A flow rate automatic monitoring device

Abstract

The invention belongs to the technical field of flow velocity detection, and discloses an automatic flow velocity monitoring device, comprising an ultrasonic Doppler flowmeter substrate, wherein one end face of the ultrasonic Doppler flowmeter substrate is embedded with a wire, an installation frame is vertically installed inside the ultrasonic Doppler flowmeter substrate, one end face of the installation frame is fixedly installed with a driving motor, an output shaft of the driving motor passes through the installation frame, and a stirring paddle is installed at one end of the installation frame through a flat key; the displacement difficulty of the ultrasonic Doppler flowmeter substrate inside a river channel is changed, so that the position of the ultrasonic Doppler flowmeter substrate can be changed, so that the ultrasonic Doppler flowmeter substrate enters a pre-determined position, and the problem that the ultrasonic Doppler flowmeter substrate is not convenient to be placed in the pre-determined position in the prior art is changed, so that the flow velocities at different positions inside the river channel can be detected, and the detection range is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of flow velocity detection, and in particular relates to an automatic flow velocity monitoring device. Background Art

[0002] Ecological flow monitoring of small flow rates and small flows in small and medium-sized rivers is the focus and difficulty of hydrological monitoring. The existing rivers use ultrasonic Doppler flowmeters in the process of ecological flow monitoring; the ultrasonic Doppler flowmeter system mainly consists of four parts: transducer, signal generator, signal receiver, and signal processor. In terms of signal transmission, a dual-path parallel transducer is designed, the structure and size of the transducer are optimized, the vibration area of ​​the transducer is increased to increase the transmission power, and multiple units of ultrasonic chips are used to change the propagation path of the ultrasonic wave, weaken the energy attenuation of the signal during the propagation process, design the drive circuit, increase the drive voltage, and use a high-efficiency power amplifier to improve the energy conversion efficiency and increase the transmission power. In terms of signal reception, a high-sensitivity analog front-end circuit is designed to collect and amplify the received echo signal, and a suitable filter circuit is designed to filter out noise and interference. The signal processor analyzes the spectrum of the ultrasonic Doppler echo signal through autocorrelation function, wavelet transform, spectrum estimation and other methods to effectively extract the Doppler frequency shift.

[0003] Since the ultrasonic Doppler current meter is placed inside the river channel, it is inconvenient for personnel to take the ultrasonic Doppler current meter, which makes it difficult for the ultrasonic Doppler current meter to move inside the river channel. As a result, the ultrasonic Doppler current meter cannot enter the pre-determined position, thus affecting the purpose of the ultrasonic Doppler current meter to detect different positions inside the river channel. Summary of the invention

[0004] The present invention aims at the problem that in the prior art, an ultrasonic Doppler current meter is placed inside a river channel. At this time, it is inconvenient for personnel to take out the ultrasonic Doppler current meter, which makes it inconvenient for the ultrasonic Doppler current meter to move inside the river channel, thereby causing the ultrasonic Doppler current meter to be unable to enter a pre-determined position, thereby affecting the ultrasonic Doppler current meter's detection of different positions inside the river channel. The present invention proposes the following technical solutions:

[0005] An automatic flow rate monitoring device, comprising an ultrasonic Doppler flow meter substrate, a wire is embedded and installed on one end surface of the ultrasonic Doppler flow meter substrate, a mounting frame is vertically installed inside the ultrasonic Doppler flow meter substrate, a driving motor is fixedly installed on one end surface of the mounting frame, an output shaft of the driving motor passes through the mounting frame and a stirring paddle is installed at one end of the mounting frame through a flat key;

[0006] A rising and falling mechanism is fixedly installed in the middle of the bottom end of the ultrasonic Doppler flowmeter base, and the rising and falling mechanism includes a positioning frame fixedly installed in the middle of the bottom end of the ultrasonic Doppler flowmeter base, a mounting frame is symmetrically fixedly installed inside the positioning frame, a motor is fixedly installed inside the mounting frame, the output shaft of the motor passes through the mounting frame and is located at the bottom end of the mounting frame. A rotating frame is installed at the bottom of the mounting frame through a flat key, and a rotating rod is connected to the rotating frame in a circular array with the center point as a reference, and a rotating blade is fixedly installed at one end of the rotating rod.

