A surface runoff monitoring and early warning device and early warning method thereof

Abstract

The present invention discloses a surface runoff monitoring and early warning device, which relates to the field of runoff early warning. It includes a shell, a floating mechanism, an early warning mechanism, and a power supply mechanism; the early warning mechanism includes a first electrode, a second electrode, a third electrode, an early warning green light, an early warning yellow light, and an early warning red light; the power supply mechanism includes an impeller, a hydroelectric generator, and a fixed shaft; the positive pole of the hydroelectric generator is in contact with the inner wall of the shell through a conductive roller; the conductive roller is electrically connected to the first electrode, the second electrode, and the third electrode on the inner wall of the shell. In the present invention, the floating plate gradually moves upward under the action of buoyancy, so that the power supply mechanism contacts the early warning green light, the early warning yellow light, and the early warning red light of the early warning mechanism in turn, and the power supply mechanism displays green light, yellow light, and red light in turn, so that the staff can timely judge the water level status in the runoff. The present invention also relates to an early warning method of this surface runoff monitoring and early warning device.

Description

Technical Field

[0001] The invention relates to the field of runoff early warning, and more specifically to a surface runoff monitoring and early warning device. The invention also relates to an early warning method of the surface runoff monitoring and early warning device. Background Art

[0002] The precipitation in a river basin flows into the river network from the ground and underground, and the water flowing out of the outlet section of the river basin is called runoff. According to the flow mode, it can be divided into surface runoff and underground runoff. Surface runoff is further divided into slope flow and river channel flow. Precipitation flows through various surface river channels and then flows into the river network. Due to the large number of surface river channels, if the runoff conditions of the surface river channels cannot be monitored in time, timely basis cannot be provided for emergency rescue and dredging of the surface river channels. In addition, the runoff conditions in each surface river channel are different. The existing monitoring and early warning devices can only roughly judge the runoff conditions, and cannot accurately warn the runoff size in real time.

[0003] According to the Ministry of Water Resources' 2022 notice on issuing the "Technical Outline for Digital Twin River Basin Construction System (Trial)", it is necessary to further build a new water conservancy monitoring network, improve the relevant applications of new monitoring methods, enhance the dynamic perception capabilities of water conservancy management activities, and meet the needs of water conservancy business for data and information in terms of spatial scale, temporal frequency, etc.

[0004] Therefore, it is necessary to develop a surface runoff monitoring and early warning device. Summary of the invention

[0005] The first purpose of the present invention is to overcome the shortcomings of the above-mentioned background technology and provide a surface runoff monitoring and early warning device.

[0006] The second purpose of the present invention is to provide an early warning method for such a surface runoff monitoring and early warning device.

[0007] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: a surface runoff monitoring and early warning device, characterized in that: it includes a shell located on the surface river channel, a floating mechanism installed in the shell and capable of sliding up and down, an early warning mechanism installed on the shell, and a power supply mechanism installed on the floating mechanism to supply power to the early warning mechanism; the early warning mechanism includes a first electrode, a second electrode and a third electrode arranged at intervals from bottom to top on the inner wall of the shell, and an early warning green light, an early warning yellow light and an early warning red light arranged at intervals from bottom to top on the outer wall of the shell; the first electrode is electrically connected to the early warning green light, the second electrode is electrically connected to the early warning yellow light, and the third electrode is electrically connected to the early warning red light;

[0008] The power supply mechanism includes an impeller located at the back of the floating mechanism, a hydroelectric generator located on the floating mechanism and fixedly connected to the floating mechanism, and a fixed shaft connected to the impeller at one end and to the input end of the hydroelectric generator at the other end; the positive electrode of the hydroelectric generator is in contact with the inner wall of the shell through a conductive roller; the conductive roller is electrically connected to the first electrode, the second electrode and the third electrode in sequence when rotating from bottom to top on the inner wall of the shell;

[0009] The green warning light, the yellow warning light and the red warning light are connected in parallel to the negative pole of the hydroelectric generator.

[0010] In the above technical solution, a sliding groove is provided on the inner wall of the shell, and the floating mechanism is slidably connected to the sliding groove.

[0011] The above technical solution also includes a variable resistance mechanism and an adjustment mechanism. The variable resistance mechanism includes a conductive variable resistance rod fixed on a floating mechanism and a conductive sleeve mounted on the conductive variable resistance rod and slidable up and down; the positive pole of the hydroelectric generator is electrically connected to the upper end of the conductive variable resistance rod; the conductive sleeve is electrically connected to the conductive roller; the adjustment mechanism adjusts the variable resistance mechanism according to the flow rate of the water flow. The greater the flow rate of the water flow, the smaller the resistance of the variable resistance mechanism.

