level of the piezometric tubes, so that the method needs manual wind and rain unimpeded timing to measure the height of the water level of the piezometric tubes one by one on site, time and labor are wasted, time difference exists in the measurement of each piezometric tube, and the data deviation of the obtained wetting line is large.

The existing measuring means mainly adopts a throw-in type pressure sensor and an MCU measuring and collecting unit, the throw-in type pressure sensor is thrown into the water in a piezometric tube, and the water level of the piezometric tube is measured by the pressure change value generated by the change of the water level, the mode can realize remote automatic measurement, the water level in each piezometric tube can be obtained simultaneously, namely, the deviation of the measured infiltration line is very small, but the service life is short due to siltation, microorganism and other reasons, the water level can be distorted or invalid generally about two years, thereby causing the dam engineering to lose the safety monitoring, causing the potential safety hazard and needing to be replaced in time, meanwhile, the measurement is realized by adopting wired connection, the drop-in pressure sensor is connected with the MCU through a wired 4-core hydraulic cable, namely the MCU is required to supply power to the drop-in pressure sensor through a wire cable and transmit signals to complete water level pressure detection, the MCU is connected with the central machine room through a cable, the wire cables are usually arranged on the ground surface or are buried in the soil shallowly, and damage is caused by various reasons, so that the drop-in pressure sensor in a certain or some manometers cannot work normally, and the drop-in pressure sensor needs to be maintained and replaced frequently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at the drawback of prior art and construction, provide one kind based on LORA communication self-driven laser water level gauge, inside has the battery, and LORA communication mode through the low-power consumption conveys data, can realize the wireless collection of low-power consumption self-driven, does not need external power source and signal connection, is difficult for receiving external disturbance, long-term stable work.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a assemble terminal and realize many piezometer pipe water level measurement based on LORA communication self-driven laser water level gauge + central LORA, LORA communication self-driven laser water level gauge includes cylindrical shell, laser range finding sensor, laser instrument fixed plate, main circuit board, battery, antenna mounting panel, LORA antenna and insulated column, cylindrical shell lower extreme undergauge, the lower extreme is unsealed, and the top is sealed, cylindrical shell's undergauge department is provided with laser range finding sensor, laser range finding sensor is fixed to be set up on the laser instrument fixed plate, laser instrument fixed plate upper portion sets up main circuit board, main circuit board upper portion sets up the battery, battery upper portion sets up the antenna mounting panel, the LORA antenna is fixed to be set up on the antenna mounting panel, connect into multilayer frame construction through the insulated column between laser instrument fixed plate, main circuit board and the antenna mounting panel, the battery on main circuit board upper portion is fixed on the insulated column, laser range finding sensor is connected with main circuit board electricity, the battery is connected with main circuit board electricity, main circuit board is connected with LORA antenna electricity.

Further, the external diameter of cylindrical shell is less than the internal diameter of piezometer pipe, so that the utility model discloses a laser water level gauge is placed in the piezometer pipe, carries out water level measurement.

Furthermore, the main circuit board is provided with an MCU and an LORA wireless module.

Further, the battery is a lithium thionyl chloride battery.

In some embodiments, be provided with the electric capacity parallelly connected with the battery on the main circuit board, the electric capacity is lithium ion capacitor, be used for the utility model discloses a laser water level meter provides great electric current when regularly starting, lets electric capacity and battery supply power simultaneously, plays the guard action to the battery, prolongs the life of battery.

Further, the LORA antenna is a high-gain rod LORA antenna.

Further, the isolation column is a metal isolation column or a high polymer material isolation column.

In cooperation with a self-driven laser water level gauge based on LORA communication, a laser reflector floating on the water surface needs to be thrown into a pressure measuring tube for reflecting laser emitted by a laser ranging sensor.

The utility model discloses a based on LORA communication self-driven laser water level gauge, its installation does, throws into earlier in the pressure-measuring tube and floats the laser reflector on the surface of water, then will the utility model discloses a laser water level gauge sets up in the mouth of pipe department of pressure-measuring tube, lets the transparent window on the laser water level gauge down, is provided with the tube cap on the mouth of pipe of pressure-measuring tube, seals the pressure-measuring tube.