[0007] Preferably, a gear is fixedly mounted on one end of the rotating rod away from the rotating blade, a rack is meshingly connected to the outer side of the gear and the rack is slidably connected to the inside of the rotating frame, and a positioning plate is welded between the bottom ends of several of the racks.

[0008] Preferably, a rotating ring is welded to the outside of the positioning plate, the top of the rotating ring is rotatably connected to a lifting ring and the lifting ring is slidably connected to the inside of the positioning frame, a positioning rod is fixedly installed on the top of the lifting ring, an electric telescopic rod is installed on the bottom of the positioning rod and the bottom end of the electric telescopic rod is fixedly installed on the top of the mounting frame.

[0009] Preferably, the positioning rod is composed of two round rods and a horizontal bar, wherein the two round rods penetrate the mounting frame.

[0010] Preferably, a counterweight stabilization mechanism is fixedly installed on the inner wall of the ultrasonic Doppler flowmeter base at positions on both sides of the rising and falling mechanism, and the counterweight stabilization mechanism includes a rectangular frame fixedly installed inside the ultrasonic Doppler flowmeter base, a rectangular plate is slidably connected up and down inside the rectangular frame and the rectangular plate passes through the bottom end of the inner wall of the ultrasonic Doppler flowmeter base, and a piston plate is fixedly installed at the bottom end of the rectangular plate at a position inside the rectangular frame.

[0011] Preferably, an electric lifting rod is fixedly installed at the bottom end of the connecting pair, and the electric lifting rod is fixedly installed inside the ultrasonic Doppler flowmeter base. A fitting groove is opened inside the ultrasonic Doppler flowmeter base at a position corresponding to the outer side of the electric lifting rod.

[0012] Preferably, a frame is fixedly installed on the top of the connecting pair, support columns are fixedly installed at the four corners of the top of the frame, a piston sleeve is fixedly installed on the top of the support column, and a piston rod is fixedly installed inside the piston sleeve.

[0013] Preferably, the piston rod is in an I-shaped shape, a circuit board is installed inside the ultrasonic Doppler flowmeter base, a transducer is installed inside the ultrasonic Doppler flowmeter base on one side of the circuit board, and the top end of the piston rod and the bottom edge of the circuit board fit together.

[0014] Preferably, the diameter of the top end of the piston rod is larger than the diameter of the bottom end, and the diameter of the bottom end of the piston rod is equal to the inner diameter of the piston sleeve.

[0015] The beneficial effects of the present invention are:

[0016] (1) The difficulty of displacement of the ultrasonic Doppler current meter matrix inside the river channel is changed, so that the position of the ultrasonic Doppler current meter matrix can be changed, so that the ultrasonic Doppler current meter matrix can enter a predetermined position, which changes the problem of the prior art that the ultrasonic Doppler current meter matrix is ​​not convenient to be placed in a predetermined position, so that the flow velocity at different positions inside the river channel can be detected, the detection range is increased, and the ability of the instrument to work under different river conditions and different flow rates is improved, so that it can better respond to environmental changes and capture a variety of flow patterns, thereby supporting more comprehensive and in-depth water quality and flow monitoring research;

[0017] (2) By applying a reverse force to the ultrasonic Doppler current meter substrate and increasing gravity, the ultrasonic Doppler current meter substrate is made more stable inside the river channel, preventing the ultrasonic Doppler current meter substrate from being displaced along the river channel, thereby preventing data interruption caused by equipment displacement, ensuring data integrity and continuity, and being able to record fluid flow information more accurately without causing measurement errors due to equipment movement;

[0018] (3) By increasing the pressure, the squeezing force of the piston rod on the circuit board is increased, so that the circuit board is installed more stably and the circuit board is prevented from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 What is shown is a schematic diagram of the structure of an automatic flow rate monitoring device in Example 1;