[0012] In the above technical solution, the adjustment mechanism includes a fixed seat fixedly connected to the fixed shaft, a circular ring located above the fixed seat and mounted on the fixed shaft and capable of sliding up and down, a push rod located inside the fixed seat and capable of sliding horizontally, and a wedge-shaped surface located inside the circular ring; the top of the push rod contacts the wedge-shaped surface; the height of the wedge-shaped surface close to the outer circle of the circular ring is lower than the height close to the inner circle of the circular ring; the bottom of the conductive sleeve is fixedly connected to the circular ring.

[0013] In the above technical solution, the push rod is connected to the fixed shaft through a spring.

[0014] In the above technical solution, a fixing rod is fixed on the top of the conductive variable resistance rod; a mounting frame is fixedly connected to the fixing rod; and the hydroelectric generator is fixed on the mounting frame.

[0015] In the above technical solution, a brush is rollingly connected to the lower surface of the conductive roller; the conductive roller is rotationally connected to the fixed rod; the brush is fixedly connected to the fixed rod; and the conductive sleeve is electrically connected to the brush.

[0016] In the above technical solution, a system module is also included, which includes a red light warning module, a yellow light warning module and a green light warning module. The red light warning module, the yellow light warning module and the green light warning module are all connected to the remote terminal through GPS. The red light warning module, the yellow light warning module and the green light warning module collect the brightness level of the warning mechanism.

[0017] In the above technical solution, the bottom of the shell is fixed in the surface river channel by a bracket; and the floating mechanism is a floating plate provided with a cavity.

[0018] In order to achieve the above first purpose, the technical solution of the present invention is: an early warning method of a surface runoff monitoring and early warning device, characterized in that it includes the following steps:

[0019] Step 1: Fix the shell in the surface river channel through the bracket. When the runoff in the surface river channel is normal, the water flow velocity in the surface river channel is normal, which drives the impeller to rotate at a low speed. The impeller drives the hydroelectric generator to work through the fixed shaft, converting mechanical energy into electrical energy. The hydroelectric generator energizes the conductive variable resistance rod, the conductive sleeve, the brush, the conductive roller, the first electrode and the early warning green light in turn, and finally the current flows into the negative pole of the hydroelectric generator to form a closed circuit; the early warning green light is powered on and lights up green, and the green light early warning module transmits the green light signal to the remote terminal through GPS;

[0020] Step 2: When the surface river runoff gradually increases and the water level rises, the water flow velocity in the surface river increases, pushing the impeller to rotate at an increased speed. Under the action of centrifugal force, the push rod slides in the horizontal direction to stretch the spring, and the push rod pushes the ring and the conductive sleeve to slide upward in turn. After the conductive sleeve slides upward, the conductive resistance length of the conductive variable resistance rod becomes shorter, the resistance becomes smaller, and the brightness of the warning green light increases. The green light warning module collects the brightness level and transmits the green light brightness level to the remote terminal through GPS, which initially warns of the increase in runoff;

[0021] Step 3: When the runoff increases, the water level of the surface river channel rises. Under the action of buoyancy, the floating plate begins to float up along the chute, and the power supply mechanism, conductive roller, variable resistance mechanism and adjustment mechanism on the floating plate also move up synchronously. After the conductive roller moves up, it contacts the second electrode, so that the warning yellow light is powered on and lights up yellow. The yellow light warning module transmits the yellow light signal to the remote terminal through GPS, warning that the runoff in the surface river channel has reached a moderately dangerous level;

[0022] Step 4: When the surface river runoff gradually increases and the water level rises, the water flow velocity in the surface river increases. The increase in flow velocity drives the impeller speed to increase. Under the action of centrifugal force, the push rod pushes the electric sleeve upward, and the brightness of the yellow warning light increases. The GPS transmits the brightness of the yellow light to the remote terminal;

[0023] Step 5: When the water level continues to rise and the float continues to float, the conductive roller contacts the third electrode, turning on the warning red light and lighting up red. The red light warning module collects information and transmits it to the remote terminal via GPS, warning the staff that the surface river channel runoff is highly dangerous and that timely dredging and rescue work is needed in the surface river channel.