The utility model has the advantages that:

1. the utility model discloses a based on LORA communication self-driven laser water level gauge adopts LORA wireless module and LORA antenna, has the low-power consumption, and transmission distance is far away, and thousands of LORA contacts can be connected to a LORA gateway of relevant control center, and it is easy to insert.

2. The utility model discloses a based on LORA communication self-driven laser water level gauge, built-in battery does not need external power supply, consequently need not drag the electric wire to avoided the electric wire fragile phenomenon that leads to the water level gauge can not normally work to take place.

3. The utility model discloses a based on LORA communication self-driven laser fluviograph, the battery adopts lithium thionyl chloride battery, and it is big to have the specific energy, and the battery life is long, and voltage stabilization and advantages such as operating temperature range width combine with the LORA communication technology of low-power consumption, let the utility model discloses a laser fluviograph can long-term steady operation, and its stable working life is more than 5 years.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a block diagram of the present invention.

Fig. 3 is a schematic view of the operation of the present invention.

In the figure: 100. a cylindrical housing; 200. a laser ranging sensor; 210. a laser transmitter; 220. a laser receiver; 300. a laser fixing plate; 400. a main circuit board; 410. MCU; 420. a LORA wireless module; 430. a capacitor; 500. a battery; 600. an antenna fixing plate; 700. an LORA antenna; 800. an isolation column; 900. a laser reflector.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1 and 2, in the self-driven laser water level gauge based on LORA communication, a laser ranging sensor 200 is fixedly arranged on a laser fixing plate 300, windows of a laser generator and a receiver of the laser ranging sensor 200 face each other, a lower layer stainless steel hexagonal isolation column 800 is arranged at an edge position of an upper surface of the laser fixing plate 300 by a triangle vertex, a top end of the hexagonal isolation column 800 is connected with a main circuit board 400, an MCU410 and an LORA wireless module 420 are arranged on the main circuit board 400, an upper layer stainless steel hexagonal isolation column 800 is also arranged at the triangle vertex on the main circuit board 400, a top end of the hexagonal isolation column 800 is arranged on an antenna mounting plate 600, a high-gain rod-shaped LORA antenna 700 is fixedly arranged at a center part of the antenna mounting plate 600, one of the upper layer stainless steel hexagonal isolation columns 800 is fixedly provided with a lithium thionyl chloride battery 500 in a bundling manner, the stable discharge voltage of the lithium thionyl chloride battery 500 is 3.3V, the general working temperature range is-40 ℃ to 60 ℃, the extreme working temperature range is-50 ℃ to 150 ℃, the lithium thionyl chloride battery 500 is electrically connected with the main circuit board 400, the laser ranging sensor 200 is electrically connected with the main circuit board 400, the main circuit board 400 is electrically connected with the high-gain rod-shaped LORA antenna 700, among the above components, the laser fixing plate 300, the main circuit board 400 and the antenna mounting plate 600 are circular and have the same diameter, the diameter of the laser fixing plate is less than the inner diameter of the cylindrical shell 100, the above components form a multi-layer frame structure and are arranged in the cylindrical shell 100, the lower end of the cylindrical shell 100 is provided with a reducing mouth, the laser fixing plate 300 is clamped at the reducing position, the lower end of the cylindrical shell 100 is not sealed, the laser emitted by the laser ranging sensor 200 and the laser reflected back are not blocked, the measured data are accurate, the upper end of the cylindrical shell 100 is sealed, with the inside original paper of protection, various parts in the multilayer frame structure all carry out water repellent.

In order to transmit wireless signals, the cylindrical housing 100 and the pipe cover of the orifice of the piezometric pipe are both made of electromagnetic wave-transmitting materials.

Meanwhile, a laser reflector 900 floating on the water surface needs to be thrown into the pressure measuring tube to reflect laser, for example, a non-absorbent foam board whose surface can diffusely reflect light.