[0020] Figure 2 Shown is a bottom view of an automatic flow rate monitoring device in Example 1;

[0021] Figure 3 Shown is a cross-sectional view of an automatic flow rate monitoring device in Example 1;

[0022] Figure 4 The structure diagram of the ascending and descending mechanism in Embodiment 1 is shown;

[0023] Figure 5 The figure shows a partial schematic diagram of the ascending and descending mechanism in Embodiment 1;

[0024] Figure 6 Shown is a schematic structural diagram of the counterweight stabilization mechanism in Example 1;

[0025] Figure 7Shown is a cross-sectional view of the counterweight stabilizing mechanism in Embodiment 1.

[0026] In the figure: 1. ultrasonic Doppler flowmeter substrate; 2. wire; 3. mounting frame; 4. stirring paddle; 5. ascending and descending mechanism; 51. positioning frame; 52. mounting frame; 53. motor; 54. rotating frame; 55. rotating rod; 56. rotating blade; 57. gear; 58. rack; 59. positioning plate; 510. rotating ring; 511. lifting ring; 512. positioning rod; 513. electric telescopic rod; 6. counterweight stabilizing mechanism; 61. rectangular frame; 62. rectangular plate; 63. piston plate; 64. connecting pair; 65. electric lifting rod; 66. frame; 67. support column; 68. piston sleeve; 69. piston rod; 7. driving motor. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0028] Embodiment 1: The present invention provides a flow rate automatic monitoring device, such as Figure 1-Figure 7 As shown, it includes an ultrasonic Doppler flowmeter substrate 1, one end surface of the ultrasonic Doppler flowmeter substrate 1 is embedded with a wire 2, and the system inside the ultrasonic Doppler flowmeter substrate 1 includes a transducer, a signal generator, a signal receiver, and a signal processor. The PWM wave emitted by the main control chip is amplified by the power amplifier circuit, so that the transducer emits ultrasonic waves into the fluid. The transducer enhances the received echo signal through the signal receiver, first passes through the preamplifier circuit, and then after bandpass filtering, it enters the mixing circuit with the 1MHz sine wave generated by the digital frequency synthesizer (DDS) for mixing and demodulation processing. The signal after entering the low-pass filter circuit is filtered, and finally the main control chip performs A / D acquisition and spectrum analysis to finally obtain the water flow rate. The data is transmitted through RS485, analyzed by the telemetry terminal, and finally transmitted to the Internet data processing platform through the 4G network. One end of the wire 2 is connected to the telemetry terminal, which includes an RTU module, a battery power module, an Internet of Things card and an antenna. An installation frame 3 is vertically installed inside the ultrasonic Doppler flowmeter substrate 1, and a drive motor 7 is fixedly installed on one end of the installation frame 3. The output shaft of the drive motor 7 passes through the installation frame 3 and is located at one end of the installation frame 3. A stirring paddle 4 is installed through a flat key;

[0029] An ascending and descending mechanism 5 is fixedly installed at the middle of the bottom end of the ultrasonic Doppler flowmeter base 1. The ascending and descending mechanism 5 includes a positioning frame 51 fixedly installed at the middle of the bottom end of the ultrasonic Doppler flowmeter base 1. A mounting frame 52 is symmetrically fixedly installed inside the positioning frame 51. A motor 53 is fixedly installed inside the mounting frame 52. The output shaft of the motor 53 passes through the mounting frame 52 and is located at the bottom end of the mounting frame 52. A rotating frame 54 is installed at the bottom of the mounting frame 52 through a flat key. A rotating rod 55 is connected to the rotating frame 54 in a circular array with the center point as a reference, and a rotating blade 56 is fixedly installed at one end of the rotating rod 55.

[0030] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a gear 57 is fixedly mounted on one end of the rotating rod 55 away from the rotating blade 56, a rack 58 is meshingly connected to the outer side of the gear 57, and the rack 58 is slidably connected to the inside of the rotating frame 54, and a positioning plate 59 is welded between the bottom ends of several racks 58 for synchronous displacement of multiple racks 58, thereby changing the difficulty of synchronous displacement of multiple racks 58.