[0024] Compared with the prior art, the present invention has the following advantages:

[0025] 1) The present invention gradually moves upwards by the floating plate under the action of buoyancy, so that the power supply mechanism contacts the warning green light, warning yellow light and warning red light of the warning mechanism in sequence, and the power supply mechanism displays green light, yellow light and red light in sequence, so that the staff can judge the water level status in the runoff in time.

[0026] 2) In the present invention, when the flow velocity of the water flow increases, the resistance of the variable resistance mechanism decreases, so that the brightness of the green light, yellow light and red light also increases accordingly, so that the staff can more accurately judge the flow velocity of the runoff, thereby providing an important basis for dredging and rescue of surface river runoff. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a cross-sectional view of the present invention.

[0029] Figure 3 It is a schematic diagram of the structures of the power supply mechanism, the variable resistance mechanism and the regulating mechanism.

[0030] Figure 4 It is a schematic diagram of the circuit structure of the present invention.

[0031] Figure 5 This is a connection diagram of the system module.

[0032] Among them, 1-surface river channel, 2-shell, 21-chute, 22-bracket, 3-floating mechanism, 32-cavity, 31-floating plate, 33-perforation, 4-warning mechanism, 411-first electrode, 412-warning green light, 421-second electrode, 422-warning yellow light, 431-third electrode, 432-warning red light, 5-power supply mechanism, 51-impeller, 52-hydroelectric generator, 53-fixed shaft, 6-guide Electric roller, 61-brush, 7-variable resistance mechanism, 71-conductive variable resistance rod, 72-conductive sleeve, 8-adjusting mechanism, 81-fixed seat, 82-ring, 821-movable groove, 83-push rod, 84-wedge surface, 85-spring, 54-fixed rod, 55-mounting frame, 9-system module, 91-red light warning module, 92-yellow light warning module, 93-green light warning module, 94-GPS, 95-remote terminal. DETAILED DESCRIPTION

[0033] The following is a detailed description of the implementation of the present invention in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention and are only given as examples. At the same time, the advantages of the present invention are made clearer and easier to understand through the description.

[0034] Referring to the attached drawings, it can be seen that: a surface runoff monitoring and early warning device is characterized in that: it includes a shell 2 located on a surface river channel 1, a floating mechanism 3 installed in the shell 2 and capable of sliding up and down, an early warning mechanism 4 installed on the shell 2, and a power supply mechanism 5 installed on the floating mechanism 3 and supplying power to the early warning mechanism 4; the early warning mechanism 4 includes a first electrode 411, a second electrode 421 and a third electrode 431 arranged at intervals from bottom to top on the inner wall of the shell 2, and an early warning green light 412, an early warning yellow light 422 and an early warning red light 432 arranged at intervals from bottom to top on the outer wall of the shell 2; the first electrode 411 is electrically connected to the early warning green light 412, the second electrode 421 is electrically connected to the early warning yellow light 422, and the third electrode 431 is electrically connected to the early warning red light 432;

[0035] The power supply mechanism 5 includes an impeller 51 located on the back of the floating mechanism 3, a hydroelectric generator 52 located on the floating mechanism 3 and fixedly connected to the floating mechanism 3, and a fixed shaft 53 with one end connected to the impeller 51 and the other end connected to the input end of the hydroelectric generator 52; the positive pole of the hydroelectric generator 52 is in contact with the inner wall of the shell 2 through the conductive roller 6; the conductive roller 6 is electrically connected to the first electrode 411, the second electrode 421 and the third electrode 431 in sequence when rotating from bottom to top on the inner wall of the shell 2; there is a through hole 33 between the floating mechanism 3 and the fixed shaft 53; when water flows in the surface river channel 1, the upper end of the water flow pushes the impeller 51 to rotate, and the impeller 51 drives the fixed shaft 53 and the shaft of the hydroelectric generator 52 to rotate in turn, so that the hydroelectric generator 52 works to generate electricity.

[0036] The green warning light 412 , the yellow warning light 422 and the red warning light 432 are connected in parallel to the negative pole of the hydroelectric generator 52 .

[0037] A sliding groove 21 is formed on the inner wall of the housing 2 , and the floating mechanism 3 is slidably connected to the sliding groove 21 .