As shown in fig. 3, the utility model discloses a based on LORA communication self-driven laser water level gauge, its theory of operation is: when the water level in the pressure measuring pipe needs to be measured, the MCU410 on the main circuit board 400 can control the laser emitter 210 on the laser ranging sensor 200 to emit laser beams and hit the laser reflector 900 floating on the water surface, the laser reflector 900 can reflect laser and be received by the laser receiver 220 on the laser ranging sensor 200, the distance from the buoy can be calculated by the MCU410 on the main circuit board 400 according to the time from laser emission to reception, so that the current water level value can be measured, and wireless signals are emitted out through the LORA antenna by 433MHZ frequency, the LORA gateway of the related control platform can receive signals, and display and early warning are completed on the control platform.

In particular, the pressure measuring pipe currently used is a galvanized pipe with a diameter of 50mm, and the inner diameter thereof is 50mm, so that the outer diameter of the cylindrical shell 100 is less than 50mm, such as a PVC hard pipe with a diameter of 40mm may be selected.

In some embodiments, the utility model discloses an among the laser water level gauge, be provided with the electric capacity 430 parallelly connected with battery 500 on main circuit board 400, electric capacity 430 is lithium ion capacitor, is used for the utility model discloses a laser water level gauge provides great electric current when regularly starting, lets electric capacity 430 and battery 500 supply power simultaneously, plays the guard action to battery 500, prolongs battery 500's life.

At present in the actual monitoring process to the piezometer pipe, the change of the water level in the piezometer pipe is along with the infiltration face change in the earth dam and changes, and change in the time shorter usually is not big, therefore the measurement of the water level in its piezometer pipe is not real-time supervision, but regular monitoring, for example once a day, twice a day, two days are so the utility model discloses a laser water level meter does not need to carry out work in real time in succession, only need regular monitoring can, and the utility model discloses a laser water level meter, from starting laser rangefinder sensor 200 to calculating the result and sending out only need several seconds through LOAR antenna 700 wireless, other times then get into sleep standby state, the effectual consumption that reduces battery 500 electric quantity to realize the long-term stable work of low-power consumption, battery 500 can support the utility model discloses a laser water level meter stable operation more than 5 years.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a communication self-driven laser water level gauge based on LORA which characterized in that: including cylindrical casing (100), laser range finding sensor (200), laser instrument fixed plate (300), main circuit board (400), battery (500), antenna mounting panel (600), LORA antenna (700) and separation post (800), cylindrical casing (100) lower extreme undergauge, the lower extreme is unsealed, and the upper end is sealed, the undergauge department of cylindrical casing (100) is provided with laser range finding sensor (200), laser range finding sensor (200) are fixed to be set up on laser instrument fixed plate (300), laser instrument fixed plate (300) upper portion sets up main circuit board (400), main circuit board (400) upper portion sets up battery (500), battery (500) upper portion sets up antenna mounting panel (600), LORA antenna (700) are fixed to be set up on antenna mounting panel (600), connect into multilayer frame structure through LORA post (800) between laser instrument fixed plate (300), main circuit board (400) and the antenna mounting panel (600), battery (500) on main circuit board (400) upper portion are fixed on post (800), laser range finding sensor (200) and main circuit board (400) electricity is connected, LORA antenna (400) and main circuit board (500) electricity are connected.

2. The LORA communication-based self-driven laser water level gauge according to claim 1, wherein: the outer diameter of the cylindrical shell (100) is smaller than the inner diameter of the piezometric tube.

3. The LORA communication-based self-driven laser water level gauge according to claim 1, wherein: the main circuit board (400) is provided with an MCU (410) and an LORA wireless module (420).

4. The LORA communication-based self-driven laser water level gauge of claim 1, wherein: the battery (500) is a lithium thionyl chloride battery.

5. The LORA communication-based self-driven laser water level gauge according to claim 1, wherein: the main circuit board (400) is provided with a capacitor (430) connected with the battery (500) in parallel, and the capacitor (430) is a lithium ion capacitor.

6. The LORA communication-based self-driven laser water level gauge according to claim 1, wherein: the LORA antenna (700) is a high gain rod LORA antenna.

7. The LORA communication-based self-driven laser water level gauge according to claim 1, wherein: the isolation column (800) is a metal isolation column or a high polymer material isolation column.

8. A LORA communication based self-driven laser water level gauge according to any one of claims 1-7, wherein: in cooperation with a self-driven laser water level gauge based on LORA communication, a laser reflector (900) floats on the water surface in the pressure measuring tube.