[0031] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a rotating ring 510 is welded to the outer side of the positioning plate 59, and a lifting ring 511 is rotatably connected to the top of the rotating ring 510, and the lifting ring 511 is slidably connected to the inside of the positioning frame 51, and a positioning rod 512 is fixedly installed on the top of the lifting ring 511, and an electric telescopic rod 513 is installed on the bottom end of the positioning rod 512, and the bottom end of the electric telescopic rod 513 is fixedly installed on the top of the mounting frame 52, and the electric telescopic rod 513 can facilitate the driving of the lifting ring 511 to rise and fall, thereby changing the difficulty of lifting the lifting ring 511.

[0032] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the positioning rod 512 is composed of two round rods and a horizontal bar, wherein the two round rods penetrate the mounting frame 52 and are used to limit the positioning rod 512, thereby changing the difficulty of limiting the positioning rod 512 and preventing the positioning rod 512 from deflecting.

[0033] like Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, a counterweight stabilizing mechanism 6 is fixedly installed on the inner wall of the ultrasonic Doppler current meter base 1 at positions on both sides of the ascending and descending mechanism 5. The counterweight stabilizing mechanism 6 includes a rectangular frame 61 fixedly installed inside the ultrasonic Doppler current meter base 1. A rectangular plate 62 is connected to the inside of the rectangular frame 61 for sliding up and down, and the rectangular plate 62 passes through the bottom end of the inner wall of the ultrasonic Doppler current meter base 1. A piston plate 63 is fixedly installed at the bottom end of the rectangular plate 62 at a position inside the rectangular frame 61 for sucking water stains inside the river channel, thereby increasing the overall weight of the ultrasonic Doppler current meter base 1 and preventing the ultrasonic Doppler current meter base 1 from being displaced due to the impact of water.

[0034] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, an electric lifting rod 65 is fixedly installed at the bottom end of the connecting pair 64, and the electric lifting rod 65 is fixedly installed inside the ultrasonic Doppler flowmeter base 1. A fitting groove is opened inside the ultrasonic Doppler flowmeter base 1 at a position corresponding to the outer side of the electric lifting rod 65 for placing the electric lifting rod 65, thereby changing the difficulty of resetting the electric lifting rod 65 and reducing the area occupied by the electric lifting rod 65.

[0035] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, a frame 66 is fixedly installed on the top of the connecting pair 64, and support columns 67 are fixedly installed at the four corners of the top of the frame 66. A piston sleeve 68 is fixedly installed on the top of the support column 67, and a piston rod 69 is fixedly installed inside the piston sleeve 68 for driving the piston rod 69 to move, thereby changing the difficulty of displacing the piston rod 69 and facilitating the resetting of the piston rod 69, thereby changing the difficulty of resetting the piston rod 69.

[0036] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the shape of the piston rod 69 is an I-type, a circuit board is installed inside the ultrasonic Doppler flowmeter base 1, and a transducer is installed inside the ultrasonic Doppler flowmeter base 1 on one side of the circuit board. The top end of the piston rod 69 and the bottom edge of the circuit board fit together and can be used to support the circuit board, thereby increasing the supporting force of the bottom end of the circuit board and making the circuit board installation more stable.

[0037] like Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the top diameter of the piston rod 69 is larger than the bottom diameter, and the bottom diameter of the piston rod 69 is equal to the inner diameter of the piston sleeve 68, which is used to increase the force range between the piston rod 69 and the circuit board, thereby reducing the phenomenon of the extruded plate being broken when the piston rod 69 squeezes the circuit board.