[0038] It also includes a variable resistance mechanism 7 and an adjusting mechanism 8. The variable resistance mechanism 7 includes a conductive variable resistance rod 71 fixed on the floating mechanism 3 and a conductive sleeve 72 mounted on the conductive variable resistance rod 71 and slidable up and down, forming a simple sliding rheostat; the positive pole of the hydroelectric generator 52 is electrically connected to the upper end of the conductive variable resistance rod 71; the conductive sleeve 72 is electrically connected to the conductive roller 6; the adjusting mechanism 8 adjusts the variable resistance mechanism 7 according to the flow rate of the water flow, and the greater the flow rate of the water flow, the smaller the resistance of the variable resistance mechanism 7.

[0039] The adjusting mechanism 8 comprises a fixing seat 81 fixedly connected to the fixing shaft 53, a circular ring 82 located above the fixing seat 81 and mounted on the fixing shaft 53 and capable of sliding up and down, a push rod 83 located inside the fixing seat 81 and capable of sliding horizontally, and a wedge-shaped surface 84 located inside the circular ring 82; the top of the push rod 83 contacts the wedge-shaped surface 84; the height of the wedge-shaped surface 84 close to the outer circle of the circular ring 82 is lower than the height of the wedge-shaped surface 84 close to the inner circle of the circular ring 82; the bottom of the conductive sleeve 72 is fixedly connected to the circular ring 82; there is a movable groove 821 between the circular ring 82 and the fixing shaft 53; the greater the flow rate of the water flow, the greater the centrifugal force of the push rod 83, the greater the distance the conductive sleeve 72 slides upward, the smaller the resistance value of the resistor in the closed loop, and the greater the brightness displayed.

[0040] The push rod 83 is connected to the fixed shaft 53 via a spring 85 .

[0041] A fixing rod 54 is fixed on the top of the conductive variable resistance rod 71 ; a mounting frame 55 is fixedly connected to the fixing rod 54 ; and the hydroelectric generator 52 is fixed on the mounting frame 55 .

[0042] The lower surface of the conductive roller 6 is rollingly connected with a brush 61; the conductive roller 6 is rotationally connected to the fixed rod 54; the brush 61 is fixedly connected to the fixed rod 54; the conductive sleeve 72 is electrically connected to the brush 61; the conductive roller 6 is always in contact with the brush 61 to ensure good conductivity.

[0043] It also includes a system module 9, which includes a red light warning module 91, a yellow light warning module 92 and a green light warning module 93. The red light warning module 91, the yellow light warning module 92 and the green light warning module 93 are all connected to a remote terminal 95 via a GPS 94. The red light warning module 91, the yellow light warning module 92 and the green light warning module 93 collect the brightness level of the warning mechanism 4.

[0044] The bottom of the shell 2 is fixed in the surface river channel 1 through a bracket 22; the floating mechanism 3 is a floating plate 31 with a cavity 32, and the floating plate 31 is sufficient to drive the variable resistance mechanism 7 and the power supply mechanism 5 to move upward together under the buoyancy of the water.

[0045] A warning method for a surface runoff monitoring and warning device, characterized in that it comprises the following steps:

[0046] Step 1: Fix the housing 2 in the surface river channel 1 through the bracket 22. When the runoff in the surface river channel 1 is normal, the water flow velocity in the surface river channel 1 is normal, which drives the impeller 51 to rotate at a low speed. The impeller 51 drives the hydroelectric generator 52 to work through the fixed shaft 53, converting mechanical energy into electrical energy. The hydroelectric generator 52 sequentially energizes the conductive variable resistance rod 71, the conductive sleeve 72, the brush 61, the conductive roller 6, the first electrode 411 and the warning green light 412. Finally, the current flows into the negative pole of the hydroelectric generator 52 to form a closed circuit; the warning green light 412 is energized and lights up green, and the green light warning module 93 transmits the green light signal to the remote terminal 95 through the GPS 94;

[0047] Step 2: When the runoff of the surface river channel 1 gradually increases and the water level rises, the flow velocity of the water in the surface river channel 1 increases, pushing the impeller 51 to increase its rotation speed. Under the action of centrifugal force, the push rod 83 slides in the horizontal direction to stretch the spring 85, and the push rod 83 pushes the ring 82 and the conductive sleeve 72 to slide upward in turn. After the conductive sleeve 72 slides upward, the conductive resistance length of the conductive variable resistance rod 71 becomes shorter, the resistance becomes smaller, and the brightness of the warning green light 412 increases. The green light warning module 93 collects the brightness level and transmits the green light brightness level to the remote terminal 95 through the GPS 94, and preliminarily warns of the increase in runoff.

[0048] Step 3: When the runoff increases, the water level of the surface river channel 1 rises. Under the action of buoyancy, the floating plate 31 begins to float up along the chute 21. The power supply mechanism 5, the conductive roller 6, the variable resistance mechanism 7 and the regulating mechanism 8 on the floating plate 31 also move up synchronously. After the conductive roller 6 moves up, it contacts the second electrode 421, so that the warning yellow light 422 is powered on and lights up yellow. The yellow light warning module 92 transmits the yellow light signal to the remote terminal 95 through the GPS 94, warning that the runoff in the surface river channel 1 has reached a moderately dangerous level.

[0049] Step 4: When the runoff of the surface river channel 1 gradually increases and the water level rises, the flow velocity of the water in the surface river channel 1 increases, and the increase in flow velocity drives the impeller 51 to increase its rotation speed. Under the action of centrifugal force, the push rod 83 pushes the conductive sleeve 72 upward, and the brightness of the warning yellow light 422 increases. The GPS 94 transmits the brightness of the yellow light to the remote terminal 95;

[0050] Step 5: When the water level continues to rise and the float plate 31 continues to float, the conductive roller 6 contacts the third electrode 431, so that the warning red light 432 is powered on and lights up red. The red light warning module 91 collects information and transmits it to the remote terminal 95 via GPS 94, warning the staff that the runoff in the surface river channel 1 is highly dangerous and that it is necessary to promptly carry out dredging and rescue work in the runoff in the surface river channel 1.

[0051] Other parts not described belong to the prior art.

Claims

1. A surface runoff monitoring and early warning device, characterized in that: The invention comprises a shell (2) located on a river channel (1) on the ground, a floating mechanism (3) installed in the shell (2) and capable of sliding up and down, an early warning mechanism (4) installed on the shell (2), and a power supply mechanism (5) installed on the floating mechanism (3) and supplying power to the early warning mechanism (4); the early warning mechanism (4) comprises a first electrode (411), a second electrode (421) and a third electrode (431) arranged at intervals from bottom to top on the inner wall of the shell (2), and an early warning green light (412), an early warning yellow light (422) and an early warning red light (432) arranged at intervals from bottom to top on the outer wall of the shell (2); the first electrode (411) is electrically connected to the early warning green light (412), the second electrode (421) is electrically connected to the early warning yellow light (422), and the third electrode (431) is electrically connected to the early warning red light (432); The power supply mechanism (5) comprises an impeller (51) located on the back of the floating mechanism (3), a hydroelectric generator (52) located on the floating mechanism (3) and fixedly connected to the floating mechanism (3), and a fixed shaft (53) having one end connected to the impeller (51) and the other end connected to the input end of the hydroelectric generator (52); the positive electrode of the hydroelectric generator (52) is in contact with the inner wall of the housing (2) through a conductive roller (6); the conductive roller (6) is electrically connected to the first electrode (411), the second electrode (421) and the third electrode (431) in sequence when rotating from bottom to top on the inner wall of the housing (2); The green warning light (412), the yellow warning light (422) and the red warning light (432) are connected in parallel to the negative pole of the hydroelectric generator (52); It also comprises a variable resistance mechanism (7) and an adjusting mechanism (8), wherein the variable resistance mechanism (7) comprises a conductive variable resistance rod (71) fixed on the floating mechanism (3) and a conductive sleeve (72) sleeved on the conductive variable resistance rod (71) and capable of sliding up and down; the positive pole of the hydroelectric generator (52) is electrically connected to the upper end of the conductive variable resistance rod (71); the conductive sleeve (72) is electrically connected to the conductive roller (6); the adjusting mechanism (8) adjusts the variable resistance mechanism (7) according to the flow velocity of the water flow, and the greater the flow velocity of the water flow, the smaller the resistance of the variable resistance mechanism (7); The adjusting mechanism (8) comprises a fixing seat (81) fixedly connected to the fixing shaft (53), a circular ring (82) located above the fixing seat (81) and mounted on the fixing shaft (53) and capable of sliding up and down, a push rod (83) located inside the fixing seat (81) and capable of sliding horizontally, and a wedge-shaped surface (84) located inside the circular ring (82); the top of the push rod (83) contacts the wedge-shaped surface (84); the height of the wedge-shaped surface (84) close to the outer circle of the circular ring (82) is lower than the height of the wedge-shaped surface (84) close to the inner circle of the circular ring (82); the bottom of the conductive sleeve (72) is fixedly connected to the circular ring (82); The push rod (83) is connected to the fixed shaft (53) via a spring (85); The lower surface of the conductive roller (6) is rollingly connected with a brush (61); the conductive roller (6) is rotationally connected to a fixed rod (54); the brush (61) is fixedly connected to the fixed rod (54); the conductive sleeve (72) is electrically connected to the brush (61); The system also comprises a system module (9), wherein the system module (9) comprises a red light warning module (91), a yellow light warning module (92) and a green light warning module (93), wherein the red light warning module (91), the yellow light warning module (92) and the green light warning module (93) are all connected to a remote terminal (95) via a GPS (94), and the red light warning module (91), the yellow light warning module (92) and the green light warning module (93) collect the brightness level of the warning mechanism (4).