[0038] Working principle: When the device is used, a person puts the ultrasonic Doppler current meter substrate 1 into the river channel, and then starts the motor 53. When the motor 53 is running, it drives the rotating frame 54 to rotate. When the rotating frame 54 rotates, it drives the rotating blade 56 to rotate through the rotating rod 55. When the rotating blade 56 rotates, the ultrasonic Doppler current meter substrate 1 floats inside the river channel, and at this time, the driving motor 7 is running, and the driving motor 7 drives the stirring paddle 4 to rotate when it is running. When the stirring paddle 4 rotates, it drives the ultrasonic Doppler current meter substrate 1 to move inside the river channel, which changes the displacement difficulty of the ultrasonic Doppler current meter substrate 1 inside the river channel, so that the position of the ultrasonic Doppler current meter substrate 1 can be changed, so that the ultrasonic Doppler current meter substrate 1 enters a pre-determined position, which changes the problem in the prior art that the ultrasonic Doppler current meter substrate 1 is not convenient to be placed in a pre-determined position, so that the flow velocity at different positions inside the river channel can be detected, and the detection range is increased;

[0039] Then, when the ultrasonic Doppler current meter base 1 enters the pre-determined position, the electric telescopic rod 513 is started. When the electric telescopic rod 513 is in operation, it drives the lifting ring 511 to rise and fall. When the lifting ring 511 rises and falls, it drives the rotating ring 510 to rise and fall. When the rotating ring 510 rises and falls, it drives the positioning plate 59 to rise and fall. When the positioning plate 59 rises and falls, it drives the rack 58 to rise and fall. When the rack 58 rises and falls, it drives the gear 57 to rotate. When the gear 57 rotates, it drives the rotating blade 56 to rotate through the rotating rod 55, thereby changing the lift of the rotating blade 56 when it rotates, so that the ultrasonic Doppler current meter base 1 slowly moves to the bottom of the river channel. After continuing to move, the rotating blade 56 is converted from a downward tilt in the rotation direction to an upward tilt in the rotation direction, thereby applying a reverse force to the ultrasonic Doppler current meter base 1, so that the ultrasonic Doppler current meter base 1 is more stable inside the river channel, and the ultrasonic Doppler current meter base 1 is prevented from being displaced along the river channel.

[0040] In this process, the electric lifting rod 65 is started. When the electric lifting rod 65 is running, it drives the connecting pair 64 to move. When the connecting pair 64 moves, it drives the piston plate 63 to move. When the piston plate 63 moves, it absorbs the water inside the river channel and allows the water to enter the rectangular frame 61, thereby increasing the overall gravity of the ultrasonic Doppler current meter substrate 1. By increasing the gravity, the ultrasonic Doppler current meter substrate 1 is more stable inside the river channel, preventing the ultrasonic Doppler current meter substrate 1 from being displaced along the river channel.

[0041] In this process, when the connection pair 64 rises, the frame 66 is driven to rise, and when the frame 66 rises, the support column 67 is driven to rise. At this time, due to the fit between the piston rod 69 and the circuit board, the piston sleeve 68 moves along the outer side of the piston rod 69 due to the squeezing force of the circuit board on the piston rod 69, and the pressure inside the piston sleeve 68 is changed. By increasing the pressure, the squeezing force of the piston rod 69 on the circuit board is increased, so that the circuit board is installed more stably and the circuit board is prevented from being loosened.