2. A surface runoff monitoring and early warning device according to claim 1, characterized in that: The inner wall of the housing (2) is provided with a sliding groove (21), and the floating mechanism (3) is slidably connected to the sliding groove (21).

3. A surface runoff monitoring and early warning device according to claim 1, characterized in that: A fixing rod (54) is fixed on the top of the conductive variable resistance rod (71); a mounting frame (55) is fixedly connected to the fixing rod (54); and the hydroelectric generator (52) is fixed on the mounting frame (55).

4. A surface runoff monitoring and early warning device according to claim 1, characterized in that: The bottom of the shell (2) is fixed in a surface river channel (1) via a bracket (22); the floating mechanism (3) is a floating plate (31) provided with a cavity (32).

5. The early warning method of the surface runoff monitoring and early warning device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The housing (2) is fixed in the surface river channel (1) through the bracket (22). When the runoff in the surface river channel (1) is normal, the water flow velocity in the surface river channel (1) is normal, which drives the impeller (51) to rotate at a low speed. The impeller (51) drives the hydroelectric generator (52) to work through the fixed shaft (53), converting mechanical energy into electrical energy. The hydroelectric generator (52) sequentially energizes the conductive variable resistance rod (71), the conductive sleeve (72), the brush (61), the conductive roller (6), the first electrode (411) and the warning green light (412). Finally, the current flows into the negative pole of the hydroelectric generator (52) to form a closed circuit. The warning green light (412) is energized and lights up green. The green light warning module (93) transmits the green light signal to the remote terminal (95) through the GPS (94). Step 2: When the runoff of the surface river channel (1) gradually increases and the water level rises, the water flow velocity in the surface river channel (1) increases, pushing the impeller (51) to increase its rotation speed. Under the action of centrifugal force, the push rod (83) slides in the horizontal direction to stretch the spring (85), and the push rod (83) pushes the ring (82) and the conductive sleeve (72) to slide upward in turn. After the conductive sleeve (72) slides upward, the conductive resistance length of the conductive variable resistance rod (71) becomes shorter, the resistance becomes smaller, and the brightness of the warning green light (412) increases. The green light warning module (93) collects the brightness level and transmits the green light brightness level to the remote terminal (95) through the GPS (94), and initially warns of the increase in runoff. Step 3: When the runoff increases, the water level of the surface river channel (1) rises. Under the action of buoyancy, the floating plate (31) begins to float up along the chute (21). The power supply mechanism (5), the conductive roller (6), the variable resistance mechanism (7) and the regulating mechanism (8) on the floating plate (31) also move up synchronously. After the conductive roller (6) moves up, it contacts the second electrode (421), so that the warning yellow light (422) is powered on and lights up yellow. The yellow light warning module (92) transmits the yellow light signal to the remote terminal (95) through the GPS (94), warning that the runoff in the surface river channel (1) has reached a moderately dangerous level. Step 4: When the runoff of the surface river channel (1) gradually increases and the water level rises, the water flow velocity in the surface river channel (1) increases, and the increase in flow velocity drives the impeller (51) to increase its rotation speed. Under the action of centrifugal force, the push rod (83) pushes the conductive sleeve (72) upward, and the brightness of the warning yellow light (422) increases. The GPS (94) transmits the brightness of the yellow light to the remote terminal (95); Step 5: When the water level continues to rise and the floating plate (31) continues to float, the conductive roller (6) contacts the third electrode (431), so that the warning red light (432) is powered on and lights up red. The red light warning module (91) collects information and transmits it to the remote terminal (95) via the GPS (94), warning the staff that the runoff in the surface river channel (1) is highly dangerous and that it is necessary to promptly carry out emergency rescue work to clear the runoff in the surface river channel (1).

Images