[0042] Finally, the PWM wave emitted by the main control chip is amplified by the power amplifier circuit, so that the transducer emits ultrasonic waves into the fluid. The transducer enhances the received echo signal through the signal receiver. It first passes through the preamplifier circuit and bandpass filtering, and then enters the mixing circuit for mixing and demodulation with the 1MHz sine wave generated by the digital frequency synthesizer (DDS). The processed signal enters the low-pass filter circuit for filtering, and finally the main control chip performs A / D acquisition and spectrum analysis to finally obtain the water flow rate. The data is transmitted through RS485, analyzed by the telemetry terminal, and finally transmitted to the Internet data processing platform through the 4G network.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A flow rate automatic monitoring device, characterized in that: The invention comprises an ultrasonic Doppler flow meter substrate (1), wherein a wire (2) is embedded and installed at one end surface of the ultrasonic Doppler flow meter substrate (1), a mounting frame (3) is vertically installed inside the ultrasonic Doppler flow meter substrate (1), a driving motor (7) is fixedly installed at one end surface of the mounting frame (3), an output shaft of the driving motor (7) passes through the mounting frame (3) and a stirring paddle (4) is installed at one end of the mounting frame (3) via a flat key; an ascending and descending mechanism (5) is fixedly installed at the middle of the bottom end of the ultrasonic Doppler flow meter substrate (1), and the ascending and descending mechanism (5) comprises The invention comprises a positioning frame (51) fixedly mounted on the middle part of the bottom end of the ultrasonic Doppler flow meter base (1), a mounting frame (52) being symmetrically fixedly mounted inside the positioning frame (51), a motor (53) being fixedly mounted inside the mounting frame (52), an output shaft of the motor (53) passing through the mounting frame (52) and being located at the bottom end of the mounting frame (52) and being mounted with a rotating frame (54) by means of a flat key, a rotating rod (55) being connected to the rotating frame (54) in a circular array rotatably with a center point as a reference, and a rotating blade (56) being fixedly mounted on one end of the rotating rod (55); A gear (57) is fixedly mounted on one end of the rotating rod (55) away from the rotating blade (56); a rack (58) is meshingly connected to the outer side of the gear (57); and the rack (58) is slidably connected to the inside of the rotating frame (54); and a positioning plate (59) is welded between the bottom ends of a plurality of the racks (58); A rotating ring (510) is welded to the outer side of the positioning plate (59); a lifting ring (511) is rotatably connected to the top of the rotating ring (510), and the lifting ring (511) is slidably connected to the inside of the positioning frame (51); a positioning rod (512) is fixedly installed on the top of the lifting ring (511); an electric telescopic rod (513) is installed on the bottom of the positioning rod (512), and the bottom of the electric telescopic rod (513) is fixedly installed on the top of the mounting frame (52); The positioning rod (512) is composed of two round rods and a horizontal bar, wherein the two round rods penetrate the mounting frame (52).

2. The automatic flow rate monitoring device according to claim 1, characterized in that: A counterweight stabilization mechanism (6) is fixedly installed on the inner wall of the ultrasonic Doppler flowmeter base (1) at positions on both sides of the ascending and descending mechanism (5), and the counterweight stabilization mechanism (6) comprises a rectangular frame (61) fixedly installed inside the ultrasonic Doppler flowmeter base (1), a rectangular plate (62) is slidably connected up and down inside the rectangular frame (61), and the rectangular plate (62) passes through the bottom end of the inner wall of the ultrasonic Doppler flowmeter base (1), and a piston plate (63) is fixedly installed at the bottom end of the rectangular plate (62) at a position inside the rectangular frame (61).

3. The automatic flow rate monitoring device according to claim 2, characterized in that: An electric lifting rod (65) is fixedly mounted on the bottom end of the connection pair (64), and the electric lifting rod (65) is fixedly mounted inside the ultrasonic Doppler flow meter base (1). A fitting groove is provided inside the ultrasonic Doppler flow meter base (1) at a position corresponding to the outer side of the electric lifting rod (65).

4. The automatic flow rate monitoring device according to claim 2, characterized in that: A frame (66) is fixedly mounted on the top of the connection pair (64), support columns (67) are fixedly mounted at the four corners of the top of the frame (66), a piston sleeve (68) is fixedly mounted on the top of the support column (67), and a piston rod (69) is fixedly mounted inside the piston sleeve (68).

5. The automatic flow rate monitoring device according to claim 4, characterized in that: The piston rod (69) is in the shape of an I-shaped body, a circuit board is installed inside the ultrasonic Doppler flow meter base (1), a transducer is installed inside the ultrasonic Doppler flow meter base (1) on one side of the circuit board, and the top end of the piston rod (69) and the bottom edge of the circuit board are in contact with each other.

6. The automatic flow rate monitoring device according to claim 5, characterized in that: The diameter of the top end of the piston rod (69) is greater than the diameter of the bottom end, and the diameter of the bottom end of the piston rod (69) is equal to the inner diameter of the piston sleeve (68).

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